Fixing structure and refrigerator

Abstract

The utility model belongs to the field of refrigerator technical equipment, and particularly relates to a fixing structure and a refrigerator. The fixing structure comprises a shell assembly, the shell assembly comprises two fixing face covers, the two fixing face covers cover each other to form a fixing cavity used for containing a first component and a second component, and the first component and the second component are arranged in the fixing cavity side by side; and the positioning assembly comprises two positioning convex ribs arranged on the inner wall of the fixing cavity in a protruding mode, one positioning convex rib extrudes the first component towards the second component, and the other positioning convex rib extrudes the first component towards the second component, so that the first component and the second component are attached to each other. According to the utility model, the two positioning ribs respectively extrude the temperature sensing head and the air inlet pipe, so that the size error between the temperature sensing head and the fixed chamber and the size error between the air inlet pipe and the fixed chamber can be overcome, and the contact reliability of the temperature sensing head and the air inlet pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to refrigerator technical equipment field, especially relate to a fixed knot and refrigerator. BACKGROUND

[0002] At present, the evaporator component is placed in the freezing chamber of the common refrigerator on the market, which provides guarantee for the refrigeration performance of the refrigerator. In order to detect the defrosting performance of the refrigerator, a defrosting sensor temperature sensing head is bound at the evaporator inlet pipe to detect the internal performance parameters of the refrigerator.

[0003] The evaporator inlet pipe and the defrosting sensor temperature sensing head need to be tightly attached together, and the temperature sensing head needs to maintain conduction with the outside world. Therefore, the common solution on the market is to first wrap aluminum foil tape around the evaporator inlet pipe and the temperature sensing head of the defrosting sensor, and then use a tie to tighten it from the outside. This fixing method can meet the various performance requirements of the refrigerator, but it requires multiple installation procedures, has low installation efficiency and is not aesthetically pleasing.

[0004] There are also fixing members for fixing the evaporator inlet pipe and the temperature sensing head of the defrosting sensor, but after fixing, the evaporator inlet pipe and the temperature sensing head of the defrosting sensor are prone to misalignment in the fixing member. In addition, due to the deformation error of the fixing member and the evaporator inlet pipe or the temperature sensing head of the defrosting sensor after installation, especially after long-term use, the evaporator inlet pipe and the temperature sensing head of the defrosting sensor cannot be in full contact and tightly attached, which leads to detection distortion. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a fixing structure, which aims to solve the problem of how to improve the fixing efficiency of the evaporator inlet pipe and the temperature sensing head of the defrosting sensor and improve the reliability of the fixing.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0007] In a first aspect, a fixing structure is provided for fixing a first component and a second component, the fixing structure comprising:

[0008] a housing assembly comprising two fixed surface covers, the two fixed surface covers being mutually covered to form a fixed chamber for accommodating the first component and the second component, the housing assembly being capable of allowing the first component and the second component to be arranged side by side in the fixed chamber; and

[0009] a positioning assembly comprising positioning ribs protruding from the inner wall of the fixed chamber, the positioning ribs being arranged in two, one of the positioning ribs pressing the first component towards the second component, and the other of the positioning ribs pressing the second component towards the first component, so that the first component and the second component are attached to each other.

[0010] In some embodiments, two positioning protrusions are arranged at intervals along the length direction of the first member, and / or two positioning protrusions are arranged at intervals along the length direction of the second member.

[0011] In some embodiments, the positioning protrusions are arranged on both of the fixing covers, and each of the positioning protrusions is located on the same side of the first member, and / or the positioning protrusions are arranged on both of the fixing covers, and each of the positioning protrusions is located on the same side of the second member.

[0012] In some embodiments, the first member and the second member are in a cylindrical shape, the pressing surface of the positioning protrusion is in a concave arc surface, and the positioning protrusion abuts against the first member or the second member through the pressing surface.

[0013] In some embodiments, the fixing chamber comprises a first positioning hole accommodating the first member and a second positioning hole arranged side by side with the first positioning hole and accommodating the second member in communication, and the hole wall of the first positioning hole and the hole wall of the second positioning hole are both convexly provided with the positioning protrusions.

[0014] In some embodiments, the first positioning hole comprises a first hole section, a second hole section and a third hole section in sequence in communication, the inner diameter of the first hole section and the inner diameter of the third hole section are both smaller than the inner diameter of the second hole section, and the positioning protrusion is shaped on the hole wall of the second hole section.

[0015] In some embodiments, one end of the two fixing covers is hinged, the other end of the two fixing covers is respectively provided with a first buckle part and a second buckle part, and the first buckle part buckles the second buckle part.

[0016] In some embodiments, the first buckle part comprises a resilient arm convexly provided on the edge of one of the fixing covers and a buckle head provided on the resilient arm, and the second buckle part is a buckle slot opened on the edge of the other fixing cover, and the buckle head buckles in the buckle slot.

[0017] In some embodiments, the fixing cover is provided with an avoiding hole, the avoiding hole is in communication with the fixing chamber, and the first member is partially exposed through the avoiding hole.

[0018] In a second aspect, a refrigerator is provided, which comprises the fixing structure, and further comprises an evaporator and a defrosting sensor, the first member is a temperature sensing head of the defrosting sensor, and the second member is an air inlet pipe of the evaporator.

[0019] The application has the beneficial effects that the fixing structure comprises two fixing covers and two positioning ribs, the temperature sensing head of the defrosting sensor and the air inlet pipe of the evaporator are placed in one fixing cover, the other fixing cover is covered on the fixing cover with the temperature sensing head and the air inlet pipe, the two fixing covers form a fixing chamber together, the temperature sensing head and the air inlet pipe can be kept stable through the fixing chamber, and the installation process is simple; the two positioning ribs are used to press the temperature sensing head and the air inlet pipe respectively, so that the size error between the temperature sensing head and the air inlet pipe and the fixing chamber can be overcome, and the reliability of the contact between the temperature sensing head and the air inlet pipe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0021] Figure 1 is a perspective structural schematic view of the fixing structure provided by the embodiment of the present application and two covers in a covering state;

[0022] Figure 2 is an assembly schematic view of the fixing structure and the temperature sensing head and the air inlet pipe provided by another embodiment of the present application;

[0023] Figure 3 is a sectional view of along the vertical air inlet pipe or temperature sensing head axial direction of Figure 2

[0024] Figure 4 is an assembly schematic view of the temperature sensing head, the air inlet pipe and one cover of Figure 2

[0025] Figure 5 is a structural schematic view of two covers of the fixing structure in an unfolded state of Figure 1

[0026] Figure 6 is a perspective structural schematic view from bottom to top of Figure 5

[0027] In the drawings, various reference signs represent:

[0028] ​​​​100, fixing structure; 10, fixing surface cover; 11, positioning chamber; 111, first positioning hole; 112, second positioning hole; 14, avoiding hole; 21, first buckle part; 22, second buckle part; 12, positioning convex rib; 101, temperature sensing head; 102, air inlet pipe; 103, raised part; 13, thinned surface; 15, hinged plate; 31, first hole section; 32, second hole section; 33, third hole section; 311, first stop wall; 331, second stop wall; 211, buckle head; 212, elastic arm; DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first", "second" are only for the purpose of convenient description, and cannot be understood as indicating or implying relative importance or implying the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0031] Referring to Figures 1 to 3 The embodiments of the present application provide a fixing structure 100 and a refrigerator having the same, and the fixing structure 100 is used for fixing a first member and a second member. In the present application, the first member is a temperature sensing head 101 of a defrosting sensor, and the second member is an air inlet pipe 102 of an evaporator. In other embodiments, the first member and the second member can be selected according to actual conditions, which are not limited herein. The fixing structure 100 is used for fixing the temperature sensing head 101 and the air inlet pipe 102, so that the defrosting sensor can measure the temperature of the air inlet pipe 102.

[0032] Referring to Figures 1 to 3 The fixing structure 100 includes a shell assembly and a positioning assembly connected to the shell assembly.

[0033] Referring to Figures 1 to 3The shell assembly comprises two fixed surface covers 10, which are substantially identical in shape and curved sheet shape, and are overlapped with each other to form a fixed chamber for accommodating the temperature sensing head 101 and the air inlet pipe 102, and the temperature sensing head 101 and the air inlet pipe 102 are arranged side by side in the fixed chamber. It can be understood that the material of the fixed surface cover 10 can be plastic, and the fixed surface cover 10 can be formed by injection molding process. The fixed chamber is partially located in one of the fixed surface covers 10, and the other part of the fixed chamber is located in the other fixed surface cover 10, that is, the inner surface of the fixed surface cover 10 is recessed, so that the fixed chamber can be formed by the two fixed surface covers 10. During use, the temperature sensing head 101 and the air inlet pipe 102 can be placed in one of the fixed surface covers 10, and then the other fixed surface cover 10 is overlapped, so as to fix the temperature sensing head 101 and the air inlet pipe 102.

[0034] Please refer to Figures 1 to 3 The positioning assembly comprises positioning ribs 12 protruding from the inner wall of the fixed chamber. The two positioning ribs 12 are arranged, one of which presses the temperature sensing head 101 towards the air inlet pipe 102, and the other of which presses the air inlet pipe 102 towards the temperature sensing head 101, so that the temperature sensing head 101 and the air inlet pipe 102 are closely attached to each other, and the temperature sensing head 101 can be in full contact with the air inlet pipe 102, so that the defrosting sensor can measure the temperature of the air inlet pipe 102.

[0035] Please refer to Figures 1 to 3 The fixing structure 100 provided by the embodiment of the present application comprises two fixed surface covers 10 and two positioning ribs. The temperature sensing head 101 of the defrosting sensor and the air inlet pipe 102 of the evaporator are placed in one of the fixed surface covers 10, and the other fixed surface cover 10 is overlapped with the fixed surface cover 10 in which the temperature sensing head 101 and the air inlet pipe 102 are placed, so that the two fixed surface covers 10 form a fixed chamber together. The fixed chamber can keep the temperature sensing head 101 and the air inlet pipe 102 stable, and the installation process is simple. Then the two positioning ribs press the temperature sensing head 101 and the air inlet pipe 102 respectively, so as to overcome the dimensional error between the temperature sensing head 101 and the air inlet pipe 102 and the fixed chamber, and improve the reliability of the contact between the temperature sensing head 101 and the air inlet pipe 102.

[0036] Please refer to Figures 1 to 3 It can be understood that at least one end of the two fixed surface covers 10 is detachably connected, the temperature sensing head 101 and the air inlet pipe 102 are placed between the two fixed surface covers 10, and then the two fixed surface covers 10 are overlapped. When disassembly is needed, the temperature sensing head 101 and the air inlet pipe 102 can be taken out by opening the two fixed surface covers 10, or the fixing structure 100 can be separated from the temperature sensing head 101 and the air inlet pipe 102.

[0037] Please refer to Figures 1 to 3In some embodiments, two positioning protrusions 12 are arranged along the length direction of the temperature sensing head 101.

[0038] Referring to Figures 1 to 3 In some embodiments, two positioning protrusions 12 are arranged along the length direction of the air inlet pipe 102.

[0039] Optionally, by arranging two positioning protrusions 12 along the length direction of the temperature sensing head 101 or the air inlet pipe 102, the extrusion effect is optimized, ensuring that the temperature sensing head 101 and the air inlet pipe 102 are uniformly stressed and in contact along the full length range in the length direction, avoiding local loosening.

[0040] It can be understood that three or more positioning protrusions 12 can be arranged along the length direction of the temperature sensing head 101 or the air inlet pipe 102, which is not limited here and can be selected according to actual conditions.

[0041] Arranging multiple positioning protrusions 12 along the length direction can avoid the risk of pressure concentration of a single positioning protrusion 12 on the temperature sensing head 101 or the air inlet pipe 102, and enhance the durability and shock resistance of the overall fixing structure 100.

[0042] Referring to Figures 1 to 3 In some embodiments, the two fixing surface covers 10 are each provided with a positioning protrusion 12, and each positioning protrusion 12 is located on the same side of the temperature sensing head 101, and the positioning protrusion 12 extruding the temperature sensing head 101 is located on the side of the temperature sensing head 101 away from the air inlet pipe 102, so that the two positioning protrusions 12 extrude the temperature sensing head 101 towards the air inlet pipe 102.

[0043] Referring to Figures 1 to 3 In some embodiments, the two fixing surface covers 10 are each provided with a positioning protrusion 12, and each positioning protrusion 12 is located on the same side of the air inlet pipe 102, and the positioning protrusion 12 extruding the air inlet pipe 102 is located on the side of the air inlet pipe 102 away from the temperature sensing head 101, so that the two positioning protrusions 12 extrude the air inlet pipe 102 towards the temperature sensing head 101.

[0044] Optionally, the positioning protrusions 12 are arranged on the two fixing surface covers 10, ensuring that the extrusion effect on the temperature sensing head 101 or the air inlet pipe 102 is uniformly distributed, and improving the contact effect between the temperature sensing head 101 and the air inlet pipe 102.

[0045] Referring to Figures 1 to 3Optionally, any one of the fixed surface cover 10 is arranged with two positioning protrusions 12 along the length direction of the temperature sensing head 101, and any one of the fixed surface cover 10 is arranged with two positioning protrusions 12 along the length direction of the air inlet pipe 102. The multiple positioning protrusions 12 cooperatively apply extrusion force, thereby improving the fitting strength between the temperature sensing head 101 and the air inlet pipe 102, and avoiding loosening or sliding of the temperature sensing head 101 and the air inlet pipe 102 during long-term use. That is, any one of the fixed surface cover 10 is provided with four positioning protrusions 12, and the positioning protrusions 12 on the two fixed surface covers 10 correspond to each other and jointly act, thereby avoiding left-right misalignment of the temperature sensing head 101 and the air inlet pipe 102 after the two fixed surface covers 10 are covered, and thus better clamping the air inlet pipe 102 and the temperature sensing head 101.

[0046] Referring to Figures 1 to 3 In some embodiments, the temperature sensing head 101 and the air inlet pipe 102 are in a cylindrical shape, and the extrusion surface of the positioning protrusion 12 is in a concave arc surface, and the positioning protrusion 12 abuts against the temperature sensing head 101 or the air inlet pipe 102 through the extrusion surface.

[0047] Optionally, the extrusion surface of the positioning protrusion 12 is in a concave arc surface, which perfectly fits the outer shape of the cylindrical temperature sensing head 101 and air inlet pipe 102 component, increases the contact area, and provides greater extrusion force and stability.

[0048] Through the concave arc surface, the extrusion force on the temperature sensing head 101 or the air inlet pipe 102 can be dispersed, and the uniformity of the stress can be improved.

[0049] Referring to Figures 1 to 3 In some embodiments, the fixed chamber includes a first positioning hole 111 accommodating the temperature sensing head 101 and a second positioning hole 112 arranged side by side with the first positioning hole 111 and communicating with and accommodating the air inlet pipe 102, and the hole wall of the first positioning hole 111 and the hole wall of the second positioning hole 112 are both provided with positioning protrusions 12.

[0050] Optionally, the temperature sensing head 101 and the air inlet pipe 102 are respectively accommodated by the first positioning hole 111 and the second positioning hole 112, and the temperature sensing head 101 and the air inlet pipe 102 are in close contact with each other at the communication part of the first positioning hole 111 and the second positioning hole 112, thereby ensuring that the temperature sensing head 101 and the air inlet pipe 102 remain in a relatively independent and stable fixed state in the fixed chamber.

[0051] Referring to Figures 1 to 3 Optionally, the positioning protrusions 12 provided on the hole wall of the first positioning hole 111 and the hole wall of the second positioning hole 112 can respectively apply extrusion force to the temperature sensing head 101 and the air inlet pipe 102, and increase the fixing strength, thereby preventing the temperature sensing head 101 and the air inlet pipe 102 from sliding or rotating left and right in the fixed chamber.

[0052] Referring to Figures 4 to 6Optionally, the extruding surface of the positioning protrusion 12 is a concave arc surface with a diameter of 7 mm, the length of the positioning protrusion 12 along the axial direction of the temperature sensing head 101 or the air inlet pipe 102 is 2 mm, and the thickness of the positioning protrusion 12 is 1.5 mm. Therefore, after the temperature sensing head 101 and the air inlet pipe 102 are respectively placed in the first positioning hole 111 and the second positioning hole 112, the positioning protrusion 12 and the temperature sensing head 101 and the positioning protrusion 12 and the air inlet pipe 102 are all in interference fit, so that the situation of not being fixed tightly due to the deformation error of the fixing surface cover 10 can be prevented.

[0053] Please refer to Figures 4 to 6 In some embodiments, the first positioning hole 111 includes a first hole section 31, a second hole section 32 and a third hole section 33 which are sequentially communicated, the inner diameter of the first hole section 31 and the inner diameter of the third hole section 33 are both smaller than the inner diameter of the second hole section 32, so that the first hole section 31 and the third hole section 33 form a first stop wall 311 and a second stop wall 331 at two ends of the second hole section 32 respectively, and the positioning protrusion 12 is located on the hole wall of the second hole section 32.

[0054] Optionally, the cross-sectional shape of the first hole section 31, the second hole section 32 and the third hole section 33 can all be circular, wherein the diameter of the first hole section 31 can be 5.5 mm, the diameter of the second hole section 32 can be 8.5 mm, and the diameter of the third hole section 33 can be 4.5 mm. The temperature sensing head 101 is provided with a raised portion 103, the diameter of the raised portion 103 is 8 mm, and the raised portion 103 is located in the second hole section 32, so that the two ends of the raised portion 103 are limited by the first stop wall 311 and the second stop wall 331 respectively, and the temperature sensing head 101 is prevented from sliding out of the first positioning hole 111.

[0055] Please refer to Figures 4 to 6 It can also be understood that the diameter of the raised portion 103 is smaller than the diameter of the second hole section 32, so that the hole wall of the second hole section 32 is arranged away from the side surface of the raised portion 103, thereby facilitating the positioning protrusion 12 located in the second hole section 32 to directly abut and extrude the raised portion 103, and improving the locking effect on the temperature sensing head 101.

[0056] Optionally, the diameter of the second positioning hole 112 is also 8.5 mm, the diameter of the air inlet pipe 102 is 8 mm, and the hole wall of the second positioning hole 112 is arranged away from the side surface of the air inlet pipe 102, thereby facilitating the positioning protrusion 12 located in the second positioning hole 112 to directly abut and extrude the side surface of the air inlet pipe 102, and improving the locking effect on the air inlet pipe 102.

[0057] Please refer to Figures 5 to 6 In some embodiments, one end of the two fixing surface covers 10 is hinged, the other end of the two fixing surface covers 10 is respectively provided with a first buckle portion 21 and a second buckle portion 22, and the first buckle portion 21 buckles the second buckle portion 22.

[0058] As shown in Figures 4 to 6 Optionally, the hinge plate 15 is flexible and can be bent, the thickness of the hinge plate 15 is 0.3mm and the width is 1.4mm, the two sides of the hinge plate 15 are connected to the two fixed surface covers 10 respectively, and the position of the fixed surface cover 10 connected to the hinge plate 15 is provided with the thinning surface 13 which is inclined to the plane determined by the hinge plate 15 by an angle of 30 degrees, and the two thinning surfaces 13 are beneficial to the rotation and closing of the two fixed surface covers 10, and improve the convenience of use.

[0059] As shown in Figures 3 to 5 In some embodiments, the first buckle part 21 includes the elastic arm 212 protruding from the edge of one of the fixed surface covers 10 and the buckle head 211 arranged on the elastic arm 212, and the second buckle part 22 is the buckle groove arranged on the edge of the other fixed surface cover 10, and the buckle head 211 is buckled in the buckle groove.

[0060] As shown in Figures 3 to 5 Optionally, the buckling amount L1 of the buckle head 211 and the edge of the buckle groove is 1mm, the elastic arm 212 is located in the buckle groove, the minimum distance L2 of the elastic arm 212 to the groove wall of the buckle groove is 1mm, and the minimum distance L3 of the connection position of the elastic arm 212 and the fixed surface cover 10 to the groove wall of the buckle groove is 0.8mm, so that the elastic arm 212 can be prevented from returning and causing the buckle head 211 to be separated from the edge of the buckle groove, and the reliability of the buckling of the first buckle part 21 and the second buckle part 22 is improved.

[0061] Optionally, two first buckle parts 21 are arranged at intervals, the two first buckle parts 21 are buckled with two second buckle parts 22 respectively, and the two first buckle parts 21 are located on the same side edge of the same fixed surface cover 10.

[0062] As shown in Figures 3 to 5 In some embodiments, the fixed surface cover 10 is provided with the avoiding hole 14, the avoiding hole 14 is communicated with the fixed chamber, and the temperature sensing head 101 is partially exposed through the avoiding hole 14.

[0063] As shown in ​ Optionally, the two fixed surface covers 10 are provided with the avoiding hole 14 respectively, the two sides of the temperature sensing head 101 are exposed through the two avoiding holes 14 respectively, and the temperature sensing head 101 has a larger contact area with the outside through the avoiding hole 14, so that the sensitivity of the temperature sensing head 101 can be enhanced, and the reliability of the detection of the defrosting sensor can be improved.

[0064] The utility model discloses still put forward a kind of refrigerator, the refrigerator includes fixed structure 100, the specific structure of fixed structure 100 refers to above-mentioned embodiment, since the refrigerator has adopted all technical solutions of above-mentioned all embodiments, thus also have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer one by one elaboration.

[0065] In some embodiments, the refrigerator further comprises an evaporator and a defrosting sensor, the evaporator has an air inlet pipe 102, and the defrosting sensor has a temperature sensing head 101.

[0066] The above is only optional embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of claims of the present application.

Claims

1. A fixing structure for fixing a first member and a second member, characterized by, The fixing structure comprises: a housing assembly comprising two fixing covers which are overlapped with each other to form a fixing chamber for accommodating the first component and the second component, and the housing assembly is capable of allowing the first component and the second component to be arranged side by side in the fixing chamber; and a positioning assembly comprising positioning protrusions which are protruded from the inner wall of the fixing chamber, and the positioning protrusions are arranged in two, one of which is arranged to press the first component towards the second component, and the other of which is arranged to press the second component towards the first component, so as to make the first component and the second component adhere to each other.

2. The fixing structure according to claim 1, wherein: The two positioning protrusions are arranged along the length direction of the first component, and / or the two positioning protrusions are arranged along the length direction of the second component.

3. The fixing structure according to claim 1, wherein: The two fixing covers are both provided with the positioning protrusions, and each of the positioning protrusions is located on the same side of the first component, and / or the two fixing covers are both provided with the positioning protrusions, and each of the positioning protrusions is located on the same side of the second component.

4. The fixture of any one of claims 1-3, wherein: The first component and the second component are in a cylindrical shape, the pressing surface of the positioning protrusion is in a concave arc surface, and the positioning protrusion is arranged to abut against the first component or the second component through the pressing surface.

5. The fixture of any one of claims 1-3, wherein: The fixing chamber comprises a first positioning hole for accommodating the first component and a second positioning hole which is arranged side by side with the first positioning hole and is in communication with the first positioning hole and accommodates the second component, and the hole wall of the first positioning hole and the hole wall of the second positioning hole are both provided with the positioning protrusions.

6. The fixing structure according to claim 5, wherein: The first positioning hole comprises a first hole section, a second hole section and a third hole section which are in sequence in communication, the inner diameter of the first hole section and the inner diameter of the third hole section are both smaller than the inner diameter of the second hole section, and the positioning protrusion is formed on the hole wall of the second hole section.

7. The fixture of any one of claims 1-3, wherein: One end of the two fixing covers is hinged, and the other end of the two fixing covers is respectively provided with a first buckle part and a second buckle part, and the first buckle part is buckled with the second buckle part.

8. The fixing structure according to claim 7, wherein: The first buckle part comprises a resilient arm which is protruded from the edge of one of the fixing covers and a buckle head which is arranged on the resilient arm, and the second buckle part is a buckle groove which is arranged on the edge of the other fixing cover, and the buckle head is buckled in the buckle groove.

9. The fixture of any one of claims 1-3, wherein: The fixing cover is provided with an avoiding hole which is in communication with the fixing chamber and through which the first component is partially exposed.

10. A refrigerator characterized by comprising: The refrigerator comprises the fixing structure according to any one of claims 1-9, and further comprises an evaporator and a defrosting sensor, the first component is a temperature sensing head of the defrosting sensor, and the second component is an air inlet pipe of the evaporator.

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