Nitrogen inflation seat of infrared night vision device
By designing a specific nitrogen inflatable seat for infrared night vision instruments and using specific structures to achieve efficient connection and positioning and fixing, the problems of low efficiency and poor stability of existing inflatable devices are solved, and the filling effect and service life of the equipment are improved.
Patent Information
- Application Number
- CN202422042637.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The existing nitrogen inflatable devices of infrared night vision instruments lack special design, which leads to low inflation efficiency, difficulty in guaranteeing stability and accuracy, and is prone to air leakage and mildew problems in humid or humid environments.
A nitrogen inflatable seat for infrared night vision instruments is designed to achieve efficient nitrogen connection and positioning and fixing functions through specific structures such as the combination of connecting grooves, bosses and inflatable heads, ensuring the stability and accuracy of inflation.
It improves the stability, accuracy and efficiency of nitrogen filling, reduces the risk of air leakage, adapts to different environmental conditions, and extends the service life of infrared night vision devices.
Smart Images
Figure CN222937621U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of infrared night vision devices, and particularly relates to a nitrogen gas filling seat for an infrared night vision device. Background Art
[0002] Visible light is very weak at night. In order to facilitate people's observation and exploration at night, infrared night vision devices are often used. Common infrared night vision devices mostly generate infrared rays through infrared generators and rely on optical lenses to receive the reflected infrared radiation to form images for users to view.
[0003] The optical lenses of common infrared night vision devices not only have weak anti-seismic and anti-drop performance, but also when the infrared night vision device is used in an environment with humid air, high moisture, and a lot of dew, the water vapor in the air easily causes the optical lens to mildew, affecting its use. In this regard, some infrared night vision devices can be filled with inert gases such as nitrogen to effectively improve the anti-seismic performance of the optical lens and block the water vapor to a certain extent to reduce the probability of its mildew.
[0004] Currently, when filling nitrogen into an infrared night vision device, there is often a lack of a specially designed filling seat for it. The existing filling method is relatively simple and usually uses a general filling interface, which cannot be perfectly adapted to the infrared night vision device, resulting in low filling efficiency and difficulty in ensuring the stability and accuracy of filling. The existing filling connection structure has not been optimized for the characteristics of the infrared night vision device. For example, it does not distinguish the requirements of different connection parts and cannot meet the efficient connection between the external nitrogen gas source and the infrared night vision device. This makes it easy to have problems such as loose connection and air leakage during the filling process, affecting the filling effect. When filling nitrogen into an infrared night vision device, the existing devices usually lack an effective positioning and fixing function. This makes the infrared night vision device easy to shake or shift during the filling process, affecting the accuracy and stability of filling, and also increasing the operation difficulty and risk in a low-light environment, resulting in filling failure or damage to the infrared night vision device. Summary of the Utility Model
[0005] To solve the problems raised in the above background art. The nitrogen gas filling seat of the infrared night vision device of the utility model has a simple structure. Through specific structural design, it realizes the efficient connection with the external nitrogen gas source and the infrared night vision device, improves the filling stability, accuracy and efficiency, and at the same time has a positioning and fixing function to ensure the nitrogen filling effect of the infrared night vision device.
[0006] To achieve the above object, the present utility model provides the following technical solution: A nitrogen gas filling seat for an infrared night vision device, comprising a seat body. At the upper end of the middle part of the seat body, there is a first connecting groove recessed inward. In the middle of the first connecting groove, there is a first boss protruding upward with a hollow inner circumference. At the upper end of the first boss, there is a second boss with a hollow inner circumference that matches the first boss. At the upper end of the second boss, there is an inflation head whose shape matches that of the first boss. The inner circumference of the inflation head is provided with an inflation channel that penetrates through the inflation head. At the lower end of the middle part of the seat body, there is a second connecting groove recessed inward. In the middle of the second connecting groove, there is a third boss protruding downward with a hollow inner circumference. The inner circumferences of the third boss, the second boss, and the first boss are connected and communicate with the inflation channel to form an intake channel.
[0007] As a further elaboration of this technical solution:
[0008] Preferably, both the first connecting groove and the second connecting groove are circular ring-shaped. The depth of the first connecting groove recessed inward is less than that of the second connecting groove recessed inward. The width of the first connecting groove is less than that of the second connecting groove. The diameter of the first boss is greater than that of the third boss.
[0009] Preferably, the height of the third boss protruding downward is flush with the lower end surface of the seat body. The height of the first boss protruding upward is higher than the upper end surface of the seat body. The outer diameter of the second boss is less than the outer diameter of the first boss and greater than the outer diameter of the upper boss. The height of the second boss is less than that of the third boss.
[0010] Preferably, the inflation head is cylindrical. In the middle of its upper end, there is a circular air outlet communicating with the inflation channel. The outer diameter of the inflation head is greater than the outer diameter of the first boss.
[0011] Preferably, the cross-section of the intake channel is circular. The intake channel extends upward to the middle of the inner circumference of the inflation head. On the inner circumference of the intake channel in the middle of the seat body, there is a first annular boss. In the middle of the inflation channel of the inflation head, there is a second annular boss. The inflation channel at the upper end of the second annular boss is in the shape of a frustum with a gradually decreasing inner diameter. The second connecting groove and the third boss cooperate with each other to connect the external nitrogen gas source with the intake channel. The first connecting groove, the first boss, the second boss, and the inflation head cooperate with each other to connect the air outlet with the infrared night vision device to be inflated, so that nitrogen gas fills the infrared night vision device to be inflated via the intake channel, the inflation channel, and the air outlet.
[0012] Preferably, on both the left and right sides of the first connecting groove in the middle of the seat body, there are positioning and fixing holes vertically penetrating through the seat body, which are used for positioning and fixing the infrared night vision device to be inflated when filling it with nitrogen gas.
[0013] Preferably, the diameter of the outer periphery of the first connecting groove is 18.3 mm to 18.7 mm, the diameter of the outer periphery of the first boss is 14.8 mm to 15.2 mm, the diameter of the outer periphery of the second boss is 13.5 mm to 13.9 mm, the diameter of the outer periphery of the second connecting groove is 16.8 mm to 17.2 mm, the diameter of the outer periphery of the third boss is 12.8 mm to 13.2 mm, the depth of the inward depression of the first connecting groove is 1.0 mm to 1.2 mm, the depth of the inward depression of the second connecting groove is 1.4 mm to 1.6 mm, the diameter of the outer periphery of the inflation head is 15.8 mm to 16.2 mm, the vertical height of the seat body is 4.9 mm to 5.1 mm, the vertical heights of the first boss and the second boss are both 1.4 mm to 1.6 mm, the vertical height of the inflation head is 7.4 mm to 7.6 mm, the height from the lower end face of the first annular boss to the lower end face of the seat body is 3.1 mm to 3.3 mm, the height from the lower end face of the second annular boss to the lower end face of the seat body is 9.6 mm to 9.8 mm, the diameter of the circular air outlet is 1.9 mm to 2.1 mm, the depth of the downward extension of the circular air outlet is 1.7 mm to 1.9 mm, the diameter of the outer periphery of the first annular boss is 9.9 mm to 10.1 mm, the thickness is 0.70 mm to 0.80 mm, the diameter of the outer periphery of the second annular boss is 10.4 mm to 10.6 mm, the thickness is 1.40 mm to 1.60 mm, the diameter of the positioning and fixing hole is 2.9 mm to 3.1 mm, and the diameter of the lowermost end of the frustum-shaped inflation channel is 6.9 mm to 7.1 mm.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] First, the structure of the present utility model is simple. By providing the seat body and various components on the seat body to form an air intake channel, nitrogen can be filled into the infrared night vision device to be inflated via the air intake channel, the inflation channel, and the air outlet, meeting the nitrogen filling requirements of the infrared night vision device to ensure the performance and service life of the infrared night vision device.
[0016] Second, the present utility model designs connecting grooves, bosses, and inflation heads with different sizes and shapes. The first connecting groove and the second connecting groove are respectively matched with different components, enabling the external nitrogen gas source to be connected to the air intake channel and the air outlet to be connected to the infrared night vision device to be inflated, realizing an efficient nitrogen filling process, and at the same time optimizing the structural design to adapt to different connection requirements.
[0017] Thirdly, the depth of the first connecting groove of the present utility model recessed inward is less than that of the second connecting groove, the width of the first connecting groove is less than that of the second connecting groove, and the diameter of the first boss is greater than that of the third boss. The overall structural layout is optimized, and through the size design and relative position relationship of each boss and groove, it better adapts to the connection requirements of nitrogen filling.
[0018] Fourthly, the present utility model is provided with positioning and fixing holes for positioning and fixing the infrared night vision device to be inflated when filling it with nitrogen, improving the stability and accuracy of the filling process, ensuring that nitrogen can be accurately filled into the infrared night vision device, and improving the stability and accuracy of filling. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:
[0020] Figure 1 is a schematic diagram of the overall structure of the first angle of the present utility model;
[0021] Figure 2 is a schematic diagram of the overall structure of the second angle of the present utility model;
[0022] Figure 3 is a schematic diagram of the overall structure of the third angle of the present utility model;
[0023] Figure 4 is a schematic diagram of the overall structure of the fourth angle of the present utility model.
[0024] Figure 5 is a schematic cross-sectional structure diagram of a specific embodiment of the present utility model.
[0025] In the figures: 1, seat body; 2, first connecting groove; 3, first boss; 4, second boss; 5, inflation head; 6, inflation channel; 7, second connecting groove; 8, third boss; 9, intake channel; 10, circular air outlet; 11, first annular boss; 12, second annular boss; 13, positioning and fixing hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0027] Such as Figures 1 to 5As shown in the figure, the utility model relates to a nitrogen gas filling seat for an infrared night vision device, which comprises a seat body 1. At the upper end of the middle part of the seat body 1, there is a first connecting groove 2 recessed inward. In the middle of the first connecting groove 2, there is a first boss 3 protruding upward with a hollow inner circumference. At the upper end of the first boss 3, there is a second boss 4 with a hollow inner circumference that matches the first boss 3. At the upper end of the second boss 4, there is an inflation head 5 whose shape matches that of the first boss 3. An inflation channel 6 runs through the inflation head 5 on the inner circumference of the inflation head 5. At the lower end of the middle part of the seat body 1, there is a second connecting groove 7 recessed inward. In the middle of the second connecting groove 7, there is a third boss 8 protruding downward with a hollow inner circumference. The inner circumferences of the third boss 8, the second boss 4, and the first boss 3 are connected and communicate with the inflation channel 6 to form an intake channel 9.
[0028] As Figures 1 to 5 shown in the figure, both the first connecting groove 2 and the second connecting groove 7 are circular. The depth of the first connecting groove 2 recessed inward is less than that of the second connecting groove 7 recessed inward, and the width of the first connecting groove 2 is less than that of the second connecting groove 7. The diameter of the first boss 3 is greater than that of the third boss 8.
[0029] As Figures 1 to 5 shown in the figure, the height of the third boss 8 protruding downward is flush with the lower end surface of the seat body 1. The height of the first boss 3 protruding upward is higher than the upper end surface of the seat body 1. The outer diameter of the second boss 4 is less than the outer diameter of the first boss 3 and greater than the outer diameter of the upper boss, and the height of the second boss 4 is less than that of the third boss 8.
[0030] As Figures 3 to 5 shown in the figure, the inflation head 5 is cylindrical, and in the middle of its upper end, there is a circular air outlet 10 communicating with the inflation channel 6. The outer diameter of the inflation head 5 is greater than the outer diameter of the first boss 3.
[0031] As Figure 5 shown in the figure, the cross-section of the intake channel 9 is circular. The intake channel 9 extends upward to the middle of the inner circumference of the inflation head 5. On the inner circumference of the intake channel 9 in the middle of the seat body 1, there is a first annular boss 11. In the middle of the inflation channel 6 of the inflation head 5, there is a second annular boss 12. The inflation channel 6 at the upper end of the second annular boss 12 is in the shape of a frustum with a gradually decreasing inner diameter. The second connecting groove 7 and the third boss 8 cooperate with each other to connect the external nitrogen gas source with the intake channel 9. The first connecting groove 2, the first boss 3, the second boss 4, and the inflation head 5 cooperate with each other to connect the air outlet with the infrared night vision device to be inflated, so that nitrogen gas fills the infrared night vision device to be inflated through the intake channel 9, the inflation channel 6, and the air outlet.
[0032] As Figures 1 to 5As shown, on both the left and right sides of the first connection groove 2 in the middle of the base body 1, positioning and fixing holes 13 penetrating the base body 1 are vertically provided for positioning and fixing the infrared night vision device to be inflated when nitrogen is filled into the infrared night vision device to be inflated.
[0033] Further, the outer diameter of the first connection groove 2 is 18.3 mm to 18.7 mm, the outer diameter of the first boss 3 is 14.8 mm to 15.2 mm, the outer diameter of the second boss 4 is 13.5 mm to 13.9 mm, the outer diameter of the second connection groove 7 is 16.8 mm to 17.2 mm, the outer diameter of the third boss 8 is 12.8 mm to 13.2 mm, the inward depression depth of the first connection groove 2 is 1.0 mm to 1.2 mm, the inward depression depth of the second connection groove 7 is 1.4 mm to 1.6 mm, the outer diameter of the inflation head 5 is 15.8 mm to 16.2 mm, the vertical height of the base body 1 is 4.9 mm to 5.1 mm, the vertical heights of the first boss 3 and the second boss 4 are both 1.4 mm to 1.6 mm, the vertical height of the inflation head 5 is 7.4 mm to 7.6 mm, the height from the lower end face of the first annular boss 11 to the lower end face of the base body 1 is 3.1 mm to 3.3 mm, the height from the lower end face of the second annular boss 12 to the lower end face of the base body 1 is 9.6 mm to 9.8 mm, the diameter of the circular air outlet 10 is 1.9 mm to 2.1 mm, the depth of the circular air outlet 10 extending downward is 1.7 mm to 1.9 mm, the outer diameter of the first annular boss 11 is 9.9 mm to 10.1 mm, the thickness is 0.70 mm to 0.80 mm, the outer diameter of the second annular boss 12 is 10.4 mm to 10.6 mm, the thickness is 1.40 mm to 1.60 mm, the diameter of the positioning and fixing hole 13 is 2.9 mm to 3.1 mm, and the diameter of the lowermost end of the frustum-shaped inflation channel 6 is 6.9 mm to 7.1 mm.
[0034] In this embodiment, the diameter of the outer periphery of the first connecting groove 2 is 18.4 mm, the diameter of the outer periphery of the first boss 3 is 15.0 mm, the diameter of the outer periphery of the second boss 4 is 13.7 mm, the diameter of the outer periphery of the second connecting groove 7 is 17.0 mm, the diameter of the outer periphery of the third boss 8 is 13.0 mm, the depth of the inward depression of the first connecting groove 2 is 1.1 mm, the depth of the inward depression of the second connecting groove 7 is 1.5 mm, the diameter of the outer periphery of the inflating head 5 is 16.0 mm, the vertical height of the seat body 1 is 5.0 mm, the vertical heights of the first boss 3 and the second boss 4 are both 1.5 mm, the vertical height of the inflating head 5 is 7.5 mm, the height from the lower end surface of the first annular boss 11 to the lower end surface of the seat body 1 is 3.2 mm, the height from the lower end surface of the second annular boss 12 to the lower end surface of the seat body 1 is 9.7 mm, the diameter of the circular air outlet 10 is 2.0 mm, the depth of the downward extension of the circular air outlet 10 is 1.8 mm, the diameter of the outer periphery of the first annular boss 11 is 10.0 mm, the thickness is 0.75 mm, the diameter of the outer periphery of the second annular boss 12 is 10.5 mm, the thickness is 1.50 mm, the diameter of the positioning and fixing hole 13 is 3.0 mm, and the diameter of the lowermost end of the frustum-shaped inflating channel 6 is 7.0 mm.
[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "left", "right", "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.
[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A nitrogen inflator for infrared night vision devices, characterized in that: The invention comprises a seat body, wherein the upper end of the middle part of the seat body is provided with a first connecting groove which is recessed inwardly, the middle part of the first connecting groove is provided with a first boss which is hollow and protrudes upwardly, the upper end of the first boss is provided with a second boss which is hollow and matches the first boss, the upper end of the second boss is provided with an inflation head which matches the first boss in shape, the inner circumference of the inflation head is provided with an inflation channel which runs through the inflation head, the lower end of the middle part of the seat body is provided with a second connecting groove which is recessed inwardly, the middle part of the second connecting groove is provided with a third boss which is hollow and protrudes downwardly in the inner circumference, the inner circumferences of the third boss, the second boss and the first boss are connected and connected with the inflation channel to form an air inlet channel.
2. The nitrogen inflator for infrared night vision device according to claim 1, characterized in that: The first connecting groove and the second connecting groove are both annular, the depth of the first connecting groove is smaller than the depth of the second connecting groove, the width of the first connecting groove is smaller than the width of the second connecting groove, and the diameter of the first boss is larger than the diameter of the third boss.
3. The nitrogen inflator for infrared night vision device according to claim 2, characterized in that: The height of the third boss protruding downward is flush with the lower end surface of the seat body, the height of the first boss protruding upward is higher than the upper end surface of the seat body, the diameter of the outer periphery of the second boss is smaller than the diameter of the outer periphery of the first boss and larger than the diameter of the outer periphery of the upper boss, and the height of the second boss is smaller than the height of the third boss.
4. The nitrogen gas charging seat for infrared night vision device according to claim 3, characterized in that: The inflation head is cylindrical, and a circular air outlet hole connected to the inflation channel is provided in the middle of the upper end thereof. The diameter of the outer circumference of the inflation head is larger than the diameter of the outer circumference of the first boss.
5. The nitrogen inflator for infrared night vision device according to claim 4, characterized in that: The cross-section of the air intake channel is circular, and the air intake channel extends upward to the middle of the inner circumference of the inflation head. A first annular boss is provided on the inner circumference of the air intake channel in the middle of the seat body, and a second annular boss is provided in the middle of the inflation channel of the inflation head. The inflation channel at the upper end of the second annular boss is a frustum-shaped with a gradually decreasing inner diameter. The second connecting groove and the third boss cooperate with each other to connect the external nitrogen gas source with the air intake channel. The first connecting groove, the first boss, the second boss and the inflation head cooperate with each other to connect the air outlet with the infrared night vision device to be inflated, so that the nitrogen can be used to inflate the infrared night vision device to be inflated via the air intake channel, the inflation channel and the air outlet.
6. The nitrogen gas charging seat for infrared night vision device according to claim 5, characterized in that: Positioning and fixing holes penetrating the seat body are vertically arranged on the left and right sides of the first connecting groove in the middle of the seat body, which are used to position and fix the infrared night vision device to be inflated when it is inflated with nitrogen.
7. The nitrogen gas charging seat for infrared night vision device according to claim 6, characterized in that: The diameter of the outer circumference of the first connecting groove is 18.3mm~18.7mm, the diameter of the outer circumference of the first boss is 14.8mm~15.2mm, the diameter of the outer circumference of the second boss is 13.5mm~13.9mm, the diameter of the outer circumference of the second connecting groove is 16.8mm~17.2mm, the diameter of the outer circumference of the third boss is 12.8mm~13.2mm, the depth of the first connecting groove inwardly concave is 1.0mm~1.2mm, the depth of the second connecting groove inwardly concave is 1.4mm~1.6mm, the diameter of the outer circumference of the inflatable head is 15.8mm~16.2mm, the upper and lower heights of the seat body are 4.9mm~5.1mm, the upper and lower heights of the first boss and the second boss are both 1.4mm~1.6mm, and the upper and lower heights of the inflatable head are 7.4 mm~7.6mm, the height of the lower end face of the first annular boss from the lower end face of the seat body is 3.1mm~3.3mm, the height of the lower end face of the second annular boss from the lower end face of the seat body is 9.6mm~9.8mm, the diameter of the circular air outlet is 1.9mm~2.1mm, and the depth of the circular air outlet extending downward is 1.7mm~1.9mm, the diameter of the outer periphery of the first annular boss is 9.9mm~10.1mm, and the thickness is 0.70mm~0.80mm, the diameter of the outer periphery of the second annular boss is 10.4mm~10.6mm, and the thickness is 1.40mm~1.60mm, the diameter of the positioning and fixing hole is 2.9mm~3.1mm, and the diameter of the lower end of the frustum-shaped inflation channel is 6.9mm~7.1mm.