CN109838961B

CN109838961B - Walk line mechanism and have this refrigerator of walking line mechanism

Info

Publication number: CN109838961B
Application number: CN201910111422.9A
Authority: CN
Inventors: 位冬; 张健; 王宁; 吴光瑞
Original assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-02-12
Filing date: 2019-02-12
Publication date: 2020-08-28
Anticipated expiration: 2039-02-12
Also published as: CN109838961A

Abstract

The invention provides a wiring mechanism and a refrigerator, wherein a chamber with a forward opening is formed in a refrigerator body of the refrigerator, a drawer type door body can move in the front-back direction to open or close the chamber, and an electric component is arranged on the drawer type door body; the wiring mechanism comprises a cable for supplying power to the electrical component and a drag chain for accommodating part of the cable, one end of the drag chain is fixed inside the compartment, the wiring mechanism further comprises a support frame fixed on the rear side of the drawer type door body and a fixing box fixed on the support frame, a first inserting port is formed in the fixing box, and the other end of the drag chain is inserted into the first inserting port. The wiring mechanism effectively avoids deformation and damage of cables through the drag chain, guarantees stable electric connection between the drawer type door body and the compartment, and the fixing box provided with the first inserting port is fixedly installed on the supporting frame, so that inserting installation of the drag chain is achieved, assembly is more convenient, and work is reliable.

Description

Walk line mechanism and have this refrigerator of walking line mechanism

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a wiring mechanism and a refrigerator with the wiring mechanism.

Background

Nowadays, domestic and foreign markets all put forward higher and higher demands to aspects such as the volume of refrigerator product, outward appearance and simple operation, and more refrigerator is through setting up touch-control display screen or other electrical components on the door body to promote the outward appearance of refrigerator and realize corresponding function. The existing pivoting door body is provided with a corresponding cable on a hinge shaft so as to realize power transmission on the door body; in the case of the drawer-type door, a cable that moves along with the sliding movement of the drawer-type door needs to be provided to supply power to the electrical components. Because the corresponding clearance between the drawer box and the inner wall of the box body is small, the cable is easy to be wound and abraded with other parts, and even breaks and fails.

In order to solve the above problems, in the industry, a scheme has been disclosed in which a link assembly is provided between a refrigerator body and a drawer-type door body of a refrigerator, and a cable is connected to the door body from the side of the refrigerator body along the corresponding link assembly, but the cable is subjected to a large stress at a bending deformation position of the link assembly itself, and the link assembly itself is also subject to wear failure when repeatedly operated, thereby affecting the operation experience of the drawer-type door body. In the industry, a cable routing mechanism is also disclosed, in which a fixing frame and a supporting frame are respectively disposed on the inner wall of the box body and the rear side of the drawer-type door body, a guide hole is formed in the fixing frame, and a cable extends from between the fixing frame and the inner wall to the room through the guide hole, and then passes through a cable box fixed on the supporting frame to extend toward the drawer-type door body. The cable routing mechanism still cannot form effective limiting constraint on the movable part of the cable, and the cable still possibly interferes with the sliding rail or other parts, so that the cable is extruded and abraded to influence the work of electric parts on the drawer type door body.

In view of the above, it is desirable to provide a new wiring mechanism and a refrigerator having the same.

Disclosure of Invention

The invention aims to provide a wiring mechanism and a refrigerator with the same, which can better avoid cable damage, and have attractive structure and reliable work.

In order to achieve the above object, the present invention provides a wiring mechanism for electrically connecting a drawer-type door to a box, wherein the box is formed with a chamber that is opened forward, the drawer-type door can move in a front-back direction to open or close the chamber, and the drawer-type door is provided with an electrical component; the wiring mechanism comprises a cable for supplying power to the electrical component and a drag chain for accommodating part of the cable, and one end of the drag chain is used for being fixed in the compartment; the wiring mechanism further comprises a support frame fixed on the rear side of the drawer type door body and a fixing box fixed on the support frame, a first inserting opening is formed in the fixing box, and the other end of the drag chain is inserted into the first inserting opening.

As a further improvement of the present invention, the first insertion port is formed at a rear end of the set box.

As a further improvement of the present invention, the fixing box has a top wall, a bottom wall, a connecting wall connecting the top wall and the bottom wall, and a holding wall opposite to the connecting wall, wherein one side of the holding wall is fixedly connected to the top wall or the bottom wall, and the other side of the holding wall is separated from the bottom wall or the top wall.

As a further improvement of the invention, the drag chain comprises a plurality of chain links which are connected in sequence, each chain link is provided with two clamping plates which are oppositely arranged at the left and the right, and two ends of each clamping plate are respectively provided with a connecting hole and a connecting column.

As a further improvement of the present invention, the first insertion port is formed between the connecting wall and the holding wall, a set of insertion bosses are formed on one sides of the connecting wall and the holding wall facing the first insertion port, the insertion bosses are oppositely arranged, and insertion holes matched with the connecting columns are formed on the insertion bosses.

As a further improvement of the present invention, the insertion bosses are further formed with guide surfaces extending rearward, the guide surfaces formed on the group of insertion bosses are arranged oppositely, and the distance between the guide surfaces is gradually increased from front to back.

As a further improvement of the present invention, a set of oppositely disposed insertion posts is formed on one side of the connecting wall and the holding wall facing the first insertion opening, and the insertion posts are matched with the connecting holes to realize the mutual connection of the corresponding chain link and the fixing box.

As a further improvement of the invention, one end of the top wall or the bottom wall adjacent to the first interface is also protruded to form a limiting bulge.

As a further improvement of the invention, the fixing box is made of elastic insulating material.

The invention also provides a refrigerator, which comprises a refrigerator body and a drawer type door body, wherein the refrigerator body is provided with a chamber which is opened forwards, the drawer type door body can move along the front and back direction to open or close the chamber, and the drawer type door body is provided with an electric component; the refrigerator also comprises the wiring mechanism.

The invention also provides a wiring mechanism, which comprises a group of slide rail components arranged oppositely left and right, wherein each slide rail component is provided with a fixed rail and a movable rail capable of moving back and forth relative to the fixed rail; the wiring mechanism further comprises a support frame fixed with the movable rail and a fixing box fixed on the support frame, a first inserting port is formed in the fixing box, and the other end of the drag chain is inserted into the first inserting port.

The invention also provides a refrigerator which comprises a refrigerator body, a drawer type door body and the wiring mechanism, wherein the refrigerator body is provided with a chamber which is opened forwards, the drawer type door body can move in the front-back direction to open or close the chamber, the chamber is provided with two side walls which are oppositely arranged at the left side and the right side, and the drawer type door body is provided with an electric component; the fixed rail is fixed on the side wall, and the movable rail is connected to the drawer type door body, so that the drag chain moves back and forth along with the drawer type door body.

The invention has the beneficial effects that: by adopting the wiring mechanism and the refrigerator, the cables are effectively protected by the tow chains with two ends respectively connected in the compartment and the drawer type door body, and the cables are prevented from stretching to the position between the drawer box and the side wall and being extruded and deformed; and the drag chain can also control the bending degree of the cable, avoid stress damage caused by excessive bending deformation, prolong the service life of the cable and ensure the normal work of electrical parts on the drawer type door body. And a fixed box provided with a first socket is fixedly installed on the support frame so as to realize the socket installation of the drag chain, the assembly is more convenient, and the structural design is more beautiful.

Drawings

FIG. 1 is an overall schematic view of a refrigerator according to the present invention;

FIG. 2 is a schematic structural diagram of a routing mechanism according to the present invention;

FIG. 3 is a schematic structural view of the routing mechanism of FIG. 2 at another angle;

FIG. 4 is an exploded view of a portion of the routing mechanism of the present invention;

FIG. 5 is a schematic structural diagram of a supporting frame of the routing mechanism of the present invention;

FIG. 6 is a schematic view of a link of a drag chain of the routing mechanism of the present invention;

FIG. 7 is a schematic structural diagram of a fixing box of the routing mechanism of the present invention;

FIG. 8 is a schematic view of the mounting box of FIG. 7 at another angle;

fig. 9 is a schematic structural diagram of a mounting box of the routing mechanism of the present invention.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiment, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the embodiment are included in the scope of the present invention.

Referring to fig. 1, a refrigerator 100 according to the present invention includes a refrigerator body 10 and a drawer-type door 20 disposed at a front side of the refrigerator body 10, wherein the refrigerator body 10 is formed with a compartment 11 opened forward; the drawer-type door body 20 is movable in a front-rear direction to open or close the compartment 11.

The compartment 11 has two side walls 111 disposed opposite to each other in the left and right directions; the drawer-type door 20 is provided with an electrical component, which may be a touch display screen 21. A drawer box 30 for storing articles is further disposed at the rear side of the drawer door 20, the drawer box 30 moves along with the drawer door 20, and the drawer box 30 is preferably detachably disposed, that is, after the drawer door 20 is opened, the drawer box 30 can be taken out separately.

Referring to fig. 2 and fig. 3, the refrigerator 100 further includes a routing mechanism 40 for electrically connecting the drawer-type door 20 and the refrigerator body 10. The routing mechanism 40 includes a fixing frame 41 installed in the compartment 11, a supporting frame 42 fixed at the rear side of the drawer-type door 20, and a sliding rail assembly 43 disposed between the supporting frame 42 and the fixing frame 41, in other words, the routing mechanism 40 is further configured to achieve the front and back movement of the drawer-type door 20 and the drawer box 30 relative to the compartment 11. The fixed frames 41 are oppositely arranged in a group at the left and right and are respectively fixedly arranged on the two side walls 111 of the compartment 11; the supporting frames 42 are also arranged in a group and are slidably connected with the fixed frame 41 through corresponding sliding rail assemblies 43, and the supporting frames 42 are used for bearing the drawer box 30; the slide rail assembly 43 includes a fixed rail fixed on the sidewall 111 and a movable rail capable of moving back and forth relative to the fixed rail.

Referring to fig. 4, the slide rail assembly 43 is preferably configured as a three-level slide rail, and the slide rail assembly 43 includes a first slide rail 431 fixed to one side of the fixed frame 41 facing the interior of the compartment 11, a second slide rail 432 in sliding fit with the first slide rail 431, and a third slide rail 433 in sliding fit with the second slide rail 432 and fixed to the supporting frame 42. Here, the first slide rail 431 is the aforementioned fixed rail; the third slide rail 433 is the aforementioned movable rail.

The routing mechanism 40 further includes a cable 44 for supplying power to the touch display screen 21 and a drag chain 45 for accommodating a portion of the cable 44. A first connector 441 and a second connector 442 are respectively connected to both ends of the cable 44, the first connector 441 is configured to be mated with a box-side electrical connector (not shown) in the compartment 11, and the second connector 442 is configured to be mated with a door-side electrical connector (not shown) connected to the electrical component. One end of the drag chain 45 is fixed inside the compartment 11, and the other end of the drag chain 45 is connected to the drawer-type door 20 and moves back and forth together with the drawer-type door 20, and the other end of the drag chain 45 is connected to the support bracket 42. In actual production, the drag chain 45 can be directly fixed at a predetermined position of the support frame 42 by screws or the like, or a fixing structure matched with the end of the drag chain 45 is formed on the support frame 42 to realize the fixed installation of the two. Preferably, the drag chain 45 is connected to a side of the support frame 42 facing the interior of the compartment 11.

Here, the routing mechanism 40 further includes a fixing box 46 mounted on the supporting frame 42 and a mounting box 47 mounted in the compartment 11, a rear end of the drag chain 45 is connected to the mounting box 47, and a front end of the drag chain 45 is connected to a rear side of the fixing box 46. It should be noted that the rear end and the front end of the drag chain 45 are not strictly defined for the positions of the two ends of the drag chain 45, but are defined for convenience of description. In other words, when the drawer type door body 20 moves, the front end of the drag chain 45 may be located behind the rear end of the drag chain 45.

The fixing frame 41 includes a main body 411 attached to the sidewall 111, and a first extending portion 412 and a second extending portion 413 formed by folding and extending from upper and lower side edges of the main body 411 toward the interior of the compartment. At least two fixing holes 414 are formed on the main body 411 at intervals to realize the fixed mounting of the fixing frame 41 and the side wall 111; the first extending portion 412 and the second extending portion 413 protrude upward and downward in opposite directions to form a first holding arm 415 and a second holding arm 416 for holding the first sliding rail 431, respectively, and the main body portion 411 further forms a limiting arm 417 extending obliquely forward and backward to limit the first sliding rail 431 from moving forward after the assembly is completed.

In addition, a rack 418 extending back and forth is formed on one side surface of the second extending portion 413, and the rack 418 is located on one side of the second holding arm 416 facing away from the main body portion 411. The routing mechanism 40 further comprises a balancing assembly 48, wherein the balancing assembly 48 comprises a pair of gears 481 which are respectively rotatably connected to the rear ends of the two supporting frames 42, and the pair of gears 481 are oppositely arranged left and right and can roll back and forth along the rack 418. The balancing assembly 48 further includes a balancing bar 482 extending horizontally in the left-right direction and connected between the pair of gears 481. When the drawer type door body 20 pushes and pulls the support frame 42 to move back and forth, the balance assembly 48 can ensure that the left and right opposite support frames 42 move synchronously, and the operation is smoother. In addition, a stopping portion 419 is formed at the rear end of the fixing frame 41 to prevent the sliding rail assembly 43 from exceeding a predetermined position during forward and backward assembly; and a guiding structure is further formed at the front end of the fixing frame 41, and the guiding structure specifically includes an inclined surface or a curved surface formed at the front side of the main body 411, the first extending portion 412 and the second extending portion 413 and extending toward the corresponding side wall 111 of the fixing frame 41, so as to facilitate assembly.

As shown in fig. 5, the supporting frame 42 has a fixing portion 421 fixed to the third slide rail 433, and a bearing portion 422 located above the fixing portion 421. The fixing portion 421 is provided with at least two mounting holes 423 arranged at intervals in front and back for mounting the third slide rail 433; the gear 481 is specifically attached to the rear end of the fixed portion 421. The supporting portion 422 is bent from the fixing portion 421 toward the interior of the compartment 11 and then extends upward to a height exceeding the height of the fixing frame 41, and further is bent toward the side wall 111 correspondingly mounted on the supporting frame 42 to shield the fixing frame 41 below. The bearing portion 422 is further provided with a limiting hole 424 adapted to the drawer box 30, so that when the drawer box 30 is placed downwards and pressed against the surface of the bearing portion 422, the position is more stable. In addition, the bearing portion 422 and the first extending portion 412 are disposed in a clearance, so as to prevent the supporting frame 42 from being scratched and worn by the fixing frame 41 during the moving process.

In addition, attention is paid to the structural design of the support frame 42 on the side corresponding to the cable 44 and the tow chain 45, the support frame 42 on the side further includes an installation portion 425 located below the fixed frame 41 and a connection portion 426 connected and disposed between the fixed portion 421 and the installation portion 425, and both the installation portion 425 and the connection portion 426 are similarly disposed with a gap from the second extension portion 413. The mounting portion 425 is disposed adjacent to the front end of the supporting frame 42, and the fixing box 46 is fixedly mounted on the mounting portion 425, that is, the fixing of the front end of the drag chain 45 and the supporting frame 42 is realized by the fixing box 46. The front side of the connecting part 426 is bent towards the direction of the fixing frame 41 to form a folding plate 4261, and the folding plate 4261 can prevent sundries from falling into the fixing frame to a certain extent, so that the structure is more attractive.

The mounting portion 425 forms a mounting space opened toward one side of the interior of the compartment 11 in the lateral direction, and the mounting portion 425 includes a top plate 4251, a bottom plate 4252, and a side plate 4253 connecting the top plate 4251 and the bottom plate 4252, which are disposed to face each other in the vertical direction. The height between the top plate 4251 and the bottom plate 4252 is matched with that of the fixing box 46, and both the top plate 4251 and the bottom plate 4252 are provided with first bayonets 4254, preferably, at least two first bayonets 4254 arranged at intervals in the front and at the back are respectively arranged on the top plate 4251 and the bottom plate 4252. The side plate 4253 is provided with a second bayonet 4255. The edge of the bottom plate 4252 is recessed towards the corresponding side wall 111 of the supporting frame 42 to form a positioning slot 4256, so that the fixing box 46 can be installed conveniently. The length of the bottom plate 4252 extending back and forth is not less than the length of the fixing box 46, and the lengths of the bottom plate 4252 and the fixing box 46 are preferably approximately equal, so that the requirement of stable installation of the fixing box 46 can be met, and the bottom plate 4252 can be prevented from influencing the bending deformation of the drag chain 45 connected to the fixing box 46.

Typically, the tow chain 45 comprises a plurality of links 451 connected in series. Referring to fig. 6, each link 451 has two oppositely disposed clamping plates 4511 and two blocking plates 4512 connecting the two clamping plates 4511, and the clamping plates 4511 and the blocking plates 4512 together form a cavity for receiving the cable 44. Preferably, at least one of the first and

second connectors

441, 442 can pass through the cavity to facilitate the actual production and assembly. Of course, the size of the tow chain 45 may be reduced to fit the cavity to the outer diameter of the cable 44, so as to improve the aesthetic property of the tow chain 45 and save the installation space, but the cable 44 needs to be threaded into the tow chain 45 first, and then the first connector 441 and the second connector 442 are connected and disposed correspondingly.

The two ends of the clamping plate 4511 are respectively provided with a connecting hole 4513 and a connecting column 4514, the connecting holes 4513 and the connecting column 4514 are respectively butted with the connecting column 4514 and the connecting hole 4513 of the adjacent chain link 451 on the corresponding side, and the adjacent chain links 451 can rotate relative to each other along the axial direction of the connecting holes 4513 and the connecting column 4514. Generally, the connecting hole 4513 and the connecting column 4514 are respectively configured as a circular hole and a cylinder, and in order to allow the adjacent chain link 451 to keep free movement, the distance between the two clamping plates 4511 on the side of the connecting hole 4513 is greater than the distance between the two clamping plates 4511 on the side of the connecting column 4514.

Due to the space between the drawer box 30 and the sidewall 111, the drag chain 45 is preferably folded in a height direction, i.e., the connecting hole 4513 and the connecting post 4514 of the link 451 of the drag chain 45 are laterally arranged in the left and right directions. In this embodiment, in order to reduce the installation length of the cable 44 and the drag chain 45 and the corresponding material cost, the installation box 47 is preferably installed at a position near the opening of the compartment 11. Further, the mounting box 47 is located below the fixing frame 41 and spaced from the supporting frame 42.

The fixing box 46 is disposed adjacent to the front end of the supporting frame 42, and in order to prevent the tow chain 45 from being exposed to the outside when the drawer type door body 20 is pulled open, the side plate 4253 of the mounting portion 425 extends rearward beyond the mounting space to the rear end of the supporting frame 42. Meanwhile, the supporting frame 42 is further protruded toward the interior of the compartment 11 to form a supporting protrusion 427, and the supporting protrusion 427 is preferably disposed at a middle position in the front-rear direction of the supporting frame 42, and the rear end of the fixed box 46 is spaced from the supporting protrusion 427. The intermediate position is not limited to the midpoint position of the support frame 42 in a strict sense, and may be a position near the midpoint of the support frame 42 in the front-rear direction. When the drawer-type door body 20 is pulled out, the supporting protrusion 427 can prevent a part of the chain link 451 of the drag chain 45 from falling down and exceeding the supporting frame 42, which affects the appearance; when the drawer door 20 is retracted to the closed state, the supporting protrusions 427 do not affect the deformation and folding of the tow chain 45. The side plate 4253 extends rearward beyond the support protrusions 427, and the support protrusions 427 are formed by folding and extending the lower edge of the side plate 4253 toward the compartment inner side. The support protrusions 427 are preferably provided here in the form of plate-like structures that can support and limit the drag chain 45. Further, the bottom plate 4252 may be arranged to extend backward to a position near the middle of the supporting frame 42, that is, the back half part of the bottom plate 4252 may perform the function of the supporting protrusion 427, and in this case, the supporting protrusion 427 does not need to be additionally arranged, so as to meet the product assembly requirement.

Referring to fig. 7 and 8, the fixing box 46 and the supporting frame 42 are fixed to each other in a clamping manner, and the fixing box 46 is disposed in an opening manner towards one side of the mounting portion 425 along the transverse direction, so as to facilitate the mounting of the second connector 442 and the door-side electrical connector. The rear end of the fixing box 46 is provided with a first socket 461, and the fixing box 46 is preferably made of an elastic insulating material, such as organic resin, plastic, and the like, so as to fix the front end of the drag chain 45 to the first socket 461 in a manner of plugging and clamping, and meanwhile, to facilitate the fixing and installation of the fixing box 46 and the supporting frame 42.

Specifically, the fixing box 46 includes a top wall 462 and a bottom wall 463 which are arranged to face each other in the up-down direction, and a connecting wall 464 which connects the top wall 462 and the bottom wall 463. Fixing

blocks

4621 and 4631 which are matched and fixed with the first bayonets 4254 on the top plate 4251 and the bottom plate 4252 are further formed on the upper surface of the top wall 462 and the lower surface of the bottom wall 463 respectively, the fixing blocks 4621 and 4631 are arranged in a wedge shape, and in the installation process of the fixing box 46, the fixing blocks 4621 and 4631 are firstly squeezed by the top plate 4251 and the bottom plate 4252 to deform oppositely, and then continuously slide until the fixing blocks 4621 and 4631 are clamped and fixed with the first bayonets 4254.

A receiving cavity 465 for receiving the second connector 442 and the door-side electrical connector is further formed at a middle position of the fixing box 46 along the front-rear direction, and in order to avoid an influence on the receiving cavity 465, which may be caused when the fixing blocks 4621, 4631 are deformed by being pressed, the fixing blocks 4621, 4631 are disposed to deviate from the receiving cavity 465 along the front-rear direction. Preferably, the two fixing

blocks

4621 and 4631 are disposed at the front and rear sides of the accommodating cavity 465 respectively. Here, in order to reduce the requirement for the elasticity of the material of the fixing box 46 itself in a low temperature environment, the top wall 462 is further formed with first strip-shaped grooves 4622 located beside the fixing blocks 4621, the first strip-shaped grooves 4622 are arranged in pairs, and a first elastic wall 4623 is formed between the first strip-shaped grooves 4622 of the same group, and the fixing blocks 4621 are protruded on the upper surface of the first elastic wall 4623. Similarly, the bottom wall 463 is also formed with a second strip-shaped groove 4632 beside the fixed block 4631, and the fixed block 4631 is formed on the lower surface of the corresponding second elastic wall 4633.

The fixing box 46 further includes a retaining wall 466 formed at the rear end of the top wall 462 or the bottom wall 463, the retaining wall 466 is disposed opposite to the connecting wall 464, and the first insertion port 461 is formed between the retaining wall 466 and the connecting wall 464. The retaining wall 466 is formed with a retaining block 4661 facing backward and facing away from the connecting wall 464, and the retaining block 4661 and the second bayonet 4255 are mutually retained and fixed to further enhance the stability of the fixing box 46. In addition, a positioning block 4634 is formed on the bottom wall 463 of the fixing box 46 and protrudes downward, and the positioning block 4634 can cooperate with the positioning slot 4256 to realize positioning and assembling during the installation process of the fixing box 46. Of course, the positioning slot 4256 may also be disposed at the junction between the top plate 4251 and the connecting portion 426, and a corresponding positioning mechanism is required to be protruded on the top wall 462 of the fixing box 46, which is not described herein again.

The connecting wall 464 and the holding wall 466 are also formed with a plug structure corresponding to the connecting hole 4513 or the connecting post 4514 of the chain link 451 at the front end of the drag chain 45. Here, the retaining wall 466 is fixedly connected to the bottom wall 463, and an upper end of the retaining wall 466 is separated from the top wall 462, so that the first socket 461 is expanded and deformed in the transverse direction during the plugging process of the drag chain 45, thereby facilitating the assembly. A set of insertion bosses 467 are formed on one side of the connecting wall 464 and one side of the holding wall 466 facing the first insertion opening 461, the distance between the insertion bosses 467 matches with the distance between the two opposite clamping plates 4511 in the chain link 451, insertion holes 4671 matched with the connecting columns 4514 are formed on the insertion bosses 467, and guide surfaces 4672 extending backward are formed on the insertion bosses 467. The guide surfaces 4672 formed on the set of inserting bosses 467 are arranged oppositely and the distance between the guide surfaces 4672 is gradually increased from front to back, the set of connecting posts 4514 on the chain link 451 are firstly contacted with the guide surfaces 4672, in the process of forward sliding inserting, the connecting posts 4514 and the inserting bosses 467 are mutually pressed, the holding wall 466 deforms towards one side away from the connecting wall 464, meanwhile, the distance between the two clamping plates 4511 of the chain link 451 is also reduced, until the connecting posts 4514 slide into the inserting holes 4671, the holding wall 466 and the chain link 451 respectively return to the original state, and the inserting of the front end of the drag chain 45 is completed. In order to avoid the plugging dislocation, a limiting protrusion is further formed in the first socket 461, and in particular, the bottom wall 463 is further upwardly protruded to form a first limiting protrusion 4635 at a position adjacent to the first socket 461. The first position-limiting protrusion 4635 can abut against a baffle 4512 at the lower side of the chain link 451, so as to prevent the drag chain 45 from being inserted too deeply, which causes the connecting column 4514 to be separated from the inserting hole 4671, and even causes the drag chain 45 or the retaining wall 466 to be deformed and damaged.

In addition, barrier ribs 468 are further formed on the front side and the rear side of the accommodating cavity 465, and the barrier ribs 468 can better ensure the structural strength of the accommodating cavity 465, and also realize effective front and rear limiting on the second connector 442 and the door side electric connector accommodated therein, so as to prevent the front and rear displacement or the separation of the two. A rib 469 extending along the inner surface of the top wall 462, and/or the connecting wall 464, and/or the bottom wall 463 is formed inside the receiving cavity 465, and the rib 469 may also reinforce the structure of the receiving cavity 465 and also hold and position the second connector 442 and the door-side electrical connector that are mated with each other.

Referring to fig. 9, the mounting box 47 is directly fixed to the side wall 111, and a second insertion port 471 is formed in the mounting box 47 and opens backward, and the second insertion port 471 is used for being inserted into and matched with the rear end of the drag chain 45. Here, the mounting box 47 has a first portion located between the support frame 42 and the side wall 111 and a second portion located below the support frame 42, that is, the mounting box 47 has an L shape with a cross section in the front-rear direction being inverted as a whole, and the second receptacle 471 is formed at a rear end of the second portion. The cable 44 led out from the second interface 471 extends backwards along with the drag chain 45, then bends forwards by 180 degrees, and then continues to extend into the fixing box 46. Due to the limiting effect of the adjacent chain links 451, the drag chain 45 has the minimum bending radius, that is, the bending deformation angle of the cable 44 can be well limited by the drag chain 45, so that the cable 44 is prevented from being excessively bent, deformed and damaged; and the extension part of the cable 44 between the fixing box 46 and the mounting box 47 is completely accommodated in the drag chain 45, so that the cable 44 can be well prevented from bouncing and being worn by compression.

Preferably, in order to reduce the stress generated by the drag chain 45 in the transverse direction, the first and

second insertion ports

461, 471 are arranged flush with each other in the left-right direction. The first interface 461 is higher than the second interface 471, and considering the minimum bending radius of the drag chain 45, the height difference between the first interface 461 and the second interface 471 in the height direction is preferably not less than twice the minimum bending radius of the drag chain 45.

The mounting box 47 has a front wall 472 and a rear wall 473 arranged in front and rear opposition, and a cover 474 connected between the front wall 472 and the rear wall 473, and the mounting box 47 is also made of an elastic insulating material. The rear wall 472 extends forward adjacent to the second receptacle 471 to form a mating plate 475, the mating plate 475 protrudes opposite to a side of the cover plate 474 facing the second receptacle 471 to form a pair of plug posts 476, and the plug posts 476 are mated with the connecting holes 4513 of the rearmost link 451 of the drag chain 45. In the pair of the plug posts 476, a guide surface 4761 extending rearward is formed on the rear side of the plug post 476. The guide surfaces 4761 formed on the plug posts 476 are oppositely arranged and the distance between the guide surfaces is gradually increased from front to back, the two clamping plates 4511 of the chain link 451 are firstly contacted with the guide surface 4761, during the forward sliding and plugging process, the clamping plates 4511 and the plug posts 476 are pressed against each other, the matching plate 475 is deformed towards the side away from the cover plate 474, meanwhile, the distance between the two clamping plates 4511 of the chain link 451 is also reduced by the pressing, until the plug posts 476 slide into the connecting holes 4513, the matching plate 475 and the chain link 451 respectively return to the original state, and the plugging of the rear end of the drag chain 45 is completed. In order to avoid the occurrence of plugging dislocation, a limiting protrusion is also formed in the second plugging port 471, specifically, the second plugging port 471 protrudes in the vertical direction to form a second limiting protrusion 4711, the second limiting protrusion 4711 can abut against a baffle 4512 on the upper side of the chain link 451, so as to avoid that the drag chain 45 is inserted too deeply, the connecting hole 4513 is separated from the plugging column 476, and even the drag chain 45 or the matching plate 475 is deformed and damaged.

In combination with the structure description of the first socket 461, it is conceivable that the matching structures of the first socket 461 and the second socket 471 and the drag chain 45 can be replaced with each other, that is, a socket post (not shown) matching with the connecting hole 4513 of the chain link 451 is disposed in the first socket 461, and a socket boss and a socket hole (not shown) matching with the connecting hole 4514 of the chain link 451 is disposed in the second socket 471.

A limiting member 477 for limiting the position of the cable 44 is further disposed in the mounting box 47, and the limiting member 477 may be generally configured as a plate-shaped, column-shaped, or hook-shaped protrusion mechanism, which can effectively limit the cable 44 from bouncing in the mounting box 47, and prevent the first connector 441 from being separated from the box-side electrical connector.

The mounting box 47 is further formed with a mounting region 478 which is arranged in a closed manner, an opening 4741 is formed in a position of the cover plate 474 corresponding to the mounting region 478, and the mounting box 47 and the side wall 111 of the compartment 11 are fixedly mounted through the opening 4741, and meanwhile, moisture in the compartment 11 is effectively prevented from invading the heat insulation layer of the box body 10. Here, a fixing protrusion 4742 is further formed below the cover 474, and the fixing protrusion 4742 is fixed to an inner wall of the compartment 11 or a separate shelf (not shown) provided in the compartment 11, thereby further enhancing structural stability of the mounting box 47. Furthermore, a housing cavity 479 for housing electrical control components is formed in the mounting box 47 adjacent to the front wall 472, such as: a sensor for sensing whether the drawer type door body 20 is closed or not may be fixedly installed in the seating cavity 479.

In addition, a corresponding door support iron (not shown) is fixedly arranged at the rear side of the drawer door 20, and the door support iron is fixed to the support frame 42 through a screw. In another embodiment of the present invention, the door body supporting iron and the supporting frame 42 may be designed as a single body and then fixed to the drawer type door body 20.

In summary, the present invention realizes the front and back movement of the drawer-type door 20 of the refrigerator 100 in the compartment 11 and the stable electrical connection between the drawer-type door 20 and the refrigerator body 10 through the routing mechanism 40. The part of the cable 44 between the fixing box 46 and the mounting box 47 is completely accommodated in the drag chain 45, which effectively protects the cable 44, prevents the cable 44 from being extruded, deformed and damaged, and effectively ensures the normal operation of the electrical components on the drawer type door body 20. Besides, the wiring mechanism 40 has a more reasonable structural design, is easy and convenient to install, and is beautiful and reliable.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a walk line mechanism for realize the electric connection of drawer type door body and box, the box is formed with the compartment that sets up towards the opening, the drawer type door body can move in order to open or close this compartment along the fore-and-aft direction, be equipped with electric component on the drawer type door body, its characterized in that: the wiring mechanism comprises a cable for supplying power to the electrical component and a drag chain for accommodating part of the cable, and one end of the drag chain is used for being fixed in the compartment; the wiring mechanism further comprises a support frame fixed on the rear side of the drawer type door body and a fixing box fixed on the support frame, a first inserting port is formed in the fixing box, the first inserting port is formed in the rear end of the fixing box, and the other end of the drag chain is inserted into the first inserting port.

2. The routing mechanism of claim 1, wherein: the fixing box is provided with a top wall, a bottom wall, a connecting wall and a fixing wall, wherein the top wall and the bottom wall are arranged oppositely, the connecting wall is used for connecting the top wall and the bottom wall, the fixing wall is arranged opposite to the connecting wall, one side of the fixing wall is fixedly connected to the top wall or the bottom wall, and the other side of the fixing wall is separated from the bottom wall or the top wall.

3. The routing mechanism of claim 2, wherein: the tow chain includes a plurality of chain links that meet in proper order, the chain link has two splint of controlling relative setting, the both ends of splint are formed with connecting hole and spliced pole respectively.

4. The routing mechanism of claim 3, wherein: the first inserting port is formed between the connecting wall and the fixing wall, a group of inserting bosses which are oppositely arranged are formed on one sides of the connecting wall and the fixing wall facing the first inserting port, and inserting holes matched with the connecting columns are formed in the inserting bosses.

5. The routing mechanism of claim 4, wherein: the insertion bosses are also provided with guide surfaces which are obliquely inclined and extended backward, the guide surfaces respectively formed on the group of insertion bosses are oppositely arranged, and the distance between the guide surfaces is gradually increased from front to back.

6. The routing mechanism of claim 3, wherein: and one side of the connecting wall and one side of the fixing wall facing the first inserting port are provided with a group of oppositely arranged inserting columns, and the inserting columns are matched with the connecting holes to realize the mutual connection of the corresponding chain links and the fixing box.

7. The routing mechanism of claim 2, wherein: one end of the top wall or the bottom wall, which is adjacent to the first interface, is also protruded to form a limiting bulge.

8. The routing mechanism of claim 1, wherein: the fixed box is made of elastic insulating materials.

9. The refrigerator comprises a refrigerator body and a drawer type door body, wherein a chamber which is opened forwards is formed in the refrigerator body, the drawer type door body can move along the front-back direction to open or close the chamber, and an electric component is arranged on the drawer type door body, and the refrigerator is characterized in that: the refrigerator further comprises the routing mechanism according to any one of claims 1 to 8.

10. The utility model provides a walk line mechanism, includes the relative a set of slide rail set spare that sets up about, slide rail set spare has the fixed rail, relatively but the movable rail of fixed rail back-and-forth movement, its characterized in that: the routing mechanism further comprises a drag chain and a cable partially accommodated in the drag chain, and one end of the drag chain and the fixed rail keep fixed relative positions; the wiring mechanism further comprises a support frame fixed with the movable rail and a fixing box fixed on the support frame, a first inserting port is formed in the fixing box, the first inserting port is formed in the rear end of the fixing box, and the other end of the drag chain is inserted into the first inserting port.

11. The refrigerator comprises a refrigerator body and a drawer type door body, wherein a chamber which is opened forwards is formed in the refrigerator body, the drawer type door body can move along the front-back direction to open or close the chamber, and an electric component is arranged on the drawer type door body, and the refrigerator is characterized in that: the refrigerator further comprises a routing mechanism according to claim 10; the compartment is provided with two side walls which are oppositely arranged at the left and the right, the fixed rail is fixed on the side walls, and the movable rail is connected to the drawer type door body, so that the drag chain moves back and forth along with the drawer type door body.