A sensor antifreeze plug structure

Abstract

The invention relates to a sensor antifreeze plug structure, wherein the sensor comprises a shell, wherein the shell comprises a first shell and a second shell connected to each other, and a sealing component is arranged between the first shell and the second shell, a detection unit is installed at a position of the shell between the first shell and the second shell, a through hole is provided on the shell for allowing a medium to flow into the shell and contact the detection unit, and an antifreeze plug structure is arranged in the through hole, the antifreeze plug structure comprises an internal bracket and a rubber sleeve, the rubber sleeve is arranged on the outside of the internal bracket, an air cavity is arranged on at least one of the two sides of the rubber sleeve, a raised portion which is interference-fitted with the through hole is arranged on the outside of the rubber sleeve, and the sensor antifreeze plug structure allows the medium to flow through and contact the detection unit, and the sensor antifreeze plug structure can protect the sensor by playing a buffering role by sealing the air cavity, and the antifreeze plug structure is supported by the internal bracket, so that the antifreeze plug structure is not easy to deviate, the antifreeze plug structure is stable, and the antifreeze effect is good.

Description

Technical Field

[0001] The invention relates to a sensor, and in particular to an antifreeze plug structure for a sensor. Background Art

[0002] Liquid sensors are intelligent devices that detect parameters such as liquid temperature and pressure. They are generally installed in a casing. The liquid needs to enter the casing. In cold and hot weather, the liquid changes from liquid to solid, and the volume increases, which will compress the sensor, causing damage to the sensor and shortening the service life of the sensor. Summary of the invention

[0003] In view of the above shortcomings, the applicant has conducted research and improvements and provided a sensor antifreeze plug structure.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A sensor antifreeze plug structure, the sensor includes a shell, the shell includes a first shell and a second shell connected, and a sealing component is arranged between the first shell and the second shell, the shell is located between the first shell and the second shell to install a detection unit, the shell is provided with a through hole allowing a medium to flow into the shell and contact the detection unit, the antifreeze plug structure is arranged in the through hole, the antifreeze plug structure includes an internal bracket and a rubber sleeve, the rubber sleeve is arranged on the outside of the internal bracket, at least one of the two sides of the rubber sleeve is provided with an air cavity, the outside of the rubber sleeve is provided with a raised portion that is interference fit with the through hole, and the sensor antifreeze plug structure allows the medium to flow through and contact the detection unit.

[0006] As a further improvement of the above technical solution:

[0007] A circle of side grooves is formed in the middle of the internal bracket, and the grooves of the internal bracket cooperate with the inner side of the rubber sleeve to form an air cavity. A notch is formed on at least one of the raised portion of the rubber sleeve and the inner wall of the through hole to allow the medium to flow through.

[0008] The notch is formed on the raised portion.

[0009] The notch is formed on the inner wall of the through hole, and the upper and lower ends of the notch are respectively located above the protruding portion and below the protruding portion.

[0010] The bottom of the rubber sleeve is provided with a lower guide groove, and the upper end of the internal bracket located at the notch is provided with an upper guide groove.

[0011] A lower groove is also formed at the lower end of the internal bracket, and an air cavity is also formed between the lower groove and the rubber sleeve.

[0012] The inner bracket and the rubber sleeve have a central through hole, and a connecting slot connecting the central through hole and the inner side of the rubber sleeve is also provided at the position of the central through hole of the inner bracket. A plurality of protrusions are arranged on the outer side of the rubber sleeve, and a side groove is formed at the position of the rubber sleeve between the protrusions. The side groove on the outer side of the rubber sleeve cooperates with the inner wall of the through hole to form an air cavity.

[0013] The shell is located at the lower end of the through hole and is connected to a support base that supports the antifreeze plug structure. The support base is provided with a central hole that communicates with the through hole and the outside.

[0014] A supporting boss for supporting the rubber sleeve is arranged on the upper end of the internal bracket.

[0015] The beneficial effects of the present invention are as follows: the sensor antifreeze plug structure is composed of an internal bracket and a rubber sleeve, and a sealed air cavity is formed between the internal bracket and the rubber sleeve. When the medium changes from liquid to solid and the volume increases, the sealed air cavity plays a buffering role to protect the sensor, and the internal bracket plays a supporting role, so the antifreeze plug structure will not be offset, making the antifreeze plug structure more stable and having a good antifreeze effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional view of the sensor antifreeze plug structure provided in Example 1.

[0017] Figure 2 This is a schematic structural diagram of the second shell of the sensor antifreeze plug structure provided in Example 1.

[0018] Figure 3 This is a schematic diagram of the structure of the internal bracket of the sensor antifreeze plug structure provided in Example 1.

[0019] Figure 4 This is a schematic diagram of the structure of the rubber sleeve of the sensor antifreeze plug structure provided in Example 1.

[0020] Figure 5 A cross-sectional view of the sensor antifreeze plug structure provided in Example 2.

[0021] Figure 6 This is a schematic diagram of the structure of the internal bracket of the sensor antifreeze plug structure provided in Example 2.

[0022] Figure 7 This is a schematic diagram of the structure of the rubber sleeve of the sensor antifreeze plug structure provided in Example 2.

[0023] In the figure: 1. first shell; 2. second shell; 3. detection unit; 4. through hole; 41. support base; 411. central hole; 5. internal bracket; 51. upper guide groove; 52. connecting slot; 53. supporting boss; 6. rubber sleeve; 61. raised part; 62. lower guide groove; 7. air cavity; 8. notch; 9. central through hole. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] The specific implementation of this embodiment is described below with reference to the accompanying drawings.

[0026] like Figures 1 to 4 As shown, the sensor antifreeze plug structure of this embodiment, the sensor includes a shell, the shell includes a first shell 1 and a second shell 2 connected, and a sealing component for sealing the first shell 1 and the second shell 2 is arranged between the first shell 1 and the second shell 2, a detection unit 3 is installed at the lower end of the first shell 1, and the second shell 2 is provided with a through hole 4 allowing the medium to flow into the shell and contact the detection unit 3, the antifreeze plug structure is arranged in the through hole 4, and the second shell 2 is located at the lower end of the through hole 4 and connected to a support base 41 supporting the antifreeze plug structure, and the support base 41 is provided with a central hole 41 connecting the through hole 4 and the outside. 1. The antifreeze plug structure includes an internal bracket 5 and a rubber sleeve 6. The rubber sleeve 6 is sleeved on the outside of the internal bracket 5, and a supporting boss 53 for supporting the rubber sleeve 6 is arranged on the upper end of the internal bracket 5. A circle of side grooves is arranged in the middle of the internal bracket 5. The groove of the internal bracket 5 cooperates with the inner side of the rubber sleeve 6 to form an air cavity 7. A lower groove is also arranged at the lower end of the internal bracket 5. An air cavity 7 is also formed between the lower groove and the rubber sleeve 6. A protrusion 61 that is interference-fitted with the through hole 4 is arranged on the outside of the rubber sleeve 6. A notch 8 that allows the medium to flow through is arranged on at least one of the protrusion 61 of the rubber sleeve 6 and the inner wall of the through hole 4.

[0027] The notch 8 is provided on the raised portion 61, or on the inner wall of the through hole 4, and the upper and lower ends of the notch 8 are respectively located above and below the raised portion 61, or the notch 8 can be provided at two locations at the same time, and the medium flow can pass through the notch 8 and contact the detection unit 3 installed at the lower end of the first shell 1.

[0028] A lower guide groove 62 is formed at the bottom of the rubber sleeve 6 , and an upper guide groove 51 is formed at the outer side of the supporting boss 53 on the internal bracket 5 and located at the upper end of the notch 8 .

[0029] When the sensor antifreeze plug structure is installed, the rubber sleeve 6 is sleeved on the outside of the internal bracket 5, and then the antifreeze plug structure is inserted into the through hole 4 of the second shell 2, and the bottom of the rubber sleeve 6 is supported on the supporting base 41, and then the sealing component is placed in the second shell 2, the detection unit 3 is installed on the first shell 1, and then the first shell 1 and the second shell 2 are assembled and connected. When the sensor detects, the medium flows in from the central hole 411, and passes through the lower guide groove 62, the gap between the rubber sleeve 6 and the inner wall of the through hole 4, the notch 8 between the protrusion 61 and the through hole 4, and the upper guide groove 51 to flow into the first shell 1 and the second shell 2. The medium contacts the detection unit 3, and the medium parameters are detected by the detection unit 3. When the medium solidifies and the volume increases, the air cavity 7 on the inner side of the rubber sleeve 6 can be compressed inward, and the air cavity 7 plays a buffering role, which will not compress the sensor and play a role in protecting the sensor.

[0030] Embodiment 2

[0031] like Figures 5 to 7 As shown, the sensor antifreeze plug structure of this embodiment, the sensor includes a shell, the shell includes a first shell 1 and a second shell 2 connected, and a sealing component for sealing the first shell 1 and the second shell 2 is arranged between the first shell 1 and the second shell 2, a detection unit 3 is installed at the lower end of the first shell 1, and the second shell 2 is provided with a through hole 4 allowing the medium to flow into the shell and contact the detection unit 3, the antifreeze plug structure is arranged in the through hole 4, the second shell 2 is located at the lower end of the through hole 4 and is connected to a support base 41 supporting the antifreeze plug structure, and the support base 41 is provided with a central hole 411 connecting the through hole 4 and the outside, and the antifreeze plug structure includes The internal bracket 5 and the rubber sleeve 6 are sleeved on the outside of the internal bracket 5, and a supporting boss 53 for supporting the rubber sleeve 6 is provided on the upper end of the internal bracket 5. The internal bracket 5 and the rubber sleeve 6 are provided with a central through hole 9 at the upper side of the central hole 411. The central through hole 9 of the internal bracket 5 is also provided with a connecting slot 52 connecting the central through hole 9 and the inner side of the rubber sleeve 6. Three protrusions 61 are provided on the outside of the rubber sleeve 6 to have an interference fit with the inner wall of the through hole 4, and the rubber sleeve 6 is located between the three protrusions 61 to form two side grooves. The side grooves on the outside of the rubber sleeve 6 cooperate with the inner wall of the through hole 4 to form two air cavities 7.

[0032] When the sensor antifreeze plug structure is installed, the rubber sleeve 6 is sleeved on the outside of the internal bracket 5, and then the antifreeze plug structure is inserted into the through hole 4 of the second shell 2, and the bottom of the rubber sleeve 6 is supported on the supporting base 41, and then the sealing component is placed in the second shell 2, the detection unit 3 is installed on the first shell 1, and then the first shell 1 and the second shell 2 are assembled and connected. When the sensor is detecting, the medium flows in from the central hole 411, and passes through the central through hole 9 opened on the internal bracket 5 and the rubber sleeve 6, and flows into the first shell 1 and the second shell 2. The medium contacts the detection unit 3, and the medium parameters are detected by the detection unit 3. When the medium solidifies and the volume increases, the medium passes through the connecting slot 52 to compress the air cavity 7 on the outside of the rubber sleeve 6 outward, and the air cavity 7 plays a buffering role, which will not compress the sensor and play a role in protecting the sensor.

[0033] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. The present invention may be modified in any form without violating the basic structure of the present invention.

Claims

1. A sensor antifreeze plug structure, the sensor comprising a housing, the housing comprising a first housing (1) and a second housing (2) connected to each other, a sealing component being arranged between the first housing (1) and the second housing (2), a detection unit (3) being arranged on the housing between the first housing (1) and the second housing (2), a through hole (4) being arranged on the housing for allowing a medium to flow into the housing and contact the detection unit (3), characterized in that: The antifreeze plug structure is arranged in the through hole (4), and comprises an internal bracket (5) and a rubber sleeve (6). The rubber sleeve (6) is sleeved on the outside of the internal bracket (5). An air cavity (7) is arranged on at least one of the two sides of the rubber sleeve (6). A raised portion (61) which is interference-fitted with the through hole (4) is arranged on the outside of the rubber sleeve (6). The sensor antifreeze plug structure allows a medium flow to pass through and contact the detection unit (3). A circle of side grooves is provided in the middle of the internal bracket (5). The groove of the internal bracket (5) cooperates with the inner side of the rubber sleeve (6) to form an air cavity (7). A notch (8) which allows a medium flow to pass through is provided on at least one of the raised portion (61) of the rubber sleeve (6) and the inner wall of the through hole (4).

2. The sensor antifreeze plug structure according to claim 1, characterized in that: The notch (8) is formed on the raised portion (61).

3. The sensor antifreeze plug structure according to claim 1, characterized in that: The notch (8) is formed on the inner wall of the through hole (4), and the upper and lower ends of the notch (8) are located above the raised portion (61) and below the raised portion (61), respectively.

4. The sensor antifreeze plug structure according to claim 1, characterized in that: The bottom of the rubber sleeve (6) is provided with a lower guide groove (62), and the upper end of the internal bracket (5) located at the notch (8) is provided with an upper guide groove (51).

5. The sensor antifreeze plug structure according to claim 1, characterized in that: A lower groove is also formed at the lower end of the internal bracket (5), and an air cavity (7) is formed between the lower groove and the rubber sleeve (6).

6. The sensor antifreeze plug structure according to claim 1, characterized in that: The outer shell is located at the lower end of the through hole (4) and is connected to a support base (41) that supports the antifreeze plug structure. The support base (41) is provided with a central hole (411) that communicates with the through hole (4) and the outside.

7. The sensor antifreeze plug structure according to claim 1, characterized in that: A supporting boss (53) for supporting the rubber sleeve (6) is provided at the upper end of the internal bracket (5).

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