CN2249885Y

CN2249885Y - Point contact type automatic door opener for refrigerator

Info

Publication number: CN2249885Y
Application number: CN 95227331
Authority: CN
Inventors: 贺玉强
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-11-24
Filing date: 1995-11-24
Publication date: 1997-03-19
Anticipated expiration: 2005-11-24

Abstract

The utility model discloses an automatic door opener of a point contact type refrigerator, which comprises a shell, wherein one end of the shell is provided with a motor, and the motor is connected with a control circuit; the output shaft of the motor is connected with a driving gear on a gear shaft through a speed reducing mechanism, the gear is meshed with a rack, one end of the rack is fixed on a sliding plate, the sliding plate is fixedly connected on a sliding block, one end of a mandril with an energy storage spring sleeved thereon is inserted into the sliding block, and the other end of the mandril is an opening of a mandril head on a shell of the device; the lower side of the sliding block is connected with a return spring. The device is convenient for opening the refrigerator door, is convenient for cleaning the refrigerator, has no influence on the refrigerator, and can replace a handle of the refrigerator door.

Description

Point contact type refrigerator automatic door operator

The utility model relates to a kind of automatic door operator of refrigerator.

Existing refrigerator all is that pulling is opened the door, and there is following shortcoming in it: refrigerator integral body is stressed when 1, opening, and influence service life thereby easily produce vibration, 2, two hands all take thing the time marquis or when cooking hand wet, when greasy dirt is arranged use inconvenient, 3, inconvenient scrub clean.

The purpose of this utility model is to provide a kind of point contact type refrigerator automatic door operator, makes to open the door conveniently, and easy to clean do not have influence to refrigerator itself again.

The technical solution of the utility model is as follows:

This device has a housing, the end dress motor of housing, and this motor inserts can control the control circuit that it changes, stops; The output shaft of motor connects driven wheel on the gear shaft through reducing gear, this wheel and rack engagement, one end of this tooth bar is fixed on the slide plate, this slide plate fixedly is connected on the slide block, have push rod one end that is with energy-storaging spring on it to be inserted in the slide block, the other end is the opening part of top at this device case; The bottom of slide block connects a return spring, and the other end of spring is fixed on the motor casing; The other end of above-mentioned tooth bar connects another slide plate, connects the normally-closed contact sliding panel on this slide plate, and a sheet metal is arranged on this plate, and long closed contact fixed head is arranged on sliding panel, and it is a metallic plate.

Its preferred version of said control circuit is that AC power meets full-wave rectifier QD through transformer B, the negative pole of output end ground connection of rectifier, and anodal branch four tunnel, a tunnel connects the positive pole of capacitor C, the minus earth of capacitor C; The second the tunnel connects the positive pole of dc source E through resistance R, and the negative pole of power supply E is ground connection also; Third Road is succeeded electrical equipment J, K switch successively ₁, K ₂, ground connection again, K switch ₁Contact J with relay _K1In parallel; The four the tunnel succeeds the contact J of electrical equipment successively _K2, motor D ground connection again; When pressing K switch ₁The time, relay J adhesive, its contact J _K1, J _K2Closure, machine operation then, through slowing down and transmission device ejects push rod, the door of refrigerator just has been opened, at this moment, the sheet metal on the normally-closed contact sliding panel and the long closed contact fixed head then K that staggers ₂Disconnect, motor D has just quit work, and push rod is got back to initial position under the effect of return spring.

Advantage of the present utility model is: even 1, your both hands easy to use hold thing or full hand greasy dirt as long as click press button lightly with a certain joint of the back of the hand, just open automatically; 2, reduce the complexity of external form, integral body smoothly is convenient to cleaning; Integral body is subjected to external force and the vibration that produces when 3, avoiding opening the door, thereby prolongs its service life; 4, the dual-purpose power failure of this device AC and DC also can be used.

Fig. 1 is the utility model structural representation;

Fig. 2 is a control circuit schematic diagram of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing.

Can one see the structure of this device by Fig. 1, the end dress motor (8) of housing (24), this motor inserts can control the control circuit that it changes, stops; Binding post (7) is arranged on the motor, plug (6) is arranged on the housing (24); The output shaft of motor connects gear (4), gear (25) engagement on gear (4) and the gear shaft (2), gear (26) engagement on coaxial gear (3) and the gear shaft (1), driven wheel (10) on the gear shaft (1) and tooth bar (11) engagement, one end of this tooth bar is fixed on the slide plate (22), slide plate (22) fixedly is connected on the slide block (14), one push rod (16) that is with energy-storaging spring (20) on it is arranged, the one end is inserted in the slide block (14), and the other end is the opening part of top (17) at this device case; (15) be the push rod sliding tray, the bottom of slide block (14) connects a return spring (21), and the other end of spring is fixed on the shell of motor (8); The other end of above-mentioned tooth bar (11) connects another slide plate (5), and slide plate (5) connects normally-closed contact sliding panel (12), and a sheet metal (13) is arranged on this plate (12), and long closed contact fixed head (9) is arranged on sliding panel (12), and it is a metallic plate.Fixedly gusset (23) is arranged under two sliding panels (22), (5), and (18) are pilot hole, and (19) are locating hole.

Can see its control circuit by Fig. 2, it is that AC power meets full-wave rectifier QD through transformer B, the negative pole of output end ground connection of rectifier, anodal four tunnel, one tunnel positive pole that connects capacitor C, the minus earth of capacitor C of dividing; The second the tunnel connects the positive pole of dc source E through resistance R, and the negative pole of power supply E is ground connection also; The positive pole of power supply E connects the positive pole of a diode D again, and its negative pole connects the positive pole of capacitor C, and this diode D is used to protect dc source, and Third Road is succeeded electrical equipment J, K switch successively ₁, K ₂, ground connection again, K switch ₁Contact J with relay _K1In parallel; The four the tunnel succeeds the contact J of electrical equipment successively _K2, motor D ground connection again; When pressing K switch ₁The time, relay J adhesive, its contact J _K1, J _K2Closure, then machine operation ejects push rod (16) through deceleration and transmission device, and the door of refrigerator just has been opened, and at this moment, the sheet metal on the normally-closed contact sliding panel (13) staggers with long closed contact fixed head (9), then K ₂Disconnect, motor D has just quit work, and push rod (16) is got back to initial position under the effect of return spring (21).

Claims

1, a kind of point contact type refrigerator automatic door operator, it is characterized in that: it has a housing (24), the end dress motor (8) of housing, this motor inserts can control the control circuit that it changes, stops; The output shaft of motor connects driven wheel (10) on the gear shaft (1) through reducing gear, this wheel and rack (11) engagement, one end of this tooth bar is fixed on the slide plate (22), this slide plate fixedly is connected on the slide block (14), one push rod (16) that is with energy-storaging spring (20) on it is arranged, the one end is inserted in the slide block (14), and the other end is the opening part of top (17) at this device case; The bottom of slide block (14) connects a return spring (21), and the other end of spring is fixed on the shell of motor (8); The other end of above-mentioned tooth bar (11) connects another slide plate (5), connects normally-closed contact sliding panel (12) on the slide plate (5), and a sheet metal (13) is arranged on this plate (12), and long closed contact fixed head (9) is arranged on sliding panel (12), and it is a metallic plate.

2, point contact type refrigerator automatic door operator according to claim 1, it is characterized in that: its control circuit is that AC power meets full-wave rectifier QD through transformer B, the negative pole of output end ground connection of rectifier, anodal branch four tunnel, one the tunnel connects the positive pole of capacitor C, the minus earth of capacitor C; The second the tunnel connects the positive pole of dc source E through resistance R, and the negative pole of power supply E is ground connection also; Third Road is succeeded electrical equipment J, K switch successively ₁, K ₂, ground connection again, K switch ₁Contact J with relay _K1In parallel; The four the tunnel succeeds the contact J of electrical equipment successively _K2, motor D ground connection again; When pressing K switch ₁The time, relay J adhesive, its contact J _K1, J _K2Closure, then machine operation ejects push rod (16) through deceleration and transmission device, and the door of refrigerator just has been opened, and at this moment, the sheet metal on the normally-closed contact sliding panel (13) staggers with long closed contact fixed head (9), then K ₂Disconnect, motor D has just quit work, and push rod (16) is got back to initial position under the effect of return spring (21).