Low-temperature controller for household appliances

Abstract

The utility model relates to the technical field of household electrical appliance temperature controllers, in particular to a low temperature controller for household electrical appliances, which comprises a temperature controller body, the temperature controller body consists of a main device shell and a temperature adjusting knob, a capillary tube and a temperature adjusting rotating shaft are arranged on the main device shell, the temperature adjusting rotating shaft and the temperature adjusting knob are fixedly arranged, and a probe is arranged on the capillary tube. A refrigerator inner plate is arranged on the left side of the temperature controller body, a through hole is formed in the refrigerator inner plate, a damping shaft sleeve is arranged in the through hole, a positioning stud is arranged on the temperature adjusting knob, a pressing disc and a column rotating cap are arranged on the positioning stud, an ejector rod is arranged on the pressing disc, a positioning suction cup is arranged on the ejector rod, an elastic backing ring is arranged on the column rotating cap, and a finger catching groove is formed in the column rotating cap. And a damping coating is arranged in the finger lock groove. The positioning performance of the temperature adjusting knob of the pressure type temperature controller for the household appliance refrigerator is improved, the convenience of rotating the column rotating cap and the anti-slipping performance when a finger is inserted are improved, and the elastic comfort when the finger rotates the temperature adjusting knob is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliance thermostats, in particular to a low-temperature thermostat for household appliances. Background Art

[0002] Low-temperature thermostats are commonly used in refrigerators among household appliances.

[0003] The type of low-temperature thermostat commonly used in household appliance refrigerators is a pressure-type thermostat. The pressure-type thermostat generally consists of a main shell, a membrane box mounting plate, a capillary, a probe, a temperature control shaft, a cam, a spring, a fixed electrical contact, and a mounting plate. A retractable copper cavity is preset on the membrane box mounting plate, and a moving electrical contact is set on the retractable copper cavity. At the same time, the retractable copper cavity is preset to be filled with temperature-sensitive gas, and a temperature control knob is preset on the temperature control shaft.

[0004] The specific principle is that by turning the temperature control knob, the temperature control shaft and the cam are driven to rotate and the distance between the fixed contact and the moving contact is adjusted. The spring is used for positioning, and the probe monitors the temperature inside the refrigerator in real time. As the temperature inside the refrigerator rises, the volume of the temperature-sensitive gas in the retractable copper cavity will expand, thereby driving the retractable copper cavity to extend. After the moving contact and the fixed contact are in contact, the circuit is connected, and the compressor is energized to cool the refrigerator.

[0005] At present, the existing pressure-type thermostats for household appliances and refrigerators are generally installed on the inner panel of the refrigerator cabinet. After the temperature adjustment knob is turned, it is generally positioned only by the rebound force of the spring. This method is poor. If it is hit by external force, the temperature adjustment knob will rotate, affecting the temperature setting effect, and thus greatly reducing the positioning performance of the temperature adjustment knob of the pressure-type thermostat for household appliances and refrigerators. Utility Model Content

[0006] The purpose of the present invention is to solve the above-mentioned shortcomings in the prior art and to propose a low-temperature thermostat for household appliances.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A low-temperature thermostat for household appliances is designed, comprising a thermostat body, the thermostat body consisting of a main housing and a temperature adjustment knob. The main housing is provided with a capillary tube and a temperature adjustment shaft, the temperature adjustment shaft being fixedly mounted to the temperature adjustment knob. The capillary tube is provided with a probe. A refrigerator inner plate is provided on the left side of the thermostat body, the refrigerator inner plate having a through hole formed therein, and a damping bushing is provided in the through hole.

[0009] The temperature adjustment knob is provided with a positioning stud, the positioning stud is provided with a pressure plate and a column rotation cap, the pressure plate is provided with a push rod, and the push rod is provided with a positioning suction cup;

[0010] An elastic gasket is provided on the column rotating cap, a finger buckle groove is opened on the column rotating cap, and a damping coating is provided in the finger buckle groove.

[0011] Furthermore, the pressure plate is a disc-shaped structure as a whole, and the push rod and positioning suction cup are a group, with a total of four groups arranged in a circle. The positioning suction cup is made of highly elastic plastic material, which is wear-resistant, durable and resistant to low temperatures, and can be stably adsorbed and positioned with the surface of the refrigerator inner panel.

[0012] Furthermore, the thermostat body is fixedly arranged at the right end of the inner plate of the refrigerator, the cross section of the damping sleeve is a T-shaped structure and is fixedly arranged in the through hole, and the temperature adjustment shaft is damping-sleeved with the damping sleeve.

[0013] Furthermore, the column rotating cap is a trapezoidal structure as a whole, the elastic gasket is arranged on the right end surface of the column rotating cap, the temperature adjustment knob is provided with an open groove, and an elastic layer is provided in the open groove.

[0014] Furthermore, the positioning stud is threadedly connected to the temperature control knob, and there is a gap between the right end surface of the temperature control knob and the left end surface of the refrigerator inner plate to avoid friction and collision with the refrigerator inner plate when the temperature control knob is turned.

[0015] Furthermore, the finger buckle groove is an arc-shaped inner groove as a whole, and there are two finger buckle grooves symmetrically arranged in the upper and lower parts. Two fingers of a single hand can be inserted into the finger buckle grooves at the same time and rotated, which is very convenient to operate.

[0016] Furthermore, the damping coating is evenly coated along the inner groove wall of the finger buckle groove. The damping coating is a silicone coating with a thickness of eighty to ninety microns, which is resistant to low temperatures and prevents the inserted fingers from slipping.

[0017] The utility model provides a low-temperature thermostat for household appliances, which has the following beneficial effects:

[0018] 1. The utility model is provided with a temperature control knob having a positioning stud, a positioning suction cup and a damping sleeve structure, and an elastic gasket structure. When the temperature control knob is not rotated, the positioning stud on the temperature control knob can be stably squeezed and adsorbed on the inner plate of the refrigerator through the positioning suction cup. At the same time, combined with the damping sleeve and the elastic gasket, the temperature control knob is prevented from rotating on its own, thereby greatly improving the positioning performance of the temperature control knob of the pressure-type thermostat for household appliances refrigerators.

[0019] 2. The utility model provides a finger buckle groove structure with a damping coating on the column rotating cap, thereby improving the convenience of rotating the column rotating cap and preventing the finger from slipping when inserting.

[0020] 3. The utility model further improves the elastic comfort of the finger when turning the temperature adjustment knob by providing an open groove structure with an elastic layer on the temperature adjustment knob. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of the state in which the positioning stud of the utility model is not threadedly installed on the temperature control knob;

[0022] Figure 2 This is a three-dimensional diagram of the state in which the positioning stud of the utility model has been threadedly installed on the temperature adjustment knob;

[0023] Figure 3 For the utility model Figure 1 A three-dimensional schematic diagram of the positioning stud;

[0024] Figure 4 For the utility model Figure 2 mid-front view cross-section;

[0025] Figure 5 For the utility model Figure 3 Front perspective view of the center locating stud.

[0026] In the figure: 1 thermostat body; 11 main device shell; 12 capillary tube; 13 probe; 2 refrigerator inner plate; 21 through hole; 3 damping bushing; 31 temperature control shaft; 4 temperature control knob; 41 opening slot; 42 elastic layer; 5 positioning stud; 51 pressure plate; 6 ejector rod; 61 positioning suction cup; 7 column rotating cap; 71 elastic gasket; 8 finger buckle groove; 81 damping coating. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figure 1-5 A low-temperature thermostat for household appliances includes a thermostat body 1, which is composed of a main shell 11 and a temperature adjustment knob 4. The main shell 11 is provided with a capillary tube 12 and a temperature adjustment shaft 31. The temperature adjustment shaft 31 is fixed to the temperature adjustment knob 4. A probe 13 is provided on the capillary tube 12. A refrigerator inner plate 2 is provided on the left side of the thermostat body 1. The refrigerator inner plate 2 is provided with a through hole 21. A damping bushing 3 is provided in the through hole 21.

[0029] The temperature control knob 4 is provided with a positioning stud 5, the positioning stud 5 is provided with a pressure plate 51 and a column rotation cap 7, the pressure plate 51 is provided with a push rod 6, and the push rod 6 is provided with a positioning suction cup 61;

[0030] The column rotating cap 7 is provided with an elastic gasket 71, and the column rotating cap 7 is provided with a finger buckle groove 8, and the finger buckle groove 8 is provided with a damping coating 81. The thermostat body 1 is a low-temperature thermostat for household appliances, which is a commonly used pressure-type thermostat. Its related structure and specific working principle have been recorded in the background technology of this patent. It is a prior art and there is no need to elaborate on it.

[0031] The pressure plate 51 is a disc-shaped structure as a whole. The push rod 6 and the positioning suction cup 61 form a group, which is four groups arranged in a circle. The positioning suction cup 61 is made of high-elastic plastic material, which is wear-resistant, durable and low-temperature resistant, and can be stably adsorbed and positioned with the surface of the refrigerator inner plate 2.

[0032] The refrigerator inner plate 2 is a common structure of refrigerators, and the thermostat body 1 can be installed on it by screws.

[0033] The thermostat body 1 is fixedly arranged at the right end of the refrigerator inner plate 2. The cross-section of the damping sleeve 3 is a T-shaped structure and is fixedly arranged in the through hole 21. The damping sleeve 3 with a T-shaped structure is firmly bonded to the through hole 21 by epoxy resin glue. The epoxy resin glue is resistant to low temperature and waterproof, which improves the bonding stability of the damping sleeve 3.

[0034] The temperature regulating shaft 31 is connected to the damping sleeve 3 in a damping sleeve manner. The damping sleeve 3 is made entirely of silica gel and has damping friction elasticity.

[0035] The column rotating cap 7 is a trapezoidal structure as a whole. The elastic gasket 71 is arranged on the right end surface of the column rotating cap 7. The temperature adjustment knob 4 is provided with an open groove 41. The open groove 41 is provided with an elastic layer 42. The elastic gasket 71 and the elastic layer 42 are both made of polyurethane material, which is resistant to low temperature, has high elasticity, and is wear-resistant and durable.

[0036] The positioning stud 5 is threadedly connected to the temperature adjustment knob 4, and there is a gap between the right end surface of the temperature adjustment knob 4 and the left end surface of the refrigerator inner plate 2 to avoid friction and collision with the refrigerator inner plate 2 when the temperature adjustment knob 4 is rotated.

[0037] The finger buckle groove 8 is an arc-shaped inner groove as a whole. There are two finger buckle grooves 8 symmetrical in the upper and lower parts. Two fingers of a single hand can be inserted into the finger buckle groove 8 at the same time and rotated, which is very convenient to operate.

[0038] The damping coating 81 is evenly coated along the inner groove wall of the finger buckle groove 8. The damping coating 81 is a silicone coating with a thickness of 80 to 90 microns, which is resistant to low temperatures and prevents the inserted fingers from slipping.

[0039] Working method: When the temperature control knob 4 is not rotated, two fingers of one hand can be inserted into the finger buckle groove 8 at the same time and rotated clockwise, driving the column rotating cap 7 and the positioning stud 5 to rotate clockwise as a whole, and through the threaded transmission effect between the temperature control knob 4, driving the positioning stud 5 to move to the right as a whole. When the four positioning suction cups 61 are stably adsorbed and positioned with the left end face of the refrigerator inner plate 2, stop rotating the column rotating cap 7. At this time, the elastic gasket 71 will be squeezed by the column rotating cap 7 and the left end face of the temperature control knob 4 at the same time. The squeezed elastic gasket 71 will generate a lateral rebound force, which acts on the positioning stud 5 to prevent it from rotating. At the same time, the damping sleeve 3 with a damping friction effect can further prevent the temperature control shaft 31 from rotating, thereby greatly improving the positioning performance of the temperature control knob 4 of the pressure-type thermostat for household appliances refrigerators.

[0040] Moreover, by providing a finger buckle groove 8 structure with a damping coating 81 on the column rotation cap 7, stable single-handed operation is achieved, thereby improving the convenience of rotating the column rotation cap 7 and the anti-slip property when inserting a finger.

[0041] In addition, when a finger is inserted into the opening groove 41 and the temperature adjustment knob 4 is rotated, the elastic layer 42 structure further improves the elastic comfort when the finger rotates the temperature adjustment knob 4.

[0042] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-temperature thermostat for household appliances, comprising a thermostat body (1), characterized in that: The thermostat body (1) is composed of a main housing (11) and a temperature adjustment knob (4); a capillary tube (12) and a temperature adjustment shaft (31) are provided on the main housing (11); the temperature adjustment shaft (31) and the temperature adjustment knob (4) are fixedly arranged; a probe (13) is provided on the capillary tube (12); a refrigerator inner plate (2) is provided on the left side of the thermostat body (1); a through hole (21) is provided on the refrigerator inner plate (2); a damping sleeve (3) is provided in the through hole (21); The temperature adjustment knob (4) is provided with a positioning stud (5), the positioning stud (5) is provided with a pressure plate (51) and a column rotation cap (7), the pressure plate (51) is provided with a push rod (6), and the push rod (6) is provided with a positioning suction cup (61); An elastic gasket (71) is provided on the column rotating cap (7), a finger buckle groove (8) is provided on the column rotating cap (7), and a damping coating (81) is provided in the finger buckle groove (8).

2. A low-temperature thermostat for household appliances according to claim 1, characterized in that: The pressure plate (51) is a disc-shaped structure as a whole, and the push rod (6) and the positioning suction cup (61) form a group, which is a total of four groups arranged in a circle.

3. A low-temperature thermostat for household appliances according to claim 1, characterized in that: The thermostat body (1) is fixedly arranged at the right end of the refrigerator inner plate (2); the damping sleeve (3) has a T-shaped cross-section and is fixedly arranged in the through hole (21); and the temperature adjustment shaft (31) is dampingly sleeved with the damping sleeve (3).

4. A low-temperature thermostat for household appliances according to claim 1, characterized in that: The column rotating cap (7) is a trapezoidal structure as a whole. The elastic gasket (71) is arranged on the right end surface of the column rotating cap (7). The temperature adjustment knob (4) is provided with an open groove (41), and an elastic layer (42) is provided in the open groove (41).

5. The low-temperature thermostat for household appliances according to claim 1, characterized in that: The positioning stud (5) is threadedly connected to the temperature adjustment knob (4), and there is a distance between the right end surface of the temperature adjustment knob (4) and the left end surface of the refrigerator inner plate (2).

6. A low-temperature thermostat for household appliances according to claim 1, characterized in that: The finger buckle groove (8) is an arc-shaped inner groove as a whole, and there are two finger buckle grooves (8) symmetrical in the upper and lower parts.

7. The low-temperature thermostat for household appliances according to claim 1, characterized in that: The damping coating (81) is evenly coated along the inner groove wall surface of the finger buckle groove (8), and the damping coating (81) is a silicone coating with a thickness of 80 to 90 microns.

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