Vertical refrigerator
By combining a self-closing device and a hovering device with a pre-tightening component, the problem of reduced force on traditional refrigerator door hinges after prolonged use is solved, achieving automatic closing and hovering functions and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional self-closing door hinges lose strength after prolonged use, causing the freezer door to fail to close automatically, and existing self-closing freezers have high maintenance costs.
The cabinet door employs a self-closing device, a hovering device, and a pre-tensioning assembly, including a torsion spring, a torsion spring seat, a pre-tensioning assembly, and a limit stop to achieve automatic closing, hovering, and pre-tensioning functions.
It achieves self-closing and hovering of the cabinet door after opening, and restores the torsion spring force through the pre-tightening component. It has a simple structure, low cost, and is easy to use.
Smart Images
Figure CN224065728U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of refrigeration equipment technology, and in particular to a vertical freezer. Background Technology
[0002] Traditional self-closing door hinges only provide a spring-loaded action when opening and closing, without stopping the door after it opens. For hinges without this stopping function, one hand is needed to support the door to prevent it from closing, making it difficult to retrieve items. While some freezers now have self-closing functions, the closing force weakens after prolonged use, and they may even fail to close automatically, requiring replacement and repair, increasing operating costs. Summary of the Invention
[0003] In order to solve the above-mentioned technical problems, the purpose of this application is to provide a vertical freezer with self-closing function, hovering function and self-closing pre-tightening function.
[0004] To achieve the above objectives, this application adopts the following technical solution: a vertical freezer, comprising a cabinet body, a door hinge mechanism mounted on the cabinet body, and a cabinet door rotatably connected to one side of the cabinet body via the door hinge mechanism, wherein the door hinge mechanism comprises:
[0005] Door hinge seat, installed on the cabinet;
[0006] A self-closing door device includes a torsion spring, a torsion spring seat, and a pre-tensioning assembly. The torsion spring extends vertically through the cabinet door, with one end connected to the torsion spring seat and the other end fixedly connected to the cabinet door. The pre-tensioning assembly is connected between the torsion spring seat and the door hinge seat, and is configured to allow unidirectional rotation of the torsion spring seat.
[0007] A hovering device is connected between the door hinge seat and the cabinet door. The hovering device includes a limiting stop installed on the door hinge seat and a limiting plate fixed to the bottom of the cabinet door. The limiting plate is sleeved on the torsion spring seat. When the cabinet door rotates relative to the cabinet body to a hovering angle, at least a portion of the limiting stop is located on the rotation path of the limiting plate.
[0008] In the above technical solution, it is further preferred that the hovering angle is 80°-120°.
[0009] In the above technical solution, a further preferred embodiment is that the edge of the limiting plate has an inwardly recessed groove, and the limiting stop is engaged in the groove when the cabinet door is rotated to the hovering angle.
[0010] In the above technical solution, it is further preferred that the projection of the groove from top to bottom is an arc shape.
[0011] In the above technical solution, a further preferred embodiment is that the limiting plate has an edge curved surface that contacts the limiting stop during the rotation of the cabinet door, and a guide arc surface is connected between the edge curved surface and the groove. The guide arc surface protrudes outward and its projection from top to bottom is an arc shape.
[0012] In the above technical solution, a further preferred embodiment is that the hovering device further includes a transition wheel located on the lower side of the limiting plate and rotatably connected to the limiting plate, the transition wheel being coaxially arranged with the guide arc surface, and the radius of the transition wheel being larger than the radius of the guide arc surface.
[0013] In the above technical solution, a further preferred embodiment is that the limiting stop includes a hook-shaped first part, a second part extending in a straight line in the vertical direction, and an "L"-shaped third part. The first part is fixed on the door hinge seat, the third part is located above the door hinge seat and in contact with the limiting plate, the second part is connected between the first part and the third part, and the third part is capable of rotating and deforming relative to the first part around the axis of the second part.
[0014] In the above technical solution, it is further preferred that the limiting stop is an integrally molded part.
[0015] In the above technical solution, a further preferred embodiment is that the pretensioning assembly includes an upper pretensioning plate and a lower pretensioning plate arranged opposite each other. The top of the upper pretensioning plate is fixedly connected to the torsion spring seat, and the bottom of the upper pretensioning plate has a first toothed end. The lower pretensioning plate is fixedly installed on the door hinge seat, and the top of the lower pretensioning plate has a second toothed end. The first toothed end and the second toothed end engage unidirectionally. The upper pretensioning plate is configured to rotate unidirectionally relative to the lower pretensioning plate about the axis of the torsion spring.
[0016] In the above technical solution, a further preferred embodiment is that the lower preload plate has a through hole extending in the vertical direction in the middle, the first gear plate end has a limiting post that cooperates with the through hole in the middle, and the bottom of the limiting post has a threaded hole extending from bottom to top.
[0017] Compared with the prior art, this application achieves the following beneficial effects:
[0018] This application enables the cabinet door to automatically close after opening and to hover at an angle through a self-closing device and a hovering device. It can also tighten the loose torsion spring through a pre-tightening component to strengthen the pre-tightening force. The structure is simple, the cost is low, and the opening and closing of the door is convenient. Attached Figure Description
[0019] Figure 1 A three-dimensional structural diagram of a vertical freezer in a closed state, provided for an embodiment of this application;
[0020] Figure 2 for Figure 1 A three-dimensional structural diagram of the door hinge mechanism in the diagram;
[0021] Figure 3 for Figure 2 A three-dimensional exploded view of the door hinge mechanism;
[0022] Figure 4 for Figure 2 A top view of the gantry hinge mechanism;
[0023] Figure 5 for Figure 1 A three-dimensional structural diagram of a vertical freezer in the open position;
[0024] Figure 6 for Figure 5 A three-dimensional structural diagram of the door hinge mechanism in the diagram;
[0025] Figure 7 for Figure 6 A top view of the door hinge mechanism.
[0026] Among them; 100, cabinet body; 10, opening; 200, door hinge mechanism; 20, door hinge seat; 1, first part; 2, second part; 21, first limiting block; 9, third part; 30, self-closing door device; 3, torsion spring; 4, torsion spring seat; 5, pre-tightening assembly; 51, upper pre-tightening plate; 510, first gear end; 511, limiting post; 512, threaded hole; 52, lower pre-tightening plate; 520, second gear end; 521, through hole; 40, hovering device; 6, limiting stop; 61, first part; 62, second part; 63, third part; 7, limiting plate; 71, groove; 72, guide arc surface; 73, second limiting block; 74, edge curved surface; 8, transition wheel; 300, cabinet door. Detailed Implementation
[0027] To illustrate the technical content, structural features, achieved objectives, and effects of the application in detail, the technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.
[0028] This application provides a vertical freezer, such as... Figure 1 , 5 As shown, the upright freezer includes a cabinet body 100, a door hinge mechanism 200 mounted on the cabinet body 100, and a cabinet door 300 rotatably connected to one side of the cabinet body 100 via the door hinge mechanism 200. The cabinet body 100 has a refrigerated space for refrigerating items. The front end of the refrigerated space forms an opening 10 on the cabinet body 100 for taking refrigerated items in and out. Under the action of the door hinge mechanism 200, the cabinet door 300 rotates around an axis X1 located on one side of the opening 10, thereby enabling the opening 10 to be opened and closed.
[0029] like Figure 1 , 2 As shown, the door hinge mechanism 200 includes: a door hinge seat 20, a self-closing door device 30, and a hovering device 40. The door hinge seat 20 is mounted on the cabinet 100 and is located on the same side as the opening 10. The door hinge seat 20 includes a first part 1 and a second part 2 that are perpendicular to each other. The first part 1 is fixedly connected to the cabinet 100 by mechanical fasteners. The second part 2 is located on top of the first part 1 and extends in a horizontal direction. The door hinge seat 20 is a one-piece molded part.
[0030] like Figure 1 , 2 As shown in Figures 5 and 6, the self-closing device 30 is installed on the second part 2. The self-closing device 30 includes a torsion spring 3 and a torsion spring seat 4 installed on the second part 2. The torsion spring 3 extends vertically and passes through the cabinet door 300. One end of the torsion spring 3 is connected to the torsion spring seat 4, and the other end is fixedly connected to the cabinet door 300. The torsion spring 3 is rotatable around the axis X1. When an outward pulling force is applied to the cabinet door 300, the cabinet door 300 rotates outward relative to the cabinet body 100. At the same time, the torsion spring 3 deforms with the rotation of the cabinet door 300. When the external force applied to the cabinet door 300 is removed, the torsion spring 3 drives the cabinet door 300 to rotate inward through its own preload until the cabinet door 300 closes the opening 10, realizing the function of automatic closing.
[0031] After prolonged use, the torsion spring of the door hinge with self-closing function will loosen, reducing the self-closing force and even causing the cabinet door 300 to fail to close automatically. This results in cold air leaking out through the gap between the cabinet door and the cabinet body, wasting energy. Therefore, the self-closing device 30 of this application also includes a pre-tensioning component 5.
[0032] like Figure 2 , 3 As shown, the pretensioning assembly 5 includes an upper pretensioning plate 51 and a lower pretensioning plate 52 arranged opposite each other. The top of the upper pretensioning plate 51 is fixedly connected to the torsion spring seat 4, and the bottom of the upper pretensioning plate 51 has a first toothed end 510. The lower pretensioning plate 52 is fixedly mounted on the second plate 2, and the top of the lower pretensioning plate 52 has a second toothed end 520. The first toothed end 510 and the second toothed end 520 engage in one direction. The upper pretensioning plate 51 is configured to be able to rotate unidirectionally about the axis X1 relative to the lower pretensioning plate 52.
[0033] The lower pretensioning plate 52 has a through hole 521 extending vertically in the middle. The first gear end 510 has a limiting post 511 that mates with the through hole 521 in the middle. The bottom of the limiting post 511 has a threaded hole 512 extending upwards. The user can use a special adjustment tool to engage with the threaded hole 512 and then turn the upper pretensioning plate 51, thereby driving the torsion spring 3 to rotate and adjust the pretension force of the torsion spring 3. This pretensioning component 5 can tighten the torsion spring 3 when the cabinet door 300 is opened and closed for a long time, causing the torsion spring 3 to loosen, thereby increasing the pretension force of the torsion spring and restoring the closing force of the cabinet door 300. The structure is simple and the operation is convenient.
[0034] like Figure 5 , 6 As shown, the suspension device 40 is connected between the door hinge seat 20 and the cabinet door 300. It is used to stop the cabinet door 300 from rotating when the cabinet door 300 is opened to a suspension angle α, so as to keep the cabinet 100 open and make it convenient for customers to take out refrigerated items from the refrigerated space.
[0035] The hovering device 40 includes a limiting stop 6 mounted on the door hinge seat 20 and a limiting plate 7 fixed to the bottom of the cabinet door 300. The limiting plate 7 is sleeved on the torsion spring seat 4. When the cabinet door 300 rotates relative to the cabinet body 100 to the hovering angle α, at least a portion of the limiting stop 6 is located on the rotation path of the limiting plate 7, so that the cabinet door 300 will not rotate inward or outward without external force. In this embodiment, the hovering angle α is 80°-120°.
[0036] like Figure 2 , 4As shown in Figures 6 and 7, the edge of the limiting plate 7 has a recessed groove 71 facing the axis X1. The downward projection of the groove 71 is arc-shaped. The limiting stop 6 is engaged in the groove 71 when the cabinet door 300 rotates to the hovering angle α. The limiting plate 7 has an edge curved surface 74 that contacts the limiting stop 6 during the rotation of the cabinet door 300. A guide arc surface 72 is connected between the edge curved surface 74 and the groove 71. The guide arc surface 72 protrudes outward and its downward projection is arc-shaped.
[0037] A transition wheel 8 is installed on the lower side of the limiting plate 7 and is rotatably connected to the limiting plate 7. The transition wheel 8 is coaxially arranged with the guide arc surface 72, and the radius of the transition wheel 8 is greater than the radius of the guide arc surface 72. The transition wheel 8 plays a transition role in the movement of the limiting stop 6 between the edge curved surface 74 and the groove 71, reducing the friction between the limiting plate 7 and the limiting stop 6 during the rotation process.
[0038] The limiting stop 6 includes a hook-shaped first part 61, a second part 62 extending linearly in the vertical direction, and an "L"-shaped third part 63. The door hinge seat 20 also includes a third part 9 connected to the first part 1. The third part 9 is perpendicular to both the first part 1 and the second part 2. The first part 61 is fixed to the third part 9. The third part 63 is located above the second part 2 and contacts the limiting plate 7. The second part 62 passes through the second part 2 and connects between the first part 61 and the third part 63. The third part 63 can rotate and deform relative to the first part 61 around the axis of the second part 62. The limiting stop 6 is a one-piece molded part made of stainless steel, which has a certain degree of elasticity. It can be slightly deformed under external force and returns to its original shape after the external force is removed.
[0039] When the cabinet door 300 is opened, the limiting plate 7 rotates with the cabinet door 300. The third part 63 of the limiting stop 6 slides along the edge surface during the rotation of the limiting plate 7, and when it approaches the groove 71, it is engaged in the groove 71 with the assistance of the transition wheel 8. The walls on both sides of the groove 71 block the movement of the third part 63, so that the cabinet door 300 is stationary at the suspension angle α, keeping the upright freezer in the open position for easy access to refrigerated items. When the cabinet door 300 is stationary at the suspension angle α under the action of the suspension device 40, a slight inward pushing force is applied to the cabinet door 300 from the outside. The third part 63 moves out of the groove 71 and moves away from the groove 71 with the assistance of the transition wheel 8. The cabinet door 300 is released from the action of the suspension device 40 and rotates towards the cabinet body 100 under the preload of the torsion spring 3 until the cabinet door 300 covers the opening 10, and the upright freezer is in the closed position.
[0040] The second part 2 of the door hinge seat 20 has an upwardly extending first limiting block 21, and the limiting plate 7 has a downwardly extending second limiting block 73. The second limiting block 73 is arranged opposite to the groove 71. When the cabinet door 300 rotates to a position greater than the hovering angle α, the first limiting block 21 and the second limiting block 73 abut against each other, so that the cabinet door 300 can no longer be opened. This avoids the cabinet door 300 from being opened too much and interfering with the use of surrounding equipment, and avoids the cabinet door 300 from being damaged due to being opened too much.
[0041] This application enables the cabinet door to automatically close after opening and to hover at an angle through a self-closing device and a hovering device. It can also tighten the loose torsion spring through a pre-tightening component to enhance the pre-tightening force. The structure is simple, the cost is low, and the opening and closing of the door is convenient.
[0042] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.
Claims
1. A vertical refrigerator comprising a cabinet, a door hinge mechanism mounted on said cabinet, and a cabinet door rotatably connected to one side of said cabinet by said door hinge mechanism, characterized in that, The door shaft mechanism comprises: a door shaft seat mounted on the cabinet body; a self-closing door device comprising a torsion spring, a torsion spring seat and a pre-tightening assembly, the torsion spring extending in the up-down direction and being arranged in the cabinet door, one end of the torsion spring being connected with the torsion spring seat and the other end being fixedly connected with the cabinet door, the pre-tightening assembly being connected between the torsion spring seat and the door shaft seat and being configured to rotate the torsion spring seat in one direction; and a hovering device drivingly connected between the door shaft seat and the cabinet door, the hovering device comprising a limiting stopper mounted on the door shaft seat and a limiting plate fixed to the bottom of the cabinet door, the limiting plate being sleeved on the torsion spring seat, at least part of the limiting stopper being located on the rotating path of the limiting plate when the cabinet door is rotated to a hovering angle relative to the cabinet body.
2. The upright refrigerator according to claim 1, wherein The hovering angle is 80°-120°.
3. The upright refrigerator of claim 1, wherein, An inwardly recessed groove is formed in the edge of the limiting plate, and the limiting stopper is clamped into the groove when the cabinet door is rotated to the hovering angle.
4. The upright refrigerator of claim 3, wherein The groove is circular in the projection from top to bottom.
5. The upright refrigerator of claim 3, wherein The limiting plate has an edge curved surface in contact with the limiting stopper during the rotation of the cabinet door, and a guide curved surface is connected between the edge curved surface and the groove, the guide curved surface being outwardly convex and circular in the projection from top to bottom.
6. The upright refrigerator of claim 5, wherein, The hovering device further comprises a transition wheel located on the lower side of the limiting plate and drivingly connected with the limiting plate, the transition wheel being coaxially arranged with the guide curved surface and having a larger radius than the guide curved surface.
7. The upright refrigerator of claim 1, wherein The limiting stopper comprises a first part in the shape of a hook, a second part extending linearly in the up-down direction and a third part in the shape of "L", the first part being fixed to the door shaft seat, the third part being located above the door shaft seat and in contact with the limiting plate, the second part being connected between the first part and the third part, and the third part being capable of rotating and deforming relative to the first part about the axis of the second part.
8. The upright refrigerator of claim 7, wherein, The limiting stopper is an integral part.
9. The upright refrigerator of claim 1, wherein, The pre-tightening assembly comprises an upper pre-tightening disc and a lower pre-tightening disc arranged oppositely in the up-down direction, the top of the upper pre-tightening disc being fixedly connected with the torsion spring seat, the bottom of the upper pre-tightening disc having a first toothed disc end, the lower pre-tightening disc being fixedly mounted on the door shaft seat, the top of the lower pre-tightening disc having a second toothed disc end, the first toothed disc end and the second toothed disc end being in one-way engagement, and the upper pre-tightening disc being configured to rotate in one direction relative to the lower pre-tightening disc about the axis of the torsion spring.
10. The upright refrigerator of claim 9, wherein, A through hole extending in the up-down direction is formed in the middle of the lower pre-tightening disc, a limiting column is arranged in the middle of the first toothed disc end and matched with the through hole, and a threaded hole extending from bottom to top is formed in the bottom of the limiting column.