CN208937567U - A kind of hydrogen gas sensor - Google Patents
A kind of hydrogen gas sensor Download PDFInfo
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- CN208937567U CN208937567U CN201821780134.XU CN201821780134U CN208937567U CN 208937567 U CN208937567 U CN 208937567U CN 201821780134 U CN201821780134 U CN 201821780134U CN 208937567 U CN208937567 U CN 208937567U
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- shell
- dust
- air ventilation
- bursting diaphragm
- hydrogen gas
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Abstract
This application discloses a kind of hydrogen gas sensors, comprising: shell offers venthole on the shell；It is tightly connected with the inner surface of the shell, and covers the dust-proof air ventilation film of the venthole；The bursting diaphragm being covered on the dust-proof air ventilation film, the bursting diaphragm are fixed on the housing；The connector being linked together with the shell.Dust-proof air ventilation film and bursting diaphragm have been integrated on shell by above-mentioned hydrogen gas sensor, and are no longer assembled on probe, so avoiding encapsulation operation, simultaneously it is also possible that the assembly difficulty of probe and shell is minimized, production cost is thereby reduced, and improve product yield.
Description
Technical field
The utility model relates to sensor technical field, in particular to a kind of hydrogen gas sensor.
Background technique
Clean energy vehicle has entered the epoch an of diversification, diversification, multidimensional development, hydrogen cell automobile at present
It is one of them important, ideal novel product, major motor corporation has accordingly in terms of hydrogen cell automobile research and development
Investment.Hydrogen is the primary raw material of hydrogen fuel fuel cell, its explosion limit is 4.1%~74.2% (volumetric concentration),
Therefore the hydrogen concentration level of the main positions using hydrogen gas sensor real time monitoring hydrogen fuel cell automobile is needed.Hydrogen at present
Probe encapsulation and the overall package of gas sensor are separation design, i.e. the probe of hydrogen gas sensor, dust-proof air ventilation film and anti-
After the assembling of quick-fried cap is integral welding on circuit boards, finally in the shell of hydrogen gas sensor, using casting glue or close
The mode of seal is packaged.
The design of this probe and shell-separating, first production technology include the steps that probe encapsulation, which can lead
Cause the increase of cost；Secondly the separation design of probe and shell, needs higher assembly precision just and can guarantee the dust-proof of product
Waterproof performance causes product yield lower.
In addition, the wire harness connector for being electrically connected with hydrogen gas sensor, is arranged on shell using assembly technology,
The assembly technology equally will increase the complexity of hydrogen gas sensor, and the production cost of hydrogen gas sensor is enabled to rise.
Utility model content
In view of this, the present invention provides a kind of hydrogen gas sensors, are improved by structure, simplify assembler
Skill reduces production cost, improves the yield of product.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of hydrogen gas sensor, comprising:
Shell offers venthole on the shell；
It is tightly connected with the inner surface of the shell, and covers the dust-proof air ventilation film of the venthole；
The bursting diaphragm being covered on the dust-proof air ventilation film, the bursting diaphragm are fixed on the housing；
The connector being linked together with the shell.
Preferably, in above-mentioned hydrogen gas sensor, tubular protrusion, the tubular protrusion are provided on the inner surface of the shell
It being connect with the housing seal, the dust-proof air ventilation film and the bursting diaphragm are arranged in the inner cavity of the tubular protrusion, and
The edge of the dust-proof air ventilation film and the bursting diaphragm is bonded with the inner wall of the tubular protrusion.
Preferably, in above-mentioned hydrogen gas sensor, ring is provided between the dust-proof air ventilation film and the inner surface of the shell
Shape rubber sheet gasket, the venthole are connected to the inner hole of the ring-shaped rubber gasket, the dust-proof air ventilation film and the bursting diaphragm
By the sealed connection for applying pressure realization and the shell to the ring-shaped rubber gasket.
Preferably, in above-mentioned hydrogen gas sensor, snap ring, the snap ring position are fixedly installed on the inner wall of the tubular protrusion
Apply pressure in the top of the bursting diaphragm, and to the bursting diaphragm.
Preferably, in above-mentioned hydrogen gas sensor, the bursting diaphragm is the metallic particles sintered body of plate.
Preferably, in above-mentioned hydrogen gas sensor, the internal diameter of the tubular protrusion is a, and the diameter of the venthole is b, and
And a=1.5b.
Hydrogen gas sensor provided by the utility model enables dust-proof air ventilation film seal while opening up venthole on shell
Connection on an interior surface of the housing, and covers venthole, so that the gases such as hydrogen can pass through air inlet and dust-proof air ventilation
Film and enter in shell, and then detected by probe, and the impurity such as dust are then blocked under the cooperation of shell and dust-proof air ventilation film
It cuts except dust-proof air ventilation film, while bursting diaphragm also being enabled to be covered on dust-proof air ventilation film to provide protection.Above-mentioned hydrogen sensing
Dust-proof air ventilation film and bursting diaphragm have been integrated on shell by device, and are no longer assembled on probe, so encapsulation operation is avoided,
Simultaneously it is also possible that the assembly precision of probe and shell is minimized, production cost is thereby reduced, and improve product
Yield.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 be hydrogen gas sensor provided by the embodiment of the utility model in shell, ring-shaped rubber gasket, dust-proof air ventilation film,
The structural schematic diagram of bursting diaphragm, snap ring and tubular male cooperation；
Fig. 2 is the top view of shell and connector；
Fig. 3 is the A-A cross-sectional view of Fig. 2.
In Fig. 1-Fig. 3:
1- shell, 2- dust-proof air ventilation film, 3- bursting diaphragm, 4- tubular protrusion, 5- ring-shaped rubber gasket, 6- snap ring, 7- ventilation
Hole, 8- connector.
Specific embodiment
The utility model provides a kind of hydrogen gas sensor, is improved by structure, simplifies assembly technology, reduce life
Cost is produced, the yield of product is improved.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-Figure 3, hydrogen gas sensor provided by the embodiment of the utility model mainly includes shell 1, dust-proof air ventilation
Film 2 and bursting diaphragm 3, wherein venthole 7 is offered on shell 1, dust-proof air ventilation film 2 is sealedly connected on the inner surface of shell 1,
Bursting diaphragm 3 is covered on dust-proof air ventilation film 2.Such set-up mode that dust-proof air ventilation film 2 and bursting diaphragm 3 are integrated on shell 1,
The assembling with probe is avoided, enables probe be provided separately within inside shell 1, so avoiding encapsulation operation, reduces and be produced into
This, while while guaranteeing dustproof and waterproof performance, it is also possible that the assembly precision of probe and shell 1 is minimized, thus
Improve product yield.
It meanwhile as shown in Figures 2 and 3, further include being linked together with shell 1 in hydrogen gas sensor provided in this embodiment
Plug connector 8, i.e., plug connector 8 is connected on shell 1, and with shell 1 be integrally formed, and the plug connector 8 preferably produce
In standard plug connector common, that meet national standards.In the present embodiment, by the connector digital-to-analogue of standard in conjunction with shell digital-to-analogue
For an entirety, connector 8 and shell 1 is enabled to be integrally formed by the processing method of injection molding, so that the connector 8 of standard be integrated
In the side of shell 1, to replace the structure of harness connection connector.Such set-up mode can simplify the dress of hydrogen gas sensor
It with process flow, reduces costs, reduces harness influence caused by the electric property of product, increase the steady of product batches
It is qualitative.
In order to advanced optimize technical solution, in hydrogen gas sensor provided in this embodiment, as shown in Figure 1, shell 1 is interior
Tubular protrusion 4 is provided on surface, tubular protrusion 4 is tightly connected with shell 1, and dust-proof air ventilation film 2 and bursting diaphragm 3 are arranged in tubular
In the inner cavity of protrusion 4, and the edge of dust-proof air ventilation film 2 and bursting diaphragm 3 is bonded with the inner wall of tubular protrusion 4.Tubular is set
Protrusion 4, while also dust-proof air ventilation film 2 and bursting diaphragm 3 being arranged in the inner cavity of tubular protrusion 4,4 pairs of tubular protrusion can be made anti-
Dirt ventilated membrane 2 and bursting diaphragm 3 play precise positioning, more outstanding to improve dust-proof air ventilation film 2 and bursting diaphragm 3 and shell 1
Connectivity robustness and reliability.Meanwhile in order to further increase the effect of sealed connection, further preferably tubular protrusion 4 is close with shell 1
The edge of envelope connection, dust-proof air ventilation film 2 and bursting diaphragm 3 is bonded with the inner wall of tubular protrusion 4, to enable provided in this embodiment
The dustproof and waterproof grade of hydrogen gas sensor is significantly improved.
Preferably, ring-shaped rubber gasket 5, venthole 7 and ring are provided between dust-proof air ventilation film 2 and the inner surface of shell 1
The inner hole of shape rubber sheet gasket 5 is connected to, as shown in Figure 1, dust-proof air ventilation film 2 and bursting diaphragm 3 are pressed by applying to ring-shaped rubber gasket 5
Power realizes the sealed connection with shell 1.On the basis of above structure, realize what dust-proof air ventilation film 2 and shell 1 were tightly connected
Mode can there are many selections, for better lift-off seal effect in the present embodiment, between dust-proof air ventilation film 2 and shell 1
It is additionally arranged the ring-shaped rubber gasket 5 that flexible deformation can occur, it, can be sufficient by the flexible deformation of ring-shaped rubber gasket 5
Dust-proof air ventilation film 2 and shell 1 are sealed.In addition, dust-proof air ventilation film 2 and shell 1 can also be realized by way of bonding
It is tightly connected.
Specifically, the snap ring 6 is located at bursting diaphragm 3 as shown in Figure 1, being fixedly installed snap ring 6 on the inner wall of tubular protrusion 4
Top, and pressure is applied to bursting diaphragm 3, so that ring-shaped rubber gasket 5 is squeezed and occurred by bursting diaphragm 3 and dust-proof air ventilation film 2
Deformation, to realize the sealed connection of dust-proof air ventilation film 2 and shell 1.The snap ring 6 can not only be to bursting diaphragm 3 and dust-proof air ventilation
Film 2 applies pressure, also can carry out axially position to bursting diaphragm 3 and dust-proof air ventilation film 2.
Specifically, bursting diaphragm 3 is preferably the metallic particles sintered body of plate.The bursting diaphragm 3 of such material has better
Explosion-proof effect.
As shown in Figure 1, in the present embodiment, the further preferably internal diameter of tubular protrusion 4 is a, and the diameter of venthole 7 is b, and a
=1.5b, the i.e. internal diameter of tubular protrusion 4 are 1.5 times of 7 diameter of venthole, while the wall thickness of further preferably tubular protrusion 4 is c, card
The width of ring 6 is e, setting height is d, and the outer diameter of ring-shaped rubber gasket 5 is a, with a thickness of h, the diameter of dust-proof air ventilation film 2 be a,
With a thickness of g, the diameter of bursting diaphragm 3 is a, with a thickness of f, wherein d is slightly less than the sum of h, g and f, to guarantee that snap ring 6 can be normal
Pressure is applied to bursting diaphragm 3, dust-proof air ventilation film 2 and ring-shaped rubber gasket 5.
To sum up, the hydrogen gas sensor of above structure provided in this embodiment avoids between shell 1 and probe because assembly misses
Dustproof and waterproof grade problem not up to standard, improves product qualification rate caused by difference, reduces manufacture craft difficulty.Meanwhile it adopting
The design of wire harness connector is replaced with the design that the connector 8 of standard is integrated in shell 1, additionally it is possible to reduce harness to electronic device
The influence of performance, simplified assembling process reduce production cost.
Each part is described in a progressive manner in this specification, what the structure of each part stressed is
With the difference of existing structure, the entirety and part-structure of hydrogen gas sensor can pass through the structure of the above-mentioned multiple portions of combination
It obtains.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a kind of hydrogen gas sensor characterized by comprising
Shell offers venthole on the shell；
It is tightly connected with the inner surface of the shell, and covers the dust-proof air ventilation film of the venthole；
The bursting diaphragm being covered on the dust-proof air ventilation film, the bursting diaphragm are fixed on the housing；
The connector being linked together with the shell.
2. hydrogen gas sensor according to claim 1, which is characterized in that it is convex to be provided with tubular on the inner surface of the shell
It rises, the tubular protrusion is connect with the housing seal, and the dust-proof air ventilation film and bursting diaphragm setting are convex in the tubular
In the inner cavity risen, and the edge of the dust-proof air ventilation film and the bursting diaphragm is bonded with the inner wall of the tubular protrusion.
3. hydrogen gas sensor according to claim 2, which is characterized in that the interior table of the dust-proof air ventilation film and the shell
Ring-shaped rubber gasket is provided between face, the venthole is connected to the inner hole of the ring-shaped rubber gasket, the dust-proof air ventilation
Film and the bursting diaphragm are by realizing the sealed connection with the shell to ring-shaped rubber gasket application pressure.
4. hydrogen gas sensor according to claim 3, which is characterized in that be fixedly installed on the inner wall of the tubular protrusion
Snap ring, the snap ring is located at the top of the bursting diaphragm, and applies pressure to the bursting diaphragm.
5. hydrogen gas sensor according to claim 1, which is characterized in that the bursting diaphragm is that the metallic particles of plate is sintered
Body.
6. hydrogen gas sensor according to claim 2, which is characterized in that the internal diameter of the tubular protrusion is a, the ventilation
The diameter in hole is b, and a=1.5b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780134.XU CN208937567U (en) | 2018-10-23 | 2018-10-23 | A kind of hydrogen gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780134.XU CN208937567U (en) | 2018-10-23 | 2018-10-23 | A kind of hydrogen gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208937567U true CN208937567U (en) | 2019-06-04 |
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ID=66726673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821780134.XU Active CN208937567U (en) | 2018-10-23 | 2018-10-23 | A kind of hydrogen gas sensor |
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| CN (1) | CN208937567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037475A (en) * | 2020-08-05 | 2020-12-04 | 苏州赛智达智能科技有限公司 | Explosion-proof gas leakage alarm |
| EP4195336A1 (en) * | 2021-12-09 | 2023-06-14 | Robert Bosch GmbH | Electrical apparatus for use in a hydrogen system |
-
2018
- 2018-10-23 CN CN201821780134.XU patent/CN208937567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037475A (en) * | 2020-08-05 | 2020-12-04 | 苏州赛智达智能科技有限公司 | Explosion-proof gas leakage alarm |
| EP4195336A1 (en) * | 2021-12-09 | 2023-06-14 | Robert Bosch GmbH | Electrical apparatus for use in a hydrogen system |
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