Self-suction temperature sensor

Abstract

A self-suction type temperature sensor comprises a shell, a thermistor, a coil, a circuit board and a self-suction assembly, the shell is provided with a cavity, a main air opening and an auxiliary air opening, the main air opening and the auxiliary air opening are communicated with the cavity, and the self-suction assembly comprises a rotating shaft rotationally connected to the cavity and a fan blade ring connected to the rotating shaft. The shell is provided with a coil driving the fan blade ring to rotate and a circuit board used for controlling the power-on state of the coil, the fan blade ring is used for guiding airflow to flow between the main air opening and the auxiliary air opening, the thermosensitive resistor is connected to the shell and located at the main air opening, and the thermistor is electrically connected to the circuit board. According to the scheme, the self-suction assembly is arranged in the cavity of the shell, the circuit board controls the power-on state of the coil so that the fan blade ring can be driven by the coil to rotate, then external airflow can flow between the main air opening and the auxiliary air opening of the shell under the action of the fan blade ring, and the thermistor located at the main air opening can accurately detect the environment temperature; and subsequent adjustment of a temperature control system is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of temperature sensor, more particularly to a self -suction temperature sensor. BACKGROUND

[0002] In recent years, with the continuous transformation of the automotive industry towards intelligent, the requirement of the temperature control system in the car is improving. In order to accurately adjust the temperature in the car, the temperature in the car needs to be measured accurately.

[0003] However, due to the relatively closed space in the car, the cavity circulation is not smooth, which brings certain challenge to the measurement process of the temperature sensor. The current temperature sensor used in the car often has the problem of insufficient measurement accuracy, which cannot realize accurate measurement of the temperature in the car, and affects the automatic adjustment function of the temperature control system. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem of insufficient measurement accuracy of the temperature sensor in the prior art when applied in the car due to the poor cavity circulation.

[0005] In order to solve the above problems, the utility model provides a self -suction temperature sensor, which comprises a shell, a thermistor, a coil, a circuit board and a self -suction assembly, the shell is provided with a cavity, and the main air port and the auxiliary air port are respectively communicated to the cavity, the self -suction assembly comprises a rotating shaft rotatingly connected to the cavity and a fan ring connected to the rotating shaft, the shell is provided with the coil for driving the fan ring to rotate and the circuit board for controlling the power -on state of the coil, the fan ring is used for guiding the airflow to flow between the main air port and the auxiliary air port, the thermistor is connected to the shell and located in the main air port, and the thermistor is electrically connected to the circuit board.

[0006] Compared with the prior art, the above scheme sets the self -suction assembly in the cavity of the shell, the circuit board controls the power -on state of the coil, so that the fan ring can be driven to rotate by the coil, and then the airflow of the outside can flow between the main air port and the auxiliary air port of the shell under the action of the fan ring, so that the thermistor located in the main air port can accurately detect the ambient temperature, which is convenient for subsequent temperature control system adjustment.

[0007] In an improved scheme, the lower part of the cavity is provided with a base, the main air port is located in the upper part of the cavity, the auxiliary air port is located in the side of the cavity, the lower end of the rotating shaft is rotatingly connected to the base and the upper end is rotatingly connected to the shell, so that the rotating shaft can stably rotate with the vertical as the axis, and the fan ring on the rotating shaft can efficiently guide the airflow to flow between the main air port and the auxiliary air port.

[0008] In an improved scheme, the middle part of the upper side of the base is provided with a sleeve with an upper end opening, the inner peripheral wall of the sleeve is provided with a bearing, the upper end opening of the sleeve is provided with an annular cover cap for fastening the bearing, and the lower end of the rotating shaft is rotatably inserted into the bearing, so as to improve the rotating stability and service life of the rotating shaft through the bearing.

[0009] In an improved scheme, the bottom of the sleeve is provided with a gasket, and the bottom end of the rotating shaft abuts against the gasket, so as to support the bottom end of the rotating shaft through the gasket, realize better axial positioning of the rotating shaft, and avoid the wear problem of the bottom end of the sleeve.

[0010] In an improved scheme, a gasket is arranged between the bearing and the cover cap, so as to realize the axial positioning of the rotating shaft through the gasket, and reduce the wear between the bearing and the cover cap.

[0011] In an improved scheme, the upper side of the fan ring is provided with a plurality of blades arranged in the circumferential direction, the lower side of the fan ring is provided with a plurality of magnets arranged in the circumferential direction, and the coil is arranged on the base and opposite to the lower side of the fan ring, so that the changing magnetic field generated after the coil is energized can drive the rotation of the fan ring.

[0012] In an improved scheme, the lower part of the fan ring is embedded with an iron sheet, the lower side of the fan ring is provided with a plurality of assembly holes arranged in the circumferential direction, the assembly holes all extend to the iron sheet, and the assembly holes correspond to the magnets one by one for embedding the magnets, so that the assembly is simple and convenient.

[0013] In an improved scheme, the circuit board is arranged on the lower side of the base, so that the layout is more reasonable.

[0014] In an improved scheme, the shell is provided with a sponge ring arranged around the main air port, so as to reduce the abnormal sound problem after assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole schematic diagram of a self-suction temperature sensor a;

[0016] Fig. 2 It is a whole schematic diagram of a self-suction temperature sensor b;

[0017] Fig. 3 It is a cross-sectional schematic diagram of a self-suction temperature sensor.

[0018] BRIEF DESCRIPTION OF DRAWINGS,

[0019] 1, shell; 11, cavity; 12, main air port; 13, auxiliary air port; 14, base; 141, sleeve; 142, bearing; 143, cap; 144, gasket; 145, washer; 2, thermistor; 3, coil; 4, circuit board; 5, rotating shaft; 6, fan ring; 61, blade; 62, magnet; 63, assembly hole; 64, iron sheet; 7, sponge ring. DETAILED DESCRIPTION

[0020] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed to adapt to specific application occasions.

[0021] In the description of the following embodiments, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0022] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0023] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0024] Please refer to Figs. 1-3 The embodiment of the utility model provides a kind of self-suction temperature sensor, including shell 1, thermistor 2, coil 3, circuit board 4 and self-suction component, shell 1 is equipped with cavity 11, and main air port 12 and auxiliary air port 13 respectively communicated to cavity 11, self-suction component includes rotating shaft 5 rotationally connected in cavity 11 and fan ring 6 connected to rotating shaft 5, shell 1 is equipped with coil 3 for driving fan ring 6 rotation and circuit board 4 for controlling the energization state of coil 3, fan ring 6 is used to guide airflow to flow between main air port 12 and auxiliary air port 13, thermistor 2 is connected to shell 1 and is in main air port 12, thermistor 2 is electrically connected to circuit board 4.

[0025] Compared with the prior art, the scheme sets the self-suction assembly in the cavity 11 of the shell 1, the circuit board 4 controls the energization state of the coil 3, so that the fan blade ring 6 can be driven to rotate by the coil 3, and then the airflow in the external environment can flow between the main air port 12 and the auxiliary air port 13 of the shell 1 under the action of the fan blade ring 6, so that the thermistor 2 located at the main air port 12 can accurately detect the ambient temperature, facilitating subsequent temperature control system adjustment.

[0026] In an improved scheme, the lower part of the cavity 11 is provided with a base 14, the main air port 12 is located at the upper part of the cavity 11, the auxiliary air port 13 is located at the side of the cavity 11, the lower end of the rotating shaft 5 is rotatably connected to the base 14 and the upper end is rotatably connected to the shell 1, so that the rotating shaft 5 can stably rotate with the vertical as the axis, and the fan blade ring 6 on the rotating shaft 5 can efficiently guide the airflow to flow between the main air port 12 and the auxiliary air port 13.

[0027] More specifically, in the present embodiment, the main air port 12 is a hole and is arranged in the middle of the upper end surface of the shell 1, and the auxiliary air port 13 is a through slot structure and is a plurality of, and the plurality of auxiliary air ports 13 are distributed along the circumference of the shell 1, so that the flow path of the airflow is more reasonable.

[0028] In an improved scheme, the upper side of the base 14 is provided with a sleeve 141 with an upper end opening, the inner circumferential wall of the sleeve 141 is provided with a bearing 142, the upper end opening of the sleeve 141 is provided with an annular cover cap 143 for fastening the bearing 142, and the lower end of the rotating shaft 5 is rotatably inserted into the bearing 142, so as to improve the rotation stability and service life of the rotating shaft 5 through the bearing 142.

[0029] In an improved scheme, the bottom of the sleeve 141 is provided with a gasket 144, and the bottom end of the rotating shaft 5 abuts against the gasket 144, so as to support the bottom end of the rotating shaft 5 through the gasket 144, realize better axial positioning of the rotating shaft 5, and the gasket 144 is more wear-resistant, which can avoid the wear problem of the bottom end of the sleeve 141.

[0030] In an improved scheme, a gasket 145 is arranged between the bearing 142 and the cover cap 143, so as to realize axial positioning of the rotating shaft 5 through the gasket 145, and the gasket 145 is more wear-resistant, which can reduce the wear between the bearing 142 and the cover cap 143.

[0031] In the present embodiment, the gasket 144 is preferably a graphite gasket 144, and the gasket 145 is preferably a graphite gasket 145, so as to have better wear resistance. The bearing 142 is preferably an oil-containing bearing 142, so as to reduce the friction between the bearing 142 and the rotating shaft 5.

[0032] In an improved scheme, the upper side of the fan ring 6 is provided with a plurality of blades 61 arranged in the circumferential direction, the lower side of the fan ring 6 is provided with a plurality of magnets 62 arranged in the circumferential direction, and the coil 3 is mounted on the base 14 and arranged opposite to the lower side of the fan ring 6, so that the changing magnetic field generated after the coil 3 is electrified can drive the rotation of the fan ring 6.

[0033] In an improved scheme, the lower part of the fan ring 6 is embedded with an iron sheet 64, the lower side of the fan ring 6 is provided with a plurality of assembly holes 63 arranged in the circumferential direction, the assembly holes 63 all extend to the iron sheet 64, the assembly holes 63 correspond to the magnets 62 one by one for the magnets 62 to be embedded, and the assembly is simple and convenient. It should be noted that the fan ring 6 is preferably connected with the iron sheet 64 and the rotating shaft 5 by the way of injection molding.

[0034] In an improved scheme, the circuit board 4 is mounted on the lower side of the base 14, so that the layout is more reasonable. The circuit board 4 is electrically connected with the coil 3 through the pins, and is electrically connected with the thermistor 2 through other pins.

[0035] In an improved scheme, the shell 1 is provided with a sponge ring 7 arranged around the main air inlet 12, so as to reduce the abnormal sound problem after assembly.

[0036] It should be noted that, in the description of the present application, the terms indicating the direction or positional relationship such as "inner", "outer" and the like are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative positional relationship, movement condition and the like between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0037] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific example" or "some examples" and the like means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0038] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed by the present application can be easily conceived by the person skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A self-priming temperature sensor characterized by, The utility model relates to a self-suction fan, including shell (1), thermistor (2), coil (3), circuit board (4) and self-suction assembly, the shell (1) is set up with cavity (11) and the main air port (12) and the side air port (13) that respectively communicate to cavity (11), the self-suction assembly includes the pivot (5) of rotation connection in cavity (11) and the fan ring (6) of connection in pivot (5), the shell (1) is equipped with the coil (3) of drive the rotation of fan ring (6) and the circuit board (4) for controlling the energization state of coil (3), the fan ring (6) is used for guiding airflow to flow between main air port (12) and side air port (13), the thermistor is connected to shell (1) and is at main air port (12), the thermistor (2) is electrically connected to circuit board (4).

2. The self-priming temperature sensor of claim 1, wherein, The lower part of the cavity (11) is provided with a base (14), the main air port (12) is located in the upper part of the cavity (11), the side air port (13) is located in the side of the cavity (11), the lower end of the pivot (5) is rotatably connected to the base (14) and the upper end is rotatably connected to the shell (1).

3. The self-priming temperature sensor of claim 2, wherein, The upper side of the base (14) is provided with a sleeve (141) with an open upper end, the inner peripheral wall of the sleeve (141) is provided with a bearing (142), the open upper end of the sleeve (141) is provided with an annular cover cap (143) for fastening the bearing (142), the lower end of the pivot (5) is rotatably inserted into the bearing (142).

4. The self-priming temperature sensor of claim 3, wherein, The bottom of the sleeve (141) is provided with a gasket (144), and the bottom end of the pivot (5) abuts against the gasket (144).

5. The self-priming temperature sensor according to claim 3 or 4, characterized in that A gasket (145) is arranged between the bearing (142) and the cover cap (143).

6. The self-priming temperature sensor according to claim 2 or 3, wherein The upper side of the fan ring (6) is provided with a plurality of blades (61) arranged circumferentially, the lower side of the fan ring (6) is provided with a plurality of magnets (62) arranged circumferentially, and the coil (3) is mounted on the base (14) and arranged opposite to the lower side of the fan ring (6).

7. The self-priming temperature sensor of claim 6, wherein, An iron sheet (64) is embedded in the lower part of the fan ring (6), a plurality of assembly holes (63) are formed in the lower side of the fan ring (6) in a circumferential direction, the assembly holes (63) all extend to the iron sheet (64), and the assembly holes (63) correspond to the magnets (62) one by one for embedding the magnets (62).

8. The self-priming temperature sensor of claim 2, wherein, The circuit board (4) is mounted on the lower side of the base (14).

9. The self-priming temperature sensor of claim 2, wherein, The shell (1) is provided with a sponge ring (7) arranged around the main air port (12).

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