Automatic return hinge for freezer door body

Abstract

The utility model discloses an automatic return hinge for a freezer door body, and belongs to the technical field of matching parts of refrigeration equipment. Which comprises a shell, a shell cavity with an upward opening is formed in the shell, and is characterized in that a door shaft connecting piece, a rotating shaft piece detachably connected with the door shaft connecting piece, a hinge seat matched with the inclined surface of the rotating shaft piece, a reset spring and a blocking seat fixed with the shell are sequentially arranged in the shell cavity from bottom to top; an embedding hole is formed in the upper end of the door shaft connecting piece, and an embedding block matched with the embedding hole in an embedded mode is formed at the lower end of the rotating shaft piece. The door shaft connecting piece has the advantages that the rotating shaft piece and the hinge seat can be replaced without dismounting the door shaft connecting piece, the efficiency is high, and the replacement difficulty and the use cost are effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment supporting components, and particularly relates to an automatic return hinge for a refrigerator door. Background Art

[0002] Freezers are common refrigeration equipment in people's daily lives. Freezers are usually composed of a cabinet body, a door body, and an internal refrigeration mechanism. The cabinet body and the door body are responsible for maintaining the temperature, and the refrigeration mechanism is responsible for cooling. When the temperature inside the cabinet is lower than the set temperature, the refrigeration mechanism works. In order to save energy, reducing the working time of the refrigeration mechanism is the most effective method. To reduce the working time of the refrigeration mechanism, it is necessary to avoid the loss of temperature inside the cabinet as much as possible. However, when storing and retrieving items from the freezer, the door body must be opened, and opening the door body means temperature loss. In order to avoid the door body being open for a long time and forgetting to close the door, most freezer doors will be installed with return hinges to make the door body close automatically. The return hinge generally adopts a structure of inclined plane matching between the rotating shaft and the hinge seat and a spring reset. The inclined plane is very easy to wear after a long period of friction, causing the return hinge to fail. In addition, the rotating shaft needs to be connected to the door shaft, so it is difficult to remove and the replacement operation is cumbersome.

[0003] In the existing technology, such as the "Automatic Closing Structure of a Large Refrigerator Door" disclosed in China Utility Model Authorization Announcement No. CN200968758Y, it includes a connecting member and a hinge shaft, the hinge shaft is connected to the connecting member, and the automatic closing structure of the door is arranged above and / or below the door body, the connecting member has a first supporting wall with a through hole in the center and a second supporting wall of a rectangular structure, a hinge shaft is arranged in the through hole, one end of the hinge shaft passes through the through hole, and the other end of the hinge shaft is sequentially connected to the hinge and the spring, and finally positioned and fixed by a spring plug at one end of the spring; this technical solution has the defects mentioned above.

[0004] In view of the above situation, it is necessary to design an automatic return hinge for a refrigerator door that has a simple structure, low replacement cost, and easy removal of wear parts. To this end, the applicant has made a useful design, and the technical solution to be introduced below was produced in this context. Utility Model Content

[0005] The task of the utility model is to provide an automatic return hinge for a freezer door, which helps to improve the rotating shaft structure so that the connecting end and the friction end of the rotating shaft and the door shaft can be detachably connected and easy to disassemble and assemble, which is conducive to reducing the difficulty of replacement and the cost of use.

[0006] The task of the present utility model is accomplished in this way: an automatic return hinge for a refrigerator door comprises a shell, a shell cavity with an upward opening is formed in the shell, and the characteristics are: a door shaft connecting member, a rotating shaft member detachably connected to the door shaft connecting member, a hinge seat matched with the inclined surface of the rotating shaft member, a return spring and a stop seat fixed to the shell are sequentially arranged in the shell cavity from bottom to top, the upper end of the door shaft connecting member is formed with an embedding hole, and the lower end of the rotating shaft member is formed with an embedded block matched with the embedding hole.

[0007] In a specific embodiment of the present invention, a mounting plate is integrally formed on one side of the lower end of the shell, a mounting hole is provided on the mounting plate, and two side surfaces of the upper end of the shell are respectively provided with oppositely arranged baffle insertion holes, and a baffle is provided between the two baffle insertion holes; a baffle embedding groove is provided above the baffle seat, the middle part of the baffle embedding groove is formed with an upward protrusion, and the middle part of the baffle is provided with a protrusion hole that cooperates with the protrusion.

[0008] In another specific embodiment of the present invention, a pair of sliding grooves are formed on the inner wall of the shell cavity along the height direction, and the hinged seat and the block seat are respectively formed with a hinged seat limiting slider and a block seat slider at the positions corresponding to the sliding grooves. The hinged seat slides up and down in the sliding groove along the height direction of the shell cavity through the hinged seat limiting slider, and the block seat slides up and down in the sliding groove along the height direction of the shell cavity through the block seat slider. A door shaft clearance hole is provided in the middle of the bottom of the shell cavity, and a door shaft square hole is provided at the lower end of the door shaft connecting piece at the position corresponding to the door shaft clearance hole.

[0009] In another specific embodiment of the present invention, the upper end of the door hinge connector is formed with a door hinge connector boss at a position around the edge of the embedding hole, and the rotating shaft is formed with a guide protrusion at a position of the embedding block corresponding to the door hinge connector boss. The guide protrusion has a mating surface formed on the side facing the door hinge connector boss that fits with the door hinge connector boss, and the lower end of the hinge seat is formed with an inclined surface that fits with the guide protrusion.

[0010] In another specific embodiment of the present invention, a rotating shaft is formed upwardly in the middle of the rotating shaft, and an axial hole for sleeve connection with the rotating shaft passes through the middle of the hinge seat.

[0011] In another specific embodiment of the present invention, the upper end of the hinged seat is formed with a spring abutment surface, the lower end of the return spring abuts against the spring abutment surface, and the upper end of the return spring abuts against the lower end surface of the block seat.

[0012] In a further specific embodiment of the present invention, the shell cavity is a cylindrical cavity structure.

[0013] In a more specific embodiment of the present invention, the door axis connector and the rotating shaft are formed into a cylindrical structure that fits the shell cavity.

[0014] After adopting the above structure, the utility model has the beneficial effect: since the door axis connecting part and the rotating shaft part adopt a split and detachable connection structure, the door axis connecting part can replace the rotating shaft part and the hinge seat without dismantling, which is not only efficient but also effectively reduces the difficulty of replacement and the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the matching structure of the door shaft connector, the rotating shaft and the hinge seat in one embodiment of the present invention.

[0017] In the figure: 1. Shell, 11. Shell cavity, 111. Slide groove, 112. Door shaft clearance hole, 12. Mounting plate, 121. Mounting hole, 13. Baffle insert hole, 14. Baffle, 141. Bump hole; 2. Door shaft connector, 21. Embedded hole, 22. Door shaft connector boss, 23. Door shaft square hole; 3. Rotating shaft, 31. Embedded block, 32. Rotating shaft, 33. Guide bump, 34. Mating surface; 4. Articulated seat, 41. Shaft hole, 42. Inclined surface, 43. Articulated seat limit slider, 44. Spring abutment surface; 5. Return spring; 6. Baffle seat, 61. Baffle embedded groove, 611. Bump, 62. Baffle seat slider. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the description of the embodiments does not limit the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as within the scope of protection of the present invention.

[0019] In the following description, all concepts related to directionality or orientation, such as up, down, left, right, front and back, are based on Figure 1 The positions shown are for reference only and should not be understood as a special limitation on the technical solution provided by the present invention.

[0020] See also Figure 1, specifically relates to an automatic return hinge for a refrigerator door, comprising a shell 1, wherein the shell 1 comprises a shell cavity 11 with an upward opening. The technical innovation of the present invention lies in that a door shaft connecting member 2, a rotating shaft member 3 detachably connected to the door shaft connecting member 2, a hinge seat 4 with an inclined surface matching the rotating shaft member 3, a return spring 5 and a stopper 6 fixed to the shell 1 are sequentially arranged in the shell cavity 11 from bottom to top, the upper end of the door shaft connecting member 2 comprises an embedding hole 21, and the lower end of the rotating shaft member 3 comprises an embedding block 31 matching the embedding hole 21.

[0021] Furthermore, a mounting plate 12 is integrally formed on one side of the lower end of the aforementioned shell 1, and a mounting hole 121 is provided on the aforementioned mounting plate 12. A baffle insertion hole 13 is provided on both side surfaces of the upper end of the aforementioned shell 1, and a baffle 14 is provided between the two baffle insertion holes 13; a baffle embedding groove 61 is provided above the aforementioned baffle seat 6, and an upward protrusion 611 is formed in the middle of the aforementioned baffle embedding groove 61, and a protrusion hole 141 is provided in the middle of the aforementioned baffle 14 to cooperate with the protrusion 611.

[0022] Furthermore, a pair of slide grooves 111 are respectively formed on the inner wall of the aforementioned shell cavity 11 along the height direction, and the aforementioned hinged seat 4 and the block seat 6 are respectively formed with a hinged seat limiting slider 43 and a block seat slider 62 at the positions corresponding to the slide grooves 111. The aforementioned hinged seat 4 slides up and down in the slide groove 111 along the height direction of the shell cavity 11 through the hinged seat limiting slider 43, and the aforementioned block seat 6 slides up and down in the slide groove 111 along the height direction of the shell cavity 11 through the block seat slider 62. A door shaft clearance hole 112 is provided in the middle of the bottom of the aforementioned shell cavity 11, and a door shaft square hole 23 is provided at the lower end of the aforementioned door shaft connecting member 2 at the position corresponding to the door shaft clearance hole 112.

[0023] In this embodiment, the upper end of the aforementioned hinge seat 4 is formed with a spring abutment surface 44, the lower end of the aforementioned return spring 5 abuts on the spring abutment surface 44, and the upper end of the return spring 5 abuts on the lower end surface of the block seat 6.

[0024] Furthermore, the aforementioned shell cavity 11 is a cylindrical cavity structure; the aforementioned door axis connector 2 and the rotating shaft 3 constitute a cylindrical structure that fits the shell cavity 11.

[0025] See also Figure 2The upper end of the aforementioned door shaft connector 2 is formed with a door shaft connector boss 22 at a position surrounding the edge of the embedding hole 21. The aforementioned rotating shaft member 3 is formed with a guide protrusion 33 at a position corresponding to the door shaft connector boss 22 on the embedding block 31. The aforementioned guide protrusion 33 has a mating surface 34 formed on the side facing the door shaft connector boss 22, which is matched with the door shaft connector boss 22. The lower end of the aforementioned hinge seat 4 is formed with an inclined surface 42 that cooperates with the guide protrusion 33. The middle part of the aforementioned rotating shaft member 3 is formed with a rotating shaft 32, and the middle part of the aforementioned hinge seat 4 is penetrated by an axis hole 41 that is sleeved with the rotating shaft 32.

[0026] Please continue reading Figure 1 and combined Figure 2 When the return hinge is actually used, the housing 1 is placed inside the door of the refrigerator and fixedly connected by fasteners through the mounting holes 121 on the mounting plate 12. The door shaft of the refrigerator passes through the aforementioned door shaft clearance hole 112 and is fixed in the door shaft square hole 23. When the door is opened and rotated, the housing 1 and the hinge seat 4 rotate with the rotation of the door. The hinge seat 4 slides along the guide boss 33 via the inclined surface 42, and the hinge seat 4 moves upward and compresses the return spring 5. When the door is forgotten to be closed, the return spring 5 pushes the hinge seat 4 downward. During the downward displacement process, the hinge seat 4 rotates due to the sliding cooperation between the inclined surface 42 and the guide boss 33, and the hinge seat 4 drives the housing 1 and the door to rotate to the closed state. When, after a period of use, the door shaft connector 2 and the rotating shaft 3 become worn and need to be replaced, just take out the shell 1, remove the baffle 14 and pull out the baffle seat 6, the return spring 5 and the hinge seat 4 in turn, and then take out the rotating shaft 3 embedded in the door shaft connector 2. Only the worn hinge seat 4 and the rotating shaft 3 need to be replaced so that the return hinge can continue to be used, without having to replace the entire hinge or remove the door shaft connector 2 from the door shaft. It has the advantages of convenient disassembly and replacement, high efficiency and low cost.

Claims

1. An automatic return hinge for a refrigerator door, comprising a housing (1), wherein the housing (1) has a housing cavity (11) with an upward opening, characterized in that: The shell cavity (11) is provided with a door shaft connecting part (2), a rotating shaft part (3) detachably connected to the door shaft connecting part (2), a hinge seat (4) matched with the inclined surface of the rotating shaft part (3), a return spring (5) and a stop seat (6) fixed to the shell (1) from bottom to top. The upper end of the door shaft connecting part (2) is formed with an embedding hole (21), and the lower end of the rotating shaft part (3) is formed with an embedding block (31) matched with the embedding hole (21).

2. The automatic return hinge for a refrigerator door according to claim 1, characterized in that: A mounting plate (12) is integrally formed on one side of the lower end of the shell (1), and a mounting hole (121) is provided on the mounting plate (12). Two side surfaces of the upper end of the shell (1) are respectively provided with a blocking piece insertion hole (13) arranged opposite to each other, and a blocking piece (14) is provided between the two blocking piece insertion holes (13); a blocking piece embedding groove (61) is provided above the blocking seat (6), and an upward convex point (611) is formed in the middle of the blocking piece embedding groove (61), and a convex point hole (141) is provided in the middle of the blocking piece (14) to cooperate with the convex point (611).

3. The automatic return hinge for a refrigerator door according to claim 1, characterized in that: A pair of slide grooves (111) are formed on the inner wall of the shell cavity (11) along the height direction, and the hinge seat (4) and the blocking seat (6) are respectively formed with a hinge seat limiting slider (43) and a blocking seat slider (62) at positions corresponding to the slide grooves (111). The hinge seat (4) slides up and down in the slide groove (111) along the height direction of the shell cavity (11) through the hinge seat limiting slider (43), and the blocking seat (6) slides up and down in the slide groove (111) along the height direction of the shell cavity (11) through the blocking seat slider (62). A door shaft clearance hole (112) is provided in the middle of the bottom of the shell cavity (11), and a door shaft square hole (23) is provided at the lower end of the door shaft connecting member (2) at a position corresponding to the door shaft clearance hole (112).

4. The automatic return hinge for a refrigerator door according to claim 1, characterized in that: The upper end of the door-axis connecting member (2) is formed with a door-axis connecting member boss (22) at a position around the edge of the embedding hole (21), and the rotating shaft (3) is formed with a guide protrusion (33) at a position of the embedding block (31) corresponding to the door-axis connecting member boss (22), and the guide protrusion (33) is formed with a mating surface (34) that fits with the door-axis connecting member boss (22) on the side facing the door-axis connecting member boss (22), and the lower end of the hinge seat (4) is formed with an inclined surface (42) that fits with the guide protrusion (33).

5. The automatic return hinge for a refrigerator door according to claim 1, characterized in that: A rotating shaft (32) is formed upwardly in the middle of the rotating shaft member (3), and an axial hole (41) sleeved with the rotating shaft (32) is passed through the middle of the hinge seat (4).

6. The automatic return hinge for a refrigerator door according to claim 1, characterized in that: The upper end of the hinge seat (4) is formed with a spring abutting surface (44), the lower end of the return spring (5) abuts against the spring abutting surface (44), and the upper end of the return spring (5) abuts against the lower end surface of the stop seat (6).

7. The automatic return hinge for a refrigerator door according to claim 1, characterized in that: The shell cavity (11) is a cylindrical cavity structure.

8. The automatic return hinge for a refrigerator door according to claim 7, characterized in that: The door shaft connecting member (2) and the rotating shaft member (3) are formed into a cylindrical structure that fits the shell cavity (11).

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