Connecting device for lighting power supply of electrical appliances, connecting assembly and refrigerator

Abstract

The present disclosure discloses a connection device, a connection assembly, and a refrigerator for a lighting power supply for an electrical appliance. The connection assembly for the lighting power supply for an electrical appliance includes a first connection device and a second connection device, the first connection device including: a first base plate mounted on the inner wall of the electrical appliance, at least one pair of elastic terminals disposed on the first base plate, and a spring switch disposed on the first base plate, wherein when the spring switch is closed, the at least one pair of elastic terminals is electrically connected to an external power supply for supplying power to the lighting power supply. The disclosed connection device disposed on the inner wall of the electrical appliance and the connection device disposed on the shelf can achieve electrical connection between the electrical appliance and the shelf, so that the lighting light source mounted on the shelf is turned on. The solution of the present disclosure is simple, reliable, low-cost, and can achieve the purpose of illuminating the interior of the electrical appliance using the lighting light source on the shelf.

Description

Technical Field

[0001] The present disclosure relates to device lighting technology, and more particularly to a connection device, a connection assembly, and a refrigerator for a lighting power supply of an electrical appliance. Background Art

[0002] Currently, refrigerators and similar devices on the market all use internal top-lit systems for internal illumination. For example, when food is piled high in a refrigerator, it can easily block the light, impacting the overall lighting effect. To improve user satisfaction, a better internal lighting solution is urgently needed.

[0003] In some electrical appliances, some lighting sources are mounted on movable components, such as the lights mounted on the movable shelf of a refrigerator. In the prior art, this requires an electrical connector on the movable shelf and a mating connector on the circuit board. When the movable shelf is inserted into the refrigerator, the lights on the movable shelf make electrical contact with the mating connector on the circuit board, thereby supplying power to the lights. However, the need for the electrical connector on the movable shelf in the prior art makes it susceptible to damage during insertion and removal, which can lead to electrical connection failure. Summary of the Invention

[0004] An object of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0005] In response to the above problems, a first aspect of the present disclosure provides a first connection device for a lighting power supply of an electrical appliance, comprising:

[0006] a first base plate configured to be mounted on an inner wall of the appliance;

[0007] at least one pair of elastic terminals, which are arranged on the first bottom plate; and

[0008] A dome switch is provided on the first base plate and is configured to enable the at least one pair of elastic terminals to be electrically connected to an external power source that supplies power to the lighting power source when the dome switch is closed.

[0009] According to an exemplary embodiment of the present invention, the first connecting device further comprises:

[0010] A first shell is configured to be mounted on the first base plate to accommodate the at least one pair of elastic terminals and the dome switch, wherein the first shell includes at least one pair of through holes, which are configured to allow the at least one pair of elastic terminals to extend through the first shell and protrude outward when the first shell is mounted on the first base plate.

[0011] According to an exemplary embodiment of the present invention, the first connecting device further comprises:

[0012] A sealing unit is provided on the first housing and enables the at least one pair of elastic terminals to extend through the sealing unit and protrude outward.

[0013] According to an exemplary embodiment of the present invention, the elastic terminal is a spring pin.

[0014] A second aspect of the present disclosure provides a second connecting device for use with the first connecting device described in the first aspect, comprising:

[0015] a second housing configured to be mounted on a shelf of the appliance;

[0016] at least one pair of metal contacts disposed in the second housing and electrically connected to the light source of the shelf, and configured to contact and mate with the at least one pair of elastic terminals when the shelf is installed in the appliance; and

[0017] The magnet unit is disposed in the second housing and is configured to generate a magnetic field to close the spring switch when the shelf is installed in the appliance, so that the lighting power supply is electrically connected to the external power supply.

[0018] According to an exemplary embodiment of the present invention, a surface of the second housing that contacts and mates with the first housing has an inclined portion, and the pair of metal contacts are located on the inclined portion.

[0019] According to an exemplary embodiment of the present invention, the angle relationship between the inclined portion and the surface of the first housing in contact therewith is as follows:

[0020]

[0021] Wherein, θ is the included angle, B is the length of the elastic terminal protruding outward from the sealing unit, and L is the length of the inclined surface.

[0022] A third aspect of the present disclosure provides a connection assembly for a lighting power supply of an electrical appliance, comprising:

[0023] A first connecting device comprising:

[0024] a first bottom plate configured to be mounted on an inner wall of the refrigerator,

[0025] At least one pair of elastic terminals, which are arranged on the first bottom plate, and

[0026] a first base plate, which is configured to be mounted on an inner wall of the appliance,

[0027] at least one pair of elastic terminals, which are provided on the first bottom plate and can be electrically connected to the lighting power supply through the first bottom plate; and

[0028] The second connecting device comprises:

[0029] a second housing configured to be mounted on a removable shelf of the appliance,

[0030] At least one pair of metal contacts is disposed in the second housing and is electrically connected to the lighting power supply of the refrigerator, and is configured to contact and mate with the at least one pair of elastic terminals when the shelf is installed in the refrigerator.

[0031] According to an exemplary embodiment of the present invention, the elastic terminal is a spring pin.

[0032] According to an exemplary embodiment of the present invention, the connection assembly further comprises:

[0033] a dome switch, which is disposed on the first bottom plate; and

[0034] The magnet unit is disposed in the second housing and is configured to generate a magnetic field to close the spring switch when the shelf is installed in the appliance, so that the lighting source is electrically connected to the external power source.

[0035] According to an exemplary embodiment of the present invention, the first connecting device further comprises:

[0036] A first shell is configured to be mounted on the first base plate to accommodate the at least one pair of elastic terminals and the dome switch, wherein the first shell includes at least one pair of through holes, which are configured to allow the at least one pair of elastic terminals to extend through the first shell and protrude outward when the first shell is mounted on the first base plate.

[0037] According to an exemplary embodiment of the present invention, the first connecting device further includes a sealing unit provided on the first housing and enabling the at least one pair of elastic terminals to extend through the sealing unit and protrude outward.

[0038] According to an exemplary embodiment of the present invention, the surface of the second shell that contacts and cooperates with the first shell has an inclined portion, and the at least one pair of metal contacts is located on the inclined portion. When the shelf is installed in the electrical appliance, the at least one pair of elastic terminals can slide on the inclined portion and eventually form electrical contact with the at least one pair of metal contacts.

[0039] According to an exemplary embodiment of the present invention, the angle relationship between the inclined portion and the surface of the first housing in contact therewith is as follows:

[0040]

[0041] Wherein, θ is the included angle, B is the length of the elastic terminal protruding outward from the sealing unit, and L is the length of the inclined surface.

[0042] A fourth aspect of the present disclosure provides a refrigerator, comprising at least:

[0043] A first connection device for a lighting power supply of a refrigerator, comprising:

[0044] a first bottom plate configured to be mounted on an inner wall of the refrigerator,

[0045] At least one pair of elastic terminals, which are arranged on the first bottom plate, and

[0046] a spring switch disposed on the first bottom plate and configured to electrically connect the at least one pair of elastic terminals to an external power source that supplies power to the lighting of the refrigerator when the spring switch is closed;

[0047] an illumination light source disposed on a shelf of the refrigerator; and

[0048] A second connection device for a lighting power supply of a refrigerator, comprising:

[0049] a second housing configured to be mounted on the shelf,

[0050] at least one pair of metal contacts disposed in the second housing and electrically connected to the lighting source on the shelf, and configured to contact and mate with the at least one pair of elastic terminals when the shelf is installed in the refrigerator, and

[0051] A magnet unit is disposed in the second shell and is configured to generate a magnetic field to close the spring switch when the shelf is installed in the refrigerator, so that the lighting power supply of the refrigerator is electrically connected to the external power supply to turn on the lighting light source.

[0052] According to an exemplary embodiment of the present invention, the first connecting device further comprises:

[0053] A first shell is configured to be mounted on the first base plate to accommodate the at least one pair of elastic terminals and the dome switch, wherein the first shell includes at least one pair of through holes, which are configured to allow the at least one pair of elastic terminals to extend through the first shell and protrude outward when the first shell is mounted on the first base plate.

[0054] According to an exemplary embodiment of the present invention, the first connecting device further includes a sealing unit provided on the first housing and enabling the at least one pair of elastic terminals to extend through the sealing unit and protrude outward.

[0055] According to an exemplary embodiment of the present invention, the surface of the second shell that contacts and cooperates with the first shell has an inclined portion, and the at least one pair of metal contacts is located on the inclined portion. When the shelf is installed in the refrigerator, the at least one pair of elastic terminals can slide on the inclined portion and eventually form electrical contact with the at least one pair of metal contacts.

[0056] According to an exemplary embodiment of the present invention, the angle relationship between the inclined portion and the surface of the first housing in contact therewith is as follows:

[0057]

[0058] Wherein, θ is the included angle, B is the length of the elastic terminal protruding outward from the sealing unit, and L is the length of the inclined surface.

[0059] In the aforementioned exemplary embodiments of the present invention, compared to existing refrigerator lighting methods, light sources (e.g., LED lights) can be installed on multiple shelves of the refrigerator. Only when a shelf contacts the inner side wall or inner rear wall of the refrigerator can the lighting power source installed on that shelf be turned on, allowing the lighting source to operate normally. This present invention can improve the user's experience of refrigerator lighting during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The features, advantages and other aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings, in which several embodiments of the present disclosure are shown in an illustrative and non-limiting manner. In the accompanying drawings:

[0061] Figure 1 A schematic diagram of the interior of a refrigerator according to the invention;

[0062] Figure 2 An exploded schematic diagram of a connection device for a lighting power supply for an electrical appliance provided on the inner wall of a refrigerator according to the invention;

[0063] Figure 3A schematic diagram of a connection device for a lighting power supply for an electrical appliance provided on a rear wall of a shelf according to the invention;

[0064] Figure 4 Schematic diagram of a first connection state of a connecting device for a lighting power supply of an electrical appliance according to the invention;

[0065] Figure 5 A schematic diagram of a connection device for a lighting power supply for an electrical appliance provided on a side wall of a shelf according to the invention; and

[0066] Figure 6 Schematic diagram of a second connection state of the connecting device for a lighting power supply of an electrical appliance according to the invention. DETAILED DESCRIPTION

[0067] The technical solution of the present invention will be further described in detail below through examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as limiting the present invention.

[0068] As used herein, the terms "including," "comprising," and similar terms should be understood as open-ended terms, i.e., "including but not limited to," indicating that other contents may also be included. The term "based on" means "based, at least in part, on." The term "one embodiment" means "at least one embodiment," and the term "another embodiment" means "at least one additional embodiment," and so on.

[0069] The present invention mainly focuses on the following technical problem: how to change the lighting mode inside an electrical appliance.

[0070] In order to solve the above problems, according to one general concept of the present invention, a connection assembly for a lighting power supply of an electrical appliance, which is arranged on the inner wall of the electrical appliance, is provided, which includes a first connection device and a second connection device. The first connection device includes a first base plate mounted on the inner wall of the electrical appliance, at least one pair of elastic terminals arranged on the first base plate, and a spring switch arranged on the first base plate, wherein when the spring switch is closed, the at least one pair of elastic terminals is electrically connected to an external power supply for supplying power to the lighting power supply. The second connection device includes a second shell mounted on the shelf of the electrical appliance, at least one pair of metal contacts arranged in the second shell, and a magnet unit arranged in the second shell. When the shelf is installed in the electrical appliance, a magnetic field is generated to close the spring switch, so that the lighting power supply is electrically connected to the external power supply, so that the lighting light source operates normally.

[0071] Example 1

[0072] like Figure 1As shown, a lighting source (e.g., LED light or LED light strip) is provided on one or more shelves 2 of the refrigerator 1. The connection assembly for the lighting power supply of an electrical appliance disclosed in the present invention includes two connection devices, wherein the first connection device is provided on the inner wall of the refrigerator 1 and the second connection device is provided on the corresponding shelf 2. Figure 1 As shown, the first connecting device can be arranged on the inner rear wall of the refrigerator 1, and correspondingly, the second connecting device is arranged on the rear wall of the shelf 2 (as shown in FIG. Figure 1 In the position A) shown, when the shelf 2 is fully pushed into the refrigerator 1, the first connecting device is connected to the second connecting device, and the lighting power supply is connected. Figure 1 As shown, the first connecting device can also be arranged on the inner side wall of the refrigerator 1, and correspondingly, the second connecting device is arranged on the side wall of the shelf 2 (such as Figure 1 In the position B) shown, when the shelf 2 is pushed into the refrigerator 1, the first connecting device is in contact with the second connecting device and connected to the lighting power supply.

[0073] In this embodiment, if Figure 2-Figure 4 As shown, a case where the first connecting device 100 is provided on the inner rear wall of the refrigerator 1 and the second connecting device 200 is provided on the rear wall of the shelf 2 will be described in detail.

[0074] like Figure 2 The first connecting device shown is arranged on the inner rear wall of the refrigerator and includes: a first base plate 110, at least one pair of elastic terminals 120 and a spring switch 130; wherein, the first base plate 110 is arranged on the inner wall of the refrigerator; at least one pair of elastic terminals 120 is arranged on the first base plate 110; the spring switch 130 is arranged on the first base plate 110 and forms a loop with the at least one pair of elastic terminals 120 and an external power supply.

[0075] In this embodiment, the dome switch 130 is provided to prevent the user from accidentally touching the first connection device (eg, at least one pair of elastic terminals 120 of the first connection device 100 ) and causing dangerous situations such as electric shock.

[0076] In addition, if Figure 2 As shown, the first connection device 100 further includes: a first housing 140 and a sealing unit 150. In this embodiment, the first housing 140 is configured to match the first base plate 110, so that at least one pair of elastic terminals 120 and the dome switch 130 are disposed within the first housing 140, and the at least one pair of elastic terminals 120 can extend through the first housing 140 and protrude outward. The sealing unit 150 is disposed on the first housing 140 and enables the at least one pair of elastic terminals 120 to extend through the sealing unit 150 and protrude outward.

[0077] In this embodiment, the elastic terminal may be a spring pin.

[0078] In this embodiment, the sealing unit 150 may be made of silica gel or similar materials, which can make the first connecting device 100 waterproof and dustproof, thereby extending the service life of the first connecting device.

[0079] like Figure 3 The second connecting device 200 shown is arranged on the rear wall of the shelf of the refrigerator, and includes: a second shell 210, at least one pair of metal contacts 220 and a magnet unit 230; wherein, the second shell 210 is arranged on the shelf; at least one pair of metal contacts 220 is embedded in the second shell 210, and is symmetrically arranged with at least one pair of elastic terminals 120 of the above-mentioned first connecting device 100, so that in the process of the shelf 2 being embedded in the refrigerator 1, at least one pair of metal contacts 220 contacts and cooperates with at least one pair of elastic terminals 120; the magnet unit 230 is embedded in the second shell 210, so that after the shelf 2 is embedded in the refrigerator 1, the magnet unit 230 is close to the spring switch 130 of the first connecting device 100.

[0080] The specific working principles of the first connecting device and the second connecting device disclosed in this embodiment are as follows:

[0081] like Figure 4 As shown, after the shelf is pushed into the refrigerator, the second connecting device 200 provided on the shelf's rear wall contacts and mates with the first connecting device 100 provided on the refrigerator's inner rear wall. Simultaneously, at least one pair of metal contacts 220 of the second connecting device 200 contacts and mates with at least one pair of elastic terminals 120 of the first connecting device 100. Furthermore, the magnet unit 230 of the second connecting device 200 approaches the spring switch 130 of the first connecting device 100, closing the spring switch 130. With the metal contacts 220 in contact and mating with the corresponding elastic terminals 120 and the spring switch 130 closed, the lighting power supply is turned on, allowing the lighting source provided on the shelf to function normally.

[0082] The technical solution disclosed in this embodiment enables the first connecting device and the second connecting device to achieve "face-to-face" mating connection, thereby ensuring that the lighting source provided on the shelf can function properly only when the shelf is properly installed in the refrigerator. The technical solution disclosed in this embodiment reduces the possibility of misoperation and provides users with a novel lighting method, avoiding the inconvenience caused by existing top lighting in the device.

[0083] Example 2

[0084] In this embodiment, if Figure 5 、 Figure 6 As shown, the first connecting device 100 is arranged in Figure 1 The inner wall of the refrigerator 1, and the second connecting device 200 is provided Figure 1The side wall of shelf 2 is in the case.

[0085] In this embodiment, the first connecting device 100 has the same structure and principle as the first connecting device 100 in Embodiment 1, and will not be described in detail herein.

[0086] like Figure 5 As shown, in this embodiment, the second connecting device 200 is disposed on the side wall of the refrigerator shelf and includes: a second housing 210, at least one pair of metal contacts 220, and a magnet unit 230. The second housing 210 is disposed on the shelf; the at least one pair of metal contacts 220 is embedded within the second housing 210 and symmetrically arranged with the at least one pair of elastic terminals 120 of the first connecting device 100, such that when the shelf is inserted into the refrigerator, the at least one pair of metal contacts 220 contacts and the at least one pair of elastic terminals 120. The magnet unit 230 is embedded within the second housing 210 so that when the shelf is inserted into the refrigerator, the magnet unit 230 is close to the spring switch 130 of the first connecting device 100. Furthermore, the surface of the second housing 210 that contacts the first housing 140 has an inclined portion, and the pair of metal contacts 220 are located on this inclined portion.

[0087] In this embodiment, the angle between the inclined portion and the surface of the first housing in contact therewith is as follows:

[0088]

[0089] Wherein, θ is the angle, B is the length of the elastic terminal protruding outward from the sealing unit, and L is the length of the inclined surface.

[0090] The specific working principles of the first connecting device and the second connecting device disclosed in this embodiment are as follows:

[0091] like Figure 6 As shown, after the shelf is pushed into the refrigerator, the second connecting device 200 provided on the shelf side wall contacts and mates with the first connecting device 100 provided on the inner wall of the refrigerator. Simultaneously, at least one pair of metal contacts 220 of the second connecting device 200 contacts and mates with at least one pair of elastic terminals 120 of the first connecting device. Furthermore, the magnet unit 230 of the second connecting device 200 approaches the spring switch 130 of the first connecting device 100, closing the spring switch 130. With the metal contacts 220 in contact and mating with the corresponding elastic terminals 120 and the spring switch 130 closed, the lighting power supply is turned on, allowing the lighting source provided on the shelf to function normally.

[0092] The technical solution disclosed in this embodiment enables the first connecting device and the second connecting device to achieve a side sliding connection, thereby ensuring that the lighting source provided on the shelf can function normally when the shelf is installed in the refrigerator. The technical solution disclosed in this embodiment enables the lighting source to be provided on the shelf to illuminate the interior of the refrigerator, providing users with a novel lighting method that avoids the inconvenience caused by the top lighting in existing equipment. At the same time, it ensures that the lighting power supply is stably connected after the shelf is installed in the refrigerator, thereby providing users with stable lighting needs.

[0093] Technologies, methods, and devices known to persons of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, they should be considered part of the specification. The lines connecting the elements in the drawings are for ease of explanation only, indicating that at least the elements at both ends of the line are in communication with each other, and are not intended to limit communication between unconnected elements.

[0094] The above are only optional embodiments of the present disclosure and are not intended to limit the embodiments of the present disclosure. For those skilled in the art, the embodiments of the present disclosure may be modified and varied in various ways. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure shall be included in the scope of protection of the embodiments of the present disclosure.

[0095] Although the embodiments of the present disclosure have been described with reference to several specific embodiments, it should be understood that the embodiments of the present disclosure are not limited to the specific embodiments disclosed. The embodiments of the present disclosure are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the appended claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. A first connection device for a lighting power supply of an electrical appliance, the first connection device being configured to be disposed on an inner wall of the electrical appliance, the inner wall including an inner rear wall or an inner side wall, the first connection device comprising: a first base plate configured to be mounted on the inner wall of the appliance; at least one pair of elastic terminals, which are arranged on the first bottom plate and at least partially exposed to the outside, and the elastic terminals are spring pins; as well as A spring switch is provided on the first base plate and is configured to electrically connect the at least one pair of elastic terminals to an external power source that supplies power to the lighting power source when the spring switch is switched from normally open to closed.

2. The first connecting device according to claim 1, characterized in that The first connecting device further comprises: A first shell is configured to be mounted on the first base plate to accommodate the at least one pair of elastic terminals and the dome switch, wherein the first shell includes at least one pair of through holes, which are configured to allow the at least one pair of elastic terminals to extend through the first shell and protrude outward when the first shell is mounted on the first base plate.

3. The first connecting device according to claim 2, characterized in that The first connecting device further comprises: A sealing unit is provided on the first housing and enables the at least one pair of elastic terminals to extend through the sealing unit and protrude outward.

4. A second connecting device for use with the first connecting device according to claim 1, wherein the second connecting device is configured to be disposed on a shelf of the appliance, comprising: a second housing configured to be mounted on the shelf of the appliance; at least one pair of metal contacts disposed in the second housing and electrically connected to the light source of the shelf, and configured to contact and mate with the at least one pair of elastic terminals at least partially exposed when the shelf is installed in the appliance; as well as A magnet unit is disposed in the second shell and is configured to generate a magnetic field to close the normally open spring switch when the shelf is installed in the appliance, so that the at least one pair of elastic terminals, the lighting power supply, and the external power supply are electrically connected.

5. The second connecting device according to claim 4, characterized in that: The surface of the second housing that contacts and mates with the first housing has an inclined portion, and the pair of metal contacts are located on the inclined portion.

6. The second connecting device according to claim 5, characterized in that: The angle relationship between the inclined portion and the surface of the first shell in contact with it is as follows: Wherein, θ is the included angle, B is the length of the elastic terminal protruding outward from the sealing unit, and L is the length of the inclined surface.

7. A connection assembly for a lighting power supply of an electrical appliance, comprising: A first connecting device, configured to be arranged on an inner wall of the appliance, wherein the inner wall includes an inner rear wall or an inner side wall, and comprises: a first base plate, which is configured to be mounted on an inner wall of the appliance, at least one pair of elastic terminals, which are arranged on the first bottom plate and at least partially exposed to the outside, and the elastic terminals are spring pins; a spring switch disposed on the first base plate and configured to electrically connect the at least one pair of elastic terminals to an external power source that supplies power to the lighting power supply when the spring switch is switched from normally open to closed; and A second connection device, the second connection device being configured to be disposed on a detachable shelf of the appliance, comprising: a second housing configured to be mounted on the removable shelf of the appliance, at least one pair of metal contacts, which are provided on the second housing and are electrically connected to the lighting source on the shelf, and are configured to contact and mate with the at least one pair of elastic terminals when the shelf is installed in the appliance; A magnet unit is disposed in the second housing and is configured to generate a magnetic field to close the spring switch when the shelf is installed in the appliance, so that the lighting source is electrically connected to the external power source.

8. The connection assembly according to claim 7, characterized in that The first connecting device further comprises: A first shell is configured to be mounted on the first base plate to accommodate the at least one pair of elastic terminals and the dome switch, wherein the first shell includes at least one pair of through holes, which are configured to allow the at least one pair of elastic terminals to extend through the first shell and protrude outward when the first shell is mounted on the first base plate.

9. The connection assembly according to claim 8, characterized in that The first connecting device further comprises: A sealing unit is provided on the first housing and enables the at least one pair of elastic terminals to extend through the sealing unit and protrude outward.

10. The connection assembly according to claim 8, characterized in that The surface of the second shell that contacts and cooperates with the first shell has an inclined portion, and the at least one pair of metal contacts is located on the inclined portion. When the shelf is installed in the electrical appliance, the at least one pair of elastic terminals can slide on the inclined portion and eventually form electrical contact with the at least one pair of metal contacts.

11. The connection assembly according to claim 10, characterized in that The angle relationship between the inclined portion and the surface of the first shell in contact with it is as follows: Wherein, θ is the included angle, B is the length of the elastic terminal protruding outward from the sealing unit, and L is the length of the inclined surface.

12. A refrigerator comprising at least: A first connection device for a lighting power supply of a refrigerator, wherein the first connection device is configured to be arranged on an inner wall of the appliance, wherein the inner wall includes an inner rear wall or an inner side wall, and comprises: a first bottom plate configured to be mounted on an inner wall of the refrigerator, at least one pair of elastic terminals, which are arranged on the first bottom plate and at least partially exposed to the outside, the elastic terminals being spring pins, and a spring switch disposed on the first bottom plate and configured to electrically connect the at least one pair of elastic terminals to an external power source that supplies lighting power to the refrigerator when the spring switch is switched from normally open to closed; an illumination light source disposed on a shelf of the refrigerator; and A second connection device for a lighting power supply of a refrigerator, the second connection device being configured to be arranged on a shelf of the appliance, comprising: a second housing configured to be mounted on the shelf, at least one pair of metal contacts disposed in the second housing and electrically connected to the lighting source on the shelf, and configured to contact and mate with the at least one pair of elastic terminals when the shelf is installed in the refrigerator, and A magnet unit is disposed in the second shell and is configured to generate a magnetic field to close the spring switch when the shelf is installed in the refrigerator, so that the lighting power supply of the refrigerator is electrically connected to the external power supply to turn on the lighting light source.

13. The refrigerator according to claim 12, wherein: The first connecting device further comprises: A first shell is configured to be mounted on the first base plate to accommodate the at least one pair of elastic terminals and the dome switch, wherein the first shell includes at least one pair of through holes, which are configured to allow the at least one pair of elastic terminals to extend through the first shell and protrude outward when the first shell is mounted on the first base plate.

14. The refrigerator according to claim 13, wherein: The first connecting device further comprises: A sealing unit is provided on the first housing and enables the at least one pair of elastic terminals to extend through the sealing unit and protrude outward.

15. The refrigerator according to claim 13, wherein The surface of the second shell that contacts and cooperates with the first shell has an inclined portion, and the at least one pair of metal contacts is located on the inclined portion. When the shelf is installed in the refrigerator, the at least one pair of elastic terminals can slide on the inclined portion and eventually form electrical contact with the at least one pair of metal contacts.

16. The refrigerator according to claim 15, characterized in that The angle relationship between the inclined portion and the surface of the first shell in contact with it is as follows: Wherein, θ is the included angle, B is the length of the elastic terminal protruding outward from the sealing unit, and L is the length of the inclined surface.

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