Door body droop adjustment device and refrigerator

Abstract

The present invention discloses a door body sag adjustment device and a refrigerator. The adjustment device includes a fixed seat for being fixed on the box body; a hinge, which includes a hinge plate and a rotating shaft. The front side portion of the hinge plate is hinged to the door body through the rotating shaft, and the rear side portion of the hinge plate is slidably arranged on the fixed seat. When the door body is lifted, the hinge plate slides in a direction opposite to the horizontal component force direction of the door body sag; a check mechanism for preventing the hinge plate from sliding back to its original position after the door body is lifted. The above-mentioned door body sag adjustment device, by providing a slidable hinge plate and a check mechanism, can realize the sag reset adjustment of the door body by lifting the door body upward, and the operation is simple; after adjustment, the check mechanism can prevent the hinge plate from resetting and sliding, so that the door body is self-locked in the normal position and will not sag again, avoiding the phenomenon of poor sealing caused by the sag of the door body and the leakage of cold air in the accommodating chamber, thereby improving the refrigeration effect of the refrigerator.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a door sag adjustment device and a refrigerator. Background Art

[0002] For traditional large refrigerators such as side-by-side refrigerators, the door body is relatively large, resulting in a heavy door body. After the refrigerator is used for a long time, the door body may sag due to its own weight, causing the lap distance between the door seal and the front border of the box body to become smaller. The reduction of the lap distance between the door seal and the front border of the box body directly affects the heat preservation effect of the refrigerator. The cold air in the compartment can flow out from the door seal, resulting in cold leakage and increasing the energy consumption of the refrigerator. Summary of the Invention

[0003] Based on this, the technical problem to be solved by the present invention is to provide a door sag adjustment device and a refrigerator that can adjust the sag of the door body and are easy to operate.

[0004] To achieve the above-mentioned invention object, the present invention adopts the following technical solutions:

[0005] A door sag adjustment device includes:

[0006] A fixed seat for being fixed on the box body;

[0007] A hinge including a hinge plate and a rotating shaft. The front side of the hinge plate is hinged to the door body through the rotating shaft, and the rear side of the hinge plate is slidably arranged on the fixed seat; when the door body is lifted, the hinge plate slides in the direction opposite to the horizontal component force direction of the door body sag.

[0008] A check mechanism for preventing the sliding reset of the hinge plate after the door body is lifted.

[0009] Further, the check mechanism includes:

[0010] A ratchet and pawl mechanism arranged on the fixed seat; the ratchet of the ratchet and pawl mechanism rotates unidirectionally through the pawl;

[0011] A gear and rack mechanism, the rack of the gear and rack mechanism is arranged on the hinge plate, and the gear of the gear and rack mechanism is coaxially fixed with the ratchet; when the door body is lifted, the hinge plate slides and is transmitted through the gear and rack mechanism to make the ratchet rotate.

[0012] Further, a bracket is arranged on the fixed seat, the ratchet is rotatably arranged on the bracket, and the pawl is swingably arranged on the bracket; a reset member is arranged on the bracket, and the reset member is used for the swing reset of the pawl.

[0013] Further, a shifting block is arranged on the side surface of the pawl, a sliding groove is formed in the bracket, the shifting block is arranged in the sliding groove, when the ratchet wheel rotates unidirectionally, the pawl is driven to swing, so that the shifting block slides up and down along the sliding groove; the bottom end of the sliding groove restricts the shifting block from sliding downwards, and restricts the reverse rotation of the ratchet wheel.

[0014] Further, the reset member includes:

[0015] a thimble; a first inclined surface is arranged on the lower side surface of the end of the thimble;

[0016] a spring, one end of the spring is fixed to the bracket, and the other end is sleeved on the thimble;

[0017] one end of the pawl is a claw part that cooperates with the ratchet wheel, and a second inclined surface is arranged on the upper side surface of the other end of the pawl, and the second inclined surface is in fit connection with the first inclined surface of the thimble.

[0018] Further, the pawl is a bidirectional pawl, and the claw part at one end of the pawl includes an upper claw part and a lower claw part; a fourth inclined surface is arranged on the lower side surface of the other end of the pawl, a third inclined surface is arranged on the upper side surface of the end of the thimble, and the third inclined surface is in fit with the fourth inclined surface; during the lifting process of the door body, the lower claw part cooperates with the ratchet wheel; when the shifting block is pushed upwards, the end of the pawl can cross over the thimble and be located above the thimble, so that the third inclined surface is in fit with the fourth inclined surface, and the upper claw part cooperates with the ratchet wheel, and the unidirectional rotation direction of the ratchet wheel is opposite to the unidirectional rotation direction when the lower claw part cooperates with the ratchet wheel.

[0019] Further, the bracket has a receiving groove, the ratchet wheel and the pawl are installed in the receiving groove; an installation groove is arranged at one end of the receiving groove, the spring is arranged in the installation groove, one end of the thimble is located in the installation groove and is connected with the spring, and the other end extends out of the installation groove and abuts against the pawl.

[0020] Further, a long hole is formed in the rear side of the hinge plate, a fastener is arranged in the long hole, and the hinge plate is connected with the fixed seat through the fastener.

[0021] The present invention further includes a refrigerator, including a box body and a door body, and including the door body sagging adjusting device as described above.

[0022] Further, the fixed seat is arranged on the outer side surface of the top of the box body, and the front side part of the hinge plate is hinged to the outer side surface of the top of the door body.

[0023] Compared with the prior art, the advantages and positive effects of the present invention are:

[0024] The above-mentioned door body sag adjustment device can achieve the sag reset adjustment of the door body by setting a slidable hinge plate and a check mechanism, and the operation is simple. After adjustment, the check mechanism can prevent the hinge plate from resetting and sliding, so that the door body is self-locked in the normal position and will not sag again, avoiding the phenomenon of poor sealing caused by the sag of the door body and the leakage of cold air in the accommodation chamber, thereby improving the refrigeration effect of the refrigerator.

[0025] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is the front view of the refrigerator of the present invention;

[0028] Figure 2 It is the top view of the refrigerator of the present invention;

[0029] Figure 3 It is the three-dimensional view of the door body sag adjustment device of the present invention;

[0030] Figure 4 It is Figure 1 The enlarged view at A in , showing the state of the dial when the door body is lifted and adjusted;

[0031] Figure 5 It is the cross-sectional view of the door body sag adjustment device of the present invention, showing the cooperation diagram of the ratchet and the pawl when the door body is lifted and adjusted;

[0032] Figure 6 It is the front view of the door body sag adjustment device of the present invention, showing the state of the dial when the door body is lowered and adjusted;

[0033] Figure 7 It is the cross-sectional view of the door body sag adjustment device of the present invention, showing the cooperation diagram of the ratchet and the pawl when the door body is lowered and adjusted;

[0034] Description of the Reference Numerals:

[0035] Cabinet 1;

[0036] Door body 2;

[0037] Door body sag adjustment device 3;

[0038] Fixed seat 300; Bracket 310; Accommodation groove 311; Slide groove 312; Installation groove 313;

[0039] Hinge 400; hinge plate 410; long slot 411; rotating shaft 420;

[0040] Ratchet and pawl mechanism 500; ratchet 510; pawl 520; pawl portion 521; upper pawl portion 522; shifting block 523; second inclined surface 524; fourth inclined surface 525; rotating shaft 526;

[0041] Rack and pinion mechanism 600; rack 610; pinion 620;

[0042] Reset member 700; ejector pin 710; first inclined surface 711; third inclined surface 712; spring 720;

[0043] Screw 800. Detailed implementation manners

[0044] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0045] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0046] Refer to Figures 1-7 , which is an embodiment of the door sag adjustment device 3 of the present invention. After the door body 2 sags due to its own weight, the door body 2 is lifted, and the door body 2 is reset to the normal position through the door sag adjustment device 3 of the present invention. The door sag adjustment device 3 includes a fixed seat 300, a hinge 400 and a check mechanism. The fixed seat 300 is used to be fixed on the box body 1. The hinge 400 includes a hinge plate 410 and a rotating shaft 420. The front side portion of the hinge plate 410 is hinged to the door body 2 through the rotating shaft 420, and the rear side portion of the hinge plate 410 is slidably arranged on the fixed seat 300. When the door body 2 sags, the door body 2 is lifted, and the hinge plate 410 can slide in the direction opposite to the horizontal component force direction of the sag of the door body 2. The check mechanism is used to prevent the hinge plate 410 from sliding back after the door body 2 is lifted. In this embodiment, taking the right-opening door as an example, the door sag adjustment device 3 is horizontally arranged on the right side of the box body 1. After the door body 2 sags, the left side of the door body 2 is lower than the right side, that is, the sag direction is in the left direction in the horizontal component force direction (such as Figure 2 the arrow direction in Figure 1in the direction of the arrow). When the door body 2 is lifted, the hinge plate 410 slides to the right along the fixed plate. When the door body 2 is lifted to the normal position, the check mechanism locks the hinge plate 410 self-locking and cannot slide to the left, so that the door body 2 is kept in the normal position, playing a role in adjusting after the door body 2 sags.

[0047] The above-mentioned door body sag adjustment device 3, by setting a slidable hinge plate 410 and a check mechanism, can realize the sag reset adjustment of the door body 2 by lifting the door body 2 upward, and the operation is simple; after adjustment, the check mechanism can prevent the hinge plate 410 from resetting and sliding, so that the door body 2 is self-locked in the normal position and will not sag again, avoiding the phenomenon that the door body 2 sags and causes poor sealing and cold air leakage in the accommodation chamber, thereby improving the refrigeration effect of the refrigerator.

[0048] Specifically, as Figure 3 shown, the check mechanism includes a ratchet and pawl mechanism 500 and a rack and pinion mechanism 600.

[0049] The ratchet and pawl mechanism 500 is arranged on the fixed seat 300. The ratchet 510 of the ratchet and pawl mechanism 500 realizes one-way rotation through the pawl 520.

[0050] The rack and pinion mechanism 600 includes a rack 610 and a pinion 620 that mesh with each other. The rack 610 of the rack and pinion mechanism 600 is arranged on the hinge plate 410, and the pinion 620 of the rack and pinion mechanism 600 is coaxially fixed with the ratchet 510. In this embodiment, the hinge plate 410 and the rack 610 are preferably of an integral structure, that is, long strip teeth are arranged on the hinge plate 410 in the left-right direction to form the rack 610. When the door body 2 is lifted, the hinge plate 410 slides to the right, and through the transmission of the rack and pinion mechanism 600, the pinion 620 and the ratchet 510 rotate counterclockwise. The ratchet 510 of the ratchet and pawl mechanism 500 rotates as the driving part, and the pawl 520 acts on the ratchet 510 as the driven part. When the ratchet 510 rotates counterclockwise, the pawl 520 does not limit the rotation of the ratchet 510; when the hinge plate 410 stops sliding to the right, due to the sag of the door body 2, the hinge plate 410 has a tendency to slide to the left, that is, the ratchet 510 has a tendency to rotate reversely. At this time, the pawl 520 abuts against the ratchet 510, so that the ratchet 510 cannot rotate reversely, that is, cannot rotate clockwise, thereby preventing the hinge plate 410 from sliding to the left and preventing the door body 2 from sagging again, realizing self-locking. In this embodiment, the check mechanism is driven by using the rack and pinion mechanism 600, which can realize the small-distance adjustment function; the ratchet and pawl mechanism 500 has a simple structure, realizes the check function, and the operation is simple.

[0051] In this embodiment, a bracket 310 integrally formed with the fixing base 300 is provided on the fixing base 300. The bracket 310 has a receiving groove 311, and the ratchet wheel 510 and the pawl 520 are installed in the receiving groove 311. Among them, the ratchet wheel 510 is rotatably arranged on the bracket 310, and the pawl 520 is swingably arranged on the bracket 310. A reset member 700 is provided on the bracket 310, and the reset member 700 is used for the swing reset of the pawl 520.

[0052] Specifically, one end of the pawl 520 is a claw portion 521 that cooperates with the ratchet wheel 510. A dial block 523 is provided on the side surface of the pawl 520. The dial block 523 and the claw portion 521 are respectively located on both sides of the rotation axis 526 of the pawl 520. As Figure 4 shown, a sliding groove 312 is formed on the bracket 310. The dial block 523 is arranged in the sliding groove 312 and can slide up and down along the sliding groove 312. When the ratchet wheel 510 rotates counterclockwise, the tooth crest of the ratchet wheel 510 drives the claw portion 521 of the pawl 520 to move downward. At this time, the dial block 523 moves upward along the sliding groove 312. When the claw portion 521 slides into the tooth root groove of the ratchet wheel 510, the pawl 520 is reset under the action of the reset member 700, and the dial block 523 moves downward along the sliding groove 312. In this way, during the counterclockwise rotation of the ratchet wheel 510, the dial block 523 reciprocates up and down along the sliding groove 312. When the claw portion 521 of the pawl 520 is located in the tooth root groove of the ratchet wheel 510, the dial block 523 is located at the bottom end of the sliding groove 312. The bottom end of the sliding groove 312 restricts the downward sliding of the dial block 523, thereby restricting the reverse rotation of the ratchet wheel 510. In this embodiment, by providing the sliding groove 312 to cooperate with the dial block 523, the swinging movement of the pawl 520 can be guided, the stability of the ratchet and pawl mechanism 500 can be improved, and at the same time, the dial block 523 is limited by the bottom of the sliding groove 312 to realize the check function of the ratchet wheel 510. In other embodiments, a protruding limiting portion may also be provided on the bracket 310 below the pawl 520 for abutting against the lower part of the pawl 520, which can prevent the claw portion 521 of the pawl 520 from swinging upward.

[0053] Specifically, as Figure 5As shown, the reset member 700 includes a thimble 710 and a spring 720 sleeved on the thimble 710. One end of the spring 720 is fixed to the bracket 310, and the other end is sleeved on the thimble 710. Specifically, an installation groove 313 is provided at one end of the accommodation groove 311. The spring 720 is arranged in the installation groove 313. One end of the thimble 710 is located in the installation groove 313 and connected to the spring 720, and the other end extends out of the installation groove 313 and abuts against the pawl 520. The lower side surface of the end portion of the thimble 710 extending out of the installation groove 313 has a first inclined surface 711; the upper side surface of the other end of the pawl 520 opposite to the claw portion 521 has a second inclined surface 524. The second inclined surface 524 is located below the first inclined surface 711, and the second inclined surface 524 cooperates with and abuts against the first inclined surface 711 of the thimble 710. When the ratchet wheel 510 rotates counterclockwise to drive the claw portion 521 of the pawl 520 to move downward, the other end of the pawl 520 (the end with the second inclined surface 524) moves upward. Under the action of the inclined surface structures of the first inclined surface 711 and the second inclined surface 524, the thimble 710 is driven to retract into the installation groove 313; when the ratchet wheel 510 rotates counterclockwise until the claw portion 521 of the pawl 520 is located at the tooth root of the ratchet wheel 510, the spring 720 pushes the thimble 710 to reset, and the thimble 710 further pushes the pawl 520 to reset. In other embodiments, the spring 720 may also be arranged at the bottom of the bracket 310. One end of the spring 720 is fixed to the bracket 310, and the other end is connected to the pawl 520, as long as the function of resetting the pawl 520 can be achieved.

[0054] During the adjustment process of lifting the door body 2, it is possible that excessive force is applied, causing the door body 2 to be lifted too far, resulting in a situation where the door body 2 is higher than the box body 1. At this time, due to the one-way adjustment function of the check mechanism, the door body 2 cannot be lowered by adjustment. To solve this situation, further, as Figure 7 shown, in the present invention, the pawl 520 is designed as a two-way pawl 520. The claw portion at one end of the pawl 520 includes an upper claw portion 522 and a lower claw portion. The upper side surface of the end portion of the thimble 710 has a third inclined surface 712. Correspondingly, the lower side surface of the other end of the pawl 520 has a fourth inclined surface 525, and the third inclined surface 712 cooperates with the fourth inclined surface 525. In this embodiment, the pawl 520 has an upper and lower symmetric structure; the end portion of the thimble 710 is conical, forming the first inclined surface 711 and the third inclined surface 712. During the lifting process of the door body 2, the claw portion 521 of the pawl 520 described above is the lower claw portion 521, and the lower claw portion 521 cooperates with the ratchet wheel 510, and its working principle is as described above and will not be elaborated further.

[0055] As Figure 6 and Figure 7As shown, when the adjustment position is too large and the door body 2 is higher than the box body 1, the dial block 523 can be manually pushed upward, so that the end of the pawl 520 crosses over the ejector pin 710 and is located on the upper side of the ejector pin 710, making the third inclined surface 712 in abutting fit with the fourth inclined surface 525. At this time, the upper claw portion 522 cooperates with the ratchet wheel 510. At this time, the one-way rotation direction of the ratchet wheel 510 is opposite to the one-way rotation direction when the lower claw portion 521 cooperates with the ratchet wheel 510, that is, at this time, the ratchet wheel 510 can only rotate clockwise, so that the door body 2 can be adjusted downward to the normal position. Among them, the working principles of the lower claw portion 521 and the upper claw portion 522 of the pawl 520 cooperating with the ratchet wheel 510 are the same, and will not be elaborated here.

[0056] In this embodiment, a long hole 411 arranged in the left-right direction is formed at the rear side of the hinge plate 410. A fastening member is arranged in the long hole 411, and the hinge plate 410 is slidably connected to the fixed seat 300 through the fastening member. The fastening member is preferably a screw 800, and the screw 800 is fixed on the fixed seat 300. The hinge plate 410 can slide along the screw 800 of the fixed seat 300 through the long hole 411. The long hole 411 can be formed on the right side or the left side of the hinge plate 410, or both the left and right sides are provided.

[0057] The present invention also includes a refrigerator. Referring to Figure 1 , the refrigerator includes a box body 1, a door body 2, and the above-mentioned door body sag adjustment device 3. Since the door body 2 sags and deforms severely at the upper hinge 400, in this embodiment, preferably, the door body sag adjustment device 3 is arranged at the top of the refrigerator, that is, the fixed seat 300 is arranged on the outer side surface of the top of the box body 1, and the front side portion of the hinge plate 410 is hinged to the outer side surface of the top of the door body 2. Or to increase the strength, a door body sag adjustment device 3 is also arranged on the lower sides of the box body 1 and the door body 2. The door body sag adjustment device 3 may further include an upper cover (not shown) to cover the fixed seat 300 and the hinge plate 410. In other embodiments, the door body sag adjustment device 3 can also be hidden and arranged at the top of the inner liner of the box body 1 to improve the appearance aesthetics.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. A door body sagging adjustment device, characterized in that, include: A fixing seat, used for fixing on the box body; The hinge comprises a hinge plate and a rotating shaft, wherein the front side of the hinge plate is hinged to the door body through the rotating shaft, and the rear side of the hinge plate is slidably arranged on a fixed seat; when the door body is lifted, the hinge plate slides in a direction opposite to the horizontal component force direction of the door body drooping; The non-return mechanism is used to prevent the hinge plate from sliding back to its original position after the door body is lifted; The non-return mechanism comprises: A ratchet and pawl mechanism is arranged on the fixed seat; the ratchet of the ratchet and pawl mechanism realizes unidirectional rotation through the pawl; A rack and pinion mechanism, wherein the rack of the rack and pinion mechanism is arranged on a hinge plate, and the gear of the rack and pinion mechanism is fixed coaxially with the ratchet wheel; when the door body is lifted, the hinge plate slides and is transmitted through the rack and pinion mechanism to rotate the ratchet wheel.

2. The door body sag adjustment device according to claim 1, wherein A bracket is arranged on the fixing seat, the ratchet wheel is rotatably arranged on the bracket, and the pawl is swingably arranged on the bracket; a reset member is arranged on the bracket, and the reset member is used for swinging and resetting the pawl.

3. The door body sagging adjustment device according to claim 2, characterized in that, A shift block is arranged on the side of the pawl, a slide groove is provided on the bracket, and the shift block is arranged in the slide groove. When the ratchet wheel rotates unidirectionally, the pawl is driven to swing, so that the shift block slides up and down along the slide groove; the bottom end of the slide groove limits the downward sliding of the shift block, thereby limiting the reverse rotation of the ratchet wheel.

4. The door body sagging adjustment device according to claim 3, characterized in that, The reset element comprises: The ejector pin has a first inclined surface on the lower side of the end of the ejector pin; A spring, one end of which is fixed to the bracket and the other end of which is sleeved on the ejector pin; One end of the pawl is a pawl portion matched with the ratchet wheel, and the upper side surface of the other end of the pawl has a second inclined surface, and the second inclined surface is matched and abutted with the first inclined surface of the ejector pin.

5. The door body sag adjustment device according to claim 4, characterized in that The pawl is a bidirectional pawl, and the pawl portion at one end of the pawl includes an upper pawl portion and a lower pawl portion; the lower side surface of the other end of the pawl has a fourth inclined surface, and the upper side surface of the end of the ejector pin has a third inclined surface, and the third inclined surface cooperates with the fourth inclined surface; during the lifting process of the door body, the lower pawl portion cooperates with the ratchet wheel; the shift block is pushed upward to enable the end of the pawl to pass over the ejector pin and be located on the upper side of the ejector pin, so that the third inclined surface cooperates with the fourth inclined surface, and the upper pawl portion cooperates with the ratchet wheel, and the unidirectional rotation direction of the ratchet wheel is opposite to the unidirectional rotation direction when the lower pawl portion cooperates with the ratchet wheel.

6. The door body sag adjustment device according to claim 4, characterized in that, The bracket has a receiving groove, and the ratchet and the pawl are installed in the receiving groove; one end of the receiving groove is provided with a mounting groove, and the spring is arranged in the mounting groove, one end of the ejector pin is located in the mounting groove and connected with the spring, and the other end extends out of the mounting groove and abuts against the pawl.

7. The door body sag adjustment device according to claim 1, characterized in that, A long hole is opened on the rear side of the hinge plate, a fastener is arranged in the long hole, and the hinge plate is connected to the fixing seat through the fastener.

8. A refrigerator, comprising a box body and a door body, characterized in that, It comprises a door droop adjusting device as described in any one of claims 1-7.

9. The refrigerator according to claim 8, characterized in that, The fixing seat is arranged on the top outer side surface of the box body, and the front side portion of the hinge plate is hinged to the top outer side surface of the door body.

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