Waterproof touch key
The touch button PCB board is sealed through the combined structure of the snap ring and the induction spring, which solves the problem of water inlet caused by gaps in the traditional sealing structure, and achieves better waterproofing and extended service life.
Patent Information
- Application Number
- CN202420072862.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-11
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-01-11
AI Technical Summary
When existing touch buttons accidentally enter water, internal components are prone to corrosion and short circuits, affecting the service life. There are gaps in traditional sealing structures that cause glue to flow into the PCB board, affecting the use effect.
The touch button PCB board is fixed in the box body with a snap ring and an induction spring, forming a sealing structure. The gap between the snap ring and the PCB board is pressed and fitted by the induction spring, and the first accommodating cavity is completely closed to prevent glue from entering; under the board box The cover and key board box are fixed by welding ribs, and the opening is filled with sealing glue to fill it to the height of the surrounding wall to reduce the exposed area and reduce the risk of water vapor passing through.
The waterproofing effect is improved, preventing glue from flowing into the front of the PCB board, extending service life, reducing production costs, enhancing waterproofing performance, and reducing the risk of water vapor contact.
Smart Images
Figure CN222356352U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of touch buttons, in particular to a waterproof touch button. Background Art
[0002] Some touch buttons in the prior art include a button housing and internal components, and the internal components include a circuit board. Since the touch buttons in the prior art are widely used, in the event of accidental water ingress, the internal components may be corroded, causing a circuit short circuit, and affecting the service life of the touch buttons. Therefore, the circuit board is waterproofed by glue sealing or a sealing ring. However, the traditional touch button packaging structure leaves a gap between the button housing and the internal circuit board. Therefore, when filling glue, the glue will flow into the front of the touch button PCB board through the gap, etc., which will affect the service life of the touch button PCB board and the use effect of the touch button. Utility Model Content
[0003] To solve the above problems, the purpose of the utility model is to provide a waterproof touch key, which fixes the touch key PCB board in the key box through the cooperation of a clamp ring and an induction spring, so that the PCB board is pressed tightly against the clamp ring to achieve sealing and waterproofing.
[0004] The utility model is implemented by the following method: a waterproof touch key, comprising a box body and a snap ring, wherein a containing cavity is arranged in the box body, an opening communicating with the containing cavity is also arranged on the box body, a touch key PCB board is arranged in the containing cavity, the containing cavity is divided into a first containing cavity and a second containing cavity by taking the touch key PCB board as a boundary, the second containing cavity is located at a side of the touch key PCB board facing the opening; the snap ring is fixedly arranged in the second containing cavity and abuts against a side of the touch key PCB board to limit the touch key PCB board, an induction spring is arranged in the first containing cavity, and a lead of the touch key PCB board extends out of the opening.
[0005] Preferably, one end of the induction spring is fixed on the touch key PCB board, and the other end of the induction spring is pressed against an inner wall of the first accommodating cavity opposite to the touch key PCB board.
[0006] Preferably, the outer circumferential surface of the clamp ring is tightly fitted with the inner circumferential surface of the second accommodating cavity, and the surface of the touch key PCB board facing the second accommodating cavity is fitted with the surface opposite to the clamp ring to form a sealed first accommodating cavity.
[0007] Preferably, the snap ring is clamped on the inner wall of the second accommodating cavity, a plurality of buckles are arranged at intervals on the circumference of the snap ring, and a groove fixedly matched with the buckle is provided on the inner wall of the second accommodating cavity opposite to the snap ring.
[0008] Preferably, a vibration motor is provided on a side of the touch key PCB board facing the first accommodating cavity, and the vibration motor is fixedly connected to the touch key PCB board.
[0009] Preferably, the box body comprises a key board box and a board box lower cover, the board box lower cover is connected to the lower end of the key board box, the board box lower cover and the lower end cover of the key board box are connected to form the accommodating cavity; the opening is opened on the board box lower cover.
[0010] Preferably, the surface where the board box lower cover is connected to the key board box cover is provided with welding ribs, and the key board box and the board box lower cover are fixed by welding, so that the key board box and the board box lower cover are sealed and fixedly connected.
[0011] Preferably, the second accommodating cavity is filled with sealing glue.
[0012] Preferably, a surrounding wall is provided at the opening, and the second accommodating cavity is filled with sealing glue and is filled to a height that is consistent with or lower than the surrounding wall.
[0013] Preferably, the touch button PCB board and the retaining ring are covered with a layer of sealing glue on one side of the second accommodating cavity, and a sealing plug is provided in the second accommodating cavity, and the sealing plug is provided with a threading hole for passing the lead wire; or, the opening is provided with a sealing plug, and the lead wire passes through the opening from the sealing plug.
[0014] The beneficial effects of the present invention are: the present invention provides a waterproof touch key, and compared with the prior art, the present invention has at least the following technical effects: 1. The snap ring can block the gap between the touch key PCB board and the accommodating cavity, and due to the presence of the induction spring, the touch key PCB board and the snap ring can be pressed tightly together to achieve the sealing isolation of the first accommodating cavity and the second accommodating cavity, so that the first accommodating cavity becomes a completely closed cavity, so that even if the second cavity is filled with glue or the second cavity is accidentally filled with water, the glue or external water flow will not enter the first cavity through the gap, so that the poured glue can be prevented from flowing to the front of the touch key PCB board (i.e., the surface facing the first accommodating cavity), and the simple structure helps to reduce production costs. 2. The lower cover of the board box is provided with welding ribs, and the key board box and the lower cover of the board box are welded together, so that the key board box and the lower cover of the board box are sealed together. 3. The lower cover of the board box is provided with an opening, and a surrounding wall is provided at the opening. The second accommodating cavity is filled with glue to a height that is consistent with or lower than the surrounding wall of the opening. In this way, the exposed area of the end face after the glue is poured is greatly reduced, which can reduce the risk of glue peeling off on the side (the glue will break due to aging or the sealing ring will fail, and the waterproof performance will deteriorate.), thereby reducing the risk of water vapor contacting the touch button PCB board through the gap of the glue peeling, thereby achieving better waterproof effect and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a three-dimensional structural schematic diagram of a waterproof touch button.
[0016] Figure 2 The utility model is a component separation schematic diagram of a waterproof touch button.
[0017] Figure 3 A schematic diagram of another component separation of a waterproof touch button of the utility model.
[0018] Figure 4 A schematic diagram of the key board box and the board box lower cover before welding of the utility model.
[0019] Figure 5 yes Figure 4 Schematic diagram of the state before welding at A in the middle.
[0020] Figure 6 yes Figure 4 Schematic diagram of the welding status at A in the middle.
[0021] Figure 7 The utility model is a cross-sectional schematic diagram of a touch key PCB board in a force direction of a waterproof touch key.
[0022] Figure 8 yes Figure 7 A local enlarged schematic diagram of point B in the middle.
[0023] Fig. 9 The utility model is a schematic diagram of a lower cover side of a board box after glue filling of a waterproof touch key.
[0024] Fig.10 This is a schematic diagram of the state of a waterproof touch button after glue filling of the utility model
[0025] Description of the accompanying figures: 1-box body, 11-key board box, 12-board box lower cover, 121-welding ribs, 13-opening, 14-first accommodating cavity, 15-second accommodating cavity, 16-slot, 2-clamping ring, 21-buckle, 3-touch button PCB board, 31-lead, 4-induction spring, 5-sealing glue, 6-vibration motor. DETAILED DESCRIPTION
[0026] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0027] Embodiment 1
[0028] See also Figures 1 to 10A waterproof touch button comprises a box body 1 and a snap ring 2, wherein the box body 1 is provided with a receiving cavity, the box body 1 is further provided with an opening 13 communicating with the receiving cavity, a touch button PCB board 3 is provided in the receiving cavity, the receiving cavity is divided into a first receiving cavity 14 and a second receiving cavity 15 by the touch button PCB board 3 as a boundary, the second receiving cavity 15 is located on the side of the touch button PCB board 3 facing the opening; the snap ring 2 is fixedly arranged in the second receiving cavity 15, and abuts against one side of the touch button PCB board 3 to limit the touch button PCB board 3, an induction spring 4 is provided in the first receiving cavity 14, and a lead 31 of the touch button PCB board 3 extends out of the opening 13. The snap ring 2 can block the gap between the touch button PCB board 3 and the accommodating cavity, and due to the presence of the induction spring 4, the touch button PCB board 3 and the snap ring 2 can be pressed tightly together to achieve sealed isolation between the first accommodating cavity 14 and the second accommodating cavity 15, so that the first accommodating cavity 14 becomes a completely closed cavity, so that even if the second cavity is filled with glue or water accidentally enters the second cavity, the glue or external water flow will not enter the first cavity through the gap, so that the poured glue can be prevented from flowing to the front of the touch button PCB board 3.
[0029] See also Figures 1 to 10 Preferably, one end of the induction spring 4 is fixed on the touch key PCB board 3, and the other end of the induction spring 4 is against the inner wall of the first accommodating chamber 14 opposite to the touch key PCB board 3. Provide a force to press the clamping ring 2 for the touch key PCB board 3. The outer peripheral surface of the clamping ring 2 is tightly fitted with the inner peripheral surface of the second accommodating chamber 15, and the touch key PCB board 3 is gap-matched with the inner wall of the accommodating chamber. The surface of the touch key PCB board 3 facing the second accommodating chamber 15 is fitted with the surface of the clamping ring 2 facing the first accommodating chamber 14 to form a sealed first accommodating chamber 14. The two are tightly fitted to play a sealing and waterproof role, so that the first accommodating chamber 14 is formed into a sealed chamber to protect the circuit components therein. The structure is simple and easy to install, while the cost is low and the waterproof effect is good.
[0030] See also Figures 1 to 9 Preferably, the snap ring 2 is clamped on the inner wall of the second accommodating cavity 15, and a plurality of buckles 21 are arranged at intervals on the circumferential surface of the snap ring 2. A clamping groove 16 fixedly matched with the buckle 21 is opened on the inner wall of the second accommodating cavity 15 opposite to the snap ring 2, and the buckle 21 is clamped in the clamping groove 16 to facilitate fixing the snap ring 2.
[0031] See also Figures 1 to 3Preferably, a vibration motor 6 is provided on one side of the touch button PCB board 3 facing the first accommodating cavity 14, and the vibration motor 6 is fixedly connected to the touch button PCB board 3. When a user uses the waterproof touch button, the vibration motor 6 provides feedback to the user indicating that the button has been touched, thereby enhancing the touch feel.
[0032] See also Figures 1 to 10 Preferably, the box body 1 includes a key board box 11 and a board box lower cover 12, the board box lower cover 12 is connected to the lower end of the key board box 11, and the board box lower cover 12 and the lower end cover of the key board box 11 are connected to form the accommodating cavity; the opening 13 is opened on the board box lower cover 12. The box body 1 is made into a split structure, which is convenient for loading corresponding parts into the accommodating cavity. When pouring glue, the glue is poured from the opening 13, so that the exposed area of the end face after pouring glue is greatly reduced.
[0033] See also Figures 3 to 5 Preferably, the surface where the board box lower cover 12 and the key board box 11 are covered is provided with welding ribs 121, and the key board box 11 and the board box lower cover 12 are fixed by welding, so that the key board box 11 and the board box lower cover 12 are sealed and fixedly connected, and the key box body can achieve a better waterproof effect.
[0034] See also Figures 9 and 10 Preferably, the opening 13 is provided with a surrounding wall, and the second accommodating chamber 15 is filled with the sealing glue 5 and filled to the same height as or lower than the surrounding wall of the opening 13, so that the filled glue will only contact with the air at the opening 13 of the lower cover 12 of the board box (such as Fig.10 As shown in the figure, the exposed area of glue is greatly reduced, the risk of glue peeling off on the side and the contact between water vapor and the touch button PCB board 3 is reduced, and the waterproof effect is better.
[0035] This embodiment has the following working principle:
[0036] The touch key PCB board 3 is first installed into the key board box 11, and the snap ring 2 is pressed into the key board box 11 from the back of the touch key PCB board 3. Since there is a sensing spring 4 on the key PCB board, the sensing spring 4 is compressed to form a force that presses the touch key PCB board 3 toward the snap ring 2, so that the touch key PCB board 3 and the snap ring 2 are tightly fitted together; the snap ring 2 is engaged with the side of the second accommodating cavity 15 of the key and the surface of the snap ring is tightly fitted with the back of the touch key PCB board 3 (the side facing the opening), so that a completely closed cavity is formed on the front of the touch key PCB board 3, and the glue will not flow into the front of the touch key PCB board 3 when pouring glue, so as to avoid the glue affecting the service life of the touch key PCB board and the use effect of the touch key.
[0037] Embodiment 2
[0038] The difference between this embodiment and the first embodiment is that: the touch key PCB board 3 and the clamp ring 2 are covered with a layer of sealing glue (not shown) on one side of the second accommodating cavity 15, and a sealing plug (not shown) is provided in the second accommodating cavity 15, and the sealing plug is provided with a threading hole for passing the lead wire, so as to achieve a double-layer sealing effect and a better waterproof effect; or, the opening 13 is provided with a sealing plug (not shown), and the lead wire passes through the opening 13 from the sealing plug, so as to achieve a waterproof effect without glue injection. The working principle is shown in the first embodiment.
[0039] Several points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, and can be mechanical or electrical connections, or internal connectivity between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change.
[0040] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.
[0041] Finally, the above is only a preferred implementation of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.
[0042] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the utility model should also be regarded as within the protection scope of the utility model.
Claims
1. A waterproof touch button, characterized in that: The invention comprises a box body and a snap ring, wherein a containing cavity is arranged in the box body, and an opening communicating with the containing cavity is also arranged on the box body, a touch key PCB board is arranged in the containing cavity, and the containing cavity is divided into a first containing cavity and a second containing cavity by taking the touch key PCB board as a boundary, and the second containing cavity is located on a side of the touch key PCB board facing the opening; the snap ring is fixedly arranged in the second containing cavity and abuts against a side of the touch key PCB board to limit the touch key PCB board, an induction spring is arranged in the first containing cavity, and a lead of the touch key PCB board extends out from the opening.
2. The waterproof touch button according to claim 1, characterized in that: One end of the induction spring is fixed to the touch key PCB board, and the other end of the induction spring is pressed against an inner wall of the first accommodating cavity opposite to the touch key PCB board.
3. The waterproof touch button according to claim 1, characterized in that: The outer circumferential surface of the clamp ring is tightly fitted with the inner circumferential surface of the second accommodating cavity, and the surface of the touch key PCB board facing the second accommodating cavity is fitted with the surface opposite to the clamp ring to form a sealed first accommodating cavity.
4. The waterproof touch button according to claim 1, characterized in that: The clamping ring is clamped on the inner wall of the second accommodating cavity, a plurality of buckles are arranged at intervals on the circumference of the clamping ring, and a clamping groove fixedly matched with the buckle is opened on the inner wall of the second accommodating cavity opposite to the clamping ring.
5. The waterproof touch button according to claim 1, characterized in that: A vibration motor is provided on a side of the touch key PCB board facing the first accommodating cavity, and the vibration motor is fixedly connected to the touch key PCB board.
6. The waterproof touch button according to claim 1, characterized in that: The box body comprises a key board box and a board box lower cover, wherein the board box lower cover and the lower end cover of the key board box are connected to form the accommodating cavity; the opening is arranged on the board box lower cover.
7. The waterproof touch button according to claim 6, characterized in that: The surface where the board box lower cover and the key board box cover are connected is provided with welding ribs, and the key board box and the board box lower cover are fixed by welding, so that the key board box and the board box lower cover are sealed and fixedly connected.
8. The waterproof touch button according to claim 1, characterized in that: The second accommodating cavity is filled with sealing glue.
9. The waterproof touch button according to claim 8, characterized in that: The opening is provided with a surrounding wall, and the second accommodating cavity is filled with sealing glue and is filled to a height that is consistent with or lower than the surrounding wall.
10. The waterproof touch button according to claim 1, characterized in that: The touch button PCB board and the clamping ring are covered with a layer of sealing glue on one side of the second accommodating cavity, and a sealing plug is provided in the second accommodating cavity, and the sealing plug is provided with a threading hole for passing the lead wire; or, the opening is provided with a sealing plug, and the lead wire passes through the opening from the sealing plug.