Adjustable multi-movable-joint hinge and refrigerator

Abstract

The utility model discloses an adjustable multi-joint hinge and a refrigerator, the adjustable multi-joint hinge comprises two fixed seats and a transmission assembly rotatably connected with the two fixed seats, at least one fixed seat is an adjustable fixed seat, the adjustable fixed seat comprises a seat body, an adjusting piece and a sliding table, the adjusting piece is rotatably connected with the seat body, and helical teeth are arranged on the adjusting piece; the sliding table is in sliding connection with the seat body, a sliding hole is formed in the sliding table, the adjusting piece is slidably sleeved with the sliding table through the sliding hole, two protrusions are arranged on the sliding table in a spaced mode, and the two protrusions are in sliding contact with the two opposite side faces of the spiral teeth respectively; the transmission assembly is rotationally connected with the seat body or the sliding table of the adjustable fixing seat; when the adjusting part rotates forwards and backwards, the two protrusions can be matched with the spiral teeth correspondingly so as to drive the sliding table to reciprocate along the sliding hole, the position of the door body can be adjusted, and therefore the door body can be straightened, and the door body can be better attached to the cabinet body.

Description

Technical Field

[0001] The utility model relates to a hinge, in particular to an adjustable multi-joint hinge and a refrigerator. Background Art

[0002] The door and cabinet of a freezer are usually connected by a multi-joint hinge. The multi-joint hinge usually includes a cabinet fixing seat, a door fixing seat, and a transmission assembly connecting the cabinet fixing seat and the door fixing seat. The transmission assembly usually includes multiple joint levers connected to each other in a scissor-like manner. For example, a Chinese invention patent application with publication number CN117090464A discloses a multi-joint self-closing hinge, which includes a cabinet fixing seat, a door fixing seat, a first connecting member, a second connecting member, a third connecting member, a fourth connecting member, and an elastic assembly. The first connecting member, the second connecting member, the third connecting member, and the fourth connecting member constitute a transmission assembly connecting the cabinet fixing seat and the door fixing seat. The elastic assembly is installed on the second connecting member of the transmission assembly. When the door is opened to a critical state, the elastic assembly applies a closing force to the door, causing the door to close automatically.

[0003] However, in actual production, since the various components that constitute the multi-joint hinge will inevitably produce errors in the production process, and the various components that constitute the multi-joint hinge will inevitably have combined tolerances during assembly and installation, there will be deviations in the position of the door body after installation, resulting in insufficient fit between the door body and the cabinet body. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide an adjustable multi-joint hinge, which can adjust the position of the door body, thereby straightening the door body and making the door body fit more closely with the cabinet body.

[0005] One of the purposes of this utility model is achieved by adopting the following technical solution 1:

[0006] The cam is adapted to move the adjusting member so that the adjusting member can move relative to the adjusting member and the adjusting element can move relative to the adjusting member, the cam being adapted to move relative to the adjusting member and the adjusting element being capable of moving relative to the adjusting member.

[0007] Furthermore, the adjusting member includes a head and a shaft fixedly connected to the head, the shaft slidably passes through the sliding hole and is rotatably connected to the seat body, and the helical teeth are provided on the head.

[0008] Furthermore, the helical teeth and the shaft are provided on the same end surface of the head, and the helical teeth extend along the circumference of the shaft.

[0009] Furthermore, the helical tooth has a first end and a second end that are opposite to and spaced apart from each other along the extending direction of the helical tooth, and the distance from the helical tooth to the center of the shaft gradually decreases from the first end to the second end.

[0010] Furthermore, the end surface of the head facing away from the shaft is provided with a recessed groove for cooperating with a screwdriver.

[0011] Furthermore, the shaft includes a connecting section and a fixed section, the head, the connecting section and the fixed section are fixedly connected in sequence, and the diameters of the head, the connecting section and the fixed section decrease in sequence; the connecting section slides through the sliding hole, and the fixed section is rotatably connected to the seat body.

[0012] Furthermore, both of the fixing seats are adjustable fixing seats, and the length directions of the sliding holes of the two fixing seats are perpendicular to each other.

[0013] Furthermore, one of the two fixing seats is a cabinet fixing seat, and the other is a door fixing seat, and the transmission assembly is rotatably connected to the seat body of the cabinet fixing seat and the slide of the door fixing seat.

[0014] Furthermore, a guide hole is provided on the sliding platform of the cabinet fixing seat, and the length direction of the guide hole is parallel to the length direction of the sliding hole of the cabinet fixing seat; a retaining member is fixed on the seat body of the cabinet fixing seat, and the retaining member is slidably inserted into the guide hole.

[0015] Furthermore, the retaining member is a rivet, which includes a rivet head and a rivet rod fixedly connected to the rivet head. The rivet rod slides through the guide hole to be riveted to the base of the cabinet fixing seat, and the rivet head can abut against the slide.

[0016] Furthermore, a guide hole is provided on the seat body of the cabinet fixing seat, and the length direction of the guide hole is parallel to the length direction of the sliding hole of the cabinet fixing seat; a fixing hole is provided on the sliding platform, and a flange is protruded on one end of the fixing hole facing the corresponding seat body, and the flange is arranged around the periphery of the fixing hole and is slidably inserted into the guide hole.

[0017] Furthermore, the base body of the cabinet fixing seat includes a bottom side and a pair of extension sides extending vertically from both sides of the bottom side toward the transmission component. The bottom side and the extension sides form a receiving groove. The slide is slidably installed in the receiving groove. The adjustment member of the cabinet fixing seat is rotatably connected to the bottom side; the transmission component is rotatably connected to the pair of extension sides.

[0018] Furthermore, the sliding platform of the door body fixing seat is provided with a sliding hole, and the length direction of the sliding hole is parallel to the length direction of the sliding hole of the door body fixing seat; the seat body of the door body fixing seat is provided with a plurality of mounting holes, and the mounting holes are provided with fixing parts for fixed connection with the door body, and at least one of the fixing parts can be slidably inserted into the sliding hole.

[0019] Furthermore, the slide of the door body fixing seat includes a base plate and a pair of side plates extending vertically from both sides of the base plate toward the transmission assembly. The base plate is slidingly connected to the seat body of the door body fixing seat, the sliding hole of the door body fixing seat is provided on the base plate, and the transmission assembly is rotatably connected to the pair of side plates.

[0020] Furthermore, the protrusion is cylindrical.

[0021] The second purpose of this utility model is achieved by the following technical solution:

[0022] A refrigerator comprises the adjustable multi-joint hinge.

[0023] Compared with the existing technology, the adjustable multi-joint hinge of the utility model has the following advantages:

[0024] Since the above-mentioned adjustable multi-joint hinge is provided with an adjustable fixing seat, when there is a deviation between the actual installation position of the door body and the preset installation position, the adjusting part can be rotated to drive the slide to move back and forth along the sliding hole through the cooperation of the two protrusions and the spiral teeth to adjust the position of the door body, thereby straightening the door body and making the door body fit more closely with the cabinet body.

[0025] In addition, the two fixed seats of the above-mentioned adjustable multi-joint hinge are both adjustable fixed seats, and the length directions of the sliding holes of the two fixed seats are perpendicular to each other. Therefore, when in use, the door body can be moved along two mutually perpendicular directions, thereby being able to meet the adjustment needs of the door body position in various situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional schematic diagram of an adjustable multi-joint hinge according to a preferred embodiment of the present invention;

[0027] Figure 2 for Figure 1A structural diagram of the adjustable multi-joint hinge from another perspective;

[0028] Figure 3 for Figure 2 Partial structural exploded diagram;

[0029] Figure 4 for Figure 2 A structural diagram from another perspective;

[0030] Figure 5 for Figure 4 A structural diagram of the adjusting member of the cabinet fixing seat in the adjustable multi-joint hinge shown;

[0031] Figure 6 for Figure 1 The main view;

[0032] Figure 7 for Figure 6 Sectional view along line AA;

[0033] Figure 8 for Figure 4 A top view of

[0034] Figure 9 for Figure 8 Cross-sectional view along line DD;

[0035] Figure 10 for Figure 1 The structure diagram of the adjustable multi-joint hinge shown in another perspective;

[0036] Figure 11 for Figure 10 Partial structural exploded diagram;

[0037] Figure 12 for Figure 11 A structural diagram of the adjustment member of the middle door body fixing seat from another perspective;

[0038] Figure 13 for Figure 6 Cross-sectional view of part of the structure along line BB;

[0039] Figure 14 for Figure 6 Cross-sectional view of part of the structure along line CC;

[0040] Figure 15 for Figure 10 A structural diagram of the adjustable multi-joint hinge in another use state;

[0041] In the figure: 100, adjustable multi-joint hinge; 10, fixing seat; 11, cabinet fixing seat; 112, 131, seat body; 1121, bottom side; 1123, extension side; 1125, receiving groove; 1126, rivet hole; 1127, guide hole; 1128, first rotation hole; 113, 132, adjusting member; 1130, 1320, spiral tooth; 1131, 1321, first end; 1132, 1322, second end; 1134, 1324, head; 1135, 1325, shaft; 1136, 1326, connecting section; 1137, 1327, fixing Segment; 1138, 1328, sink; 114, 134, slide; 1141, 1343, sliding hole; 1142, 1344, protrusion; 1143, guide hole; 1145, fixing hole; 1146, flange; 115, retaining member; 1151, rivet head; 1152, rivet rod; 13, door body fixing seat; 1311, mounting hole; 1312, second rotating hole; 1341, bottom plate; 1342, side plate; 1345, sliding hole; 30, transmission assembly; 31, first connecting member; 32, second connecting member; 33, third connecting member; 34, fourth connecting member. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] See Figure 1 A preferred embodiment of the present invention provides an adjustable multi-joint hinge 100, comprising two fixing bases 10 and a transmission assembly 30 rotatably connected to the two fixing bases 10. Specifically, the adjustable multi-joint hinge 100 can be used in a refrigerator. One of the two fixing bases 10 is a cabinet fixing base 11 for fixing to the refrigerator cabinet (not shown); the other is a door fixing base 13 for fixing to the refrigerator door (not shown).

[0046] Please also see Figures 2 to 9 In this embodiment, the cabinet fixing seat 11 is an adjustable fixing seat, including a seat body 112, an adjusting member 113 and a slide 114. The adjusting member 113 is rotatably connected to the seat body 112, and the slide 114 is slidably connected to the seat body 112 and can be slidably mounted on the adjusting member 113.

[0047] In this embodiment, the base 112 of the cabinet fixing base 11 includes a bottom side 1121 and a pair of extension sides 1123 extending perpendicularly from either side of the bottom side 1121 toward the transmission assembly 30. The bottom side 1121 and the extension sides 1123 surround a receiving slot 1125. A retaining member 115 is secured to the base 112 of the cabinet fixing base 11. In this embodiment, a rivet hole 1126 is defined in the bottom side 1121. The retaining member 115 is a rivet, comprising a rivet head 1151 and a rivet rod 1152 fixedly connected to the rivet head 1151. The rivet rod 1152 is riveted to the rivet hole 1126 in the base 112 of the cabinet fixing base 11. An elongated guide hole 1127 is further defined on the bottom side 1121 of the base 112 of the cabinet fixing base 11 . The guide hole 1127 and the riveting hole 1126 are spaced apart along the length direction of the receiving groove 1125 .

[0048] In this embodiment, the adjustment member 113 of the cabinet fixing seat 11 is arranged between the guide hole 1127 and the rivet hole 1126. The adjustment member 113 is provided with a spiral tooth 1130. Specifically, the adjustment member 113 includes a head 1134 and a shaft 1135 fixedly connected to the head 1134. In this embodiment, the head 1134 is received in the receiving groove 1125. The end surface of the head 1134 facing away from the shaft 1135 is provided with a recessed groove 1138 for cooperating with a screwdriver to facilitate the rotation of the adjustment member 113. In this embodiment, the recessed groove 1138 is a cross recessed groove. It is understood that in other embodiments, it can also be a recessed groove of other shapes, such as a straight recessed groove, as long as it can be used with a screwdriver in the prior art. The shaft 1135 of the adjustment member 113 is rotatably connected to the bottom side 1121 of the seat body 112. In this embodiment, the shaft 1135 includes a connecting section 1136 and a fixed section 1137. The head 1134, the connecting section 1136 and the fixed section 1137 are fixedly connected in sequence, and the diameters of the head 1134, the connecting section 1136 and the fixed section 1137 decrease in sequence. The fixed section 1137 is rotatably connected to the bottom side 1121 of the base body 112. Specifically, a first rotating hole 1128 is provided on the bottom side 1121 corresponding to the shaft 1135, and the first rotating hole 1128 is located between the guide hole 1127 and the rivet hole 1126; the fixed section 1137 of the shaft 1135 is rotatably installed in the first rotating hole 1128. The helical teeth 1130 are arranged on the head 1134; in this embodiment, the helical teeth 1130 and the shaft 1135 are both arranged on the end surface of the head 1134 facing the bottom side 1121, the helical teeth 1130 extend along the circumference of the shaft 1135, and the helical teeth 1130 have a first end 1131 and a second end 1132 spaced apart along its extension direction, and from the first end 1131 to the second end 1132, the distance from the helical teeth 1130 to the center of the shaft 1135 gradually decreases.

[0049] The slide 114 is slidably connected to the base 112. In this embodiment, the slide 114 of the cabinet fixing base 11 is generally plate-shaped and slidably mounted within the receiving slot 1125. The receiving slot 1125 guides the sliding movement of the slide 114. The slide 114 is provided with an elongated sliding hole 1141, the length of which is parallel to the length of the guide hole 1127. The slide 114 is slidably mounted on the connecting section 1136 of the adjusting member 113 through the sliding hole 1141, so that the connecting section 1136 slides through the sliding hole 1141. Two protrusions 1142 are spaced apart on the slide 1144. The protrusions 1142 are positioned adjacent to the sliding hole 1141 and slide in contact with opposite side surfaces of the helical teeth 1130. When the adjusting member 113 rotates forward and reverse, the two protrusions 1142 can respectively cooperate with the helical teeth 1130 to drive the slide 114 to move back and forth along the sliding hole 1141. In this embodiment, the protrusions 1142 are generally cylindrical to reduce friction between the protrusions 1142 and the helical teeth 1130, thereby reducing wear on the protrusions 1142 and the helical teeth 1130 during movement and increasing the service life of the adjustable multi-joint hinge 100.

[0050] In this embodiment, the slide 114 of the cabinet fixing base 11 is further provided with an elongated guide hole 1143. The length direction of the guide hole 1143 is parallel to the length direction of the sliding hole 1141 of the cabinet fixing base 11. The rivet rod 1152 of the retaining member 115 slides through the guide hole 1143, and the rivet head 1151 of the retaining member 115 is received in the receiving groove 1125 and can abut against the slide 114. The cooperation between the retaining member 115 and the guide hole 1143 can further guide the movement of the slide 114.

[0051] In this embodiment, the slide 114 is provided with a fixing hole 1145, which is located on opposite sides of the slide hole 1141 from the guide hole 1143. The fixing hole 1145 is used to receive rivets or screws to securely connect the slide 114 to the cabinet. A flange 1146 is formed on one end of the fixing hole 1145 facing the bottom side 1121 of the base 112. The flange 1146 is disposed around the periphery of the fixing hole 1145 and is slidably inserted into the guide hole 1127. The cooperation between the flange 1146 and the guide hole 1127 further guides the movement of the slide 114.

[0052] Please also see Figure 10 and Figure 11In this embodiment, the door body fixing seat 13 is also an adjustable fixing seat, and its structure is roughly the same as that of the cabinet body fixing seat 11, both including a seat body 131, an adjusting member 132 and a slide 134, wherein the seat body 131 is used to be fixedly connected to the door body, the adjusting member 132 is rotatably connected to the seat body 131, and the slide 134 is slidably connected to the seat body 131 and can be slidably mounted on the adjusting member 132.

[0053] In this embodiment, the base 131 of the door body fixing base 13 is generally plate-shaped and is provided with mounting holes 1311. The mounting holes 1311 are used to mount fixing members (not shown) that are fixedly connected to the door body. In this embodiment, a plurality of mounting holes 1311 are provided at intervals on the door body fixing base 13. The fixing members may be rivets, screws, etc.

[0054] Please also see Figure 12 and Figure 14 The structure of the adjusting member 132 of the door body fixing seat 13 is the same as that of the adjusting member 113 of the cabinet body fixing seat 11, and is provided with a spiral tooth 1320. Specifically, the adjusting member 132 includes a head 1324 and a shaft 1325 fixedly connected to the head 1324. In this embodiment, the head 1324 is provided on the side of the corresponding seat 131 facing the cabinet body fixing seat 11, and the end surface of the head 1324 facing away from the shaft 1325 is provided with a groove 1328 for cooperating with a screwdriver to facilitate the rotation of the adjusting member 132. In this embodiment, the groove 1328 is a cross groove. It can be understood that in other embodiments, it can also be a groove of other shapes, for example, a straight groove, etc., as long as it can be used with the screwdriver of the prior art. The shaft 1325 of the adjusting member 132 is rotatably connected to the seat body 131. In this embodiment, the shaft 1325 includes a connecting section 1326 and a fixed section 1327. The head 1324, the connecting section 1326 and the fixed section 1327 are fixedly connected in sequence, and the diameters of the head 1324, the connecting section 1326 and the fixed section 1327 decrease in sequence. The fixed section 1327 is rotatably connected to the seat body 131. Specifically, the seat body 131 is provided with a second rotating hole 1312 corresponding to the shaft 1325, and the fixed section 1327 of the shaft 1325 is rotatably installed in the second rotating hole 1312. The helical teeth 1320 are arranged on the head 1324; in this embodiment, the helical teeth 1320 and the shaft 1325 are both arranged on the end surface of the head 1324 facing the seat body 131, the helical teeth 1320 extend along the circumference of the shaft 1325, and the helical teeth 1320 have a first end 1321 and a second end 1322 arranged at intervals along its extension direction, and from the first end 1321 to the second end 1322, the distance from the helical teeth 1320 to the center of the shaft 1325 gradually decreases.

[0055] The slide 134 of the door body fixing seat 13 is slidably connected to the corresponding seat 131. In this embodiment, the slide 134 of the door body fixing seat 13 includes a base plate 1341 and a pair of side plates 1342 extending perpendicularly from both sides of the base plate 1341 toward the transmission assembly 30. The base plate 1341 is slidably connected to the seat 131. The base plate 1341 of the slide 134 of the door body fixing seat 13 is provided with a sliding hole 1343, and the length direction of the sliding hole 1343 on the door body fixing seat 13 is perpendicular to the length direction of the sliding hole 1141 on the cabinet fixing seat 11. The slide 134 of the door body fixing seat 13 is slidably mounted on the connecting section 1326 of the corresponding adjusting member 132 through the corresponding sliding hole 1343, so that the connecting section 1326 slides through the sliding hole 1343. Two protrusions 1344 are spaced apart on the slide 134 of the door body fixing seat 13. These protrusions 1344 are positioned adjacent to the sliding hole 1343 and slide in contact with opposing side surfaces of the helical teeth 1320. When the adjusting member 132 rotates forward or reverse, the two protrusions 1344 engage with the helical teeth 1320 to drive the slide 134 to reciprocate along the sliding hole 1343. In this embodiment, the protrusions 1344 are generally cylindrical in shape to reduce friction between the protrusions 1344 and the helical teeth 1320, thereby alleviating wear on the protrusions 1344 and the helical teeth 1320 during movement and thereby increasing the service life of the adjustable multi-joint hinge 100.

[0056] In this embodiment, an elongated sliding hole 1345 is provided on the bottom plate 1341 of the slide 134 of the door body fixing seat 13, corresponding to at least one mounting hole 1311. The length direction of the sliding hole 1345 is parallel to the length direction of the sliding hole 1343 of the door body fixing seat 13. The fixing member installed at the mounting hole 1311 can slide through the corresponding sliding hole 1345 to better guide the movement of the slide 134.

[0057] Please see again Figure 6The transmission assembly 30 is rotatably connected to the base 112 of the cabinet fixing base 11 and the slide 134 of the door fixing base 13. In this embodiment, one end of the transmission assembly 30 is rotatably connected to the pair of extended sides 1123 of the base 112 of the cabinet fixing base 11, and the other end of the transmission assembly 30 is rotatably connected to the pair of side plates 1342 of the slide 134 of the door fixing base 13. The structure of the transmission assembly 30 of this embodiment belongs to the prior art and includes a first connecting member 31, a second connecting member 32, a third connecting member 33, and a fourth connecting member 34. One end of the first connecting member 31 is received in the receiving groove 1125 and is pivotally connected to a pair of extended sides 1123 of the cabinet fixing seat 11, and the other end of the first connecting member 31 is pivotally connected to the second connecting member 32; the two ends of the second connecting member 32 are respectively pivotally connected to the first connecting member 31 and a pair of side plates 1342 of the slide 134 of the door fixing seat 13; the two ends of the third connecting member 33 are respectively pivotally connected to the first connecting member 31 and a pair of side plates 1342 of the slide 134 of the door fixing seat 13; and the two ends of the fourth connecting member 34 are respectively pivotally connected to a pair of extended sides 1123 of the base 112 of the cabinet fixing seat 11 and the third connecting member 33. It is understood that the transmission assembly 30 can also adopt transmission assemblies of other structures in the prior art. The adjustable multi-joint hinge 100 may also include other structures, for example, an elastic component that applies a closing force to the door body so that the door body closes automatically, etc., which will not be described here for the sake of space.

[0058] The utility model also provides a refrigerator, which includes the adjustable multi-joint hinge 100.

[0059] When the adjustable multi-joint hinge 100 is installed, the slide 114 of the cabinet fixing seat 11 is fixedly connected to the cabinet, and the base 112 of the door fixing seat 13 is fixedly connected to the door. After the adjustable multi-joint hinge 100 is installed, if the position of the door body deviates, the adjusting piece 113 on the cabinet fixing seat 11 can be screwed with a screwdriver according to the offset direction of the door body, so that the slide 114 of the cabinet fixing seat 11 moves relative to the seat body 112 of the cabinet fixing seat 11 along the corresponding sliding hole 1141, thereby driving the door body to move relative to the cabinet along the length direction of the sliding hole 1141 of the cabinet fixing seat 11; and / or the adjusting piece 132 on the door fixing seat 13 can be screwed with a screwdriver, so that the slide 134 of the door fixing seat 13 moves relative to the seat body 131 of the door fixing seat 13 along the corresponding sliding hole 1343, thereby driving the door body to move relative to the cabinet along the length direction of the sliding hole 1343 of the door fixing seat 13, and then straightening the door body.

[0060] Since the above-mentioned adjustable multi-joint hinge 100 is provided with an adjustable fixing seat, when there is a deviation between the actual installation position of the door body and the preset installation position, the adjusting parts 113 and 132 on the adjustable fixing seat can be rotated, and the two protrusions 1142 and 1344 can cooperate with the spiral teeth 1130 and 1320 to drive the slides 114 and 134 to move back and forth along the sliding holes 1141 and 1343 to adjust the position of the door body, thereby straightening the door body and making the door body fit more closely with the cabinet body.

[0061] In addition, the two fixed seats 10 of the above-mentioned adjustable multi-joint hinge 100 are both adjustable fixed seats, and the length directions of the sliding holes 1141 and 1343 of the two fixed seats 10 are perpendicular to each other. Therefore, when in use, the door body can be moved along two mutually perpendicular directions, thereby being able to meet the adjustment needs of the door body position in various situations.

[0062] The above embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art will be able to make various modifications and improvements without departing from the spirit of the present invention. These modifications and improvements are equivalent to those made to the above embodiments based on the essential technology of the present invention and fall within the scope of protection of the present invention.

Claims

1. An adjustable multi-joint hinge comprising two fixed bases and a transmission assembly rotatably connected to the two fixed bases, characterized in that: At least one of the fixed seats is an adjustable fixed seat, and the adjustable fixed seat includes a seat body, an adjusting member and a slide, the adjusting member is rotatably connected to the seat body, and the adjusting member is provided with helical teeth; the slide is slidably connected to the seat body, and a sliding hole is provided on the slide, and the slide is slidably mounted on the adjusting member through the sliding hole, and two protrusions are provided on the slide at intervals, and the two protrusions are respectively in sliding contact with the opposite side surfaces of the helical teeth; the transmission assembly is rotatably connected to the seat body or the slide of the adjustable fixed seat; when the adjusting member is forward and reversed, the two protrusions can respectively cooperate with the helical teeth to drive the slide to move back and forth along the sliding hole.

2. The adjustable multi-joint hinge according to claim 1, characterized in that: The adjusting member includes a head and a shaft fixedly connected to the head. The shaft slidably passes through the sliding hole and is rotatably connected to the seat body. The helical teeth are provided on the head.

3. The adjustable multi-joint hinge according to claim 2, characterized in that: The helical teeth and the shaft are arranged on the same end surface of the head, and the helical teeth extend along the circumference of the shaft.

4. The adjustable multi-joint hinge according to claim 3, characterized in that: The helical tooth has a first end and a second end that are opposite to and spaced apart from each other along an extending direction of the helical tooth, and a distance from the helical tooth to the center of the shaft gradually decreases from the first end to the second end.

5. The adjustable multi-joint hinge according to claim 2, characterized in that: The end surface of the head facing away from the shaft is provided with a recessed groove for cooperating with a screwdriver.

6. The adjustable multi-joint hinge according to claim 2, characterized in that: The shaft includes a connecting section and a fixed section, the head, the connecting section and the fixed section are fixedly connected in sequence, and the diameters of the head, the connecting section and the fixed section decrease in sequence; the connecting section slides through the sliding hole, and the fixed section is rotatably connected to the seat body.

7. The adjustable multi-joint hinge according to claim 1, characterized in that: The two fixing seats are both adjustable fixing seats, and the length directions of the sliding holes of the two fixing seats are perpendicular to each other.

8. The adjustable multi-joint hinge according to claim 7, characterized in that: One of the two fixing seats is a cabinet fixing seat, and the other is a door fixing seat. The transmission assembly is rotatably connected to the seat body of the cabinet fixing seat and the slide of the door fixing seat.

9. The adjustable multi-joint hinge according to claim 8, characterized in that: A guide hole is provided on the slide platform of the cabinet fixing seat, and the length direction of the guide hole is parallel to the length direction of the sliding hole of the cabinet fixing seat; a retaining member is fixed on the seat body of the cabinet fixing seat, and the retaining member is slidably inserted into the guide hole.

10. The adjustable multi-joint hinge according to claim 9, characterized in that: The retaining member is a rivet, which includes a rivet head and a rivet rod fixedly connected to the rivet head. The rivet rod slides through the guide hole to be riveted to the seat body of the cabinet fixing seat, and the rivet head can abut against the slide.

11. The adjustable multi-joint hinge according to claim 8, wherein: A guide hole is provided on the seat body of the cabinet fixing seat, and the length direction of the guide hole is parallel to the length direction of the sliding hole of the cabinet fixing seat; a fixing hole is provided on the sliding platform, and a flange is formed on one end of the fixing hole facing the corresponding seat body, and the flange is arranged around the periphery of the fixing hole and is slidably inserted into the guide hole.

12. The adjustable multi-joint hinge according to claim 8, wherein: The base body of the cabinet fixing base includes a bottom side and a pair of extension sides extending vertically from both sides of the bottom side toward the transmission component. The bottom side and the extension sides form a receiving groove. The slide is slidably installed in the receiving groove. The adjustment member of the cabinet fixing base is rotatably connected to the bottom side; the transmission component is rotatably connected to the pair of extension sides.

13. The adjustable multi-joint hinge according to claim 8, wherein: The sliding platform of the door body fixing seat is provided with a sliding hole, and the length direction of the sliding hole is parallel to the length direction of the sliding hole of the door body fixing seat; the seat body of the door body fixing seat is provided with a plurality of mounting holes, and the mounting holes are provided with fixing parts for fixed connection with the door body, and at least one of the fixing parts can be slidably inserted into the sliding hole.

14. The adjustable multi-joint hinge according to claim 8, wherein: The slide of the door body fixing seat includes a base plate and a pair of side plates extending vertically from both sides of the base plate toward the transmission assembly. The base plate is slidingly connected to the seat body of the door body fixing seat. The sliding hole of the door body fixing seat is provided on the base plate. The transmission assembly is rotatably connected to the pair of side plates.

15. The adjustable multi-joint hinge according to claim 1, wherein: The protrusion is cylindrical.

16. A refrigerator, characterized in that: The invention comprises an adjustable multi-joint hinge according to any one of claims 1 to 15.

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