CN2124249U

CN2124249U - Automatic tension device

Info

Publication number: CN2124249U
Application number: CN 92208768
Authority: CN
Inventors: 赖必伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-30
Filing date: 1992-04-30
Publication date: 1992-12-09

Abstract

The utility model relates to an automatic resisting device using an electric rotary device for automatically pulling or releasing a bearing member, particularly an automatic resisting device used for the drain valve of an automatic washing machine, a clutch and a brake. The utility model is that the electric rotary device (5) installed on a machine frame (1) is used for driving a cam (3) to turn to drive a driven member (2) to move, and thus the bearing member (F) is pulled or released. The electric rotary device (5) can be controlled by a positioning controller (4) to be de-energized and positioned when the cam (3) be in two positions of maintaining the bearing member (F) stretching and making the bearing member (F) reset. Fault, noise and energy consumption can be reduced because the working time of the utility model is short.

Description

Automatic tension device

The utility model relates to a kind of automatic chest expander that utilizes electric tumbler to spur or discharge stressed member automatically, particularly is used in the automatic chest expander on automatic washing machine draining valve and clutch, the brake.

At present, the automatic washing machine of Chu Xianing on the market, its draining valve and clutch, brake are inhaled moving device pulling by same electromagnetism or are discharged, and are inhaling, all sending when putting bigger sound.And in the whole process of draining, the moving device of electromagnetism suction will be worked always, not only damage electromagnetism easily and inhale moving device, and the noise time of sending is more than length and power consumption.Adopting electromagnetism to inhale other occasion that moving device drives stressed member, there is this deficiency equally.

The purpose of this utility model provides a kind of automatically pulling or discharge the automatic chest expander of stressed member of electric tumbler that utilizes, and it is only keeping the stressed member action just to work with making the reset process electricity tumbler of two states conversions of stressed member.

The utility model is to utilize rack-mounted electric tumbler to drive a cam rotation and drive the driven member action, thereby pulling or discharge stressed member F, register control can be controlled electric tumbler and be at cam and keep stressed member F to stretch and make reset two positions outage location of stressed member F.

Owing to this automatic chest expander is to utilize electric tumbler to drive cam rotation to drive the driven member action, thereby pulling or release stressed member F's, and, therefore can reduce fault, noise and energy consumption only keeping stressed member F action just to work with making the reset process electricity tumbler of two states conversions of stressed member F.

Be described in further detail concrete structure of the present utility model below in conjunction with embodiment.

Fig. 1: schematic diagram of the present utility model.

Fig. 2: the utility model adopts the schematic diagram of another kind of driven member structure.

The front view of Fig. 3: Fig. 1,2 cam 3.

The front view of the another kind of structure of Fig. 4: Fig. 1,2 cam 3.

Among Fig. 5: Fig. 1,2 internal wiring of register control 4 and with the circuit connection diagram of electric tumbler 5.

Fig. 6: the internal wiring of brake controller 22 and and register control 4 in circuit connection diagram between the switch 11.

Fig. 1 has described principle of the present utility model.Drawn together by the driven member 2(dotted line that a band angle type straight-bar 6 constitutes with being vertically mounted on the steamboat 9 above it) be inserted in the

hole

7 and 8 that coincide with straight-bar 6 shapes on the frame 1, cam 3 drives rotation by the electric tumbler 5 that is installed on the frame 1.Rotation along with electric tumbler 5, cam 3 pushes steamboat 9 and drives driven member 2 actions, thereby pulling stressed member F, when discharging stressed member F, under the effect of spring force, stressed member F resets, and register control 4 can be controlled electric tumbler 5 and be at cam and keep stressed member F to stretch and make the stressed member F outage location, two positions that resets.Described electric tumbler 5 preferably is equipped with the motor of reduction gearing, or drive cam 3 after the common electric machine drive reduction gearing, so not only can reduce the power of motor, and be in maintenance stressed member F stretch position at cam 3, electric tumbler 5 outage backs keep locating easily.Register control 4(dotted line is drawn together) be two three-terminal switches 11 of controlled thing 10 controls, control thing 10 can be installed on the cam 3, also can be installed on the driven member 2, control thing 10 can be rigid touching piece or magnet, and correspondingly switch 11 is touching switch or magnetic switch.

Fig. 2 has described the principle that the utility model adopts another kind of driven member structure.Be connected at A point hinge with lever 12 by pull bar 14 and constitute driven member 2, pull bar 14 passes hole 15 pulling stressed member F, one end of lever 12 is connected at B point hinge with frame 1, the other end is inserted in 13 li in hole on the frame 1, can be movable back and forth, lever 12 is preferably installed a steamboat 9 in the place that contacts with cam 3.

When Fig. 3 has described the electric tumbler that electric tumbler 5 among Fig. 1,2 rotates for unidirectional (Z direction), the cam structure that is adopted.Drive on the opposite direction that rotates at electric tumbler 5, the profile of cam 3 is to the gradin 17 that preferably has a step to reduce after the distance of centre of gyration O increases gradually, it makes electric tumbler 5 when turning round at the same rate, can reduce the resetting time of stressed member F, like this, when adopting this automatic chest expander to replace draining valve on automatic washing machine and clutch, the used electromagnetism of brake to inhale moving device,, can brake fast equally if run into the brake situation.Installing hole 19 is used for being connected with the output shaft of electric tumbler 5, and the fixing hole 20 in fixedly connected projection 18 is used for cam 3 is fixed on the axle of electric tumbler 5.Steamboat 9 and cam 3 position contacting when keeping stressed member F to stretch preferably are provided with a locator card 16, and this can make cam 3 keep the location better.

Fig. 4 has described the cam structure that adopts when electric tumbler 5 is non-directional alternating current tumbler.This structure makes the locator card 16 of the cam 3 described among Fig. 3 into unidirectional activity screens 21.Be in maintenance stressed member F stretch position at cam 3, electricity tumbler 5 outage location, when electric tumbler 5 when electric, this unidirectional activity screens 21 forces electric tumbler 5 to rotate along a direction (Z direction), behind gradin 17, stressed member F resets, the electric tumbler of register control 4 controls 5 outage location; When electric tumbler 5 once more when electric, gradin 17 forces electric tumbler 5 to rotate along same direction (Z direction).

Fig. 5 has described among Fig. 1,2 in the register control 4 internal wiring of switch 11 and has been connected with the circuit of electric tumbler 5.The normally-closed contact E of switch 11, normally opened contact H be lead-out wire E1, H1 respectively, is connected to an end of electric tumbler 5 behind the common port J lead-out wire J1, the other end lead-out wire I of electric tumbler 5.

When using, lead-out wire E1 is connected to and makes on the control signal end L that stressed member F stretches, and lead-out wire H1 is connected to and makes on the control signal end M that stressed member F resets, and lead-out wire I is connected on the common port K of control signal.When needs pulling stressed member F, signal end L energising, electric tumbler 5 rotates along the Z direction, cam 3 pushes steamboat 9 and drives driven member 2 actions, thereby pulling stressed member F is keeping stressed member F stretch position, control thing 10 makes switch 11 actions, electric tumbler 5 outage location; When needs stressed member F resets, signal end M energising, electric tumbler 5 rotates along the Z direction and discharges stressed member F, and when stressed member F resetted, switch 11 resetted, electric tumbler 5 outage location, thus realize the purpose of this utility model.

When the utility model is used on automatic washing machine; in order to solve the brake problem; increase a brake controller 22 between being preferably in register control 4 and the automatic washing machine program controller being connected; this brake controller 22 is in brake and last stopped status at washing machine; export a signal of controlling electric tumbler 5 runnings to lead-out wire H1, and do not have output signal at other state.

Fig. 6 has described the internal wiring of brake controller 22 and has been connected with circuit between the switch 11 in the register control 4.The main electrode T1 of the bidirectional thyristor in this brake controller 22 is connected to lead-out wire H1, the main electrode T2 lead-out wire S of IGCT, and the control utmost point G of IGCT lead-out wire C after meeting a current-limiting resistance R.

When being applied to automatic washing machine, stressed member F is exactly the pull bar of draining valve and clutch, brake, and lead-out wire E1 and H1 are connected to the draining valve control end L1 and the water intaking valve control end M1 of washing machine respectively, and lead-out wire I is connected to the common port K1 of washing machine control power supply.Lead-out wire S is connected to the input S1 of the draining valve control signal switch of washing machine program controller; lead-out wire C can and connect with lead-out wire E1; also can be connected to washing machine program controller Electric Machine Control end or other control end C1; as long as this control end C1 is in draining, dewatering state output draining valve control signal at washing machine, and has and can get final product for the current loop that IGCT triggers in brake and last stopped status.When draining valve control end L1 switches on, electricity tumbler 5 rotates, cam 3 pushes steamboat 9 and drives from moving 2 actions, thereby the pull bar (F) of pulling draining valve and clutch, brake is keeping this pull bar (F) stretch position, and control thing 10 makes switch 11 actions, because at this moment control end C1 and S1 export the draining valve control signal, so IGCT ends, electric tumbler 5 outage location, washing machine is in draining, dewatering state; When last shutdown, draining valve control end L1 outage, the control utmost point G of IGCT constitutes current loop by the washing machine program controller; IGCT has trigger current to pass through; IGCT is triggered, or when water intaking valve control end M1 switched on, electric tumbler 5 rotated; discharge draining valve and clutch, brake pull bar (F); under the effect of spring force, this pull bar (F) resets, and at this moment switch 11 resets; electricity tumbler 5 outage location, washing machine is in last shutdown or water inlet state.If at dewatering state, the door of wash bucket is opened, the motor for washer outage, draining valve control end L1 outage, IGCT control utmost point G has trigger current to pass through, IGCT is triggered, and electric tumbler 5 drives cam 3 and rotates, and steamboat 9 is behind gradin 17, discharge draining valve and clutch, brake pull bar, under the effect of spring force, this pull bar (F) resets, and brake plays braking action, motor for washer is stopped fast, at this moment switch 11 resets, and electric tumbler 5 outages are located, and reach the purpose of quick brake.

Claims

1, a kind of automatic chest expander that utilizes electric tumbler to spur or discharge stressed member automatically, the electric tumbler [5] that it is characterized in that being installed on the frame [1] is to drive driven member [2] action by driving a cam [3] rotation, thereby pulling or discharge stressed member [F], register control [4] can be controlled electric tumbler [5] and be at cam [3] and keep stressed member [F] to stretch and make reset two positions outage location of stressed member [F].

2, automatic chest expander as claimed in claim 1 is characterized in that described electric tumbler ［ 5 ］ is to be equipped with to export torque after the motor of reduction gearing or common electric machine drive reduction gearing.

3, automatic chest expander as claimed in claim 1 or 2, it is characterized in that described cam ［ 3 ］ drives one-directional rotation by electric tumbler ［ 5 ］, on the opposite direction that electric tumbler ［ 5 ］ drive to rotate, cam ［ 3 ］ profile is to the gradin ［ 17 ］ that has a step to reduce after the distance of the centre of gyration ［ O ］ increases gradually.

4, as claim 1 or 3 described automatic chest expanders, it is characterized in that a locator card ［ 16 ］ being arranged at the chimb corner of described cam ［ 3 ］, when cam ［ 3 ］ turns to the steamboat ［ 9 ］ that makes on the driven member ［ 2 ］ when entering locator card ［ 16 ］, register control ［ 4 ］ is controlled electric tumbler ［ 5 ］ outage location.

5, automatic chest expander as claimed in claim 3, it is characterized in that described electric tumbler ［ 5 ］ is a non-directional alternating current tumbler, on the chimb summit of described cam ［ 3 ］ a unidirectional activity screens ［ 21 ］ is arranged, when the steamboat ［ 9 ］ on described driven member ［ 2 ］ falls into described unidirectional activity screens ［ 21 ］, register control ［ 4 ］ is controlled electric tumbler ［ 5 ］ outage location, when electric tumbler ［ 5 ］ when electric, this unidirectional activity screens ［ 21 ］ forces the electric tumbler ［ 5 ］ can only be along a direction rotation.

6, automatic chest expander as claimed in claim 1 is characterized in that described driven member ［ 2 ］ is a band angle type straight-bar ［ 6 ］ that is vertically installed with a steamboat ［ 9 ］, and it is inserted in the hole ［ 7 ］ and ［ 8 ］ that coincide with it on the support ［ 1 ］.

7, automatic chest expander as claimed in claim 1, it is characterized in that described driven member ［ 2 ］ is to put hinge with lever ［ 12 ］ at ［ A ］ by pull bar ［ 14 ］ to be formed by connecting, one end of lever ［ 12 ］ is connected at ［ B ］ some hinge with frame ［ 1 ］, the other end is inserted in the lining, hole ［ 13 ］ on the frame ［ 1 ］, can be movable back and forth, lever ［ 12 ］ is equipped with a steamboat ［ 9 ］ in the place that contacts with cam ［ 3 ］.

8, automatic chest expander as claimed in claim 1, it is characterized in that described register control ［ 4 ］ is two three-terminal switches ［ 11 ］ of a controlled thing ［ 10 ］ control, the normally-closed contact ［ E ］ of switch ［ 11 ］, normally opened contact ［ H ］ is lead-out wire ［ E1 ］ respectively, ［ H1 ］, be connected to an end of electric tumbler ［ 5 ］ behind common port ［ J ］ lead-out wire ［ J1 ］, the other end lead-out wire ［ I ］ of electricity tumbler ［ 5 ］, keeping stressed member ［ F ］ stretch position, control thing ［ 10 ］ on cam ［ 3 ］ or the described driven member ［ 2 ］ makes switch ［ 11 ］ action, when stressed member ［ F ］ when resetting, switch ［ 11 ］ resets.

9, as claim 1 or 8 described automatic chest expanders; it is characterized in that register control ［ 4 ］ with increase a brake controller ［ 22 ］ between the automatic washing machine program controller is connected; this brake controller ［ 22 ］ is in brake and last stopped status at washing machine; export a signal of controlling electric tumbler ［ 5 ］ rotation to lead-out wire ［ H1 ］, and do not have output signal at other state.

10, automatic chest expander as claimed in claim 9, the main electrode ［ T1 ］ that it is characterized in that the bidirectional thyristor in the described brake controller ［ 22 ］ is connected to lead-out wire ［ H1 ］, the main electrode of IGCT ［ T2 ］ lead-out wire ［ S ］, and the control utmost point ［ G ］ of IGCT lead-out wire ［ C ］ after connecing a current-limiting resistance ［ R ］.