Sensor sealing structure

Abstract

The utility model relates to the technical field of sensors, and discloses a sensor sealing structure comprising a housing, the inner side of the housing is provided with a sealing cavity, the top side of the housing is in threaded connection with a mounting head, the top side of the mounting head is provided with a connecting end, and the bottom side of the mounting head is fixedly provided with a sensor body. In the installation process, the sealing ring on the inner side of the fixing groove is clamped with the wedging groove, so that sealing is facilitated, then in the installation process of the installation head, the sealing sleeve is squeezed, the sealing sleeve is driven to reset under the action of the fastening spring, and the sealing sleeve and the sealing groove are clamped and sealed; and after the clamping sleeve and the connecting base are clamped, the sealing film drives the movable rod and the sealing film to move towards the clamping groove under the action of the second reset spring, and therefore the third sealing effect is achieved through the fact that the sealing film is tightly attached to the clamping groove, and the overall sealing performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a sensor sealing structure. Background Technique

[0002] A sensor is a control component often used in industrial automation, and many high-precision sensors will seal their interiors to prevent external water vapor from entering the sensor and affecting its accuracy.

[0003] According to the search, the Chinese patent document, publication number: CN213021649U, discloses a sensor sealing structure. By inserting the sensor into a soft rubber sleeve and then press-fitting a compression ring over the soft rubber sleeve, the compression ring presses the soft rubber sleeve evenly in a circle, so that the soft rubber sleeve closely adheres to the outer skin of the connecting wire, thus achieving waterproofing. Such a waterproof effect is good, and the production is simple with high economic benefits. However, during use, although the soft rubber sleeve can be fixed by the compression ring, the fixing effect of the compression ring is limited and it is prone to detachment. And after long-term use, not only does the elasticity of the compression ring decrease, which easily leads to a decrease in sealing performance, but also it is troublesome and time-consuming to peel off the compression ring, which is not conducive to maintenance and detection. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a sensor sealing structure, which has the advantages of convenient and fast disassembly and assembly, remarkable overall sealing effect, and improved service life of the sensor, and solves the above technical problems.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: A sensor sealing structure includes a housing. A sealing cavity is opened inside the housing. The top side of the housing is connected with a mounting head through a thread. A connecting end is arranged on the top side of the mounting head. The sensor body is fixedly installed on the bottom side of the mounting head. A first sealing assembly is arranged between the housing and the mounting head. A fixing seat is fixedly installed inside the sealing cavity. A second sealing assembly and a clamping sleeve are respectively arranged between the fixing seat and the mounting head.

[0008] Preferably, an installation groove is opened on the top side of the housing. An internal thread is opened inside the installation groove. A fixing groove is opened on the bottom side inside the installation groove. A sealing ring is arranged inside the fixing groove.

[0009] Through the above technical solution, during installation, the mounting head and the sensor body are inserted into the sealing cavity through the installation groove, and then the mounting head is rotated to be connected and fixed with the installation groove through the thread. It is convenient and fast to disassemble and assemble by rotating the mounting head.

[0010] Preferably, an external thread is provided at the upper end of the outer side of the mounting head, a fitting groove is provided at the bottom side of the mounting head, the size and shape of the fitting groove match those of the sealing ring, and a sealing groove is provided inside the mounting groove.

[0011] Through the above technical solution, during the installation process, the sealing ring inside the fixing groove is engaged with the fitting groove, which is beneficial for sealing.

[0012] Preferably, the first sealing assembly includes a cavity and a sealing sleeve. A cavity is provided on one side of the mounting groove close to the sealing groove. A sealing sleeve is movably installed inside the cavity, and a fastening spring is fixedly installed between the sealing sleeve and the cavity.

[0013] Through the above technical solution, during the installation of the mounting head, by squeezing the sealing sleeve, the sealing sleeve is driven to reset and engage with the sealing groove under the action of the fastening spring, which is beneficial for providing a second seal.

[0014] Preferably, the sealing sleeve includes a first rubber block, a second rubber block, a connecting plate and a first return spring. The two ends of the first rubber block are respectively movably installed with the connecting plates. A first return spring is fixedly installed between the connecting plate and the first rubber block, and a second rubber block is fixedly installed on the side of the connecting plate away from the first rubber block.

[0015] Through the above technical solution, during the reset process of the sealing sleeve, the first rubber block and the second rubber block slide relative to each other and are squeezed, so as to form a complete sealing ring for sealing, and the sealing effect is facilitated by the expansion or contraction of the sealing sleeve.

[0016] Preferably, clamping grooves are provided on the outer side of the clamping sleeve. There are two clamping grooves in total, which are respectively located inside and outside the clamping sleeve. The clamping grooves are in an arc structure, and the bottom end of the clamping sleeve is in a chamfered structure.

[0017] Through the above technical solution, the clamping sleeve is engaged with the connecting seat, which is beneficial for providing a third sealing line of defense and improving the overall stability after installation.

[0018] Preferably, the second sealing assembly includes a connecting seat, a sealing film, a movable rod and a second return spring. Movable rods are respectively movably installed on the left and right sides of the connecting seat. A second return spring is fixedly installed between the movable rod and the connecting seat. A sealing film is provided inside the connecting seat, and a sealing film is fixedly installed on the side of the movable rod close to the clamping sleeve.

[0019] Through the above technical solution, after the engaging sleeve is engaged with the connecting seat, the sealing film drives the movable rod and the sealing film to move towards the card slot under the action of the second return spring, so as to achieve the third sealing effect by pressing the sealing film against the card slot, which is beneficial to improving the overall sealing performance.

[0020] Compared with the prior art, the present utility model provides a sensor sealing structure, which has the following beneficial effects:

[0021] 1. In the present utility model, the mounting head and the sensor body are inserted into the sealing cavity through the mounting groove, and then the mounting head is rotated to be fixedly connected with the mounting groove through the thread. Rotating the mounting head is convenient for quick disassembly and assembly;

[0022] 2. During the installation process of the present utility model, the sealing ring inside the fixing groove is engaged with the fitting groove, which is beneficial for sealing. Then, during the installation of the mounting head, by squeezing the sealing sleeve, the sealing sleeve is driven to reset and engage with the sealing groove under the action of the fastening spring, which is beneficial for providing the second sealing effect;

[0023] 3. When the engaging sleeve is engaged with the connecting seat in the present utility model, the sealing film drives the movable rod and the sealing film to move towards the card slot under the action of the second return spring, so as to achieve the third sealing effect by pressing the sealing film against the card slot, which is beneficial to improving the overall sealing performance. Description of the Drawings

[0024] Figure 1 is a front sectional structure schematic diagram of the present utility model;

[0025] Figure 2 is a top sectional structure schematic diagram of the first sealing assembly of the present utility model;

[0026] Figure 3 is the present utility model Figure 1 the enlarged structure schematic diagram at A in;

[0027] Figure 4 is the present utility model Figure 1 the enlarged structure schematic diagram at B in;

[0028] Figure 5 is a top structure schematic diagram of the housing of the present utility model.

[0029] Wherein: 1. Outer shell; 2. Sealing cavity; 3. Mounting head; 4. Connection end; 5. Sensor body; 6. First sealing assembly; 7. Fixed seat; 8. Clamping sleeve; 9. Second sealing assembly; 101. Mounting groove; 102. Fixing groove; 103. Sealing ring; 301. Fitting groove; 302. Sealing groove; 601. Cavity; 602. Sealing sleeve; 6021. First rubber block; 6022. Second rubber block; 6023. Connecting plate; 6024. First return spring; 801. Card slot; 901. Connecting seat; 902. Sealing film; 903. Moving rod; 904. Second return spring. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1:

[0032] As Figure 1-5 shown, a sensor sealing structure provided by the present invention includes an outer shell 1. A sealing cavity 2 is opened inside the outer shell 1. A mounting head 3 is connected to the top side of the outer shell 1 by threads. A connection end 4 is arranged on the top side of the mounting head 3. A sensor body 5 is fixedly installed on the bottom side of the mounting head 3. A first sealing assembly 6 is arranged between the outer shell 1 and the mounting head 3. A fixed seat 7 is fixedly installed inside the sealing cavity 2. A second sealing assembly 9 and a clamping sleeve 8 are respectively arranged between the fixed seat 7 and the mounting head 3.

[0033] Specifically, a mounting groove 101 is opened on the top side of the outer shell 1. Internal threads are opened inside the mounting groove 101. A fixing groove 102 is opened on the bottom side inside the mounting groove 101. A sealing ring 103 is arranged inside the fixing groove 102. The advantage is that the mounting head 3 and the sensor body 5 are inserted into the sealing cavity 2 through the mounting groove 101, and then the mounting head 3 is rotated, so as to be connected and fixed with the mounting groove 101 through threads. It is convenient and fast to disassemble and assemble by rotating the mounting head 3.

[0034] Specifically, external threads are opened at the upper end of the outer side of the mounting head 3. A fitting groove 301 is opened on the bottom side of the mounting head 3. The size and shape of the fitting groove 301 match those of the sealing ring 103. A sealing groove 302 is opened inside the mounting groove 101. The advantage is that the sealing ring 103 inside the fixing groove 102 is clamped with the fitting groove 301, which is beneficial to sealing.

[0035] Specifically, the first sealing assembly 6 includes a cavity 601 and a sealing sleeve 602. A cavity 601 is formed on the side of the installation groove 101 close to the sealing groove 302. A sealing sleeve 602 is movably installed inside the cavity 601, and a fastening spring is fixedly installed between the sealing sleeve 602 and the cavity 601. The advantage is that by squeezing the sealing sleeve 602, the sealing sleeve 602 is driven to reset under the action of the fastening spring and engage with the sealing groove 302 for sealing, which is beneficial to providing a second sealing effect.

[0036] Specifically, the sealing sleeve 602 includes a first rubber block 6021, a second rubber block 6022, a connecting plate 6023, and a first return spring 6024. Connecting plates 6023 are movably installed at both ends of the first rubber block 6021 respectively. A first return spring 6024 is fixedly installed between the connecting plate 6023 and the first rubber block 6021, and a second rubber block 6022 is fixedly installed on the side of the connecting plate 6023 away from the first rubber block 6021. The advantage is that by sliding and squeezing between the first rubber block 6021 and the second rubber block 6022, a complete sealing ring is formed for sealing, and the sealing effect is facilitated by the expansion or contraction of the sealing sleeve 602.

[0037] Embodiment 2:

[0038] As Figure 1-5 shown, as an improvement over the previous embodiment. Specifically, clamping grooves 801 are formed on the outer side of the clamping sleeve 8. There are two clamping grooves 801 in total, located on the inner and outer sides of the clamping sleeve 8 respectively. The clamping grooves 801 are in an arc structure, and the bottom end of the clamping sleeve 8 is in a chamfered structure. The advantage is that by engaging the clamping sleeve 8 with the connecting seat 901, it is beneficial to provide a third sealing line of defense and at the same time is beneficial to improving the overall stability after installation.

[0039] Specifically, the second sealing assembly 9 includes a connecting seat 901, a sealing film 902, a movable rod 903, and a second return spring 904. Movable rods 903 are movably installed on the left and right sides of the connecting seat 901 respectively. A second return spring 904 is fixedly installed between the movable rod 903 and the connecting seat 901, and a sealing film 902 is arranged inside the connecting seat 901, and a sealing film 902 is fixedly installed on the side of the movable rod 903 close to the clamping sleeve 8. The advantage is that the sealing film 902 drives the movable rod 903 and the sealing film 902 to move towards the clamping groove 801 under the action of the second return spring 904, so as to achieve the third sealing effect by pressing the sealing film 902 against the clamping groove 801, which is beneficial to improving the overall sealing performance.

[0040] In use, the mounting head 3 and the sensor body 5 are inserted into the sealing cavity 2 through the mounting groove 101. Subsequently, by rotating the mounting head 3, it is connected and fixed to the mounting groove 101 through threads. Rotating the mounting head 3 facilitates quick disassembly and assembly. During the installation process, the sealing ring 103 inside the fixing groove 102 is engaged with the fitting groove 301, which is beneficial for sealing. Subsequently, during the installation of the mounting head 3, by squeezing the sealing sleeve 602, the sealing sleeve 602 is driven to reset under the action of the fastening spring and is engaged with the sealing groove 302 for sealing, which is beneficial for providing a second sealing effect. Subsequently, during the reset process of the sealing sleeve 602, the first rubber block 6021 and the second rubber block 6022 slide relative to each other and are squeezed, thereby forming a complete sealing ring for sealing. Moreover, the sealing sleeve 602 can expand or contract to facilitate the sealing function. Subsequently, after the engaging sleeve 8 is engaged with the connecting seat 901, the sealing film 902 drives the movable rod 903 and the sealing film 902 to move towards the card slot 801 under the action of the second reset spring 904, so that the third sealing effect is achieved by the close contact between the sealing film 902 and the card slot 801, which is beneficial for improving the overall sealing performance.

[0041] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sensor sealing structure, comprising a housing (1), characterized in that: A sealing cavity (2) is provided on the inner side of the shell (1); a mounting head (3) is connected to the top side of the shell (1) via a thread; a connecting terminal (4) is provided on the top side of the mounting head (3); a sensor body (5) is fixedly installed on the bottom side of the mounting head (3); a No. 1 sealing component (6) is provided between the shell (1) and the mounting head (3); a fixing seat (7) is fixedly installed on the inner side of the sealing cavity (2); a No. 2 sealing component (9) and a snap-fit ​​sleeve (8) are respectively provided between the fixing seat (7) and the mounting head (3).

2. A sensor sealing structure according to claim 1, characterized in that: The top side of the housing (1) is provided with a mounting groove (101), the inner side of the mounting groove (101) is provided with an internal thread, the bottom side of the inner side of the mounting groove (101) is provided with a fixing groove (102), and the inner side of the fixing groove (102) is provided with a sealing ring (103).

3. A sensor sealing structure according to claim 2, characterized in that: An external thread is provided at the upper end of the outer side of the mounting head (3), a fitting groove (301) is provided at the bottom side of the mounting head (3), the size and shape of the fitting groove (301) match the sealing ring (103), and a sealing groove (302) is provided at the inner side of the mounting groove (101).

4. A sensor sealing structure according to claim 2, characterized in that: The No. 1 sealing component (6) comprises a cavity (601) and a sealing sleeve (602); a cavity (601) is provided on a side of the mounting groove (101) close to the sealing groove (302); a sealing sleeve (602) is movably installed inside the cavity (601), and a fastening spring is fixedly installed between the sealing sleeve (602) and the cavity (601).

5. A sensor sealing structure according to claim 4, characterized in that: The sealing sleeve (602) comprises a No. 1 rubber block (6021), a No. 2 rubber block (6022), a connecting plate (6023) and a No. 1 return spring (6024); the connecting plates (6023) are movably mounted at both ends of the No. 1 rubber block (6021); the No. 1 return spring (6024) is fixedly mounted between the connecting plate (6023) and the No. 1 rubber block (6021); and the No. 2 rubber block (6022) is fixedly mounted on a side of the connecting plate (6023) away from the No. 1 rubber block (6021).

6. A sensor sealing structure according to claim 1, characterized in that: A card slot (801) is provided on the outer side of the card sleeve (8), and there are two card slots (801) in total, which are respectively located on the inner side and the outer side of the card sleeve (8). The card slot (801) is an arc-shaped structure, and the bottom end of the card sleeve (8) is a chamfered structure.

7. A sensor sealing structure according to claim 1, characterized in that: The No. 2 sealing assembly (9) comprises a connecting seat (901), a sealing film (902), a movable rod (903) and a No. 2 return spring (904); the movable rods (903) are movably mounted on the left and right sides of the connecting seat (901), the No. 2 return spring (904) is fixedly mounted between the movable rod (903) and the connecting seat (901), a sealing film (902) is arranged on the inner side of the connecting seat (901), and the sealing film (902) is fixedly mounted on the side of the movable rod (903) close to the locking sleeve (8).

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