CN111140086A

CN111140086A - Plane code identifying wheel structure

Info

Publication number: CN111140086A
Application number: CN201911412615.4A
Authority: CN
Inventors: 支钞; 王月; 屈明山; 李严军; 李寅鑫; 王支荣; 唐彬; 张德; 谢晋
Original assignee: Institute of Electronic Engineering of CAEP
Current assignee: Institute of Electronic Engineering of CAEP
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-05-12

Abstract

The invention discloses a planar code wheel structure, which comprises at least two code wheels, wherein the end surfaces of two adjacent code wheels are provided with overlapping parts, and a plurality of gear teeth are arranged on the end surfaces which are opposite to each other in an overlapping way; when the gear teeth on the overlapped opposite end surfaces are engaged, the code is correct, and the code identifying wheel can normally rotate; when the gear teeth on the overlapped opposite end surfaces cannot be engaged, the code is incorrect, and the code identifying wheels cannot normally rotate. The micro-mechanical-system code discriminator is simple in structure, only is designed into a single-layer structure, reduces the height of a plurality of layers compared with the traditional structure, can realize the function of accurate code discrimination on the basis of simplifying the structure, can completely pass through micro-machining, can use the MEMS mode for mass production and processing, and completely meets the development requirement of the modern micro-code discriminator.

Description

Plane code identifying wheel structure

Technical Field

The invention relates to the technical field of micro-coders, in particular to a planar code wheel structure.

Background

The mechanical cipher lock is a safety device, and with the rapid development of semiconductor manufacturing process and ultra-precision machining technology, the micro-mechanical code discriminator mechanism becomes one of the keys for realizing the micro-cipher lock, especially the gear type code discriminator mechanism.

The UQS code identification structure used in the initiating explosive device usually uses two sets of gears meshing in opposite directions, and the working principle is that the code identification is carried out by the stepping motion of two gears with the same rotation direction. For example, in the article "discriminator mechanism in micromechanical combination lock" of vol 18, No. 6 of mechanical design and research, 12.2002, a gear-type discriminator mechanism is disclosed, and a specific gear train structure is shown in fig. 1. The code identifying gear set comprises two groups of gears, each group of gears is driven by a respective driver, the working principle of the code identifying gear set is that the codes are identified through the stepping motion of the gears, and if the codes are correct, the gears normally rotate; if the password is incorrect, two rounds of the password are interfered and immediately locked.

In combination with the above code identifying structure, it can be seen that the current code wheel generally consists of three to multiple layers of gears, so the used fine processing method is extremely complex, specifically refer to the article "UQS mechanism research of micro-mechanical coded lock code identifying mechanism and its process realization of" new technology of new century "and digital design and manufacture, 2005 th 5 th edition, the code wheel in the article is a 5-layer structure, 3 layers of gears are separated by 2 layers of gaskets, and the structure is shown in fig. 2. In order to reduce assembly errors and fit errors, the 'integrated' processing is carried out by adopting a quasi-LIGA technology based on SU-8 glue, and the processing technology is shown in figure 3.

As can be seen from the above-mentioned documents, the conventional discriminator structure has a complicated gear train structure and a complicated micromachining process, so that there is a demand for a micro-discriminator having a simple structure and a micromachining process.

Disclosure of Invention

The invention aims to solve the problems and provides a plane code wheel structure which is simple in structure compared with the traditional technology, simplifies the micro-machining process on the basis of structure simplification and is particularly suitable for the development requirement of modern micro-coders.

In order to achieve the purpose, the invention adopts the following technical scheme:

a plane code wheel structure is characterized in that: the device comprises at least two identifying wheel, wherein the end surfaces of two adjacent identifying wheels are provided with overlapped parts, and a plurality of gear teeth are arranged on the end surfaces which are overlapped and opposite;

when the gear teeth on the overlapped opposite end surfaces are engaged, the code is correct, and the code identifying wheel can normally rotate;

when the gear teeth on the overlapped opposite end surfaces cannot be engaged, the code is incorrect, and the code identifying wheels cannot normally rotate.

The radii of the code wheels are the same, the inner rings are used for mounting gear shafts, and the diameters of the inner rings are D.

The end face of the code wheel is provided with n annular track rings concentric with the inner ring, and the width of each annular track ring is d.

The teeth of a cogwheel all designs for the rectangle, and the length and width of the teeth of a cogwheel are a, b respectively, and satisfy:

a+b＜d；

wherein, the circumferential angle between two adjacent identifying code wheels is theta, and theta value range is: theta is more than or equal to 0 degree and less than or equal to 180 degrees.

The gear teeth are arranged radially on the annular track rings, one or more gear teeth being designed on each annular track ring according to the specific design.

The invention has the following beneficial effects:

the micro-mechanical-system code discriminator is simple in structure, only is designed into a single-layer structure, reduces the height of a plurality of layers compared with the traditional structure, can realize the function of accurate code discrimination on the basis of simplifying the structure, can completely pass through micro-machining, can use the MEMS mode for mass production and processing, and completely meets the development requirement of the modern micro-code discriminator.

Drawings

Fig. 1 is a schematic view of the structure of an authentication gear train involved in the "authenticator mechanism in micromechanical combination lock" of the background art.

Fig. 2 is a schematic structural diagram of a code wheel set in the 'UQS mechanism research of a micromechanical coded lock authentication mechanism and its process implementation' of the background art.

Fig. 3 is a schematic diagram of processing of a code wheel set in the 'UQS mechanism research of a micromechanical coded lock authentication mechanism and its process implementation' of the background art.

Fig. 4 is a gear diagram of a conventional structure.

FIG. 5 is a schematic view of an authentication wheel of the present invention.

Figure 6 is a schematic view of the engagement of two wheels according to the present invention.

FIG. 7 is a schematic top view of the end of an encoder wheel according to the present invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

Example 1

As shown in fig. 5-6, a planar code wheel structure comprises at least two code wheels with the same diameter, wherein the end surfaces of two adjacent code wheels are provided with overlapping parts, and a plurality of gear teeth are arranged on the end surfaces which are opposite to each other in an overlapping manner;

as shown in FIGS. 6-7, the inner rings of the code wheel are all used for mounting the gear shaft, and the diameters of the inner rings are all D.

a+b＜d；

wherein, the circumferential angle between two adjacent code wheels is theta.

The planar code wheel structure is used for code discrimination:

Example 2

Based on the structure of the embodiment 1-2, the planar code wheel structure can be designed with the following specific parameters:

n=3，D=2，d=0.4mm，a=0.18mm，b=0.1mm，θ=45°。

it can be seen that the circumferential angle between two adjacent identifying wheels is 45 degrees, the diameter of the inner ring of each identifying wheel is 2, three annular track rings are designed, and the sum of the length a and the width b of each wheel tooth is smaller than the width of each annular track ring.

The code wheel with the structure is simpler than the traditional structure, only one layer of gear structure needs to be designed, the operability of micro-machining is improved, the function of accurate code identification can be realized, and the code wheel completely meets the development requirement of modern micro-coders compared with the traditional conventional design.

Claims

1. A plane code wheel structure is characterized in that: the device comprises at least two identifying wheel, wherein the end surfaces of two adjacent identifying wheels are provided with overlapped parts, and a plurality of gear teeth are arranged on the end surfaces which are overlapped and opposite; the teeth of a cogwheel all designs for the rectangle, and the length and width of the teeth of a cogwheel are a, b respectively, and satisfy:

a+b＜d；

wherein:

the inner rings of the code identifying wheels for mounting the gear shafts have the same diameter, and the diameters of the inner rings are D;

the end face of each code wheel is provided with n annular track rings concentric with the inner ring, and the width of each annular track ring is d;

the circumferential angle between two adjacent code wheels is theta, and the theta value range is as follows: theta is more than or equal to 0 degree and less than or equal to 180 degrees.

2. The planar code wheel structure as claimed in claim 1, wherein: when the gear teeth on the overlapped opposite end surfaces are engaged, the password is correct, and the authentication wheels normally rotate;

3. The planar code wheel structure as claimed in claim 1, wherein: the gear teeth are arranged radially on the annular track rings, one or more gear teeth being designed on each annular track ring according to the specific design.