CN215488564U

CN215488564U - Anti-dismantling structure and fire alarm equipment using same

Info

Publication number: CN215488564U
Application number: CN202121483288.4U
Authority: CN
Inventors: 李波
Original assignee: Zhejiang Huaxiao Technology Co ltd
Current assignee: Zhejiang Huaxiao Technology Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-11
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to an anti-disassembly structure and fire-fighting alarm equipment using the same. An anti-disassembly structure comprises a main machine body and a base, wherein one of the main machine body and the base is provided with a limiting groove, the other one of the main machine body and the base is provided with an anti-disassembly part, and the anti-disassembly part extends into and is clamped against the inner wall of the limiting groove so as to limit the main machine body and the base to be separated; the base and/or the surface of host computer body has seted up prevents tearing open the hole, prevent tearing open the hole with prevent tearing open the portion just to setting up, prevent tearing open the hole and be used for supplying extracting tool to stretch into, and make prevent tearing open the portion and can take place elastic deformation, in order to break away from the restriction of spacing recess. This prevent tearing open structure must rely on extracting tool to stretch into and prevent tearing open the hole to force elastic connection portion to take place elastic deformation, thereby can drive and prevent tearing open the portion and break away from spacing recess, prevent effectively that host computer body and base from being dismantled by bare-handed, improved the reliability of structure.

Description

Anti-dismantling structure and fire alarm equipment using same

Technical Field

The utility model relates to the technical field of fire fighting, in particular to an anti-disassembly structure and fire fighting alarm equipment using the same.

Background

The fire alarm equipment is widely applied to public places, but personnel in the public places are complex in structure, high in supervision difficulty, low in installation height and simple in installation mode, and can be easily disassembled by hands, so that great hidden danger is brought to fire early warning.

The fire alarm equipment is usually prevented from being disassembled in an electronic device mode, namely, after being disassembled, the fire alarm equipment can send out abnormal reminding so as to inform related personnel to reinstall or replace the fire alarm equipment; but in fact this kind of mode can not prevent that fire alarm equipment from being dismantled, has not only reduced fire alarm equipment's reliability, has also brought very big fire control hidden danger.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a disassembly prevention structure and a fire alarm apparatus using the same.

An anti-disassembly structure comprises a base and a main machine body, wherein one of the base and the main machine body is provided with a limiting groove, the other one is provided with an anti-disassembly part, and the anti-disassembly part extends into and is clamped against the inner wall of the limiting groove so as to limit the main machine body from being separated from the base; the surface of the base and/or the host body is provided with an anti-disassembly hole, the section size of the anti-disassembly hole is smaller than or equal to a preset value, the anti-disassembly hole and the anti-disassembly part are arranged oppositely, the anti-disassembly hole is used for allowing a disassembly tool to extend into, and the anti-disassembly part can elastically deform to break away from the limit of the limiting groove.

Further, the base includes base body and elastic connection portion, elastic connection portion keeps away from the end connection of base body's one end prevent tearing open the portion, elastic connection portion does prevent tearing open the elastic deformation of portion and provide elasticity.

Further, prevent tearing open the portion including the orientation the protruding anticreep of establishing of spacing recess is protruding, the anticreep protruding with elastic connection portion connects to can block support in the inner wall of spacing recess.

Further, the anticreep arch is provided with first inclined plane, first inclined plane orientation base body, and with elastic connection portion's contained angle is the obtuse angle.

Further, prevent tearing open the portion including actuating the inclined plane, actuating the inclined plane with elastic connecting portion deviates from one side of base body is connected, and just right prevent tearing open the hole setting, actuating the inclined plane with elastic connecting portion's contained angle is the obtuse angle.

Furthermore, the actuating inclined plane is provided with a limiting bulge on one side of the actuating inclined plane, which is far away from the main machine body, and the limiting bulge is used for limiting the moving distance of the elastic connecting part.

Furthermore, the bottom surface of the main body is recessed inwards to form a containing groove, and the containing groove is used for containing the base; the side wall of the accommodating groove comprises a first inner wall, a plurality of first bulges are arranged on the first inner wall, the surface of the base is inwards sunken to form a plurality of blind holes matched with the first bulges, and the first bulges are inserted in the blind holes.

Furthermore, one side of the first bulge facing the base extends towards the side wall of the accommodating groove to form a second bulge, the surface of the blind hole facing the host body is provided with a guide groove communicated with the blind hole, the second bulge and the first bulge are all inserted into the blind hole, and one side of the first bulge facing the base is abutted to the guide groove.

Further, the lateral wall of storage tank still includes the second inner wall, the second inner wall with first inner wall becomes the contained angle setting, a plurality of constant head tanks have been seted up to the second inner wall, the base outwards be provided with a plurality ofly with the location arch that the constant head tank matches, the location arch can stretch into and the butt in the constant head tank.

The utility model also provides a fire-fighting alarm device, which comprises the anti-disassembly structure.

According to the anti-disassembly structure provided by the utility model, after the host body is fixedly matched with the base, the anti-disassembly part extends into and is clamped against the inner wall of the limiting groove so as to limit the host body and the base to be separated; through arranging the anti-dismantling hole into which fingers of a common person can not extend, the common person must extend into the anti-dismantling hole by means of a dismantling tool and force the elastic connecting part to elastically deform, so that the anti-dismantling part is driven to be separated from the limiting groove, and the main machine body and the base can be normally separated; effectively prevent that host computer body and base from being dismantled by bare-handed, improved the reliability of structure.

Drawings

FIG. 1 is a schematic structural view of a tamper-evident structure according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the tamper-evident structure of FIG. 1;

FIG. 3 is a schematic view of the base of the tamper-evident structure shown in FIG. 1;

fig. 4 is a schematic structural view of the main body in the detachment prevention structure shown in fig. 1.

Description of the element reference numerals

100. A tamper-evident structure; 10. a base; 11. a base body; 12. blind holes; 13. a guide groove; 14. positioning the projection; 20. a host body; 21. a containing groove; 211. a first inner wall; 22. a first protrusion; 212. a second inner wall; 23. a second protrusion; 24. positioning a groove; 25. a limiting groove; 15. anti-dismantling holes; 16. a removal prevention section; 17. an elastic connection portion; 161. the anti-drop bulge; 1611. a first inclined plane; 1612. a second inclined plane; 162. an actuation ramp; 163. and a limiting bulge.

The present invention is described in further detail with reference to the drawings and the detailed description.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of an anti-tamper structure according to an embodiment of the present invention; FIG. 2 is a schematic cross-sectional view of the tamper-evident structure of FIG. 1; FIG. 3 is a schematic view of the base of the tamper-evident structure shown in FIG. 1; fig. 4 is a schematic structural view of the main body in the detachment prevention structure shown in fig. 1.

The anti-detachment structure 100 includes a main body 20 and a base 10. The main body 20 is used for accommodating circuit components, and the base 10 is used for mounting the main body 20. The base 10 is fixedly installed on the wall surface, the host body 20 is fixedly installed on the base 10, and the installation direction of the host body 20 installed on the base 10 is from top to bottom as shown in fig. 2. Of course, the installation direction of the main body 20 to the base 10 may be other directions according to different use environments and/or different structures.

The anti-disassembly structure 100 is applied to fire alarm devices, such as fire display panels and manual alarm buttons, and can be easily assembled and prevented from being disassembled. Of course, the tamper evident structure 100 may also be used in other devices, such as a display screen and a camera.

The base 10 includes a base body 11, and the base body 11 is substantially a hollow rectangular parallelepiped structure without a top surface. The base body 11 includes a bottom surface and side surfaces around the periphery of the bottom surface. The side of the base body 11 is used for connecting with the host body 20, and the bottom of the base body 11 is used for connecting with the wall. The through hole that is used for supplying the screw to wear to establish is seted up to the bottom surface of base body 11, and base body 11 is fixed in the wall through threaded connection, has advantages such as simple structure, connects reliably, installs and removes the convenience.

Preferably, the base body 11 is formed by enclosing a plastic plate, so that the base body 11 has a simple structure and lighter weight under the condition of certain strength, materials are effectively saved, and the production cost is reduced. Of course, the base body 11 may be made of other materials, such as metal materials, for example, aluminum plate, as long as the strength requirement and the installation requirement are met.

It can be understood that in other embodiments, the base body 11 can be mounted on a wall surface by bonding, clamping, or the like, as long as the base body 11 can be fixedly connected to the wall surface; the base body 11 may have other shapes, for example, a cylindrical base body 11, as long as it can be mounted on a wall surface and the main body 20.

The base 10 is provided with a blind hole 12, and the cross section of the blind hole 12 is approximately rectangular. The side of the base body 11 includes a first side substantially perpendicular to the mounting direction of the host body 20 to the base 10. The blind hole 12 is used for plugging with the host body 20. The first side of the base body 11 is recessed inwards to form a plurality of blind holes 12, the blind holes 12 are connected with the host body 20 in an inserting mode, the host body 20 can be limited to move along the direction approximately perpendicular to the installation direction of the host body 20 in the base 10 by a large margin, and the host body 20 is prevented from being separated from the base 10.

Preferably, the number of the blind holes 12 may be two, which is structurally reliable and can better limit the movement of the main body 20 and the base 10.

It is understood that in other embodiments, the blind hole 12 may have other shapes, such as a blind hole 12 with a circular cross section, as long as the first protrusion 22 can be inserted into the blind hole 12 to limit the movement of the host body 20.

Further, the surface of the blind hole 12 facing the main body 20 is opened with a guide groove 13, and the cross-sectional shape of the guide groove 13 is substantially rectangular. The guide groove 13 is communicated with the blind hole 12, and the guide groove 13 can play a role in guiding when being installed, so that the host body 20 and the base 10 are convenient to install.

It is understood that in other embodiments, the guide groove 13 may have other shapes, such as the guide groove 13 with a circular arc cross section, as long as the main body 20 and the base 10 can be easily installed.

In one embodiment, the base body 11 is provided with a plurality of positioning protrusions 14, and the positioning protrusions 14 are substantially rectangular parallelepiped structures. The side of the base body 11 includes a second side substantially parallel to the mounting direction of the host body 20 to the base 10. The positioning protrusions 14 are used for limiting the movement of the host body 20 and the base 10, the second side surface of the base body 11 extends outwards to form a plurality of positioning protrusions 14, and the positioning protrusions 14 are inserted into the host body 20, so that the host body 20 and the base 10 can be more conveniently and fixedly mounted.

Preferably, the number of the positioning protrusions 14 may be two, which is reliable in structure and can better limit the movement of the main body 20 and the base 10.

It is understood that in other embodiments, the positioning protrusion 14 may have other shapes, such as a cylindrical positioning protrusion 14, as long as the positioning protrusion 14 can be plugged with the host body 20.

It is understood that in other embodiments, the blind hole 12 may also be opened on the second side surface, the positioning protrusion 14 is correspondingly disposed on the first side surface, and the main body 20 is correspondingly disposed, in this case, the main body 20 and the base 10 are installed along the left-right direction shown in fig. 1, as long as the installation of the main body 20 and the base 10 can be realized.

The bottom surface of the main body 20 is recessed inward to form a receiving groove 21, and the receiving groove 21 is substantially a rectangular parallelepiped structure. The receiving groove 21 is used for mounting and receiving the base 10. The opening direction of the containing groove 21 is approximately consistent with the installation direction of the host body 20 installed on the base 10, and the bottom surface of the containing groove 21 contacts with the top surface of the base body 11, so that the host body 20 and the base 10 are convenient to align and install.

It is understood that, in other embodiments, the receiving groove 21 may have other shapes, such as a cylindrical receiving groove 21, as long as the base 10 can be installed and received.

The sidewall of the receiving groove 21 includes a first inner wall 211 and a second inner wall 212. The first inner wall 211 is substantially parallel to the first side surface of the base body 11, the second inner wall 212 is substantially parallel to the second side surface of the base body 11, and the first inner wall 211 and the second inner wall 212 are disposed substantially at a right angle. The first inner wall 211 is at least partially contacted with the first side surface of the base body 11, the host body 20 can be supported, the stress of the connection part of the host body 20 and the base body 11 is reduced, the stress of the whole structure is uniform, and the reliability of the structure is improved. The second inner wall 212 is at least partially in contact with the second side surface of the base body 11, and can limit the large-scale movement of the main body 20 and the base 10 in the direction substantially perpendicular to the mounting direction.

It is understood that, in other embodiments, the included angle between the first inner wall 211 and the second inner wall 212 may be other angles, such as an obtuse angle, as long as the accommodating groove 21 can be accommodated and connected to the host body 20.

In one embodiment, the main body 20 further includes a plurality of first protrusions 22 matching the blind holes 12, and the first protrusions 22 have a substantially rectangular parallelepiped structure. The first protrusion 22 is used to limit the large-scale movement of the host body 20 along the direction substantially perpendicular to the installation direction of the host body 20 on the base 10, and prevent the host body 20 from separating from the base 10. The first protrusion 22 is disposed on the first inner wall 211, the first protrusion 22 is inserted into the blind hole 12 and contacts with the inner wall of the blind hole 12, and the first protrusion 22 abuts against the bottom surface of the blind hole 12, so as to limit the host body 20 to move continuously along the installation direction of the host body 20 installed on the base 10, thereby further fixing the host body 20.

Preferably, the number of the first protrusions 22 may be two, which is reliable in structure and can better limit the movement of the main body 20 and the base 10.

It is understood that in other embodiments, the first protrusion 22 may have other shapes, such as a cylindrical first protrusion 22, as long as the first protrusion 22 can be inserted into the blind hole 12.

In one embodiment, the first protrusion 22 extends toward the second inner wall 212 toward the end of the base 10 and forms a second protrusion 23. The first protrusion 22 and the second protrusion 23 form a strip-like structure with a substantially T-shaped cross section. The second protrusion 23 and the first protrusion 22 are integrally inserted into the blind hole 12, so that the movement of the main body 20 and the base 10 can be further limited, and the strength of the joint between the main body 20 and the base 10 can be enhanced. The first projection 22 abuts against the guide groove 13 on the side facing the base 10, and can function as a guide when the main body 20 is attached to the base 10.

Preferably, the number of the second protrusions 23 may be two, which is reliable in structure and can better limit the movement of the main body 20 and the base 10.

It is understood that in other embodiments, the first protrusion 22 and the second protrusion 23 may be formed in other shapes, such as a "Y" shape, as long as the insertion into the blind hole 12 and the restriction of the movement of the host body 20 and the base 10 can be achieved.

In one embodiment, the main body 20 defines a plurality of positioning slots 24 for matching with the positioning protrusions 14. The positioning groove 24 is formed in the second inner wall 212, and the positioning groove 24 abuts against the positioning protrusion 14, so that the host body 20 can be limited from moving greatly along the direction approximately perpendicular to the installation direction of the host body 20 installed on the base 10, and the host body 20 and the base 10 can be limited from being separated from each other.

Preferably, the number of the positioning grooves 24 may be two, which can better limit the movement of the main body 20 and the base 10.

It is understood that, in other embodiments, the first protrusion 22 may be disposed on the second inner wall 212, the positioning groove 24 is correspondingly disposed on the first inner wall 211, and the base 10 is correspondingly disposed, as long as the installation and fixation of the host body 20 and the base 10 can be achieved.

In order to solve the above problems, after the main body 20 is fixedly matched with the base 10, the anti-detaching part 16 extends into and is clamped against the inner wall of the limiting groove 25 to limit the separation of the main body 20 and the base 10; through arranging the anti-dismantling hole 15 which can not be inserted by fingers of a common person, the anti-dismantling hole 15 is inserted by a dismantling tool, and the anti-dismantling part 16 is forced to generate elastic deformation so as to be separated from the limiting groove 25, so that the main body 20 and the base 10 can be normally separated; the main body 20 and the base 10 are effectively prevented from being disassembled by hands, and the reliability of the structure is improved.

The base 10 is provided with a tamper hole 15, and the cross section of the tamper hole 15 is substantially circular. Prevent tearing open hole 15 and be used for supplying extracting tool to stretch into, prevent tearing open hole 15 and prevent tearing open portion 16 just to setting up, prevent that the aperture of tearing open hole 15 is less, only can supply extracting tool to stretch into to make prevent tearing open portion 16 and can take place elastic deformation, in order to break away from spacing recess 25's restriction, and general people's finger can't stretch into prevents tearing open hole 15, prevents effectively that host computer body 20 and base 10 from being dismantled by bare-handed.

Preferably, the diameter of the anti-tamper hole 15 is less than or equal to 0.5cm, only a detaching tool with a small diameter can extend into the anti-tamper hole, and the rigidity of the detaching tool is high, so that the anti-tamper hole can not be bent and the anti-tamper part 16 can be forced to elastically deform under the action of external force.

It is understood that in other embodiments, the tamper-evident hole 15 may have other shapes, such as a hole with a cross-sectional dimension of less than or equal to 0.5cm by 0.5cm, as long as it is accessible for a removal tool to extend into but not accessible by a typical human finger.

In one embodiment, the base 10 is further provided with a tamper evident portion 16. Correspondingly, the bottom surface of the main body 20 is provided with a limiting groove 25, and the cross section of the limiting groove 25 is substantially rectangular. The detachment prevention portion 16 abuts against the limit groove 25, and can restrict the host body 20 from moving greatly in the mounting direction in which the host body 20 is mounted on the base 10, thereby preventing the host body 20 from being separated from the base 10.

It is understood that in other embodiments, the limiting groove 25 may have other structures, such as a cylindrical limiting groove 25, as long as the separation of the main body 20 from the base 10 can be limited.

It is understood that in other embodiments, the limiting groove 25 may be opened on the base 10, and accordingly, the detachment prevention portion 16 may be disposed on the main body 20 as long as it can limit the movement of the main body 20 along the installation direction of the main body 20 installed on the base 10; the anti-detaching hole 15 may be provided in the main body 20 as long as it is possible to facilitate the insertion of a detaching tool.

In one embodiment, the base 10 further comprises a resilient connecting portion 17. Elastic connection portion 17 is used for the separation to prevent tearing open 16 and spacing recess 25, and base body 11 is connected to elastic connection portion 17's one end, and the portion 16 is prevented tearing open in the other end connection, and elastic connection portion 17 can take place elastic deformation under the effect of external force to it breaks away from spacing recess 25 to drive the portion 16 of preventing tearing open.

In one embodiment, the detachment prevention portion 16 includes a detachment prevention protrusion 161, and the detachment prevention protrusion 161 has a substantially rectangular parallelepiped structure. The anti-disengaging protrusion 161 is used for limiting the separation of the host body 20 from the base 10, the anti-disengaging protrusion 161 is connected with one side of the elastic connecting portion 17 facing the anti-detaching hole 15, and can be clamped against the inner wall of the limiting groove 25, so that the host body 20 can be limited from moving in the installation direction of the base 10 along the host body 20.

Further, the coming-off preventing projection 161 includes a first inclined surface 1611. The first inclined plane 1611 faces the base body 11, and forms an obtuse angle with the elastic connecting portion 17; when the device is installed, the bottom surface of the main body 20 is in contact with the top surface of the base body 11 and slides from top to bottom on the top surface of the base body 11; the lower end surface of the main body 20 contacts with the first inclined surface 1611, and the anti-slip protrusion 161 can extend into and be clamped against the limiting groove 25, so that the main body 20 and the base 10 are convenient to install.

In one embodiment, the anti-slip projection 161 further includes a second inclined surface 1612. The second inclined plane 1612 and the first inclined plane 1611 are respectively disposed on two sides of the anti-falling protrusion 161, and an included angle between the second inclined plane 1612 and the installation direction of the host body 20 installed on the base 10 is a right angle or an obtuse angle. Without the removal tool, the movement of the main body 20 in the mounting direction in which the main body 20 is mounted to the base 10 can be more effectively restricted.

It is understood that in other embodiments, the anti-falling protrusion 161 may have other structures, such as a cylindrical anti-falling protrusion 161, as long as the host body 20 is prevented from being separated from the base body 11.

In one embodiment, the tamper evident portion 16 further includes an actuation ramp 162. The actuating inclined surface 162 is connected with one side of the elastic connecting part 17 far away from the base body 11 and is arranged opposite to the anti-dismounting hole 15, and the included angle between the actuating inclined surface 162 and the elastic connecting part 17 is an obtuse angle; when the disassembly tool is disassembled, the disassembly tool extends into the disassembly opening and abuts against the actuating inclined plane 162, the actuating inclined plane 162 can bear external force and transmit the external force to the elastic connecting part 17, and the elastic connecting part 17 is forced to elastically deform and drive the disassembly preventing part 16 to be separated from the limiting groove 25 due to certain elasticity of the elastic connecting part 17, so that the main body 20 and the base 10 can be normally separated.

The fact that the actuating inclined surface 162 is arranged opposite to the anti-disassembly hole 15 means that the projection of the actuating inclined surface 162 along the installation direction of the main body 20 on the base 10 at least partially overlaps with the end surface of the anti-disassembly hole 15, so that the disassembly tool can conveniently extend into the anti-disassembly hole 15 and the elastic connecting part 17 is easily elastically deformed.

In one embodiment, the tamper evident portion 16 further includes a stop protrusion 163. The limiting protrusion 163 is used for limiting the moving distance of the elastic connecting portion 17, one side of the actuating inclined surface 162 departing from the main body 20 is provided with the limiting protrusion 163, and the distance from the end surface of the limiting protrusion 163 facing the bottom surface of the base body 11 to the base body 11 is greater than or equal to the length of the anti-falling protrusion 161 and the limiting groove 25 in butt joint.

Preferably, the distance from the end surface of the limiting protrusion 163 facing the bottom surface of the base body 11 to the base body 11 is slightly greater than the abutting length of the anti-falling protrusion 161 and the limiting groove 25, so as to limit the elastic deformation amount of the elastic connection portion 17 and prevent the elastic connection portion 17 from being broken.

The utility model provides an anti-disassembly structure 100, which is characterized in that an anti-disassembly hole 15 which can not be inserted by fingers of a common person is arranged, a disassembly tool is required to be inserted into the anti-disassembly hole 15, and an elastic connecting part 17 is forced to generate elastic deformation, so that an anti-disassembly part 16 is driven to be separated from a limiting groove 25, and a main machine body 20 and a base 10 can be normally separated. Effectively prevent that host computer body and base from being dismantled by bare-handed, improved the reliability of structure.

The utility model also provides a fire-fighting alarm device using the anti-disassembly structure 100, which can be prevented from being disassembled by hands, thereby not only improving the reliability of the fire-fighting alarm device, but also reducing the fire-fighting hidden danger.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The anti-disassembly structure is characterized by comprising a base (10) and a host body (20), wherein one of the base (10) and the host body (20) is provided with a limiting groove (25), the other one of the base (10) and the host body (20) is provided with an anti-disassembly part (16), and the anti-disassembly part (16) extends into and is clamped against the inner wall of the limiting groove (25) so as to limit the separation of the base (10) and the host body (20);

the anti-disassembly device is characterized in that an anti-disassembly hole (15) is formed in the surface of the base (10) and/or the host body (20), the section size of the anti-disassembly hole (15) is smaller than or equal to a preset value, the anti-disassembly hole (15) and the anti-disassembly portion (16) are arranged oppositely, the anti-disassembly hole (15) is used for enabling a disassembly tool to stretch into the anti-disassembly hole, and the anti-disassembly portion (16) can elastically deform to break away from the limit of the limiting groove (25).

2. The tamper structure according to claim 1, wherein the base (10) comprises a base body (11) and an elastic connecting portion (17), an end portion of one end of the elastic connecting portion (17) far away from the base body (11) is connected with the tamper portion (16), and the elastic connecting portion (17) provides elastic force for elastic deformation of the tamper portion (16).

3. The tamper structure according to claim 2, wherein the tamper portion (16) includes a retaining protrusion (161) protruding toward the limiting groove (25), and the retaining protrusion (161) is connected to the elastic connecting portion (17) and can be engaged with an inner wall of the limiting groove (25).

4. The structure according to claim 3, characterized in that the anti-detachment protrusion (161) is provided with a first inclined surface (1611), the first inclined surface (1611) faces the base body (11) and forms an obtuse angle with the elastic connection portion (17).

5. The tamper structure according to claim 2, characterized in that the tamper portion (16) comprises an actuation ramp (162), the actuation ramp (162) is connected to a side of the elastic connecting portion (17) facing away from the base body (11) and is disposed opposite to the tamper hole (15), and an included angle between the actuation ramp (162) and the elastic connecting portion (17) is an obtuse angle.

6. The tamper structure according to claim 5, wherein a side of the actuation ramp (162) facing away from the main body (20) is provided with a limit protrusion (163), and the limit protrusion (163) is used for limiting a moving distance of the elastic connection portion (17).

7. The tamper structure according to claim 1, wherein the bottom surface of the main body (20) is recessed inward to form a receiving groove (21), and the receiving groove (21) is used for receiving the base (10);

the side wall of the accommodating groove (21) comprises a first inner wall (211), the first inner wall (211) is provided with a plurality of first bulges (22), the surface of the base (10) is inwards sunken to form a plurality of blind holes (12) matched with the first bulges (22), and the first bulges (22) are inserted into the blind holes (12).

8. The tamper structure according to claim 7, wherein a side of the first protrusion (22) facing the base (10) extends toward a side wall of the receiving groove (21) to form a second protrusion (23), a guide groove (13) communicated with the blind hole (12) is formed in a surface of the blind hole (12) facing the host body (20), the second protrusion (23) and the first protrusion (22) are inserted into the blind hole (12), and a side of the first protrusion (22) facing the base (10) abuts against the guide groove (13).

9. The tamper structure according to claim 7, wherein the sidewall of the accommodating groove (21) further comprises a second inner wall (212), the second inner wall (212) is disposed at an included angle with respect to the first inner wall (211), the second inner wall (212) is disposed with a plurality of positioning grooves (24), the base (10) is disposed with a plurality of positioning protrusions (14) matching with the positioning grooves (24), and the positioning protrusions (14) can extend into and abut against the positioning grooves (24).

10. A fire alarm device, characterized in that it comprises a tamper-evident structure (100) according to any one of claims 1-9.