CN209895954U

CN209895954U - Waterproof button structure

Info

Publication number: CN209895954U
Application number: CN201920742662.4U
Authority: CN
Inventors: 阳仕兴; 严文华
Original assignee: Cosonic Intelligent Technologies Co Ltd
Current assignee: Cosonic Intelligent Technologies Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-01-03
Anticipated expiration: 2029-05-22

Abstract

The utility model discloses a waterproof button structure. The waterproof key structure comprises a key and a shell; the key comprises a pressing part and a shaft part which are connected; the shell is provided with a first through hole matched with the key, the inner wall of the first through hole is provided with a first limiting step, and one end of the shaft part, far away from the position of the pressing part, penetrates out of the shell; a rigid gasket is fixedly arranged on the inner wall of the first through hole; a spring is sleeved outside the shaft part, the top of the spring is abutted with the pressing part, and the bottom of the spring is abutted with the rigid gasket; the shaft part is provided with a first groove, a sealing ring is arranged in the first groove, and the sealing ring is positioned between the rigid gasket and the first limiting step. The utility model discloses a set up first recess on the axial region to set up the sealing washer in first recess, the sealing washer can plug up the clearance between axial region and the first through-hole from this, thereby guarantees that liquid can't get into inside the electronic product through the clearance between axial region and the first through-hole, in order to play waterproof effect.

Description

Waterproof button structure

Technical Field

The utility model relates to an electronic product technical field, in particular to button structure drains.

Background

The existing electronic products often have higher waterproof requirements, for example, the waterproof grade needs to reach IPX6 or IPX7, and because the key is a moving part, the key and the shell need a gap to move, and the gap has a restriction effect on the waterproof of the key part. In order to solve the problem in the prior art, a double-color mold scheme is adopted by utilizing the principle that a soft rubber has elasticity and sealing performance, and a key is connected with a shell by the soft rubber in the double-color mold, so that the aim of water resistance is fulfilled. However, the dual color scheme is costly and sometimes cannot be used due to structural limitations.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a waterproof button structure can solve one or more among the above-mentioned prior art problem.

According to one aspect of the utility model, a waterproof button structure is provided, which comprises a button and a shell;

the key comprises a pressing part and a shaft part which are connected, the pressing part is connected with the top of the shaft part, and the whole key is in a T shape;

the shell is provided with a first through hole matched with the key, the inner wall of the first through hole is provided with a first limiting step protruding inwards along the circumferential direction of the inner wall of the first through hole, the first limiting step is positioned at the bottom end of the first through hole, and one end of the shaft part, which is far away from the position of the pressing part, penetrates out of the shell;

a rigid gasket is fixedly arranged on the inner wall of the first through hole, the rigid gasket is positioned above the first limiting step, and a second through hole through which the shaft part can pass is formed in the rigid gasket;

a spring is sleeved outside the shaft part, the top of the spring is abutted with the pressing part, and the bottom of the spring is abutted with the rigid gasket;

the shaft part is provided with a first groove arranged along the circumferential direction of the shaft part, a sealing ring is arranged in the first groove, and the sealing ring is positioned between the rigid gasket and the first limiting step.

The beneficial effects of the utility model reside in that: the utility model discloses a set up first recess on the axial region to set up the sealing washer in first recess, the sealing washer can plug up the clearance between axial region and the first through-hole from this, thereby guarantees that liquid can't get into inside the electronic product through the clearance between axial region and the first through-hole, in order to play waterproof effect.

In some embodiments, the pressing portion is provided with a stopper protruding downward along a circumferential direction thereof, and an installation groove can be formed between the stopper and the shaft portion, and the spring is installed in the installation groove. From this, the installation of spring can be convenient for more in this kind of setting, and the mounting groove can play limiting displacement to the spring for when pressing the button, at the in-process of spring compression, the compression direction of spring keeps vertical, thereby guarantees that the button can be pushed down smoothly. When the key is released and pressed, the restoring direction of the spring can be kept vertical in the process that the spring is restored to the initial state, so that the key can be smoothly and stably restored to the initial position.

In some embodiments, the inner wall of the first through hole is further provided with a second limiting step protruding inwards along the circumferential direction of the inner wall, and the second limiting step is located below the limiting part and above the first limiting step. From this, through set up the spacing step of second on the inner wall of first through-hole, can play the limiting displacement to the axial motion of button, when pressing the splenium downwards, the whole downstream of button, when the bottom of locating part and the spacing step looks butt of second, the button can't further downstream this moment to effectively prevent the button excessive distance of downstream.

In some embodiments, one end of the shaft part penetrating through the shell is provided with a second groove arranged along the circumferential direction of the shaft part, a clamp spring is installed in the second groove, and the outer diameter of the clamp spring is larger than the inner diameter of the bottom end of the first through hole. One end through stretching out the casing at the axial region sets up the second recess, and install the jump ring in the second recess, because the external diameter of jump ring is greater than the internal diameter of the bottom of first through-hole, from this when the hand leaves when pressing the key, under the effect of resilience force of spring, the spring resumes to initial position gradually, and then drive the whole upward movement together thereupon of button, when the bottom butt of jump ring and casing, the button will not continue upward movement again this moment, thereby can further restrict the axial motion of button, prevent that the button from breaking away from the casing at the in-process of upward movement.

In some embodiments, the clamp spring is made of high-carbon steel, stainless steel or spring steel, and the thickness of the clamp spring is 0.3-1.0 mm. Therefore, the arrangement can ensure the mechanical property of the clamp spring, so that the clamp spring has enough strength and hardness to better play a role in limiting the axial movement of the key.

In some embodiments, the sealing ring is an O-ring, and the sealing ring is made of silicone rubber. Because the silicon rubber has good heat resistance, cold resistance and dielectricity, the sealing ring is made of the silicon rubber, so that the service life of the sealing ring can be greatly prolonged. In addition, because O type sealing washer has simple structure, installation compactness, sealing performance better and have advantages such as self sealss effect, adopt O type sealing washer from this as the utility model provides a sealing washer can further guarantee the utility model discloses a water-proof effects.

In some embodiments, the O-ring has a wire diameter of 0.5 to 1.0 mm. Therefore, the size can further ensure the sealing effect of the sealing ring.

In some embodiments, the rigid gasket is made of metal, and the thickness of the rigid gasket is 0.3-1.0 mm. Therefore, the rigid gasket is made of metal, so that the mechanical strength of the rigid gasket can be improved, and the rigid gasket can better support the spring.

In some embodiments, the rigid shim is made of high carbon steel, stainless steel, or spring steel. Thus, by using high carbon steel. The rigid gasket made of stainless steel or spring steel can further improve the mechanical strength of the rigid gasket and further improve the supporting effect of the rigid gasket on the spring.

In some embodiments, the spring is made of high carbon steel, stainless steel or spring steel, and the wire diameter of the spring is 0.3-1.0 mm. Therefore, the arrangement can ensure the resilience force of the spring, so that when a hand leaves the pressing part, the key can smoothly return to the initial position under the action of the resilience force of the spring.

Drawings

Fig. 1 is a schematic overall structure diagram of a waterproof button structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a key in the waterproof key structure shown in fig. 1.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

Fig. 1 and 2 schematically show a waterproof key structure according to an embodiment of the present invention. As shown in fig. 1, the waterproof key structure includes a key 100 and a case 200. The housing 200 may be fixedly connected to a housing of a terminal such as an electronic device, and the housing 200 may be integrally formed with the terminal housing, or may be separately formed and then fixedly connected to a designated position of the terminal housing by a connection method such as glue or ultrasonic welding.

As shown in fig. 1 and 2, the key 100 includes a pressing portion 110 and a shaft portion 120 connected to each other, the pressing portion 110 is connected to a top portion of the shaft portion 120, the key 100 is T-shaped as a whole, the pressing portion 110 corresponds to a horizontal portion of the T, and the shaft portion 120 corresponds to a vertical portion of the T. The keys 100 may be of a gum material or a metal material.

The housing 200 is provided with a first through hole 210 matching with the key 100, the inner wall of the first through hole 210 is provided with a first limiting step 220 protruding inwards along the circumferential direction, the first limiting step 220 is located at the bottom of the first through hole 210, and one end of the shaft part 120 away from the position of the pressing part 110 penetrates out of the housing 200. The key 100 is in clearance fit with the first through hole 210, and the key 100 can axially move in the first through hole 210, so that when the pressing part 110 of the key 100 is pressed downwards, the whole key 100 moves towards the position of the part to be pressed on the terminal and finally abuts against the part to be pressed.

A rigid gasket 230 is fixedly arranged on the inner wall of the first through hole 210, the rigid gasket 230 is positioned above the first limit step 220, a second through hole through which the shaft part 120 can pass is arranged on the rigid gasket 230, and the second through hole is in clearance fit with the shaft part 120 of the key 100, so that the shaft part 120 of the key 100 can move axially in the second through hole.

The spring 300 is fitted around the shaft 120, the top of the spring 300 abuts against the pressing portion 110, and the bottom of the spring 300 abuts against the rigid gasket 230. Therefore, the rigid gasket 230 can support the spring 300, when the pressing portion 110 is pressed downward, the spring 300 is compressed, and when the hand leaves the pressing portion 110, the spring 300 gradually returns to the initial state under the resilient force to drive the key 100 to return to the initial position.

The spring 300 may be made of high carbon steel, stainless steel or spring steel, and the wire diameter of the spring 300 may be 0.3-1.0 mm. Therefore, the resilient force of the spring 300 can be ensured, so that the key 100 can smoothly return to the initial position under the resilient force of the spring 300 when a hand leaves the pressing part 110.

In order to further facilitate the installation of the spring 300, the pressing portion 110 may be provided with a limiting member 130 protruding downward along a circumferential direction thereof, an installation groove 500 may be formed between the limiting member 130 and the shaft portion 120, and the spring 300 is installed in the installation groove 500. Therefore, the mounting groove 500 can limit the spring 300, so that when the key 100 is pressed, the compression direction of the spring 300 is kept vertical in the compression process of the spring 300, and the key 100 can be smoothly pressed. When the key is released, the restoring direction of the spring 300 can be kept vertical in the process of restoring the spring 300 to the initial state, thereby ensuring that the key 100 can be smoothly and stably restored to the initial position.

In order to further ensure that the key 100 can move up and down within a certain specification of stroke, the inner wall of the first through hole 210 is further provided with a second limiting step 240 protruding inwards along the circumferential direction thereof, the second limiting step 240 is located below the limiting member 130 and above the first limiting step 220, when the key 100 is not in a pressed state, a certain distance exists between the limiting member 130 and the second limiting step 240, and the distance is the specification of stroke of the key 100 capable of moving down. Therefore, the second limiting step 240 is arranged on the inner wall of the first through hole 210, so that the axial movement of the key 100 can be limited, when the pressing part 110 is pressed downwards, the whole key 100 moves downwards, when the bottom of the limiting part 130 is abutted against the second limiting step 240, the key 100 cannot move downwards further, and the key 100 is effectively prevented from moving downwards for too much distance to crush the part to be pressed on the terminal.

The rigid gasket 230 may be made of metal, and the thickness of the rigid gasket 230 is 0.3-1.0 mm. Thus, by forming the rigid spacer 230 of metal, the mechanical strength of the rigid spacer 230 can be increased, thereby better supporting the spring 300.

Preferably, the material of the rigid gasket 230 may be high carbon steel, stainless steel or spring steel. Thus, by using high carbon steel. The rigid spacer 230 made of stainless steel or spring steel can further improve the mechanical strength of the rigid spacer 230 and further improve the supporting effect of the rigid spacer 230 on the spring 300.

The shaft part 120 is provided with a first groove 121 arranged along the circumferential direction of the shaft part, a sealing ring 400 is arranged in the first groove 121, the sealing ring 400 is positioned between the rigid gasket 230 and the first limiting step 220, and the sealing ring 400 is in gapless fit with the first through hole 210 to ensure the sealing effect of the sealing ring 400. Therefore, by arranging the first groove 121 on the shaft part 120 and the sealing ring 400 in the first groove 121, the sealing ring 400 can block the gap between the shaft part 120 and the first through hole 210, so that the liquid can not enter the inside of the terminal such as an electronic product through the gap between the shaft part 120 and the first through hole 210, and the waterproof effect is achieved.

The sealing ring 400 may be an O-ring 400, and the sealing ring 400 is made of silicon rubber. Since the silicon rubber has good heat resistance, cold resistance and dielectricity, the sealing ring 400 is made of the silicon rubber, so that the service life of the sealing ring 400 can be greatly prolonged. In addition, because O type sealing washer 400 has advantages such as simple structure, installation compactness, sealing performance are better and have self sealss effect, adopt O type sealing washer 400 from this as the utility model provides a sealing washer 400 can further guarantee the utility model discloses a water-proof effects.

The O-ring 400 may have a wire diameter of 0.5-1.0 mm. Thus, such a size can further ensure the sealing effect of the sealing ring 400.

In order to further improve the utility model provides a stability of waterproof button structure, the one end that casing 200 was worn out to axial region 120 can be equipped with along the second recess 122 of its circumference setting, installs jump ring 600 in the second recess 122, and jump ring 600's external diameter is greater than the internal diameter of the bottom of first through-hole 210. Through stretching out the one end of casing 200 at axial region 120 and setting up second recess 122, and install jump ring 600 in second recess 122, because the external diameter of jump ring 600 is greater than the internal diameter of the bottom of first through-hole 210, from this when the hand leaves the key of pressing, under the effect of the resilience force of spring 300, spring 300 resumes to initial position gradually, and then drive button 100 wholly upwards along with it, when jump ring 600 and the bottom butt of casing 200, button 100 will not continue upward movement again this moment, thereby can further restrict button 100's axial motion, prevent that button 100 from breaking away from casing 200 at the in-process of upward movement.

The clamp spring 600 can be made of high carbon steel, stainless steel or spring steel, and the thickness of the clamp spring 600 is 0.3-1.0 mm. Therefore, the arrangement can ensure the mechanical property of the clamp spring 600, so that the clamp spring has enough strength and hardness to better limit the axial movement of the key 100.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A waterproof key structure, characterized by comprising a key (100) and a housing (200);

the key (100) comprises a pressing part (110) and a shaft part (120) which are connected, the pressing part (110) is connected with the top of the shaft part (120), and the key (100) is integrally T-shaped;

a first through hole (210) matched with the key (100) is formed in the shell (200), a first limiting step (220) protruding inwards is arranged on the inner wall of the first through hole (210) along the circumferential direction of the first through hole, the first limiting step (220) is located at the bottom end of the first through hole (210), and one end, away from the pressing portion (110), of the shaft portion (120) penetrates out of the shell (200);

a rigid gasket (230) is fixedly arranged on the inner wall of the first through hole (210), the rigid gasket (230) is positioned above the first limiting step (220), and a second through hole through which the shaft part (120) can pass is formed in the rigid gasket (230);

a spring (300) is sleeved outside the shaft part (120), the top of the spring (300) is abutted against the pressing part (110), and the bottom of the spring (300) is abutted against the rigid gasket (230);

the shaft part (120) is provided with a first groove (121) arranged along the circumferential direction of the shaft part, a sealing ring (400) is arranged in the first groove (121), and the sealing ring (400) is positioned between the rigid gasket (230) and the first limiting step (220).

2. The waterproof key structure according to claim 1, wherein the pressing portion (110) is provided with a stopper (130) protruding downward along a circumferential direction thereof, an installation groove (500) can be formed between the stopper (130) and the shaft portion (120), and the spring (300) is installed in the installation groove (500).

3. The waterproof key structure of claim 2, wherein the inner wall of the first through hole (210) is further provided with a second limiting step (240) protruding inwards along the circumferential direction thereof, and the second limiting step (240) is located below the limiting member (130) and above the first limiting step (220).

4. The waterproof key structure according to claim 1, wherein a second groove (122) is formed in one end, penetrating out of the housing (200), of the shaft portion (120), a clamp spring (600) is installed in the second groove (122), and the outer diameter of the clamp spring (600) is larger than the inner diameter of the bottom end of the first through hole (210).

5. The waterproof key structure of claim 4, wherein the clamp spring (600) is made of high-carbon steel, stainless steel or spring steel, and the thickness of the clamp spring (600) is 0.3-1.0 mm.

6. The waterproof key structure according to claim 1, wherein the sealing ring (400) is an O-ring (400), and the sealing ring (400) is made of silicone rubber.

7. The waterproof key structure of claim 6, wherein the O-ring (400) has a wire diameter of 0.5-1.0 mm.

8. The waterproof key structure according to claim 1, wherein the rigid gasket (230) is made of metal, and the thickness of the rigid gasket (230) is 0.3-1.0 mm.

9. The waterproof key structure of claim 8, wherein the rigid gasket (230) is made of high carbon steel, stainless steel or spring steel.

10. The waterproof key structure according to any one of claims 1 to 9, wherein the spring (300) is made of high carbon steel, stainless steel or spring steel, and the wire diameter of the spring (300) is 0.3-1.0 mm.