Electronic anti-theft device for mobile phone display

Abstract

The application provides a kind of electronic anti-theft device for mobile phone display, including alarm host, connecting assembly and anti-theft dog component, connecting assembly is rotatably installed at the top of alarm host, and anti-theft dog component is tightly installed at the top of connecting assembly;Alarm host includes outer cylinder, and the inner top of outer cylinder is installed with connecting disc, the center of connecting disc is provided with connecting cavity, and circuit board one is fixedly installed on the outside close to connecting cavity, and the top of circuit board one is installed with multiple contact pins.The application adopts magnetic attraction type rotary connection structure, so that connecting assembly and alarm host can be quickly aligned, installed and separated without bonding, which significantly improves the efficiency of mobile phone replacement and the convenience of connecting assembly reuse, and avoids the problem of residual glue cleaning;With the rotary installation design of connecting assembly, the user can freely rotate the fixed mobile phone, realize flexible display at multiple angles, and greatly enhance the product display adaptability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic product anti-theft devices, more specifically, relates to a kind of electronic anti-theft device for mobile phone display. BACKGROUND

[0002] The electronic anti-theft device for mobile phone display is a key security device applied in retail environment. It is usually composed of a fixed base, a connecting seat and an anti-theft cable. It fixes the display mobile phone on the exhibition stand or counter through physical means and has an internal sensing and alarm system. When unauthorized movement or disassembly occurs, the device can immediately trigger an audible and visual alarm or a remote alarm, effectively preventing the display mobile phone from being stolen.

[0003] However, the existing such devices have obvious defects: first, the connecting seat is generally attached to the back of the mobile phone by fixed bonding, which makes the disassembly process time-consuming and laborious when the mobile phone needs to be replaced or removed, and it is difficult to achieve quick cleaning and efficient reuse of the connecting seat or mobile phone; second, the connecting structure between the fixed base and the connecting seat is usually fixed in style, lacking necessary adjustment function, which seriously limits the display angle of the mobile phone on the exhibition stand, making the product display flexibility and adaptability insufficient and the user experience poor. SUMMARY

[0004] To solve the above technical problems, the present application provides an electronic anti-theft device for mobile phone display, which is achieved by the following specific technical means:

[0005] An electronic anti-theft device for mobile phone display, comprising an alarm host, a connecting assembly and an anti-theft claw assembly, the connecting assembly is rotatably installed at the top end of the alarm host, and the anti-theft claw assembly is tightly installed at the top end of the connecting assembly; the alarm host comprises an outer cylinder, a connecting disc is installed at the inner top end of the outer cylinder, a connecting cavity is provided at the center of the connecting disc, and an electric circuit board one is fixedly installed at the outer side near the connecting cavity, a plurality of contact pins are installed at the top end of the electric circuit board one, and the top ends of the plurality of contact pins are penetrated from the top surface of the connecting disc; a wire winder is installed inside the outer cylinder; the connecting assembly comprises a connecting seat, a step adapted to connect with the inner top end of the outer cylinder is provided at the bottom end of the connecting seat, an electric circuit board three is fixedly installed inside the connecting seat, a plurality of spring pins are installed at the bottom end of the electric circuit board three, the bottom ends of the plurality of spring pins are penetrated from the bottom surface of the connecting seat, and can be in corresponding contact connection with the top ends of the plurality of contact pins; an anti-theft wire is rotatably connected at the center of the bottom end of the connecting seat, and the other end of the anti-theft wire is fixedly connected with the winding drum of the wire winder; a detection mechanism for detecting the state of the anti-theft claw assembly is installed inside the connecting assembly; the anti-theft claw assembly comprises a claw seat, two groups of slide grooves are provided at the top end of the claw seat in horizontal and vertical directions, and four groups of claws are slidably installed in the four groups of slide grooves for clamping the mobile phone.

[0006] Further, the top end of the connecting disc is provided with multiple groups of flanges at equal angles, and transition curved surfaces are arranged between the two ends of the flanges and the top surface of the connecting disc; the top end of the connecting seat is provided with connecting grooves matched with the flanges; when the connecting grooves are completely connected with the flanges, the bottom end of the spring contact pin is connected with the top end of the contact pin.

[0007] Further, the bottom end of the connecting disc is fixedly installed with lower magnets between two groups of adjacent flanges; the inside of the connecting seat is fixedly installed with multiple groups of upper magnets corresponding to the lower magnets, and the upper magnets can be correspondingly adsorbed with the lower magnets.

[0008] Further, the bottom end of the connecting seat is provided with a connecting ring, the top end of the anti-theft wire is provided with a connecting head, the top end of the connecting head is rotatably clamped with a fixed cylinder body, the top end of the fixed cylinder body penetrates into the inside of the connecting seat from the bottom end of the connecting ring; the detection mechanism comprises a mounting plate installed in the inside of the connecting seat and a pressure switch, the bottom end of the mounting plate is provided with multiple groups of optical shafts, the inside of the connecting seat is provided with multiple groups of mounting holes in sliding connection with the optical shafts; the pressure switch is fixed to the top end of the fixed cylinder body and is in contact connection with the bottom end of the mounting plate, and the pressure switch is in electrical connection with the circuit board through wires; the top end of the mounting plate is vertically provided with a detection column on one side; the top end of the connecting seat is fixedly connected with a top cover, and the top cover is provided with a through hole corresponding to the detection column for the detection column to penetrate out.

[0009] Further, the outside of the fixed cylinder body is clamped with a limiting ring at the bottom end of the connecting ring, the outside of the connecting head is sleeved with a locking ring, the top end of the locking ring is provided with a connecting hole connected with the outside of the connecting ring, and the bottom end of the connecting hole is arranged in abutment with the limiting ring; the outside of the connecting ring is provided with multiple groups of L-shaped clamping grooves at equal angles; the top end of the connecting hole is provided with multiple groups of clamping blocks capable of clamping connection with the L-shaped clamping grooves; the outside of the locking ring is provided with an annular groove; one side of the connecting cavity is provided with a threaded hole and is installed with a limiting screw column one through the threaded hole; when the connecting assembly is installed to the top end of the alarm host, one end of the limiting screw column one can penetrate into the annular groove to limit the connecting assembly.

[0010] Further, a locking plate is installed in the inside of the connecting seat at the bottom end of the mounting plate, the bottom end of the locking plate is provided with a guide shaft at the center, the inside of the connecting seat is provided with a through hole in sliding connection with the guide shaft; the bottom end of the locking plate is provided with a locking shaft, the bottom end of the locking shaft penetrates out of the connecting seat, the top end of the locking ring is provided with a limiting hole, when the clamping blocks of the locking ring are completely clamped into the L-shaped clamping grooves, the locking shaft is inserted into the limiting hole in correspondence; the locking plate and the mounting plate are connected with a spring; the bottom side of the top cover is provided with a threaded hole corresponding to the position of the locking plate, and is connected with a limiting screw column two through the threaded hole, and the end of the limiting screw column two is arranged in abutment with the locking plate.

[0011] Further, one side of the circuit board three is provided with an interface, the interface is connected with a charging line; the bottom end of the connecting seat is provided with two groups of counterbores, the bottom end of the claw seat is provided with screw holes corresponding to the counterbores, fastening screws are installed in the counterbores, and one end of the fastening screws is connected with the screw holes of the claw seat.

[0012] Further, the inner cylinder is fixedly installed in the inner part of the outer cylinder, the bottom end of the connecting seat is provided with a plurality of connecting columns, the connecting columns are fixedly connected with the top end of the inner cylinder through fastening screws, the bottom end of the outer cylinder is connected with a base, the base is fixedly connected with the bottom end of the inner cylinder through fastening screws, the top end of the base is connected with a mounting seat, the mounting seat is fixedly installed with an alarm on one side, the inner part of the mounting seat is installed with a circuit board two, the bottom side of the circuit board two is installed with a power switch and a micro switch, the base is provided with through grooves corresponding to the power switch and the micro switch, respectively, the circuit board two is connected with a power line on one side, and the circuit board two is electrically connected with the alarm and the circuit board one through wires.

[0013] Further, the claw includes right claw one, left claw, lower claw, upper claw one, right claw two and upper claw two, a gear is rotatably installed in the center of the claw seat, a rack is arranged on one side of the right claw one, the left claw and the lower claw, and the rack is engaged with the gear, a plurality of lock holes are equidistantly arranged on the bottom side of the upper claw one and the right claw two, two threaded holes are arranged on the bottom side of the claw seat, machine screws are spirally connected in the threaded holes, the top end of the machine screw can be inserted into the lock hole, so that the upper claw one and the right claw two are locked, and the top end of the claw seat is fixedly connected with a cover plate.

[0014] Further, when the mobile phone to be clamped is a straight plate style, the right claw one, the left claw, the lower claw and the upper claw one are slidably installed in the sliding groove of the claw seat, one end of the right claw one, the left claw, the lower claw and the upper claw one is a 180° bent claw head, and the 180° bent claw head is used for clamping the top side edge of the straight plate style mobile phone.

[0015] When the mobile phone to be clamped is a left-right folding style, the right claw two, the left claw, the lower claw and the upper claw one are slidably installed in the sliding groove of the claw seat, one end of the left claw, the lower claw and the upper claw one is a 180° bent claw head, one end of the right claw two is a limiting claw, the limiting claw is composed of a vertical section and an inclined section, the vertical section is used for limiting the hinge position of the folding screen mobile phone, and the inclined section is used for supporting the screen turned over.

[0016] When the mobile phone to be clamped is in an up-down folding style, the right claw, the left claw, the lower claw and the upper claw two are slidably installed in the sliding slot of the claw seat, one end of the right claw, the left claw and the lower claw is a 180° bent claw head, and one end of the upper claw two is in a folding and inclined style, and is used for limiting the hinge position of the folding screen mobile phone.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The magnetic attraction type rotary connection structure is adopted, so that the connection assembly and the alarm host can be quickly aligned, installed and separated without adhesion, the efficiency of replacing the mobile phone and the convenience of reusing the connection assembly are significantly improved, the residual glue cleaning problem is avoided, the rotary installation design of the connection assembly is matched, the user can freely rotate the fixed mobile phone, multi-angle flexible display is realized, and the product display adaptability is greatly enhanced.

[0019] 2. The state of the anti-theft wire and the anti-theft claw assembly is monitored in real time by the detection mechanism, and the alarm is triggered immediately in case of abnormal looseness, so as to improve the overall anti-theft performance, and the gear and rack linkage structure of the claw assembly and the plug-in fixing of the machine screw and the lock hole further ensure that the mobile phone is firmly clamped and prevented from being pried off.

[0020] 3. The present application has excellent applicability and operation convenience: the modular claw system provides multiple claw special components, which can adapt to the diversified forms of straight mobile phones, left-right folding mobile phones and up-down folding mobile phones through sliding groove combination; the claw seat is quickly disassembled through the counterbore screw, the alarm host adopts the modular assembly structure of the inner cylinder and the base for easy maintenance; the independent charging interface of the connecting seat supports the power supply of the mobile phone in the display, effectively improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure of the present application Figure 1 .

[0022] Figure 2 is the overall structure of the present application Figure 2 .

[0023] Figure 3 is the split schematic view of the alarm host, the connection assembly and the anti-theft claw assembly of the present application.

[0024] Figure 4 is the schematic view of the alarm host of the present application Figure 1 .

[0025] Figure 5 is the alarm host structure disassembly schematic view of the present application.

[0026] Figure 6 is the connection disc structure schematic view of the present application.

[0027] Figure 7 is the disassembled schematic diagram of the base structure of the present application.

[0028] Figure 8 is the schematic diagram of the alarm host of the present application Figure 2 .

[0029] Figure 9 is the schematic diagram of the connecting assembly structure of the present application.

[0030] Figure 10 is the disassembled schematic diagram of the connecting assembly structure of the present application.

[0031] Figure 11 is the schematic diagram of the internal structure of the connecting seat of the present application.

[0032] Figure 12 is the schematic diagram of the bottom structure of the connecting seat of the present application.

[0033] Figure 13 is the schematic diagram of the cross-sectional structure of the connecting assembly of the present application.

[0034] Figure 14 is the disassembled schematic diagram of the connecting assembly structure of the present application.

[0035] Figure 15 is the schematic diagram of the locking ring structure of the present application.

[0036] Figure 16 is the disassembled schematic diagram of the anti-theft claw assembly structure of the present application Figure 1 .

[0037] Figure 17 is the disassembled schematic diagram of the anti-theft claw assembly structure of the present application Figure 2 .

[0038] Figure 18 is the schematic diagram of the claw movement of the present application.

[0039] Figure 19 is the schematic diagram of the anti-theft claw assembly structure for holding the straight plate style mobile phone of the present application.

[0040] Figure 20 is the schematic diagram of holding the straight plate style mobile phone of the present application.

[0041] Figure 21 is the schematic diagram of the anti-theft claw assembly structure for holding the left and right folding style mobile phone of the present application.

[0042] Figure 22 is the schematic diagram of holding the left and right folding style mobile phone of the present application.

[0043] Figure 23 is the schematic diagram of the anti-theft claw assembly structure for holding the up and down folding style mobile phone of the present application.

[0044] Figure 24 is the schematic diagram of the upper and lower folding style mobile phone holder of the present application.

[0045] In the figure, the correspondence between the component names and the figure numbers is as follows:

[0046] 1, alarm host; 11, outer cylinder; 12, connecting disc; 1201, flange; 1202, connecting column; 1203, connecting cavity; 13, circuit board one; 1301, contact pin; 14, limiting stud one; 15, inner cylinder; 16, base; 17, wire winder; 18, mounting seat; 19, alarm; 110, circuit board two; 111, power line; 112, power switch; 113, micro switch; 114, lower magnet;

[0047] 2, connecting assembly; 21, connecting seat; 2101, connecting groove; 2102, connecting ring; 22, circuit board three; 2201, spring thimble; 23, mounting plate; 2301, detection column; 24, top cover; 25, anti-theft line; 2501, connecting head; 2502, fixed cylinder; 26, charging line; 27, locking ring; 2701, annular groove; 2702, clamping block; 2703, limiting hole; 28, pressure switch; 29, limiting ring; 210, spring; 211, limiting stud two; 212, locking plate; 213, upper magnet;

[0048] 3, anti-theft claw assembly; 31, claw seat; 32, right claw one; 33, left claw; 34, lower claw; 35, upper claw one; 36, cover plate; 37, gear; 38, machine screw; 321, right claw two; 351, upper claw two. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0050] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] Embodiment:

[0053] As shown in the accompanying Figure 1 to the accompanying Figure 24 As shown:

[0054] The present application provides a kind of electronic anti-theft device for mobile phone display, including alarm host 1, connecting component 2 and anti-theft dog component 3, the connecting component 2 is rotatably installed at the top of alarm host 1, the anti-theft dog component 3 is fastenedly installed at the top of connecting component 2;The alarm host 1 includes outer cylinder 11, the inner top of the outer cylinder 11 is installed with connecting disc 12, the center of the connecting disc 12 is provided with connecting cavity 1203, and circuit board one 13 is fixedly installed on the outer side close to connecting cavity 1203, the top of the circuit board one 13 is installed with multiple contact pins 1301, and the top of multiple contact pins 1301 is all from the top surface of connecting disc 12 and is worn;The inside of the outer cylinder 11 is installed with winding device 17, winding device 17 uses the winding assembly of torsional spring in prior art and is internally provided, the torsional spring makes winding drum have the tendency of reverse rotation and tightens anti-theft wire 25, to tighten and tighten anti-theft wire 25 in real time;The connecting component 2 includes connecting seat 21, the bottom of the connecting seat 21 is provided with the step of being connected with the inner top of outer cylinder 11, the inside of the connecting seat 21 is fixedly installed with circuit board three 22, the bottom of the circuit board three 22 is installed with multiple spring pins 2201, and the bottom of multiple spring pins 2201 is from the bottom surface of connecting seat 21 and is worn, and can be contacted and connected with the top of multiple contact pins 1301 correspondingly;The center of the bottom of the connecting seat 21 is rotatably connected with anti-theft wire 25, and the other end of the anti-theft wire 25 is fixedly connected with winding drum of winding device 17;The inside of the connecting component 2 is installed with detection mechanism for detecting the state of anti-theft dog component 3;The anti-theft dog component 3 includes dog seat 31, the top of the dog seat 31 is provided with two groups of slide grooves in horizontal and vertical directions, and four groups of slide grooves are all slidably installed with dog, for clamping mobile phone.

[0055] Wherein, the top end of the connecting disc 12 is equiangularly provided with multiple groups of flanges 1201, both ends of the flanges 1201 and the top surface of the connecting disc 12 are provided with transition arc surfaces; the top end of the connecting seat 21 is provided with a connecting groove 2101 corresponding to the flanges 1201; the equiangular distribution of the flanges 1201 and the design of the transition arc surfaces make the connecting groove 2101 smoothly slide along it, realizing the rotational adjustment of the connecting assembly 2 relative to the alarm host 1. When the connecting groove 2101 is completely connected with the flanges 1201, the bottom end of the spring contact pin 2201 is connected with the top end of the contact pin 1301, to ensure the accurate contact of the spring contact pin 2201 and the contact pin 1301, completing the circuit conduction; at the same time, when the connecting assembly 2 rotates, due to the action of the flanges 1201 and the connecting groove 2101, the spring contact pin 2201 and the contact pin 1301 can be quickly separated, to reduce the wear between them and improve the service life.

[0056] Wherein, the bottom end of the connecting disc 12 is fixedly installed with a lower magnet 114 between two groups of adjacent flanges 1201; the inside of the connecting seat 21 is fixedly installed with multiple groups of upper magnets 213 corresponding to the lower magnets 114, the upper magnets 213 can be correspondingly adsorbed with the lower magnets 114, to facilitate the quick adsorption of the connecting assembly 2 when the connecting groove 2101 is completely connected with the flanges 1201, to ensure the stable connection of the spring contact pin 2201 and the contact pin 1301.

[0057] The bottom end center of the connecting seat 21 is provided with a connecting ring 2102, the top end of the anti-theft wire 25 is provided with a connecting head 2501, the top end of the connecting head 2501 is rotationally clamped with a fixed cylinder body 2502, the top end of the fixed cylinder body 2502 penetrates into the inside of the connecting seat 21 from the bottom end of the connecting ring 2102; the detection mechanism comprises a mounting plate 23 and a pressure switch 28 mounted in the inside of the connecting seat 21, the bottom end of the mounting plate 23 is provided with a plurality of groups of optical axes, the inside of the connecting seat 21 is provided with a plurality of groups of mounting holes in sliding connection with the optical axes, so as to ensure that the mounting plate 23 can accurately move along the set direction; the pressure switch 28 is fixed to the top end of the fixed cylinder body 2502 and is in contact connection with the bottom end of the mounting plate 23, the pressure switch 28 is electrically connected with the circuit board three 22 through a wire, and the position change of the fixed cylinder body 2502 can be detected through the contact connection between the pressure switch 28 and the mounting plate 23, when the anti-theft wire 25 is forcibly pulled by external force, the connecting head 2501 drives the fixed cylinder body 2502 to move downward, so that the position of the fixed cylinder body 2502 is abnormal, and the alarm can be triggered quickly; the top end of the mounting plate 23 is vertically provided with a detection column 2301 on one side; the top end of the connecting seat 21 is fixedly connected with a top cover 24, the top cover 24 is provided with a through hole corresponding to the detection column 2301, when the anti-theft claw assembly 3 is locked and installed on the top side of the top cover 24, the detection column 2301 can be pressed downward to drive the mounting plate 23 to press the pressure switch 28, when the anti-theft claw assembly 3 is separated from the top cover 24, the detection column 2301 and the mounting plate 23 will lose pressure to trigger the alarm.

[0058] The outer side of the fixed cylinder 2502 is sleeved with a limiting ring 29 at the bottom end of the connecting ring 2102, the outer side of the connecting head 2501 is sleeved with a locking ring 27, the top end of the locking ring 27 is provided with a connecting hole connected with the outer side of the connecting ring 2102, and the bottom end of the connecting hole is provided in abutment with the limiting ring 29, so that the connecting head 2501 is stably positioned and the anti-removal effect of the anti-theft wire 25 is improved; a plurality of groups of L-shaped clamping grooves are provided at equal angles on the outer side of the connecting ring 2102; a plurality of groups of clamping blocks 2702 capable of being clamped and connected with the L-shaped clamping grooves are provided at the top end of the connecting hole, in the installation, the connecting hole of the locking ring 27 is aligned with the connecting ring 2102, and the clamping block 2702 is inserted into the corresponding L-shaped clamping groove, after being inserted, a certain angle is rotated, the locking ring 27 and the connecting ring 2102 are clamped and connected, the limiting ring 29 is positioned and fixed; the outer side of the locking ring 27 is provided with an annular groove 2701; one side of the connecting cavity 1203 is provided with a threaded hole, and a limiting stud one 14 is installed through the threaded hole; when the connecting assembly 2 is installed to the top end of the alarm host 1, one end of the limiting stud one 14 can extend into the annular groove 2701 to limit the connecting assembly 2, so as to prevent the connecting assembly 2 from separating from the alarm host 1 after being connected. The groove width of the annular groove 2701 is greater than the diameter of the insertion end of the limiting stud one 14, so that movement interference does not occur when the connecting assembly 2 is rotated and adjusted.

[0059] The inner side of the connecting seat 21 is provided with a locking plate 212 at the bottom end of the mounting plate 23, the bottom end center of the locking plate 212 is provided with a guide shaft, the inner side of the connecting seat 21 is provided with a through hole in sliding connection with the guide shaft, so that the locking plate 212 can move accurately in a set direction; the bottom end of the locking shaft protrudes out of the connecting seat 21, the top end of the locking ring 27 is provided with a limiting hole 2703, when the clamping block 2702 of the locking ring 27 is completely clamped into the L-shaped clamping groove, the locking shaft is inserted into the limiting hole 2703 correspondingly, after the locking ring 27 is rotated and locked in place, it is secondarily mechanically locked and positioned, preventing it from being reversed, so as to increase the difficulty of illegal disassembly and improve the anti-theft level; the locking plate 212 and the mounting plate 23 are connected with a spring 210, so as to provide continuous and stable elastic force to the mounting plate 23, when the anti-theft clamping jaw assembly 3 is separated from the connecting assembly 2, the mounting plate 23 is quickly popped up upward, so as to be separated from the pressure switch 28, and then the alarm is quickly triggered; the bottom side of the top cover 24 is provided with a threaded hole at the position corresponding to the locking plate 212, and the threaded hole is connected with a limiting stud two 211, the end of the limiting stud two 211 is provided in abutment with the locking plate 212, so as to quickly position the locking plate 212, ensure that the locking shaft can be stably inserted into the limiting hole 2703, and improve the anti-theft level.

[0060] One side of the circuit board three 22 is provided with an interface, the interface is connected with a charging line 26, the charging line 26 charges the mobile phone, improves the functionality when the mobile phone is displayed and used; the bottom end of the connecting seat 21 is provided with two groups of counterbores, the bottom end of the claw seat 31 is provided with screw holes corresponding to the counterbores, fastening screws are installed in the counterbores, one end of the fastening screws is connected with the screw holes of the claw seat 31 in correspondence, so as to facilitate quick disassembly and replacement of the claw seat 31, realize efficient switching and adaptation of the display prototype.

[0061] The inner cylinder 15 is fixedly installed in the inner part of the outer cylinder 11, a plurality of connecting columns 1202 are arranged at the bottom end of the connecting seat 21, the connecting columns 1202 are fixedly connected with the top end of the inner cylinder 15 through fastening screws; the bottom end of the outer cylinder 11 is connected with the base 16, the base 16 is fixedly connected with the bottom end of the inner cylinder 15 through fastening screws; the top end of the base 16 is connected with the mounting seat 18, the mounting seat 18 is fixedly installed with the alarm 19 on one side; the inner part of the mounting seat 18 is installed with the second circuit board 110, the bottom side of the second circuit board 110 is installed with the power switch 112 and the micro switch 113, the base 16 is provided with through grooves corresponding to the power switch 112 and the micro switch 113 for exposing them, the micro switch 113 is arranged, so as to realize real-time detection of the position state of the alarm host 1 after the alarm host 1 is fixedly installed on the display table top, when the alarm host 1 is loosened due to external force, the alarm can be triggered quickly; the one side of the second circuit board 110 is connected with the power line 111; the second circuit board 110 is electrically connected with the alarm 19 and the first circuit board 13 through wires.

[0062] As shown in Figures 16 to 19 The claw includes the right claw one 32, the left claw 33, the lower claw 34, the upper claw one 35, the right claw two 321 and the upper claw two 351; the gear 37 is rotatably installed at the center of the claw seat 31, the right claw one 32, the left claw 33 and the lower claw 34 are all provided with the rack meshing with the gear 37 on one side; a plurality of groups of lock holes are equidistantly arranged on the bottom side of the upper claw one 35 and the right claw two 321, two groups of threaded holes are arranged on the bottom side of the claw seat 31, the machine screw 38 is spirally connected in the threaded hole, the top end of the machine screw 38 can be inserted into the lock hole, and the upper claw one 35 and the right claw two 321 are locked; the top end of the claw seat 31 is fixedly connected with the cover plate 36.

[0063] As shown in Figure 19 And Figure 20As shown, when the mobile phone to be clamped is a straight style, the sliding groove of the claw seat 31 is slidably installed with the right claw 32, the left claw 33, the lower claw 34 and the upper claw 35, one end of each of the right claw 32, the left claw 33, the lower claw 34 and the upper claw 35 is a 180° bent claw head, which is used to grab the top side edge of the straight style mobile phone, to realize full-frame no dead angle clamping, and the force is uniform. When clamping, first pull the right claw 32, the left claw 33 and the upper claw 35 outward to the maximum, then put the straight mobile phone into the top surface of the claw seat 31, and push the mobile phone to the lower claw 34 to stop, in this process, the right claw 32 and the left claw 33 on both sides will automatically move inward due to the action of the rack and pinion 37, and clamp the two sides of the mobile phone; then move the upper claw 35 to the mobile phone to stop, finally screw the machine screw 38 into the specified threaded hole to lock the upper claw 35, so as to clamp and lock the mobile phone stably. After clamping and locking, the anti-theft claw assembly 3 can be put on the connecting assembly 2, and the fastening connection of the anti-theft claw assembly 3 and the connecting assembly 2 is completed by using screws.

[0064] As shown in Figure 21 and Figure 22 As shown, when the mobile phone to be clamped is a straight style, the sliding groove of the claw seat 31 is slidably installed with the right claw 32, the left claw 33, the lower claw 34 and the upper claw 35, one end of each of the right claw 32, the left claw 33, the lower claw 34 and the upper claw 35 is a 180° bent claw head, which is used to grab the top side edge of the straight style mobile phone, to realize full-frame no dead angle clamping, and the force is uniform. When clamping, first pull the right claw 32, the left claw 33 and the upper claw 35 outward to the maximum, then put the straight mobile phone into the top surface of the claw seat 31, and push the mobile phone to the lower claw 34 to stop, in this process, the right claw 32 and the left claw 33 on both sides will automatically move inward due to the action of the rack and pinion 37, and clamp the two sides of the mobile phone; then move the upper claw 35 to the mobile phone to stop, finally screw the machine screw 38 into the specified threaded hole to lock the upper claw 35, so as to clamp and lock the mobile phone stably. After clamping and locking, the anti-theft claw assembly 3 can be put on the connecting assembly 2, and the fastening connection of the anti-theft claw assembly 3 and the connecting assembly 2 is completed by using screws.

[0065] As shown in Figure 23 and Figure 24As shown, when the mobile phone to be clamped is in an up-down folding style, the right jaw one 32, the left jaw 33, the lower jaw 34 and the upper jaw two 351 are slidingly installed in the sliding groove of the jaw seat 31, one end of the right jaw one 32, the left jaw 33 and the lower jaw 34 is a 180° bent jaw head, and one end of the upper jaw two 351 is in a folding and tilting style, used for limiting the hinge position of the folding screen mobile phone. When clamping, first pull the right jaw one 32, the left jaw 33 and the upper jaw one 35 outward to the maximum, then put the up-down folding mobile phone into the top surface of the jaw seat 31, and push the mobile phone to the lower jaw 34 to stop, in this process, the right jaw one 32 and the left jaw 33 on both sides will automatically move inward and clamp the two sides of the mobile phone due to the action of the rack and pinion 37; then move the upper jaw two 351 to the mobile phone to stop, finally screw the machine screw 38 into the specified threaded hole to lock the upper jaw two 351, so that the mobile phone is stably clamped and locked. After clamping and locking, the anti-theft jaw assembly 3 can be put on the connecting assembly 2, and the fastening connection of the anti-theft jaw assembly 3 and the connecting assembly 2 is completed by using the screw.

[0066] The working principle of the embodiment is as follows: when the anti-theft jaw assembly 3 clamps the mobile phone, the jaw seat 31 presses the detection column 2301 downward, pushes the mounting plate 23 to press the pressure switch 28, so that the detection circuit is in a normally closed state; at the same time, the connecting assembly 2 rotates and positions through the flange 1201 and the connecting groove 2101, so that the spring contact pin 2201 and the contact pin 1301 stably contact and conduct the circuit. If someone forcibly pulls the mobile phone: the anti-theft wire 25 pulls the connecting head 2501 to drive the fixed cylinder 2502 to move downward, causing the pressure switch 28 to lose pressure and trigger the alarm; if the anti-theft jaw assembly 3 is disassembled, the detection column 2301 resets and rises to make the mounting plate 23 disengage from the pressure switch 28 to trigger the alarm; if the alarm host 1 is forcibly pulled and moved, the micro switch 113 of the base 16 will also trigger the alarm when it is loosened. Through multi-stage mechanical linkage and circuit on-off monitoring, the mobile phone displacement, disassembly, angle adjustment abnormality and host loosening are comprehensively protected.

[0067] The embodiments of the present application are given for illustration and description only, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the present application and its practical application, and to enable others skilled in the art to understand the present application in order to design various embodiments with various modifications for specific use.

Claims

1. A mobile phone display electronic anti-theft device, comprising an alarm host (1), a connection assembly (2) and an anti-theft claw assembly (3), characterized in that: The connecting assembly (2) is rotatably installed at the top end of the alarm host (1), and the anti-theft claw assembly (3) is tightly installed at the top end of the connecting assembly (2). The alarm host (1) comprises an outer cylinder (11), a connecting disc (12) is installed at the inner top end of the outer cylinder (11), a connecting cavity (1203) is arranged at the center of the connecting disc (12), an electric circuit board I (13) is fixedly installed at the outer side close to the connecting cavity (1203), a plurality of contact pins (1301) are installed at the top end of the electric circuit board I (13), and the top ends of the plurality of contact pins (1301) are arranged to pass through the top surface of the connecting disc (12); and a winding device (17) is installed in the inner portion of the outer cylinder (11). The connecting assembly (2) comprises a connecting base (21), a step is arranged at the bottom end of the connecting base (21) and is adapted to be connected with the inner top end of the outer cylinder (11), an electric circuit board III (22) is fixedly installed in the inner portion of the connecting base (21), a plurality of spring contact pins (2201) are installed at the bottom end of the electric circuit board III (22), the bottom ends of the plurality of spring contact pins (2201) pass through the bottom surface of the connecting base (21) and are adapted to be correspondingly connected with the top ends of the plurality of contact pins (1301), and an anti-theft wire (25) is rotatably connected at the center of the bottom end of the connecting base (21) and is fixedly connected with the winding drum of the winding device (17); and a detection mechanism for detecting the state of the anti-theft claw assembly (3) is installed in the inner portion of the connecting assembly (2). The anti-theft claw assembly (3) comprises a claw base (31), two groups of slide grooves are arranged at the top end of the claw base (31) in the horizontal and vertical directions, and claws are slidably installed in the four groups of slide grooves and are adapted to clamp the mobile phone. The claw comprises a right claw I (32), a left claw (33), a lower claw (34), an upper claw I (35), a right claw II (321) and an upper claw II (351), a gear (37) is rotatably installed at the center of the claw base (31), the right claw I (32), the left claw (33) and the lower claw (34) are provided with racks which are adapted to be engaged with the gear (37), a plurality of lock holes are equidistantly arranged at the bottom sides of the upper claw I (35) and the right claw II (321), two threaded holes are arranged at the bottom side of the claw base (31), machine screws (38) are spirally connected in the threaded holes, the top ends of the machine screws (38) are adapted to be inserted into the lock holes, the upper claw I (35) and the right claw II (321) are locked, and a cover plate (36) is fixedly connected at the top end of the claw base (31).

2. The electronic anti-theft device for mobile phone display according to claim 1, characterized in that: A plurality of flanges (1201) are equiangularly arranged at the top end of the connecting disc (12), transition curved surfaces are arranged between the two ends of the flanges (1201) and the top surface of the connecting disc (12), a connecting groove (2101) which is adapted to the flanges (1201) is arranged at the top end of the connecting base (21), when the connecting groove (2101) is completely connected with the flanges (1201), the bottom ends of the spring contact pins (2201) are correspondingly connected with the top ends of the contact pins (1301).

3. The electronic anti-theft device for mobile phone display according to claim 2, characterized in that: The bottom end of the connecting disc (12) is fixedly provided with a lower magnet (114) between two groups of adjacent flanges (1201); the inside of the connecting seat (21) is fixedly provided with a plurality of upper magnets (213) corresponding to the lower magnet (114), which can be correspondingly adsorbed with the lower magnet (114).

4. The electronic anti-theft device for mobile phone display as claimed in claim 1, wherein: The bottom end of the connecting seat (21) is provided with a connecting ring (2102), the top end of the anti-theft wire (25) is provided with a connecting head (2501), the top end of the connecting head (2501) is rotatably clamped with a fixed cylinder (2502), the top end of the fixed cylinder (2502) penetrates into the inside of the connecting seat (21) from the bottom end of the connecting ring (2102); the detection mechanism comprises a mounting plate (23) and a pressure switch (28) mounted in the inside of the connecting seat (21), the bottom end of the mounting plate (23) is provided with a plurality of optical axes, the inside of the connecting seat (21) is provided with a plurality of mounting holes in sliding connection with the optical axes; the pressure switch (28) is fixed to the top end of the fixed cylinder (2502) and is in contact connection with the bottom end of the mounting plate (23), and the pressure switch (28) is electrically connected with the circuit board three (22) through a wire; the top end of the mounting plate (23) is vertically provided with a detection column (2301) on one side; the top end of the connecting seat (21) is fixedly connected with a top cover (24), and the top cover (24) is provided with a through hole corresponding to the detection column (2301) for penetrating out.

5. The electronic anti-theft device for mobile phone display as claimed in claim 4, wherein: The outer side of the fixed cylinder (2502) is clamped with a limiting ring (29) at the bottom end of the connecting ring (2102), the outer side of the connecting head (2501) is sleeved with a locking ring (27), the top end of the locking ring (27) is provided with a connecting hole connected with the outer side of the connecting ring (2102), and the bottom end of the connecting hole is arranged in abutment with the limiting ring (29); the outer side of the connecting ring (2102) is provided with a plurality of L-shaped clamping grooves at equal angles; the top end of the connecting hole is provided with a plurality of clamping blocks (2702) capable of clamping connection with the L-shaped clamping grooves; the outer side of the locking ring (27) is provided with an annular groove (2701); one side of the connecting cavity (1203) is provided with a threaded hole, and a limiting stud one (14) is installed through the threaded hole; when the connecting assembly (2) is installed to the top end of the alarm host (1), one end of the limiting stud one (14) can extend into the annular groove (2701) to limit the connecting assembly (2).

6. The electronic anti-theft device for mobile phone display as claimed in claim 5, wherein: The inside of the connecting seat (21) is provided with a locking plate (212) at the bottom end of the mounting plate (23), the bottom end of the locking plate (212) is provided with a guide shaft, and the inside of the connecting seat (21) is provided with a through hole in sliding connection with the guide shaft; the bottom end of the locking plate (212) is provided with a locking shaft, the bottom end of the locking shaft passes out of the connecting seat (21), the top end of the locking ring (27) is provided with a limiting hole (2703), when the clamping block (2702) of the locking ring (27) is completely clamped into the L-shaped clamping groove, the locking shaft is inserted into the limiting hole (2703) in correspondence, the locking plate (212) and the mounting plate (23) are connected with a spring (210), the bottom side of the top cover (24) is provided with a threaded hole at the position corresponding to the locking plate (212), and the threaded hole is connected with a limiting stud (211) through a threaded hole, and the end of the limiting stud (211) is arranged in abutment with the locking plate (212).

7. The electronic anti-theft device for mobile phone display as claimed in claim 6, wherein: One side of the circuit board three (22) is provided with an interface, the interface is connected with a charging wire (26), the bottom end of the connecting seat (21) is provided with two groups of counterbores, the bottom end of the clamping block seat (31) is provided with a threaded hole in correspondence with the counterbores, and the counterbores are provided with fastening screws, and one end of the fastening screw is connected with the threaded hole of the clamping block seat (31) in correspondence.

8. The electronic anti-theft device for mobile phone display as claimed in claim 1, wherein: The inside of the outer cylinder body (11) is fixedly provided with an inner cylinder body (15), the bottom end of the connecting seat (21) is provided with a plurality of connecting columns (1202), and the connecting columns (1202) are fixedly connected with the top end of the inner cylinder body (15) through fastening screws; the bottom end of the outer cylinder body (11) is connected with a base (16), the base (16) is fixedly connected with the bottom end of the inner cylinder body (15) through fastening screws; the top end of the base (16) is connected with a mounting seat (18), one side of the mounting seat (18) is fixedly provided with an alarm (19); the inside of the mounting seat (18) is provided with a circuit board two (110), the bottom side of the circuit board two (110) is provided with a power switch (112) and a micro switch (113), and the base (16) is provided with a through slot in correspondence with the power switch (112) and the micro switch (113) respectively; one side of the circuit board two (110) is connected with a power line (111); the circuit board two (110) is electrically connected with the alarm (19) and the circuit board one (13) through wires.

9. The electronic anti-theft device for mobile phone display as claimed in claim 1, wherein: When the mobile phone to be clamped is a straight plate type, the right clamping block one (32), the left clamping block (33), the lower clamping block (34) and the upper clamping block one (35) are slidably installed in the sliding groove of the clamping block seat (31), and one end of the right clamping block one (32), the left clamping block (33), the lower clamping block (34) and the upper clamping block one (35) is a 180° bent claw head for clamping the top side edge of the straight plate type mobile phone. When the mobile phone to be clamped is a left-right folding style, the right claw two (321), the left claw (33), the lower claw (34) and the upper claw one (35) are slidably installed in the sliding groove of the claw seat (31), one end of the left claw (33), the lower claw (34) and the upper claw one (35) is a 180° bent claw head, one end of the right claw two (321) is a limiting claw, the limiting claw is composed of a vertical section and an inclined section, the vertical section is used for limiting the hinge position of the folding screen mobile phone, and the inclined section is used for supporting the screen turned over; When the mobile phone to be clamped is an up-down folding style, the right claw one (32), the left claw (33), the lower claw (34) and the upper claw two (351) are slidably installed in the sliding groove of the claw seat (31), one end of the right claw one (32), the left claw (33) and the lower claw (34) is a 180° bent claw head, one end of the upper claw two (351) is a folding inclined style, and is used for limiting the hinge position of the folding screen mobile phone.

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