CN2529371Y

CN2529371Y - Code device

Info

Publication number: CN2529371Y
Application number: CN 02226255
Authority: CN
Inventors: 余正明; 史永贵; 石兰中
Original assignee: ZHENGPAI ELECTRONICS CO Ltd HUIZHOU CITY
Current assignee: ZHENGPAI ELECTRONICS CO Ltd HUIZHOU CITY
Priority date: 2002-03-19
Filing date: 2002-03-19
Publication date: 2003-01-01
Anticipated expiration: 2012-03-19

Abstract

The utility model provides a code device which rotatablely controls the picture rolling of the display through the revolving member; and the utility model is characterized in that the revolving member of the code device consisting of a rotor, an indexing disc and a spring is arranged in the sealing space formed by a fixed member which formed by an upper casing and a base; the indexing disc is provided with a grade division conducting strip which is drove to revolve by the rotor, and contacted with the contact at a coding contact clip which is arranged at the internal surface of the base under the function of the elasticity of the spring, then the pulse rectangular wave signal is output by an electric leading-out terminal which is fixed at the base. Compared wit the prior code device, the utility model has the advantages of long service time and high reliability.

Description

A kind of encoder

Technical field

The utility model relates to a kind of being mainly used on computer or the industrial control device to control the device of the picture rolling on the display.

Background technology

Encoder is a kind of revolution of the revolving member by the rotary type electric device, is used for controlling the device of the picture rolling on the display, can be contained on the mouse of computer or on the industrial control device.CN1274109A discloses a kind of structure of this class encoder, it comprises following member: the fixed component that is formed by upper casing and base, the electric terminal member that is rotatably supported in the revolving member on this fixed component and exports the break-make break-make pulse square wave signal that produces when this revolving member rotates, said revolving member is a rotor, one sliding part is installed on it, the sliding contact that this sliding part has three equal circumference angular spacings and conducts mutually, the annular conductive plate of laying along circumference on the sliding contact of this sliding part and the inner surface that is embedded in base contacts, annular conductive film is conducted with the electric terminal that inserts in the base, cross current-carrying part and insulated part spaced apart on the annular conductive film on the base by the sliding contact SLALOM of sliding part, make electric terminal export corresponding pulse square wave signal.The major defect of this class coder structure is that its sliding part is an Elastic Contact slide, for satisfying its elasticity requirement preferably, must adopt thin electrically conductive elastic sheet metal, its mechanical endurance is relatively poor, during the revolution of this sliding part with base on the long-term grinding mutually of annular conductive film, cause mechanical wear easily, elastic fatigue, even worn out, rub, cause thus contact unreliable, cause mess code and product failure; This sliding part very easily is out of shape also because material is thinner, and the difficulty of processing and assembling is higher; In addition, the base of this encoder is to constitute the glyph shape by bottom surface and two side, and it and upper casing surround are not sealed in order to the space that revolving member is installed, and dust, foreign material or pollutant very easily enter product inside, influence the reliability that product electrically contacts.

Summary of the invention

The purpose of this utility model provides a kind of encoder that adopts the new construction revolving member, to improve the dependability and the useful life of encoder;

Further purpose of the present utility model provides a kind of encoder of good airproof performance, further improves the dependability of product.

Structure of the present utility model has following structural elements:

The fixed component that forms by upper casing and base, the electric leading-out terminal member that is rotatably supported in the revolving member on this fixed component and exports the pulse square wave signal that produces when this revolving member rotates, it is characterized in that said revolving member is made of rotor, index dial and spring, the shaft support of rotor is on fixed component, index dial is sleeved in the rotating shaft of rotor and can rotates synchronously with rotor, and spring is installed between index dial and the rotor; The bottom surface of index dial is pasted with the calibration conducting strip towards base on it, this calibration conducting strip is circumferentially formed several evenly spaced insulated parts and constitutes the calibration endless belt; Be provided with the coding contact chip of contact-carrying at the inner surface of base, link to each other with electric leading-out terminal on being fixed on base, the contact of this coding contact chip contacts with the calibration conducting strip; Rotor top towards upper casing, its first-class angle of circumference is provided with some location notchs at interval, and this location notch and one are fixed on the fixed component, and the positioning reed that can produce the positioning function of beating when rotor rotation matches.

In general concrete coder structure commonly used, have three electric leading-out terminals, these three electric leading-out terminals are fixed on the base, be communicated with three coding contact chips of base inner surface respectively, wherein have the contact of a coding contact chip often to contact with the current-carrying part of said calibration conducting strip; The contact of two coding contact chips is positioned between the limb zone of calibration electroconductive elastic sheet in addition, alternately contacts the current-carrying part and the insulated part of calibration conducting strip when rotor rotation.By the exportable two group pulse square wave signals of these three electric terminals.

For solving the sealing problem of product, the utility model is made its base has the structure of leg all around, and the space in order to support said revolving member that it and upper casing are surrounded is a closure.

The encoder of this band spring structure that the utility model is designed, adopt spring structure to make calibration conducting strip and coding contact chip produce contact pressure, simple in structure, the conduction contact is reliable, because its coding contact chip is fixed, can adopt thicker material, and is not yielding, wear-resistant, thus the useful life and the dependability of product improved greatly.In addition, the full seal type structure to the slewing equipment sealing provided by the utility model is compared with existing product, has the dust of preventing, foreign material or pollutant and enters the inner advantage of product, has further improved the dependability of product.

Description of drawings

Fig. 1 is the front view of the utility model encoder;

Fig. 2 is the end view of the utility model encoder;

Fig. 3 is the rearview of the utility model encoder;

Fig. 4 is the front view of the substructure member of the utility model encoder;

Fig. 5 is the end view of the substructure member of the utility model encoder;

Fig. 6 is the cutaway view of the substructure member of the utility model encoder;

Fig. 7, Fig. 8, Fig. 9 are respectively the vertical view of the index dial member of the utility model encoder, main (analysing and observe) figure, the upward view looked;

Figure 10, Figure 11, Figure 12 be respectively the utility model encoder vertical view, main (analysing and observe) figure, the upward view looked of rotor component;

Figure 13, Figure 14 are respectively vertical view, the front view of the spring member of the utility model encoder;

Figure 15 is the assembling schematic diagram of rotor, spring and the index dial member of the utility model encoder;

Figure 16, Figure 17 are respectively front view, the end view of the positioning reed member of the utility model encoder;

Figure 18, Figure 19 are respectively front view, the end view of the upper case member of the utility model encoder;

Figure 20 be Fig. 1 along A-A to cutaway view.

Embodiment

The CONSTRUCTED SPECIFICATION of an embodiment of the utility model encoder is described below in conjunction with Fig. 1～Figure 20.

This encoder has following structural elements:

Upper casing 1, base 2, rotor 3, index dial 4, spring 5, metal positioning reed 6; Upper casing 1 and base 2 constitute fixed component, leg around base 2 has, it and upper casing form an enclosed space 201, the revolving member that is made of rotor 3, index dial 4 and spring 5 is installed in this closed space, the assembling form of rotor 3, spring 4 and index dial 5 each member as shown in figure 15, index dial 5 has a central shaft hole 501, index dial is sleeved in the rotating shaft 301 of rotor 3 by this axis hole, spring 4 is installed between rotor 3 and the index dial 5, is fixed among the spring groove 302 and 502 on rotor and the index dial; The shaft support of rotor 3 also is equipped with metal positioning reed 6 on rotor 3 among the axis hole 201 of the axis hole 101 of upper casing 1 and base 2, the contour structures after the assembling such as Fig. 1～and shown in Figure 3, internal structure is as shown in figure 20.Below the concrete structure of each member is described in further detail again: the structure of index dial 4 such as Fig. 7～shown in Figure 9, its bottom surface is embedded with one division conducting strip 503, and this calibration conducting strip is circumferentially formed several evenly spaced insulated parts 504 and constitutes the calibration endless belt; The structure of base 2 such as Fig. 4～shown in Figure 6, leg 202 around it has, there are three electric leading-out terminals 203,204 and 205 to be fixed on the base, the part that these three electric leading-out terminals stretch into base inner surface forms three contact chips of independently encoding, have contact 203a, 204a and 205a respectively, the contact of three coding contact chips touches the corresponding site of calibration conducting strip respectively, and wherein, contact 203a often contacts with the current-carrying part of said calibration conducting strip; In addition two contact 204a and 205a are positioned between the limb zone of calibration electroconductive elastic sheet, alternately contact the current-carrying part and the insulated part of calibration conducting strip when rotor rotation.By three exportable two group pulse square wave signals of electric leading-out terminal; The structure of rotor 3 such as Figure 10～shown in Figure 12, it has rotating shaft 301, the center of rotating shaft has a hex hole 304, the spring groove 302 that one fixing spring 4 is arranged below the rotor, on the whole circumference of the upper surface of rotor, having with the rotating shaft is the center, along the location notch 303 of radial many equal circumference angular spacings of radial direction, this location notch be fixed in upper casing 1 on and the metal positioning reed 6 be close on the groove cooperate, can when rotor rotation, produce the positioning function of beating; The structure of metal positioning reed 6 such as Figure 16 and shown in Figure 17, it is a metal spring sheet, its center has a big ellipse hole 601, two fixing holes 602, one ledge 603 is arranged at the top, during assembling, this positioning reed is fixed in by two fixing holes 602 on the fixing hole 102 of upper casing 1, and the ledge 603 at top pastes and drops in the location notch 303 of rotor 3 upper surfaces; The structure of upper casing 1 such as Figure 18, shown in Figure 19, it is that a metal plate forms through bending process, two sidewalls 103 that curve the right angle are arranged, each sidewall has two pawls (two side has 4 pawls), 104 and one installation foot 105, there is the fixing hole 102 of 101 two stationary positioned reeds 6 of an axis hole in the front of upper casing, during installation, 4 pawl bendings of two side are clamped base fixing on base.

Claims

1. encoder, it has following structural elements:

The fixed component that forms by upper casing (1) and base (2), the electric leading-out terminal member that is rotatably supported in the revolving member on this fixed component and exports the pulse square wave signal that produces when this revolving member rotates, it is characterized in that said revolving member is made of rotor (3), index dial (4) and spring (5), the shaft support of rotor (3) is on fixed component, index dial (4) be sleeved on rotor (3) the axle on can rotate synchronously with rotor, spring (5) is installed between index dial (4) and the rotor (3); The bottom surface of index dial (4) is pasted with calibration conducting strip (503) towards base (2) on it, this calibration conducting strip is circumferentially formed several evenly spaced insulated parts (504) and constitutes the calibration endless belt; Be provided with the coding contact chip of contact-carrying at the inner surface of base (2), link to each other with electric leading-out terminal on being fixed on base, the contact of this coding contact chip contacts with calibration conducting strip (503); The upper surface of rotor (3) is provided with some location notchs (303) with the equal circumference angular spacing towards upper casing (1) on it, and this location notch and one are fixed on the fixed component, and the positioning reed (6) that can produce the positioning function of beating when rotor rotation matches.

2. encoder according to claim 1, it is characterized in that being mounted with on the said base (2) three electric terminals (203,204,205), be communicated with three coding contact chips of base inner surface respectively, wherein have the contact (203a) of a coding contact chip often to contact with the current-carrying part of said calibration conducting strip (503); The contact (204a, 205a) of two coding contact chips is positioned between the limb zone of calibration electroconductive elastic sheet in addition, alternately contacts the current-carrying part and the insulated part of calibration conducting strip (503) when rotor rotation.

3. encoder according to claim 1 is characterized in that said base (2) has the four sides leg, and the space in order to support said revolving member that it and upper casing are surrounded is a closure.