Sealing structure and equipment having the same

Abstract

The present invention discloses a sealing structure and a device with the sealing structure, belonging to the technical field of tooling and apparatus. A sealing structure comprises: a structural member, including a packaging member, which is provided with a groove and a through hole connected to the bottom of the groove; a sealing body, which is arranged on the packaging member; a conductive device, which is installed in the groove; a cavity, which is formed by the structural member distributed at a preset distance and filled with an insulating sealing fluid; a wire, which passes through the through hole or the cavity and is connected to the conductive device. By filling the cavity with insulating sealing fluid and setting the wire and the conductive device in stages, multi-layer isolation between the internal and external fluid media and gas media of the equipment is achieved, the purpose of equipment sealing is achieved, and the accuracy of the equipment is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tooling and apparatus, and in particular relates to a sealing structure and equipment with the sealing structure. Background Art

[0002] Vehicle weighing sensors play a vital role in the non-stop overload control on highways. Due to the large traffic volume, different speeds, overweight and over-limit trucks, large temperature differences in the environment, deformation and vibration of the road surface, the vehicle weighing sensors are not sealed tightly, the outer skin of the signal line is broken, and other disadvantages, causing the insulation medium in the sensor's internal space to change, affecting the change of insulation resistance, causing the vehicle dynamic weighing sensor signal to be abnormal or wrong, resulting in the failure to predict the overload of the axle load of highway vehicles, the bridge overload alarm and the measurement of the vehicle axle load.

[0003] The sensor is not well sealed. When the vehicle is driving, it is extremely important to predict its vehicle condition. This requires a higher accuracy of the vehicle weighing sensor. Keeping the inside of the weighing sensor dry is the premise of high precision. The main measure at present is to isolate the inside of the weighing sensor from the external environment as much as possible. Patent No. 201510856729.3 discloses a waterproof connector for an I-beam vehicle dynamic weighing sensor. The end cover at one end of the sensor is a sensor outlet end cover, and the end cover at the other end is a sensor non-outlet end cover. There is a cavity penetrating through the I-beam elastic body, and lead pads matching the cavity are arranged at both ends of the cavity. The cable passes through the trachea and is connected to the sensor measurement unit through the lead pad, extending from the sensor outlet end cover, and fixed through the outlet seal. The waterproof connector adopts end cover sealing and outlet sealing to enhance the sealing effect of the sensor, thereby ensuring the long-term stability of the insulating medium in the internal environment of the sensor to achieve the sealing purpose, and then achieve the waterproof purpose. This method of using a single-wire connection, end cover sealing and outlet wire sealing does not further seal the interior of the sensor, and the single-wire easily allows air medium to enter the interior of the sensor, resulting in poor sealing effect. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention provides a sealing structure and a device having the sealing structure. By setting structural parts, filling the compartment with insulating sealing fluid, and setting staged wires and conductors, multi-layer isolation between the internal and external fluid media and gas media of the device is achieved, thereby achieving the purpose of sealing the device, providing conditions for the device with the sealing structure to be isolated from the outside, and improving the accuracy of the device.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A sealing structure, comprising:

[0007] The structural member includes a packaging member, which is provided with a groove and a through hole connected to the bottom of the groove; a sealing body, which is provided on the packaging member; and a conductive device, which is installed in the groove;

[0008] The compartment is formed by the structural members distributed at a preset distance and filled with an insulating sealing fluid;

[0009] A conductive wire passes through the through hole or the cavity and is connected to the conductive device.

[0010] Preferably, the packaging member comprises an end cap and at least one partition, and the partition is always located on one side of the end cap;

[0011] The groove comprises a first groove formed on the partition plate; and a second groove formed on the end cover;

[0012] The through hole comprises a first through hole opened at the bottom of the first groove; and a second through hole opened at the bottom of the second groove;

[0013] The conductive device comprises a first conductor installed in the first groove; and a second conductor installed in the second groove;

[0014] The wires include a first wire passing through the first through hole and connected to the first conductor; a second wire passing through the second through hole and connected to the second conductor; and a third wire passing through the insulating sealing fluid and connected to the first conductor at one end and the second conductor at the other end;

[0015] After the end cover and the partition are set up at a preset distance, the side wall surface of the partition installed with the first conductor and the side wall surface of the end cover installed with the second conductor are both in close proximity to the insulating fluid in the compartment.

[0016] Preferably, a sealing body is provided on the outer peripheral wall of the partition; and the first groove is opened on the end surface of the partition.

[0017] Preferably, the end cover is integrally formed to include a limiting cover head and a cover body; a sealing body is provided on the outer peripheral wall of the cover body; and the second groove is provided on the end surface of the cover body.

[0018] Preferably, the first wire and the first conductor, the second wire and the second conductor, the third wire and the first conductor, and the third wire and the second conductor are all connected by welding or cold pressing.

[0019] Preferably, the first conductor has the same shape as the first groove, and the second conductor has the same shape as the second groove.

[0020] Preferably, the first conductor and the first groove, the second conductor and the second groove are both glued or screwed together by a sealing colloid; the gaps formed by the connection between the first conductor and the first groove, the second conductor and the second groove are both poured with sealing colloid; the gaps between the first wire and the first through hole, the second wire and the second through hole are both poured with sealing colloid.

[0021] A device with a sealing structure comprises a sealing structure, wherein the sealing structure is the sealing structure mentioned above.

[0022] Preferably, the device having a sealing structure is a vehicle weighing sensor.

[0023] A vehicle weighing sensor with a sealing structure, comprising:

[0024] The housing has the sealing structure at both ends, the end cap limiting cover of the sealing structure is embedded at the end of the housing, and the limiting cover is detachably connected to the housing;

[0025] The sensitive device comprises at least one sensitive element; the sensitive device is placed inside the housing and connected to the first conductor via the first wire.

[0026] Preferably, the shell comprises an upper beam, a lower beam and an "O"-shaped middle beam connected to both the upper beam and the lower beam; and the cross section of the shell is in an "I" shape.

[0027] Preferably, the limiting cover head is screwed to the shell.

[0028] Specifically, one end of the second wire passing through the second through hole is connected to the second conductor, and the other end is connected to any end of the two ends of the shell, that is, in contact with the environment to transmit signals to the outside.

[0029] Beneficial effects:

[0030] 1. A sealing structure of the present invention, by installing a sealing body on a packaging part, realizes a first barrier that isolates the external fluid or gas medium from the device body that needs to be sealed, and by distributing the structural parts at a preset distance to form a compartment, the compartment is filled with an insulating sealing fluid to form a second barrier that isolates the device body from the external fluid or gas medium. The structural parts with sealing bodies distributed at a preset distance can form multiple barriers that isolate the device body from the external fluid or gas medium according to the number; the conductive wire connects the conductive device by penetrating the through hole and the compartment to realize signal transmission. In this way, multiple barriers that isolate the device body from the external fluid or gas medium are formed, effectively blocking the influence of the external environment on the device body; the signal transmission is realized by connecting the conductive device with the multi-segment conductive wire, avoiding the single wire from allowing the external gas medium to enter the device body through the single wire end face gap, resulting in a decrease in the accuracy of the device body and a shortened life.

[0031] 2. A device with a sealing structure according to the present invention includes a sealing structure, which is mainly used to isolate the device from the environment, so that the inside of the device is kept as dry as possible, the device is protected, and the accuracy of the device is improved; the transmission path of the electrical signal is realized by using a plurality of conductors in contact with a plurality of wires, thereby avoiding the use of a single wire and avoiding the gas medium from entering the inside of the device through the end face gap of a single wire due to poor sealing of the wire, thereby affecting the accuracy and life of the device.

[0032] 3. The vehicle weighing sensor with a sealing structure of the present invention has an end cap that covers the end of the shell in an embedded manner, which prevents the end cap from loosening due to the shell being stressed for too long and the gap between the end cap and the shell from widening over time, causing environmental gas or fluid medium to enter the shell, which helps to improve the accuracy of the vehicle weighing sensor. The sealing structure is adopted to achieve effective isolation of the gas or fluid medium in the external environment by multiple isolation barriers, so that the inside of the vehicle weighing sensor is kept as dry as possible, protecting the vehicle weighing sensor and improving the accuracy of the vehicle weighing sensor; a multi-segment conductor and wire method is used to realize the transmission path of the electrical signal; it avoids the use of a single wire causing a poor seal, which causes the gas medium to enter the device through the end face gap of a single wire, affecting the accuracy and life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a cross-sectional view of a sealing structure of the present invention.

[0034] Figure 2 It is a longitudinal half-section view of a vehicle weighing sensor of the present invention.

[0035] Figure 3 The figure is a left view of a vehicle weighing sensor of the present invention.

[0036] Figure 4 The figure is a cross-sectional view of a shell of a vehicle weighing sensor of the present invention.

[0037] Figure 5 The figure is a top view of a vehicle weighing sensor of the present invention.

[0038] Figure 6 The present invention is a longitudinal cross-sectional view of a housing of a vehicle weighing sensor.

[0039] Figure 7 The present invention is a front view of an end cover of a sealing structure. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0041] It should be understood that the terms such as "having", "including" and "comprising" used in this document do not imply the existence or addition of one or more other elements or their combination. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, a direct connection, or a communication between the insides of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Example

[0043] like Figure 1 and 7 A sealing structure shown includes:

[0044] The structural member includes a packaging member, which is provided with a groove and a through hole connected to the bottom of the groove; a sealing body 4, which is provided on the packaging member; and a conductive device, which is installed in the groove;

[0045] The compartment 3 is formed by the structural members distributed at a preset distance and filled with an insulating sealing fluid 31;

[0046] A conductive wire passes through the through hole or the cavity and is connected to the conductive device.

[0047] In the present technical solution, by installing the sealing body on the package, the first barrier is realized to isolate the external fluid or gas medium from the device body to be sealed, and by distributing the structural parts at a preset distance to form a cavity, the cavity is filled with an insulating sealing fluid to form a second barrier to isolate the device body from the external fluid or gas medium. The structural parts with sealing bodies distributed at a preset distance can be thought of as multiple barriers to isolate the device body from the external fluid or gas medium according to the number; the conductive wire connects the conductive device by penetrating the through hole and the cavity to realize signal transmission. In this way, multiple barriers are formed to isolate the device body from the external fluid or gas medium, effectively blocking the influence of the external environment on the device body; the signal transmission is realized by connecting the multi-segment conductive wire to the conductive device, avoiding the single wire from allowing the external gas medium to enter the device body through the single wire end face gap, resulting in a decrease in the accuracy of the device body and a shortened life.

[0048] In the above technical solution, the packaging component includes an end cover 2 and at least one partition 1, and the partition 1 is always located on one side of the end cover 2; the groove includes a first groove 11 opened on the partition 1; and a second groove 21 opened on the end cover 2; the through hole includes a first through hole 111 opened at the bottom of the first groove 11; and a second through hole 211 opened at the bottom of the second groove 21; the conductive device includes a first conductor 112 installed in the first groove 11; and a second conductor 212 installed in the second groove 21; the wire includes A first wire 113 passing through the first through hole 111 and connected to the first conductor 112; a second wire 213 passing through the second through hole 211 and connected to the second conductor 212; and a third wire 313 passing through the insulating sealing fluid 31 and connected to the first conductor 112 at one end and the second conductor 212 at the other end; after the end cover 2 and the partition 1 are set up at a preset distance, the side wall of the partition installed with the first conductor 112 and the side wall of the end cover installed with the second conductor 212 are both adjacent to the insulating fluid in the compartment 3. Specifically, in the above specific embodiment, the partition 1 has one.

[0049] In this way, the first wire 113, the first conductor 112, the third wire 313, the second conductor 212, and the second wire 213 are connected in sequence to form a signal path, which facilitates signal transmission, and the multi-section wire setting prevents the gas structure in the external environment from entering the device body through the gap between the wire end faces. A first conductor 112 is installed in the first groove 11 of the partition 1, and a first through hole 111 is provided at the bottom of the first groove 11. The sealing body 4 is provided on the partition 1, so that a first structural member is formed. The first wire 113 is connected to the first conductor 112 through the first through hole 111, thereby realizing connection with the first structural member, and in this way, a barrier is realized to be isolated from the external environment; a second conductor 212 is installed in the second groove 21 of the end cover 2, and a second through hole 211 is provided at the bottom of the second groove 21. The sealing body is provided on the end cover 2, so that a second structural member is formed. The second wire 213 is connected to the second conductor 212 through the second through hole 211, thereby realizing connection with the second structural member, and in this way, another barrier is realized to be isolated from the external environment; firstly, the first structural member is installed, and then the insulating sealing fluid 31 is added, and the amount added depends on the preset distance between the second structural member and the first structural member, and then the second structural member is installed, so that the compartment 3 between the first structural member and the second structural member is filled with the insulating sealing fluid 31, forming a third barrier to isolate the device body from the external environment. By adopting such a multi-barrier isolation method, the device body is isolated from the external environment, the impact of the environment on the inside of the device body is reduced, and the accuracy and life of the device body are improved. As a convertible implementation, there can be multiple first structural members, which requires grooves and through holes to be set on both sides of the partition to achieve multi-stage connection between conductors and wires, thereby realizing signal paths.

[0050] In the above technical solution, a sealing body 4 is provided on the outer peripheral wall of the partition 1; and the first groove 11 is provided on the end face of the partition 1. In this way, installation and assembly are better achieved, and the sealing body 4 is provided on the outer peripheral wall of the partition 1 to prevent the partition 1 from entering the device body and the gap between the partition 1 and the device body providing a channel for the ambient fluid or gas medium to enter the device body.

[0051] In the above technical solution, the end cap 2 is integrally formed to include a stopper cap 201 and a cap body 202; a sealing body 4 is provided on the outer peripheral wall of the cap body 202; and the second groove 21 is provided on the end face of the cap body 202. In this way, installation and assembly are better achieved; the end cap 2 adopts the design of the stopper cap 201 and the cap body 202, and the sealing body 4 is provided on the outer peripheral wall of the cap body 202 to prevent the environmental fluid or gas medium from entering the device body through the gap after the end cap and the device body are covered.

[0052] In the above technical solution, the first wire 113 and the first conductor 112, the second wire 213 and the second conductor 212, the third wire 313 and the first conductor 112, and the third wire 313 and the second conductor 212 are all connected by welding or cold pressing. The close contact between the wire and the conductor is achieved by welding or cold pressing, avoiding the problem of the device not being able to work due to poor contact.

[0053] In the above technical solution, the first conductor 112 has the same shape as the first groove 11, and the second conductor 212 has the same shape as the second groove 21. In this way, the conductor can be better embedded in the groove, reducing the gap between the conductor and the groove, thereby reducing the probability of fluid or gas medium entering the environment.

[0054] In the above technical solution, the first conductor 112 and the first groove 11, the second conductor 212 and the second groove 21 are all connected by gluing or screwing with a sealing colloid; the gaps formed by the connection between the first conductor 112 and the first groove 11, the second conductor 212 and the second groove 21 are all poured with a sealing colloid; the gaps between the first wire 113 and the first through hole 111, the second wire 213 and the second through hole 211 are all poured with a sealing colloid. The installation is facilitated by gluing with a sealing colloid. The conductor and the groove are tightly connected by screwing, which facilitates the contact between the conductor and the wire. By pouring a sealing colloid at the gap, a stronger sealing performance between the conductor and the groove is achieved, blocking the inflow of gas or fluid medium in the environment.

[0055] A device with a sealing structure comprises a sealing structure, wherein the sealing structure is as follows Figure 1 and 7 This sealing structure is mainly used to isolate the equipment from the environment, so that the inside of the equipment is kept as dry as possible, which protects the equipment and improves the accuracy of the equipment. It uses multiple conductors and multiple wires to contact each other to realize the transmission path of the electrical signal, avoiding the use of a single wire and preventing the gas medium from entering the equipment through the gap between the end faces of a single wire due to poor wire sealing, thus affecting the accuracy and life of the equipment.

[0056] In the above technical solution, the device with a sealing structure is a vehicle weighing sensor, such as Figure 2 As shown. The vehicle weighing sensor adopts this sealing structure, which can achieve good sealing, block the entry of ambient gas and fluid medium, and ensure its accuracy.

[0057] like Figure 2-6 The vehicle weighing sensor with a sealing structure comprises:

[0058] The housing 5 has the sealing structure at both ends, and the end cap limiting cover 201 of the sealing structure is embedded at the end of the housing 5, and the limiting cover 201 is detachably connected to the housing 5;

[0059] The sensitive device 51 includes at least one sensitive element. The sensitive device 51 is placed inside the housing 5 , and the sensitive device 51 is connected to the first conductor 112 via the first wire 113 .

[0060] In this technical solution, the end cap 2 is embedded in the end of the shell 5 to prevent the end cap 2 from loosening due to the shell 5 being stressed for too long and the gap between the end cap 2 and the shell 5 from widening over time, causing environmental gas or fluid medium to enter the shell 5, which helps to improve the accuracy of the vehicle weighing sensor. The sealing structure is adopted to achieve effective isolation of the gas or fluid medium in the external environment by multiple isolation barriers, so that the inside of the vehicle weighing sensor is kept as dry as possible, protecting the vehicle weighing sensor and improving the accuracy of the vehicle weighing sensor; the transmission path of the electrical signal is realized by using a multi-segment conductor and wire method; it is avoided that the seal is not tight due to the use of a single wire, resulting in the gas medium entering the device through the gap at the end face of a single wire, affecting the accuracy and life of the device.

[0061] Specifically, in the above technical solution, the sealing structure is the aforementioned Figure 1 In the above technical solution, the sealing structure at both ends of the shell can be selected to be a structural member without a through hole at the bottom of one end of the shell, that is, the end cover 2 has no through hole and no second wire. This can reduce the external environment from entering the sensor through the gap at the end face of the second conductor of the outlet line, affecting its accuracy.

[0062] In the above technical solution, the housing 5 includes an upper beam 52, a lower beam 53 and an "O"-shaped middle beam 54 connected to the upper beam 52 and the lower beam 53; the cross section of the housing is in an "I" shape. This structure has strong deformability. When a vehicle passes by the vehicle sensor, the sensor is compressed, and the pressure is transmitted to the sensitive device 51 through the inside of the housing 5, i.e., the "O"-shaped middle beam 54, so that the sensitive device 51 can feel the pressure as much as possible, and the sensitive device 51 can sense more accurately. The output of electrical signals is realized by multi-segment conductors and wires, so that the accuracy of the vehicle sensor is greatly improved.

[0063] In the above technical solution, the limit cover 201 is screwed to the housing 5. In this way, it is easy to install and disassemble, and the limit cover 201 is set to prevent the end cover from entering the housing without restriction, so that it can be effectively installed with the housing, and a good embedded design is formed with the housing end, and the sensor end has good stability.

[0064] Specifically, there is a limit plate inside the shell, and the length of the third wire is greater than the preset distance. In the process of installing the sealing structure in the vehicle weighing sensor, first, the first wire is connected to the first structural member by welding or cold pressing, one end of the third wire is connected to the first conductor of the first structural member by welding or cold pressing, and the other end of the third wire is connected to the second conductor of the second structural member by welding or cold pressing; secondly, the first structural member is pushed into the shell limit plate until it cannot be pushed, and then the insulating sealing fluid is added, and the amount of insulating sealing fluid added depends on the preset distance between the second structural member and the first structural member; continue to push the second structural member into the shell until the limit cover head cannot be pushed, and the limit cover head is threadedly connected to the shell, and the installation is completed. With this installation mode, when the second structural member is pushed in, the insulating sealing fluid will overflow to the first structural member sealing body and the shell, and the second structural sealing body and the shell, filling the gap between the shell and the sealing body, and achieving better sealing.

[0065] The number of equipment and processing scales described here are used to simplify the description of the present invention. A sealing structure and application, application method, modification and variation of the present invention are obvious to those skilled in the art.

[0066] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A sealing structure, characterized in that: include: A structural member, including a packaging member, which is provided with a groove and a through hole communicating with the bottom of the groove; A sealing body, which is arranged on the packaging member; A conductive device installed in the groove; The compartment is formed by the structural members distributed at a preset distance and filled with an insulating sealing fluid; A wire, which passes through the through hole or the cavity and is connected to the conductive device; The packaging member includes an end cap and at least one partition, wherein the partition is always located on one side of the end cap; The groove comprises a first groove formed on the partition plate; and a second groove formed on the end cover; The through hole comprises a first through hole opened at the bottom of the first groove; and a second through hole opened at the bottom of the second groove; The conductive device comprises a first conductor installed in the first groove; and a second conductor installed in the second groove; The wires include a first wire passing through the first through hole and connected to the first conductor; a second wire passing through the second through hole and connected to the second conductor; and a third wire passing through the insulating sealing fluid and connected to the first conductor at one end and the second conductor at the other end; After the end cover and the partition are set up at a preset distance, the side wall surface of the partition installed with the first conductor and the side wall surface of the end cover installed with the second conductor are both in close proximity to the insulating sealing fluid in the compartment.

2. A sealing structure according to claim 1, characterized in that: A sealing body is provided on the outer peripheral wall of the partition; and the first groove is opened on the end surface of the partition.

3. A sealing structure according to claim 1, characterized in that: The end cover is integrally formed and includes a limiting cover head and a cover body; a sealing body is provided on the outer peripheral wall of the cover body; and the second groove is opened on the end surface of the cover body.

4. A sealing structure according to claim 1, characterized in that: The first wire and the first conductor, the second wire and the second conductor, the third wire and the first conductor, and the third wire and the second conductor are all connected by welding or cold pressing.

5. A sealing structure according to claim 1, characterized in that: The first conductor has the same shape as the first groove, and the second conductor has the same shape as the second groove.

6. A sealing structure according to claim 1, characterized in that: The first conductor and the first groove, the second conductor and the second groove are both connected by gluing or screwing with a sealing colloid; the gaps formed by the connection between the first conductor and the first groove, the second conductor and the second groove are both poured with a sealing colloid; the gaps between the first wire and the first through hole, the second wire and the second through hole are both poured with a sealing colloid.

7. A device having a sealing structure, comprising a sealing structure, characterized in that: The sealing structure is the sealing structure according to any one of claims 1 to 6.

8. The device with a sealing structure as claimed in claim 7, characterized in that: The device with a sealing structure is a vehicle weighing sensor.

9. The device with a sealing structure as claimed in claim 8, characterized in that: include: The housing has the sealing structure at both ends, the end cap limiting cover of the sealing structure is embedded at the end of the housing, and the limiting cover is detachably connected to the housing; The sensitive device comprises at least one sensitive element; the sensitive device is placed inside the housing and connected to the first conductor via the first wire.

10. The device with a sealing structure as claimed in claim 9, characterized in that: The shell comprises an upper beam, a lower beam and an "O"-shaped middle beam connected to both the upper beam and the lower beam; the cross section of the shell is in an "I" shape.

11. The device with a sealing structure as claimed in claim 10, characterized in that: The limiting cover head is screwed to the shell.

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