CN214477061U - Noise reduction structure of conductive rubber key - Google Patents

Abstract

A noise reduction structure of a conductive rubber key comprises a base, a circuit board assembly, conductive rubber, a sliding block, a shell and a button, wherein the circuit board assembly is arranged on the base and sleeved with the shell; the key is supported above the counter bore of the conductive rubber through the elastic key bowl opening. The utility model provides a great striking abnormal sound appears easily after the button resilience in traditional conductive rubber button structure, influences the problem of driving the travelling comfort.

Description

Noise reduction structure of conductive rubber key

Technical Field

The utility model relates to an automobile switch field especially relates to a structure of making an uproar falls in conductive rubber button.

Background

With the rapid development of the automobile industry, on one hand, in order to meet the driving comfort of people, more and more functions are endowed on the automobile, and on the other hand, in order to improve the product safety, various control switches on the automobile are upgraded into a low-current or LIN/CAN integrated signal type from a high-current on-load type.

The switches for implementing various functions of the automobile can be classified into a knob type, a PUSH type, a button type and an emerging touch type from the operation modes. Except for knobs and touches, the other two main functional internal structures are basically micro switches and conductive rubber structures. The conductive rubber structure has the characteristics of good handfeel adjustability, good integration, low cost and the like, and has greater popularization advantage compared with a microswitch. However, due to the structural characteristics of the conductive rubber, under the condition of ensuring good hand feeling, larger impact abnormal sound is often generated after the button rebounds, and the comfort is affected. Therefore, it is necessary to invent a noise reduction structure for conductive rubber keys, which can solve the problem of rebound impact noise generated by the particle structure of the current universal standard keys.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a structure of making an uproar falls in conductive rubber button solves traditional conductive rubber button structure and appears great striking abnormal sound easily after the button resilience, influences the problem of driving the travelling comfort.

The utility model provides a technical scheme that its technical problem adopted is:

a noise reduction structure of a conductive rubber key comprises a base, a circuit board assembly, conductive rubber, a sliding block, a shell and a button, wherein the circuit board assembly is arranged on the base and sleeved with the shell; the key is supported above the counter bore of the conductive rubber through the elastic key bowl opening.

Furthermore, in order to prevent the shaking abnormal sound, the sliding block and the key are provided with a pre-pressing amount of 0.1-0.2 mm.

The utility model has the advantages that: the utility model discloses an optimize the structure, open the counter bore on conductive rubber to support the button in the counter bore top through taking elastic bowl mouth, after pressing the button, delayed the speed that the button kick-backed, effectively reduced the striking noise of slider and the spacing department of shell buckle.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is the utility model relates to a cross-sectional view of structure of making an uproar falls in conductive rubber button.

Fig. 2 is an enlarged view of the structure of the circuit board assembly and the conductive rubber part of the present invention, showing the key and the counter bore structure of the conductive rubber.

Fig. 3 is a force value curve of the key of the middle conductive rubber of the present invention.

Detailed Description

As shown in fig. 1 and 2, a noise reduction structure for a conductive rubber key comprises a base 1, a circuit board assembly 2, conductive rubber 3, a slider 4, a housing 5 and a button 6, wherein the base 1 is provided with the circuit board assembly 2 and is sleeved with the housing 5, the circuit board assembly 2 is provided with the conductive rubber 3, the slider 4 is arranged above the conductive rubber 3, the slider 4 is movably connected with the housing 5 through a buckle structure, the button 6 is fixedly arranged on the slider 4, the conductive rubber 3 is provided with the key 31, a counter bore 34 is formed in the conductive rubber 3 at a position opposite to the key 31, and conductive particles 32 are arranged at the lower end of the key 31; the key 31 is supported above a counterbore 34 of the conductive rubber 3 by a resilient key bowl 33.

The structure can realize the pressing elasticity of the key 31, and the key 31 enters the counter bore 34 when pressed down, and the counter bore 34 structure is utilized to delay the rebound speed of the key 31, thereby reducing the impact noise at the buckling limit position of the sliding block 4 and the shell 5.

In order to prevent the shaking abnormal sound, the pre-pressing amount of 0.1-0.2 mm is designed for the sliding block 4 and the key 31.

When the conductive rubber circuit board assembly is used, the sliding block 4 is driven to move downwards together by pressing the button 6, the sliding block 4 presses the key 31 on the conductive rubber 3 to move downwards, the key 31 penetrates through the counter bore 34, and finally, conductive particles (nickel particles) on the key 31 are communicated with a contact on the circuit board assembly 2, so that the product function is realized; after the button 6 is released, the button 6 and the slider 4 return to the initial position under the resilience of the conductive rubber key.

As shown in the key force value graph of the conductive rubber shown in fig. 3, the curve ranges of the stroke S0 and the force F0 are the structural stroke and force value curves related to the present patent, it can be seen that a smoother pressing can be achieved when the key 31 starts to be pressed down, and the impact between the pressed key 31 and the circuit board assembly 2 is effectively buffered.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited to the above embodiments, and various modifications made by the method concept and technical solution of the present invention or those directly applied to other applications without modification fall within the protection scope of the present invention.

Claims (2)

1. A noise reduction structure of a conductive rubber key comprises a base (1), a circuit board assembly (2), conductive rubber (3), a sliding block (4), a shell (5) and a button (6), wherein the circuit board assembly (2) is arranged on the base (1) and sleeved with the shell (5), the conductive rubber (3) is arranged on the circuit board assembly (2), the sliding block (4) is arranged above the conductive rubber (3), the sliding block (4) is movably connected with the shell (5) through a buckle structure, and the button (6) is fixedly arranged on the sliding block (4), and is characterized in that a counter bore (34) is formed in the position, opposite to a contact of the circuit board assembly (2), of the conductive rubber (3), a key (31) is arranged above the counter bore (34), and conductive particles (32) are arranged at the lower end of the key (31); the key (31) is supported above a counter bore (34) of the conductive rubber (3) through a key bowl opening (33) with elasticity.

2. The noise reduction structure of the conductive rubber key as claimed in claim 1, wherein the pre-pressing amount of 0.1-0.2 mm is set between the sliding block (4) and the key (31).

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