A gas leakage detector configured with a light guide structure

Abstract

The utility model discloses a gas leakage detector with light guide structure relates to gas alarm technical field, the utility model discloses a shell, circuit board, pilot lamp and light guide body, the shell is provided with mounting hole, the light guide body is set up in the mounting hole, the shell is provided with the light guide hole that communicates with mounting hole, the pilot lamp is set up in the circuit board, the circuit board is set up in the shell, the position of light guide body and the position of pilot lamp correspond, and the light is conducted to the shell outside through the light guide body, and the light is transmitted from the light guide hole.

Description

Technical Field

[0001] This utility model relates to the field of gas alarm technology, specifically providing a gas leak detector equipped with a light guide structure. Background Technology

[0002] Gas leaks are a serious concern for gas safety, and are typically detected using gas leak detectors. Once a gas leak is detected, the detector sends an alarm to the user, allowing them to take timely action. Alarm signals from a gas leak detector may include indicator lights and audible alarm sounds.

[0003] However, when it's necessary to use indicator lights to alert users to alarm information, these lights need to be installed on the gas leak detector's housing. The indicator lights must be mounted on the housing, and then connected to the circuit board inside the housing via wires to establish an electrical connection. However, mounting the indicator lights to the housing often requires screws or glue, making the installation process cumbersome and resulting in low assembly efficiency for the gas leak detector. Utility Model Content

[0004] This invention provides a gas leak detector equipped with a light guide structure to solve the problem of low assembly efficiency of gas leak detectors caused by the installation of indicator lights.

[0005] The technical solution of this utility model is as follows:

[0006] A gas leak detector with a light guide structure includes a housing, a circuit board, an indicator light, and a light guide. The housing has a mounting hole, the light guide is disposed within the mounting hole, and the housing has a light guide hole communicating with the mounting hole. The indicator light is disposed on the circuit board, which is disposed within the housing. The position of the light guide corresponds to the position of the indicator light, and light is transmitted to the outside of the housing through the light guide. The light is emitted from the light guide hole.

[0007] In this solution, the indicator lights are directly mounted on the circuit board, eliminating the need to mount them onto the housing. The light guide is fixed via mounting holes, and during assembly, the light guide is simply inserted into the mounting holes, simplifying the process and improving assembly efficiency.

[0008] Preferably, the light guide has a protrusion whose shape matches the shape of the light guide hole, and the protrusion passes through the light guide hole and extends to the outside of the housing.

[0009] In this design, the protrusion extends beyond the housing for easy observation by the user. Simultaneously, the protrusion also enhances the positioning of the light guide.

[0010] Preferably, the light guide hole is a strip-shaped hole, with one end of the strip-shaped hole extending to the end face of the housing and the other end of the strip-shaped hole extending to the side of the housing.

[0011] In this design, the two ends of the strip-shaped hole extend to the end face and side face of the housing, respectively, allowing the user to observe it from more angles.

[0012] Preferably, the diameter of the mounting hole is larger than the diameter of the indicator light.

[0013] In this solution, the diameter of the mounting hole is increased so that the indicator light can correspond to the opening position of the mounting hole, which facilitates better transmission of the indicator light to the light guide.

[0014] Preferably, the indicator light is inserted into the mounting hole.

[0015] In this design, the indicator light is inserted into the mounting hole, which ensures that the light from the indicator light can illuminate the light guide. In addition, the indicator light also serves to limit the movement of the light guide.

[0016] Preferably, to solve the problem of the housing being inconvenient to install, the housing is provided with a fixing part, which is used to fix the housing.

[0017] In this design, the housing is equipped with a fixing part, which is used to fix the housing.

[0018] Preferably, the fixing part is a hanging plate, which is detachably connected to the housing, and the hanging plate is provided with hanging holes.

[0019] In this design, the mounting plate is detachably connected to the housing, and the mounting plate has hanging holes to facilitate the hanging and placement of the gas leak detector, thus making the installation of the gas leak detector easier.

[0020] Preferably, to prevent the light guide inside the mounting hole from moving freely and detaching from the mounting hole, the housing includes a first part and a second part, with the mounting hole located in the first part and the circuit board located in the second part.

[0021] In this design, when the second part and the first part are assembled into a housing, the light guide and the circuit board are respectively located in the first part and the second part, facilitating maintenance. For example, if both the light guide and the circuit board are located in the first part, and the light guide malfunctions and needs to be replaced, the circuit board would need to be removed for replacement. However, in this design, the light guide can be replaced without removing the circuit board, thus simplifying maintenance.

[0022] Preferably, in order to improve the assembly efficiency of the first part and the second part, a rotation locking structure is provided between the first part and the second part, and the first part and the second part are connected by the rotation locking structure.

[0023] In this solution, the first part and the second part are connected by a rotation locking structure. Compared with the screw connection, the connection efficiency of the rotation locking structure is higher and the cost can be reduced.

[0024] Preferably, the housing is provided with a plurality of vent holes.

[0025] In this design, the vent allows ambient air to enter the housing, enabling sensors and other components inside the housing to detect the concentration of gas in the ambient air.

[0026] The beneficial effects of this utility model are:

[0027] This invention uses a light guide to transmit the light from the indicator light inside the housing to the outside of the housing, thereby... Attached Figure Description

[0028] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a cross-sectional view from the left perspective of this utility model;

[0031] Figure 3 This is a cross-sectional view of the present invention from a left-side perspective at another location;

[0032] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0033] Figure 5 This is a partial structural diagram of the circuit board and housing of this utility model;

[0034] Figure 6 This is a partial cross-sectional view of the connection between the first and second parts of this utility model.

[0035] In the above figures, the corresponding reference numerals are as follows:

[0036] 1. Housing; 2. Mounting hole; 3. Light guide; 4. Indicator light; 5. Circuit board; 6. Hanging plate; 7. Lock; 8. Through hole; 9. Locking plate; 10. Locking groove; 11. Locking tooth; 12. Buckle; 13. Support column; 101. First part; 102. Second part. Detailed Implementation

[0037] The technical solution of this utility model will be clearly and completely described in conjunction with the accompanying drawings and through specific embodiments.

[0038] Example 1:

[0039] like Figure 1 and Figure 2 As shown in the figure, this embodiment provides a gas leak detector with a light guide structure, including a housing 1, a light guide 3, a circuit board 5, and an indicator light 4. The housing 1 has a mounting hole 2, and the light guide 3 is inserted into the mounting hole 2. The indicator light 4 is integrated on the circuit board 5, which is installed inside the housing 1. The position of the indicator light 4 corresponds to the position of the opening of the mounting hole 2. The light guide 3 is used to conduct the light of the indicator light 4. The housing 1 has a light guide hole that connects the mounting hole 2 to the outside of the housing 1. The light conducted inside the mounting hole 2 can be transmitted to the outside of the housing 1 through the light guide hole.

[0040] The light guide 3 has a protrusion that passes through the light guide hole and extends to the outside of the housing 1. The light transmitted by the light guide 3 can be transmitted to the outside through the protrusion for easy observation by the user.

[0041] The shape of the protrusion matches the shape of the light guide hole, and the protrusion can also be used to position the light guide 3.

[0042] The outer shape of housing 1 is cylindrical. The light guide hole is located at the junction of the end face and the side face of housing 1. The light guide hole is a strip-shaped hole, with one end located on the end face of housing 1 and the other end located on the side face of housing 1. The shape of light guide 3 is adapted to the shape of mounting hole 2. The protrusion is located at the corner of light guide 3 and protrudes from the end face and the side face of housing 1.

[0043] The opening direction of the mounting hole 2 corresponds to the position of the indicator light 4. The indicator light 4 is directly integrated into the circuit board 5 and does not need to be installed separately. Because the circuit board 5 is installed inside the housing 1, there will always be a certain distance between the circuit board 5 and the inner side of the housing 1. The position of the indicator light 4 is also a certain distance from the edge of the circuit board 5. Therefore, in order to facilitate the transmission of the light from the indicator light 4 to the opening of the mounting hole 2, in this embodiment, the diameter of the mounting hole 2 is set to be larger than the diameter of the indicator light 4, so that the light from the indicator light 4 can be better transmitted to the light guide 3 inside the mounting hole 2.

[0044] Alternatively, the length of mounting hole 2 can be extended so that it can completely enclose indicator light 4, meaning one end of indicator light 4 can be inserted into mounting hole 2. In this case, the light from indicator light 4 will inevitably illuminate light guide 3 and be transmitted to the outside through light guide 3.

[0045] The width of the light guide hole is smaller than the width of the light guide 3, in order to prevent the light guide 3 from detaching from the light guide hole.

[0046] The position of the opening of the mounting hole 2 corresponds to the position of the indicator light 4. After installation, the indicator light 4 is located at the opening of the mounting hole 2. The indicator light 4 can be used to constrain the position of the light guide 3 and prevent the light guide 3 from detaching from the opening of the mounting hole 2.

[0047] The protrusion is elongated, with its two ends extending to the two surfaces of the light guide 3.

[0048] like Figure 5 As shown, a clip 12 for fixing the circuit board 5 can be provided inside the housing 1, and the circuit board 5 is fixed to the housing 1 by the clip 12. A sensor for detecting the composition of combustion gases in the air is provided on the circuit board 5. A support column 13 is provided inside the housing 1 for supporting the circuit board 5 from below. The support column 13 supports the circuit board 5 from below, and the clip 12 is fastened to the upper side of the circuit board 5 to fix the circuit board 5. Optionally, the clip 12 can be fastened to the edge of the circuit board 5, or a hole can be made in the circuit board 5 so that the clip 12 passes through the hole and is fastened to the circuit board 5.

[0049] Because the circuit board 5 is located inside the housing 1, the housing 1 is provided with vents to allow gases from the external environment to enter the housing 1. Multiple vents can be provided to improve ventilation efficiency and thus enhance detection accuracy.

[0050] like Figure 3 and Figure 4 As shown, a hanging plate 6 is provided on the back of the housing 1. The hanging plate 6 is connected to the housing 1 by a latch 7. The latch 7 is provided on the hanging plate 6. The housing 1 is provided with a through hole 8 that matches the latch 7 on the hanging plate 6. The latch 7 of the hanging plate 6 passes through the through hole 8 and is fastened to the housing 1.

[0051] Example 2:

[0052] This embodiment 2 provides a gas leak detector with a light guide structure. Unlike embodiment 1, the housing 1 in this embodiment 2 includes a first part 101 and a second part 102, and the first part 101 and the second part 102 are detachably connected.

[0053] The first part 101 and the second part 102 are cylindrical structures with one end closed, and the hanging plate 6 is connected to the end face of the second part 102.

[0054] like Figure 6 As shown, the first part 101 is provided with a locking plate 9 extending along the axial direction. A locking groove 10 is provided on the outer surface of the locking plate 9. The locking groove 10 is an arc-shaped groove, the center of which coincides with the axis of the first part 101. Both ends of the locking groove 10 penetrate the side surface of the locking plate 9. The second part 102 is provided with locking teeth 11 for fitting into the locking groove 10. One side of the locking teeth 11 has a notch for inserting the locking plate 9. When the first part 101 and the second part 102 are connected, the locking plate 9 of the first part 101 is aligned with the notch, and then the locking plate 9 of the first part 101 is inserted into the notch. At this time, the first part 101 and the second part 102 are connected. Then, the second part 102 is rotated relative to the first part 101, causing the locking teeth 11 to move circumferentially and enter the locking groove 10.

[0055] The locking plate 9, the locking groove 10 constructed on the locking plate 9, and the locking teeth 11 provided on the second part 102 together constitute a rotation locking structure, realizing a fastener-free connection between the first part 101 and the second part 102.

[0056] The first part 101 may be provided with two, three or more locking plates 9 at intervals, while the second part 102 is provided with the same number of locking teeth 11. Each locking tooth 11 has a notch between it for the locking plate 9 to be inserted.

[0057] The circuit board 5 is located in the second part 102, and the mounting hole 2 is located in the first part 101. During the assembly process, the installation of the light guide 3 and the installation of the circuit board 5 will not interfere with each other.

[0058] When the circuit board 5 is basically flush with the opening of the second part 102, the opening of the mounting hole 2 constructed in the first part 101 is also flush with the opening of the first part 101. At this time, the indicator light 4 can be inserted into the mounting hole 2, which constrains the light guide 3 and prevents the light guide 3 from leaving the mounting hole 2. However, when the second part 102 is relatively deep and there is a certain gap between the circuit board 5 and the opening of the second part 102, this embodiment provides an optional implementation method. After the first part 101 and the second part 102 are connected, the second part 102 blocks the opening of the mounting hole 2, preventing the light guide 3 from falling out of the mounting hole 2. By constraining the position of the light guide 3 through the second part 102, it is possible to avoid the light guide 3 colliding and squeezing with the indicator light 4, which would cause damage to the indicator light 4. The second part 102 can be provided with inwardly protruding stiffeners or limiting rods protruding towards the opening of the mounting hole 2. After the first part 101 and the second part 102 are connected, the stiffeners or limiting rods are located at the opening of the mounting hole 2 to achieve the constraint effect on the light guide 3.

Claims

1. A gas leak detector equipped with a light-guiding structure, characterized in that, The device includes a housing (1), a circuit board (5), an indicator light (4), and a light guide (3). The housing (1) is provided with a mounting hole (2), and the light guide (3) is disposed inside the mounting hole (2). The housing (1) is provided with a light guide hole communicating with the mounting hole (2). The indicator light (4) is disposed on the circuit board (5), and the circuit board (5) is disposed inside the housing (1). The position of the light guide (3) corresponds to the position of the indicator light (4). The light is transmitted to the outside of the housing (1) through the light guide (3), and the light is emitted from the light guide hole.

2. A gas leak detector with a light-guiding structure according to claim 1, characterized in that, The light guide (3) is provided with a protrusion, the shape of which is adapted to the shape of the light guide hole, and the protrusion passes through the light guide hole and extends to the outside of the housing (1).

3. A gas leak detector with a light-guiding structure according to claim 2, characterized in that, The light guide hole is a strip-shaped hole, one end of which extends to the end face of the housing (1), and the other end of which extends to the side of the housing (1).

4. A gas leak detector with a light-guiding structure according to claim 1, characterized in that, The diameter of the mounting hole (2) is larger than the diameter of the indicator light (4).

5. A gas leak detector with a light-guiding structure according to claim 4, characterized in that, The indicator light (4) is inserted into the mounting hole (2).

6. A gas leak detector with a light-guiding structure according to claim 1, characterized in that, The housing (1) is provided with a fixing part, which is used to fix the housing (1).

7. A gas leak detector with a light-guiding structure according to claim 6, characterized in that, The fixing part is a hanging plate (6), which is detachably connected to the housing (1), and the hanging plate (6) is provided with hanging holes.

8. A gas leak detector with a light-guiding structure according to claim 1, characterized in that, The housing (1) includes a first part (101) and a second part (102), the mounting hole (2) is disposed in the first part (101), and the circuit board (5) is disposed in the second part (102).

9. A gas leak detector with a light-guiding structure according to claim 8, characterized in that, A rotation locking structure is provided between the first part (101) and the second part (102), and the first part (101) and the second part (102) are connected by the rotation locking structure.

10. A gas leak detector with a light-guiding structure according to claim 1, characterized in that, The housing (1) is provided with several ventilation holes.

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