A detection module and a hair styling device

Abstract

The utility model provides a kind of detection module, comprising: shell, the top of shell is equipped with detection hole;Circuit board, circuit board is fixed in the inside of shell;Infrared temperature sensor, infrared temperature sensor is fixed on circuit board, and located in the inside of shell, the receiving light path of infrared temperature sensor passes through detection hole;Distance sensor, distance sensor is fixed on circuit board, and located in the inside of shell, the receiving and transmitting light path of distance sensor passes through detection hole.The utility model provides detection module by integrating infrared temperature sensor and distance sensor, can detect the distance between the surface of measured heat body while detecting the surface temperature of heat body, so that when temperature control is carried out in the hairdressing equipment applied with detection module, two parameters of temperature and distance can be simultaneously referenced, help to improve the accuracy of temperature control, further reduce the probability of hair heating damage.

Description

Technical Field

[0001] This utility model relates to the field of detection element technology, specifically to a detection module and hair styling equipment. Background Technology

[0002] Currently, most hair styling devices on the market use temperature sensors for temperature control. For example, hair dryers automatically adjust the airflow temperature based on the detected hair temperature.

[0003] However, current technology only controls the hair by detecting the surface temperature of the heating element (hair temperature) using a temperature sensor, which can still easily lead to hair damage from overheating. Utility Model Content

[0004] The technical problem solved by this invention is to provide a detection module that can help improve the accuracy of temperature control and further reduce the probability of hair overheating and damage.

[0005] The above-mentioned technical problems are solved by the following technical solution: a detection module, comprising: a housing, the top of which is provided with a detection hole; a circuit board, which is fixed inside the housing; an infrared temperature sensor, which is fixed on the circuit board and located inside the housing, the receiving light path of the infrared temperature sensor passing through the detection hole; and a distance sensor, which is fixed on the circuit board and located inside the housing, the receiving light path of the distance sensor passing through the detection hole.

[0006] The detection module provided by this utility model integrates an infrared temperature sensor and a distance sensor, which can detect the distance between the surface of the heating element and the surface of the heating element at the same time. Therefore, when hairdressing equipment with the detection module is used for temperature control, it can refer to both temperature and distance parameters at the same time, which helps to improve the accuracy of temperature control and further reduce the probability of hair damage from overheating.

[0007] Furthermore, the infrared temperature sensor is located at the central axis of the housing, and the distance sensor is located to the side of the infrared temperature sensor; or Of the infrared temperature sensor and the distance sensor, the one with a larger diameter is located at the central axis of the housing, and the other sensor is located to the side of the one with a smaller diameter; or Of the infrared temperature sensor and the distance sensor, the sensor with the smaller detection angle is located at the central axis of the housing, and the other sensor is located to the side of the sensor with the smaller detection angle.

[0008] Furthermore, the circuit board includes a first circuit board and a second circuit board arranged at an interval between the upper and lower parts, the second circuit board being located above the first circuit board, and the middle area of ​​the second circuit board having a hollow portion; an infrared temperature sensor is fixed on the first circuit board and is disposed through the hollow portion of the second circuit board; a distance sensor is fixed on the second circuit board.

[0009] Furthermore, the circuit board also includes a connector located between the first circuit board and the second circuit board, and fixedly connected to both the first and second circuit boards; the inner wall of the housing is provided with a limiting protrusion, and when the circuit board is installed in the housing, the limiting protrusion abuts against the upper surface of the second circuit board to restrict the up and down movement of the first and second circuit boards inside the housing.

[0010] Furthermore, the infrared temperature sensor includes a probe and a signal needle; the detection module also includes a pad, which is located between the first circuit board and the probe, the signal needle is fixed on the connection hole of the first circuit board and electrically connected to the first circuit board, and the probe is disposed through the hollow part of the second circuit board.

[0011] Furthermore, the first circuit board and the second circuit board are electrically connected. An interface is provided at a non-middle position on the back of the first circuit board, and a signal transmission hole is provided at the bottom of the housing. The interface passes through the signal transmission hole, and the signal transmission hole limits the outer side of the interface to restrict the horizontal movement of the first circuit board inside the housing.

[0012] Furthermore, the housing includes a detachably connected top cover and a base, with the top cover and base forming a mounting cavity for mounting the circuit board, infrared temperature sensor, and distance sensor, and the detection hole is located on the top cover.

[0013] Furthermore, the detection module also includes a sensor cover, which is fixed to the bottom of the upper cover and at least covers the opening area of ​​the detection hole.

[0014] Furthermore, the side wall of the base has a guide protrusion in the vertical direction, and the side of the circuit board has a guide groove that cooperates with the guide protrusion.

[0015] This utility model also provides a hair styling device, including a controller and a detection module as described in any of the above embodiments, wherein the controller and the detection module are electrically connected.

[0016] The aforementioned hair styling equipment has a controller connected to a detection module that integrates an infrared temperature sensor and a distance sensor. This allows the device to detect both the surface temperature of the heating element and the distance between the device and the surface of the heating element. As a result, when using hair styling equipment with a detection module to control the temperature, both temperature and distance parameters can be referenced simultaneously. This helps to improve the accuracy of temperature control and further reduce the probability of hair damage from overheating. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 A top view and a cross-sectional view at position AA of the detection module provided by this utility model; Figure 2 An exploded view of the detection module provided by this utility model; Figure 3 for Figure 1 Another angle view of the cross-section at position AA; Figure 4 This is a schematic diagram illustrating the application of the detection module provided by this utility model.

[0019] In the diagram: 1. Outer shell; 11. Top cover; 111. Detection hole; 12. Base; 121. Guide protrusion; 122. Limiting protrusion; 2. Circuit board; 21. First circuit board; 211. Connection hole; 212. Interface; 22. Second circuit board; 221. Hollow part; 23. Connector; 24. Guide groove; 3. Infrared temperature sensor; 31. Probe; 32. Signal needle; 4. Distance sensor; 5. Pad; 6. Sensor cover. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In one embodiment, such as Figure 1-4 As shown, a detection module is provided, including: a housing 1, with a detection hole 111 on the top of the housing 1; a circuit board 2, which is fixed inside the housing 1; an infrared temperature sensor 3, which is fixed on the circuit board 2 and located inside the housing 1, with the receiving light path of the infrared temperature sensor 3 passing through the detection hole 111; and a distance sensor 4, which is fixed on the circuit board 2 and located inside the housing 1, with the receiving light path of the distance sensor 4 passing through the detection hole 111.

[0025] The aforementioned detection module integrates an infrared temperature sensor 3 and a distance sensor 4, enabling it to detect the distance between the surface of the heating element and the surface of the heating element at the same time. This allows hair styling equipment with the detection module to simultaneously reference both temperature and distance parameters during temperature control, improving the accuracy of temperature control and further reducing the probability of hair damage from overheating.

[0026] For illustrative purposes, the receiving optical path of the infrared temperature sensor 3 is as follows: Figure 1 and Figure 4 The G1 ray in the distance sensor 4 has the following light-receiving path: Figure 1 and Figure 4 G2 rays in the middle.

[0027] In one embodiment, reference Figure 1 The infrared temperature sensor 3 is located at the central axis of the housing 1, and the distance sensor 4 is located to the side of the infrared temperature sensor 3.

[0028] Specifically, under normal circumstances, the infrared temperature sensor 3 is larger in volume than the distance sensor 4, and the detection angle of the infrared temperature sensor 3 is smaller than that of the distance sensor 4. Placing the infrared temperature sensor 3 at the central axis of the housing 1 and the distance sensor 4 to the side of the infrared temperature sensor 3 is beneficial to improving the space utilization of the internal cavity of the housing 1, making the entire detection module smaller in volume; it is also beneficial to increase the overlapping detection area of ​​the infrared temperature sensor 3 and the distance sensor 4, thereby expanding the actual detection range of the detection module.

[0029] In one embodiment, the infrared temperature sensor 3 and the distance sensor 4, the one with a larger diameter, are located at the central axis L1 of the housing 1, and the other sensor is located to the side of the one with a smaller diameter.

[0030] Specifically, placing a sensor with a larger diameter at the central axis L1 of the housing 1, and another sensor to the side of the sensor with a smaller diameter, helps to improve the space utilization of the internal cavity of the housing 1, making the entire detection module smaller in size.

[0031] In one embodiment, the infrared temperature sensor 3 and the distance sensor 4 with a smaller detection angle are located at the central axis L1 of the housing 1, and the other sensor is located to the side of the sensor with the smaller detection angle.

[0032] Specifically, placing a sensor with a smaller detection angle at the central axis L1 of the housing 1, and another sensor to the side of the sensor with the smaller detection angle, helps to increase the overlapping detection area of ​​the infrared temperature sensor 3 and the distance sensor 4, thereby expanding the actual detection range of the detection module.

[0033] In one embodiment, reference Figure 1-3 The circuit board 2 includes a first circuit board 21 and a second circuit board 22 arranged at an interval between the upper and lower parts. The second circuit board 22 is located above the first circuit board 21, and the middle area of ​​the second circuit board 22 has a hollow part 221. The infrared temperature sensor 3 is fixed on the first circuit board 21 and is disposed through the hollow part 221 of the second circuit board 22. The distance sensor 4 is fixed on the second circuit board 22.

[0034] Specifically, since both the infrared temperature sensor 3 and the distance sensor 4 require corresponding circuit boards 2 to process signals, in order to save horizontal space, a larger circuit board 2 integrating the two functions was not used. Instead, the circuit board 2 was divided into a first circuit board 21 for processing the temperature signal collected by the infrared temperature sensor 3 and a second circuit board 22 for processing the distance signal collected by the distance sensor 4. The two circuit boards were arranged vertically and vertically. By setting a hollow part 221 in the middle area of ​​the second circuit board 22, the infrared temperature sensor 3 can pass through the second circuit board 22. Thus, the second circuit board 22 will not affect the light receiving path of the infrared temperature sensor 3. In addition, the internal space utilization of the housing 1 can be further improved, making the overall detection module smaller.

[0035] In one embodiment, reference Figure 1-2The circuit board 2 also includes a connector 23, which is located between the first circuit board 21 and the second circuit board 22 and is fixedly connected to both the first circuit board 21 and the second circuit board 22. The inner wall of the outer shell 1 is provided with a limiting protrusion 122. When the circuit board 2 is installed on the outer shell 1, the limiting protrusion 122 abuts against the upper surface of the second circuit board 22 to restrict the up and down movement of the first circuit board 21 and the second circuit board 22 inside the outer shell 1.

[0036] Specifically, the first circuit board 21 and the second circuit board 22 are fixed together by the connector 23. The movement of only one circuit board 2 is restricted, so the overall restriction can be completed. Furthermore, the inner wall of the outer shell 1 is provided with a limiting protrusion 122. When the circuit board 2 is installed in the outer shell 1, the limiting protrusion 122 can abut against the upper surface of the second circuit board 22 to restrict the up and down movement of the first circuit board 21 and the second circuit board 22 inside the outer shell 1.

[0037] In one embodiment, reference Figure 1-2 The infrared temperature sensor 3 includes a probe 31 and a signal needle 32; the detection module also includes a pad 5, which is located between the first circuit board 21 and the probe 31. The signal needle 32 is fixed on the connection hole 211 of the first circuit board 21 and electrically connected to the first circuit board 21. The probe 31 is disposed through the hollow part 221 of the second circuit board 22.

[0038] Specifically, when the signal pin 32 of the infrared temperature sensor 3 is connected to the connection hole 211 of the first circuit board 21, there will be a certain gap between the probe 31 and the first circuit board 21. A spacer 5 is provided between the first circuit board 21 and the probe 31 to improve the stability of the temperature sensor. In addition, the spacer 5 is a heat insulation component provided between the first circuit board 21 and the infrared temperature sensor 3, which can prevent the heat dissipated by the first circuit board 21 from affecting the temperature detected by the infrared temperature sensor 3.

[0039] In one embodiment, reference Figure 1 The first circuit board 21 and the second circuit board 22 are electrically connected. An interface 212 is provided at a non-middle position on the back of the first circuit board 21. A signal transmission hole is provided at the bottom of the housing 1. The interface 212 passes through the signal transmission hole, and the signal transmission hole limits the outer side of the interface 212 to restrict the horizontal movement of the first circuit board 21 inside the housing 1.

[0040] Specifically, by electrically connecting the first circuit board 21 and the second circuit board 22, it is possible to set an interface 212 for signal transmission on only one circuit board 2. The interface 212 is set on the first circuit board 21 located below, and is located in a non-central position on the back of the first circuit board 21. It can cooperate with the signal transmission hole at the bottom of the housing 1. The signal transmission hole limits the outer side of the interface 212, thereby restricting the horizontal movement of the first circuit board 21 inside the housing 1.

[0041] In one embodiment, to improve the disassembly and assembly efficiency of the detection module, refer to Figure 1-3 The housing 1 includes a detachably connected upper cover 11 and a base 12. The upper cover 11 and the base 12 form a mounting cavity for mounting the circuit board 2, the infrared temperature sensor 3 and the distance sensor 4. The detection hole 111 is located on the upper cover 11.

[0042] Specifically, the mounting cavity can be opened and closed by the detachable connection between the top cover 11 and the base 12, thereby facilitating the installation of the circuit board 2, the infrared temperature sensor 3, and the distance sensor 4.

[0043] In one embodiment, to prevent the infrared temperature sensor 3 and the distance sensor 4 from being affected by external factors, such as water stains or high-temperature gases, reference is made. Figure 1-3 The detection module also includes a sensor cover 6, which is fixed to the bottom of the upper cover 11 and at least covers the opening area of ​​the detection hole 111.

[0044] Specifically, the sensor cover 6 will not affect the light receiving path of the infrared temperature sensor 3 and the light receiving path of the distance sensor 4. For example, it can be a sheet material made of HDPE (high-density polyethylene).

[0045] In one embodiment, for ease of installation of circuit board 2, refer to Figure 2 The side wall of the base 12 has a guide protrusion 121 protruding in the vertical direction, and the side of the circuit board 2 has a guide groove 24 that cooperates with the guide protrusion 121.

[0046] This utility model also provides a hair styling device, including a controller and a detection module as described in any of the above embodiments, wherein the controller and the detection module are electrically connected.

[0047] The aforementioned hair styling equipment, whose controller is connected to a detection module that integrates an infrared temperature sensor 3 and a distance sensor 4, can detect the surface temperature of the heating element while simultaneously detecting the distance between the device and the surface of the heating element being tested. Thus, when using hair styling equipment with a detection module to control temperature, both temperature and distance parameters can be referenced simultaneously, which helps to improve the accuracy of temperature control and further reduce the probability of hair damage from overheating.

[0048] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0049] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A detection module, characterized in that, include: The outer casing (1) has a detection hole (111) on its top. Circuit board (2), said circuit board (2) is fixed inside the outer casing (1); Infrared temperature sensor (3), the infrared temperature sensor (3) is fixed on the circuit board (2) and located inside the housing (1), the receiving optical path (G1) of the infrared temperature sensor (3) passes through the detection hole (111). Distance sensor (4) is fixed on the circuit board (2) and located inside the housing (1). The light receiving path (G2) of the distance sensor (4) passes through the detection hole (111).

2. The detection module according to claim 1, characterized in that, The infrared temperature sensor (3) is located at the central axis (L1) of the housing (1), and the distance sensor (4) is located to the side of the infrared temperature sensor (3); or Of the infrared temperature sensor (3) and the distance sensor (4), the larger diameter sensor is located at the central axis (L1) of the housing (1), and the other sensor is located to the side of the smaller diameter sensor; or In the infrared temperature sensor (3) and the distance sensor (4), the sensor with the smaller detection angle is located at the central axis (L1) of the housing (1), and the other sensor is located to the side of the sensor with the smaller detection angle.

3. The detection module according to claim 2, characterized in that, The circuit board (2) includes a first circuit board (21) and a second circuit board (22) arranged at an upper and lower interval. The second circuit board (22) is located above the first circuit board (21), and the middle area of ​​the second circuit board (22) has a hollow part (221). The infrared temperature sensor (3) is fixed on the first circuit board (21) and passes through the hollow part (221) of the second circuit board (22); The distance sensor (4) is fixed on the second circuit board (22).

4. A detection module according to claim 3, characterized in that, The circuit board (2) further includes a connector (23), which is located between the first circuit board (21) and the second circuit board (22) and is fixedly connected to both the first circuit board (21) and the second circuit board (22). The inner wall of the outer shell (1) is provided with a limiting protrusion (122). When the circuit board (2) is installed on the outer shell (1), the limiting protrusion (122) abuts against the upper surface of the second circuit board (22) to restrict the up and down movement of the first circuit board (21) and the second circuit board (22) inside the outer shell (1).

5. A detection module according to claim 3, characterized in that, The infrared temperature sensor (3) includes a probe (31) and a signal needle (32); the detection module also includes a pad (5), which is located between the first circuit board (21) and the probe (31). The signal needle (32) is fixed on the connection hole (211) of the first circuit board (21) and electrically connected to the first circuit board (21). The probe (31) is disposed through the hollow part (221) of the second circuit board (22).

6. A detection module according to claim 3, characterized in that, The first circuit board (21) and the second circuit board (22) are electrically connected. An interface (212) is provided at a non-middle position on the back of the first circuit board (21). A signal transmission hole is provided at the bottom of the housing (1). The interface (212) passes through the signal transmission hole and the signal transmission hole limits the outer side of the interface (212) to restrict the horizontal movement of the first circuit board (21) inside the housing (1).

7. A detection module according to any one of claims 1-6, characterized in that, The housing (1) includes a detachably connected upper cover (11) and a base (12), and the upper cover (11) and the base (12) form a mounting cavity for mounting the circuit board (2), the infrared temperature sensor (3) and the distance sensor (4), and the detection hole (111) is located on the upper cover (11).

8. A detection module according to claim 7, characterized in that, The detection module also includes a sensor cover (6), which is fixed to the bottom of the upper cover (11) and at least covers the opening area of ​​the detection hole (111).

9. A detection module according to claim 7, characterized in that, The side wall of the base (12) is provided with a guide protrusion (121) in the vertical direction, and the side of the circuit board (2) is provided with a guide groove (24) that cooperates with the guide protrusion (121).

10. A hair styling device, characterized in that, It includes a controller and a detection module as described in any one of claims 1-9, wherein the controller and the detection module are electrically connected.

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