Battery-protected merchandise security device

Abstract

The application relates to a battery-removing-preventing commodity anti-theft device which can not only prevent a battery from being intentionally removed, but also protect a cover from occupying the internal space of a shell and simultaneously simplify the internal structure of the device, one end of the cover is hinged to a battery cover, the inner side of the other end of the cover is provided with a lock block, a through hole is arranged on the shell, the lock block passes through the through hole when the cover covers screws or buckles, a lock groove on the lock block is located in the shell, a rotating lock pin is arranged in the shell, when the lock pin in the rotating lock pin is rotated to the pin head of the lock pin and the lock groove are in plug-in cooperation, the other end of the cover is fixedly connected with the shell, and at the moment, the commodity anti-theft device is in a protection state. Advantages: the novel battery-removing-preventing commodity anti-theft device can not only prevent a battery from being intentionally removed, but also protect a cover from occupying the internal space of a shell, and simultaneously simplify the internal structure of the device, so that the assembling efficiency is improved and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of commodity anti-theft, and particularly relates to a commodity anti-theft device with a battery that cannot be disassembled. BACKGROUND

[0002] In the field of EAS commodity anti-theft, the existing products on the market are mainly divided into two categories: conventional hard tags and electronic tags. The conventional hard tags generally include four components: a shell, a lock core, a frequency element, and an attachment device. The electronic tags, in addition to the frequency element detection device (commonly known as a "detection antenna"), also have an electronic functional module that can detect illegal unlocking or passing through the detection antenna. When illegal unlocking or passing through the detection antenna occurs, the electronic tag provides a self-alarm function. The component that provides power for the electronic functional module of the electronic tag is a battery.

[0003] Generally, there are two ways to install the battery: one way is to design the battery as non-removable to improve the reliability of anti-theft. The disadvantage of this way is that the battery has limited power, and when the power is used up, the tag loses the self-alarm function, greatly reducing the service life of the product. The other way is to design the battery as removable, which can replace the battery when the power is insufficient, improving the service life of the product. The removable battery is usually fixed by screwing the battery cover. To prevent illegal disassembly of the battery, the existing method uses a specially designed screw and screwdriver for installation and disassembly. However, it is inevitable that when the illegal disassembly tool is found, the battery can still be disassembled, thereby disabling the self-alarm function.

[0004] Our Chinese patent application 202122428547.X discloses a commodity anti-theft device with a battery that cannot be disassembled, which includes a main body part and an insertion part. The insertion part can be inserted into the main body part to lock the goods. The main body part includes a shell, a lock core assembly inside the shell, and an electronic assembly. The electronic assembly has a battery inside, the shell has a battery cover, the battery cover has a screw hole, the horizontal plane of the screw hole is lower than the horizontal plane of the battery cover, a screw passes through the screw hole on the battery cover to fix and install the battery cover on the shell, and the screw hole is embedded in the shell. The shell has a stop block that covers the screw hole when the anti-theft device is in a locked state to prevent the battery cover from being disassembled. When the anti-theft device is in an unlocked state, the stop block can be moved away from the position of the screw hole, and the battery cover can be disassembled. However, the stop block in the corresponding commodity anti-theft device of this patent application is set inside the shell, which not only occupies valuable internal space resources, but also makes the internal structure more complex, greatly increasing the production difficulty and reducing the production efficiency. SUMMARY

[0005] Design purpose: in order to avoid the shortcomings in the background art, a battery can be designed to prevent the battery from being intentionally removed, and the cover does not occupy the internal space of the shell, and the internal structure of the device can be simplified.

[0006] Design scheme: in order to achieve the above design purpose.

[0007] 1. One end of the protective cover is hinged to the battery cover, and the inner side of the other end of the protective cover is provided with a lock block. A through hole is provided on the shell. When the protective cover covers the screw or buckle, the lock block passes through the through hole and the lock groove on the lock block is located in the shell. A rotating lock pin is arranged in the shell. When the lock pin in the rotating lock pin is rotated to the pin head of the lock pin and the lock groove is inserted and matched, the other end of the protective cover is fixedly connected with the shell. At this time, the merchandise anti-theft device is in a protection state. This is one of the technical features of the present application. The purpose of this design is that one end of the protective cover is hinged to the battery cover, and the inner side of the other end of the protective cover is provided with a lock block. A through hole is provided on the shell. When the protective cover covers the screw or buckle, the lock block passes through the through hole and the lock groove on the lock block is located in the shell. A rotating lock pin is arranged in the shell. When the lock pin in the rotating lock pin is rotated to the pin head of the lock pin and the lock groove is inserted and matched, the other end of the protective cover is fixedly connected with the shell. At this time, the merchandise anti-theft device is in a protection state. First, the protective cover can protect the battery and prevent the battery from being removed. Second, the protective cover in this scheme is external, and when the protective cover is opened, it is on the outside of the merchandise anti-theft device, that is, it does not occupy the internal space of the shell when it is opened. This not only releases the internal space of the merchandise anti-theft device, but also makes the merchandise anti-theft device smaller and simplifies the internal structure.

[0008] 2. The shell further comprises a rotating lock pin, and the lock block further comprises a lock groove capable of being inserted and matched with the rotating lock pin. This is the second technical feature of the present application. The purpose of this design is that the shell further comprises a rotating lock pin, and the lock block further comprises a lock groove capable of being inserted and matched with the rotating lock pin. In this way, two rotating lock pins simultaneously lock the protective cover, and the locking effect is better. The protective cover cannot be opened as long as any one of the rotating lock pins is not unlocked.

[0009] 3. The two lock pins can rotate around the same rotating shaft. This is the third technical feature of the present application. The purpose of this design is that the two lock pins can rotate around the same rotating shaft. In this way, the number of accessories can be reduced, and the space required for the two rotating lock pins can be reduced. That is, not only the cost can be reduced, but also the internal space of the merchandise anti-theft device can be made more compact, that is, the volume can be smaller.

[0010] 4、The rotating latch pin comprises a latch pin, a rotating shaft and a pushing member, the rotating shaft is fixedly installed in the shell, the shell is provided with a sliding groove for the sliding block in the pushing member to move, the outer side of the shell is provided with a strip-shaped hole which is communicated with the sliding groove, the pushing handle in the pushing member is located outside the shell and is fixedly connected with the sliding block in the sliding groove through the connecting part, one end of the latch pin is movably connected with the rotating shaft and the other end is movably connected with the sliding block, and the moving sliding block can drive the latch pin to rotate around the rotating shaft when the sliding block is moved along the sliding groove by the pushing handle. The technical feature four of the present application is that the rotating latch pin comprises a latch pin, a rotating shaft and a pushing member, the rotating shaft is fixedly installed in the shell, the shell is provided with a sliding groove for the sliding block in the pushing member to move, the outer side of the shell is provided with a strip-shaped hole which is communicated with the sliding groove, the pushing handle in the pushing member is located outside the shell and is fixedly connected with the sliding block in the sliding groove through the connecting part, one end of the latch pin is movably connected with the rotating shaft and the other end is movably connected with the sliding block, and the moving sliding block can drive the latch pin to rotate around the rotating shaft when the sliding block is moved along the sliding groove by the pushing handle. The purpose of the design is that the rotating latch pin comprises a latch pin, a rotating shaft and a pushing member, the rotating shaft is fixedly installed in the shell, the shell is provided with a sliding groove for the sliding block in the pushing member to move, the outer side of the shell is provided with a strip-shaped hole which is communicated with the sliding groove, the pushing handle in the pushing member is located outside the shell and is fixedly connected with the sliding block in the sliding groove through the connecting part, one end of the latch pin is movably connected with the rotating shaft and the other end is movably connected with the sliding block, and the moving sliding block can drive the latch pin to rotate around the rotating shaft when the sliding block is moved along the sliding groove by the pushing handle. Firstly, the latch pin rotates flexibly and is not prone to mechanical jamming during movement, and secondly, the latch pin, the rotating shaft and the pushing member are linked together, so that the pushing handle can move in the vertical direction relative to the shell to realize the unlocking or locking of the protective cover (while the pushing block in the prior art moves horizontally, that is, the pushing block moves into the shell), and the freedom of the stroke setting of the pushing handle is better (the setting position and the stroke length) compared with the prior art, so that the design and layout of the device are facilitated.

[0011] 5、The pushing member comprises a sliding block, a pushing handle, a spring and a spring clamping block, the inner side of the sliding block is provided with the spring through the spring clamping block, and the outer side of the sliding block is provided with the pushing handle through the connecting part. When the pushing handle pushes the sliding block to move along the sliding groove and the moving sliding block can drive the latch pin to rotate around the rotating shaft and make the pin head of the latch pin and the lock groove be inserted and matched, the spring is compressed. The technical feature five of the present application is that the pushing member comprises a sliding block, a pushing handle, a spring and a spring clamping block, the inner side of the sliding block is provided with the spring through the spring clamping block, and the outer side of the sliding block is provided with the pushing handle through the connecting part. When the pushing handle pushes the sliding block to move along the sliding groove and the moving sliding block can drive the latch pin to rotate around the rotating shaft and make the pin head of the latch pin and the lock groove be inserted and matched, the spring is compressed. The spring is set, so that the sliding block automatically returns to the original state after the external force pushing the pushing handle is removed or disappears.

[0012] 6、The movable end of the insertion part is inserted into the lock hole of the lock core assembly through a head hole and is locked by the lock core assembly; the inner side surface of the slider of the pushing member in the lock pin is provided with a slope guide, and the slope guide is matched with the concave-convex hole of the outer side surface of the lock block in the lock core assembly; when the slider moves, the slope guide can gradually extrude the lock block to move along the movable slot where the lock block is located; at this time, the design of the lock block compressing the lock block spring is the sixth technical feature of the present application. The purpose of this design is that the slope guide on the slider and the concave-convex hole in the lock block are matched, so that the opening of the movable end and the opening of the protective cover can be linked, that is, when the push handle is pushed upward, the movable end and the protective cover can be opened at the same time; when there is only one movable end of the insertion part in the commodity anti-theft device, the movable end and the protective cover are linked and opened, but when there are two movable ends of the insertion part in the commodity anti-theft device, the user can select linked opening and unlinked opening according to needs; when linked opening is selected, the two push handles are pushed upward at the same time, at this time, the two movable ends of the insertion part are opened at the same time, and the protective cover is also opened; when unlinked opening is selected, one push handle is first pushed upward, at this time, the corresponding movable end of the insertion part is opened, and the protective cover is still locked, then the other push handle is pushed upward, at this time, the corresponding movable end of the insertion part is opened, in this way, the protective cover remains in the locked state during the process.

[0013] 7、The inner wall surface of the narrow hole section is an inclined surface, and the lower end of the movable end of the insertion part is a tapered end, which is the seventh technical feature of the present application. The purpose of this design is that the inner wall surface of the narrow hole section is an inclined surface, and the lower end of the movable end of the insertion part is a tapered end, so that when the movable end is inserted into the lock hole, the tapered end forms a wedge-shaped contact with the inclined surface of the narrow hole section, and as the movable end is gradually pressed down, the lock block moves along the movable slot where the lock block is located, so that the wide hole section gradually moves below the movable end, at this time, the lock block spring is continuously compressed, when the wide hole section is opposite to the movable end and the annular groove is located in the lock hole, the horizontal component force of the pushing lock block disappears, the lock block returns to the original position under the action of the restoring force of the lock block spring, at this time, the column section where the annular groove is located is matched with the narrow hole section, that is, the movable end can be directly inserted and locked, so that the locking is convenient and efficient.

[0014] Technical solution: A battery can prevent the dismantling of the commodity anti-theft device, comprising a main body part, a detachable battery cover is arranged on the shell in the main body part, one end of the battery cover is hinged or inserted with the shell and the other end of the battery cover is fixedly connected with the shell through screws or through buckles, one end of the protective cover is hinged with the battery cover and the inner side of the other end of the protective cover is provided with a lock block, a through hole is arranged on the shell, the lock block passes through the through hole when the protective cover covers the screws or buckles, and the lock groove on the lock block is located in the shell, a rotating lock pin is arranged in the shell, when the lock pin in the rotating lock pin is rotated to the pin head of the lock pin and the lock groove are inserted and matched, the other end of the protective cover is fixedly connected with the shell, at this time, the commodity anti-theft device is in a protection state.

[0015] Compared with the background art, the battery can prevent the dismantling of the commodity anti-theft device, which not only prevents the battery from being intentionally removed, but also the protective cover does not occupy the internal space of the shell, and at the same time, the internal structure of the device can be simplified, thereby improving the assembly efficiency and reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of a battery can prevent the dismantling of the commodity anti-theft device.

[0017] Figure 2 It is an explosion structural schematic diagram of a battery can prevent the dismantling of the commodity anti-theft device.

[0018] Figure 3 It is an assembly structure schematic diagram of the battery cover and the protective cover.

[0019] Figure 4 It is a top view structural schematic diagram of the lock cylinder assembly.

[0020] Figure 5 It is a structural schematic diagram of the pusher.

[0021] Figure 6 It is a sectional view structural schematic diagram of a battery can prevent the dismantling of the commodity anti-theft device (one side view when in a protection state).

[0022] Figure 7 It is a sectional view structural schematic diagram of a battery can prevent the dismantling of the commodity anti-theft device (the other side view when in a protection state).

[0023] Figure 8 It is a sectional view structural schematic diagram of a battery can prevent the dismantling of the commodity anti-theft device (both side push handles are pushed up).

[0024] Figure 9 It is a sectional view structural schematic diagram of a battery can prevent the dismantling of the commodity anti-theft device (one side push handle is pushed up).

[0025] Wherein: the main body part 1, the shell 2, the through hole 21, the sliding groove 22, the strip-shaped hole 23, the end through hole 24, the movable slot 25, the battery cover 3, the protective cover 4, the lock block 41, the lock slot 42, the tapered head 43, the rotating lock pin 5, the lock pin 51, the rotating shaft 52, the pusher 53, the sliding block 531, the push handle 532, the spring 533, the spring clamping block 534, the inclined surface guide rail 535, the insertion part 6, the movable end 61, the lock core assembly 7, the lock block 71, the lock block spring 72, the clamping hole 73, the lock hole 74, the narrow hole section 741, the wide hole section 742, the electronic assembly 8. DETAILED DESCRIPTION

[0026] Example 1: refer to the attached Figures 1-9The utility model provides a kind of battery can prevent dismantling of merchandise anti-theft device, including main part 1, detachable battery cover 3 is equipped on shell 2 in the main part 1, after opening battery cover 3, user can replace battery to merchandise anti-theft device, shell 2 is constituted by first shell and second shell, one end of the battery cover 3 is hinged or inserted with shell 2 and the other end of battery cover 3 is fixedly connected with shell by screw or by buckle, i.e., one end of the battery cover 3 is hinged with shell 2 and the other end of battery cover 3 is fixedly connected with shell by screw, or one end of the battery cover 3 is hinged with shell 2 and the other end of battery cover 3 is fixedly connected with shell by buckle, or one end of the battery cover 3 is inserted with shell 2 and the other end of battery cover 3 is fixedly connected with shell by screw, or one end of the battery cover 3 is inserted with shell 2 and the other end of battery cover 3 is fixedly connected with shell by buckle, wherein one end of battery cover 3 is hinged with shell 2, i.e., one end of battery cover 3 is connected with one side of shell 2 by hinge, so that battery cover 3 can be turned by hinge when the other end of battery cover 3 is in open state, wherein one end of battery cover 3 is inserted with shell 2, i.e., one end of battery cover 3 is provided with protrusion and one side of shell 2 is provided with recess, battery cover 3 is inserted and matched by protrusion and recess to realize insertion and matching, so that battery cover 3 can be separated from shell 2 by separation of protrusion and recess when the other end of battery cover 3 is in open state, in addition, the other end of battery cover 3 is fixedly connected with the other side of shell by screw or by buckle, which is prior art, so it is not described here, one end of protective cover 4 is hinged with battery cover 3 and the inner side of the other end of protective cover 4 is provided with lock block 41, shell 2 is provided with through hole 21, lock block 41 passes through through hole 21 and lock groove 42 on lock block 41 is located in shell 2 when protective cover 4 covers screw or buckle, shell 2 is provided with rotating lock pin 5, protective cover 4 is fixedly connected with shell 2 when lock pin 51 in rotating lock pin 5 is rotated to the insertion and matching of pin head of lock pin 51 and lock groove 42, at this time, merchandise anti-theft device is in protection state, meanwhile, the outer side of closed protective cover 4 is flush with the outer surface of shell 2 (the back of shell 2, battery compartment is generally arranged on the back of shell) and battery cover 3, when battery cover 3 needs to be opened, merchandise anti-theft device can be first released from protection state, then protective cover 4 is opened, and finally battery cover 3 is opened.

[0027] The shell 2 is also provided with a rotating lock pin 5, and the lock block 41 is also provided with a lock groove 41 capable of being inserted and matched with the rotating lock pin 5, and the two lock grooves 41 can be realized by replacing the U-shaped groove on the lock block 41. The two lock pins 51 can rotate around the same rotating shaft 52, that is, the rotating sleeves of the two lock pins 51 are sleeved with the same rotating shaft 52, so that the setting of accessories (only one rotating shaft 52) can be reduced, and the setting space required by the two rotating lock pins 5 can be reduced, that is, the cost can be reduced, and the internal setting of the merchandise anti-theft device can be more compact, that is, the volume is smaller.

[0028] The inner side of the lock block 41 is provided with a tapered head 43, the size of the bottom surface of the tapered head 43 matches the size of the inner side of the lock block 41, when the inclined guide rail on the sliding block is matched with the clamping hole on the lock block, the protective cover 4 is pressed with force, at this time the tapered head 43 will gradually push the pin heads of the two lock pins apart, at this time the two lock pins rotate around the rotating shaft, the rotating lock pin pushes the corresponding sliding block to move along the sliding groove 22, the moving sliding block compresses the spring 533, when the two pin heads face the U-shaped groove, the sliding block pushed back by the restoring force of the spring 533 pushes the two lock pins to rotate around the rotating shaft respectively, so that the two pin heads are inserted into the U-shaped groove respectively, that is, the protective cover 4 is fixedly connected with the shell.

[0029] The rotating lock pin 5 comprises a lock pin 51, a rotating shaft 52 and a pushing piece 53, the rotating shaft 52 is fixedly installed in the shell 2, the rotating shaft 52 is fixedly installed on the first shell or the second shell, the shell 2 is provided with a sliding groove 22 for the sliding block 531 in the pushing piece 53 to move, the outer side of the shell 2 is provided with a strip-shaped hole 23 which is communicated with the sliding groove 22, the pushing handle 532 in the pushing piece 53 is located on the outer side of the shell 2 and is fixedly connected with the sliding block 531 in the sliding groove 22 through the connecting part, one end of the lock pin 51 is movably connected with the rotating shaft 52, the other end is movably connected with the sliding block 531, one end of the lock pin 51 is provided with a rotating sleeve, the lock pin 51 is movably connected with the rotating shaft 52 through the sleeve and the rotating shaft, the other end of the lock pin 51 is provided with a plug, the lower end of the sliding block 531 is provided with a strip-shaped through hole, the other end of the lock pin 51 is movably connected with the sliding block 531 through the plug and the strip-shaped through hole, the width of the strip-shaped through hole matches the diameter of the plug, and the length of the strip-shaped through hole is greater than the diameter of the plug, when the sliding block 531 is moved along the sliding groove 22 by the pushing handle 532, the moving sliding block 531 can drive the lock pin 51 to rotate around the rotating shaft 52.

[0030] The pushing member 53 comprises a sliding block 531, a pushing handle 532, a spring 533 and a spring clamping block 534, the inner side of the sliding block 531 is provided with the spring 533 through the spring clamping block 534, the outer side of the sliding block 531 is provided with the pushing handle 532 through a connecting part, when the pushing handle 532 pushes the sliding block 531 to move along the sliding groove 22 and the moving sliding block 531 can drive the locking pin 51 to rotate around the rotating shaft 52 and make the pin head of the locking pin 51 to be inserted and matched with the locking slot 42, the spring 533 is compressed; further comprising an inclined guide rail 535, the inner side of the sliding block 531 is provided with the inclined guide rail 535.

[0031] Further comprising an insertion part 6, both ends of the insertion part 6, one end is a fixed end, the other end is a movable end 61, the shell 2 is provided with two end hole through holes 24, the shell 2 of the main body part 1 is provided with a lock cylinder assembly 7, the fixed end of the insertion part 6 is fixedly connected in the shell 2 through one end hole through hole 24, the movable end 61 of the insertion part 6 is inserted into the lock hole 74 of the lock cylinder assembly 7 through one end hole through hole 24 and the movable end 61 of the insertion part 6 is locked by the lock cylinder assembly 7; the inner side of the sliding block 531 of the pushing member 53 in the rotating locking pin 5 is provided with the inclined guide rail 535 and the inclined guide rail 535 is concave-convex matched with the clamping hole 73 of the outer side of the locking block 71 in the lock cylinder assembly 7, when the sliding block 531 moves, the inclined guide rail 535 can gradually extrude the locking block 71 to move along the movable slot 25 where the locking block 71 is located, that is, the locking block 71 moves along the movable slot 25 where it is located under the extrusion of the inclined guide rail 535, at this time, the locking block spring 72 is compressed. The insertion part 2 comprises a cable and a movable end 61 provided at one end of the cable, the movable end 61 is a cylindrical plug, the cylindrical plug is provided with an annular groove on the column body and the front end of the cylindrical plug is a tapered head, the diameter of the cylindrical plug is smaller than the diameter of the wide hole section 742, so that the movable end 61 can be inserted or pulled out of the lock hole 74 through the wide hole section 742, the diameter of the cylindrical plug is larger than the diameter of the narrow hole section 741 and the diameter of the column body section where the annular groove is located is smaller than the diameter of the narrow hole section 741, when the lock cylinder assembly 7 is installed in the shell 2, the two end hole through holes 24 provided on the upper end surface of the shell are located directly above the corresponding narrow hole section 741, when the movable end 61 needs to be inserted or pulled out of the corresponding lock hole 74, the locking block 71 is pushed to move along the movable slot 25 where the locking block 71 is located, so that the wide hole section 742 and the corresponding end hole through hole 24 are realized to be communicated, at this time, the locking block spring 72 is compressed, at this time, the movable end 61 can be pulled out of the lock hole 74 or inserted into the lock hole 74; when the movable end 61 is inserted into the lock hole 74, the external force pushing the locking block 71 is removed, the locking block 71 returns to the original position under the restoring force of the locking block spring 72, at this time, the column body section where the annular groove is located is clamped with the narrow hole section 741, that is, the movable end 61 is locked, at this time, the movable end 61 and the fixed end, after the movable end 61 is locked, the movable end 61 is electrically connected with the electronic assembly 8 by contacting with the conduction spring, the fixed end can be directly electrically connected with the electronic assembly 8.

[0032] The lock cylinder assembly 7 comprises two lock blocks 71 and a lock block spring 72, the lock block spring 72 is arranged between the two lock blocks 71, the outer side surface of the lock block 71 is provided with a clamping hole 73, the upper end surface of the lock block 71 is provided with a lock hole 74, and the lock hole 74 penetrates the upper and lower end surfaces of the lock block 71. The lock hole 74 is composed of a narrow hole section 741 and a wide hole section 742. When the movable end 61 in the insertion part 6 is in the wide hole section 742, the end of the insertion part 6 is in an unlocked state. When the movable end 61 in the insertion part 6 is in the narrow hole section 741, the end of the insertion part 6 is in a locked state.

[0033] The lock cylinder assembly 7 comprises two lock blocks 71 and a lock block spring 72, the lock block spring 72 is arranged between the two lock blocks 71, the outer side surface of the lock block 71 is provided with a clamping hole 73, the upper end surface of the lock block 71 is provided with a lock hole 74, and the lock hole 74 penetrates the upper and lower end surfaces of the lock block 71. The lock hole 74 is composed of a narrow hole section 741 and a wide hole section 742. When the movable end 61 in the insertion part 6 is in the wide hole section 742, the end of the insertion part 6 is in an unlocked state. When the movable end 61 in the insertion part 6 is in the narrow hole section 741, the end of the insertion part 6 is in a locked state.

[0034] The inner wall surface of the narrow hole section 741 is an inclined surface, and the lower end of the movable end 61 of the insertion portion is a tapered end.

[0035] It should be understood that the above-mentioned embodiments, although the design idea of the present application is described in detail, the description is only a simple description of the design idea of the present application, but not a limitation of the design idea of the present application. Any combination, addition or modification beyond the design idea of the present application falls within the scope of the present application.

Claims

1. A battery-resistant anti-theft device, comprising a main body, wherein a detachable battery cover is provided on the housing of the main body, one end of the battery cover is hinged or inserted into the housing, and the other end of the battery cover is fixedly connected to the housing by screws or clips, characterized in that: the protective cover... One end of the protective cover is hinged to the battery cover, and the inner side of the other end of the protective cover is provided with a locking block. The housing has a through hole. When the protective cover covers the screw or buckle, the locking block passes through the through hole and the locking groove on the locking block is located inside the housing. The housing is provided with a rotating locking pin. When the locking pin in the rotating locking pin is rotated until the pin head of the locking pin is engaged with the locking groove, the other end of the protective cover is fixedly connected to the housing. At this time, the anti-theft device is in a protected state. The rotating locking pin includes a locking pin, a rotating shaft, and a pushing member. The rotating shaft is fixedly installed inside the housing. The housing is provided with a sliding groove for the slider in the pushing member to move. The outer side of the housing is provided with a strip-shaped hole. The pusher, connected to the slide groove, has a push handle located outside the housing and is fixedly connected to the slider located in the slide groove via a connecting part. One end of the locking pin is movably connected to the rotating shaft, and the other end is movably connected to the slider. When the slider is pushed along the slide groove by the push handle, the moving slider can drive the locking pin to rotate around the rotating shaft. The pusher includes a slider, a push handle, a spring, and a spring retainer. A spring is provided on the inner side of the slider via the spring retainer, and a push handle is provided on the outer side of the slider via the connecting part. When the push handle pushes the slider to move along the slide groove and the moving slider can drive the locking pin to rotate around the rotating shaft and make the pin head of the locking pin engage with the locking groove, the spring is compressed.

2. The anti-theft device for batteries with tamper-proof design according to claim 1, characterized in that: The housing is also provided with a rotating locking pin, and the locking block is also provided with a locking groove that can be inserted and engaged with the rotating locking pin.

3. The anti-theft device for batteries with tamper-proof design according to claim 2, characterized in that: The two locking pins can rotate around the same axis.

4. A battery-resistant anti-theft device according to claim 1, characterized in that: The inner side of the locking block is provided with a cone head.

5. A battery-resistant anti-theft device according to claim 1, characterized in that: It also includes an insertion part, with two ends, one of which is a fixed end and the other is a movable end. The housing has two end through holes. The main body housing has a lock cylinder assembly. The fixed end of the insertion part is fixedly connected to the housing through one end through hole. The movable end of the insertion part is inserted into the lock hole of the lock cylinder assembly through one end through hole and is locked by the lock cylinder assembly. The inner side of the slider of the pusher in the rotating lock pin is provided with a sloping guide rail, and the sloping guide rail is in convex-concave engagement with the snap hole on the outer side of the lock block in the lock cylinder assembly. When the slider moves, the sloping guide rail can gradually squeeze the lock block to move along the movable groove where the lock block is located. At this time, the lock block compresses the lock block spring.

6. A battery-resistant anti-theft device according to claim 2, characterized in that: It also includes an insertion part, both ends of which are movable ends. The main body housing is provided with a lock cylinder assembly. The movable ends of the two insertion parts are inserted into the corresponding lock holes of the lock cylinder assembly through a through hole, and the movable ends of the insertion parts are locked by the lock cylinder assembly. The inner side of the slider of the pusher in the rotating lock pin is provided with a sloping guide rail, and the sloping guide rail is in convex-concave engagement with the locking hole on the outer side of the lock block in the lock cylinder assembly. When the slider moves, the sloping guide rail can gradually squeeze the lock block to move along the movable groove where the lock block is located. At this time, the lock block compresses the lock block spring.

7. A battery-resistant anti-theft device according to claim 5 or 6, characterized in that: The lock cylinder assembly includes two lock blocks and a lock block spring. The lock block spring is located between the two lock blocks. The outer side of the lock block is provided with a locking hole. The upper end face of the lock block is provided with a lock hole that passes through the upper and lower end faces of the lock block. The lock hole consists of a narrow hole section and a wide hole section. When the movable end of the insertion part is in the wide hole section, that end of the insertion part is in the unlocked state. When the movable end of the insertion part is in the narrow hole section, that end of the insertion part is in the locked state.

8. A battery-resistant anti-theft device according to claim 7, characterized in that: The inner wall surface of the narrow hole section is inclined, and the lower end of the movable end of the insertion part is tapered.

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