A pressure sensor with built-in retainer

Abstract

The utility model discloses a pressure sensor of built -in retainer, including the casing, the inside end surface department of shell is pasted with the protection film, and its end surface department is equipped with the lead -through hole, the sidewall of protection film is tightly arranged with the core, the sidewall of core is tightly arranged with the buckle ring, the inner wall of buckle ring is hinged with the circuit board, the inner wall of casing is close to the position of port and is provided with the retainer, the inner wall of retainer is hinged with the female plug, and the circuit board is electrically connected in female plug through the wire harness. The utility model discloses a buckle ring is added in the inside of pressure sensor, can fix the position of internal circuit board, avoids the female plug of wire harness another end and prevents the female plug from falling off due to the shaking of wire harness connection, and the female plug is fixed in position by the retainer arranged on the end surface of casing, prevents the female plug from pulling wire harness after connecting the male plug, and facilitates the plug -in operation of female plug in work.

Description

Technical Field

[0001] This utility model relates to the field of pressure sensor application technology, and in particular to a pressure sensor with a built-in retainer. Background Technology

[0002] A pressure sensor is an electronic device that converts applied pressure or force into a measurable electrical signal. By sensing the physical changes caused by pressure, it uses built-in sensitive elements and conversion circuits to accurately convert the physical quantity of pressure into an electrical signal that is easy to process and transmit, thereby enabling real-time monitoring, control, and recording of pressure magnitude. It is widely used in many fields such as industrial process control and automobiles.

[0003] Existing pressure sensors lack an internal fixing structure, leaving the female connector exposed on the outside. This causes the female connector to wobble during use, potentially damaging the wiring harness connected to the circuit board. It also makes plugging and unplugging the pressure sensor inconvenient. Therefore, this invention proposes a pressure sensor with a built-in retainer. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pressure sensor with a built-in retainer. By adding a clamping ring inside the pressure sensor, the internal circuit board can be fixed in position, preventing it from falling off due to shaking at the connection point with the wire harness. At the same time, a retainer is provided at the end face of the housing, which can fix the position of the female plug at the other end of the wire harness, preventing the female plug from pulling on the wire harness after connecting the male plug, and facilitating the insertion and removal of the female plug during operation.

[0005] To solve the above technical problems, the present invention provides a pressure sensor with a built-in retainer, including a housing, a protective film attached to the inner end face of the housing, a through hole opened at the end face, a core being pressed against the side wall of the protective film, a clamping ring being pressed against the side wall of the core, and a circuit board being engaged with the inner wall of the clamping ring.

[0006] A retainer is provided on the inner wall of the housing near the port. A female plug is engaged with the inner wall of the retainer. The circuit board is electrically connected to the female plug through a wire harness so that the female plug can be stably inserted into the external male plug under the action of the retainer.

[0007] The present invention is further configured such that: the interior of the outer shell is provided with a first mounting groove, and the core is located in the first mounting groove and pressed against the protective film.

[0008] The above technical solution facilitates the use of a protective film to protect the core, preventing damage to the sensing area of ​​the core.

[0009] The present invention is further configured such that: a snap-fit ​​groove is provided inside the outer shell near the first mounting groove, and the outer wall of the snap-fit ​​ring is tightly fitted to the inner wall of the snap-fit ​​groove, while its end face is pressed against the end face of the core.

[0010] The above technical solution facilitates the clamping ring to limit and fix the core installed inside the first mounting groove, thereby ensuring the accuracy of pressure detection.

[0011] The present invention is further configured such that: a groove is symmetrically provided on one side of the clamping ring, and the groove is U-shaped.

[0012] The above technical solution allows the crimping ring to deform slightly using the groove during installation, ensuring a tight fit inside the crimping groove.

[0013] The present invention is further configured such that: a storage cavity is formed on the inner wall of the outer shell near the crimping groove, and a portion of the circuit board and its electrically connected wire harness are located in the storage cavity.

[0014] The above technical solution allows the circuit board to be located inside the storage cavity during installation, and the connected wire harnesses can be placed in a certain space to avoid mutual compression inside, thus achieving a reasonable internal space arrangement.

[0015] The present invention is further configured such that: the inner wall of the outer shell is provided with a second mounting groove near the storage cavity, and the outer wall of the retainer is tightly fitted with the inner wall of the second mounting groove; the outer wall of the retainer is symmetrically provided with sliding grooves and adapting grooves, and the two sliding grooves and adapting grooves are arranged alternately.

[0016] The above technical solution allows the adaptable grooves and slides on the outer wall of the cage to adapt to the compression deformation during installation, so that the cage can be stably fixed inside the shell by utilizing its restoring elasticity.

[0017] The present invention is further configured such that: the inside of the retainer is provided with a through-hole connecting groove, and the female plug is inserted and fixed to the connecting groove through one end of its connecting part.

[0018] The above technical solution facilitates the fitting and insertion of the female plug into the connecting groove of the retainer during installation and fixation.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The pressure sensor with a built-in retainer proposed in this utility model adds a clamping ring inside the pressure sensor to fix the position of the internal circuit board and prevent it from falling off due to shaking at the connection point with the wiring harness.

[0021] 2. The pressure sensor with a built-in retainer proposed in this utility model has a retainer set at the end face of the housing. The retainer can fix the position of the female plug at the other end of the wire harness, prevent the female plug from pulling the wire harness after connecting the male plug, and facilitate the insertion and removal operation of the female plug during operation. Attached Figure Description

[0022] Figure 1 This is a structural diagram of a pressure sensor with a built-in retainer according to the present invention;

[0023] Figure 2 This is a cross-sectional view of a pressure sensor with a built-in retainer according to the present invention;

[0024] Figure 3 This is an exploded view of a pressure sensor with a built-in retainer according to the present invention.

[0025] Figure 4 This is a cross-sectional view of the housing in a pressure sensor with a built-in retainer according to the present invention.

[0026] Figure 5 This is a diagram showing the connection structure between the retainer and the female plug in a pressure sensor with a built-in retainer according to this utility model.

[0027] In the figure: 1. Outer shell; 11. First mounting groove; 12. Crimping groove; 13. Storage cavity; 14. Second mounting groove; 15. Through hole; 2. Protective film; 3. Core; 4. Crimping ring; 5. Circuit board; 6. Retainer; 61. Connecting groove; 62. Slide groove; 63. Adaptive groove; 7. Female plug; 71. Connecting part. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0029] like Figures 1-4As shown, a pressure sensor with a built-in retainer includes a housing 1. A first mounting groove 11 is provided inside the housing 1, and a core 3 is located within the first mounting groove 11 and pressed against a protective film 2. This allows the protective film 2 to protect the core 3 and prevent damage to its sensing area. A protective film 2 is fitted to the inner end face of the housing 1, and a through hole 15 is provided at its end face. The core 3 is pressed against the side wall of the protective film 2, and a clamping ring 4 is pressed against the side wall of the core 3. A clamping groove 12 is provided inside the housing 1 near the first mounting groove 11, and the outer wall of the clamping ring 4 is tightly fitted against the inner wall of the clamping groove 12, while its end face presses against the end face of the core 3, facilitating the installation of the clamping ring 4 inside the first mounting groove 11. The core 3 is fixed in place to ensure the accuracy of pressure detection. The clamping ring 4 has symmetrical grooves on one side, and the grooves are U-shaped. When installing the clamping ring 4, it can deform a certain amount using the grooves, so that the clamping ring 4 can be tightly installed inside the clamping groove 12. The inner wall of the clamping ring 4 is connected to the circuit board 5. The inner wall of the outer shell 1 is provided with a storage cavity 13 near the clamping groove 12. A part of the circuit board 5 and its electrical connection harness are located in the storage cavity 13. When installing the circuit board 5, it can be located inside the storage cavity 13, and the connection harness can be placed in a certain space to avoid mutual compression inside, thus achieving a reasonable internal space arrangement.

[0030] like Figure 4 and Figure 5 As shown, a retainer 6 is provided on the inner wall of the outer casing 1 near the port. A second mounting groove 14 is provided on the inner wall of the outer casing 1 near the storage cavity 13. The outer wall of the retainer 6 is tightly fitted to the inner wall of the second mounting groove 14. The outer wall of the retainer 6 is symmetrically provided with sliding grooves 62 and adapting grooves 63, and the two sliding grooves 62 and adapting grooves 63 are arranged alternately. This allows the retainer 6 to be adapted to the compression deformation during installation when it is installed inside the outer casing 1. This allows the retainer 6 to be stably fixed inside the outer casing 1 by restoring elasticity. A female plug 7 is snapped into the inner wall of the retainer 6. The circuit board 5 is electrically connected to the female plug 7 through a wire harness. A connecting groove 61 is provided through the inside of the retainer 6. The female plug 7 is inserted and fixed into the connecting groove 61 through one end of its connecting part 71. This allows the female plug 7 to be fitted into the connecting groove 61 of the retainer 6 when it is installed and fixed, so that the female plug 7 can be stably inserted into the external male plug under the action of the retainer 6.

[0031] In use, the internal clamping ring 4 can fix the position of the internal core 3 and circuit board 5, while the retainer 6 is used to fix the female plug 7 connected to the wire harness, so as to facilitate its stable fixation with the external male plug, thereby ensuring the stability of the female plug 7 in use.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pressure sensor with a built-in cage, comprising a housing (1), characterized in that: A protective film (2) is attached to the inner end face of the outer shell (1), and a through hole (15) is opened at the end face. A core (3) is attached to the side wall of the protective film (2), and a clamping ring (4) is attached to the side wall of the core (3). A circuit board (5) is attached to the inner wall of the clamping ring (4). A retainer (6) is provided on the inner wall of the outer casing (1) near the port. A female plug (7) is engaged with the inner wall of the retainer (6). The circuit board (5) is electrically connected to the female plug (7) through a wire harness so that the female plug (7) can be stably inserted into the external male plug under the action of the retainer (6).

2. A pressure sensor with a built-in cage according to claim 1, characterized in that: The outer shell (1) has a first mounting groove (11) inside, and the core (3) is located in the first mounting groove (11) and pressed against the protective film (2).

3. A pressure sensor with a built-in cage according to claim 2, characterized in that: The inner side of the outer shell (1) is provided with a snap-fit ​​groove (12) near the first mounting groove (11), and the outer wall of the snap-fit ​​ring (4) is tightly attached to the inner wall of the snap-fit ​​groove (12), while its end face is pressed against the end face of the core (3).

4. A pressure sensor with a built-in cage according to claim 3, characterized in that: The buckling ring (4) has symmetrical grooves on one side, and the grooves are U-shaped.

5. A pressure sensor with a built-in cage according to claim 3, characterized in that: The inner wall of the outer casing (1) near the crimping groove (12) has a storage cavity (13), and a part of the circuit board (5) and its electrically connected wire harness are located in the storage cavity (13).

6. A pressure sensor with a built-in cage according to claim 5, characterized in that: The inner wall of the outer shell (1) is provided with a second mounting groove (14) near the storage cavity (13), and the outer wall of the retainer (6) is closely attached to the inner wall of the second mounting groove (14). The outer wall of the retainer (6) is symmetrically provided with a sliding groove (62) and an adaptation groove (63), and the two sliding grooves (62) and the adaptation groove (63) are arranged alternately.

7. A pressure sensor with a built-in cage according to claim 6, characterized in that: The cage (6) has a through-hole connecting groove (61) inside, and the female plug (7) is fixed to the connecting groove (61) by inserting its connecting part (71) at one end.

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