阅读说明：本技术 小型化充气装置 (Miniaturized aerating device ) 是由 黄燕群 段志蓥 陈锡春 于 2020-07-28 设计创作，主要内容包括：本发明属于机械结构领域,具体涉及一种小型化充气装置,适用于需充气装置密封要求的仪器,所述充气装置采用小型化设计,体积小,组装后带安装外螺纹,通过外螺纹固定在需充气密封的仪器壳体上,解决了充气装置的小型化的问题。该小型化充气装置包括：一字口螺帽盖、弹簧固定螺母、弹簧、外螺纹固定件、橡胶平垫、T型顶针等组成,本发明采用了模块化设计,结构布局小巧,外观造型美观,操作方便,特别适用于光学仪器充气密封,具有较高的应用价值。(The invention belongs to the field of mechanical structures, and particularly relates to a miniaturized inflating device which is suitable for instruments requiring the sealing requirement of the inflating device. This miniaturized aerating device includes: the invention adopts the modular design, has small and exquisite structural layout, attractive appearance and convenient operation, is particularly suitable for inflating and sealing optical instruments and has higher application value.)

1. A miniaturized inflator device that employs an externally threaded screw structure, comprising: the device comprises a straight screw cap (1), a spring fixing nut (2), a spring (3), an external thread fixing piece (4), a rubber flat pad (5) and a T-shaped thimble (6);

the screw cap (1) is of an external thread structure, the interior of the threaded cylinder is of a hollow structure, and a straight groove is formed in the end face of the outer side of the screw cap (1) and used for opening a screwdriver; the external thread of the straight screw cap cover (1) is matched and connected with the internal thread of the external thread fixing piece (4);

the external thread fixing piece (4) is of a T-shaped structure, namely, the end face at one end has a larger radial size and is defined as a T-shaped head, the other end has a smaller radial size and is defined as a T-shaped root, the T-shaped root is provided with an external thread, an internal thread is arranged in the cylinder of the external thread in a hollow manner and is butted with the external thread of the I-shaped cap (1); the end surface of the column body of the external thread fixing piece (4) is provided with a vent hole, and the radial size of the vent hole is set to enable a T-shaped thimble (6) to penetrate through;

the root of the T-shaped thimble (6) is sleeved with a rubber flat pad (5), the root of the T-shaped thimble (6) penetrates through a vent hole of the external thread fixing piece (4), and the spring (3) is sleeved on the root of the T-shaped thimble (6) and is screwed and fixed through a spring fixing nut (2);

the T-shaped thimble (6) is set to be completely inserted into the vent hole at the root part, the vent hole is sealed through the end surface of the rubber flat pad (5), however, when the T-shaped thimble (6) is not completely inserted into the vent hole at the root part, a gap is formed between the T-shaped thimble (6) root part and the internal thread of the external thread fixing piece (4) and the vent hole, a gap is also formed between the step part of the starting part of the T-shaped thimble (6) root part and the cylinder end surface of the external thread fixing piece (4), and air flow passes through the gap to perform the ventilation effect of the vent hole.

2. The miniaturized inflator device according to claim 1, wherein the root end of the T-shaped thimble (6) is provided with an external thread, and the external thread is matched and connected with the spring fixing nut (2).

3. The miniaturized inflator according to claim 1, wherein the cap-shaped cap (1) is unscrewed and the internal thread of the screw fastener (4) is screwed in by the inflator nozzle when the device is inflated, and at this time, the T-shaped thimble (6) is pushed out, and the gas enters the inside of the instrument from around the root of the T-shaped thimble (6) along a gap between the root of the T-shaped thimble (6) and the internal thread of the external screw fastener (4), a gap between the root of the T-shaped thimble (6) and the vent hole, and a gap between a step portion of the root start portion of the T-shaped thimble (6) and the cylindrical end surface of the external screw fastener (4).

4. The miniaturized inflator device according to claim 3, wherein after the inflation is finished, when the inflation nozzle is screwed out of the internal thread of the thread fixing member (4), the spring (3) retracts the T-shaped thimble (6), and the rubber flat gasket (5) forms an end face seal with the vent hole of the external thread fixing member (4).

5. The miniaturized inflator device according to claim 1, wherein the in-line nut cap (1) also adopts a T-shaped structure.

6. The miniaturized inflator device of claim 1 wherein the miniaturized inflator device is assembled as a screw structure having external threads for securing to an instrument housing to be sealed by inflation.

7. A miniaturized gas filled device according to claim 6, characterized in that the device is of an externally threaded screw structure, the gas flow being sent from the externally threaded cylindrical end surface of the externally threaded fastener (4), i.e. the end of the whole screw structure; the external thread of the external thread fixing element (4) is used as the external thread of the entire screw structure for fixing on the inflated instrument housing.

8. The miniaturized inflator according to claim 1, wherein the radial dimension of the T-shaped head of the externally threaded fastener (4) matches the radial dimension of the in-line nut cap (1).

9. The miniaturized inflator device according to claim 1, wherein a radial dimension of a root portion of the T-shaped thimble (6) is set smaller than a radial dimension of the vent hole.

10. The miniaturized inflator device according to claim 9, wherein a radial dimension of the vent hole is set to be smaller than a radial dimension of the internal thread of the externally threaded fastener (4).

Technical Field

The invention belongs to the field of mechanical structures, and particularly relates to a miniaturized inflating device which is suitable for instruments requiring the sealing requirement of the inflating device.

Background

When the optical instrument and the equipment are stored for a long time, the optical instrument and the equipment need to be stored in a sealing way, so that moisture is prevented from entering the instrument and contacting the surface of the optical lens for a long time, and the parts are prevented from mildewing; or a device with sealing requirements is required, and nitrogen filling and drying treatment are usually required when the device leaves a factory to ensure long-term storage of products. Therefore, the instruments to be sealed are usually installed and sealed by filling nitrogen gas, and some instruments are limited in volume and weight, so that the air filling device needs to be designed in a small size, thereby reducing the volume and weight of the instruments.

Disclosure of Invention

Technical problem to be solved

The technical problem to be solved by the invention is as follows: how to provide a miniaturized inflator.

(II) technical scheme

In order to solve the above technical problem, the present invention provides a miniaturized inflator that employs an external thread screw structure, including: the device comprises a straight screw cap 1, a spring fixing nut 2, a spring 3, an external thread fixing piece 4, a rubber flat gasket 5 and a T-shaped thimble 6;

the screw cap 1 is of an external thread structure, the interior of the threaded cylinder is of a hollow structure, and a straight groove is formed in the end face of the outer side of the screw cap 1 and used for opening a screwdriver; the external thread of the straight screw cap 1 is matched and connected with the internal thread of the external thread fixing piece 4;

the external thread fixing piece 4 is of a T-shaped structure, namely, the end face at one end has a larger radial size and is defined as a T-shaped head, the other end has a smaller radial size and is defined as a T-shaped root, the T-shaped root is provided with an external thread, an internal thread is arranged in the cylinder of the external thread in a hollow manner and is butted with the external thread of the I-shaped cap cover 1; the end surface of the column body of the external thread fixing piece 4 is provided with a vent hole, and the radial size of the vent hole is set to enable the T-shaped thimble 6 to penetrate through;

the root of the T-shaped thimble 6 is sleeved with a rubber flat pad 5, the root of the T-shaped thimble 6 penetrates through a vent hole of the external thread fixing piece 4, and the spring 3 is sleeved on the root of the T-shaped thimble 6 and is screwed and fixed through a spring fixing nut 2;

the T-shaped thimble 6 is set to be in a state that the root of the T-shaped thimble is not completely inserted into the vent hole, gaps are formed between the root of the T-shaped thimble 6 and the internal thread of the external thread fixing piece 4 and between the root of the T-shaped thimble 6 and the vent hole respectively, gaps are also formed between the step part of the starting part of the root of the T-shaped thimble 6 and the end surface of the column body of the external thread fixing piece 4, and air flow passes through the gaps to perform the ventilation effect of the vent hole.

The tail end of the root part of the T-shaped thimble 6 is provided with an external thread, and the external thread is connected with the spring fixing nut 2 in a matching way.

When the device is inflated, the straight screw cap 1 is unscrewed, the internal thread of the thread fixing piece 4 is screwed in by the inflating nozzle, the T-shaped thimble 6 is ejected, and gas enters the inside of the instrument along the gap between the root of the T-shaped thimble 6 and the internal thread of the external thread fixing piece 4, the gap between the root of the T-shaped thimble 6 and the vent hole, and the gap between the step part of the starting part of the root of the T-shaped thimble 6 and the cylinder end surface of the external thread fixing piece 4 from the periphery of the root of the T-shaped thimble 6.

After the inflation is finished, when the inflation nozzle screws out the internal thread of the thread fixing piece 4, the spring 3 pulls back the T-shaped thimble 6, and the rubber flat gasket 5 forms end face seal for the vent hole of the external thread fixing piece 4.

Wherein, the cap 1 also adopts T word structure.

The miniature inflating device is assembled into a screw structure with external threads and is fixed on an instrument shell needing inflation sealing through the external threads.

The device is provided with a screw structure with an external thread, and air flow is sent out from the end face of a cylinder with the external thread of the external thread fixing piece 4, namely the end part of the whole screw structure; the external thread of the externally threaded fixing element 4 serves as an external thread of the entire screw arrangement for fixing to the inflated instrument housing.

The radial dimension of the T-shaped head of the external thread fixing piece 4 is matched with the radial dimension of the straight-line nut cap 1.

And the radial size of the root of the T-shaped thimble 6 is smaller than that of the vent hole.

Wherein the radial dimension of the vent hole is set smaller than the radial dimension of the internal thread of the external thread fixing piece 4.

(III) advantageous effects

Compared with the prior art, the invention provides the miniaturized inflating device which is fixedly arranged on an instrument needing inflation sealing in an external thread mode, and has the advantages of simple and convenient operation of an inflation process, high sealing performance and ingenious structural design.

The miniaturized inflation device has modularized functions, can meet the use requirement of small-volume instrument inflator equipment, has high sealing performance and convenient operation, and is particularly used for optical instrument equipment with higher sealing requirement; meanwhile, the size of the inflatable bag can be enlarged and reduced in proportion, and the inflatable bag is suitable for other occasions needing inflation.

Drawings

Fig. 1-1 and 1-2 are schematic structural views of a miniaturized inflator.

Fig. 2 is a schematic structural view of a miniaturized inflator.

Wherein: 1: a straight screw cap; 2: a spring fixing nut; 3: a spring; 4: an external thread fixing piece; 5: a rubber flat pad; 6: t type thimble.

Detailed Description

In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

In order to solve the problems of the prior art, the present invention provides a miniaturized inflator, as shown in fig. 1-1 to 2, which employs an external thread screw structure, including: the device comprises a straight screw cap 1, a spring fixing nut 2, a spring 3, an external thread fixing piece 4, a rubber flat gasket 5 and a T-shaped thimble 6;

the screw cap 1 is of an external thread structure, the interior of the threaded cylinder is of a hollow structure, and a straight groove is formed in the end face of the outer side of the screw cap 1 and used for opening a screwdriver; the external thread of the straight screw cap 1 is matched and connected with the internal thread of the external thread fixing piece 4;

the external thread fixing piece 4 is of a T-shaped structure, namely, the end face at one end has a larger radial size and is defined as a T-shaped head, the other end has a smaller radial size and is defined as a T-shaped root, the T-shaped root is provided with an external thread, an internal thread is arranged in the cylinder of the external thread in a hollow manner and is butted with the external thread of the I-shaped cap cover 1; the end surface of the column body of the external thread fixing piece 4 is provided with a vent hole, and the radial size of the vent hole is set to enable the T-shaped thimble 6 to penetrate through;

the root of the T-shaped thimble 6 is sleeved with a rubber flat pad 5, the root of the T-shaped thimble 6 penetrates through a vent hole of the external thread fixing piece 4, and the spring 3 is sleeved on the root of the T-shaped thimble 6 and is screwed and fixed through a spring fixing nut 2;

the T-shaped thimble 6 is set to be in a state that the root of the T-shaped thimble is not completely inserted into the vent hole, gaps are formed between the root of the T-shaped thimble 6 and the internal thread of the external thread fixing piece 4 and between the root of the T-shaped thimble 6 and the vent hole respectively, gaps are also formed between the step part of the starting part of the root of the T-shaped thimble 6 and the end surface of the column body of the external thread fixing piece 4, and air flow passes through the gaps to perform the ventilation effect of the vent hole.

The tail end of the root part of the T-shaped thimble 6 is provided with an external thread, and the external thread is connected with the spring fixing nut 2 in a matching way.

When the device is inflated, the straight screw cap 1 is unscrewed, the internal thread of the thread fixing piece 4 is screwed in by the inflating nozzle, the T-shaped thimble 6 is ejected, and gas enters the inside of the instrument along the gap between the root of the T-shaped thimble 6 and the internal thread of the external thread fixing piece 4, the gap between the root of the T-shaped thimble 6 and the vent hole, and the gap between the step part of the starting part of the root of the T-shaped thimble 6 and the cylinder end surface of the external thread fixing piece 4 from the periphery of the root of the T-shaped thimble 6.

After the inflation is finished, when the inflation nozzle screws out the internal thread of the thread fixing piece 4, the spring 3 pulls back the T-shaped thimble 6, and the rubber flat gasket 5 forms end face seal for the vent hole of the external thread fixing piece 4.

Wherein, the cap 1 also adopts T word structure.

The miniaturized inflation device can be enlarged or reduced in size in proportion and is designed into inflation devices with different sizes.

The miniature inflating device is assembled into a screw structure with external threads and is fixed on an instrument shell needing inflation sealing through the external threads.

The device is provided with a screw structure with an external thread, and air flow is sent out from the end face of a cylinder with the external thread of the external thread fixing piece 4, namely the end part of the whole screw structure; the external thread of the externally threaded fixing element 4 serves as an external thread of the entire screw arrangement for fixing to the inflated instrument housing.

The radial dimension of the T-shaped head of the external thread fixing piece 4 is matched with the radial dimension of the straight-line nut cap 1.

And the radial size of the root of the T-shaped thimble 6 is smaller than that of the vent hole.

Wherein the radial dimension of the vent hole is set smaller than the radial dimension of the internal thread of the external thread fixing piece 4.