Pressure sensor and pressure detection device

Abstract

The utility model belongs to the technical field of pressure detection equipment, and particularly discloses a pressure sensor and a pressure detection device. Wherein the pressure sensor comprises a base, an inductive head is arranged on the base, and a medium channel is arranged on the base; the fixing assembly is arranged on the base, and the fixing assembly comprises a chip fixing structure and a terminal fixing structure; the chip is arranged in the fixing assembly through a chip fixing structure; one end of the terminal is arranged in the fixing assembly through a terminal fixing structure, and the other end of the terminal penetrates out of the fixing assembly. Compared with the prior art, the pressure sensor has the advantages that the chip fixing structure and the terminal fixing structure are more compact after respectively fixing the chip and the terminal, the overall size of the pressure sensor is smaller, miniaturization is realized, and the pressure sensor is convenient to install in a narrow environment.

Description

Technical Field

[0001] This utility model relates to the field of pressure detection equipment technology, and in particular to a pressure sensor and pressure detection device. Background Technology

[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to certain rules. Pressure sensors typically consist of a pressure-sensitive element and a signal processing unit. These signals can be transmitted to automated control equipment to achieve automated / unattended operation and ensure safe operation.

[0003] In existing technologies, hydraulic sensors are widely used in fields such as engineering machinery, shipbuilding, petrochemicals, and automotive braking systems. Their main characteristics are a large pressure range, especially high instantaneous overload pressure, often reaching tens of megapascals, and requirements for the sensor itself to be small in size, lightweight, and highly stable. Currently used hydraulic sensors, due to the support, positioning, and mounting structure of the internal chip, result in a bulky overall structure and large size, hindering miniaturization, weight reduction, and installation. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a pressure sensor and pressure detection device to solve the problem of bulky structure of hydraulic sensors in the prior art.

[0005] To achieve the above and other related objectives, this utility model provides a pressure sensor, comprising:

[0006] A base, on which a sensing head is provided, and a medium channel is provided on the base;

[0007] A fixing component is disposed on the base, the fixing component including a chip fixing structure and a terminal fixing structure;

[0008] A chip, wherein the chip is disposed within the fixing assembly via a chip fixing structure;

[0009] A terminal, one end of which is disposed within the fixing assembly via the terminal fixing structure, and the other end of which protrudes from the fixing assembly.

[0010] Optionally, the sensing head is provided with a receiving cavity, which is in communication with the medium channel.

[0011] Optionally, the chip includes a first chip and a second chip, the sensing head has a mounting surface, the first chip is disposed on the mounting surface, and the first chip is connected to the second chip.

[0012] Optionally, the chip fixing structure includes a support frame and a mounting plate. The support frame is disposed on the base, the mounting plate is disposed on the support frame, the second chip is disposed on the mounting plate, and a connecting line is provided between the first chip and the second chip.

[0013] Optionally, the terminal fixing structure includes a pin header and a positioning frame. The pin header is disposed on the support frame, the positioning frame is disposed on the support frame, the terminal is fixedly connected to the pin header, and the terminal extends through the positioning frame.

[0014] Optionally, the terminal is provided with at least one, and the pin header is provided corresponding to the terminal.

[0015] Optionally, the positioning frame has a limiting hole corresponding to the terminal, and the terminal is disposed through the positioning frame.

[0016] Optionally, the fixing assembly further includes a housing disposed on the base, the chip fixing structure and the terminal fixing structure disposed within the housing, the sensing head located within the housing, and the positioning frame abutting against the inner top of the housing.

[0017] This invention also provides a pressure detection device, which includes the pressure sensor described above.

[0018] Optionally, it also includes an adapter, which includes a connector end, a connecting pipe and a medium end arranged in sequence, the medium end being used to introduce a medium, and the connector end being detachably connected to the pressure sensor.

[0019] As described above, the pressure sensor and pressure detection device proposed in this utility model have the following beneficial effects:

[0020] In this invention, the base provides an installation environment for the fixing component, allowing the fixing component to be installed on the base. The chip is positioned and fixed by the chip fixing structure in the fixing component, and the terminal is positioned and fixed by the terminal fixing structure. Compared with the prior art, the chip fixing structure and terminal fixing structure of this invention are more compact after fixing the chip and the terminal respectively, and the overall size of the pressure sensor is smaller, making it easier to install in narrow environments. Attached Figure Description

[0021] Figure 1 The diagram shown is an exploded view of a pressure sensor according to an embodiment of this utility model.

[0022] Figure 2 This is a front view of a pressure sensor according to an embodiment of the present invention;

[0023] Figure 3The image shown is a cross-sectional view of a pressure sensor according to an embodiment of the present invention.

[0024] Figure 4 The diagram shown is a structural schematic of a pressure detection device in one embodiment of the present invention.

[0025] Figure 5 The diagram shown is a structural schematic of an adapter in one embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] Pressure sensor 1, base 101, sensing head 102, mounting surface 103, accommodating cavity 1031, medium channel 104, sealing ring 105, first chip 106, housing 107, support frame 108, pin header 109, connecting wire 110, mounting plate 111, second chip 112, positioning frame 113, terminal 114, adapter 2, connector end 201, connecting pipe 202, medium end 203. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0029] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components related to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex. The structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0030] like Figures 1-5As shown, this utility model proposes a pressure sensor 1 and a pressure detection device.

[0031] In one exemplary embodiment, the pressure sensor 1 includes:

[0032] The base 101 is provided with a sensor head 102 and a medium channel 104.

[0033] A fixing component is disposed on the base 101, and the fixing component includes a chip fixing structure and a terminal fixing structure;

[0034] The chip is mounted in a fixed component through a chip fixing structure;

[0035] Terminal 114, one end of terminal 114 is disposed within the fixing assembly via a terminal fixing structure, and the other end protrudes from the fixing assembly.

[0036] In this embodiment, the base 101 provides an installation environment for the fixing component, allowing the fixing component to be installed on the base 101. The chip is positioned and fixed by the chip fixing structure in the fixing component, and the terminal 114 is positioned and fixed by the terminal fixing structure. Compared with the prior art, the chip fixing structure and terminal fixing structure of this utility model are more compact after fixing the chip and terminal 114 respectively, and the overall size of the pressure sensor 1 is smaller, making it easier to install in narrow environments.

[0037] In an exemplary embodiment, the sensing head 102 is provided with a receiving cavity 1031, which is connected to the medium channel 104.

[0038] In this embodiment, the sensing head 102 is mainly used to sense pressure changes. By opening a accommodating cavity 1031 inside the sensing head 102, a structure similar to a sensing diaphragm is formed on the sidewall of the sensing head 102. At the same time, by setting the accommodating cavity 1031 inside the sensing head 102, the accommodating cavity 1031 is connected to the medium channel 104. When the medium enters the accommodating cavity 1031 of the sensing head 102 through the medium channel 104, the structure similar to a sensing diaphragm formed in the accommodating cavity 1031 will undergo a certain deformation due to the pressure change inside the accommodating cavity 1031. The chip senses the deformation and converts it into an electrical signal for output.

[0039] For example, in this embodiment, the processing method of the sensing head 102 is as follows: a groove is made in one of the side walls of the sensing head 102 to make it communicate with the medium channel 104, and the side wall of the sensing head 102 is made to reach the required thickness so that the side wall of the sensing head 102 can generate corresponding deformation. A sealing block is then welded in the opening direction of the groove to prevent the medium in the accommodating cavity 1031 from leaking into the sensor.

[0040] For example, in this embodiment, the sensing head 102 and the base 101 are integrally formed, and the bottom of the sensing head 102 is provided with a threaded head to facilitate connection with the adapter 2.

[0041] It is worth noting that a sealing ring 105 is provided at the bottom of the base 101 to prevent media leakage after the base 101 is connected to the adapter 2.

[0042] The chip includes a first chip 106 and a second chip 112. The sensor head 102 has a mounting surface 103. The first chip 106 is disposed on the mounting surface 103 and is connected to the second chip 112.

[0043] In this embodiment, the mounting surface 103 is the outer wall of a structure similar to a sensing diaphragm. By placing the first chip 106 on the mounting surface 103, the medium pressure in the accommodating cavity 1031 can be sensed by the deformation of the side wall of the sensing head 102, and converted into an electrical signal for output.

[0044] For example, in this embodiment, the first chip 106 is a glass micro-fused chip, which is fixed on the mounting surface 103 by sintering, thereby ensuring the effective fixation of the first chip 106 and preventing it from falling off.

[0045] It is worth noting that in this embodiment, the glass micro-fusion chip has high precision, non-contact operation, high pressure resistance, and a longer service life.

[0046] It should also be noted that other chips capable of achieving the same function can be used in this embodiment.

[0047] In an exemplary embodiment, the chip fixing structure includes a support frame 108 and a mounting plate 111. The support frame 108 is disposed on the base 101, the mounting plate 111 is disposed on the support frame 108, the second chip 112 is disposed on the mounting plate 111, and a connecting line 110 is provided between the first chip 106 and the second chip 112.

[0048] In this embodiment, the chip fixing structure adopts a support frame 108 and a mounting plate 111. Multiple steps are provided on the top of the base 101. The support frame 108 is installed on one of the steps and is bonded to the base 101 by adhesive. The second chip 112 is set on the mounting plate 111, realizing further conversion of electrical signals. The second chip 112 is electrically connected to the terminal 114, and the second chip 112 can transmit the processed data through the terminal 114.

[0049] For example, in this embodiment, the support frame 108 is cylindrical in shape and has a vertical plane. The mounting plate 111 is L-shaped in shape. The vertical surface of the mounting plate 111 matches the vertical plane on the support frame 108. The horizontal surface of the mounting plate 111 is in contact with the end face of the support frame 108. The horizontal surface is an arc plane, so that its shape is the same as that of the support frame 108, which is beneficial for installation.

[0050] For example, the horizontal surface of the mounting plate 111 is provided with a plurality of positioning holes, which can be connected to the pin header 109 by plugging in, thereby achieving the fixation of the mounting plate 111.

[0051] It is worth noting that in this embodiment, the second chip 112 is an ASIC chip, which has the advantages of small size and high integration, and can realize fast data processing. In this embodiment, the second chip 112 is installed on the vertical surface of the mounting plate 111 by adhesive bonding.

[0052] In an exemplary embodiment, the terminal fixing structure includes a pin header 109 and a positioning frame 113. The pin header 109 is disposed on a support frame 108, the positioning frame 113 is disposed on the support frame 108, and the terminal 114 is fixedly connected to the pin header 109 and extends through the positioning frame 113.

[0053] In this embodiment, the pin header 109 is fixed to the terminal 114 by welding, thus fixing the terminal 114. The positioning bracket 113 is used to enhance the limiting effect on the terminal 114, ensuring the stability of the pressure sensor 1 during use and facilitating stable data transmission.

[0054] For example, in this embodiment, the pin header 109 is fixed to the top of the support frame 108 by in-line injection molding, passes through the mounting plate 111 and is welded to the bottom of the terminal 114.

[0055] For example, at least one terminal 114 is provided, and pins 109 are correspondingly provided with terminals 114. In this embodiment, there are three pins 109 and three terminals 114. Correspondingly, there are also three positioning holes.

[0056] For example, in this embodiment, a limiting hole is provided on the positioning frame 113, and the terminal 114 passes through the limiting hole and its end extends out of the positioning frame 113.

[0057] In one exemplary embodiment, the fixing assembly further includes a housing 107 disposed on the base 101, a chip fixing structure and a terminal fixing structure disposed within the housing 107, a sensor head 102 located within the housing 107, and a positioning frame 113 abutting against the inner top of the housing 107.

[0058] In this embodiment, the housing 107 can isolate the chip and other fixing components from the external environment, thus achieving a protective function. At the same time, after the chip fixing structure and terminal fixing structure are installed, the positioning frame 113 is abutted against the inner top of the housing 107 to achieve a compact structure and reduce the overall size of the pressure sensor 1.

[0059] It is worth noting that in this embodiment, the housing 107 is installed on the step formed on the top of the base 101 by adhesive bonding.

[0060] This utility model also proposes a pressure detection device, which includes the pressure sensor 1 described above.

[0061] In one exemplary embodiment, the pressure detection device further includes an adapter 2 connected to the pressure sensor 1. The adapter 2 includes a connector end 201, a connecting pipe 202, and a medium end 203 arranged sequentially. The medium end 203 is used to introduce a medium, and the connector end 201 is detachably connected to the pressure sensor 1. The medium end 203 is connected to the pressure medium, and the pressure medium can ultimately enter the medium channel 104 and the accommodating cavity 1031 from the connector end 201 through the medium end 203 and the connecting pipe 202, thereby realizing pressure detection through the chip.

[0062] For example, the connecting pipe is a flexible tube, which can be made of metal or plastic. The length of the connecting pipe 202 can be determined according to the installation position of the pressure sensor 1.

[0063] It is worth noting that existing pressure sensors generally use an interference fit to ensure the load-bearing capacity and sealing at the interface. This type of installation often requires a destructive method to remove the sensor from the medium container later. When the sensor malfunctions during use, it cannot be replaced. However, in this application, the medium end is connected to the medium container by an interference fit. At the same time, the connector end is connected to the pressure sensor 1 by a thread and is fixed and sealed with a sealing ring 105. When the pressure sensor 1 needs to be replaced, there is no need to damage the medium container. The pressure sensor 1 can be removed and replaced simply by rotating it.

[0064] In summary, compared with the prior art, the chip fixing structure and terminal fixing structure of this utility model are more compact after fixing the chip and terminal 114 respectively, and the overall size of the pressure sensor 1 is smaller, realizing miniaturization and facilitating installation in narrow environments.

[0065] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pressure sensor, characterized by, The utility model relates to a pressure sensor, including: A base is provided with an inductive head, and a medium channel is arranged on the base; A fixing assembly is arranged on the base, and the fixing assembly comprises a chip fixing structure and a terminal fixing structure; A chip is arranged in the fixing assembly through the chip fixing structure; One end of a terminal is arranged in the fixing assembly through the terminal fixing structure, and the other end penetrates the fixing assembly.

2. The pressure sensor of claim 1, wherein: The inductive head is provided with a containing cavity, and the containing cavity is communicated with the medium channel.

3. The pressure sensor of claim 1, wherein: The chip comprises a first chip and a second chip, the inductive head has a mounting surface, the first chip is arranged on the mounting surface, and the first chip is connected with the second chip.

4. The pressure sensor of claim 3, wherein: The chip fixing structure comprises a support frame and a mounting plate, the support frame is arranged on the base, the mounting plate is arranged on the support frame, the second chip is arranged on the mounting plate, and a connecting line is arranged between the first chip and the second chip.

5. The pressure sensor of claim 4, wherein: The terminal fixing structure comprises a pin and a positioning frame, the pin is arranged on the support frame, the positioning frame is arranged on the support frame, the terminal is fixedly connected with the pin, and the terminal penetrates the positioning frame and is arranged.

6. The pressure sensor of claim 5, wherein: The terminal is provided with at least one, and the pin is arranged correspondingly to the terminal.

7. The pressure sensor of claim 6, wherein: The positioning frame is provided with a limiting hole corresponding to the terminal, and the terminal penetrates the positioning frame and is arranged.

8. The pressure sensor of claim 5, wherein: The fixing assembly further comprises a shell, the shell is arranged on the base, the chip fixing structure and the terminal fixing structure are arranged in the shell, the inductive head is located in the shell, and the positioning frame is abutted with the inner top of the shell.

9. A pressure detection device, characterized by: The utility model relates to a pressure sensor, including:

10. The pressure detecting apparatus according to claim 9, characterized by: Further comprising an adapter, the adapter comprises a joint end, a connecting pipe and a medium end arranged in sequence, the medium end is used for passing into medium, and the joint end is detachably connected with the pressure sensor.

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