Marine refrigeration unit socket
By installing a switch knob mechanism on the marine refrigerated container socket, the circuit can be automatically controlled to switch on and off when the plug is inserted or removed, thus solving the safety hazard of traditional sockets being energized when not in use and improving safety.
Patent Information
- Application Number
- CN202521726739.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-14
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-14
AI Technical Summary
Traditional marine refrigerator sockets remain energized even when not in use, posing a safety hazard.
A marine refrigerated container socket with a switch knob mechanism was designed. The switch knob is automatically controlled to open and close the circuit by inserting and removing the plug.
Ensuring that sockets are unplugged when not in use improves safety and reduces the risk of potential electrical accidents.
Smart Images

Figure CN224683573U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electrical equipment, and in particular relates to a marine refrigerated box socket. Background Technology
[0002] Marine refrigerated container sockets are power outlet devices specifically designed for use with refrigerated containers on ships. Traditional marine refrigerated container sockets lack protective mechanisms; the socket remains energized regardless of whether the plug is connected. However, due to the humid environment on board, the socket remaining energized even when not in use poses a significant safety hazard. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a marine refrigerator socket with a switch knob mechanism.
[0004] To solve the above problems, the technical solution adopted by this utility model includes: a socket housing, a connector at the front end of the socket housing, a rubber core inside the connector, a plug-in cavity formed between the rubber core and the connector, a switch knob mechanism on the socket housing, the switch knob mechanism including a knob cap, a pusher and a return spring, the side wall of the knob cap having gear teeth, the rear end of the pusher having straight teeth that mesh with the gear teeth, and at least one push rod at the front end, guide rods on both sides of the pusher corresponding to the straight teeth, the return spring being sleeved on the guide rods, the front end of the push rod extending into the plug-in cavity of the socket housing and slidingly engaging with the socket housing, and the end of the guide rod being slidably connected to a bracket at the rear end of the socket housing.
[0005] The pusher is provided with a support plate, the support plate has a closed groove, the straight tooth is provided on one side of the groove, the guide rod is provided on both sides of the support plate, and the push rod is provided at the front end of the support plate.
[0006] There are two push rods, which are respectively located at the front end of the support plate.
[0007] The socket housing has a rotary switch at the rear end, and the operating lever of the rotary switch is connected to the rotary cap.
[0008] A set of circumferentially arranged reinforcing positioning ribs is provided at the connection between the guide rod and the support plate.
[0009] The bracket has guide rail grooves on both sides of the bottom and hooks on both sides of the front end. The rear end of the socket housing has a guide rail that mates with the guide rail grooves and a hanging groove that connects with the hooks.
[0010] The advantages of this utility model of marine refrigerated container socket are as follows: By setting a switch knob mechanism and a rotary switch on the shell of the marine refrigerated container socket, when the plug is inserted into the socket, the switch knob mechanism will drive the rotary switch to close, so as to realize the circuit conduction; when the plug is pulled out of the socket, the switch knob mechanism will drive the rotary switch to open, so as to realize the circuit disconnection.
[0011] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description
[0012] Figure 1 This is a structural schematic diagram of the marine refrigerated box socket of this utility model; Figure 2 This is a schematic diagram of the connector structure of this utility model; Figure 3 This is a schematic diagram of the switch knob mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the bracket of this utility model; Figure 5 This is a structural schematic diagram of the socket housing of this utility model; Figure 6 This is a schematic diagram of the structure of the plug of this utility model. Detailed Implementation
[0013] Reference Figure 1-6 As shown, the marine refrigerated container socket of this utility model includes a socket housing 1, with a connector 2 at the front end of the socket housing 1. A rubber core 3 is provided inside the connector 2, and a insertion cavity 4 is formed between the rubber core 3 and the connector 2. The connector 2 and the rubber core 3 are typically integrally formed with the socket housing 1. A switch knob mechanism 5 is provided on the socket housing 1, which includes a knob cap 6, a pusher 7, and a return spring 8. The knob cap 6 has teeth 9 on its sidewall, and the pusher 7 has straight teeth 10 at its rear end that mesh with the teeth 9. At least one push rod 11 is provided at the front end of the pusher 7, and guide rods 12 are provided on both sides of the pusher 7 corresponding to the straight teeth 10. The return spring 8 is sleeved on the guide rods 12. The front end of the push rod 11 extends into the insertion cavity 4 of the socket housing 1 and slides with the socket housing 1. The end of the guide rod 12 is slidably connected to a bracket 21 at the rear end of the socket housing 1. When the tip of the plug 22 is inserted into the insertion cavity 4 of the socket housing 1, it applies pressure to the push rod 11, causing the pusher 7 to retract. This, in turn, with the cooperation of the spur gear 10 and the gear 9, drives the rotary cap 6 to rotate, ultimately controlling the closing of the rotary switch mounted on the socket housing 1. When the plug 22 is pulled out, the pusher 7 returns to its original position under the reset action of the return spring 8, thereby opening the rotary switch.
[0014] Preferably, the pushing member 7 is provided with a support plate 13, the support plate 13 has a closed groove 14, the straight tooth 10 is provided on one side of the groove 14, the guide rod 12 is provided on both sides of the support plate 13, and the push rod 11 is provided at the front end of the support plate 13. There are two push rods 11, which are correspondingly provided at the front end of the support plate 13. With the above structure, the pushing member 7 has high overall strength and good pushing stability.
[0015] Preferably, a rotary switch 15 is provided at the rear end of the socket housing 1, and the operating lever of the rotary switch 15 is connected to the rotary cap 6. The rotary switch 15 is a switch structure that controls the on / off state by rotating its operating lever, such as a rotary circuit breaker, etc., which is well-known technology and will not be described in detail here. During wiring: connect the external power cord to the input terminal of the rotary switch 15, and connect the terminals inside the rubber core 3 to the output terminal of the rotary switch 15.
[0016] Preferably, a set of circumferentially arranged reinforcing positioning ribs 16 are provided at the connection between the guide rod 12 and the support plate 13. This is to improve the strength of the guide rod 1 and to position the guide rod 12 after it is inserted into place.
[0017] Preferably, the bracket 21 has guide rail grooves 17 on both sides of its bottom, and hooks 18 on both sides of its front end. The rear end of the socket housing 1 has a guide rail 19 that mates with the guide rail grooves 17 and a hanging groove 20 that connects to the hooks 18. During assembly, the bracket 21 can be inserted from the rear end of the socket housing 1, making installation more convenient.
[0018] The above description is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A marine refrigerated container socket, comprising a socket housing (1), wherein a connector (2) is provided at the front end of the socket housing (1), a rubber core (3) is provided inside the connector (2), and a insertion cavity (4) is formed between the rubber core (3) and the connector (2), characterized in that: The socket housing (1) is provided with a switch knob mechanism (5). The switch knob mechanism (5) includes a knob cap (6), a pusher (7) and a return spring (8). The side wall of the knob cap (6) is provided with gear teeth (9). The rear end of the pusher (7) is provided with straight teeth (10) that mesh with the gear teeth (9), and the front end is provided with at least one push rod (11). The pusher (7) is provided with guide rods (12) on both sides corresponding to the straight teeth (10). The return spring (8) is sleeved on the guide rods (12). The front end of the push rod (11) extends into the insertion cavity (4) of the socket housing (1) and slides with the socket housing (1). The end of the guide rod (12) is slidably connected to the bracket (21) at the rear end of the socket housing (1).
2. The marine refrigerator socket according to claim 1, characterized in that: The pusher (7) is provided with a support plate (13), the support plate (13) is provided with a closed slide groove (14), the straight tooth (10) is provided on one side of the slide groove (14), the guide rod (12) is provided on both sides of the support plate (13), and the push rod (11) is provided at the front end of the support plate (13).
3. The marine refrigerator socket according to claim 2, characterized in that: There are two push rods (11), and they are respectively set at the front end of the support plate (13).
4. The marine refrigerator socket according to claim 2, characterized in that: The socket housing (1) has a rotary switch (15) at the rear end, and the operating lever of the rotary switch (15) is connected to the rotary cap (6).
5. The marine refrigerator socket according to claim 2, characterized in that: A set of circumferentially arranged reinforcing positioning ribs (16) are provided at the connection between the guide rod (12) and the support plate (13).
6. The marine refrigerator socket according to claim 1, characterized in that: The bracket (21) has guide rail grooves (17) on both sides of the bottom and hooks (18) on both sides of the front end. The socket housing (1) has a guide rail (19) that cooperates with the guide rail groove (17) and a hanging groove (20) that connects to the hooks (18) at the rear end.