Pressure and temperature sensor capable of positioning thermistor

Abstract

The utility model relates to the technical field of vehicle environment measurement, in particular to a pressure and temperature sensor capable of positioning a thermistor, which comprises a shell provided with an assembly end, a wiring end and a detection end. A printed circuit board is arranged in the shell, and a metal terminal, a thermistor and a pressure chip are connected to the printed circuit board; the printed circuit board is provided with a support, the support comprises a base and a clamping jaw, the outer side, close to the upper end, of the clamping jaw is provided with a convex rib, and the clamping jaw is extruded and matched in the detection end through the convex rib; the arrangement of the support can protect the pressure chip and the thermistor at the tin soldering position on the printed circuit board, and also can fix the thermistor buckled on the clamping jaw, thereby reducing or even avoiding the swinging of the thermistor in the detection end, improving the reliability of tin soldering of the thermistor pin on the printed circuit board, and improving the reliability of the printed circuit board. And the reliability of the pressure and temperature sensor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle environment measurement, in particular to a pressure temperature sensor capable of positioning a thermistor. Background Art

[0002] In the measurement of the vehicle's application environment, the pressure temperature sensor senses the temperature change of the vehicle environment through the thermistor and outputs the corresponding electrical signal change. In the pressure temperature sensor used in the prior art, the thermistor is only soldered to the printed circuit board through the pins, and the thermistor probe has no contact with the housing of the pressure temperature sensor. During use, the thermistor will swing with the movement of the vehicle, causing fatigue fracture of the thermistor pins, affecting the reliability of the product. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a pressure temperature sensor with a positionable thermistor, so as to solve the problem of unreliable thermistor connection in the pressure temperature sensor used in the prior art.

[0004] To achieve the above-mentioned object and other related objects, the utility model provides a pressure temperature sensor with a positionable thermistor, comprising a housing, wherein the housing has an assembly end, a wiring end and a detection end;

[0005] The housing is provided with a printed circuit board, the printed circuit board is connected with a metal terminal, a thermistor and a pressure chip, the metal terminal is inserted into the wiring terminal, and the thermistor is inserted into the detection terminal;

[0006] The printed circuit board is provided with a bracket, the bracket includes a base and a claw formed on the upper end of the base, the base is simultaneously arranged around the outside of the pressure chip and the thermistor, and the claw extends to the detection end to buckle the pin of the thermistor;

[0007] The outer side of the clamping claw close to the upper end is provided with a convex rib, and the clamping claw is squeezed and fitted in the detection end through the convex rib, so as to form a swing positioning for the thermistor buckled on the clamping claw.

[0008] In an embodiment of the present invention, the bracket is made of a plastic material with elastic deformation capability.

[0009] In an embodiment of the present invention, two clamping claws are provided, and a compressible gap exists between the two clamping claws.

[0010] In one embodiment of the present invention, a bracket foot is provided at the lower end of the base, a through hole is provided on the printed circuit board, and the bracket foot is inserted into the through hole of the printed circuit board.

[0011] In an embodiment of the present invention, a hollow groove is provided at the end of the detection end, and the probe of the thermistor extends into the hollow groove.

[0012] In one embodiment of the utility model, the upper and lower sides of the wiring terminal are provided with limiting piles which are narrow in front and wide in the back, and the wiring terminal is limited by the limiting piles when connecting to the outside.

[0013] As described above, the pressure temperature sensor with positionable thermistor of the utility model has the following beneficial effects:

[0014] The utility model provides a bracket composed of a base and a clamping claw, wherein the base is arranged around the outer sides of the pressure chip and the thermistor to protect the soldering positions of the pressure chip and the thermistor on the printed circuit board; the clamping claw is provided with a convex rib, which can cooperate with the inner wall of the detection end to squeeze and fix the clamping claw, thereby fixing the thermistor buckled on the clamping claw, reducing or even avoiding the swing of the thermistor in the detection end, improving the reliability of the soldering of the thermistor pins on the printed circuit board, and thereby improving the reliability of the pressure temperature sensor in environmental measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 Shown is a schematic diagram of the exploded structure of the utility model.

[0017] Figure 3 It shows an enlarged structural diagram of the bracket used in conjunction with the thermistor in the present invention.

[0018] Figure 4 An enlarged view of the local structure of the detection end of the housing and the extruded bracket is shown.

[0019] Component number description

[0020] Shell 1; assembly end 11; connection end 12; detection end 13; limit pile 14; printed circuit board 2; metal terminal 3; thermistor 4; pressure chip 5; bracket 6; base 61; claw 62; bracket foot 63; convex rib 64. DETAILED DESCRIPTION

[0021] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] See also Figures 1 to 4It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0023] See also Figure 1-4 The utility model provides a pressure temperature sensor with a positionable thermistor, comprising a housing 1, the housing 1 having an assembly end 11, a wiring end 12 and a detection end 13; a printed circuit board 2 is arranged in the housing 1, a metal terminal 3, a thermistor 4 and a pressure chip 5 are connected to the printed circuit board 2, the metal terminal 3 is inserted into the wiring end 12, and the upper and lower sides of the wiring end 12 are provided with a limit pile 14 which is narrow in front and wide in the back, and the wiring end 12 is limited by the limit pile 14 when connecting to the outside. The thermistor 4 is inserted into the detection end 13, and a hollow groove is arranged at the end of the detection end 13, and the probe of the thermistor 4 extends into the hollow groove. When in use, the housing 1 is connected to the outside through the wiring end 12 and supplies power to the printed circuit board 2 through the metal terminal 3, and then supplies power to the thermistor 4 and the pressure chip 5 connected to the printed circuit board 2; when the temperature changes, the resistance or potential inside the thermistor 4 will also change, thereby causing a change in the output electrical signal, and the change in this electrical signal can be read and processed by the pressure chip 5 to indicate the current tested temperature.

[0024] The printed circuit board 2 is provided with a bracket 6, which is made of a plastic material with elastic deformation ability. The bracket 6 includes a base 61 and a claw 62 formed on the upper end of the base 61. The claw 62 is provided with two claws, and there is an extrudable gap between the two claws 62; the base 61 is also arranged around the outside of the pressure chip 5 and the thermistor 4 to protect the soldering position of the pressure chip 5 and the thermistor 4 on the printed circuit board 2; the claw 62 extends to the pin of the thermistor 4 in the detection end 13; the lower end of the base 61 is provided with a bracket foot 63, and the printed circuit board 2 is provided with a through hole, and the bracket foot 63 is connected to the through hole of the printed circuit board 2. The bracket 6 is simple to assemble relative to the printed circuit board 2 and convenient to use. A convex rib 64 is provided on the outer side of the clamping claw 62 near the upper end. The clamping claw 62 is squeezed and fitted in the detection end 13 through the convex rib 64, forming a swing positioning for the thermistor 4 buckled on the clamping claw 62, thereby improving the reliability of soldering the pins of the thermistor 4 on the printed circuit board 2, thereby improving the environmental measurement effect of the pressure and temperature sensor.

[0025] In summary, the pressure temperature sensor with a positionable thermistor provided by the utility model, the setting of the bracket 6 can protect the soldering position of the pressure chip 5 and the thermistor 4 on the printed circuit board 2, and can also fix the thermistor 4 buckled on the claw 62, reduce or even avoid the swing of the thermistor 4 in the detection end 13, improve the reliability of the thermistor pin soldering on the printed circuit board, and then improve the reliability of the pressure temperature sensor used in environmental measurement. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0026] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A pressure temperature sensor with a positionable thermistor, comprising a housing (1), wherein the housing (1) has an assembly end (11), a wiring end (12) and a detection end (13); The housing (1) is provided with a printed circuit board (2), the printed circuit board (2) is connected with a metal terminal (3), a thermistor (4) and a pressure chip (5), the metal terminal (3) is inserted into a wiring terminal (12), and the thermistor (4) is inserted into a detection terminal (13); Features: The printed circuit board (2) is provided with a bracket (6), the bracket (6) comprising a base (61) and a claw (62) formed on the upper end of the base (61), the base (61) is simultaneously arranged around the outer sides of the pressure chip (5) and the thermistor (4), and the claw (62) extends to the detection end (13) to buckle the pin of the thermistor (4); The outer side of the clamping claw (62) near the upper end is provided with a convex rib (64), and the clamping claw (62) is squeezed and fitted in the detection end (13) through the convex rib (64), so as to form a swing positioning for the thermistor (4) buckled on the clamping claw (62).

2. The pressure and temperature sensor with a positionable thermistor according to claim 1, characterized in that: The bracket (6) is made of a plastic material with elastic deformation capability.

3. The pressure and temperature sensor with a positionable thermistor according to claim 2, characterized in that: The two clamping claws (62) are provided, and a compressible gap exists between the two clamping claws (62).

4. The pressure and temperature sensor with a positionable thermistor according to claim 1, characterized in that: A bracket foot (63) is provided at the lower end of the base (61), a through hole is provided on the printed circuit board (2), and the bracket foot (63) is inserted into the through hole of the printed circuit board (2).

5. The pressure and temperature sensor with a positionable thermistor according to claim 1, characterized in that: A hollow groove is provided at the end of the detection end (13), and a probe of the thermistor (4) extends into the hollow groove.

6. The pressure and temperature sensor with a positionable thermistor according to claim 1, characterized in that: The upper and lower sides of the wiring terminal (12) are both provided with limiting piles (14) which are narrow in front and wide in the back. When the wiring terminal (12) is connected to an external connection, the limiting piles (14) are used to limit the position.

Images