Linear light beam smoke fire detector with three-point angle fine adjustment mechanism

Abstract

The utility model discloses a linear light beam smoke fire detector with a three-point angle fine tuning mechanism, which comprises a shell, a base, three screws and an elastic driving piece, the front side of the shell is provided with an infrared light emitter and an infrared light receiver, two of the screws are correspondingly arranged at the left end and the right end of the upper part, and the other two screws are correspondingly arranged at the left end and the right end of the lower part. The other screw is arranged on the lower portion of the shell, the threaded ends of the three screws penetrate through the through holes in the shell to be in threaded connection with the threaded holes in the base respectively, a gap is kept between the shell and the base, the three elastic driving pieces are correspondingly arranged nearby the three screws respectively, and the front ends of the elastic driving pieces abut against the shell in an elastic mode. And the rear end of the spring is elastically propped against the base. By the adoption of the technical scheme, the three screws and the three elastic driving pieces are arranged to form a three-point angle fine adjustment mechanism, so that deflection adjustment of the shell in multiple directions and angles is achieved, then multi-angle adjustment of the infrared light emitter is achieved, adjustment is easy, the speed is high, precision is high, and the using effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of smoke fire detector, especially to a linear light beam smoke fire detector with three-point angle fine adjustment mechanism. BACKGROUND

[0002] Linear light beam smoke detector is a kind of detector that uses infrared rays as detection source, and can detect fire within a fixed range around the infrared rays by using the diffusion of smoke.Linear light beam smoke detector is usually composed of infrared emitter and receiver that are installed separately and adjusted.

[0003] At present, the angle of the infrared emitter of the reflective linear light beam smoke detector needs to be adjusted during installation to ensure that it can better receive the light from the reflector plate. During installation, the angle of the linear light beam smoke detector is usually adjusted to make the receiving end fully receive the light from the reflector plate. However, as the distance between the linear smoke alarm and the reflector plate increases, even if the angle is adjusted carefully, the angle deviation will be too large, causing a large amount of light to deviate from the reflector plate, resulting in the receiving end of the linear light beam smoke detector not receiving the signal. Therefore, it is difficult to adjust the angle of the linear light beam smoke detector. Therefore, it is urgent to design a linear light beam smoke detector that can quickly and easily adjust the angle of the infrared emitter. SUMMARY

[0004] To overcome the technical defects of the prior art, the purpose of the utility model is to provide a linear light beam smoke fire detector with a three-point angle fine adjustment mechanism to solve the above technical problems.

[0005] The technical solution adopted by the utility model to solve the technical problems is as follows:

[0006] According to one aspect of the utility model, a linear light beam smoke fire detector with a three-point angle fine adjustment mechanism is designed, which includes a shell, a base, screws and an elastic driving element. The front side of the shell is provided with an infrared emitter and an infrared receiver. The screws are provided with three, two of which are arranged on the left and right ends of the upper part of the shell, and the other screw is arranged on the lower part of the shell. The threaded ends of the three screws are respectively threaded through the through holes on the shell and connected with the threaded holes on the base. The shell and the base are kept apart. The elastic driving element is provided with three and arranged near the three screws respectively. The front end of the elastic driving element is in elastic abutment with the shell, and the rear end is in elastic abutment with the base.

[0007] Adopting the technical scheme, when one screw is screwed clockwise, one side of the shell close to the base is deflected, and the elastic driving member is compressed, when one screw is screwed counterclockwise, the elastic driving member is deflected away from the base under the action of the elasticity, three screws and three elastic driving members are arranged to form a three-point angle fine adjustment mechanism, so that the shell is deflected and adjusted in multiple directions, and the infrared light emitter is adjusted in multiple angles, which is simple, fast, high in precision and good in use effect.

[0008] In order to better solve the above technical defects, the utility model also has better technical schemes:

[0009] In some embodiments, the elastic driving member is a spring and is sleeved on the screw.

[0010] In some embodiments, the elastic driving member is a spring.

[0011] In some embodiments, the spring is arranged in an annular groove on the shell and is arranged in an annular groove on the base.

[0012] In some embodiments, the spring is arranged in an annular groove on the shell and is arranged in an annular groove on the base.

[0013] In some embodiments, the base is internally injection molded with a nut, and the screw is threadedly connected with the nut. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structure schematic view of a linear light beam smoke fire detector with a three-point angle fine adjustment mechanism according to an embodiment of the utility model is shown in the figure.

[0015] Figure 2 A front view structure schematic view of a linear light beam smoke fire detector with a three-point angle fine adjustment mechanism is shown in the figure.

[0016] Figure 3 A structure schematic view of a linear light beam smoke fire detector with a three-point angle fine adjustment mechanism is shown in the figure. Figure 2 A sectional structure schematic view of the linear light beam smoke fire detector with a three-point angle fine adjustment mechanism is shown in the figure.

[0017] Figure 4 An exploded structure schematic view of a linear light beam smoke fire detector with a three-point angle fine adjustment mechanism is shown in the figure.

[0018] REFERENCE SIGNS:

[0019] 1, shell; 2, base; 3, screw; 4, elastic driving member; 5, nut. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the utility model will be further explained in detail in combination with specific implementation manners and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] In the description of the utility model, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0022] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting and fixing should be understood broadly, and the specific meaning of the above words in the utility model can be reasonably determined by the person skilled in the art in combination with the specific content of the technical scheme.

[0023] Reference Figures 1 to 4 As shown in the drawings, the utility model provides a linear light beam smoke fire detector with three-point angle fine adjustment mechanism, including: shell 1, base 2, screw 3 and elastic driving part 4, the front side of shell 1 is provided with infrared light emitter and infrared light receiver, the inside of shell 1 is provided with control circuit board and is electrically connected with infrared light emitter and infrared light receiver, screw 3 is provided with three, the front side of screw 3 has screw head and the rear side has threaded end, two screws 3 are correspondingly arranged on the left and right ends of the upper portion of shell 1, and the other screw 3 is arranged on the left end or right end or middle position of the lower portion of shell 1, the threaded end of three screws 3 is respectively connected with the threaded hole on base 2 through the through hole on shell 1, further, the inside of base 2 is injection molded and fixed with nut 5, screw 3 is connected with nut 5 in screw threads, and the gap is kept between shell 1 and base 2;Elastic driving part 4 is provided with three and is correspondingly arranged near three screws 3, the front end of elastic driving part 4 is elastically abutted with shell 1, and the rear end is elastically abutted with base 2, elastic driving part 4 is spring or spring sheet, when elastic driving part 4 is spring, it is sleeved on screw 3, the front end of spring is placed in the annular groove on shell 1 and is elastically abutted with shell 1, and the rear end is placed in the annular groove on base 2 and is elastically abutted with base 2, when elastic driving part 4 is spring sheet, the front end of spring sheet is placed in the groove on shell 1, and the rear end is placed in the groove on base 2, and the preferred elastic driving part 4 of the embodiment is spring.

[0024] When the linear light beam smoke fire detector is installed to the wall surface, the reflecting plate is installed to the wall surface at a set distance position in front of the linear light beam smoke fire detector, the deflection adjustment of the shell 1 multi-direction angle is realized by screwing one or more of the three screws 3, and then the multi-angle adjustment of the infrared light emitter is realized.

[0025] The principle of the linear light beam smoke fire detector is that the infrared light emitted by the infrared light emitter in the front side of the shell 1 is irradiated to the reflecting plate, is reflected by the reflecting plate and is received by the infrared light receiver, and the fire is determined by using the smoke to reduce the light quantity of the light beam emitted by the infrared light emitter to the infrared light receiver.

[0026] The above only describes some embodiments of the present application, and those skilled in the art can make some modifications and improvements without departing from the inventive concept, and these all belong to the protection scope of the present application.

Claims

1. A linear beam smoke fire detector having a three point angular fine adjustment mechanism, characterized by, The utility model relates to a kind of infrared remote controller, including: Shell, base, screw and elastic driving part, the front side of the shell is provided with infrared light emitter and infrared light receiver, the screw is provided with three, two screws are correspondingly arranged on the upper left and right ends of the shell, another screw is arranged on the lower part of shell, the threaded end of three screws is respectively connected with the threaded hole on the base through the through hole on the shell, and the gap between the shell and the base is kept, the elastic driving part is provided with three, and is correspondingly arranged near three screws respectively, and the front end of elastic driving part is elastically abutted with the shell, and the rear end is elastically abutted with the base.

2. A linear beam smoke fire detector having a three-point angular fine adjustment mechanism as defined in claim 1, wherein, The elastic driving part is a spring, and is sleeved on the screw.

3. A linear beam smoke fire detector having a three-point angular fine adjustment mechanism as defined in claim 1, wherein, The elastic driving part is a spring.

4. A linear beam smoke fire detector having a three-point angular fine adjustment mechanism as defined in claim 2, wherein, The front end of the spring is placed in the annular groove on the shell, and the rear end is placed in the annular groove on the base.

5. A linear beam smoke fire detector having a three-point angular fine adjustment mechanism as defined in claim 3, wherein, The front end of the spring is placed in the annular groove on the shell, and the rear end is placed in the annular groove on the base.

6. A linear beam smoke fire detector having a three-point angular fine adjustment mechanism as defined in claim 1, wherein, The base is internally injection molded with a nut, and the screw is threadedly connected with the nut.

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