Burglar alarm with non-return assembly

By designing a check component in the anti-theft device, the coordination of the limit ring and the sensing ring is used to ensure that the sensing ring comes into contact after the trigger rod extends out, and the buzzer continues to make sound, solving the problem that the buzzer does not make sound due to the reset of the trigger rod, and improving the anti-theft effect of the anti-theft device.

CN223140241UActive Publication Date: 2025-07-22CHANGZHOU HONGJU INTELLIGENT MFG CO LTD
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Patent Information

Application Number
CN202422336829.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2025-07-22
Estimated Expiration
2034-09-24

AI Technical Summary

Technical Problem

The existing anti-theft device is easily reset after triggering, resulting in the buzzer not making a sound, and the staff cannot be reminded in time, increasing the risk of items being stolen.

Method used

A check component is designed, including the upper and lower housing, buzzer, circuit board, trigger rod, limit ring and sensing ring. Through the design of limit ring and sensing ring, the sensing ring ensures that the trigger rod is contacted after the trigger rod extends out, and the buzzer continues to make sound to prevent the trigger rod from resetting.

Benefits of technology

The buzzer continues to make sound after triggering, reminding staff to deal with it in a timely manner to reduce the risk of items being stolen.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a burglar alarm with a non-return assembly. The burglar alarm comprises an outer shell with an upper shell, a lower shell and an inner cavity, the buzzer and the circuit board are arranged in the inner cavity; the mounting part is suitable for connecting the shell with an object; one end of the trigger rod penetrates through the lower shell and abuts against the lower shell, and the other end of the trigger rod is connected with the inner wall of the upper shell through an elastic piece; the limiting ring is arranged on the peripheral wall of the trigger rod; the first induction ring is arranged at the bottom of the limiting ring and is connected with the circuit board; the second induction ring is arranged on the inner wall of the lower shell and is connected with the circuit board; wherein the first induction ring and the second induction ring are arranged up and down; the non-return assembly limits separation of the first induction ring and the second induction ring after contact; due to the existence of the non-return assembly, when the trigger rod extends out of the lower shell, a person cannot press the end part of the trigger rod to enable the trigger rod to retract into the outer shell, at the moment, the first induction ring and the second induction ring are always in a contact state, and the buzzer continuously sounds.
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Description

Technical Field

[0001] The utility model relates to the field of article anti-theft, in particular to an anti-theft device with a check component. Background Art

[0002] During the use of an anti-theft device with a check component, when the anti-theft device with a check component is separated from an article, a buzzer will be triggered to remind the staff to go to the scene to observe the actual situation of the article;

[0003] In the use of an existing anti-theft device with a check component, the trigger rod will be reset manually, so that the buzzer does not sound, and thus the staff cannot arrive at the scene in time, which easily leads to the risk of the article being stolen.

[0004] In summary, how to implement an anti-theft device with a check component that, when triggered, restricts the reset of the trigger rod and enables the buzzer to continuously sound has become an urgent problem for researchers in this field. Summary of the Invention

[0005] The technical problem to be solved by the utility model is: how to implement an anti-theft device with a check component that, when triggered, restricts the reset of the trigger rod and enables the buzzer to continuously sound;

[0006] To solve the above technical problem, the technical solution adopted by the utility model is:

[0007] The utility model is an anti-theft device with a check component, including: a housing having an upper housing, a lower housing and an inner cavity; a buzzer and a circuit board disposed in the inner cavity; a mounting portion adapted to connect the housing to an article; a trigger rod, one end of which passes through the lower housing and abuts against it, and the other end of which is connected to the inner wall of the upper housing through an elastic member; a limiting ring disposed on the outer peripheral wall of the trigger rod; a first induction ring disposed at the bottom of the limiting ring and connected to the circuit board; a second induction ring disposed on the inner wall of the lower housing and connected to the circuit board; wherein, the first induction ring and the second induction ring are arranged vertically; a check component that restricts the separation of the first induction ring and the second induction ring after contact;

[0008] In this solution, when an article is connected to the housing through the mounting portion, the elastic member is compressed, and the end of the trigger rod does not extend out of the lower housing. At this time, the first induction ring and the second induction ring are in a separated state, and the buzzer does not sound;

[0009] When the article is separated from the housing, the elastic member releases elastic force, and the end of the trigger rod extends out of the lower housing until the limiting ring abuts against the inner wall of the lower housing. At this time, the first induction ring and the second induction ring come into contact, triggering the buzzer to remind the staff to go to the scene to observe the situation;

[0010] Due to the existence of the check component, when the trigger rod extends out of the lower housing, it is impossible for a person to retract the trigger rod into the housing by pressing the end of the trigger rod. At this time, the first induction ring and the second induction ring are always in contact, and the buzzer sounds continuously.

[0011] To achieve the positioning of the elastic member, the present utility model adopts that a positioning groove for positioning the end of the elastic member is provided at the top of the trigger rod; a positioning rod for positioning the end of the elastic member is provided at the top of the upper housing;

[0012] The elastic member can be a spring. The upper part of the elastic member is positioned by the positioning rod, and the lower part of the elastic member is positioned by the positioning groove.

[0013] To illustrate the specific structure of the installation part, the present utility model adopts that the installation part includes: a slot provided at the bottom of the lower housing; when the article is a sheet, it is inserted along the slot to connect the article to the housing;

[0014] When the article is in a connected state with the housing, the end of the trigger rod does not extend out of the lower housing; the installation part can also adopt a magnetic attraction method to realize the connection between the housing and the article.

[0015] To illustrate the specific structure of the check component, the present utility model adopts that the check component includes: a slot is provided laterally along the lower housing; a card slot is provided on the circumferential outer wall of the trigger rod; an elastic insertion plate, which is adapted to be inserted laterally into the slot from the lower housing and installed therein; the elastic insertion plate cooperates with the card slot to limit the reset of the trigger rod;

[0016] In this solution, the elastic insertion plate is inserted laterally into the slot. When the article is separated from the housing, the trigger rod extends out, and the elastic insertion plate is matched with the upper card slot of the trigger rod to limit the reset of the trigger rod. An installation plate is also installed on the side of the elastic insertion plate. When the elastic insertion plate is matched with the slot, the installation plate is installed at the opening of the slot, so that the installation plate is flush with the lower housing.

[0017] To illustrate the specific structure of the elastic insertion plate, the present utility model adopts that the elastic insertion plate includes: a plate body, with a concave part in the middle thereof; a positioning hole, which is provided at the concave part, for the trigger rod to pass through, and the inner circle of the positioning hole is positioned and connected with the card slot; an opening, which is provided on the side of the positioning hole. When the elastic insertion plate is moved laterally, the trigger rod separates the elastic insertion plate and the trigger rod from the opening.

[0018] When the trigger rod passes through the positioning hole, the inner diameter of the positioning hole is slightly smaller than the outer diameter of the trigger rod. However, the friction here does not affect the movement of the trigger rod driven by the elastic member. When the trigger rod continues to move outwards until the card slot cooperates with the positioning hole, the trigger rod cannot be reset by pressing the end of the trigger rod at this time. If you want to reset it, only the staff can separate the mounting plate from the lower housing. Since there is an opening at the positioning hole, the elastic insertion plate can be laterally withdrawn along the opening to separate the positioning hole from the card slot.

[0019] Advantages of the present utility model: The present utility model is an anti-theft device with a check valve component. When an item is connected to the housing through the mounting part, the elastic member is compressed, and the end of the trigger rod does not protrude from the lower housing. At this time, the first induction ring and the second induction ring are in a separated state, and the buzzer does not sound. When the item is separated from the housing, the elastic member releases its elastic force, and the end of the trigger rod protrudes out of the lower housing until the limit ring abuts against the inner wall of the lower housing. At this time, the first induction ring and the second induction ring come into contact, triggering the buzzer to remind the staff to come to the scene to observe the situation. Due to the existence of the check valve component, when the trigger rod protrudes out of the lower housing, people cannot make the trigger rod retract into the outer housing by pressing the end of the trigger rod. At this time, the first induction ring and the second induction ring are always in contact, and the buzzer sounds continuously. Description of the Drawings

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 is a sectional view of the present utility model;

[0022] Figure 2 is Figure 1 an enlarged view of part A of

[0023] Figure 3 is a structural schematic diagram of the elastic insertion piece;

[0024] In the figure: 1 - outer housing, 2 - buzzer, 3 - circuit board, 4 - mounting part, 5 - trigger rod, 6 - elastic member, 7 - limit ring, 8 - first induction ring, 9 - second induction ring, 10 - positioning groove, 11 - upper housing, 12 - lower housing, 13 - inner cavity, 14 - positioning rod, 15 - slot, 16 - slot, 17 - card slot, 18 - elastic insertion plate, 19 - plate body, 20 - concave part, 21 - positioning hole, 22 - opening. Detailed Embodiments

[0025] The present utility model will now be further described in detail in conjunction with the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0026] As Figures 1-3As shown in the figure, the utility model is an anti-theft device with a check valve component, including: a housing 1 having an upper housing 11, a lower housing 12 and an inner cavity 13; a buzzer 2 and a circuit board 3 disposed in the inner cavity 13; a mounting portion 4 adapted to connect the housing 1 to an article; a trigger rod 5, one end of which passes through the lower housing 12 and abuts, and the other end of which is connected to the inner wall of the upper housing 11 through an elastic member 6; a limiting ring 7 disposed on the outer peripheral wall of the trigger rod 5; a first induction ring 8 disposed at the bottom of the limiting ring 7 and connected to the circuit board 3; a second induction ring 9 disposed on the inner wall of the lower housing 12 and connected to the circuit board 9; wherein the first induction ring 8 and the second induction ring 9 are arranged vertically; a check valve component that restricts the separation after the first induction ring 8 and the second induction ring 9 come into contact;

[0027] In this solution, when the article is connected to the housing through the mounting portion, the elastic member is compressed, and the end of the trigger rod does not protrude from the lower housing. At this time, the first induction ring and the second induction ring are in a separated state, and the buzzer does not sound;

[0028] When the article is separated from the housing, the elastic member releases its elastic force, and the end of the trigger rod protrudes out of the lower housing until the limiting ring abuts against the inner wall of the lower housing. At this time, the first induction ring and the second induction ring come into contact, triggering the buzzer to remind the staff to come to the scene to observe the situation;

[0029] Due to the existence of the check valve component, when the trigger rod protrudes out of the lower housing, the person cannot press the end of the trigger rod to retract the trigger rod into the housing body. At this time, the first induction ring and the second induction ring are always in contact, and the buzzer sounds continuously.

[0030] As Figure 1 shown, in order to position the elastic member, the utility model adopts a positioning groove 10 provided at the top of the trigger rod 5 for positioning the end of the elastic member 6; a positioning rod 14 provided at the top of the upper housing 11 for positioning the end of the elastic member 6;

[0031] The elastic member can be a spring. The upper part of the elastic member is positioned by the positioning rod, and the lower part of the elastic member is positioned by the positioning groove.

[0032] As Figure 1 shown, in order to illustrate the specific structure of the mounting portion, the utility model adopts that the mounting portion includes: a slot 15 provided at the bottom of the lower housing 12; when the article is a sheet body, it is inserted along the slot to connect the article to the housing;

[0033] When the article is in a connected state with the housing, the end of the trigger rod does not protrude from the lower housing; the mounting portion can also adopt a magnetic attraction method to realize the connection between the housing and the article.

[0034] As Figures 2-3As shown, in order to illustrate the specific structure of the check component, the present utility model adopts that the check component includes: a slot 16 is laterally opened along the side of the lower housing 12; a clamping groove 17 is opened on the outer circumferential wall of the trigger rod 5; an elastic insertion plate 18, which is adapted to be inserted and installed into the slot 16 from the side of the lower housing 12; the elastic insertion plate 18 cooperates with the clamping groove 17 to limit the reset of the trigger rod 5;

[0035] In this solution, the elastic insertion plate is laterally inserted into the slot. When the article is separated from the housing, the trigger rod extends out, and the elastic insertion plate is matched with the upper clamping groove of the trigger rod to limit the reset of the trigger rod. An installation plate is also installed on the side of the elastic insertion plate. When the elastic insertion plate is matched with the slot, the installation plate is installed at the opening of the slot, so that the installation plate is flush with the lower housing.

[0036] As Figure 3 As shown, in order to illustrate the specific structure of the elastic insertion plate, the present utility model adopts that the elastic insertion plate 18 includes: a plate body 19, the middle part of which has a concave part 20; a positioning hole 21, which is opened at the concave part 20, and is for the trigger rod 5 to pass through, and the inner ring of the positioning hole 21 is positioned and connected with the clamping groove 17; an opening 22, which is arranged on the side of the positioning hole 21. When the elastic insertion plate 18 is laterally moved, the trigger rod 5 separates the elastic insertion plate 18 and the trigger rod 5 from the opening 22;

[0037] When the trigger rod passes through the positioning hole, the inner diameter of the positioning hole is slightly smaller than the outer diameter of the trigger rod, but the friction here does not affect the movement of the elastic member driving the trigger rod. When the trigger rod continues to move outwards until the clamping groove is matched with the positioning hole, at this time, the trigger rod cannot be reset by pressing the end of the trigger rod, that is, the positioning hole cannot deform to make the inner diameter of the positioning hole larger than the outer diameter of the trigger rod; if you want to reset, you can only let the staff separate the installation plate from the lower housing. Since there is an opening at the positioning hole, the elastic insertion plate can be laterally drawn out along the opening to separate the positioning hole from the clamping groove.

[0038] Taking the above ideal embodiment according to the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present utility model. The technical scope of the present utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An anti-theft device with a check valve component, characterized in that, Comprising: A housing having an upper housing, a lower housing, and an inner cavity; A buzzer and a circuit board disposed in the inner cavity; A mounting portion adapted to connect the housing to an article; A trigger rod, one end of which passes through the lower housing and abuts, and the other end of which is connected to the inner wall of the upper housing by an elastic member; A limiting ring disposed on the outer peripheral wall of the trigger rod; A first induction ring disposed at the bottom of the limiting ring and connected to the circuit board; A second induction ring disposed on the inner wall of the lower housing and connected to the circuit board; Wherein, the first induction ring and the second induction ring are arranged vertically; A check component that restricts the separation after the first induction ring and the second induction ring come into contact; When an article is connected to the housing, the elastic member is compressed, and the first induction ring and the second induction ring are in a separated state, and at this time the buzzer does not sound; When the article is detached from the housing, the elastic member releases elastic force, and the trigger rod and the limiting ring perform a linear motion until the first induction ring and the second induction ring come into contact, triggering the buzzer.

2. The anti-theft device with a check component according to claim 1, characterized in that, A positioning groove for positioning the end of the elastic member is provided at the top of the trigger rod; A positioning rod for positioning the end of the elastic member is provided at the top of the upper housing.

3. The anti-theft device with a check component according to claim 1, characterized in that, The mounting portion includes: A slot provided at the bottom of the lower housing; When the article is a sheet, it is inserted along the slot to connect the article to the housing.

4. The anti-theft device with a check component according to claim 1, characterized in that The check component includes: A slot is laterally provided in the lower housing; A card slot is provided on the outer peripheral wall of the trigger rod; An elastic insertion plate adapted to be inserted laterally into the lower housing and mounted in the slot; The elastic insertion plate cooperates with the card slot to restrict the reset of the trigger rod.

5. The anti-theft device with a check component according to claim 4, characterized in that, The elastic insertion plate includes: A plate body having a concave portion in the middle; A positioning hole is provided at the concave portion, through which the trigger rod passes, and the inner circle of the positioning hole is positioned and connected to the card slot; An opening is provided on the side of the positioning hole. When the elastic insertion plate is laterally moved, the trigger rod separates the elastic insertion plate and the trigger rod from the opening.