CN214795247U

CN214795247U - Curtain detector

Info

Publication number: CN214795247U
Application number: CN202121354265.3U
Authority: CN
Inventors: 林蔚玮
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-11-19
Anticipated expiration: 2031-06-17

Abstract

An embodiment of the utility model provides a curtain detector, include: the shell comprises a front shell and a rear shell, the front shell and the rear shell are mutually spliced to form a hollow cavity, the front shell is provided with a window, and the rear shell is fixedly arranged on a horizontal or vertical mounting surface; the circuit board is arranged on the rear shell and is parallel to the rear shell; the infrared temperature sensor is arranged on one side of the circuit board, which faces the front shell, and light rays of the infrared temperature sensor are emitted out of the shell from the window; the shielding module is arranged on the circuit board and shields a part of light of the infrared temperature sensor between the infrared temperature sensor and the window, and the shielding module is provided with a first shielding position and a second shielding position corresponding to the direction of the mounting surface.

Description

Curtain detector

Technical Field

The utility model relates to an intelligence protector field, in particular to curtain detector.

Background

Can use shading mechanism and realize sheltering from to infrared sensor's light-emitting direction among the curtain detector in the existing market, but should shelter from the outside that the mechanism set up mostly in the curtain detector, lead to product appearance's wholeness and aesthetic property all to receive the influence. And corresponding to products with different installation modes or different wiring modes, a special shading mechanism is usually required to be specifically arranged, so that a large amount of material cost and mold opening cost are caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a curtain detector, it further sets up in the cavity of casing and shelters from the module corresponding to the different mounting means for shelter from that some outgoing light that surpasss detection range corresponding to the mounting means, carry out the part to infrared temperature sensor's outgoing light promptly and shelter from, thereby guarantee that the outgoing light of curtain detector can enough cover detection range, can keep suitable sensitivity again.

An embodiment of the utility model provides a curtain detector, include:

the shell comprises a front shell and a rear shell, the front shell and the rear shell are mutually spliced to form a hollow cavity, the front shell is provided with a window, and the rear shell is fixedly arranged on a horizontal or vertical mounting surface;

the circuit board is arranged on the rear shell and is parallel to the rear shell;

the infrared temperature sensor is arranged on one side of the circuit board, which faces the front shell, and light rays of the infrared temperature sensor are emitted out of the shell from the window;

the shielding module is arranged on the circuit board and shields a part of light of the infrared temperature sensor between the infrared temperature sensor and the window, and the shielding module is provided with a first shielding position and a second shielding position corresponding to the direction of the mounting surface.

In one embodiment, the infrared temperature sensor is mounted on the circuit board with a declination.

In one embodiment, the light exit field of the infrared temperature sensor has a first angular range, the first angular range being greater than 90 °.

In one embodiment, the first and second occlusion positions form a second angular range therebetween, the second angular range being half the first angular range.

In one embodiment, the central axis of the infrared temperature sensor forms a first included angle with the normal direction of the circuit board,

wherein, gamma < (alpha-90) is 2.

In one embodiment, the shielding module comprises:

the shielding shell is arranged on the circuit board;

the swing rod is pivotally arranged on the shielding shell and is switched between the first shielding position and the second shielding position;

the shielding piece is fixed at the front end of the swing rod and perpendicular to the swing rod, extends and is located between the infrared temperature sensor and the window so as to shield a part of light of the infrared temperature sensor.

In one embodiment, the shielding module further comprises:

the reinforcing rib is connected to the front end of the swing rod, the shielding piece and the shielding piece, and the shielding piece faces one side of the infrared temperature sensor.

In one embodiment, the rear shell further comprises a first slot, the rear end of the swing rod is exposed out of the shell through the first slot, and the rear end of the swing rod is driven by an external force to drive the swing rod to switch between the first shielding position and the second shielding position.

In one embodiment, the swing rod is located in the hollow cavity, and the front end of the swing rod and/or the shielding piece are/is driven by an external force to drive the swing rod to switch between the first shielding position and the second shielding position.

In one embodiment, the rear shell is hung on the mounting surface via a hanging plate.

According to the above technical solution, in order to adapt to two different installation manners, the infrared temperature sensor 30 of the present embodiment has a larger exit angle relative to the detector with a single installation manner, and corresponding to different installation manners, a part of the exit light of the infrared temperature sensor 30 may face a temperature beyond a detection range, which causes energy waste or energy overlapping to affect the detection sensitivity. Therefore, for different installation methods, the curtain detector of the embodiment further includes a shielding module 40 in the hollow cavity of the housing, so as to shield a part of the outgoing light beyond the detection range corresponding to the installation method, that is, partially shield the outgoing light of the infrared temperature sensor 30, thereby ensuring that the outgoing light of the curtain detector can cover the detection range and maintain proper sensitivity.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Figure 1 is a cross-sectional view of a first embodiment of a curtain detector of the present invention.

Fig. 2 is a schematic structural view of the shielding module of the present invention.

Figure 3 is a rear view of a first embodiment of a curtain detector of the present invention.

Figure 4 is an angular schematic view of a first embodiment of a curtain detector of the present invention.

Figure 5 is a cross-sectional view of a second embodiment of a curtain detector of the present invention.

Figure 6 is a rear view of a second embodiment of a curtain detector of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled.

An object of the utility model is to provide a curtain detector, it further sets up in the cavity of casing and shelters from the module corresponding to the mounting means of difference for shelter from that some emergent ray that surpasss the detection scope corresponding to the mounting means, carry out the part to infrared temperature sensor's emergent ray promptly and shelter from, thereby guarantee that the emergent ray of curtain detector can enough cover the detection scope, can keep suitable sensitivity again.

Figure 1 is a cross-sectional view of a first embodiment of a curtain detector of the present invention. Fig. 2 is a schematic structural view of the shielding module of the present invention. As shown in fig. 1 and 2, the present invention provides a curtain detector, comprising:

the device comprises a shell, wherein the shell comprises a front shell 11 and a rear shell 12, the front shell 11 and the rear shell 12 are mutually spliced to form a hollow cavity, the front shell 11 is provided with a window 111, and the rear shell 12 is fixedly arranged on a horizontal or vertical mounting surface;

a circuit board 20, wherein the circuit board 20 is arranged on the rear shell 12 and is parallel to the rear shell 12;

an infrared temperature sensor 30 installed at a side of the circuit board 20 facing the front case 11, and light of the infrared temperature sensor 30 is emitted out of the case through the window 111;

and the shielding module 40 is arranged on the circuit board 20, the shielding module 40 shields a part of light of the infrared temperature sensor 30 from between the infrared temperature sensor 30 and the window 111, and the shielding module 40 has a first shielding position and a second shielding position corresponding to the direction of the mounting surface.

The curtain probe of the present embodiment employs the rear case 12 as a fixing surface, and has two different mounting manners by fixedly mounting the rear case 12 to a mounting surface in a horizontal direction or a vertical direction. Wherein the rear case 12 may be further fixed to the installation surface by a hanging plate 50. For example, it may be fixed to a horizontally extending mounting surface such as a ceiling in a ceiling-mounted manner. Alternatively, it may be fixed to a vertically extending mounting surface, such as a vertical wall, in a wall-mounted manner.

In order to accommodate two different mounting manners, the infrared temperature sensor 30 of the present embodiment has a larger exit angle relative to the detector of a single mounting manner, and corresponding to different mounting manners, a part of the exit light of the infrared temperature sensor 30 may face a temperature beyond the detection range, which may cause energy waste or energy overlap to affect the detection sensitivity. Therefore, for different installation methods, the curtain detector of the embodiment further includes a shielding module 40 in the hollow cavity of the housing, so as to shield a part of the outgoing light beyond the detection range corresponding to the installation method, that is, partially shield the outgoing light of the infrared temperature sensor 30, thereby ensuring that the outgoing light of the curtain detector can cover the detection range and maintain proper sensitivity.

For example, in a wall-mounted installation, it is usually necessary to mount the curtain detector on the upper portion (i.e., a higher position) of the vertical wall, and as shown in fig. 1, the outgoing light from the upper portion of the infrared temperature sensor 30 is out of the detection range and is easily reflected by the ceiling, and accordingly, the shielding module 40 is required to shield the upper portion of the infrared temperature sensor 30 and expose the lower portion.

Or, in the ceiling mounting manner, since the central axis of the infrared temperature sensor 30 and the normal direction of the circuit board need to form an included angle, so that the light energy at both sides of the normal direction of the circuit board is unbalanced, and the outgoing light energy at the lower portion of the infrared temperature sensor 30 is greater than the outgoing light energy at the upper portion in fig. 1, correspondingly, the shielding module 40 needs to shield the lower portion of the infrared temperature sensor 30 and expose the upper portion.

Thus, in the example shown in fig. 1 and 2, the shielding module 40 has a first shielding position (W-block) for shielding the outgoing light from the upper portion of the infrared temperature sensor 30 and a second shielding position (C-block) for shielding the outgoing light from the lower portion of the infrared temperature sensor 30, which correspond to the wall-mounting method and the ceiling-mounting method, respectively.

Specifically, the infrared temperature sensor 30 is mounted to the circuit board 20 with a downward inclination. As shown in fig. 4, the central axis of the outgoing light of the infrared temperature sensor 30 and the normal direction of the circuit board 20 form a first included angle γ, and the first included angle is set to be suitable for two mutually perpendicular installation methods.

In a preferred embodiment, the light exit field of the infrared temperature sensor 30 has a first angular range α, which is greater than 90 °, for example 120 °.

Correspondingly, a second angular range β is formed between the first shielding position and the second shielding position, the second angular range β being half of the first angular range α. That is, in the first shielding position and the second shielding position, the shielding module 40 shields one-half of the emitting energy of the infrared temperature sensor 30.

In order to enable the shielding module 30 to realize the shielding function with a smaller adjustment range (second angle range), i.e. occupy a smaller space, the central axis of the infrared temperature sensor 30 and the normal direction of the circuit board 20 form a first included angle γ, where γ < (α -90 °)/2. In a preferred embodiment, the first angular range α is 120 ° and the first angle γ is 13 °.

As shown in fig. 1 and 2, the shielding module 40 includes:

a shielding case 41, the shielding case 41 being mounted on the circuit board 20;

the swing rod 42 is pivotally arranged on the shielding shell 41, and the swing rod 42 is switched between a first shielding position and a second shielding position;

the shielding piece 43 is fixed at the front end of the swing rod 42, the shielding piece 43 extends perpendicular to the swing rod 42 and is located between the infrared temperature sensor 30 and the window 111 to shield a part of light of the infrared temperature sensor 30.

The shielding case 41 may further include a limiting mechanism 44 corresponding to the first shielding position and the second shielding position, which achieves the purpose of limiting the swing link 42 in the first shielding position and the second shielding position by limiting the corresponding position of the swing link 42. For example, the position-limiting mechanism 44 may be a groove disposed on the surface of the shielding shell 41, and correspondingly, the surface of the swing link 42 may have a protrusion matching with the groove.

The shading module 40 of the present embodiment is disposed inside the housing of the curtain probe, so that the appearance of the curtain probe has integrity and aesthetic appearance. Further, for convenience of operation, in the first embodiment as shown in fig. 1 and 3, the rear case 12 further includes the first slot 121, and the rear end 422 of the swing link 42 is exposed out of the case through the first slot 121.

The first embodiment shown in fig. 1 and 3 can be implemented as a wireless version of the curtain detector, i.e. the product does not need to be wired additionally, therefore, the circuit board 20 does not need to be exposed outside the housing, the rear housing 12 encapsulates the circuit board 20 inside the housing, only the first slot 121 is opened on the surface of the rear housing 12 to expose the rear end of the swing link 42 of the shielding module 40, and the user can toggle the rear end of the swing link 42 to switch the swing link 42 between the first shielding position and the second shielding position.

Fig. 5 and 6 show another embodiment of the curtain detector of the present invention, which may be implemented as a wired version of the curtain detector, i.e., the product requires additional wiring, and thus, the back shell 12 requires at least a portion of the circuit board 20 to be exposed. The switching position for the shielding module 40 may be set at a side toward the front case 11. For example, the swing link 42 is disposed in the hollow cavity between the front housing 11 and the rear housing 12, the front end of the swing link 42 is located behind the front housing 11, after the front housing 11 is removed, the front end of the swing link 42 and/or the shielding plate 43 can be exposed, and the user can toggle the front end of the swing link 42 and/or the shielding plate 43 to switch the swing link 42 between the first shielding position and the second shielding position.

Correspondingly, as shown in fig. 5, the shielding module 40 further includes:

and the reinforcing rib 44 is connected to the front end of the swing rod 42 and the shielding piece 43, and is positioned on one side of the shielding piece 43 facing the infrared temperature sensor 30. Since the front end of the swing lever 42 or the shielding plate 43 is required as an operation portion for switching the shift position, a reinforcing rib 44 is required to reinforce the strength of the swing lever 42.

In this context, "a" does not mean that the number of the relevant portions of the present invention is limited to "only one", and "one" does not mean that the number of the relevant portions of the present invention "more than one" is excluded.

Unless otherwise indicated, numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.

The above list of details is only for the feasible embodiments of the present invention and is not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.

Claims

1. A curtain probe, comprising:

the shell comprises a front shell (11) and a rear shell (12), the front shell (11) and the rear shell (12) are spliced with each other to form a hollow cavity, the front shell (11) is provided with a window (111), and the rear shell (12) is fixedly installed on a horizontal or vertical installation surface;

the circuit board (20), the said circuit board (20) is installed on the said rear shell (12), and parallel arrangement with the said rear shell (12);

the infrared temperature sensor (30) is arranged on one side, facing the front shell (11), of the circuit board (20), and light rays of the infrared temperature sensor (30) are emitted out of the shell from the window (111);

the shielding module (40) is arranged on the circuit board (20), the shielding module (40) shields a part of light of the infrared temperature sensor (30) from between the infrared temperature sensor (30) and the window (111), and the shielding module (40) is provided with a first shielding position and a second shielding position corresponding to the direction of the mounting surface.

2. A curtain probe as claimed in claim 1, characterised in that the infrared temperature sensor (30) is mounted on the circuit board (20) with a downtilt.

3. A curtain detector as claimed in claim 2, characterised in that the light exit field of the infrared temperature sensor (30) has a first angular range a, which is greater than 90 °.

4. A curtain detector as claimed in claim 3, characterised in that the first and second shade positions define a second angular range β therebetween, the second angular range β being half the first angular range α.

5. A curtain detector as claimed in claim 3, characterised in that the central axis of the infrared temperature sensor (30) forms a first angle γ with the normal direction of the circuit board (20),

wherein, gamma < (alpha-90) is 2.

6. A curtain detector as claimed in claim 1, characterised in that the shading module (40) comprises:

a shielding case (41), wherein the shielding case (41) is installed on the circuit board (20);

a swing lever (42), the swing lever (42) being pivotally mounted to the shielding case (41), the swing lever (42) being switched between the first shielding position and the second shielding position;

the shielding piece (43) is fixed at the front end of the swing rod (42), the shielding piece (43) is perpendicular to the swing rod (42) and extends and is located between the infrared temperature sensor (30) and the window (111) so as to shield a part of light of the infrared temperature sensor (30).

7. A curtain detector as claimed in claim 6, wherein the shading module (40) further comprises:

the reinforcing rib (44) is connected to the front end of the swing rod (42) and the shielding piece (43), and is positioned on one side, facing the infrared temperature sensor (30), of the shielding piece (43).

8. A curtain detector as claimed in claim 6, characterised in that the rear housing (12) further comprises a first slot (121), the rear end (422) of the rocker (42) being exposed out of the housing via the first slot (121), the rear end (422) of the rocker (42) being urged by an external force to drive the rocker (42) between the first and second screening positions.

9. A curtain detector as claimed in claim 6, characterised in that the pendulum rod (42) is located within the hollow cavity, and the leading end of the pendulum rod (42) and/or a shutter plate (43) is/are driven by an external force to switch the pendulum rod (42) between the first and second shutter positions.

10. A curtain probe as claimed in claim 1, characterised in that the rear housing (12) is suspended from the mounting surface via a suspension plate (13).