CN202904762U

CN202904762U - Improved membrane keyboard and POS terminal

Info

Publication number: CN202904762U
Application number: CN201220563720.5U
Authority: CN
Inventors: 黄明辉; 王钰卓
Original assignee: PAX Computer Technology Shenzhen Co Ltd
Current assignee: PAX Computer Technology Shenzhen Co Ltd
Priority date: 2012-10-29
Filing date: 2012-10-29
Publication date: 2013-04-24
Anticipated expiration: 2022-10-29

Abstract

The utility model provides an improved membrane keyboard and a POS terminal. The improved membrane keyboard comprises a digital membrane sheet, a metal dome, a PCB, key gold fingers arranged on the PCB and a key layer, wherein the digital membrane sheet and the metal dome are sequentially arranged above the key gold fingers, the key layer is arranged above the metal dome, and the upper surface of the PCB is equipped with electronic components. The POS terminal comprises a shell used for fixing the key layer. With the newly-added key layer, the accommodating space of the upper surface of the PCB in the POS terminal can be increased, an unoccupied position on the upper surface of the PCB can be used to arrange more electronic components, the utilization rate of the PCB can be improved, and the production cost can be reduced.

Description

A kind of improved membrane keyboard and POS terminal

Technical field:

The utility model relates to a kind of membrane keyboard, is a kind of improved membrane keyboard and the POS terminal of using this membrane keyboard specifically.

Background technology:

Now, along with the development of electronic technology, electronic equipment requires more and more higher to one-piece construction, not only requires small and exquisite, exquisite, also sensitive, comfortable.Common as a kind of membrane keyboard, membrane keyboard are a kind of very thin, keyboards of being widely used in the mobile products such as mobile phone, multimedia terminal, financial sale terminal.Existing membrane keyboard comprises digital diaphragm A1, pot young sheet A2, keyboard pcb board A3, a kind of existing structure as shown in Figure 1, its keyboard pcb board A3 upper surface is because the ultra-thin requirement of membrane keyboard, so that keyboard pcb board A3 can only install electronic devices and components A4 at lower surface, wasted the erection space of upper surface, reduced the utilization rate of keyboard pcb board A3, thereby made production cost too high; Another kind of existing structure as shown in Figure 2 also comprises a flexible PCB A5, this keyboard pcb board A3 is in order to utilize the erection space of upper surface, be used for installing electronic devices and components A4, increase by one flexible PCB A5 and be electrically connected with keyboard pcb board A3 between the young sheet A2 of pot and keyboard pcb board A3, this structure has not only realized increasing the accommodation space of keyboard pcb board A3 upper surface, also guaranteed the keypress function of film key, but the price of flexible PCB A5 is higher, brings very large pressure for the saving production cost.

The utility model content:

The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of POS terminal that improves pcb board utilization rate, the membrane keyboard that reduces production costs and use this membrane keyboard is provided.

In order to realize the foregoing invention purpose, the utility model has adopted following technical scheme:

A kind of improved membrane keyboard, comprise digital diaphragm, pot young sheet, pcb board and be located at button golden finger on the described pcb board, described digital diaphragm and the young sheet of pot are installed in described button golden finger top successively, comprise that also one is installed in the key layer of the young sheet of described pot top, described pcb board upper surface also is equipped with electronic devices and components.

Described key layer is silica gel push-button.

The bottom surface of described key layer is provided with a pressurization lug boss.

Described pressurization lug boss is corresponding to the home position of the young button of the young sheet pot of described pot.

The height of described key layer is more than or equal to the height of described electronic devices and components.

A kind of POS terminal comprises above-mentioned arbitrary described improved membrane keyboard.

Described POS terminal also comprises a housing, and described housing upper surface offers fixed orifice.

Described key layer is installed in the described fixed orifice.

The utility model has the following advantages with respect to prior art after adopting technique scheme:

First, the improved membrane keyboard of the utility model increases a key layer newly, can make pcb board increase the accommodation space of upper surface in the POS terminal, makes the vacant position of pcb board upper surface can be used for installing more electronic devices and components, improve the utilization rate of pcb board, thereby reduce production costs; The height of its key layer is more than or equal to the height of electronic devices and components, so that electronic devices and components are avoided extruding in producing assembling, has improved production security.

The second, this improved membrane keyboard uses silica gel push-button, can increase the elasticity of button; Its silica gel push-button increases by a lug boss, and lug boss and the young center of circle of pot matching design can guarantee that the young sheet of film key pot when pressing effectively contacts with the button golden finger, thereby strengthen film key actuator function and action accuracy.

The 3rd, use the POS terminal of this membrane keyboard, utilize the fixed orifice of offering on its housing to cooperate silica gel push-button is installed, so that silica gel push-button is easier in assembling process, overcome the problem that cooperates off normal to bring, and made overall construction design more exquisite of POS terminal.

Description of drawings:

Fig. 1 is a kind of existing film keyboard construction schematic diagram;

Fig. 2 is another kind of existing film keyboard construction schematic diagram;

Fig. 3 is the utility model film keyboard construction decomposing schematic representation;

Fig. 4 is the utility model POS terminal shell-film keyboard construction decomposing schematic representation;

Fig. 5 is the utility model silica gel push-button lug boss and the young chip architecture diagrammatic cross-section of pot.

Embodiment:

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

Referring to Fig. 3, Fig. 4 and Fig. 5, a kind of improved membrane keyboard that provides according to the utility model, comprise digital diaphragm 1, pot young sheet 2 (also can use other thin key sheets in the prior art), pcb board 3 and the button golden finger 4 of being located on the pcb board 3, described digital diaphragm 1 and the young sheet 2 of pot are installed in button golden finger 4 tops successively, comprise that also one is installed in the key layer 5 of the young sheet of pot 2 tops, described key layer 5 materials are preferably silica gel, also can be other resilient materials (elastomeric material) or hard material, newly-increased key layer 5 can make pcb board 3 increase the accommodation space of upper surface in the POS terminal, make the vacant position of pcb board 3 upper surfaces can be used for installing more electronic devices and components 6, improve the utilization rate of pcb board 3, thereby reduce production costs; Described key layer 5 is silica gel push-button, for increasing the elasticity of button; Its bottom surface is provided with a pressurization lug boss 51, and corresponding to the home position of 2 pots of young buttons 21 of the young sheet of pot, this structural design can guarantee that the young sheet 2 of film key pot when pressing effectively contacts with button golden finger 4, thereby strengthens film key actuator function and action accuracy.

Described pcb board 3 upper surfaces also are equipped with electronic devices and components 6, and the height of key layer 5 so that electronic devices and components 6 are avoided extruding in producing assembling, has improved production security more than or equal to the height of electronic devices and components 6.

The utility model also provides a kind of POS terminal of using this membrane keyboard, and the POS terminal is used this membrane keyboard, not only makes the outward appearance of POS terminal exquisiter, attractive in appearance, and its inner structure can maximize rationally and utilizes; This POS terminal also comprises a housing 7, described housing 7 upper surfaces offer fixed orifice 71, fixed orifice 71 is used for installing key layer 5 (silica gel push-button), utilize the fixed orifice 71 of offering on the housing 7 to cooperate silica gel push-button 5 is installed, so that silica gel push-button 5 is easier in assembling process, overcome the problem that cooperates off normal to bring, and made overall construction design more exquisite of POS terminal.

Claims

1. improved membrane keyboard, comprise digital diaphragm (1), pot young sheet (2), pcb board (3) and be located at button golden finger (4) on the described pcb board (3), described digital diaphragm (1) and the young sheet of pot (2) are installed in described button golden finger (4) top successively, it is characterized in that: comprise that also one is installed in the key layer (5) of the described young sheet of pot (2) top, described pcb board (3) upper surface also is equipped with electronic devices and components (6).

2. a kind of improved membrane keyboard according to claim 1 is characterized in that: described key layer (5) is silica gel push-button.

3. a kind of improved membrane keyboard according to claim 2 is characterized in that: the bottom surface of described key layer (5) is provided with a pressurization lug boss (51).

4. a kind of improved membrane keyboard according to claim 3 is characterized in that: described pressurization lug boss (51) is corresponding to the home position of the described young sheet of pot (2) the young button of pot (21).

5. a kind of improved membrane keyboard according to claim 1, it is characterized in that: the height of described key layer (5) is more than or equal to the height of described electronic devices and components (6).

6. a POS terminal is characterized in that: comprise arbitrary described improved membrane keyboard in the claim 1 to 5.

7. a kind of POS terminal according to claim 6, it is characterized in that: described POS terminal also comprises a housing (7), described housing (7) upper surface offers fixed orifice (71).

8. a kind of POS terminal according to claim 7, it is characterized in that: described key layer (5) is installed in the described fixed orifice (71).