Balanced air pressure packaging device with wire connection intelligent gas sensor control box

Abstract

The utility model relates to the technical field of sensors, in particular to a balanced air pressure packaging device with a wire connection intelligent gas sensor control box, which is suitable for application scenes such as vehicles and industry. The air pressure balancing device is packaged on a wire and comprises a metal sleeve, a breathable film and a sealing plug, the sealing plug is formed by splicing a left half part and a right half part, the wire penetrates through a through hole in the sealing plug, the metal sleeve is arranged on the sealing plug in a sleeving mode, and the breathable film is arranged in or on the outer side of the sealing plug to form a breathable structure. The breathable film, the sealing plug, the metal sleeve and the like are riveted and packaged and are connected with the intelligent gas sensor control box, so that the purpose of balancing the air pressure in the control box caused by temperature change is achieved, and the potential failure risk is reduced.

Description

Technical Field

[0001] The utility model relates to a packaging device, in particular to a balanced air pressure packaging device with a wire connected to an intelligent gas sensor control box. Background Art

[0002] The level of intelligence in the automotive and industrial fields is getting higher and higher, requiring sensors to complete information collection, processing and transmission by themselves. The industry usually adopts the packaging method of sensor probe + wiring harness + control unit. In actual application, the sensor control unit is mostly sealed by sealant or welding to achieve shell sealing, and a part of the air will be sealed inside. When the internal air pressure of the control unit changes due to changes in external temperature, the control unit housing and cover will be subjected to cyclic stress fatigue caused by the pressure difference. During long-term use, the appearance of the control unit plastic housing and cover will be deformed, or potential sealing leakage channels will appear, causing water ingress failure. Utility Model Content

[0003] The utility model aims to solve the above defects and provides a balanced air pressure packaging device with a wire connected to an intelligent gas sensor control box.

[0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the utility model to solve its technical problems is: this balanced air pressure packaging device with a wire connected to the intelligent gas sensor control box is packaged on the wire, and a plurality of wire cores are arranged in the wire. The balanced air pressure packaging device includes a metal sleeve, a breathable membrane and a sealing plug. The sealing plug is assembled from a left half and a right half. The wire passes through the through hole on the sealing plug, and the metal sleeve is sleeved on the sealing plug. A breathable membrane is arranged inside or outside the sealing plug to form a breathable structure.

[0005] According to another embodiment of the utility model, the air pressure balance responsiveness of the device is further related to the length of the wire, and the distance between the device and the control box does not exceed 1000mm, preferably ≤500mm.

[0006] According to another embodiment of the utility model, the wire is further divided into two sections, and the two sections of the wire are fixed by crimping a lead joint, the lead joint is clamped by a limiting structure composed of sealing plugs assembled on the left and right sides, and a breathable film is sleeved on the outer side of the sealing plug. After the overall assembly, the two ends of the metal sleeve are riveted to form a sealing structure, and the gaps formed between the multiple twisted wire cores in the wire, the middle joint of the sealing plug, the breathable film and the through holes on the metal sleeve form a breathable structure.

[0007] According to another embodiment of the utility model, it further includes inserting a wire with a portion of the plastic coating removed into the through hole of the sealing plug, and after the sealing plugs on the left and right sides are assembled and connected, a channel for ventilation is formed in the middle, and the portion of the wire with the plastic coating removed is located at the channel, and a breathable film is sleeved on the outer side of the sealing plug. After the overall assembly, the two ends of the metal sleeve are riveted to form a sealing structure, and the gaps formed between the multiple twisted wire cores in the wire, the channel for ventilation, the breathable film and the through holes on the metal sleeve form a breathable structure.

[0008] According to another embodiment of the utility model, it further includes inserting a wire with part of the plastic skin removed into the through hole of the sealing plug, and after assembling and connecting the sealing plugs on the left and right sides, a channel for ventilation is formed in the middle, and a breathable membrane and a breathable membrane support tube are sleeved on the countersunk hole of the sealing plug on the right side, and the breathable membrane support tube supports the breathable membrane distributed in the countersunk hole. After the overall assembly, the two ends of the metal sleeve are riveted to form a sealing structure, and the gaps formed between the multiple twisted wire cores in the wire, the channel for ventilation, the top through hole of the breathable membrane support tube and the breathable membrane form a breathable structure.

[0009] According to another embodiment of the utility model, the left half and the right half of the sealing plug are further included. After the left half and the right half are connected, a channel for ventilation is provided between the left half and the right half, and a ventilation boss is provided on the right half. The ventilation boss corresponds to the countersunk hole of the left half to form a breathable membrane support structure. The breathable membrane is accommodated in the countersunk hole of the left half of the sealing plug. The left half is also provided with a transverse long through hole. After the overall assembly, the two ends of the riveted metal sleeve form a sealing structure. The gaps formed between the multiple twisted wire cores in the conductor, the channel for ventilation, the long through hole and the breathable membrane form a breathable structure.

[0010] According to another embodiment of the utility model, the device can also be integrated with the sensor probe body.

[0011] The beneficial effect of the utility model is that the balanced air pressure packaging device with wires connected to the intelligent gas sensor control box is suitable for automotive and industrial applications. The air permeable membrane, sealing plug, metal sleeve and the like are riveted and packaged to form an air pressure balance structure, which solves the potential failure caused by the change of air pressure in the sealed cavity due to temperature changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 is a structural schematic diagram of a stereogram of the first embodiment;

[0015] Figure 3 is a structural schematic diagram of a front cross-sectional view of riveting in the first embodiment;

[0016] Figure 4 is a structural schematic diagram of a cross-sectional view after riveting in the first embodiment;

[0017] Figure 5 is a schematic structural diagram of a cross-sectional view of the second embodiment;

[0018] Figure 6 is a structural schematic diagram of a stereogram of Embodiment 3;

[0019] Figure 7 is a schematic structural diagram of a cross-sectional view of embodiment 3;

[0020] Figure 8 is a schematic structural diagram of a stereogram of a fourth embodiment;

[0021] Fig. 9 is a schematic structural diagram of a cross-sectional view of a fourth embodiment;

[0022] Wherein: 1. metal sleeve, 2. breathable membrane, 3. sealing plug, 4. wire, 5. lead connector, 6. channel, 7. breathable membrane support tube, 8. breathable boss, 9. long through hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. The embodiments in the basic utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-9 As shown, the balanced air pressure packaging device is packaged on the wiring harness, one end of which is connected to the control unit and the other end is connected to the sensor probe. The number of probes and wires is not limited and can be freely changed according to the packaging structure. The basis for the realization of the balanced air pressure structure is that although the multi-strand winding wire is wrapped with a plastic skin on the outside, there are still gaps between each wire core inside, which can serve as a channel for gas exchange and play a role in balancing the air pressure. Figure 1-8 As shown, the balanced air pressure packaging structure is packaged on the wire 4, and a plurality of wire cores are arranged inside the wire 4. The balanced air pressure packaging structure includes a metal sleeve 1, a breathable membrane 2 and a sealing plug 3. The sealing plug 3 is composed of a left half and a right half assembled together. The wire 4 passes through the through hole on the sealing plug 3, and the metal sleeve 1 is sleeved on the sealing plug 3. A breathable membrane 2 is arranged inside or outside the sealing plug 3 to form a breathable structure. The breathable structure solves the potential failure caused by the change of air pressure in the sealing cavity due to temperature change.

[0025] The balanced air pressure packaging device with wires connected to the intelligent gas sensor control box is not arranged on the control box housing but on the wiring harness. It is connected to the completely sealed control box through the internal ventilation of the multi-strand twisted wires to achieve air pressure balance.

[0026] The air pressure balance responsiveness of the device is related to the length of the wire. The distance between the device and the control box shall not exceed 1000mm, and preferably ≤500mm. Embodiment 1:

[0027] like Figure 2 , 3 As shown in Figure 4, the balanced air pressure packaging device includes a metal sleeve 1, a breathable membrane 2 and a sealing plug 3. The wire 4 is divided into two sections, and the two sections of the wire are fixed by crimping with a lead connector 5. The lead connector 5 is clamped by a limiting structure composed of the sealing plugs 3 assembled on the left and right sides. The outer side of the sealing plug 3 is sleeved with a breathable membrane 2. After the overall assembly, the two ends of the metal sleeve 1 are riveted to form a sealing structure. The gaps between the multi-strand twisted wire cores in the wire 4, the middle joint of the sealing plug 3, the breathable membrane 2 and the through holes on the metal sleeve 1 form a breathable structure. The wire 4 is divided into two, and the cut part is connected by a lead connector 5. The two ends of the lead connector are respectively crimped with the wire. The lead connector 5 is limited and clamped by the sealing plug 3 assembled by the left half and the right half. The outer side of the sealing plug 3 is sleeved with a breathable membrane 2. At this time, the breathable membrane 2 is a tubular breathable membrane, and then the metal sleeve 1 is sleeved, and the two ends of the metal sleeve 1 are riveted to form a sealing structure. The gap 10 formed between the middle joint of the sealing plug 3, i.e., the lead connector 5, the breathable membrane 2 and the through hole on the metal sleeve 1 form a breathable structure. The gas exchange path of this structure is that the gap 10 formed by the limit lead connector 5 between the multi-strand wire core and the sealing plug becomes a breathable channel, and the breathable channel forms exchange through the small holes reserved in the breathable membrane and the metal sleeve. Embodiment 2:

[0028] like Figure 5 As shown in the figure, a wire 4 with part of the plastic skin removed is inserted into the through hole of the sealing plug 3. After the sealing plugs 3 on the left and right sides are assembled and docked, a channel 6 for ventilation is formed in the middle. The part of the wire 4 with the plastic skin removed is located at the channel 6. The outer side of the sealing plug 3 is sleeved with a breathable membrane 2. After the overall assembly, the two ends of the metal sleeve 1 are riveted to form a sealing structure. The gaps between the multi-strand twisted wire cores in the wire 4, the channel 6 for ventilation, the breathable membrane 2 and the through holes on the metal sleeve 1 form a breathable structure. The two ends of the metal sleeve 1 are parallel or conically riveted and sealed. The gas exchange path of this structure is the channel 6 between the multi-strand wire core and the sealing plug, and the channel 6 forms an exchange through the small holes reserved in the breathable membrane and the metal sleeve 1. Embodiment three:

[0029] like Figure 6 ,7 As shown in the figure, a wire 4 with part of the plastic skin removed is inserted into the through hole of the sealing plug 3. After the sealing plugs 3 on the left and right sides are assembled and connected, a channel 6 for ventilation is formed in the middle. A breathable membrane 2 and a breathable membrane support tube 7 are sleeved on the countersunk hole of the sealing plug 3 on the right. The breathable membrane support tube 7 supports the breathable membrane 2 distributed in the countersunk hole. After the overall assembly, the two ends of the metal sleeve 1 are riveted to form a sealing structure. The gaps formed between the multi-strand twisted wire cores in the wire 4, the channel 6 for ventilation, the top through hole of the breathable membrane support tube 7 and the breathable membrane 2 form a breathable structure. Embodiment 4:

[0030] like Figure 8 , 9 As shown in the figure, after the left half and the right half of the sealing plug 3 are connected, a channel 6 for ventilation is provided between the left half and the right half, and a ventilation boss 8 is provided on the right half. The ventilation boss 8 and the countersunk hole of the left half form a breathable membrane support structure corresponding to each other. The breathable membrane 2 is accommodated in the countersunk hole of the left half of the sealing plug 3. The left half is also provided with a transverse long through hole 9. After the overall assembly, the two ends of the riveted metal sleeve 1 form a sealing structure, and the gaps formed between the multiple twisted wire cores in the conductor 4, the channel 6 for ventilation, the long through hole 9 and the breathable membrane 2 form a breathable structure.

[0031] The gas exchange path of the structure is a channel 6 through a breathable boss 8, through a breathable membrane 2, and a long through hole 9 to form an exchange.

[0032] The number of the wires 4 in the above embodiments 1-3 is 8, and the number of the wires 4 in embodiment 4 is 5. The number of wires is not limited, and the packaging structure can be adjusted according to the number of wires.

[0033] In the above embodiment, the leakage of 19 strands of AWG 20# copper wire with a length of 200 mm was measured at a test pressure of 40 kPa and was 0.1-0.2 ml / min. For the sealed cavity formed in the control unit, this leakage rate can meet the use requirements.

[0034] The structure of the above embodiment can also be integrated with the sensor probe body.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A balanced gas pressure packaging device with a wire connected to an intelligent gas sensor control box, characterized in that: The balanced air pressure packaging device comprises a metal sleeve (1), a breathable membrane (2) and a sealing plug (3); the sealing plug (3) is composed of a left half and a right half assembled together; the wire (4) passes through a through hole on the sealing plug (3); the metal sleeve (1) is sleeved on the sealing plug (3); and the breathable membrane (2) is provided inside or outside the sealing plug (3) to form a breathable structure.

2. A balanced air pressure packaging device with a wire-connected intelligent gas sensor control box as claimed in claim 1, characterized in that: The air pressure balance responsiveness of the device is related to the length of the wire, and the distance between the device and the control box does not exceed 1000mm.

3. A balanced air pressure packaging device with a wire-connected intelligent gas sensor control box as claimed in claim 1, characterized in that: The wire (4) is divided into two sections, and the two sections of the wire are crimped and fixed by a lead connector (5). The lead connector (5) is clamped by a limit structure composed of sealing plugs (3) assembled on the left and right sides. A breathable membrane (2) is sleeved on the outer side of the sealing plug (3). After the whole is assembled, the two ends of the metal sleeve (1) are riveted to form a sealing structure. The gaps formed between the multiple strands of the twisted wire cores in the wire (4), the middle joint of the sealing plug (3), the breathable membrane (2) and the through holes on the metal sleeve (1) form a breathable structure.

4. A balanced air pressure packaging device with a wire-connected intelligent gas sensor control box as claimed in claim 1, characterized in that: A conductor (4) with a portion of its plastic coating removed is inserted into the through hole of the sealing plug (3). After the sealing plugs (3) on the left and right sides are assembled and connected, a ventilation channel (6) is formed in the middle. The portion of the conductor (4) with the plastic coating removed is located at the channel (6). A breathable membrane (2) is sleeved on the outer side of the sealing plug (3). After the whole is assembled, the two ends of the metal sleeve (1) are riveted to form a sealing structure. The gaps formed between the multiple strands of the twisted wire cores in the conductor (4), the ventilation channel (6), the breathable membrane (2) and the through holes on the metal sleeve (1) form a breathable structure.

5. A balanced air pressure packaging device with a wire-connected intelligent gas sensor control box as claimed in claim 1, characterized in that: A conductor (4) with a portion of its plastic coating removed is inserted into the through hole of the sealing plug (3). After the sealing plugs (3) on the left and right sides are assembled and connected, a passage (6) for ventilation is formed in the middle. A breathable membrane (2) and a breathable membrane support tube (7) are sleeved on the countersunk hole of the sealing plug (3) on the right side. The breathable membrane support tube (7) supports the breathable membrane (2) distributed in the countersunk hole. After the overall assembly, the two ends of the metal sleeve (1) are riveted to form a sealing structure. The gaps formed between the multiple strands of the twisted wire cores in the conductor (4), the passage (6) for ventilation, the top through hole of the breathable membrane support tube (7) and the breathable membrane (2) form a breathable structure.

6. A balanced air pressure packaging device with a wire-connected intelligent gas sensor control box as claimed in claim 1, characterized in that: After the left and right halves of the sealing plug (3) are butt-jointed, a passage (6) for ventilation is provided between the left and right halves, a ventilation boss (8) is provided on the right half, and the ventilation boss (8) corresponds to the countersunk hole of the left half to form a ventilation membrane support structure, the ventilation membrane (2) is accommodated in the countersunk hole of the left half of the sealing plug (3), and a transverse long through hole (9) is also provided on the left half. After the whole is assembled, the two ends of the riveted metal sleeve (1) form a sealing structure, and the gaps formed between the multiple strands of the twisted wire cores in the conductor (4), the passage (6) for ventilation, the long through hole (9) and the ventilation membrane (2) form a ventilation structure.

7. A balanced gas pressure packaging device with a wire-connected intelligent gas sensor control box as claimed in claim 1, characterized in that: The device may also be fused with the sensor probe body.

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