Elastic sheet with stable elasticity and burglar alarm thereof
By designing a spring with multiple rotationally symmetrical contact pieces, increasing the contact area and limiting structure, the problem of accidental power disconnection caused by loose spring pieces is solved, thus improving the stability and reliability of the anti-theft device.
Patent Information
- Application Number
- CN202422743923.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-11
AI Technical Summary
The contact area between the spring and the lock cylinder in existing anti-theft devices is small and the elasticity is insufficient. It is easy to loosen due to collision or misoperation, resulting in accidental power cut-off and false alarms.
A flexible and stable spring is designed, which uses multiple rotationally symmetrical contact pieces. The floating piece fits into the lock cylinder to increase the contact area. Both the floating piece and the fixed piece are elastic. The inner side of the floating piece is subjected to the pressure of the lock cylinder, and the outer side is supported by the fixed piece. The limiting is achieved by the convex ring engaging with the groove of the lock cylinder. The through hole reduces the installation resistance.
It enhances the contact stability between the spring and the lock cylinder, reduces loosening and axial movement, prevents accidental power outages, and improves the performance stability of the anti-theft device.
Smart Images
Figure CN223469142U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a theftproof device technical field, specifically a spring piece and theftproof device of elastic stability. BACKGROUND
[0002] The theftproof device for the market prevents theft through the mode that the lock needle passes through the commodity and inserts the lock core, and its general structure is that: the tail end of the lock needle is connected on the PCB board, the head end of the lock needle is inserted on the lock core, the lock core is electrically connected with the PCB board, thereby forming a closed loop, and the theftproof device is powered on. When the theftproof device is maliciously destroyed, the circuit is disconnected, and the theftproof device gives an alarm.
[0003] The lock core is generally connected with the PCB board through the spring piece. One end of the spring piece is connected with the PCB board through the wire, and the other end is provided with the convex contact sheet, and the pressure between the contact sheet and the lock core is generated through the deformation of the contact sheet, so as to realize the connection.
[0004] The above structure, after long time use, because the contact area of the contact sheet and the lock core is small, and the elasticity is also small, the plastic deformation is easy to occur, the loose between the contact sheet and the lock core is caused, especially in the case that the staff or the guest is accidentally collided, the impact on the theftproof device is caused, the axial movement of the spring piece is caused, the contact sheet is separated from the lock core, the power-off of the theftproof device is caused, and the false alarm is caused.
[0005] Therefore, how to overcome the above defects has become a problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENTS
[0006] In order to solve the technical problems in the background art, the utility model discloses a spring piece and theftproof device of elastic stability.
[0007] The utility model provides a spring piece of elastic stability, including the spring piece body of circular ring, the one end of spring piece body is opposite lock core and is provided with multiple rotation symmetry and convex contact sheet, the contact sheet has elasticity, and through its abutting against lock core, realizes electric connection, and the contact sheet is V-shaped, and its opening direction is away from lock core;
[0008] The contact sheet comprises a fixed sheet and a floating sheet.
[0009] One end of the fixed sheet is connected with the spring piece body, and the other end is connected with one end of the floating sheet.
[0010] The other end of the floating sheet is suspended.
[0011] When the spring piece body is assembled with the lock core, the floating sheet approaches the fixed sheet and is attached to the lock core.
[0012] The beneficial effects of the above arrangement are: 1. After the spring body and the lock cylinder are assembled, the floating piece is attached to the lock cylinder, the contact area of the spring and the lock cylinder is increased, the elastic deformation of the floating piece produces a more stable pressure between the spring and the lock cylinder, and the spring is not prone to looseness; 2. The inner side of the floating piece is subjected to the pressure of the lock cylinder, and the outer side is also subjected to the supporting force of the fixed piece, and the fixed piece also has elasticity, so the elastic force of the floating piece is greater, and the elastic deformation is not prone to occur.
[0013] To enable the floating piece to be stably compressed after the spring body and the lock cylinder are assembled, a further design is that the inclination angle of the floating piece is greater than the inclination angle of the side wall of the lock cylinder.
[0014] To avoid axial movement of the spring during impact, a further design is that the middle position of the floating piece is provided with a convex ring; the convex ring protrudes inwardly from the contact piece; and the outer wall of the lock cylinder is provided with an annular groove for clamping the convex ring.
[0015] The structure of the convex ring is that the cross section of the convex ring is arc-shaped, and the connection between the convex ring and the contact piece is circularly arc-shaped.
[0016] To facilitate clamping of the convex ring and the groove, and to facilitate disassembly of the spring body and the lock cylinder, a further design is that the cross section of the convex ring is a poor arc shape.
[0017] If the elasticity of the floating piece is too large, it will cause a large resistance when the spring body and the lock cylinder are assembled, and the installation is difficult, based on this, a further improvement is that a through hole is formed in the contact piece. The specific structure of the through hole is that the through hole penetrates the fixed piece and the floating piece.
[0018] Due to the resistance of the spring body and the lock cylinder assembly, the main source is the clamping of the convex ring and the groove, based on this, a further improvement is that the through hole penetrates the convex ring.
[0019] The utility model discloses still disclose a kind of anti-theft device, a spring piece of elastic stability. So setting, the performance of anti-theft device is more stable, and error alarm is not prone to occur.
[0020] The beneficial effects of the utility model are: 1. After the spring body and the lock cylinder are assembled, the floating piece is attached to the lock cylinder, the contact area of the spring and the lock cylinder is increased, the elastic deformation of the floating piece produces a more stable pressure between the spring and the lock cylinder, and the spring is not prone to looseness; 2. The inner side of the floating piece is subjected to the pressure of the lock cylinder, and the outer side is also subjected to the supporting force of the fixed piece, and the fixed piece also has elasticity, so the elastic force of the floating piece is greater, and the elastic deformation is not prone to occur; 3, convex ring clamping groove, realize the installation limit of spring body and lock cylinder, spring is not prone to axial movement, so that the performance of anti-theft device is more stable. BRIEF DESCRIPTION OF DRAWINGS
[0021] The utility model is further described below in connection with the drawings and examples.
[0022] Fig. 1 is the position structure schematic view of the shell body and the lock cylinder before assembling in the utility model;
[0023] Fig. 2 is the main view sectional view of the shell body and the lock cylinder after assembling in the utility model;
[0024] Fig. 3 is the partial parts schematic view of the burglar alarm in the utility model;
[0025] In the drawing: 1, shell body; 2, lock cylinder; 3, contact piece; 21, recess; 31, fixed piece; 32, floating piece; 33, convex ring; 34, through hole. DETAILED DESCRIPTION
[0026] The utility model will be further explained in detail in combination with the drawings. These drawings are all simplified schematic views, just to schematically show the basic structure of the utility model, therefore it just shows the structure related to the utility model.
[0027] The utility model is not limited to the following specific embodiments, the person skilled in the art can adopt other various specific embodiments to implement the utility model according to the content disclosed in the utility model, or all fall within the protection scope of the utility model for simple changes or changes using the design structure and idea of the utility model. It needs to be explained that in the case of no conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.
[0028] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second" and the like are just for the description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.
[0029] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication。For ordinary skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.
[0030] Embodiment one:
[0031] As Figs. 1-3 The utility model discloses a spring piece of elastic stability, including the circular ring spring piece body 1, and the spring piece body 1 is provided with multiple rotation symmetry and the convex contact piece 3 of protruding to the one end of lock cylinder 2, and the contact piece 3 has elasticity, and through its abutting lock cylinder 2, realizes electric connection, and the contact piece 3 is V-shaped, and its opening direction is away from lock cylinder 2.
[0032] The contact piece 3 includes fixed sheet 31 and floating sheet 32. One end of the fixed sheet 31 is integrally formed with the inner side of the spring piece body 1, the other end is integrally formed with one end of the floating sheet 32, and the connecting part is circularly arc transition; The other end of the floating sheet 32 is suspended.
[0033] The inclination angle of the floating sheet 32 is greater than the inclination angle of the side wall of the lock cylinder 2, so when the spring piece body 1 is assembled with the lock cylinder 2, the floating sheet 32 is close to the fixed sheet 31, and is attached to the lock cylinder 2. The greater the inclination angle of the floating sheet 32, the greater the elasticity.
[0034] As Fig. 2 When the spring piece body 1 is assembled with the lock cylinder, the floating sheet 32 is attached to the lock cylinder 2, the contact area of the spring piece and the lock cylinder 2 is increased, the elastic force generated by the elastic deformation of the floating sheet 32 and the pressure between the lock cylinder 2 are more stable, and are not easy to loosen. Moreover, the inner side of the floating sheet 32 is pressed by the lock cylinder 2, and the outer side is also supported by the fixed sheet 31, and the fixed sheet 31 also has elasticity, so the elastic force of the floating sheet 32 is greater, and is not easy to deform.
[0035] The middle position of the floating sheet 32 is provided with a convex ring 33; The convex ring 33 protrudes to the inner side of the contact piece 3; The outer wall of the lock cylinder 2 is provided with an annular groove 21 for clamping the convex ring 33. By clamping the convex ring 33 in the groove 21, the spring piece body 1 and the lock cylinder 2 are limited in position, and the spring piece is not easy to move axially, so that the performance of the burglar alarm is more stable. The cross section of the convex ring 33 is a poor arc shape, and the two ends are circularly arc transition; The concave surface of the groove 21 is also a corresponding poor arc shape. Such setting not only makes the convex ring 33 clamped in the groove 21, which can play a guiding role, but also facilitates the disassembly of the spring piece body 1 and the lock cylinder 2.
[0036] If the elastic floating piece 32 is too elastic, it will cause the resistance to be large when the elastic piece body 1 is assembled with the lock core 2, and the installation is difficult, therefore a long circular through hole 34 is arranged on the contact piece 3, the through hole 34 penetrates the fixed piece 31 and the floating piece 32. The through hole 34 is also used for the weight reduction of the elastic piece, and the purpose of saving materials is achieved.
[0037] Due to the resistance of the assembly of the elastic piece body 1 and the lock core 2, the main source is the clamping of the convex ring 33 and the groove 21, therefore the through hole 34 is arranged to penetrate the structure of the convex ring 33.
[0038] Embodiment two:
[0039] The utility model discloses still a kind of burglar alarm, including the elastic piece of one kind of elastic stability of embodiment one. So set, the performance of burglar alarm is more stable, and it is not easy to occur false alarm.
[0040] With the above ideal embodiment according to the utility model as inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. An elastic stabilizing spring piece, comprising a circular ring-shaped spring piece body (1), a plurality of rotationally symmetrical and protruding contact pieces (3) being provided at one end of the spring piece body (1) facing a lock cylinder (2), the contact pieces (3) having elasticity, through which the contact pieces (3) abut against the lock cylinder (2) to realize electrical connection, characterized in that: the contact pieces (3) are V-shaped, with the opening direction thereof being away from the lock cylinder (2); the contact pieces (3) comprise fixed pieces (31) and floating pieces (32); one end of the fixed pieces (31) is connected with the spring piece body (1), and the other end thereof is connected with one end of the floating pieces (32); the other end of the floating pieces (32) is suspended; when the spring piece body (1) is assembled with the lock cylinder (2), the floating pieces (32) are close to the fixed pieces (31) and are attached to the lock cylinder (2); the inclination angle of the floating pieces (32) is greater than the inclination angle of the side wall of the lock cylinder (2); a convex ring (33) is arranged at the middle position of the floating pieces (32); the convex ring (33) is protruded inwardly of the contact pieces (3); an annular groove (21) is arranged on the outer wall of the lock cylinder (2) for clamping the convex ring (33); the cross section of the convex ring (33) is arc-shaped, with a circular arc transition at the connection with the contact pieces (3); the cross section of the convex ring (33) is inferior arc-shaped; a through hole (34) is arranged on the contact pieces (3); the through hole (34) penetrates the fixed pieces (31) and the floating pieces (32); the through hole (34) penetrates the convex ring (33); and the elastic stabilizing spring piece comprises any one of claims 1-8. 2. A resiliently stabilized spicule according to claim 1, wherein: 3. A resiliently stabilized spicule according to claim 2, wherein: 4. A resiliently stabilized spicule according to claim 3, wherein: 5. A resiliently stabilized spicule according to claim 4, wherein: 6. A resiliently stabilized spicule according to claim 5, wherein: 7. A resiliently stabilized spicule according to claim 6, wherein: 8. A resiliently stabilized spicule according to claim 7, wherein: 9. An anti-theft device, characterized in that: