Power connection structure and refrigeration equipment

Abstract

The utility model discloses a power connection structure and refrigeration equipment, and belongs to the technical field of electrical equipment, and the power connection structure comprises a plug, a connection part and a sheath wire. The connecting part is provided with a first end and a second end which are opposite; the second end is connected with the plug; a through hole penetrating through the first end and the second end is formed in the connecting part; the outer diameter of the first end is b, the outer diameter of the second end is c, and c is larger than b; the sheath wire penetrates through the through hole and is fixedly connected with the connecting part; the outer diameter of the sheath wire is the same as the diameter of the through hole, and the outer diameter of the sheath wire is a; the difference value between b and a is e1, and the difference value between c and b is e2; wherein the ratio of a to c is larger than 0.5, and the ratio of e2 to e1 is smaller than or equal to 0.26. According to the utility model, the connecting part has good flexibility, so that the risk that the sheath wire is damaged when the sheath wire is bent relative to the connecting part can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an electrical connection structure and a refrigeration device. Background Art

[0002] The power connection end of the electrical device is connected to the plug through a sheathed wire, and the plug is inserted into the socket so that the electrical device can be powered on. In some scenarios, the end of the sheathed wire connected to the plug will bend relative to the plug, and excessive bending of the sheathed wire can easily cause damage to the end of the sheathed wire connected to the plug. Therefore, an anti-bending block is generally provided at the end where the plug is connected to the sheathed wire, and the sheathed wire is passed through the anti-bending block. In the related art, the anti-bending block is roughly truncated cone-shaped, and the outer diameter of the anti-bending block gradually increases in the direction close to the plug. Since the outer diameters of the two ends of the anti-bending block vary greatly, the outer diameter of the end of the anti-bending block close to the plug is larger, which results in poor flexibility of the anti-bending block and a small bending radius. Therefore, when the curvature of the sheathed wire is large, the curvature of the anti-bending block is small, and the sheathed wire is bent too much relative to the anti-bending block, which can easily cause damage to the sheathed wire. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a power connection structure, the connection part of which can have good flexibility to reduce the risk of sheath line damage.

[0004] The utility model also provides a refrigeration device with the power connection structure.

[0005] According to the first aspect of the present invention, the power connection structure includes: a plug, a connecting part and a sheathed wire.

[0006] The connecting portion has a first end and a second end opposite to each other, and the second end is connected to the plug; the connecting portion is formed with a through hole penetrating the first end and the second end; the outer diameter of the first end is b, and the outer diameter of the second end is c, and c is greater than b;

[0007] The sheathed wire passes through the through hole and is fixedly connected to the connecting portion; the outer diameter of the sheathed wire is the same as the diameter of the through hole, and the outer diameter of the sheathed wire is a; the difference between b and a is e1, and the difference between c and b is e2;

[0008] The ratio of a to c is greater than 0.5, and the ratio of e2 to e1 is less than or equal to 0.26.

[0009] According to the power connection structure of the first aspect of the embodiment of the utility model, at least the following beneficial effects are achieved: since the ratio between e1 and e2 is less than or equal to 0.25, the ratio of the wall thickness of the first end to the difference between the outer diameters of the first end and the second end is small, that is, the change in the outer diameter from the first end to the second end of the connecting portion is relatively small, so that the wall thickness at the second end is relatively small, which is conducive to the sheath wire driving the portion of the connecting portion close to the second end to bend. At the same time, since the ratio of a to c is greater than 0.5, the outer diameter of the sheath wire is greater than the wall thickness of the second end, which is conducive to the sheath wire driving the portion of the connecting portion close to the second end to bend. Therefore, when the sheath wire is subjected to the same force position and force magnitude, the bending radius of the connecting portion of the utility model is relatively large, so that the angle between the connecting portion and the sheath wire is small, so that the connecting portion of the utility model has good flexibility, which can reduce the risk of the sheath wire being damaged when the sheath wire is bent relative to the connecting portion.

[0010] According to some embodiments of the present invention, the ratio between e2 and e1 is equal to 0.25.

[0011] According to some embodiments of the present invention, e1 is 3 mm to 5 mm.

[0012] According to some embodiments of the present invention, the ratio of a to c is 0.52 to 0.55.

[0013] According to some embodiments of the present invention, the ratio of a to b is 0.58 to 0.6.

[0014] According to some embodiments of the present invention, the distance from the first end to the second end is h, wherein h is greater than c.

[0015] According to some embodiments of the present invention, a groove is provided on the outer side of the connecting portion, and the groove extends along the circumference of the connecting portion.

[0016] The refrigeration device according to the second embodiment of the utility model includes the power connection structure of the first embodiment.

[0017] The refrigeration device according to the second embodiment of the utility model has at least the following beneficial effects: including all the beneficial effects of the power connection structure of the first embodiment, which will not be repeated here.

[0018] According to some embodiments of the present invention, the power of the refrigeration equipment is less than or equal to 50W.

[0019] According to some embodiments of the present invention, a is 5.6 mm to 6 mm, b is 9.6 mm to 10 mm, and c is 10.6 mm to 11 mm.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 A three-dimensional diagram of a power connection structure of an embodiment of the first aspect of the utility model;

[0023] Figure 2 It is a front view of the power connection structure of the first embodiment of the utility model;

[0024] Figure 3 for Figure 2 A cross-sectional view of the power connection structure in FIG.

[0025] Figure 4 A front view of a power connection structure of another embodiment;

[0026] Figure 5 It is a front view of a power connection structure of yet another embodiment.

[0027] Reference numerals:

[0028] Plug 100;

[0029] Connecting portion 200, first end 210, first single side 211, fillet 212, second end 220, second single side 221, groove 230, single side 240;

[0030] The sheathed wire 300 , the first section 310 , and the second section 320 . DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] Reference Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 A three-dimensional diagram of a power connection structure of an embodiment of the first aspect of the utility model; Figure 2 The power connection structure according to the first embodiment of the utility model comprises: a plug 100, a connecting portion 200 and a sheathed wire 300.

[0037] It is understandable that, referring to Figure 3 , the plug 100 is fixedly connected to the connecting part 200, and the connecting part 200 is provided with a through hole (not shown in the figure), one end of the through hole is connected to the inside of the plug 100, and one end of the through hole is connected to the outside. A through hole is penetrated at one end of the sheathed wire 300 so that the wire core inside the sheathed wire 300 can be connected to the metal plug of the plug 100, and the other end of the sheathed wire 300 can be used to connect to the electrical equipment. Therefore, after the plug 100 is inserted into the socket, the wire core inside the sheathed wire 300 can be energized to supply power to the electrical equipment. Regarding the connection method between the plug 100, the connecting part 200 and the sheathed wire 300, in this embodiment, the plug 100, the connecting part 200 and the sheathed wire 300 are integrally formed. In other embodiments, the connecting part 200 can also be bonded to the plug 100 and the sheathed wire 300 respectively.

[0038] It should be noted that in some cases, the position deviation between the socket and the electrical device is large or there is an obstacle between the plug 100 and the electrical device. Since the sheathed wire 300 is long and has a certain flexibility, the sheathed wire 300 can be bent to ensure that the electrical device is connected to the socket through the power connection structure of the utility model. When the bending radius of the sheathed wire 300 is large, the end of the sheathed wire 300 close to the plug 100 will bend relative to the plug 100. It should be understood that, referring to Figure 3 Since the sheathed wire 300 is inserted into the through hole of the connection part 200, and the outer diameter of the sheathed wire 300 is set to be the same as the diameter of the through hole, the outer wall of the sheathed wire 300 abuts against and is fixed to the inner wall of the through hole, so that the connection part 200 is wrapped around the outer peripheral side of the sheathed wire 300, and the outer wall of the sheathed wire 300 is connected to the outer wall of the plug 100 through the connection part 200, thereby enhancing the connection stability between the sheathed wire 300 and the plug 100, so as to reduce the risk of damage to the sheathed wire 300 when the sheathed wire 300 is bent relative to the plug 100. In addition, since the connection part 200 has a certain thickness, when the sheathed wire 300 is bent, the connection part 200 can hinder the bending of the sheathed wire 300 to a certain extent, thereby avoiding excessive bending of the sheathed wire 300, so as to reduce the risk of damage to the sheathed wire 300. It can also be explained that the connecting part 200 has a certain flexibility. When the sheath wire 300 is bent, it can drive the connecting part 200 to bend at a certain angle, thereby weakening the obstruction effect of the connecting part 200 to ensure the bending radius of the sheath wire 300 and avoid the sheath wire 300 from bending too much relative to the connecting part 200, resulting in too small an angle between the sheath wire 300 and the connecting part 200, so as to avoid excessive squeezing of the sheath wire 300 and the connecting part 200, resulting in damage to the connection position of the sheath wire 300 and the connecting part 200.

[0039] For example, the sheathed cable 300 includes a first section 310 and a second section 320, the second section 320 is located in the through hole and fixedly connected to the through hole, and the first section 310 protrudes from the through hole and is connected to the power supply device. When the sheathed cable 300 is bent, that is, when the first section 310 is bent under force, the first section 310 drives the second section 320 to bend, and the second section 320 is difficult to bend because it is wrapped by the connecting portion 200, so that the first section 310 is hindered by the second section 320 to limit the bending angle of the first section 310.

[0040] It should be noted that when the connecting portion 200 is bent along with the sheath wire 300, it will be bent relative to the plug 100. In order to ensure the connection stability between the connecting portion 200 and the plug 100, it is necessary to ensure the connection area between the connecting portion 200 and the plug 100. Figure 2The outer diameter of one end of the connecting part 200 connected to the plug 100 is set larger to ensure the connection stability between the connecting part 200 and the plug 100, while the outer diameter of one end of the connecting part 200 away from the plug 100 is set smaller to ensure the flexibility of the connecting part 200.

[0041] Specifically, refer to Figure 2 , the end of the connecting portion 200 connected to the plug 100 is defined as the second end 220, and the end of the connecting portion 200 opposite to the second end 220 is defined as the first end 210, that is, the end of the connecting portion 200 away from the plug 100 is the first end 210, wherein the outer diameter of the second end 220 is greater than the outer diameter of the first end 210, and the through hole of the connecting portion 200 passes through the first end 210 and the second end 220. In this embodiment, referring to Figure 2 In the direction from the first end 210 to the second end 220, the outer diameter of the connecting portion 200 increases gradually, thereby ensuring the flexibility of the connecting portion 200 while ensuring the connection stability between the connecting portion 200 and the plug 100. In some other embodiments, referring to Figure 5 , Figure 5 is a front view of a power connection structure of another embodiment. Figure 2 The power connection structure in the embodiment shown is different in that, in the direction from the first end 210 to the second end 220 , the outer diameter of the connection part 200 is first reduced and then increased, so that the outer peripheral side of the connection part 200 is concave.

[0042] In order to improve the flexibility of the sheath wire 300, the change amount of the outer diameter of the connecting portion 200 in the direction from the first end 210 to the second end 220 is set to be small. Figure 2 For example, the outer diameter of the first end 210 is set to b, the outer diameter of the second end 220 is set to c, and the outer diameter of the sheath wire 300 is set to a, that is, the diameter of the through hole is also a. Since the connecting portion 200 is formed with a through hole, Figure 3In the cross-sectional view of the power connection structure of the present invention, the power connection structure is cut along the length direction of the power connection structure, wherein the through hole separates the two sides of the connection part 200, so that the connection part 200 forms a single side 240 on both sides of the through hole, wherein the single side 240 portion corresponding to the first end 210 is defined as a first single side 211, and the single side 240 portion corresponding to the second end 220 is defined as a second single side 221. The sum of the wall thicknesses of the first single side 211 on both sides of the first end 210 is e1, and e1 is equal to the difference between b and a, and the difference in outer diameter between the first end 210 and the second end 220 is e2, and e2 is equal to the difference between c and b. The ratio of e2 to e1 is set to be less than or equal to 0.26, for example, 0.24, 0.25 or 0.26, so that the ratio of the difference between the outer diameters of the first end 210 and the second end 220 to the sum of the wall thicknesses of the first single sides 211 on both sides is smaller, that is, the change in the outer diameter from the first end 210 to the second end 220 is relatively small, so that the change in the wall thickness of the connecting part 200 is smaller, and the wall thickness of the second end 220 is smaller, which is beneficial for the sheath wire 300 to drive the part of the connecting part 200 close to the second end 220 to bend, so that the connecting part 200 has better flexibility.

[0043] For example, since the outer diameter variation from the first end 210 to the second end 220 of the connecting portion 200 is small, referring to Figure 3 When the second section 320 located in the through hole is subjected to the force of the first section 310, the resistance force from the connecting part 200 on the part of the second section 320 close to the first end 210 and the part close to the second end 220 is similar, so that the second section 320 can better drive the connecting part 200 to bend, thereby increasing the bending radius of the connecting part 200 and making the connecting part 200 more flexible.

[0044] At the same time, the ratio of a to c is set to be greater than 0.5, for example, 0.51, 0.52, 0.53, 0.54 or 0.55, so that the outer diameter of the sheath wire 300 is greater than the sum of the wall thicknesses of the second single sides 221 on both sides, thereby facilitating the sheath wire 300 to drive the portion of the connecting part 200 close to the second end 220 to bend.

[0045] For example, the diameter of the second section 320 is greater than the sum of the wall thicknesses of the second single sides 221 on both sides, and when the second section 320 is bent, the resistance force from the second end 220 is relatively small. If the ratio of a to c is less than 0.5, the wall thickness of the second end 220 is relatively large, which is not conducive to the sheathed wire 300 driving the portion of the connecting part 200 near the second end 220 to bend.

[0046] In summary, by making the ratio between a and c greater than 0.5, and the ratio between e2 and e1 less than or equal to 0.26, the sheathed wire 300 can better drive the portion of the connection part 200 close to the second end 220 to bend. For example, when the sheathed wire 300 is subjected to the same force position and force magnitude, the bending radius of the connection part 200 is relatively large, so that the angle between the connection part 200 and the sheathed wire 300 is small, thereby, the connection part 200 has good flexibility, and can reduce the risk of the sheathed wire 300 being damaged when the sheathed wire 300 is bent relative to the connection part 200.

[0047] In a specific application scenario of the utility model, the power supply equipment is a small car refrigerator or a bedroom wine cabinet, etc. The placement space of the power supply equipment is small, and the bending degree of the sheathed wire 300 is large. Therefore, the connection part 200 has good flexibility, which can reduce the risk of damage to the sheathed wire 300.

[0048] Furthermore, compared with the anti-bending block in the prior art, when the length, the outer diameter of the first end 210 and the outer diameter of the sheath wire 300 are the same, the connecting part 200 of the utility model uses less material during the production process, which can save a certain amount of production cost.

[0049] It should be noted that, in this embodiment, in order to avoid the first end 210 of the connection part 200 from feeling bad and causing scratches or scratches, it should be noted that the first end 210 of the connection part 200 has a rounded corner 212. It should be understood that the value of b is the maximum outer diameter of the rounded corner 212 of the first end 210. Figure 4 , Figure 4 2 is a front view of a power connection structure according to another embodiment, wherein the corner 212 of the connecting portion 200 is not chamfered. Therefore, in other embodiments, the corner 212 of the connecting portion 200 may not be chamfered.

[0050] In order to improve the flexibility of the connecting portion 200 while ensuring the connection stability between the connecting portion 200 and the plug 100, refer to Figure 2 , the ratio between e2 and e1 is equal to 0.25.

[0051] It can be understood that the difference between the outer diameters of the first end 210 and the second end 220 accounts for one quarter of the wall thickness of the first single side 211 on both sides, so that the first end 210 can have better flexibility while ensuring that the change in the outer diameter of the connecting part 200 from the first end 210 to the second end 220 is not too small, so as to ensure that there is a sufficient connection area between the second end 220 and the plug 100, thereby ensuring the connection stability between the second end 220 and the plug 100.

[0052] For example, if the ratio between e1 and e2 is small, such as when the ratio between e1 and e2 is 0.1, the change in the outer diameter from the first end 210 to the second end 220 is too small, which will result in a smaller connection area between the second end 220 and the plug 100. When the sheath wire 300 drives the connecting part 200 to bend at a larger angle, the bending degree of the connecting part 200 relative to the plug 100 will also be correspondingly larger. The second single side 221 on one side of the second end 220 will tilt toward the plug 100 and be squeezed with the plug 100, while the second single side 221 on the other side has a tendency to move away from the plug 100, and the second single side 221 on the other side will deform and extend to maintain the connection with the plug 100. If the connection area between the second end 220 and the plug 100 is too small, it will easily cause the second single side 221 on the other side to detach from the plug 100, thereby causing the connecting part 200 to separate from the plug 100.

[0053] In order to ensure the flexibility of the first end 210, e1 is set to 3 mm to 5 mm, for example, 3 mm, 4 mm or 5 mm. The value of e1 is set to be smaller to ensure that the sheathed wire 300 can easily drive the first end 210 to bend.

[0054] It can be understood that e1 is the difference between b and a, and the difference between b and a is the sum of the wall thicknesses of the first single side 211 on both sides. Figure 3 The wall thickness of the first single side 211 is set to n, and n is 1.5 mm to 2.5 mm. By setting the wall thickness of the first single side 211 to be smaller, the sheath wire 300 can easily drive the first end 210 of the connecting part 200 to bend, so as to further reduce the relative bending angle between the sheath wire 300 and the connecting part 200. And, according to the ratio of e2 to e1 being 0.25, it can be known that the wall thickness k of the second single side 221 is 1.875 mm to 3.125 mm.

[0055] For example, if the wall thickness of the first single side 211 is less than 1.5 mm, the wall thickness of the first single side 211 is too thin, so that the connection between the connecting portion 200 and the sheath wire 300 is unstable. When the sheath wire 300 drives the first end 210 to bend, the sheath wire 300 will approach one of the single sides 240 and squeeze the single side 240 on that side. If the wall thickness of the single side 240 is too thin, the sheath wire 300 is easy to crack the single side 240 on that side. At the same time, when the sheath wire 300 drives the first end 210 to bend, the sheath wire 300 will move away from the other single side 240, and the other single side 240 will deform and extend to maintain the connection with the sheath wire 300. If the wall thickness of the single side 240 is too thin, the ductility of the single side 240 is weak. When the sheath wire 300 is bent greatly, the other single side 240 is easy to separate from the sheath wire 300. For another example, if the wall thickness of the first single side 211 is greater than 2.5 mm, the wall thickness of the first single side 211 is too thick, which will cause the flexibility of the first end 210 to be weak, thereby making it difficult for the sheathed wire 300 to drive the first end 210 to bend.

[0056] Specifically, in this embodiment, e1 is set to 4 mm, thus, n is 2 mm. It should be understood that during the molding process of the connecting portion 200, there is a certain production tolerance, and the tolerance of the single side 240 of the connecting portion 200 is generally ±0.5 mm. Thus, the wall thickness of the first single side 211 is set to 2 mm, and the actual size of the first single side 211 can fall within 1.5 mm to 2.5 mm.

[0057] In order to balance the size of the sheathed wire 300 and the second end 220, the ratio of a to c is set to 0.52 to 0.55, so as to ensure that the sheathed wire 300 can facilitate driving the connecting portion 200 while ensuring the connection area between the second end 220 and the plug 100. For example, the ratio of a to c can be 0.52, 0.53, 0.54 or 0.55.

[0058] For example, if the ratio of a to c is higher than 0.55, when the diameter of the sheathed wire 300 is the same, the area between the second end 220 and the plug 100 is small, which will cause the second end 220 and the plug 100 to be unstable. If the ratio of a to c is lower than 0.52, the size of the sheathed wire 300 and the sum of the wall thickness of the second single side 221 on both sides are close. When the sheathed wire 300 bends and applies force to the second end 220, the bending radius of the second end 220 and the sheathed wire 300 are close, which easily causes the connection position between the second end 220 and the plug 100 to separate.

[0059] Therefore, the ratio of a to c is set to 0.52 to 0.55 to ensure the flexibility of the second end 220 and the portion of the connecting portion 200 close to the second end 220 , and to ensure the connection stability between the second end 220 and the plug 100 .

[0060] In order to balance the size of the sheathed wire 300 and the first end 210, the ratio of a to b is set to 0.58 to 0.6, so that the outer diameter of the sheathed wire 300 is slightly larger than the sum of the wall thicknesses of the first single sides 211 on both sides, so that the sheathed wire 300 can better drive the first end 210 to bend, and ensure the tightness of the connection between the sheathed wire 300 and the first end 210. For example, the ratio of a to b can be 0.58, 0.59 or 0.6, etc.

[0061] For example, if the ratio of a to b is lower than 0.58, that is, the outer diameter of the sheath wire 300 is smaller than the sum of the wall thickness of the first single sides 211 on both sides, or is equal to or close to the sum of the wall thickness of the first single sides 211 on both sides, the wall thickness of the first end 210 will be too large, and the first end 210 will have a greater resistance to the sheath wire 300, and the sheath wire 300 will not easily drive the first end 210 to bend, resulting in weak flexibility of the connection part 200. If the ratio of a to b is greater than 0.6, the outer diameter of the sheath wire 300 far exceeds the sum of the wall thickness of the first single sides 211 on both sides, and when the sheath wire 300 drives the connection part 200 to bend, the sheath wire 300 is easy to fracture the first single side 211.

[0062] Therefore, the ratio of a to b is set to 0.58 to ensure the flexibility of the first end 210 and the portion of the connecting portion 200 close to the first end 210 , and to ensure the connection stability between the first end 210 and the sheathed wire 300 .

[0063] In order to further improve the flexibility of the connecting portion 200, refer to Figure 2 , the connection part 200 is set longer, for example, the distance from the first end 210 to the second end 220 is h, where h is greater than c. It can be understood that the length of the connection part 200 will be greater than the outer diameter of the second end 220, so that the connection part 200 has a larger bending radius, thereby improving the flexibility of the connection part 200.

[0064] In order to further improve the flexibility of the connecting portion 200, refer to Figure 1 A groove 230 is provided on the outer side of the connecting portion 200 so that when the connecting portion 200 is bent, the groove 230 reduces the mutual squeezing inside the connecting portion 200, thereby allowing the connecting portion 200 to have a larger turning radius. In addition, when the connecting portion 200 is bent, the first end 210 and the second end 220 are close to each other to bend the axis of the connecting portion 200, thereby allowing the groove 230 to extend along the circumference of the connecting portion 200, thereby making the connecting portion 200 more flexible.

[0065] Specifically, in this embodiment, the groove 230 passes through the connection part 200 to communicate with the through hole, so that the outer wall of the sheath wire 300 leaks out through the groove 230, and the groove 230 includes a plurality of grooves distributed along the length direction of the connection part 200. In other embodiments, the groove 230 may not pass through the connection part 200.

[0066] The refrigeration device according to the second embodiment of the utility model includes the power connection structure of the first embodiment.

[0067] The refrigeration device according to the second embodiment of the utility model has at least the following beneficial effects: including all the beneficial effects of the power connection structure of the first embodiment, which will not be repeated here.

[0068] It is understandable that the refrigeration equipment is, for example, a freezer, a wine cabinet or a refrigerator.

[0069] Specifically, the power of the refrigeration equipment is less than or equal to 50W, so in this embodiment, a 3*0.5mm 2 The sheathed wire 300 has three wire cores inside, and the cross-sectional size of the wire core is 0.5 mm. 2 Compared with the sheathed wire model 3*0.75mm commonly used in the prior art 2 The sheathed wire 300 used in the utility model has a relatively low cost, so as to reduce the production cost.

[0070] Specifically, a is set to 5.6 mm to 6 mm, b is set to 9.6 mm to 10 mm, and c is set to 10.6 mm to 11 mm. For example, a is 5.6 mm, b is 9.6 mm, and c is 10.6 mm; a is 5.8 mm, b is 9.8 mm, and c is 10.8 mm; c is 6 mm; b is 10 mm, and c is 11 mm.

[0071] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. The power connection structure is characterized by: include: plug; A connecting portion, the connecting portion having a first end and a second end opposite to each other, the second end being connected to the plug; the connecting portion is formed with a through hole penetrating the first end and the second end; the outer diameter of the first end is b, the outer diameter of the second end is c, and c is greater than b; a sheathed wire, the sheathed wire passes through the through hole and is fixedly connected to the connecting portion; the outer diameter of the sheathed wire is the same as the diameter of the through hole, the outer diameter of the sheathed wire is a; the difference between b and a is e1, and the difference between c and b is e2; The ratio of a to c is greater than 0.5, and the ratio of e2 to e1 is less than or equal to 0.

26.

2. The power connection structure according to claim 1, characterized in that: The ratio between e2 and e1 is equal to 0.

25.

3. The power connection structure according to claim 2, characterized in that: e1 is 3mm to 5mm.

4. The power connection structure according to claim 1, characterized in that: The ratio of a to c is 0.52 to 0.

55.

5. The power connection structure according to claim 1, characterized in that: The ratio of a to b is 0.58 to 0.

6.

6. The power connection structure according to claim 1, characterized in that: The distance from the first end to the second end is h, where h is greater than c.

7. The power connection structure according to claim 1, characterized in that: A groove is provided on the outer side of the connecting portion, and the groove extends along the circumference of the connecting portion.

8. Refrigeration equipment, characterized in that The invention comprises a power connection structure as claimed in any one of claims 1 to 7.

9. The refrigeration device according to claim 8, characterized in that: The power of the refrigeration equipment is less than or equal to 50W.

10. The refrigeration device according to claim 9, characterized in that: a is 5.6mm to 6mm, b is 9.6mm to 10mm, and c is 10.6mm to 11mm.

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