CN218729282U

CN218729282U - Smoke alarm and base thereof

Info

Publication number: CN218729282U
Application number: CN202222404724.5U
Authority: CN
Inventors: 叶龙; 马涛; 姜红梅; 田涵朴; 张森文
Original assignee: Super Wisdom Shanghai Internet Of Things Technology Co ltd; Henan Zilian Internet Of Things Technology Co ltd
Current assignee: Super Wisdom Shanghai Internet Of Things Technology Co ltd; Henan Zilian Internet Of Things Technology Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-03-24
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to a smoke alarm and a base thereof, the base comprises a base body, a battery compartment for installing a battery is arranged on the base body, an elastic arm is also arranged on the base body, the elastic arm is provided with a top pressing part and a blocking part, the top pressing part is used for being pressed by the battery when the battery is installed in the battery compartment so as to lead the elastic arm to deform outwards, the blocking part is provided with a blocking position which is protruded out of the base body when the battery is not installed in the battery compartment, and the blocking part is also provided with an assembling position which is inwards retracted in the base body along with the outward deformation of the elastic arm when the battery is installed in the battery compartment; still be provided with the elastic component on the base body, the elastic component has the contact site with the lateral surface roof pressure contact of bullet arm, and the elastic component is used for being bounced the arm extrusion deformation when the bullet arm outwards warp, provides the power that resets for the restoration of bullet arm. The utility model discloses effectively solved among the prior art because of the outside unable restoration after warping of vaulted column, and still can assemble the problem of mount pad and lower cover when leading to not installing the battery in the battery tray.

Description

Smoke alarm and base thereof

Technical Field

The utility model relates to a smoke alarm and base thereof belongs to smoke alarm technical field.

Background

A smoke alarm, which is a device for detecting smoke to find a fire, is used to monitor whether a fire occurs in an environment and to issue an alarm, and is currently installed in many industrial plants and office buildings. In the prior art, a battery serving as a power supply of the smoke alarm is installed in the smoke alarm, but the smoke alarm is usually installed on a fixed object such as a ceiling under the condition that the battery is not installed at present, so that the smoke alarm cannot give an alarm normally when a fire occurs.

In order to solve the above problems, the chinese patent application with application publication No. CN105608830a discloses a smoke alarm with a novel structure, which includes a lower cover (i.e., a base) and a mounting base (i.e., a hanging plate) for fixedly mounting the lower cover, wherein a battery holder (i.e., a battery compartment) for mounting a battery is arranged on the lower cover, an arched column is fixedly arranged on the back of the battery holder, the arched column includes a raised column, a claw, a connecting sheet connected between the raised column and the claw, and an insert sheet arranged on the connecting sheet and used for being inserted into the battery holder and being abutted against by the battery, and the claw is used for being inserted into a through hole on the lower cover to fixedly connect the arched column and the lower cover.

When the battery seat is used, the mounting seat is fixedly mounted on a fixed object, and when a battery is not mounted in the battery seat, the raised column extends out of the plane of the lower cover, so that the raised column is blocked by a blocking piece on the mounting seat when the lower cover is mounted, and the lower cover cannot be mounted on the mounting seat; when a battery is installed in the battery seat, the insertion piece is abutted by the battery, so that the arched column deforms outwards, the protruding column moves to be lower than or flush with the plane of the lower cover, the protruding column cannot be in stop fit with the blocking piece on the installation seat, and the installation of the lower cover on the installation seat can be realized.

However, there is a problem that, since the smoke alarm requires frequent disassembly and assembly of the battery during debugging and testing after manufacturing, and also requires frequent disassembly and assembly of the battery during daily inspection and maintenance, for the arched column of the smoke alarm in the above patent document, the elastic deformation capability of the arched column is easily weakened during frequent disassembly and assembly of the battery, and the arched column may not be restored to the original position after being pushed against the battery to deform, and if the arched column is not restored to the original position, even if the battery is not installed in the battery holder, the lower cover can still be installed on the mounting holder, so that the problem that the smoke alarm cannot alarm when a fire occurs still cannot be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a base of a smoke alarm, which solves the problem that the installation seat and the lower cover can still be assembled when the battery is not installed in the battery seat because the arched column can not be reset after being deformed outwards in the prior art; an object of the utility model is to provide a smoke alarm to solve above-mentioned problem.

In order to achieve the above object, the utility model discloses well smoke alarm's base adopts following technical scheme:

a base of a smoke alarm comprises a base body, wherein a battery bin for mounting a battery is arranged on the base body, an elastic arm is further arranged on the base body and provided with a jacking portion and a stopping portion, the jacking portion is used for being jacked by the battery when the battery is mounted in the battery bin so as to enable the elastic arm to deform outwards, the stopping portion is provided with a stopping position protruding out of the base body when the battery is not mounted in the battery bin, and the stopping portion is also provided with an assembling position which is inwards retracted in the base body along with the outward deformation of the elastic arm when the battery is mounted in the battery bin; still be provided with the elastic component on the base body, the elastic component has the contact site with the lateral surface roof pressure contact of bullet arm, and the elastic component is used for being bounced arm extrusion deformation when the arm outwards warp to play the arm, provides the power that resets for the reseing of arm.

The beneficial effects of the above technical scheme are that: in the base of the smoke alarm of the utility model, because the jacking part of the elastic arm arranged on the base body can be jacked by the battery when the battery is installed in the battery compartment, the elastic arm can be deformed outwards by jacking the battery opposite to the jacking part, and because the stopping part of the elastic arm has a stopping position which protrudes out of the base body when the battery is not installed in the battery compartment, and also has an assembling position which is inward retracted to the base body along with the outward deformation of the elastic arm when the battery is installed in the battery compartment, when the stopping part is positioned at the stopping position, the assembly of the base can be blocked by protruding out of the base body, thereby avoiding the occurrence of the condition that the battery is not installed in the battery compartment after the installation of the base; when the stopping part is positioned in the assembling position, the stopping part is internally accommodated in the base body, so that the base can be assembled, and the normal use of the smoke alarm can be further ensured; therefore, in order to avoid the situation that the battery is not installed in the battery compartment after the base is installed, the stopping part needs to be located at the stopping position before the battery is installed, and because the elastic part with the contact part in abutting contact with the outer side surface of the elastic arm is arranged on the base body, and the elastic part can be extruded and deformed by the elastic arm when the elastic arm deforms outwards, compared with the prior art, even if the elastic deformation capacity of the elastic arm is weakened, the extruded elastic part can also provide reset power for resetting the elastic arm, the stopping part on the elastic arm can be pushed and reset to the stopping position from the assembling position under the action of the self elastic force, so that preparation is made for verifying whether the battery is installed in the battery compartment or not when the base is assembled next time, and the situation that the smoke alarm cannot normally alarm due to the fact that the battery is not installed after the base is installed can be avoided.

Furthermore, the elastic part comprises an installation section and a jacking section which are arranged in a V shape, the contact part is arranged on the jacking section, and an installation groove for the installation section to be inserted is formed in the base body.

The beneficial effects of the above technical scheme are that: the elastic piece is arranged into the mounting section and the jacking section which are arranged in a V shape, so that the elastic arm can be conveniently fixed on the base body through the insertion of the mounting section and the mounting groove, and meanwhile, jacking contact between the elastic piece and the elastic arm and extrusion deformation of the elastic piece can be ensured through the jacking section provided with the contact part.

Furthermore, the mounting section is provided with a spring claw for clamping the mounting section in the mounting groove.

The beneficial effects of the above technical scheme are that: through the joint cooperation between bullet claw and the mounting groove, can further strengthen the stability of installation section installation in the mounting groove, and then also can further strengthen the stability of elastic component installation on base body.

Further, the perpendicular to groove depth extending direction's of mounting groove cross-section is the type of protruding, and the mounting groove includes big rectangular channel and the little rectangular channel that communicates with big rectangular channel, and the installation section is used for inserting to install in big rectangular channel, and the tip of playing the claw is used for cooperating with the lateral wall roof pressure of little rectangular channel.

The beneficial effects of the above technical scheme are that: through big rectangular channel and little rectangular channel, can realize the installation section and play the installation of claw in the mounting groove and play the roof pressure cooperation of claw and mounting groove, also can reduce the occupation space of mounting groove to a certain extent simultaneously, make things convenient for the setting of mounting groove on base body.

Further, the elastic claw is integrally formed on the mounting section.

The beneficial effects of the above technical scheme are that: the joint strength between bullet claw and the installation section has been strengthened, and then the stability of installation section through the joint installation of bullet claw in the mounting groove has also been strengthened.

Furthermore, the side wall of the mounting groove is provided with a notch which is arranged corresponding to the clamping jaw and penetrates through the side wall.

The beneficial effects of the above technical scheme are that: when dismantling the elastic component of installing on base body through the mounting groove, can pass through opening roof pressure installation section to make the bullet claw warp towards the installation section, reduce the resistance between installation section and the mounting groove, easy to assemble section is torn open out in the mounting groove.

Furthermore, the jacking section comprises a jacking section body and a bending section, the bending section is connected with the jacking section body and is arranged towards the mounting section in a bending mode, and the transition connecting portion between the bending section and the jacking section body forms the contact portion.

The beneficial effects of the above technical scheme are that: the transition connecting part between the bending section and the jacking section body is used as a contact part, so that the friction force between the jacking section and the elastic arm in jacking contact can be reduced, the abrasion of the elastic arm can be reduced, and the service life of the elastic arm can be prolonged.

Further, the elastic member is sheet-shaped.

The beneficial effects of the above technical scheme are that: not only can strengthen the elastic strength of elastic component, but also can increase the area of contact between elastic component and the bullet arm, be favorable to reducing the friction damage when bullet arm and elastic component contact.

Further, the elastic piece is integrally bent and formed.

The beneficial effects of the above technical scheme are that: not only is the processing and the manufacturing of the elastic piece convenient, but also the integral structural strength of the elastic piece can be ensured.

In order to achieve the above object, the utility model provides a smoke alarm adopts following technical scheme:

a smoke alarm comprises a hanging plate and a base arranged on the hanging plate, wherein the base comprises a base body, a battery bin for mounting a battery is arranged on the base body, an elastic arm is further arranged on the base body and provided with a pressing part and a stopping part, the pressing part is used for being pressed by the battery when the battery is mounted in the battery bin so as to enable the elastic arm to deform outwards, the stopping part is provided with a stopping position which is protruded out of the base body when the battery is not mounted in the battery bin, and the stopping part is also provided with an assembling position which is inwards retracted in the base body along with the outward deformation of the elastic arm when the battery is mounted in the battery bin; still be provided with the elastic component on the base body, the elastic component has the contact site with the lateral surface roof pressure contact of bullet arm, and the elastic component is used for being bounced arm extrusion deformation when the arm outwards warp to play the arm, provides the power that resets for the reseing of arm.

The beneficial effects of the above technical scheme are that: in the smoke alarm of the utility model, because the top pressure part of the elastic arm arranged on the base body can be pressed by the battery when the battery is installed in the battery compartment, the elastic arm can be deformed outwards by the top pressure of the battery opposite top pressure part, and the stop part of the elastic arm has a stop position which is protruded out of the base body when the battery is not installed in the battery compartment, and also has an assembly position which is retracted in the base body along with the outward deformation of the elastic arm when the battery is installed in the battery compartment, thus when the stop position is located, the assembly of the base can be blocked by the base body through protruding outwards, and the situation that the battery is not installed in the battery compartment after the installation of the base is avoided; when the blocking part is positioned at the assembling position, the blocking part is internally accommodated in the base body, so that the assembly of the base can be realized, and the normal use of the smoke alarm can be further ensured; therefore, in order to avoid the situation that the battery is not installed in the battery compartment after the base is installed, the stopping part needs to be located at the stopping position before the battery is installed, and because the elastic part with the contact part in abutting contact with the outer side surface of the elastic arm is arranged on the base body, and the elastic part can be extruded and deformed by the elastic arm when the elastic arm deforms outwards, compared with the prior art, even if the elastic deformation capacity of the elastic arm is weakened, the extruded elastic part can also provide reset power for resetting the elastic arm, the stopping part on the elastic arm can be pushed and reset to the stopping position from the assembling position under the action of self elastic force, so as to prepare for verifying whether the battery is installed in the battery compartment when the base is assembled next time, and the situation that the smoke alarm cannot give a normal alarm due to the fact that the battery is not installed after the base is installed can be avoided.

The beneficial effects of the above technical scheme are that: the elastic piece is arranged into the mounting section and the jacking section which are arranged in a V shape, so that the elastic arm can be conveniently fixed on the base body through the insertion of the mounting section and the mounting groove, and meanwhile, the jacking contact between the elastic piece and the elastic arm and the extrusion deformation of the elastic piece can be ensured through the jacking section provided with the contact part.

The beneficial effects of the above technical scheme are that: through the joint cooperation between bullet claw and the mounting groove, can further strengthen the degree of stability of installation section installation in the mounting groove, and then also can further strengthen the degree of stability of elastic component installation on base body.

The beneficial effects of the above technical scheme are that: through big rectangular channel and little rectangular channel, can realize the installation section and play the installation of claw in the mounting groove and play the roof pressure cooperation of claw and mounting groove, also can reduce the occupation space of mounting groove to a certain extent simultaneously, made things convenient for the setting of mounting groove on base body.

Further, the elastic claw is integrally formed on the mounting section.

The beneficial effects of the above technical scheme are that: the joint strength between the elastic claw and the installation section is enhanced, and the stability of the installation section in clamping installation through the elastic claw in the installation groove is further enhanced.

The beneficial effects of the above technical scheme are that: when dismantling the elastic component of installing on base body through the mounting groove, can pass through opening roof pressure installation section to make the bullet claw warp towards the installation section, reduce the resistance between installation section and the mounting groove, easy to assemble section is torn open from the mounting groove.

Further, the elastic member is sheet-shaped.

Further, the elastic piece is integrally formed in a bending mode.

Drawings

Fig. 1 is a schematic view of a blocking portion of the smoke alarm of the present invention in a blocking position;

figure 2 is a schematic view of the blocking portion of the smoke alarm of the present invention in an assembly position;

fig. 3 is a perspective view of the spring plate in the smoke alarm of the present invention;

figure 4 is a perspective view of the mounting slot in the smoke alarm of the present invention;

figure 5 is a top view of the mounting slot in the smoke alarm of the present invention;

fig. 6 is a corresponding relation diagram of the opening and the elastic claw in the smoke alarm of the utility model.

In the figure: 10. a base body; 11. a battery compartment; 12. mounting grooves; 13. a large rectangular groove; 14. a small rectangular groove; 15. opening the gap; 20. hanging plates; 21. a boss; 30. a spring arm; 31. a jacking portion; 32. a stopper portion; 40. a spring plate; 41. the top pressing section body; 42. bending sections; 43. an installation section; 44. u-shaped slotting; 45. a spring claw; 46. a contact portion; 50. a battery.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that, in the embodiments of the present invention, relational terms such as "first" and "second", and the like, which may be present in the embodiments, are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that "comprises a … …," or the like, may occur does not preclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the elements.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model discloses embodiment 1 of well smoke alarm:

the smoke alarm comprises a hanging plate 20 and a smoke alarm main body fixedly installed on the hanging plate 20, the smoke alarm main body comprises a base, and the smoke alarm main body and the hanging plate 20 can be fixedly installed through the fixed installation between the base and the hanging plate 20. In addition, it should be noted that the rest of the smoke alarm main body is the same as the smoke alarm with a novel structure disclosed in the chinese patent application with publication number CN105608830a, and will not be elaborated herein.

As shown in fig. 1 and 2, the base includes a base body 10 for being fixedly mounted on the hanging plate 20, a battery compartment 11 for mounting the battery 50 is provided on the base body 10, an elastic arm 30 is further provided on the base body 10, the elastic arm 30 has a pressing portion 31 and a stopping portion 32, wherein the pressing portion 31 is formed by a protrusion protruding from an inner side surface of the elastic arm 30, and when the battery 50 is mounted in the battery compartment 11, the pressing portion 31 is pressed by the battery 50 and can deform the elastic arm 30 outwards.

As shown in fig. 1 and fig. 2, the stopping portion 32 is formed by an end portion of the elastic arm 30 capable of penetrating into and out of the base body 10, and the stopping portion 32 has a stopping position and an assembling position. As shown in fig. 1, when the battery 50 is not installed in the battery compartment 11, the stopping portion 32 is at the stopping position, at this time, the stopping portion 32 protrudes out of the base body 10, and since the hanging plate 20 is provided with the boss 21 in stopping fit with the stopping portion 32, in this case, when the base body 10 is installed on the hanging plate 20 by transversely translating the base body 10, the stopping portion 32 is in stopping fit with the boss 21, so as to prevent the base body 10 from being installed on the hanging plate 20, and thus, the situation that the smoke alarm cannot normally alarm when a fire occurs due to the fact that the battery 50 is not installed in the battery compartment 11 can be avoided. As shown in fig. 2, when the battery 50 is installed in the battery compartment 11, the stopping portion 32 is in the assembling position, at this time, since the elastic arm 30 is deformed outward due to the pressing of the battery 50 against the pressing portion 31, the stopping portion 32 is retracted into the base body 10 due to the outward deformation of the elastic arm 30 and does not protrude out of the base body 10, at this time, when the base body 10 is assembled onto the hanging plate 20, the stopping portion 32 is not in stopping fit with the boss 21, so that the base body 10 can be installed on the hanging plate 20, and since the battery 50 is installed in the battery compartment 11, the smoke alarm can also alarm normally in case of fire, thereby ensuring the normal use of the smoke alarm.

Because the smoke alarm not only needs frequent disassembly and assembly of the battery 50 when debugging and testing are carried out after the smoke alarm is manufactured, but also needs frequent disassembly and assembly of the battery 50 in daily maintenance, the elastic arm 30 is easy to weaken the elastic deformation capability in the process of frequently disassembling and assembling the battery 50, and further the elastic arm 30 can not be restored to the original position after being pushed against the battery 50 to deform, if the elastic arm 30 is not restored to the original position, even if the battery 50 is not installed in the battery compartment 11, the base body 10 can still be installed on the hanging plate 20, and therefore the situation that the smoke alarm cannot give an alarm when a fire disaster happens still exists.

In order to ensure that the elastic arm 30 can be restored after being deformed, as shown in fig. 1 and fig. 2, an elastic member is further disposed on the base body 10, in this embodiment, as shown in fig. 3, the elastic member is a sheet-shaped elastic sheet 40 integrally formed, and the elastic sheet 40 includes a mounting section 43 and a pressing section arranged in a V shape. The pressing section comprises a pressing section body 41 and a bending section 42, the bending section 42 is connected with the pressing section body 41 and is bent towards the installation section 43, and a transition connection portion between the bending section 42 and the pressing section body 41 forms a contact portion 46 of the elastic sheet 40, which is used for being in pressing contact with the outer side face of the elastic arm 30. The mounting section 43 is provided with a U-shaped slit 44, and a part of the material of the mounting section 43 located inside the U-shaped slit 44 is bent outwards integrally to form a spring claw 45 (shown in fig. 3).

As shown in fig. 1, 2, 4 and 5, the base body 10 is further provided with a mounting groove 12 into which the mounting section 43 and the resilient claw 45 are inserted, a cross section of the mounting groove 12 perpendicular to the groove depth extending direction is convex, and the mounting groove 12 includes a large rectangular groove 13 and a small rectangular groove 14 communicating with the large rectangular groove 13. Wherein, the installation section 43 is used for inserting and installing in big rectangular channel 13, and the tip of bullet claw 45 is used for cooperating with the lateral wall roof pressure of little rectangular channel 14, and just through the roof pressure cooperation of bullet claw 45 with little rectangular channel 14 lateral wall, can realize the joint installation of installation section 43 in mounting groove 12, is favorable to strengthening the stable installation intensity of installation section 43 in mounting groove 12.

As shown in fig. 2, when the elastic arm 30 deforms outward, since the contact portion 46 of the elastic sheet 40 is in pressing contact with the elastic arm 30, the elastic arm 30 deformed outward presses the pressing section of the elastic arm 30, and the pressing section of the elastic arm 30 deforms toward the mounting section 43, and the pressed and deformed elastic sheet 40 provides a restoring power for restoring the elastic arm 30 after the battery 50 in the battery compartment 11 is detached, so that the stop portion 32 of the elastic arm 30 is restored from the assembly position to the stop position, and the elastic arm 30 is guaranteed to be normally restored.

In addition, as shown in fig. 6, the slot side wall of the large rectangular slot 13 is provided with a notch 15 which is arranged corresponding to the claw and penetrates through the slot side wall, so that when the elastic piece which is installed on the base body 10 through the installation slot 12 is disassembled, the installation section 43 can be pressed through the notch 15, the elastic claw 45 is deformed towards the installation section 43, the resistance between the installation section 43 and the installation slot 12 is reduced, and the installation section 43 is convenient to be disassembled from the installation slot 12.

The utility model provides a smoke alarm, because be provided with the elastic component that has the contact site with the lateral surface roof pressure contact of bullet arm on the base body, and because the elastic component can be by bullet arm extrusion deformation when the bullet arm outwards warp, consequently compare with prior art, even the elastic deformation ability of bullet arm weakens, the elastic component that is extruded also can provide reset power for the reseing of bullet arm, can push away from assembly position the stop portion on the bullet arm and reset to stop position under the effect of self elasticity, whether prepare for installing the battery in the verification battery compartment when assembling the base next time, consequently can avoid the unable normal condition of reporting to the police of smoke alarm to take place because of not installing the battery after the pedestal mounting accomplishes.

In other embodiments of the smoke alarm, the spring may not be integrally formed by bending, but may be formed by welding.

In other embodiments of the smoke alarm, the resilient member may not be in the form of a sheet but rather in the form of a rod, i.e. the resilient member is a resilient rod.

In other embodiments of the smoke alarm, the pressing section comprises only the pressing section body, and the contact portion is formed by an end portion of the pressing section body arranged away from the mounting section.

In other embodiments of the smoke alarm, the side wall of the mounting groove is not provided with a notch, and under the condition, the mounting section can be pressed against the outside of the mounting groove in the direction of the elastic claw, so that the elastic claw deforms, and the mounting section is conveniently detached from the mounting groove.

In other embodiments of the smoke alarm, the catch may not be integrally formed on the mounting section, but rather welded to the mounting section.

In other embodiments of the smoke alarm, the elastic claw may not be in press fit with the side wall of the mounting groove, but a step is provided on the side wall of the mounting groove, and when the mounting section is inserted in place in the mounting groove, the elastic claw is in stop fit with the step, thereby realizing the clamping and mounting of the mounting section in the mounting groove.

In other embodiments of the smoke alarm, the cross-section of the mounting groove perpendicular to the direction of extension of the groove depth may not be convex, but rectangular, i.e. the mounting groove comprises only one rectangular groove.

In other embodiments of the smoke alarm, the elastic claw is arranged on the installation section and has the same structure as the claw on the arched column in the smoke alarm with the novel structure disclosed in the chinese patent application with the application publication number of CN105608830a, and a step in clamping fit with the elastic claw is arranged in the installation groove, so that the clamping fit of the installation section in the installation groove is realized through the clamping fit of the elastic claw and the step.

In other embodiments of the smoke alarm, the mounting section may not be provided with a resilient catch, in which case the mounting of the mounting section in the mounting slot is achieved by inserting the mounting section into the mounting slot.

In other embodiments of the smoke alarm, the elastic element may not include the mounting section and the pressing section arranged in a V shape, but only include an arc-shaped section, one end of the arc-shaped section is inserted and fixed in the mounting groove, and the other end is used for press-fitting with the elastic arm.

The utility model discloses the embodiment of well smoke alarm's base: the specific structure of the base of the smoke alarm is identical to that of the above-described embodiments of the smoke alarm and will not be repeated here.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The base of the smoke alarm is characterized by comprising a base body (10), wherein a battery bin (11) for mounting a battery (50) is arranged on the base body (10), an elastic arm (30) is further arranged on the base body (10), the elastic arm (30) is provided with a jacking portion (31) and a stopping portion (32), the jacking portion (31) is used for being jacked by the battery (50) when the battery (50) is mounted in the battery bin (11) so that the elastic arm (30) deforms outwards, the stopping portion (32) is provided with a stopping position protruding out of the base body (10) when the battery (50) is not mounted in the battery bin (11), and the stopping position is also provided with an assembling position which is outwards deformed along with the elastic arm (30) and is inwards retracted in the base body (10) when the battery (50) is mounted in the battery bin (11); the base body (10) is further provided with an elastic piece, the elastic piece is provided with a contact part (46) which is in pressing contact with the outer side face of the elastic arm (30), and the elastic piece is used for being extruded and deformed by the elastic arm (30) when the elastic arm (30) deforms outwards so as to provide reset power for resetting of the elastic arm (30).

2. Base for a smoke alarm according to claim 1, characterised in that the elastic element comprises a mounting section (43) and a pressing section arranged in a V-shape, the contact portion (46) being provided on the pressing section, the base body (10) being provided with a mounting groove (12) for insertion of the mounting section (43).

3. Base of a smoke alarm according to claim 2, characterised in that the mounting section (43) is provided with a snap catch (45) for snapping the mounting section (43) into the mounting groove (12).

4. A smoke alarm base according to claim 3, wherein the section of the mounting groove (12) perpendicular to the extension direction of the groove depth is convex, the mounting groove (12) comprises a large rectangular groove (13) and a small rectangular groove (14) communicated with the large rectangular groove (13), the mounting section (43) is used for being inserted and mounted in the large rectangular groove (13), and the end part of the elastic claw (45) is used for being pressed and matched with the side wall of the small rectangular groove (14).

5. Base of a smoke alarm according to claim 3 or 4, characterised in that the catch (45) is integrally formed on the mounting section (43).

6. A base for a smoke alarm according to claim 3 or 4 characterised in that the side walls of the mounting groove (12) are provided with notches (15) corresponding to the claws and extending through said side walls.

7. The base of a smoke alarm according to any one of claims 2 to 4, characterised in that the press section comprises a press section body (41) and a bending section (42), the bending section (42) is connected with the press section body (41) and is arranged in a bending way towards the mounting section (43), and the transition connection part between the bending section (42) and the press section body (41) forms the contact part (46).

8. A base for a smoke alarm according to any one of claims 1 to 4 wherein the resilient member is in the form of a sheet.

9. The base of the smoke alarm of claim 8, wherein the resilient member is integrally formed as a bent piece.

10. A smoke alarm characterised by comprising a peg (20) and a base mounted on the peg (20), the base being the same as the base of the smoke alarm of any one of claims 1 to 9.