CN200979566Y

CN200979566Y - An electronic power meter register

Info

Publication number: CN200979566Y
Application number: CN 200620125723
Authority: CN
Inventors: 汪正雄; 刘卫华; 徐建华
Original assignee: SUZHOU INDUSTRIAL PARK DAYU ELECTRONICS Co Ltd
Current assignee: SUZHOU INDUSTRIAL PARK DAYU ELECTRONICS Co Ltd
Priority date: 2006-11-20
Filing date: 2006-11-20
Publication date: 2007-11-21
Anticipated expiration: 2016-11-20

Abstract

The utility model discloses an electronic electric meter, which comprises a bay, a stepper motor, a speed reducing drive unit, a print wheel group, a carry gear, and a retaining card which are coaxially installed on an inner ratchet-gear wheel of the main wheel, wherein the retaining card is provided with at least a elastic click as well as a locating device, the bay is installed correspondingly for the inner ratchet-gear wheel of the main wheel and is also provided with a matching locating device with that of the retaining card, and the two locating devices are jogged together for limiting the rotation of the retaining card with the main wheel. The utility model is characterized in that the electronic electric meter may not kick back to a wrong reading even under the strong externally-applied alternating field. The utility model has the advantages of the stable and reliable anti-theft and retaining, the simple structure, the convenient installation and operation, the low requirement for the elements, and the small transmission loss, thereby solving the knotty problem which the electric power industry could not overwhelm thoroughly for years.

Description

A kind of electron watt-hour meter register

Technical field the utility model relates to a kind of electron watt-hour meter register, relates in particular to a kind of improvement of electronic impulse formula watt-hour meter register.

Background technology since pulsed watt-hour meter register under the effect of alternating intense magnetic field, can take a turn for the worse, therefore, for a long time, watt-hour meter is perplexing power department with the anti-reverse of pulsed register, anti-electricity-theft problem always, for this reason, a lot of manufacturers action spot brains, or the great wheel tooth that slows down deducted a tooth, or add a non-return jump ring at great wheel deceleration tooth, but not being non-return weak effect, is exactly that part precision requires height, and effect is all undesirable.

The summary of the invention the purpose of this utility model provides a kind of improved electron watt-hour meter register simple and reliable for structure, easy for installation, that the element precision requirement is not really high, transmission loss is little, that can really realize anti-reverse, anti-stealing electricity function.

The purpose of this utility model is to realize by following technical scheme:

A kind of electron watt-hour meter register, comprise frame and be fixed on stepper motor on the frame and transmission speed reducer structure assembled unit, the character wheel group that comprises great wheel, carry gear, the inboard of reduction gearing is provided with the internal tooth ratchet on the great wheel, be placed with non-return card coaxially with it in the internal tooth ratchet, it is characterized in that: described non-return card is provided with at least one elastic pawl; On non-return card, also be provided with locating device, on the described frame with respect to great wheel on the face of internal tooth ratchet, also be provided with simultaneously can with the aforementioned mutual chimeric locating device of being located on the non-return card of locating device, thereby make the set mutual chimeric location of locating device of correspondence position on locating device on the non-return card and the frame, limit of the rotation of non-return card with great wheel.

Locating device set on the described non-return card is made up of at least one jut, in this case, the locating device that is provided with on the face with respect to internal tooth ratchet on the great wheel on the described frame be can with the aforementioned mutual chimeric depressed portions of being located on the non-return card of jut, and the quantity of this depressed portions should be no less than the quantity of being located at the jut on the non-return card.

Another feasible scheme is, locating device set on the described non-return card can be made up of at least one depressed portions, in this case, the locating device that is provided with on the face with respect to internal tooth ratchet on the great wheel on the described frame then be can with the aforementioned mutual chimeric jut of being located on the non-return card of depressed portions, and the quantity of this jut should be less than or equal to the quantity of being located at the depressed portions on the non-return card.

Do not get rid of a kind of like this possibility of scheme in addition: locating device set on the described non-return card is made up of at least one jut and at least one depressed portions, in this case, the locating device that is provided with on the face with respect to the internal tooth ratchet on the great wheel on the described frame be can with aforementioned jut on the non-return card or depressed portions chimeric depressed portions and the jut mutually of being located at, and the quantity that is located at the depressed portions on the frame should be no less than the quantity of being located at the jut on the non-return card, and the quantity that is located at the jut on the frame should be less than or equal to the quantity of being located at the depressed portions on the non-return card.

Depressed portions described in above-mentioned each scheme also can be taked the form of through hole.

Depressed portions that is provided with on the face with respect to internal tooth ratchet on the great wheel on the described frame or the residing position of jut should be corresponding with jut or the residing position of depressed portions on being distributed in non-return card, thereby the character wheel group that is placed with non-return card is able to and the correct assembling and positioning of frame, reaches the effect that the non-return card of restriction rotates with great wheel.

Electron watt-hour meter register of the present utility model, when the watt-hour meter operate as normal, the register great wheel is forward rotation under the effect of stepper motor, transmission speed reducer structure, the elastic pawl that internal tooth ratchet on the great wheel pushes on the non-return card makes it that slight bending take place, and slip over the great wheel steady operation from ratchet; When the watt-hour meter non-normal working, the great wheel counter-rotating, the elastic pawl on the non-return card falls under the repulsion of great wheel internal tooth ratchet in the ratchet of great wheel internal tooth ratchet fully at this moment, and great wheel can't be reversed and be stopped operating, thereby reaches non-return, anti-electricity-theft purpose.In this process, be distributed in that the jut on the relevant position and depressed portions have played the effect that non-return card rotates with great wheel that limits on non-return card and the frame.

The disclosed electron watt-hour meter register of the utility model, under the effect that adds alternating intense magnetic field, can not reverse and move back word, non-return, power-steeling preventing effect is reliable and stable, simple in structure, assembly manipulation is easy, to part do not have excessive demand, transmission loss is very little, conscientiously solve power department and can not get the thoroughly thorny problem of solution for a long time always

Description of drawings Fig. 1 is the utility model one-piece construction synoptic diagram;

Fig. 2 is the structural representation of character wheel group among the utility model embodiment 1;

Fig. 3 is the structural representation of the utility model embodiment 1 mid frame;

Great wheel was rotated in the forward synoptic diagram when Fig. 4 was the utility model register operate as normal;

Great wheel reverse rotation synoptic diagram when Fig. 5 is the utility model register non-normal working;

Fig. 6 is the structural representation of character wheel group among the utility model embodiment 2;

Fig. 7 is the structural representation of the utility model embodiment 2 mid frames.

Embodiment is further described in detail the utility model below in conjunction with drawings and Examples:

Embodiment 1:

As Fig. 1, Fig. 2, shown in Figure 3, it is respectively the utility model electron watt-hour meter register one-piece construction synoptic diagram, the structural representation of character wheel group 3 and frame 1, stepper motor and transmission speed reducer structure assembled unit 2 and the character wheel group 3 that comprises great wheel 31, carry gear 4 is separately fixed on the frame 1, there is an internal tooth ratchet 312 inboard of right side reduction gearing 311 on great wheel 31, non-return card 5 passes print wheel shaft 32 and is placed in the internal tooth ratchet 312, non-return card 5 is provided with two

elastic pawls

51,52, with non-return card 5 on the concentric circumference of center pit 6 on be radially distributed with two

juts

53,54, on the frame 1 with respect to great wheel 31 on the one side of internal tooth ratchet 312, with the jut 53 that is located on the non-return card 5, the position of 54 correspondences be provided with can with

jut

53,54 mutual

chimeric holes

11,12,11,12 be distributed in the concentric circumference of character wheel axis hole 7 on, thereby can utilize the jut 53 on it when making

non-return card

5,54 with frame 1 on the set hole 11 of correspondence position, 12 mutual chimeric location are limited non-return card 5 and are rotated with great wheel 31.The action principle of non-return mechanism when describing register operate as normal and non-normal working respectively below, to help understanding:

During the register operate as normal, stepping motor rotor drives reducing gear and rotates, rotating torque is reached great wheel reduction gearing 311, driving great wheel 31 by it is rotated in the forward, at this moment, the hypotenuse that the inclined-plane of internal tooth ratchet 312 promotes the

elastic pawl

51,52 on the non-return card 5 on the great wheel 31 makes

elastic pawl

51,52 flexural deformations, and slips over along the hypotenuse of

elastic pawl

51,52, but great wheel 31 continous-stable work, this process is embodied in Fig. 4.

Shown in Figure 5, the operating principle when then being the register non-normal working.During the register non-normal working, under the effect that adds alternating intense magnetic field, the stepping motor rotor backward rotation, and rotating torque reaches great wheel reduction gearing 311 the most at last, drive great wheel 31 reverse rotations by it, at this moment, great wheel internal tooth ratchet 312 is faced the straight flange that promotes

elastic pawl

51,52 directly,

ratchet

51,52 opens under the thrust of great wheel internal tooth ratchet 311, stops great wheel 31 counter-rotatings.

Embodiment 2:

Fig. 6, the structural representation of character wheel group 3 and frame 1 when Fig. 7 is the utility model another kind embodiment, among the figure with non-return card 5 on the concentric circumference of center pit 6 on radially-arranged be two holes 55,56, and on the frame 1 with respect to great wheel 31 on the one side of internal tooth ratchet 312, with the hole 55 that is located on the non-return card 5, then be provided with on the position of 56 correspondences can with hole 55,56 mutual

chimeric juts

13,14,13,14 be distributed in the concentric circumference of character wheel axis hole 7 on, thereby make non-return card 5 can utilize hole 55 on it, 56 with frame 1 on the set jut 13 of correspondence position, 14 mutual chimeric location are limited non-return card 5 and are rotated with great wheel 31.Other structures of register and action principle are identical with embodiment 1.

Above embodiment 1, embodiment 2 only are two kinds of exemplary embodiment of the present utility model, in the disclosed scope of technical solutions of the utility model, numerous embodiments can be arranged, and give unnecessary details no longer one by one at this; Non-return mechanism shown in the utility model watt-hour meter register should not only be confined to the counting mechanism of watt-hour meter, and the those of ordinary skill in other field also is easy to expect it is used in other occasion that is fit to.

Claims

1. electron watt-hour meter register, comprise frame (1) and be fixed on stepper motor and the transmission speed reducer structure assembled unit (2) on the frame (1), the character wheel group (3) that comprises great wheel (31), carry gear (4), the inboard that great wheel (31) goes up reduction gearing (311) is provided with internal tooth ratchet (312), be placed with non-return card (5) coaxially with it in the internal tooth ratchet (312), it is characterized in that: described non-return card (5) is provided with at least one elastic pawl (51,52); On non-return card (5), also be provided with locating device, upward go up on the face of internal tooth ratchet (312) in described frame (1) with respect to great wheel (31), also be provided with simultaneously can with the aforementioned mutual chimeric locating device of being located on the non-return card (5) of locating device, thereby make locating device and frame (1) on the non-return card (5) go up the set mutual chimeric location of locating device of correspondence position, limit the rotation of non-return card (5) with great wheel (31).

2. a kind of electron watt-hour meter register according to claim 1, it is characterized in that: described non-return card (5) is gone up set locating device and is made up of at least one jut (53,54), in this case, described frame (1) go up with respect to great wheel (31) go up the locating device that is provided with on the face of internal tooth ratchet (312) be can with aforementioned jut (53,54) the chimeric depressed portions of being located on the non-return card (5) (11,12) mutually, and the quantity of this depressed portions (11,12) should be no less than the quantity of the jut of being located on the non-return card (5) (53,54).

3. a kind of electron watt-hour meter register according to claim 1, it is characterized in that: described non-return card (5) is gone up set locating device by at least one depressed portions (55,56) form, in this case, described frame (1) go up with respect to great wheel (31) go up the locating device that is provided with on the face of internal tooth ratchet (312) be can with the aforementioned depressed portions of being located on the non-return card (5) (55,56) mutual chimeric jut (13,14), and this jut (13,14) quantity should be less than or equal to the depressed portions of being located on the non-return card (5) (55,56) quantity.

4. a kind of electron watt-hour meter register according to claim 1, it is characterized in that: described non-return card (5) is gone up set locating device and is made up of at least one jut and at least one depressed portions, in this case, described frame (1) go up with respect to great wheel (31) go up the locating device that is provided with on the face of internal tooth ratchet (312) be can with aforementioned jut on the non-return card (5) or depressed portions chimeric depressed portions and the jut mutually of being located at, and the quantity that is located at the depressed portions on the frame (1) should be no less than the quantity of being located at the jut on the non-return card (5), and the quantity that is located at the jut on the frame (1) should be less than or equal to the quantity of being located at the depressed portions on the non-return card (5).

5. according to claim 2 or 3 or 4 described a kind of electron watt-hour meter registers, it is characterized in that: described depressed portions (11,12,55,56) also can be the hole.