CN110952873A

CN110952873A - Refrigerator is with automatic door closing device based on capacitance variation

Info

Publication number: CN110952873A
Application number: CN201911306557.7A
Authority: CN
Inventors: 潘承燕
Original assignee: Individual
Current assignee: Zhongke Bond Tai'an Technology Service Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-04-03
Anticipated expiration: 2039-12-18
Also published as: CN110952873B

Abstract

The utility model provides an automatic door closing device for refrigerator based on electric capacity changes, relates to the electric power field, the power distribution box comprises a box body, the turn trough has been seted up at the middle part of box, and the middle part swing joint of turn trough has the ratch, the middle part fixedly connected with dielectric plate of ratch, the top inner wall fixedly connected with spring of turn trough, the left side fixedly connected with conducting block of spring, the left side fixedly connected with electrical contact of conducting block. This automatic door closing device for refrigerator based on capacitance variation, use through the cooperation of motor with the ratch, when the refrigerator door was opened, the refrigerator door can drive the ratch and roll out the box downwards, make dielectric plate rotate together downwards, lead to the relative area increase of positive plate and negative plate, voltage in the circuit is greater than piezo-resistor's minimum access voltage this moment, thereby make the motor circular telegram, the motor drives the ratch through the gear and upwards rotates, the ratch drives refrigerator door self-closing, thereby the effect of automatic closing door has been reached, effectively avoid forgetting to close the refrigerator door, the normal use of refrigerator has been guaranteed.

Description

Refrigerator is with automatic door closing device based on capacitance variation

Technical Field

The invention relates to the field of electric power, in particular to an automatic door closing device for a refrigerator based on capacitance change.

Background

The refrigerator is an indispensable electric power device in daily life, and fresh fruits or fresh vegetables which are bought are often placed in the refrigerator to achieve the effect of keeping fresh, meat products are often placed in the refrigerator to achieve the effect of prolonging the shelf life, and quick-frozen foods are often placed in the refrigerator to achieve the effect of long-term storage.

Present refrigerator is when using, the condition that the refrigerator door forgotten to close often appears, after the article that the refrigerator was taken out and is wanted, will take the article and directly walk away, lead to the refrigerator door to forget to close, cold air in the refrigerator is whole to scatter and disappear, it is fresh-keeping to the edible material and the fruit of inside to lead to the refrigerator, lead to eating the new freshness decline of material and fruit, rot even, and the refrigerator door does not close, can make inside be in operating condition always, lead to the refrigerator to be in the state of high consumption always, the refrigerator is in the high consumption state for a long time and can make the life of refrigerator reduce to some extent, and can cause the damage to the part of.

Therefore, the automatic door closing device for the refrigerator based on capacitance change solves the problems, achieves the effect of automatically closing the door by matching the motor with the toothed bar, effectively avoids forgetting to close the refrigerator door, ensures the normal use of the refrigerator, achieves the condition of automatically controlling the illuminating lamp by matching the conductive block with the electric contact, saves the power resource, and provides convenience for taking articles in the refrigerator.

Disclosure of Invention

The invention adopts the following technical scheme for realizing the technical purpose: the utility model provides an automatic door closing device for refrigerator based on electric capacity changes, the power distribution box comprises a box body, the turn trough has been seted up at the middle part of box, the middle part swing joint of turn trough has the ratch, the middle part fixedly connected with dielectric plate of ratch, the top inner wall fixedly connected with spring of turn trough, the left side fixedly connected with conducting block of spring, the left side fixedly connected with electrical contact of conducting block, the spacing groove has been seted up at the top of turn trough, the bottom fixedly connected with of ratch rotates the refrigerator door of being connected with the bottom half, the inner wall swing joint of box has the gear with the meshing of ratch right side, the bottom fixedly connected with of gear and box inner wall fixed connection's motor, the inner wall fixedly connected with of box and motor electric connection's piezo-resistor, the inner wall of box just is close to the right side fixedly connected with positive plate of turn trough, the inner wall.

The invention has the following beneficial effects:

1. this automatic door closing device for refrigerator based on capacitance variation, use through the cooperation of motor with the ratch, when the refrigerator door was opened, the refrigerator door can drive the ratch and roll out the box downwards, make dielectric plate rotate together downwards, lead to the relative area increase of positive plate and negative plate, voltage in the circuit is greater than piezo-resistor's minimum access voltage this moment, thereby make the motor circular telegram, the motor drives the ratch through the gear and upwards rotates, the ratch drives refrigerator door self-closing, thereby the effect of automatic closing door has been reached, effectively avoid forgetting to close the refrigerator door, the normal use of refrigerator has been guaranteed.

2. This automatic door closing device for refrigerator based on capacitance variation, cooperation through conducting block and electrical contact is used, the light electric connection in conducting block and the refrigerator, when the refrigerator door is closed, the conducting block is crowded to the right side of spacing groove by the ratch, make the conductive point separation on electrical contact and the spacing groove, lead to the circuit breaking block of light, when the refrigerator door is opened, the conducting block moves left under the effect of spring, make conducting block and conductive point contact, make light circuit contact, illuminate in the refrigerator, thereby the condition of automatic control light has been reached, save electric power resource, and article in the refrigerator of taking provide convenience.

Further, the material of box is rigid plastic material and the shape of box is cabinet-shaped, the shape of revolving groove is the arc and the size of revolving groove is less than the size of spacing groove.

Further, the material of ratch is steel material and the shape of ratch is the arc pole, the shape of dielectric medium board is the size that arc board and dielectric medium plate size are less than the ratch, the diameter that the spring is compression spring and spring is less than the diameter of spacing groove.

Furthermore, the conducting block is made of copper materials, the size of the conducting block is the same as that of the limiting groove, and the electric contact is made of copper materials and is electrically connected with the power supply.

Further, the left side of the limiting groove is fixedly connected with a conductive point matched with the electric contact, the conductive point is electrically connected with the illuminating lamp, the gear is made of a steel needle material, the diameter of the gear is smaller than the radius of the toothed bar, the motor is 5IK90A-CF, the number of poles is 4, the rated power is 90W, and the rated voltage is 220V.

Further, the minimum path voltage of the piezoresistor is smaller than the minimum voltage of the negative plate, the positive plate is an arc-shaped plate, the negative plate is an arc-shaped plate, and the radians of the negative plate and the positive plate are equal.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the gear structure of the present invention;

FIG. 3 is a schematic diagram of a varistor in accordance with the present invention;

FIG. 4 is a partially enlarged view of the portion A in FIG. 1 according to the present invention.

In the figure: 1. a box body; 2. rotating the groove; 3. a rack bar; 4. a dielectric plate; 5. a spring; 6. a conductive block; 7. an electrical contact; 8. a limiting groove; 9. a refrigerator door; 10. a gear; 11. a motor; 12. a voltage dependent resistor; 13. a positive plate; 14. and a negative plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an automatic door closing device for a refrigerator based on capacitance variation comprises a box body 1, the box body 1 is used for fixing each component, the box body 1 is made of rigid plastic material and the box body 1 is cabinet-shaped, a rotary groove 2 is arc-shaped, the size of the rotary groove 2 is smaller than that of a limit groove 8, the middle part of the box body 1 is provided with the rotary groove 2, the rotary groove 2 is used for facilitating the rotation of a toothed bar 3 and limiting the toothed bar 3 to rotate out of the rotary groove 2, the middle part of the rotary groove 2 is movably connected with the toothed bar 3, the toothed bar 3 is used for transmission, the toothed bar 3 is made of steel material and the toothed bar 3 is arc-shaped, a dielectric plate 4 is arc-shaped and the size of the dielectric plate 4 is smaller than that of the toothed bar 3, a spring 5 is a compression spring and the diameter of the spring 5 is smaller than that of the limit groove 8, the middle part of the toothed bar 3 is fixedly connected with the dielectric plate 4, the dielectric plate 4 functions to change the relative area of the positive electrode plate 13 and the negative electrode plate 14.

The spring 5 is fixedly connected to the inner wall of the top of the rotary groove 2, the spring 5 plays a role of fixedly extruding the conductive block 6 to the left side, the conductive block 6 is fixedly connected to the left side of the spring 5, the conductive block 6 is made of copper materials, the size of the conductive block 6 is the same as that of the limiting groove 8, the electrical contact 7 is made of copper materials, the electrical contact 7 is electrically connected with a power supply, the electrical contact 7 is fixedly connected to the left side of the conductive block 6 and plays a role of communicating a circuit, the limiting groove 8 is formed in the top of the rotary groove 2 and plays a role of limiting the moving distance of the conductive block 6, the left side of the limiting groove 8 is fixedly connected with a conductive point matched with the electrical contact 7 and electrically connected with an illuminating lamp, the gear 10 is made of a steel needle material, the diameter of the gear 10 is smaller than that of the toothed rod 3, the motor 11 is 5IK90A-CF, the number of poles is 4, the rated power is 90W, the rated voltage is 220V, the bottom of the rack bar 3 is fixedly connected with a refrigerator door 9 which is rotatably connected with the bottom of the box body 1, and the refrigerator door 9 plays a role in sealing the box body 1.

The inner wall swing joint of box 1 has the gear 10 with 3 right side meshing of ratch, gear 10 plays driven effect, the bottom fixedly connected with of

gear

10 and 1 inner wall fixed connection's of box motor 11, motor 11 plays the effect of providing power, the inner wall fixedly connected with of box 1 and motor 11 electric connection's piezo-resistor 12, piezo-resistor 12 plays the effect of control circuit intercommunication situation, piezo-resistor 12's minimum path voltage is less than the minimum voltage through negative plate 14, positive plate 13 is the arc, negative plate 14 is arc and negative plate 14 equals with positive plate 13's radian, the inner wall of box 1 just is close to the right side fixedly connected with positive plate 13 of rotor slot 2, positive plate 13 and negative plate 14 play the effect of control circuit voltage together, the inner wall of box 1 just is close to the left side fixedly connected with the negative plate 14 of piezo-resistor 12 electric connection of rotor slot 2.

The working principle is as follows: in the initial state as shown in fig. 1, the refrigerator door 9 is clamped with the box 1, and the toothed bar 3 pushes the conductive block 6 to the right, at this time, the relative area of the positive plate 13 and the negative plate 14 is small, and the voltage in the circuit is small and is smaller than the minimum path voltage of the piezoresistor 12.

When opening refrigerator door 9, refrigerator door 9 can drive rack bar 3 and rotate out box 1 downwards, makes dielectric plate 4 rotate together downwards, leads to the relative area increase of positive plate 13 and negative plate 14, and the voltage in the circuit is greater than piezo-resistor 12's minimum access voltage this moment to make 11 circular telegrams of motor, motor 11 drives rack bar 3 through gear 10 and upwards rotates, and rack bar 3 drives refrigerator door 9 self-closing.

Simultaneously, conducting block 6 is crowded to the right side of spacing groove 8 by ratch 3, makes the conductive point separation on electrical contact 7 and the spacing groove 8, leads to the circuit breaking block of light, and when refrigerator door 9 was opened, conducting block 6 moved to the left side under the effect of spring 5, made conducting block 6 and conductive point contact, made light circuit contact, lighted in with the refrigerator.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a refrigerator is with automatic door closing device based on capacitance variation, includes box (1), its characterized in that: the refrigerator is characterized in that a rotary groove (2) is formed in the middle of the box body (1), a toothed bar (3) is movably connected to the middle of the rotary groove (2), a dielectric plate (4) is fixedly connected to the middle of the toothed bar (3), a spring (5) is fixedly connected to the inner wall of the top of the rotary groove (2), a conductive block (6) is fixedly connected to the left side of the spring (5), an electric contact (7) is fixedly connected to the left side of the conductive block (6), a limiting groove (8) is formed in the top of the rotary groove (2), a refrigerator door (9) rotatably connected with the bottom of the box body (1) is fixedly connected to the bottom of the toothed bar (3), a gear (10) meshed with the right side of the toothed bar (3) is movably connected to the inner wall of the box body (1), a motor (11) fixedly connected with the bottom of the gear (10) is fixedly connected with the inner wall of the box body (, the inner wall of the box body (1) is close to the right side of the rotary groove (2) and is fixedly connected with a positive plate (13), and the inner wall of the box body (1) is close to the left side of the rotary groove (2) and is fixedly connected with a negative plate (14) electrically connected with the piezoresistor (12).

2. The automatic door closing device for a refrigerator based on capacitance change as claimed in claim 1, wherein: the box body (1) is made of hard plastic materials, and the box body (1) is cabinet-shaped.

3. The automatic door closing device for a refrigerator based on capacitance change as claimed in claim 1, wherein: the shape of the rotary groove (2) is arc-shaped, and the size of the rotary groove (2) is smaller than that of the limiting groove (8).

4. The automatic door closing device for a refrigerator based on capacitance change as claimed in claim 1, wherein: the material of ratch (3) is steel material and ratch (3) shape is the arc pole, the shape of dielectric plate (4) is the arc board and the size of dielectric plate (4) is less than the size of ratch (3).

5. The automatic door closing device for a refrigerator based on capacitance change as claimed in claim 1, wherein: the spring (5) is a compression spring, and the diameter of the spring (5) is smaller than that of the limiting groove (8).

6. The automatic door closing device for a refrigerator based on capacitance change as claimed in claim 1, wherein: the material of conducting block (6) is copper material and the size of conducting block (6) is the same with the size of spacing groove (8), the material of electric contact (7) is copper material and electric contact (7) and power electric connection.

7. The automatic door closing device for a refrigerator based on capacitance change as claimed in claim 1, wherein: the left side fixedly connected with of spacing groove (8) and electric contact (7) looks adaptation conducting point and light electric connection, the material of gear (10) is the steel needle material and the diameter of gear (10) is less than the radius of ratch (3), the model of motor (11) is 5IK90A-CF, and the number of poles is 4 utmost points, and rated power is 90W, and rated voltage is 220V.

8. The automatic door closing device for a refrigerator based on capacitance change as claimed in claim 1, wherein: the minimum pass voltage of the piezoresistor (12) is smaller than the minimum pass voltage of the negative plate (14), the positive plate (13) is an arc-shaped plate, the negative plate (14) is an arc-shaped plate, and the radians of the negative plate (14) and the positive plate (13) are equal.