Miniaturized metal film box sensor with protection structure

Abstract

The utility model discloses a miniaturized metal film box sensor with a protection structure, which comprises a sensor body, the sensor body is provided with a boss, the outer side of the boss is fixedly connected with a connecting seat, the outer side of the connecting seat is sleeved with an anti-slip ring, the outer side of the anti-slip ring is sleeved with a protection cover, and the protection cover is fixedly connected with the boss. A hollow protection cavity is formed in the protection cover and used for pouring colloid, a threaded end is arranged on the protection cover, and the outer side of the threaded end is connected with a sealing end cover through threads. During installation, the connecting seat is fixedly sleeved on the boss of the sensor body, the anti-slip ring is sleeved on the outer side of the connecting seat, the protective cover fixes the anti-slip ring by tightening the bolt, and the hollow protective cavity is arranged in the protective cover, so that glue can be poured into the protective cavity; therefore, the sensor body and the wire are sealed and protected, and the wiring part is prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of membrane box sensors, and in particular relates to a miniaturized metal membrane box sensor with a protective structure. Background Art

[0002] A diaphragm weighing sensor, comprising: a diaphragm wall having a fluid inlet that can be connected to a fluid isolator, a through opening and an internal sealing surface surrounding the through opening; an isolation fluid contained by the diaphragm wall and coupled to the pressure from the fluid isolator, a pressure sensor in the diaphragm wall, the pressure sensor comprising a sensor component, electrical contacts arranged on the sensor component and a circuit track coupled between the electrical contacts and the sensor component; and a stress isolation component having a through hole superimposed on the electrical contacts and having a first component surface bonded to the pressure sensor and a second component surface bonded to the sealing surface; the device has low overload capacity and sensitivity.

[0003] According to the authorization announcement number: CN110494729B, a pressure sensor is provided. The invention provides a pressure sensor, which can prevent the damage of the pressure detection element caused by discharge when static electricity is applied and when a withstand voltage is applied by changing the shape of the potential adjustment component covering the pressure detection element arranged inside the liquid seal chamber while ensuring the function of the potential adjustment component. The pressure sensor is characterized in that it has: a metal diaphragm that divides the pressure chamber A and the liquid seal chamber A; a metal shell arranged around the liquid seal chamber A; a pressure detection element that is liquid-sealed in the liquid seal chamber A and detects the pressure of the fluid; and a potential adjustment component, which is arranged in the liquid seal chamber A between the pressure detection element and the diaphragm and the shell, has conductivity and is connected to the zero potential terminal of the pressure detection element, and the distance between the potential adjustment component and the diaphragm and the shell is larger than the predetermined insulation distance.

[0004] However, there are some problems with the existing technology: since the connection between the sensor body and the wire is mostly made by spot welding such as soldering, and the wire is relatively thin and soft, when in use, if the connection between the wire and the sensor body is subjected to external force, it is easy to bend or be damaged, causing the sensor to malfunction. In addition, since the size of the miniaturized metal diaphragm box sensor is small, the connection between the sensor and the wire is uneven, and there are many components. If water enters, water will remain at the connection point, causing damage to the sensor. Therefore, we propose a miniaturized metal diaphragm box sensor with a protective structure. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a miniaturized metal diaphragm box sensor with a protective structure. By arranging structures such as a boss, a connecting seat and a protective cover at the lower end of the sensor body, when in use, the connection points between the sensor and the wires are completely sealed through multiple sealed connections and internal glue filling treatment, thereby protecting the connection points and preventing the wires from being soaked in water and bent.

[0006] The utility model is implemented as follows: a miniaturized metal diaphragm box sensor with a protective structure comprises a sensor body, the sensor body is provided with a boss, the outer side of the boss is fixedly connected with a connecting seat, the outer side of the connecting seat is sleeved with an anti-slip ring, the outer side of the anti-slip ring is sleeved with a protective cover, the interior of the protective cover forms a hollow protective cavity for injecting colloid, the protective cover is provided with a threaded end, and the outer side of the threaded end is connected to a sealing end cap through a thread.

[0007] Optionally, a groove is formed on the boss, and a wire is arranged inside the groove.

[0008] Optionally, a rectangular groove is formed on the outer side of the connecting seat, and the rectangular grooves are multiple and evenly distributed.

[0009] Optionally, the anti-slip ring is made of rubber, and a bump is arranged on the outer side of the anti-slip ring to increase the friction between the protective cover and the anti-slip ring.

[0010] Optionally, the protective cover is configured as a conical cylinder, both ends of the protective cover are circular, and the diameter of the protective cover gradually decreases from top to bottom.

[0011] Optionally, the protective cover is provided with avoidance grooves, the number of the avoidance grooves is two, and the two avoidance grooves are symmetrically distributed.

[0012] Optionally, mounting blocks are fixedly connected to both sides of the avoidance groove, and the mounting blocks are symmetrically arranged.

[0013] Optionally, a protective sleeve is provided inside the sealing end cap, one end of the protective sleeve is slidably connected to the protective cover, and the other end of the protective sleeve is fixedly connected to the sealing end cap, and the wire passes through the protective sleeve and the sealing end cap at the same time.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. During installation, the connection seat is fixed on the boss of the sensor body, an anti-slip ring is sleeved on the outside of the connection seat, and the protective cover is fixed to the anti-slip ring by tightening the bolts. By setting a hollow protective cavity inside the protective cover, glue can be poured into the protective cavity to seal and protect the sensor body and the wire to prevent damage to the wiring.

[0016] 2. By fixing a connecting seat on the boss at the lower end of the sensor body and opening a plurality of rectangular grooves on the connecting seat, when the anti-slip ring is sleeved on the connecting seat, there are bumps and depressions in the contact area between the anti-slip ring and the connecting seat, so that when the protective cover is locked, the fixing and sealing of the protective cover to the wiring part of the sensor can be improved to the greatest extent.

[0017] 3. By arranging a protrusion on the outside of the anti-slip ring, when the protective cover is sleeved on the outside of the anti-slip ring, the friction between the anti-slip ring and the protective cover can be increased, thereby further improving the fixation of the protective cover to the wiring part of the sensor.

[0018] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure provided by the utility model;

[0020] Figure 2 It is an exploded schematic diagram of the overall structure provided by the utility model;

[0021] Figure 3 This is a schematic diagram of the connecting seat structure provided by the utility model;

[0022] Figure 4 It is a schematic diagram of the protective cover structure provided by the utility model.

[0023] In the figure: 1. sensor body; 11. boss; 12. groove; 13. wire; 2. connecting seat; 21. rectangular groove; 3. anti-slip ring; 31. bump; 4. protective cover; 41. protective cavity; 42. avoidance groove; 43. mounting block; 44. threaded end; 5. sealing end cover; 51. protective sleeve. DETAILED DESCRIPTION

[0024] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0025] like Figures 1 to 4 As shown, a miniaturized metal diaphragm box sensor with a protective structure provided by an embodiment of the utility model includes a sensor body 1, a sensor body 1, a boss 11 is arranged on the sensor body 1, a connecting seat 2 is fixedly connected to the outer side of the boss 11, an anti-slip ring 3 is sleeved on the outer side of the connecting seat 2, a protective cover 4 is sleeved on the outer side of the anti-slip ring 3, a hollow protective cavity 41 is formed inside the protective cover 4 for injecting colloid, a threaded end 44 is arranged on the protective cover 4, and a sealing end cover 5 is connected to the outer side of the threaded end 44 through threads.

[0026] Usually, the connection between the sensor body 1 and the wire 13 is mostly achieved by spot welding such as soldering. Since the wire 13 is relatively thin and soft, the connection between the sensor body 1 and the wire 13 is easily bent or damaged if subjected to external force during use, causing the sensor body 1 to malfunction. In addition, since the miniaturized metal diaphragm box sensor is small in size, the connection between the sensor body 1 and the wire 13 is uneven and contains many components. If water enters, water will remain at the connection between the sensor body 1 and the wire 13, causing damage to the sensor body 1.

[0027] Furthermore, since the miniaturized metal diaphragm box sensor is small in size and the front end of the sensor body 1 is basically made of metal, there is no need to consider it too much. Therefore, the utility model focuses on the connection between the sensor body 1 and the wire 13. During installation, the connecting seat 2 is fixedly sleeved on the boss 11 below the sensor body 1, and the outer side of the connecting seat 2 is sleeved with an anti-slip ring 3 made of rubber material. The rubber material has the characteristics of large plasticity and friction, and is a very easy-to-use anti-slip material. The protective cover 4 fixes the anti-slip ring 3 by tightening the bolts at the mounting block 43. By setting a hollow protective cavity 41 inside the protective cover 4, glue can be poured into the protective cavity 41 to seal and protect the sensor body 1 and the wire 13 to prevent damage to the wiring.

[0028] Specifically, a groove 12 is formed on the boss 11 , and a wire 13 is disposed inside the groove 12 .

[0029] Furthermore, the boss 11 arranged at the lower end of the sensor body 1 is in a circular shape. The circular boss 11 can be well matched for installation and can be mounted with various connectors. For example, the connection between the anti-slip ring 3 and the protective cover 4 adopted in the utility model is in a circular shape, and the groove 12 opened inside the boss 11 is used to connect the wire 13. The outer wall of the groove 12 can effectively prevent external force from directly applying pressure to the connection between the wire 13 and the sensor body 1, thereby directly causing damage to the wiring connection.

[0030] Specifically, a rectangular groove 21 is provided on the outer side of the connecting seat 2. The number of the rectangular grooves 21 is multiple and evenly distributed. The anti-slip ring 3 is made of rubber. A bump 31 is provided on the outer side of the anti-slip ring 3 to increase the friction between the protective cover 4 and the anti-slip ring 3.

[0031] Furthermore, the connecting seat 2 is fixedly connected to the outer side of the boss 11 to strengthen the protection of the boss 11 at the connection point, and the connecting seat 2 is stepped, the large end of the connecting seat 2 is close to the sensor body 1, and the small end is used to set the anti-slip ring 3, protective cover 4 and other structures. A plurality of rectangular grooves 21 are opened on the outer side of the small end of the connecting seat 2, which are evenly distributed on the connecting seat 2 in a circular state. When the anti-slip ring 3 is sleeved on the connecting seat 2, due to the characteristics of the rubber material of the anti-slip ring 3, the anti-slip ring 3 will be tightened and sleeved on the connecting seat 2. At this time, the anti-slip ring 3 will present multiple concave and convex areas, which reduces the contact area between the anti-slip ring 3 and the connecting seat 2. When the protective cover 4 is sleeved on the outside of the anti-slip ring 3, the friction force can be increased by pressing the anti-slip ring 3, so that the connection between the protective cover 4 and the connecting seat 2 is more firm and tight, and the protective cover 4 is prevented from falling off.

[0032] Specifically, the protective cover 4 is configured as a conical cylinder, both ends of the protective cover 4 are circular, the diameter of the protective cover 4 gradually decreases from top to bottom, and an avoidance groove 42 is opened on the protective cover 4. The number of the avoidance grooves 42 is two, and the two avoidance grooves 42 are symmetrically distributed. The two sides of the avoidance groove 42 are fixedly connected with mounting blocks 43, and the mounting blocks 43 are symmetrically arranged.

[0033] It should be noted that the protective cover 4 is configured as a cone-shaped column with openings at both ends. The inner diameter of the large end is matched with the outer side of the anti-slip ring 3, and the outer side of the small end is provided with a thread corresponding to the sealing end cover 5.

[0034] Furthermore, two avoidance grooves 42 are provided on the large end of the protective cover 4, and two mounting blocks 43 are provided on both sides of the avoidance grooves 42. The mounting blocks 43 are rectangular blocks, and a through hole is provided at the center of the mounting blocks 43 for bolt connection. When installing, the large end of the protective cover 4 is sleeved on the anti-slip ring 3, and the bolts are passed through the mounting blocks 43 on both sides of the avoidance groove 42. The bolts are tightened, and the bolts apply force to make the two mounting blocks 43 approach each other, so that the avoidance groove 42 is deformed, which drives the large end of the protective cover 4 to deform, resulting in a smaller inner diameter of the large end of the protective cover 4, and then the friction force increased by the anti-slip ring 3 is realized, so that the protective cover 4 is firmly locked on the connecting seat 2 and a seal is formed;

[0035] Specifically, a protective sleeve 51 is disposed inside the sealing end cover 5 , one end of the protective sleeve 51 is slidably connected to the protective cover 4 , and the other end of the protective sleeve 51 is fixedly connected to the sealing end cover 5 , and the wire 13 passes through the protective sleeve 51 and the sealing end cover 5 at the same time.

[0036] Further, it should be noted that the protective sleeve 51 is in a stepped shape, with a large diameter fixedly connected to the sealing end cover 5 and a small diameter slidably connected to the small end opening of the protective cover 4;

[0037] The protective sleeve 51 is also made of rubber, and utilizes the good elasticity of rubber so that the protective sleeve 51 can always tighten the wire 13 to prevent the wire 13 from scattering and bending damage. In addition, the small diameter of the protective sleeve 51 is slightly larger than the small end inner diameter of the protective cover 4, so that the protective sleeve 51 can better seal the protective cavity 41.

[0038] How it works

[0039] Since the miniaturized metal diaphragm box sensor is small in size and the front end of the sensor body 1 is made of metal, during installation, the connecting seat 2 is fixedly sleeved on the boss 11 below the sensor body 1, and the outer side of the connecting seat 2 is sleeved with a rubber anti-slip ring 3. The rubber material has the characteristics of large plasticity and friction, and is a very easy-to-use anti-slip material. The protective cover 4 fixes the anti-slip ring 3 by tightening the bolts at the mounting block 43. By setting a hollow protective cavity 41 inside the protective cover 4, glue can be poured into the protective cavity 41 to seal and protect the sensor body 1 and the wire 13 to prevent damage to the wiring.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A miniaturized metal diaphragm sensor with a protective structure, comprising a sensor body (1), characterized in that: The sensor body (1) is provided with a boss (11), the outer side of the boss (11) is fixedly connected to a connecting seat (2), the outer side of the connecting seat (2) is sleeved with an anti-slip ring (3), the outer side of the anti-slip ring (3) is sleeved with a protective cover (4), the interior of the protective cover (4) forms a hollow protective cavity (41) for injecting colloid, the protective cover (4) is provided with a threaded end (44), and the outer side of the threaded end (44) is connected to a sealing end cover (5) through a thread.

2. The miniaturized metal diaphragm sensor with a protective structure according to claim 1, characterized in that: The boss (11) is provided with a groove (12), and a conductive wire (13) is arranged inside the groove (12).

3. The miniaturized metal diaphragm sensor with a protective structure according to claim 1, characterized in that: A rectangular groove (21) is provided on the outer side of the connection seat (2), and the rectangular grooves (21) are multiple and evenly distributed.

4. The miniaturized metal diaphragm sensor with a protective structure according to claim 1, characterized in that: The anti-slip ring (3) is made of rubber material, and a protrusion (31) is arranged on the outer side of the anti-slip ring (3) for increasing the friction between the protective cover (4) and the anti-slip ring (3).

5. The miniaturized metal diaphragm sensor with a protective structure according to claim 1, characterized in that: The protective cover (4) is configured as a conical column, both ends of the protective cover (4) are circular, and the diameter of the protective cover (4) gradually decreases from top to bottom.

6. The miniaturized metal diaphragm sensor with a protective structure according to claim 1, characterized in that: The protective cover (4) is provided with avoidance grooves (42), the number of the avoidance grooves (42) is two, and the two avoidance grooves (42) are symmetrically distributed.

7. The miniaturized metal diaphragm sensor with a protective structure according to claim 6, characterized in that: Mounting blocks (43) are fixedly connected to both sides of the avoidance groove (42), and the mounting blocks (43) are symmetrically arranged.

8. The miniaturized metal diaphragm sensor with a protective structure according to claim 2, characterized in that: A protective sleeve (51) is provided inside the sealing end cover (5), one end of the protective sleeve (51) is slidably connected to the protective cover (4), and the other end of the protective sleeve (51) is fixedly connected to the sealing end cover (5), and the wire (13) passes through the protective sleeve (51) and the sealing end cover (5) at the same time.

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