CN219142578U - Alarm with obstacle detection function - Google Patents

Abstract

The application relates to the technical field of alarms, in particular to an alarm with an obstacle detection function, which comprises a mounting seat, an obstacle sensor, a cover shell and an alarm sensor. The obstacle sensor is mounted on the mounting base. An air flow channel is formed between the cover shell and the mounting seat, and the air flow channel is arranged in the detection area of the obstacle sensor. The alarm sensor is installed in the cover shell, and the alarm sensor is arranged in the detection area of the obstacle sensor. Wherein the air flow channel provides a channel for substances triggering the alarm sensor to reach the alarm sensor. Therefore, the obstacle sensor and the alarm sensor are respectively arranged on the mounting seat and the cover shell, the alarm sensor and the air flow channel are arranged in the detection area of the obstacle sensor, the blind area of the obstacle sensor for detecting the environmental obstacle where the alarm sensor is positioned is eliminated, the obstacle sensor can comprehensively monitor the obstacle where the alarm sensor is positioned, and the working reliability of the alarm is improved.

Description

Alarm with obstacle detection function

Technical Field

The application relates to the technical field of alarms, in particular to an alarm with obstacle detection function.

Background

The alarm realizes fire prevention by monitoring the concentration of smoke, and an ionic smoke sensor or a photoelectric sensor is adopted in the alarm. The sensor of the ion alarm has radioactive substances which can generate current, and when smoke particles in smoke enter the sensor, the current can be disturbed, so that the alarm sounds an alarm. The photoelectric alarm can emit infrared light beams, when smoke particles exist in a room, the light beams are scattered onto the sensor, and the sensor senses certain light beams and then emits alarm sounds.

According to the working principle of the alarm, one of the conditions that the alarm can reliably carry out smoke alarm is that smoke particles can smoothly reach the alarm sensor without obstruction, so that the alarm sensor can effectively monitor the smoke concentration of the environment.

However, due to factors such as accumulation of sundries near the alarm sensor, blockage of an airflow channel of the alarm caused by small organisms such as mosquitoes and the like, airflow is prevented from entering the alarm, so that the alarm sensor in the alarm cannot accurately or rapidly detect the smoke concentration in the environment.

It is therefore necessary to detect the presence of an obstacle in the vicinity of the alarm and in the airflow path of the alarm, which impedes the flow of air into the alarm.

In the prior art, the alarm sensor and the sensor for detecting the obstacle are arranged in the same mounting structure, so that the sensor for detecting the obstacle can have a blind area when monitoring the obstacle of the environment where the alarm sensor is located, and further whether the environment where the alarm sensor is located has the obstacle or not can not be judged comprehensively, and a large potential safety hazard is left for the reliable work of the alarm sensor.

Therefore, how to eliminate the detection blind area of the environment where the obstacle sensor is located by the alarm sensor, and further comprehensively monitor the obstacle of the environment where the alarm sensor is located is a technical problem to be solved by the application.

Disclosure of Invention

The application provides an alarm with barrier detection function aims at solving among the prior art how to eliminate the detection blind area of barrier sensor to the environment that alarm sensor is located, and then monitors the technical problem of barrier of the environment that alarm sensor is located comprehensively.

The application provides an alarm with barrier detection function, include:

a mounting base;

the obstacle sensor is arranged on the mounting seat;

a cover housing; and

an alarm sensor provided at the cover housing;

an airflow channel for the detected object to reach the alarm sensor is formed between the cover shell and the mounting seat;

the airflow channel and the alarm sensor are both arranged in the detection area of the obstacle sensor.

Further, a reflector is arranged on one side of the cover shell, which is close to the mounting seat, and the reflector is cone-shaped;

the tip of the reflector is oriented toward the obstacle sensor and aligned with the center of the obstacle sensor.

Still further, the obstacle sensor is an ultrasonic sensor.

Still further, the cover housing is provided with at least one supporting leg, and the cover housing is detachably mounted to the mounting base through the supporting leg.

Furthermore, an insert is arranged at the end part of the supporting leg, a limiting hole is formed in the insert, an inserting hole is formed in the mounting seat, and a limiting piece is arranged in the mounting seat;

the plug-in is matched with the jack, and the limiting piece is matched with the limiting hole;

after the plug-in is inserted into the jack, the limiting piece is inserted into the limiting hole.

Furthermore, the number of the supporting feet is four, the corresponding position of each supporting foot is provided with an insert, and the positions and the number of the inserting holes are matched with those of the supporting feet.

Still further, the tip of locating part is provided with wedge inclined plane, the plug-in components contact behind the locating part pass through the wedge inclined plane promotes the locating part, the locating part passes through the spring with the plug-in components butt.

Further, the cover shell is provided with a first port, the mounting seat is provided with a second port, and the first port is matched with the second port;

the circuit in the cover shell is electrically connected with the circuit in the mounting seat through the first port and the second port.

Still further, the cover housing is provided with at least one supporting leg, the first port is disposed at the supporting leg, and the position of the second port corresponds to the position of the first port.

Further, an inclined surface pointing from the edge to the center is arranged on one side of the cover housing close to the air flow channel, the inclined surface is provided with grids, and grid strips of the grids are sequentially stacked in a direction pointing to the end face of the cover housing.

The beneficial effects achieved by the utility model are as follows:

the application provides an alarm with barrier detection function, including mount pad, barrier sensor, lid casing and alarm sensor. The obstacle sensor is mounted on the mounting base. An air flow channel is formed between the cover shell and the mounting seat, and the air flow channel is arranged in the detection area of the obstacle sensor. The alarm sensor is installed in the cover shell, and the alarm sensor is arranged in the detection area of the obstacle sensor. Wherein the air flow channel provides a channel for substances triggering the alarm sensor to reach the alarm sensor. Therefore, the obstacle sensor and the alarm sensor are respectively arranged on the mounting seat and the cover shell, and the alarm sensor and the air flow channel are arranged in the detection area of the obstacle sensor, so that the blind area of the obstacle sensor for detecting the obstacle in the environment where the alarm sensor is positioned is eliminated, the obstacle sensor can comprehensively monitor the obstacle in the environment where the alarm sensor is positioned, and the working reliability of the alarm is improved.

Drawings

Fig. 1 is a schematic perspective view of an alarm with obstacle detection function according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view of an alarm with obstacle detection function provided by an embodiment of the present utility model;

FIG. 3 is a schematic diagram of an exploded structure of an alarm with obstacle detection function according to an embodiment of the present utility model;

fig. 4 is a schematic perspective view of a side view of a cover housing of an alarm with obstacle detection function according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of an end face direction view angle of a cover housing in an alarm with an obstacle detection function according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a mounting seat and a hanging plate in an alarm with obstacle detection function according to an embodiment of the present utility model;

fig. 7 is a schematic perspective view of a hanging plate in an alarm with obstacle detection function according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a part of the internal structure of a mounting seat in an alarm with obstacle detection function according to an embodiment of the present utility model;

fig. 9 is a schematic structural relationship diagram of a limiting member and an insert in an alarm with an obstacle detection function according to an embodiment of the present utility model.

Description of main reference numerals:

10. an alarm;

11. a mounting base; 111. a second port; 112. a first clamping block; 113. a jack; 114. a limiting piece; 115. wedge-shaped inclined planes; 116. a spring; 12. an obstacle sensor; 13. a cover housing; 131. a reflector; 132. supporting feet; 133. a first port; 134. a grille; 135. grid strips; 136. an insert; 137. a limiting hole; 14. an air flow channel; 15. an alarm sensor; 16. a hanging plate; 161. a mounting hole; 162. a scale; 163. a clamping groove; 164. and a second clamping block.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "left," "right," "horizontal," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

In some embodiments of the present application, an alarm 10 with obstacle detection function includes a mounting seat 11, an obstacle sensor 12, a cover housing 13, and an alarm sensor 15. The obstacle sensor 12 is mounted on the mount 11. An air flow passage 14 is formed between the cover housing 13 and the mount 11, the air flow passage 14 being in the detection area of the obstacle sensor 12. The alarm sensor 15 is mounted to the cover housing 13, and the alarm sensor 15 is disposed in the detection area of the obstacle sensor 12. Wherein the air flow channel 14 provides a channel for the substance triggering the alarm sensor 15 to reach the alarm sensor 15. In this way, the obstacle sensor 12 and the alarm sensor 15 are respectively installed on the installation seat 11 and the cover shell 13, so that the alarm sensor 15 and the air flow channel 14 are both arranged in the detection area of the obstacle sensor 12, thereby eliminating the blind area of the obstacle sensor 12 for detecting the environmental obstacle where the alarm sensor 15 is located, enabling the obstacle sensor 12 to comprehensively monitor the obstacle of the environment where the alarm sensor 15 is located, and improving the working reliability of the alarm 10.

Example 1

Referring to fig. 1 to 3, in some embodiments of the present application, an alarm 10 with an obstacle detection function includes a mounting seat 11, an obstacle sensor 12, a cover housing 13, and an alarm sensor 15. The obstacle sensor 12 is mounted on the mount 11. An air flow passage 14 is formed between the cover housing 13 and the mount 11, the air flow passage 14 being in the detection area of the obstacle sensor 12. The alarm sensor 15 is mounted to the cover housing 13, and the alarm sensor 15 is disposed in the detection area of the obstacle sensor 12. Wherein the air flow channel 14 provides a channel for the substance triggering the alarm sensor 15 to reach the alarm sensor 15.

In this way, the obstacle sensor 12 and the alarm sensor 15 are respectively installed on the installation seat 11 and the cover shell 13, so that the alarm sensor 15 and the air flow channel 14 are both arranged in the detection area of the obstacle sensor 12, thereby eliminating the blind area of the obstacle sensor 12 for detecting the environmental obstacle where the alarm sensor 15 is located, enabling the obstacle sensor 12 to comprehensively monitor the obstacle of the environment where the alarm sensor 15 is located, and improving the working reliability of the alarm 10.

It will be appreciated that in the embodiment of the present application, after the alarm 10 is mounted in the operating position, the airflow enters the cover housing 13 through the airflow channel 14 and reaches the alarm sensor 15, and the concentration of smoke particles in the airflow is detected by the alarm sensor 15. During the whole operation of the alarm 10, air flows continuously enter the cover housing 13 through the air flow channel 14 and reach the alarm sensor 15, so that the alarm sensor 15 monitors the concentration of the detection target in the environment where the alarm 10 is located in real time. When the alarm sensor 15 detects that the concentration of the detected target exceeds the alarm value, an audible and visual alarm is triggered, or a wireless signal is transmitted to a remote end to prompt the occurrence of a possible related accident.

When the air flow passage 14 is blocked, the air flow entering the cover housing 13 is blocked, so that the air flow entering the cover housing 13 is reduced or the air flow cannot enter the cover housing 13. In such a case, the concentration of the detection target monitored by the alarm sensor 15 is small, and even the presence of the detection target cannot be monitored. Thereby causing the sensitivity of the alarm 10 to the detection of the detection target object to be reduced, and losing the alarm 10 to alarm in time, and increasing the potential safety hazard of the environment where the alarm 10 is located.

Similarly, when an obstruction is present in the vicinity of the alarm 10, the airflow reaching the alarm 10 may be reduced, or the airflow on the side of the obstruction facing away from the alarm 10 may be prevented from reaching the alarm 10. Thus, the alarm sensor 15 cannot accurately collect the air flow information in the vicinity of the alarm 10, and thus cannot reliably monitor the detection target concentration in the vicinity of the alarm 10.

Referring to fig. 1 to 2, in the embodiment of the present application, an obstacle sensor 12 is mounted to a mounting seat 11, an alarm sensor 15 is mounted to a cover housing 13, and an air flow passage 14 is formed between the cover housing 13 and the mounting seat 11. The obstacle sensor 12 monitors the space area on the cover shell 13 side of the mounting seat 11, so that the air flow channel 14 and the alarm sensor 15 are both in the monitoring range of the obstacle sensor 12, the monitoring blind area of the obstacle sensor 12 is eliminated, and the obstacle sensor 12 can comprehensively monitor the obstacle at the alarm 10.

When an obstacle is present in the vicinity of the airflow path 14 or the alarm 10, it is detected by the obstacle sensor 12. When the obstacle sensor 12 detects an obstacle, the alarm 10 gives an alarm to prompt the existence of the obstacle, so that staff can clear the obstacle in time, and potential safety hazards are eliminated.

Specifically, the alarm 10 may be a smoke alarm, a harmful gas alarm, a thermal alarm, or the like. When the alarm 10 is a smoke alarm, the detection target is smoke; when the alarm 10 is a harmful gas alarm, the detection target is a harmful gas; when the alarm 10 is a thermal alarm, the detection target is a high-temperature airflow.

The obstacle sensor 12 may be a photoelectric sensor or an ultrasonic sensor. The obstacle sensor 12 emits a sensing signal to a space region of the mount 11 near the cover housing 13 side, and when the sensing signal touches an obstacle, the sensing signal is reflected back to the obstacle sensor 12 by the obstacle, so that the obstacle sensor 12 can detect the presence of the obstacle.

In one application scenario of the embodiment of the present application, the alarm 10 is hung on the indoor ceiling, the mount 11 is close to the ceiling, and the cover housing 13 is located on the side of the mount 11 facing away from the ceiling. The obstacle sensor 12 is mounted on the mounting seat 11, the alarm sensor 15 is mounted on the cover housing 13, and an air flow passage 14 is formed between the cover housing 13 and the mounting seat 11.

When an obstruction is present in the airflow path 14, it will form an obstruction to the airflow entering the cover housing 13, impeding interaction between ambient air surrounding the alarm and the airflow path 14, thereby affecting the monitoring of smoke concentration by the alarm sensor 15.

The obstacle sensor 12 emits an induction signal toward the cover housing 13, the induction signal emitted by the obstacle sensor 12 is reflected by the obstacle, the obstacle sensor 12 receives the reflected induction signal, the intensity of the reflected induction signal received by the obstacle sensor 12 is further enhanced, and when the received reflected induction signal is enhanced, the existence of the obstacle in the air flow channel 14 can be determined. The alarm 10 gives an alarm to prompt the existence of an obstacle, so that the worker can clear the obstacle at the air flow channel 14, and the air flow channel 14 is returned to the unblocked state again.

In another application scenario of the embodiment of the present application, the alarm 10 is installed on an indoor wall surface, the installation seat 11 is close to the wall surface, and the cover housing 13 is located on a side facing away from the wall surface. The obstacle sensor 12 is mounted on the mounting seat 11, the alarm sensor 15 is mounted on the cover housing 13, and an air flow passage 14 is formed between the cover housing 13 and the mounting seat 11.

When sundries are accumulated near the alarm 10, the sundries can obstruct the airflow reaching the alarm 10, so that the airflow with smoke cannot smoothly reach the alarm 10, and even the alarm sensor 15 cannot monitor the smoke in the environment where the alarm 10 is located.

The obstacle sensor 12 emits an induction signal to one side deviating from the wall surface, the induction signal emitted by the obstacle sensor 12 is reflected by sundries, the obstacle sensor 12 receives the reflected induction signal, the intensity of the reflected induction signal received by the obstacle sensor 12 is further enhanced, and when the received reflected induction signal is enhanced, the existence of an obstacle near the alarm 10 can be judged. The alarm 10 gives an alarm to prompt the existence of obstacles, so that staff can clean sundries nearby the alarm 10, and further ensure smoothness of air flow nearby the alarm 10.

It should be noted that when mounting the alarm 10, the mount 11 is always located on the side of the mounting surface, i.e. the mount 11 is relatively close to the mounting surface and the cover housing 13 is relatively far from the mounting surface.

The obstacle sensor 12 emits a sensing signal toward the cover housing 13, so that the space area of the side of the mounting seat 11 away from the mounting surface is within the monitoring range of the obstacle sensor 12, that is, the airflow channel 14, the cover housing 13 and the alarm sensor 15 are within the monitoring range of the obstacle sensor 12.

In this way, the airflow channel 14, the cover housing 13 and the alarm sensor 15 are arranged in the monitoring range of the obstacle sensor 12, so that the obstacle sensor 12 can form a monitoring blind area of an obstacle for the alarm sensor 15, the obstacle sensor 12 can comprehensively monitor the obstacle in the environment where the alarm sensor 15 is positioned, and the working reliability of the alarm 10 is improved.

Example two

Referring to fig. 2, in some embodiments of the present application, a reflector 131 is disposed on a side of the cover housing 13 near the mounting seat 11, and the reflector 131 is cone-shaped;

the tip of the reflector 131 faces the obstacle sensor 12 and is aligned with the center of the obstacle sensor 12.

The reflector 131 has a shape in which a side line of a longitudinal section is a straight line or a curved taper.

The signal from the obstacle sensor 12 is diffused by the implementation reflector 131 into the space in which the alarm 10 is located.

In the embodiment of the present application, the sensing signal emitted from the obstacle sensor 12 is reflected by the reflector 131, and is diffused to the space near the alarm 10, and then passes through the air flow channel 14 while being diffused.

In this way, the blind area of the obstacle sensor 12 for detecting the obstacle in the environment where the alarm sensor 15 is located is eliminated, so that the obstacle sensor 12 can comprehensively monitor the obstacle in the environment where the alarm sensor 15 is located, and the reliability of the operation of the alarm 10 is improved.

Specifically, the obstacle sensor 12 emits a sensing signal, which may be a light beam, an ultrasonic wave, or an electromagnetic wave, depending on the type of obstacle sensor 12.

Referring to fig. 1 to 2, it can be understood that in the embodiment of the present application, the obstacle sensor 12 emits a sensing signal, and the sensing signal is reflected by the reflector 131 after reaching the reflector 131. Since the reflector 131 is tapered, the sensing signal is diffused by the reflecting surface of the reflector 131 into the space where the alarm 10 is located. Since the reflector 131 is disposed at a side of the cover housing 13 near the mounting seat 11, when the sensing signal is diffused by the reflector 131, the sensing signal passes through the air flow channel 14 formed between the cover housing 13 and the mounting seat 11 and diffuses toward the vicinity space of the alarm 10.

When the sensing signal is diffused to the space near the alarm 10 through the airflow channel 14, if an obstacle exists near the airflow channel 14 or the alarm 10, the sensing signal is reflected by the obstacle, and a part of the sensing signal reflected by the obstacle is received by the obstacle sensor 12, so that the intensity of the reflected sensing signal received by the obstacle sensor 12 is enhanced, and when the received reflected sensing signal is enhanced, the existence of the obstacle can be monitored.

In this way, it can be determined that an obstacle exists near the alarm 10 or at the air flow channel 14, the alarm 10 gives an alarm to prompt the existence of the obstacle, so that staff can clear the obstacle, further ensure the smoothness of the air flow near the alarm 10 and at the air flow channel 14, and improve the working reliability of the alarm 10.

Example III

Referring to fig. 2, in some embodiments of the present application, the obstacle sensor 12 is an ultrasonic sensor. It will be appreciated that the ultrasonic waves have a strong directivity and travel a relatively long distance in the medium, and when they encounter an obstacle they are reflected by the obstacle and return to the obstacle sensor 12. The obstacle sensor 12 detects the presence of an obstacle by receiving the reflected ultrasonic wave.

Thus, by transmitting and receiving ultrasonic waves, the environment in which the alarm 10 is located and obstructions to the airflow path 14 are monitored. When it is determined that an obstacle exists near the alarm 10 or at the air flow channel 14, the alarm 10 gives an alarm to prompt the existence of the obstacle, so that staff can clear the obstacle, and further the smoothness of the air flow near the alarm 10 and at the air flow channel 14 is ensured.

Specifically, the obstacle sensor 12 includes a transmitter and a receiver, the transmitter of the obstacle sensor 12 transmits ultrasonic waves, the ultrasonic waves are reflected by the obstacle sensor 12 after encountering the obstacle, and then the intensity of the reflected induction signal received by the obstacle sensor 12 is enhanced, and when the received reflected induction signal is enhanced, the existence of the obstacle can be monitored.

In this manner, the environment in which the alarm 10 is located and obstructions of the airflow path 14 are monitored by the obstruction sensor 12.

Example IV

Referring to fig. 1 and fig. 3 to 4, in some embodiments of the present application, the cover housing 13 is provided with at least one supporting leg 132, and the cover housing 13 is detachably mounted to the mounting seat 11 through the supporting leg 132.

It will be appreciated that in the embodiment of the present application, the cover housing 13 is mounted to the mounting base 11 by the support legs 132, and the air flow passage 14 through which the air flow flows is formed between the cover housing 13 and the mounting base 11. When it is detected that an obstacle is present at the air flow channel 14, the alarm 10 gives an alarm of the presence of the obstacle, prompting the staff to go to clear the obstacle. In the process of cleaning the obstacle by the staff, when the staff finds that the obstacle exists in the alarm 10, the cover shell 13 can be detached from the mounting seat 11 so as to clean the obstacle smoothly; when a worker finds an obstacle in the vicinity of the alarm 10, the worker directly clears the obstacle in the vicinity of the alarm.

In this way, when the obstacle at the air flow channel 14 is cleaned, the cover shell 13 is detached, so that the air flow channel 14 forms an open space, and the obstacle cleaning process is more convenient, quick and effective.

In one embodiment of the present application, specifically, when the cover housing 13 is provided with one supporting leg 132, the supporting leg 132 is disposed at an edge of the cover housing 13, and a clamping structure is formed at an end of the supporting leg 132, and a clamping groove adapted to the clamping structure of the supporting leg 132 is also disposed at a corresponding position of the mounting seat 11. When the cover housing 13 is mounted on the mounting seat 11, the engaging structure of the supporting leg 132 is inserted into the engaging groove of the mounting seat 11, so that the cover housing 13 and the mounting seat 11 are relatively fixed. Through the support of the supporting feet 132, an air flow channel 14 through which air flows is formed between the cover shell 13 and the mounting seat 11, and air flow near the alarm 10 enters the cover shell 13 through the air flow channel 14, so that the air flow is monitored by the alarm sensor 15, and the smoke concentration in the air flow is monitored by the alarm sensor 15.

Since the cover housing 13 is connected to the mounting seat 11 through a supporting leg 132, the portion of the cover housing 13 other than the supporting leg 132 is in a suspended state, and at this time, the space through which the air flow can flow through the air flow channel 14 is large, which is beneficial for smooth flow of the air flow. And because the space between the cover shell 13 and the mounting seat 11 is larger, when the obstacles at the air flow channel 14 are cleaned, the obstacles encountered in the cleaning process are smaller, the cleaning of the obstacles by workers can be effectively facilitated, and the cover shell 13 can be removed from the mounting seat 11 without detaching the cover shell 13 from the mounting seat 11 in the process of cleaning the obstacles under the possible condition.

In one embodiment of the present application, specifically, the cover housing 13 is provided with two or more support legs 132, and the support legs 132 are uniformly arranged at the edge of the cover housing 13. A clamping structure is formed at the end of the supporting leg 132, and a clamping groove adapted to the clamping structure of the supporting leg 132 is also provided at a corresponding position of the mounting seat 11. When the cover housing 13 is mounted on the mounting seat 11, the engaging structure of the supporting leg 132 is inserted into the engaging groove of the mounting seat 11, so that the cover housing 13 and the mounting seat 11 are relatively fixed. Through the support of the supporting feet 132, an air flow channel 14 through which air flows is formed between the cover shell 13 and the mounting seat 11, and air flow near the alarm 10 enters the cover shell 13 through the air flow channel 14, so that the air flow is monitored by the alarm sensor 15, and the smoke concentration in the air flow is monitored by the alarm sensor 15.

The cover shell 13 is supported by the supporting feet 132, so that the cover shell 13 is more firmly connected with the mounting seat 11, and the possibility of relative shaking of the cover shell 13 and the mounting seat 11 can be effectively reduced. The sensing signal emitted by the obstacle sensor 12 is diffused to the space area near the alarm 10 through the reflector 131 at the cover shell 13, so that the cover shell 13 is stably installed at the installation seat 11, and the reliability of obstacle monitoring by the obstacle sensor 12 can be effectively ensured.

Example five

Referring to fig. 8 to 9, an insert 136 is disposed at an end of the supporting leg 132, the insert 136 is provided with a limiting hole 137, the mounting seat 11 is provided with an insertion hole 113, and the mounting seat 11 is provided with a limiting member 114. The insert 136 fits into the receptacle 113 and the stop 114 fits into the stop aperture 137. After the insert 136 is inserted into the receptacle 113, the stop 114 is inserted into the stop hole 137. The number of the supporting feet 132 is four, an insert 136 is arranged at the corresponding position of each supporting foot 132, and the positions and the number of the insertion holes 113 are matched with those of the supporting feet 132. The end of the limiting piece 114 is provided with a wedge-shaped inclined plane 115, the limiting piece 114 is pushed by the wedge-shaped inclined plane 115 after the plug-in 136 contacts the limiting piece 114, and the limiting piece 114 is abutted with the plug-in 136 through a spring 116.

When the cover housing 13 is mounted to the mount 11, the plug 136 is inserted into the insertion hole 113. After the insert 136 contacts the stopper 114, the insert 136 continues to extend into the receptacle 113, at which point the insert 136 pushes the stopper 114 through the wedge-shaped ramp 115 at the end of the stopper 114. The insert 136 continues to extend into the receptacle 113 until the limiting aperture 137 reaches the limiting member 114, during which process the limiting member 114 abuts the insert 136 via the spring 116. When the limiting hole 137 reaches the limiting piece 114, the limiting piece 114 is inserted into the limiting hole 137 under the action of the spring 116.

In this way, the cover housing 13 is stably mounted at the mounting seat 11 by inserting the insert 136 into the insertion hole 113 and inserting the stopper 114 into the stopper hole 137.

The cover housing 13 is connected with the mounting seat 11 through four supporting legs 132, so that the mounting structure is more stable. By the support of the four support legs 132, the air flow channel 14 between the cover housing 13 and the mounting seat 11 is more unobstructed, so that air flow can enter the alarm 10 from all directions, and the alarm 10 can give an alarm more effectively and reliably.

Example six

Referring to fig. 2 to 3, in some embodiments of the present application, the cover housing 13 is provided with a first port 133, the mounting seat 11 is provided with a second port 111, and the first port 133 is adapted to the second port 111;

the circuitry within the cover housing 13 is electrically connected to the circuitry within the mount 11 through the first port 133 and the second port 111.

In this way, the electrical circuitry within the cover housing 13 and the electrical circuitry within the mounting 11 may exchange electrical energy or signals through the connection of the first port 133 and the second port 111.

Specifically, a first circuit board is mounted in the cover housing 13, and the alarm sensor 15, a control circuit of the alarm sensor 15, a smoke alarm circuit, and the like are all disposed on the first circuit board and electrically connected to an external circuit through the first port 133. The second circuit board is mounted in the mounting seat 11, and the obstacle sensor 12, a control circuit of the obstacle sensor 12, an obstacle alarm circuit, and the like are all disposed on the second circuit board and electrically connected to an external circuit through the second port 111.

The power source of the alarm 10 may be an external power source through which power is supplied to the first circuit board and the second circuit board simultaneously or separately.

When the external power supply supplies power to the first circuit board and the second circuit board simultaneously, the external power supply is firstly connected to one of the first circuit board and the second circuit board, and then supplies power to the other of the first circuit board and the second circuit board through one of the first circuit board and the second circuit board. For example, an external power source is first connected to the first circuit board, and then supplies power to the second circuit board through the first circuit board. The first circuit board and the second circuit board are electrically connected through the first port 133 and the second port 111, and after electric energy enters the first circuit board through an external power supply, electric energy enters the second circuit board through the first port 133 and the second port 111.

When the external power supply supplies power to the first circuit board and the second circuit board respectively, the external power supply is connected to the first circuit board and the second circuit board respectively, and the external power supply directly supplies power to the first circuit board and the second circuit board respectively.

Of course, the power source of the alarm 10 may also be an independent power source, that is, at least one of the first circuit board and the second circuit board is provided with an independent power source capable of storing electricity.

When the first circuit board and the second circuit board are respectively provided with the rear independent power supply, the independent power supplies of the first circuit board and the second circuit board respectively supply electric energy to the first circuit board and the second circuit board.

When only one of the first circuit board and the second circuit board is provided with the independent power supply, the circuit board of the first circuit board and the second circuit board provided with the independent power supply supplies electric power to the circuit board of the first circuit board and the second circuit board which is not provided with the independent power supply through the cooperation of the first port 133 and the second port 111. For example, the first circuit board is provided with an independent power source, and the independent power source provides electric power to the first circuit board, and then provides electric power to the second circuit board through the cooperation of the first port 133 and the second port 111.

When information interaction is needed between the first circuit board and the second circuit board, the information interaction can be completed through the cooperation of the first port 133 and the second port 111.

Example seven

Referring to fig. 3 to 4, in some embodiments of the present application, the first port 133 is disposed at the supporting leg 132, and the position of the second port 111 corresponds to the position of the first port 133.

It will be appreciated that the cover housing 13 is connected to the mounting base 11 by the support legs 132, so that the cover housing 13 contacts the mounting base 11 by the support legs 132, and the rest of the cover housing 13 is suspended at the mounting base 11 by the support of the support legs 132. The space where the cover housing 13 forms a suspension at the mounting seat 11 is the air flow channel 14.

Since the cover housing 13 is only in contact with the mounting seat 11 through the supporting leg 132, the first port 133 is disposed at the supporting leg 132, so that the first port 133 can be connected with the second port 111 without additional structure when the cover housing 13 is mounted on the mounting seat 11 through the supporting leg 132.

Example eight

Referring to fig. 2 to 3 and 7, in some embodiments of the present application, a hanging plate 16 is detachably mounted on a side of the mounting seat 11 facing away from the cover housing 13, and the hanging plate 16 is provided with a mounting hole 161.

It will be appreciated that in the embodiments of the present application, when the alarm 10 is installed, the hanging plate 16 is first installed at a designated location, and the combination of the mounting base 11 and the cover housing 13 is installed at the hanging plate 16. When the hanging plate 16 is mounted, holes are drilled at designated positions according to the holes of the mounting holes 161 in the hanging plate 16, then the mounting holes 161 are aligned with the holes drilled at the designated positions, and the hanging plate 16 is fixedly mounted at the designated positions by screws.

In this way, the hanging plate 16 is fixed at the designated position, and then the functional part formed by the assembly of the mounting seat 11 and the cover housing 13 is mounted at the hanging plate 16, and when the alarm 10 needs to be maintained, the functional part of the alarm 10 can be detached from the designated position only by detaching the cover housing 13 from the hanging plate 16, and further the functional part of the alarm 10 is maintained (for example, an obstacle at the air flow channel 14 is cleaned). When maintenance of the alarm 10 is complete, the functions of the alarm 10 are reinstalled back into the corresponding hanger plate 16 without having to re-drill the hole.

Example nine

Referring to fig. 7, in some embodiments of the present application, the mounting holes 161 are kidney-shaped holes, at least one of the mounting holes 161 is provided with a scale 162, and the scale 162 is provided between adjacent mounting holes 161.

It will be appreciated that in the embodiments of the present application, prior to mounting the hanger plate 16 at a designated location, it is necessary to drill holes at the designated location in accordance with the hole locations of the mounting holes 161 of the hanger plate 16. The hole distance between the mounting holes 161 and the size of the openings can be rapidly determined by the graduations 162 at the mounting holes 161 of the hanger plate 16 and between the mounting holes 161.

Thus, the hanging plate 16 can be installed more conveniently, accurately and rapidly.

Specifically, when the number of the mounting holes 161 is one, holes may be drilled corresponding to positions in the mounting holes 161, the pitch of which is determined according to the graduations 162 at the mounting holes 161. At this time, when the hanging plate 16 is mounted, a plurality of screws may be mounted in the same mounting hole 161, and the hanging plate 16 may be mounted stably by the plurality of screws.

On the other hand, when the number of the mounting holes 161 is plural, the pitch of the drilled holes may be determined according to the scale 162 between the mounting holes 161. At this time, the hanging plate 16 is positioned by the plurality of mounting holes 161, and the hanging plate 16 is fixed at a designated position by using a plurality of screws, so that the hanging plate 16 is stably mounted.

Examples ten

Referring to fig. 6 to 7, in some embodiments of the present application, one of the mounting base 11 and the hanging plate 16 is provided with a clamping slot 163, and the other of the mounting base 11 and the hanging plate 16 is provided with a first clamping block 112;

the second clamping block 164 is disposed in the clamping groove 163, and when the mounting seat 11 and the hanging plate 16 are rotated relatively, the first clamping block 112 slides in the clamping groove 163 and finally hooks the second clamping block 164.

In this way, the mounting seat 11 can be quickly and conveniently mounted or dismounted at the hanging plate 16.

In the embodiment of the present application, when the mounting base 11 is mounted on the hanging plate 16, the mounting base 11 is close to the hanging plate 16, and the clamping block 112 extends into the clamping groove 163. The mounting seat 11 is rotated relatively, so that the first clamping block 112 slides in the clamping groove 163 until the clamping block 112 hooks the second clamping block 164 in the clamping groove 163.

Thus, the mounting of the mount 11 is completed.

When the mounting seat 11 needs to be detached from the hanging plate 16, the mounting seat 11 and the hanging plate 16 are rotated relatively in the opposite rotation direction during mounting, so that the first clamping block 112 slides in the clamping groove 163 until the first clamping block 112 is separated from the second clamping block 164 in the clamping groove 163. And the mounting base 11 is separated from the hanging plate 16.

Thus, the disassembly of the mount 11 is completed.

Specifically, in the embodiment of the present application, the card slot 163 is provided in the hanging plate 16 or the mount 11. Taking the example that the clamping groove 163 is disposed in the hanging plate 16, the first clamping block 112 is disposed at a corresponding position of the mounting seat 11. The hanging plate 16 is fixed at a designated position. When the mounting base 11 is to be mounted on the hanging plate 16, the mounting base 11 is close to the hanging plate 16, and the first clamping block 112 is placed in the clamping groove 163. The mounting seat 11 is rotated to enable the first clamping block 112 to slide in the clamping groove 163 until the first clamping block 112 hooks the second clamping block 164 in the clamping groove 163. The first clamping block 112 is limited in the radial direction of the hanging plate 16 through the clamping groove 163, and the clamping block 112 is limited in the axial direction of the hanging plate 16 through the second clamping block 164. In this way, the mount 11 is detachably mounted to the hanging plate 16.

Similarly, if the mounting base 11 is to be removed from the hanger plate 16, the mounting base 11 is rotated in the opposite direction to slide the first latch 112 away from the second latch 164 in the slot 163 until the first latch 112 is disengaged from the second latch 164. In this way, the mount 11 is detached from the hanging plate 16.

Example eleven

Referring to fig. 1 and fig. 4 to 5, in some embodiments of the present application, a side of the cover housing 13 near the air flow channel 14 is provided with an inclined plane pointing from the edge to the center, the inclined plane is provided with grids 134, and grid bars 135 of the grids 134 are sequentially stacked in a direction pointing to an end surface of the cover housing 13;

the alarm sensor 15 is provided in the cover housing 13.

It will be appreciated that when the airflow reaches the alarm 10, it circulates in the airflow path 14 and then enters the interior of the lid housing 13 through the grille 134. The alarm sensor 15 is disposed in the cover housing 13, and when the air flow enters the cover housing 13, the air flow can be monitored by the alarm sensor 15, and the smoke concentration in the air flow near the alarm 10 is monitored by the alarm sensor 15.

When the alarm 10 is a smoke alarm, the alarm sensor 15 is affected by dust to generate a false alarm. Therefore, the alarm sensor 15 is provided inside the cover case 13, and dust is blocked by the cover case 13, so that the dust outside the alarm 10 is prevented from affecting the alarm sensor 15.

Over time, dust can build up at the lid housing 13 and even pass through the grille 134 into the interior of the lid housing 13, thereby affecting the monitoring of smoke concentration by the alarm sensor 15.

Accordingly, the side of the cover housing 13 near the air flow passage 14 is provided as a slope directed from the edge toward the center, the grill 134 is provided at the slope, the grill strips 135 of the grill 134 are sequentially stacked in a direction directed toward the end face of the cover housing 13, adjacent grill strips 135 are partially overlapped in a direction perpendicular to the inlet of the grill 134, and adjacent grill strips 135 extend toward the center of the cover housing along the slope.

In this way, the grill 134 is formed so as to be opened in the side direction of the cover case 13 and not opened in the end face direction of the cover case 13.

The alarm 10 is typically suspended from a ceiling. When the alarm 10 is hung on a ceiling, the hanging plate 16 may be mounted on the ceiling, the cover housing 13 may be mounted on the mounting seat 11, and then the assembly formed by the cover housing 13 and the mounting seat 11 may be mounted on the hanging plate 16.

In this mounting mode, the mount 11 is above the cover case 13, and the end face of the cover case 13 is opposite to the mount 11. The end face of the cover housing 13 is thus facing upwards. Due to gravity, dust falls on the end face of the cover housing 13. Since the grill 134 is opened in the side direction of the cover housing 13, the end face direction of the cover housing 13 is not opened, and thus dust cannot fall into the cover housing 13 through the grill 134.

In this way, the deposited dust can be effectively prevented from entering the cover housing 13 through the grille 134, which affects the alarm sensor 15, and the reliability of the alarm 10 is further improved.

In the description of the present specification, reference to the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the foregoing description of the preferred embodiment of the utility model is provided for the purpose of illustration only, and is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. An alarm with obstacle detection function, comprising:

a mounting base;

an obstacle sensor mounted to the mount;

a cover housing; and

an alarm sensor provided at the cover housing;

an airflow channel for the detected object to reach the alarm sensor is formed between the cover shell and the mounting seat;

the airflow channel and the alarm sensor are both arranged in the detection area of the obstacle sensor.

2. The alarm with obstacle detection function according to claim 1, wherein a reflector is provided on a side of the cover housing close to the mount, the reflector having a cone shape;

the tip of the reflector is oriented toward the obstacle sensor and aligned with the center of the obstacle sensor.

3. The alarm with the obstacle detecting function according to claim 1, wherein the obstacle sensor is an ultrasonic sensor.

4. The alarm with the obstacle detecting function according to claim 1, wherein the cover housing is provided with at least one support leg, and the cover housing is detachably mounted to the mount via the support leg.

5. The alarm with the obstacle detection function according to claim 4, wherein an insert is arranged at the end part of the supporting leg, a limiting hole is arranged on the insert, a jack is arranged on the mounting seat, and a limiting piece is arranged in the mounting seat;

the plug-in is matched with the jack, and the limiting piece is matched with the limiting hole;

after the plug-in is inserted into the jack, the limiting piece is inserted into the limiting hole.

6. The alarm with obstacle detection function according to claim 5, wherein the number of the supporting feet is four, an insert is arranged at a corresponding position of each supporting foot, and the positions and the number of the insertion holes are matched with the positions and the number of the supporting feet.

7. The alarm with obstacle detection function according to claim 5, wherein a wedge-shaped inclined surface is provided at an end of the stopper, the stopper is pushed by the wedge-shaped inclined surface after the insert contacts the stopper, and the stopper abuts against the insert by a spring.

8. The alarm with obstacle detection function according to claim 1, wherein the cover housing is provided with a first port, the mount is provided with a second port, and the first port is adapted to the second port;

the circuit in the cover shell is electrically connected with the circuit in the mounting seat through the first port and the second port.

9. The alarm with the obstacle detecting function according to claim 8, wherein the cover case is provided with at least one support leg, the first port is provided at the support leg, and the position of the second port corresponds to the position of the first port.

10. The alarm with the obstacle detecting function according to claim 1, wherein a slope pointing from an edge to a center is provided on a side of the cover case close to the air flow passage, the slope is provided with grids, and grid strips of the grids are sequentially laminated in a direction pointing to an end face of the cover case.

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