CN211452653U

CN211452653U - Waterproof structure of human body infrared forehead thermometer

Info

Publication number: CN211452653U
Application number: CN201921800369.5U
Authority: CN
Inventors: 齐明杰
Original assignee: Suzhou Kuangdi Medical Technology Co ltd
Current assignee: Suzhou Kuangdi Medical Technology Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-09-08
Anticipated expiration: 2029-10-24

Abstract

The utility model relates to a waterproof construction of human infrared forehead thermometer, waterproof construction includes forehead temperature head body, epitheca, inferior valve, battery cover, sets up the panel on the epitheca and sets up the button part on the panel and set up the slide switch key part to the epitheca side. The forehead temperature head is characterized in that the upper shell and the lower shell are assembled through a clamping hook, and the forehead temperature head body is arranged at the front ends of the upper shell and the lower shell. The technical scheme effectively realizes the drip-proof function of the product on the whole, thereby not only protecting electronic parts in the product and improving the functional safety of the product, but also improving the convenience for users to use, increasing the functional selling points of the product and being beneficial to the market popularization and sale of the product; the waterproof structure between the key and the upper shell of the structure not only effectively realizes waterproofness, but also can effectively eliminate the hidden trouble of the clamping key, and improves the reliability of the product key. The waterproof structure between the sliding switch key on the side of the upper shell and the upper shell also greatly improves the hand feeling of the switch when the switch slides.

Description

Waterproof structure of human body infrared forehead thermometer

Technical Field

The invention relates to a waterproof structure, in particular to a waterproof structure of a human body infrared forehead thermometer, and belongs to the technical field of medical instrument structures.

Background

For the portable infrared thermometer, although the european standard has proposed the product to meet the requirement of drip prevention, the implementation of the term will greatly increase the complexity of the product structure, increase the mold cost, material cost and production, assembly and detection cost of the product, and especially for many manufacturers, the existing products are all non-waterproof structures. Since the non-waterproof structure is changed into a waterproof structure, the structure is basically equal to the abandonment of the original product design and the mould, and the sample sending authentication is needed again, which causes great loss to various manufacturers, and in addition, the waterproof structure is not the focus of attention from the requirements of consumers in the past. Therefore, the past requirements for water resistance are only limited to the publicity level, and the requirements are not really fulfilled. However, with the further improvement of the requirement of the consumer on the safety function of the product, the medical regulations in various regions of the world are gradually tightened, and in the near future, no matter in europe, the united states or in China, the anti-dripping function is bound to become one of the important terms strictly required to be executed, so that it is very critical to adopt a reasonable waterproof structure as soon as possible.

Disclosure of Invention

The technical scheme effectively realizes the anti-dripping function of the product, meets the requirements of regulations, protects electronic parts in the product, improves the functional safety of the product, improves the convenience of use for users, increases the functional selling points of the product and is beneficial to market popularization and sale of the product.

In order to achieve the purpose, the technical scheme of the invention is that the waterproof structure of the human body infrared forehead thermometer is characterized by comprising a forehead temperature head body, forehead temperature head soft colloid, an upper shell, a lower shell, a panel arranged on the upper shell, key parts arranged on the panel and the upper shell and a sliding switch key part arranged on the side surface of the upper shell, wherein the forehead temperature soft colloid is secondarily injected at the front end and the rear end of the forehead temperature head body, and the rear end of the forehead temperature soft colloid is matched with a flange structure at the front end of the lower shell 6 and is locked and fixed by a head screw. The upper shell and the lower shell are assembled through the clamping hook, and the front ends and the inner parts of the upper shell and the lower shell are in close contact with the rear end face and the inner side face of the forehead temperature head soft colloid.

As an improvement of the invention, the panel is tightly attached to the upper shell through the waterproof double-sided adhesive tape, so that the waterproof effect between the panel and the upper shell is realized.

As an improvement of the present invention, the key component includes a plastic key, a tact switch, a spring, an O-ring and a circuit board, the circuit board is fixed on the lower casing by a circuit board screw, three tact switches are assembled on the circuit board, three corresponding plastic keys are assembled on the upper casing, each plastic key is provided with an O-ring, a spring is respectively arranged around each tact switch 12, the upper part of the spring is against the plastic key, and the lower part of the spring is against the circuit board.

As an improvement of the invention, the side surface of the plastic key is provided with an arc-shaped groove near the root part thereof for assembling and positioning the O-shaped sealing ring, and the side surface of the key hole on the upper shell is designed into a step shape which is convex upwards and concave downwards, so that a step-shaped gap which is small at the top and big at the bottom is formed between the side surface of the key and the side surface of the plastic key. In a completely assembled state, the O-shaped sealing ring is extruded by the side face of the key hole, so that the O-shaped sealing ring is deformed and just filled into a larger gap formed between the side face of the key and the side face of the key hole on the upper shell, and a waterproof effect is achieved (the wire diameter of the O-shaped sealing ring 1 is 1.0-1.5 mm, the compression amount is 10% -15%, and the effect is optimal). The side surface of the key hole is a smooth surface, so that friction between the O-shaped sealing ring and the side surface of the key hole is reduced when the key moves up and down. The step structure on the side surface of the key hole can ensure that the movement of the sealing ring is limited to a large gap position at the lower part and can not be extruded into a small gap at the upper part of the step under any condition, thereby effectively avoiding the problem of key clamping.

As an improvement of the invention, the bottom of the plastic key is provided with a bone position which is convenient to mount and stabilize by a spring, and the bottom of the spring is arranged on the circuit board and is used for providing upward supporting force required by the reset of the key after being pressed; a gap of about 0.2mm is reserved between the top pressing column of the tact switch and the key bone position of the key so as to meet the tolerance requirement of the whole key structure assembly.

As an improvement of the invention, the infrared forehead thermometer head adopts a structure that soft colloid is injected on the forehead thermometer head body twice, the soft colloid covers the front end surface and the rear end surface of the head, when the whole head is locked on the lower shell by a head screw, the soft colloid at the rear end of the head is tightly contacted with the corresponding assembly end surface on the lower shell, when the upper shell is assembled with the lower shell through the clamping hook, the front end of the upper shell is tightly matched with the soft colloid end surface of the head, and the water prevention between the head and the upper shell and the lower shell can be realized through the soft colloid structure.

As an improvement of the forehead temperature head, the inside of the forehead temperature head body is also provided with the small lens and the light emitting diode, and the small lens is wrapped on the forehead temperature head body through the soft colloid positioned at the front end of the head during secondary injection, so that the water resistance of the light emitting diode is realized.

As an improvement of the invention, the rear end of the sensor assembly is provided with a head pressing plate, and the whole sensor assembly is tightly pressed on the soft colloid at the front end of the head, so that the head of the sensor assembly is waterproof.

As an improvement of the invention, the structure of the seam allowance positions (the matching surface positions of the upper shell and the lower shell) of the upper shell and the lower shell is that the seam allowance position bone position of the upper shell extends downwards, and most of water flow flowing through the seam allowance positions can be guided to the outer side surface of the lower shell to leave the machine body. The art designing seam between the seam allowance positions of the upper shell and the lower shell is 0.3mm, the water quantity which can enter the art designing seam is very little, the bone position of the edge in the seam allowance position of the lower shell extends upwards, the height is 3.0mm, and the structure can completely prevent the water entering the art designing seam from entering the machine body.

As an improvement of the invention, the clearance between the lower shell and the battery cover is less than or equal to 0.1mm, under the condition of dripping, the water quantity entering the clearance is very little, the bone position on the outer side edge of the seam allowance position of the lower shell extends downwards and plays a role in guiding most of water flowing through the seam allowance position, the bone position on the inner side edge of the seam allowance position of the battery cover extends upwards, the height is 2.5mm, the water entering the clearance between the lower shell and the battery cover can be completely prevented from entering the interior of a machine body, and a soft rubber waterproof pad is arranged between the bottom of a sliding switch key positioned on the side surface of the upper shell of a product and the inner side wall of the upper shell.

As an improvement of the invention, a soft rubber waterproof pad is arranged between the bottom of the sliding switch key positioned on the side surface of the upper shell of the product and the inner side of the upper shell, so that the stable and soft hand feeling of the key during sliding can be ensured, and a waterproof effect can be achieved.

Compared with the prior art, the invention has the following advantages: 1) the technical scheme effectively realizes the drip-proof function of the product on the whole, meets the requirements of future laws and regulations, protects electronic parts in the product, improves the functional safety of the product, improves the convenience for users to use, increases the functional selling points of the product and is beneficial to the market popularization and sale of the product; 2) the waterproof structure between the key and the upper shell not only effectively realizes waterproofing, but also effectively eliminates the hidden trouble of key clamping, and improves the reliability of the product key; 3) the head adopts the soft colloid of secondary injection molding, has both realized the head is waterproof, has also increased the space that the outward appearance of product changed, has strengthened the aesthetic property of product.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

fig. 4-7 are enlarged views of portions of the present invention.

In the figure: 1. the forehead temperature head comprises a plastic key, 2 a panel, 3 an upper shell, 4 forehead temperature head soft colloid, 5 forehead temperature head bodies, 6 a lower shell, 7 a battery cover, 8 a sliding switch key, 9 a waterproof double-sided adhesive tape, 10 a spring, 11 an O-shaped sealing ring, 12 a tact switch, 13 a circuit board, 14 a soft rubber pad, 15 a light emitting diode, 16 a lens, 17 an infrared sensor assembly, 18 battery cover screws, 19 circuit board screws, 20 head screws and 21 head pressing plates.

The specific implementation mode is as follows:

for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.

Example 1: referring to fig. 1 to 7, the waterproof structure of the human body infrared forehead thermometer comprises a forehead temperature head body 5, a forehead temperature head soft colloid 4, an upper shell 3, a lower shell 6, a panel 2 arranged on the upper shell 3, a key part arranged on the panel 2 and the upper shell 3, and a sliding switch key part arranged on the side surface of the upper shell, wherein the forehead temperature soft colloid 4 is secondarily injection-molded at the front and rear ends of the forehead temperature head body 5, and the rear end of the forehead temperature soft colloid is matched with a flange structure at the front end of the lower shell 6 and is locked and fixed by a head screw 20. The upper shell 3 and the lower shell 6 are assembled through a clamping hook, the front ends and the inner parts of the upper shell 3 and the lower shell are in close contact with the rear end surface and the inner side surface of the forehead temperature head soft colloid 4, the panel 2 is tightly attached to the upper shell 3 through a waterproof double-sided adhesive tape 9, so that the waterproof between the panel and the upper shell is realized, the key parts comprise plastic keys 1, light touch switches 12, springs 10, O-shaped sealing rings 11 and a circuit board 13, the circuit board 13 is fixed on the lower shell 6 through circuit board screws 19, the three light touch switches 12 are assembled on the circuit board 13, the three corresponding plastic keys 1 are assembled on the upper shell 3, each plastic key 1 is provided with one O-shaped sealing ring 10, each spring 10 is arranged around each light touch switch 12, the upper part of each spring 10 props against the plastic key 1, the lower part props against the circuit board 13, and a circular arc-shaped groove is arranged at the position of the side, the O-shaped sealing ring is used for assembling and positioning the O-shaped sealing ring 11, and the side surface of the key hole on the upper shell 3 is designed into a step shape which is convex upwards and concave downwards, so that a step-shaped gap which is small in top and large in bottom is formed between the key hole and the outer side surface of the key 1. In a completely assembled state, the side surface of the key hole extrudes the O-shaped sealing ring 11 to enable the O-shaped sealing ring to deform and just fill a larger gap formed between the side surface of the key and the side surface of the key hole on the upper shell 3, so that a waterproof effect is achieved (the wire diameter of the O-shaped sealing ring 11 is 1.0-1.5 mm, the compression amount is 10% -15%, and the effect is optimal). The side surface of the key hole is a smooth surface, so that the friction between the O-shaped sealing ring 11 and the side surface of the key hole is reduced when the key 11 moves up and down. The step structure on the side surface of the key hole can ensure that the movement of the sealing ring 11 is limited to a large gap position at the lower part and cannot be extruded into a small gap at the upper part of the step under any condition, so that the problem of key clamping can be effectively avoided; a gap of about 0.2mm is left between a pressing column at the top of the light touch switch 12 and a key bone position of the key 1 so as to meet the tolerance requirement of key overall structure assembly, the infrared forehead thermometer head adopts a structure of secondary injection molding of soft colloid 4 on the forehead thermometer body 5, the soft colloid 4 covers the front and rear end faces of the head, when the head screw 20 locks the whole head on the lower shell 6, the soft colloid at the rear end of the head is in close contact with the corresponding assembly end face on the lower shell, when the upper shell 3 is assembled with the lower shell 6 through the clamping hook, the front end of the upper shell is also in close fit with the soft colloid end face of the head, the waterproof between the head and the upper shell 3 and the lower shell 6 can be realized through the soft colloid structure, a small lens 16 and a light emitting diode 15 are further arranged inside the forehead thermometer body 5, the small lens 16 is wrapped on the forehead thermometer body 5 through the soft colloid 4 at the front end of the head during secondary injection molding, the waterproof structure of the light-emitting diode 15 is realized, the head pressing plate 21 is arranged at the rear end of the sensor assembly 17, the whole sensor assembly 17 is tightly pressed on the soft rubber body 4 at the front end of the head, the head of the sensor assembly is waterproof, the structure of the seam allowance positions (the matching surface positions of the upper shell and the lower shell) of the upper shell 3 and the lower shell 6 is that the seam allowance position bone position of the upper shell 3 extends downwards, and most of water flowing through the seam allowance positions can be guided to the outer side surface of the lower shell 6 to leave the machine body. The seam between the seam positions of the upper shell and the lower shell is 0.3mm, the water entering the seam is very little, the bone position of the inner side edge of the seam position of the lower shell 6 extends upwards, the height of the seam is 3.0mm, the seam can completely prevent the water entering the seam from entering the machine body, the clearance between the lower shell and the battery cover is less than or equal to 0.1mm, the water entering the clearance is very little under the condition of dripping, the bone position of the outer side edge of the seam position of the lower shell 6 extends downwards, the diversion effect is realized on most of water flowing through the seam, the bone position of the inner side edge of the seam position of the battery cover extends upwards, the height of the seam is 2.5mm, the water entering the clearance between the lower shell and the battery cover can be completely prevented from entering the machine body, and the seam positioned on a product

Soft glue waterproof pad 14 is equipped with between the inside wall of the bottom of the slide switch key 8 of 3 sides of shell and epitheca 3, be located product 3 side slide switch key 8's of side bottom and epitheca 3 inboard between be equipped with soft glue waterproof pad 14, steady soft feeling when both can guaranteeing the button slip also can play waterproof effect.

The working principle is as follows: referring to fig. 1-7, a waterproof structure of a human body infrared forehead thermometer, in the scheme, waterproof double faced adhesive tape is adopted to realize the waterproof between a panel and an upper shell; waterproof ring structure is adopted to realize the waterproof between the key and the upper shell; the head part is made of a soft rubber body material which is subjected to secondary injection molding, so that the head part is waterproof with the upper shell, the lower shell and the light-emitting diode and the sensor assembly; small art-designing seams and water retaining bone positions are adopted between the upper shell and the lower shell and between the battery cover and the lower shell, so that the drip prevention is realized; adopt the flexible glue pad to realize waterproofly between the slide switch of product epitheca side and the inferior valve, through the cooperation of above-mentioned multiple structure, comprehensive drip proof function has been realized to this scheme.

It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.

Claims

1. The utility model provides a waterproof construction of human infrared forehead thermometer, its characterized in that, waterproof construction includes forehead temperature head body, forehead temperature head soft colloid, epitheca, inferior valve, sets up panel on the epitheca, sets up button part and the slide switch key part that sets up on the epitheca side on panel and epitheca, forehead temperature soft colloid secondary is moulded plastics in both ends around the forehead temperature head body, and its rear end cooperatees with the flange structure of inferior valve front end to lock fixedly with the head screw, assemble through the pothook between epitheca and the inferior valve, and front end between them and inside all with the rear end face and the medial surface in close contact with of forehead temperature head soft colloid.

2. The waterproof structure of human infrared forehead thermometer according to claim 1, wherein said panel is adhered to the upper shell by a waterproof double-sided tape.

3. The waterproof structure of human body infrared forehead thermometer according to claim 2, wherein the key components include plastic keys, tact switches, springs, O-rings and a circuit board, the circuit board is fixed on the lower casing by circuit board screws, three tact switches are mounted on the circuit board, the corresponding three plastic keys are mounted on the upper casing, each plastic key is mounted with an O-ring, a spring is mounted around each tact switch, the upper part of the spring is against the plastic keys, and the lower part of the spring is against the circuit board.

4. The waterproof structure of a human body infrared forehead thermometer according to claim 3, wherein the plastic key has a circular arc-shaped groove near the root thereof for assembling and positioning the O-ring, and the side of the key hole on the upper case is designed to have a step shape with an upper convex and a lower concave, so that a step-shaped gap with a smaller upper part and a larger lower part is formed between the side of the key hole and the outer side of the key.

5. The waterproof structure of human body infrared forehead thermometer according to claim 4, wherein the bottom of the plastic button is provided with a bone position which is convenient for spring installation and stabilization, and the bottom of the spring is arranged on the circuit board and used for providing upward supporting force for the button to reset after being pressed; a gap of about 0.2mm is reserved between the top pressing column of the tact switch and the key bone position of the key so as to meet the tolerance requirement of the whole key structure assembly.

6. The waterproof structure of an infrared forehead thermometer for a human body as claimed in claim 5, wherein the head of the infrared forehead thermometer is formed by injection molding forehead temperature soft rubber on a forehead temperature head body twice, the forehead temperature soft rubber covers the front and rear end faces of the head, when the whole head is locked on the lower shell by a head screw, the soft rubber at the rear end of the head is in close contact with the corresponding assembly end face on the lower shell, when the upper shell is assembled with the lower shell through the hook, the front end of the upper shell is in close fit with the soft rubber end face of the head, and the waterproof structure between the head and the upper shell and the lower shell can be realized through the soft rubber structure.

7. The waterproof structure of the human body infrared forehead thermometer according to claim 6, wherein the forehead temperature head body is further internally provided with small lenses and a light emitting diode, and the small lenses are wrapped on the forehead temperature head body through the soft colloid at the front end of the head during secondary injection molding, so that the waterproof of the light emitting diode is realized.

8. The waterproof structure of human infrared forehead thermometer according to claim 7, wherein the rear end of the sensor assembly is provided with a head pressing plate, the whole sensor assembly is tightly pressed on the soft gel at the front end of the head, thereby achieving the waterproof of the head of the sensor assembly.

9. The waterproof structure of human infrared forehead thermometer according to claim 8, wherein the structure of the seam allowance of the upper and lower cases, i.e. the seam allowance of the upper case extending downward to guide most of the water flow passing through the seam allowance to the outer side of the lower case to leave the machine body, the seam allowance between the seam allowance of the upper and lower cases is 0.3mm, the amount of water entering the seam allowance is very small, and the seam allowance of the inner side edge of the seam allowance of the lower case extending upward to a height of 3.0mm, which completely blocks the water entering the seam allowance from entering the machine body.

10. The waterproof structure of the human infrared forehead thermometer according to claim 9, wherein the gap between the lower case and the battery cover is less than or equal to 0.1mm, the amount of water entering the gap is very small under the condition of water dropping, the outer side edge bone position of the seam allowance of the lower case extends downwards to guide most of the water flowing through the gap, the bone position of the inner side edge of the seam allowance of the battery cover extends upwards to reach a height of 2.5mm to completely prevent the water entering the gap between the lower case and the battery cover from entering the inside of the body, and a soft rubber waterproof pad is arranged between the bottom of the sliding switch key on the side surface of the upper case of the product and the inner side wall of the upper case.