Mute touchpad module without balance strip
By designing the elastic arm and engaging structure in the silent touchpad module without balance bars, the pressing feeling and safety hazards caused by the falling off of the balance bars is solved, and the silent effect of the touchpad is realized, improving the user experience.
Patent Information
- Application Number
- CN202421364804.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The balance bar structure in the existing touch panel module is prone to fall off, resulting in no feel of pressing and experiencing safety hazards of puncture of lithium batteries. At the same time, the friction between the balance bar and the outer bracket will produce abnormal noises, affecting the user experience.
Design a silent touch panel module without balance strips, which balances the left and right sides by setting downwardly elastic arms on the inner reinforcement plate, and uses the engagement structure of the plastic middle plate and the outer bracket to combine the elastic arms. Interference with the touch switch enables the generation of pressing feel and achieves the silent effect by reducing frictional noise.
It effectively avoids pressing without touch and lithium battery spontaneous combustion accidents caused by the fall off of the balance bar, and at the same time realizes the silent effect of the touchpad, improving the user experience.
Smart Images
Figure CN222514702U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of touch panels, in particular to a silent touch panel module without a balance bar. Background Art
[0002] Electronic devices such as laptops are developing towards being lighter, thinner, more user-friendly, and providing better user experience. As a component that frequently interacts with users, the touchpad has a particularly high user experience.
[0003] The existing mainstream touchpad modules are equipped with a balance bar structure, but during the use of the computer, there is a risk of the balance bar falling off. Once the balance bar falls off, there is no pressing feel, and there is also a risk of puncturing the lithium battery on the back of the touchpad, causing the computer battery to self-ignite, posing a great safety hazard. On the other hand, the touchpad module with a balance bar structure will produce abnormal noise during use, which will affect the user experience. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, the utility model aims to provide a silent touch panel module without a balance bar.
[0005] The technical solution adopted by the utility model is as follows: a silent touch panel module without a balance bar, including a PCBA mainboard, a touch switch integrated on the back of which; including an inner reinforcement plate, which is arranged on the back of the PCBA mainboard, and the two sides of the inner reinforcement plate are integrally provided with downwardly tilted elastic arms, and the edges of the inner reinforcement plate at the pressing position are bent downward to form a reinforcement folded edge; including a plastic middle plate, which is arranged on the back of the inner reinforcement plate, and the center of the plastic middle plate is integrally provided with a boss that is on the same axis as the touch switch and interferes with it; and also includes an external bracket, which is arranged on the back of the plastic middle plate, and the external bracket is respectively engaged with the inner reinforcement plate and the plastic middle plate, and the elastic arm and the external bracket interfere with each other.
[0006] In a preferred embodiment, the outer edge of the plastic middle plate fits with the inner end surface of the reinforcing folded edge.
[0007] In a preferred embodiment, the inner reinforcement plate is provided with first buckles equidistantly along its length direction, the outer bracket is provided with second buckles corresponding to the positions of the first buckles, and the first buckles are engaged with the second buckles.
[0008] In a preferred embodiment, the plastic middle plate is provided with third buckles equidistantly along its length direction, the outer bracket is provided with fourth buckles corresponding to the positions of the third buckles, and the third buckles are engaged with the fourth buckles.
[0009] In a preferred embodiment, the interference amount between the elastic arm and the outer bracket and the interference amount between the touch switch and the boss are both 0.1 mm.
[0010] In a preferred embodiment, a glass plate is further included, and the glass plate is bonded to the front side of the PCBA mainboard.
[0011] In a preferred embodiment, the upper and lower ends of the inner reinforcement plate are respectively bonded to the PCBA main board and the plastic middle board by double-sided tape.
[0012] In a preferred embodiment, it further comprises a conductive copper foil, wherein the conductive copper foil is electrically connected to the PCBA mainboard, and one end of the conductive copper foil extends outside the outer bracket.
[0013] In a preferred embodiment, a plurality of mounting seats are circumferentially arranged on the outer end surface of the outer bracket, and mounting holes and limiting holes are opened on the mounting seats.
[0014] In summary, due to the adoption of the above-mentioned technical scheme, the beneficial effects of the utility model are: the balance bar structure in the traditional touchpad module is cancelled, and two elastic arms are designed from the internal reinforcement plate to balance the left and right sides, so as to achieve the purpose of balancing the pressing pressure of the left and right corners, which can effectively avoid the computer battery self-ignition accidents caused by the balance bar falling off and the puncturing of the lithium battery during the use of the touchpad. At the same time, there is no abnormal sound caused by the collision and friction between the balance bar and the external bracket during the pressing process, and the touchpad is close to silent during use, which brings customers a better user experience and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall explosion three-dimensional structure of the utility model;
[0016] Figure 2 It is a three-dimensional structural schematic diagram of the combination of the plastic middle plate, the inner reinforcement plate and the outer bracket in the utility model;
[0017] Figure 3 It is a schematic diagram of the cross-sectional plan structure of the utility model as a whole from the side;
[0018] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at a in the middle;
[0019] Figure 5 It is a three-dimensional structural schematic diagram of the inner reinforcement plate in the utility model;
[0020] Figure 6 It is a schematic diagram of the planar structure of the combination of the plastic middle plate and the inner reinforcement plate in the utility model;
[0021] Figure 7It is a schematic diagram of the planar structure of the outer bracket in the utility model;
[0022] Figure 8 It is a schematic diagram of the overall top plan structure of the utility model.
[0023] Markings in the figure: 1-glass plate, 2-PCBA mainboard, 21-touch switch, 3-double-sided tape, 4-inner reinforcement plate, 41-elastic arm, 42-first buckle, 43-reinforcement folding edge, 5-conductive copper foil, 6-plastic middle plate, 61-boss, 62-third buckle, 7-outer bracket, 71-second buckle, 72-mounting seat, 73-fourth buckle. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0025] A silent touch panel module without a balance bar, referring to Figure 1-8 , including a PCBA mainboard 2, a touch switch 21 is integrated on the back of the PCBA mainboard 2, and an inner reinforcement plate 4 is arranged on the back of the PCBA mainboard 2. Both sides of the inner reinforcement plate 4 are integrally provided with downward-tilted elastic arms 41, and the balance bar structure in the traditional touchpad module is cancelled. Two elastic arms 41 are designed from the inner reinforcement plate 4 to balance the left and right sides, so as to achieve the purpose of balancing the pressing pressure of the left and right corners, which can effectively avoid the computer battery self-ignition accident caused by the balance bar falling off during the use of the touchpad and the puncturing of the lithium battery.
[0026] The touch switch 21 is a pot piece.
[0027] Furthermore, it also includes a plastic middle plate 6, which is arranged on the back side of the inner reinforcement plate 4, and a boss 61 is integrally provided at the center of the plastic middle plate 6, which is on the same axis as the touch switch 21 and interferes with it; it also includes an external bracket 7, which is arranged on the back side of the plastic middle plate 6, and the external bracket 7 is respectively engaged with the inner reinforcement plate 4 and the plastic middle plate 6, and the elastic arm 41 and the external bracket 7 interfere with each other, and the boss 61, the touch switch 21 and the touch pad main body form a lever state, when the lower left corner or the lower right corner of the touch pad is pressed, the touch switch 21 is pressed down with the boss 61 by the lever principle, thereby generating a pressing feel. After the above design, there is no abnormal sound caused by the collision and friction between the balance bar and the external bracket 7 during the pressing process, and the touch pad is close to a silent effect during use, which can bring better user experience to customers.
[0028] The two sides of the outer bracket 7 are inwardly recessed to form a concave surface corresponding to the elastic arm 41 extending therein, which can assist in locating the position of the elastic arm 41 and avoid deviation of the elastic arm 41 when it is pressed downward.
[0029] Furthermore, the interference amount between the elastic arm 41 and the outer bracket 7 and the interference amount between the touch switch 21 and the boss 61 are both 0.1 mm.
[0030] Furthermore, the edge of the pressing position of the inner reinforcement plate 4 is bent downward to form a reinforcement fold 43, and the outer edge of the plastic middle plate 6 is fitted with the inner end surface of the reinforcement fold 43. The cooperation between the reinforcement fold 43 and the inner reinforcement plate 4 can assist in positioning the plastic middle plate 6 to ensure the installation accuracy of the plastic middle plate 6. Secondly, it can also increase the strength of the module pressing area, which can better ensure the pressing feel.
[0031] Furthermore, the inner reinforcement plate 4 is provided with first buckles 42 equidistantly along its length direction, the outer bracket 7 is provided with second buckles 71 corresponding to the position of the first buckles 42, the first buckles 42 and the second buckles 71 are engaged, the plastic middle plate 6 is provided with third buckles 62 equidistantly along its length direction, the outer bracket 7 is provided with fourth buckles 73 corresponding to the position of the third buckles 62, the third buckles 62 and the fourth buckles 73 are engaged, and the purpose of limiting and fixing the touchpad module in the Z direction can be achieved through the cooperation of the first buckle 42 and the second buckle 71 as well as the third buckle 62 and the fourth buckle 73, thereby ensuring the strength of the overall assembly and avoiding the separation of parts after multiple pressing.
[0032] Among them, there are at least four first buckles 42, second buckles 71, third buckles 62 and fourth buckles 73. The buckle structure is a commonly used connection structure in the prior art, and the specific shape and how to achieve the snap fit will not be elaborated here.
[0033] Furthermore, it also includes a glass plate 1, which is bonded to the front side of the PCBA mainboard 2. The upper and lower ends of the internal reinforcement plate 4 are respectively bonded to the PCBA mainboard 2 and the plastic middle plate 6 through double-sided tape 3. After bonding, it is pressurized by a pressure-maintaining device. The pressure-maintaining parameters are: air pressure 0.6MPa, and pressure-maintaining time 6 seconds, so as to ensure the strength of the overall bonding.
[0034] Furthermore, it also includes a conductive copper foil 5, which is electrically connected to the PCBA mainboard 2, one end of the conductive copper foil 5 extends outside the external bracket 7, and the conductive copper foil 5 is electrically connected to the main control board (not shown in the figure) in the computer, so as to realize the communication connection between the touch panel module and the computer body.
[0035] Furthermore, a plurality of mounting seats 72 are circumferentially provided on the outer end surface of the outer bracket 7, and mounting holes and limit holes are provided on the mounting seats 72, wherein holes and limit posts corresponding to the mounting holes and the limit holes are reserved in the computer (not shown in the figure), and the installation position of the outer bracket 7 can be limited by the cooperation of the limit holes and the limit posts, thereby ensuring the subsequent installation accuracy of the entire touchpad module.
[0036] The outer bracket 7 and the inner reinforcement plate 4 are preferably made of aluminum alloy material, which is not limited here.
[0037] To summarize, the balance bar structure in the traditional touchpad module is eliminated, and two elastic arms 41 are designed from the inner reinforcement plate 4 to balance the left and right sides, so as to achieve the purpose of balancing the pressing pressure of the left and right corners. This can effectively avoid the computer battery self-ignition accidents caused by the balance bar falling off and the lithium battery being punctured during the use of the touchpad. At the same time, there is no abnormal sound caused by the balance bar colliding or rubbing with the external bracket during the pressing process. The touchpad is close to silent during use, which brings better user experience to customers and is worthy of promotion.
[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A silent touch panel module without a balance bar, characterized in that: include: PCBA motherboard, with a touch switch integrated on the back; An inner reinforcement plate, which is arranged on the back of the PCBA mainboard, and downward-tilted elastic arms are integrally provided on both sides of the inner reinforcement plate, and the edges of the inner reinforcement plate at the pressing position are bent downward to form a reinforcement folded edge; A plastic middle plate, which is arranged on the back of the inner reinforcing plate, and a boss which is coaxial with the touch switch and has an interference fit is integrally provided at the center of the plastic middle plate; The outer bracket is arranged on the back side of the plastic middle plate. The outer bracket is respectively connected with the inner reinforcing plate and the plastic middle plate by clamping, and the elastic arm and the outer bracket interfere with each other.
2. A silent touch panel module without a balance bar as claimed in claim 1, characterized in that: The outer edge of the plastic middle plate is in contact with the inner end surface of the reinforcing folded edge.
3. The silent touch panel module without a balance bar as claimed in claim 1, characterized in that: The inner reinforcing plate is provided with first buckles equidistantly along its length direction, and the outer bracket is provided with second buckles corresponding to the positions of the first buckles, and the first buckles are engaged with the second buckles.
4. The silent touch panel module without a balance bar as claimed in claim 1, characterized in that: The plastic middle plate is provided with third buckles equidistantly along its length direction, the outer bracket is provided with fourth buckles corresponding to the positions of the third buckles, and the third buckles are engaged with the fourth buckles.
5. The silent touch panel module without a balance bar as claimed in claim 1, characterized in that: The interference amount between the elastic arm and the outer bracket and the interference amount between the touch switch and the boss are both 0.1 mm.
6. The silent touch panel module without a balance bar as claimed in claim 1, characterized in that: It also includes a glass plate, which is bonded to the front side of the PCBA mainboard.
7. The silent touch panel module without a balance bar as claimed in claim 1, characterized in that: The upper and lower ends of the inner reinforcement plate are respectively bonded to the PCBA main board and the plastic middle board through double-sided adhesive.
8. The silent touch panel module without a balance bar as claimed in claim 1, characterized in that: It also includes a conductive copper foil, which is electrically connected to the PCBA mainboard, and one end of the conductive copper foil extends outside the outer bracket.
9. The silent touch panel module without a balance bar as claimed in claim 1, characterized in that: A plurality of mounting seats are circumferentially arranged on the outer end surface of the outer bracket, and mounting holes and limiting holes are opened on the mounting seats.