Adjustable hinge mechanism and door box equipment

Abstract

The utility model relates to an adjustable hinge mechanism and door box equipment, which can adjust the magnitude of hinge force without replacing a spring so as to shorten the product development time and reduce the development cost and period. The adjustable hinge mechanism comprises: a hinge base; the hinge bracket is rotatably arranged on the hinge base so as to rotate around a first rotating axis relative to the hinge base; the sliding support is arranged on the hinge base in a sliding mode and connected to the hinge support in a rotating mode so as to rotate around a second rotating axis parallel to the first rotating axis relative to the hinge support. The hovering spring is arranged between the hinge base and the sliding bracket; and the adjusting device comprises a driving part and a screw rod which is in driving connection with the driving part and is meshed with the hovering spring, and the screw rod rotates under the action of the driving part so as to adjust the meshing length between the screw rod and the hovering spring and is used for adjusting the hinge force of the adjustable hinge mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an adjustable hinge mechanism and a door box device. Background Art

[0002] In the kitchen appliance industry, door box devices such as steam ovens or dishwashers are common household appliances. Usually, the cabinet assembly and the door assembly in the door box device are movably connected by a spring hinge. However, since the door assembly in the kitchen appliance is usually composed of two to three pieces of tempered glass, plus the fixed sleeve combination form for fixing the hinge, the weight of the door assembly is generally more than five kilograms. Especially for some devices with a larger volume, the weight is more obvious. Therefore, the hinge that movably connects the door assembly to the cabinet assembly plays a very important role. On the one hand, it is necessary to consider that the closing force of the whole machine during function use cannot be too small to ensure that steam or water vapor does not leak. This is because kitchen appliances are usually embedded in cabinets. If steam or water vapor leaks for a long time, it will increase the risk of damage to the user's cabinet. On the other hand, it is also necessary to consider the user's hand feeling during operation. The opening force should not be too large when opening, which is not friendly to users with less strength, and it is easy to cause a rude closing experience when the user closes the door after use.

[0003] At present, existing spring hinges usually store and release energy through the stretching and compression of internal spiral springs, and the hinge force they provide is fixed. However, the weight of the door assembly in the door box device will vary, and the installation method of the door assembly will cause the center of gravity of the door to change, and the required hinge force will also vary slightly. This leads to developers having to replace the spring model during the development process of the whole machine, and control elements such as spring length, spring diameter, and spring wire diameter to adapt to the whole machine. This requires developers to disassemble and replace the spring again and again to achieve the effect of adapting to the whole machine, resulting in a long time spent on selection during the development process, increasing the development cost and cycle of the enterprise. Summary of the Utility Model

[0004] Based on this, in view of the problem that the existing spring hinge provides a fixed hinge force, resulting in a long time spent on selection during the development process and increasing the development cost and cycle of the enterprise, the utility model provides an adjustable hinge mechanism and a door box device.

[0005] In an embodiment of the present application, the utility model provides an adjustable hinge mechanism, including:

[0006] A hinge base;

[0007] A hinge bracket is rotatably arranged on the hinge base to rotate relative to the hinge base about a first rotation axis;

[0008] A sliding bracket is slidably arranged on the hinge base and rotatably connected to the hinge bracket to rotate relative to the hinge bracket about a second rotation axis parallel to the first rotation axis;

[0009] A hover spring is arranged between the hinge base and the sliding bracket; and

[0010] An adjusting device includes a driving member and a screw rod that is drivingly connected to the driving member and meshes with the hover spring. The screw rod rotates under the action of the driving member to adjust the meshing length between the screw rod and the hover spring, for adjusting the hinge force of the adjustable hinge mechanism.

[0011] According to an embodiment of the present application, the screw rod includes a rod body arranged parallel to the hover spring and teeth protruding from the outer peripheral surface of the rod body and spirally extending along the axial direction of the rod body. The helix direction of the teeth is the same as that of the hover spring to be inserted into the hover spring.

[0012] According to an embodiment of the present application, the driving member includes a driving seat fixedly installed on the hinge base and a gear rotatably arranged on the driving seat and meshing with the teeth; when the gear rotates to drive the teeth to rotate, the rod body of the screw rod moves along the axial direction of the hover spring to adjust the meshing length between the teeth and the hover spring.

[0013] According to an embodiment of the present application, the driving member further includes a guiding rack fixedly arranged on the driving seat and meshing with the teeth of the screw rod, and the guiding rack extends along the axial direction of the hover spring.

[0014] According to an embodiment of the present application, the driving member further includes an adjusting handle rotatably arranged on the driving seat and fixedly connected to the gear.

[0015] According to an embodiment of the present application, the wire diameter of the hover spring is equal to 0.95 times the axial pitch of the screw rod; the tooth thickness of the screw rod is equal to 0.95 times the difference between the pitch of the hover spring and the wire diameter of the hover spring.

[0016] According to an embodiment of the present application, the hover spring has a fixed end limitedly connected to the hinge base and a movable end limitedly connected to the sliding bracket; the adjusting device is arranged on the hinge base adjacent to the fixed end of the hover spring so that the screw rod penetrates into the hover spring from the fixed end.

[0017] According to an embodiment of the present application, the adjusting devices are arranged in pairs, and each pair of the adjusting devices is symmetrically disposed on opposite sides of the hovering spring.

[0018] According to an embodiment of the present application, the adjustable hinge mechanism further includes a sliding block slidably disposed on the sliding bracket and a closing door spring disposed between the sliding block and the sliding bracket; the hinge bracket includes a pivot portion pivotally connected to the hinge base and providing the first rotation axis, a fixing portion radially extending from the pivot portion, and an abutting portion radially extending from the pivot portion and abutting against the sliding block, the abutting portion is pivotally connected to the sliding bracket to provide the second rotation axis; the abutting portion has a mating surface for abutting against the sliding block at the end stage of closing the door and a guiding surface radially extending away from the mating surface with respect to the second rotation axis.

[0019] According to another aspect of the present application, an embodiment of the present application further provides a door box device, including:

[0020] A box body assembly;

[0021] A door body assembly; and

[0022] The adjustable hinge mechanism described in any one of the above, the adjustable hinge mechanism is disposed between the box body assembly and the door body assembly.

[0023] In summary, for the adjustable hinge mechanism of the present application, only by driving the screw rod to rotate through the driving member to change the meshing length between the screw rod and the hovering spring, so that the spring force of the same spring is artificially intervened to control the magnitude, the magnitude of the hinge force provided by the adjustable hinge mechanism can be artificially adjusted to achieve the effect of adapting to the whole machine, without the need for developers to disassemble and replace the spring again and again like the existing spring hinges to achieve the effect of adapting to the whole machine, which helps to shorten the selection time spent in the development process, is convenient for reducing the development cost and shortening the development cycle.

[0024] In addition, the adjustable hinge mechanism of the present application can realize the adjustment of the hinge spring force in terms of structure, without replacing springs with small differences, so as to reduce the troubles brought by the above problems to a certain extent; at the same time, for the hinge mechanisms on the market at present, they are usually characterized as disposable products, and it is quite laborious for the whole machine factory to disassemble and replace springs of different specifications, while the adjustable hinge mechanism of the present application can avoid the work of developers frequently replacing different springs during the product development process, and can greatly shorten the development time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1Schematic perspective view of an adjustable hinge mechanism according to an embodiment of the present application;

[0026] Figure 2 Schematic structural view of the adjustable hinge mechanism according to the above embodiment of the present application from another perspective;

[0027] Figure 3 Exploded schematic view of the adjustable hinge mechanism according to the above embodiment of the present application;

[0028] Figure 4 Schematic cross-sectional view of the adjustable hinge mechanism according to the above embodiment of the present application;

[0029] Figure 5 Schematic structural view of the adjustable hinge mechanism in the closed door state according to the above embodiment of the present application;

[0030] Figure 6 Schematic structural view of the adjustable hinge mechanism in the open door state according to the above embodiment of the present application.

[0031] Description of main component symbols: 1, adjustable hinge mechanism; 10, hinge base; 100, first rotation axis; 20, hinge bracket; 200, second rotation axis; 21, pivot part; 22, fixed connection part; 23, abutting part; 231, mating surface; 232, guiding surface; 30, sliding bracket; 40, hovering spring; 41, fixed end; 42, movable end; 50, adjusting device; 51, driving part; 511, driving seat; 512, gear; 513, guiding rack; 514, adjusting handle; 52, screw rod; 521, rod body; 522, teeth; 60, sliding block; 70, door closing spring.

[0032] The above description of main component symbols further elaborates on the present utility model in conjunction with the accompanying drawings and specific embodiments. Detailed Description of the Embodiment

[0033] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following detailed description of the specific embodiments of the present utility model is provided in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0036] In the present utility model, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0038] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0039] Considering that there are differences in the weights of the door body components in existing door box devices, and the installation methods of the door body components will cause changes in the center of gravity of the door body, which leads to developers having to adjust the magnitude of the hinge force provided by replacing the spring model during the development of the whole machine to adapt to the whole machine. This requires developers to disassemble and replace the spring again and again to achieve the effect of adapting to the whole machine, resulting in a long time spent on selection during the development process and increasing the development cost and cycle of the enterprise. Therefore, the present application provides an adjustable hinge mechanism and a door box device, which can adjust the magnitude of the hinge force without replacing the spring, so as to shorten the product development time and reduce the development cost and cycle.

[0040] Specifically, referring to the attached Figures 1 to 6 As shown, an embodiment of the present application provides a door box device, which may include a box body component (not shown in the figure), a door body component (not shown in the figure), and an adjustable hinge mechanism 1 disposed between the box body component and the door body component, so as to apply an adjustable hinge force to the door body component 3 through the adjustable hinge mechanism 1, facilitating the effect of adapting to the whole machine without replacing the spring. It can be understood that the door box device of the present application can be but is not limited to being implemented as a steam oven, a dishwasher, a refrigerator, etc.; in addition, the door box device of the present application can also be but is not limited to including a functional main body capable of realizing functions such as dishwashing or refrigeration, which will not be elaborated herein.

[0041] More specifically, as Figures 1 to 6As shown, the adjustable hinge mechanism 1 may include a hinge base 10 for fixedly connecting with the box body assembly, a hinge bracket 20 for fixedly connecting with the door body assembly, a sliding bracket 30 slidably disposed on the hinge base 10, a hovering spring 40 disposed between the hinge base 10 and the sliding bracket 30, and an adjusting device 50. The hinge bracket 20 is rotatably disposed on the hinge base 10 to rotate relative to the hinge base 10 about a first rotation axis 100. The sliding bracket 30 is rotatably connected to the hinge bracket 20 to rotate relative to the hinge bracket 20 about a second rotation axis 200 parallel to the first rotation axis 100. The adjusting device 50 includes a driving member 51 and a screw rod 52 drivingly connected to the driving member 51 and engaged with the hovering spring 40. The screw rod 52 rotates under the action of the driving member 51 to adjust the engagement length between the screw rod 52 and the hovering spring 40 for adjusting the hinge force magnitude of the adjustable hinge mechanism 1. It can be understood that in other examples of the present application, the hinge base 10 may also be fixedly connected to the door body assembly; correspondingly, the hinge bracket 20 is fixedly connected to the box body assembly.

[0042] It should be noted that for the same hovering spring 40, the spring force it provides satisfies Hooke's law F = kx, where: k is the stiffness coefficient of the hovering spring 40, which is determined by the material, thickness, radius, and length of the spring; x is the deformation amount of the hovering spring 40, that is, the elongation or compression value of the spring. In particular, when the material, thickness (i.e., spring wire diameter), and radius (i.e., spring radius) of the spring remain unchanged, the effective length of the spring (i.e., the length that can undergo deformation) is inversely proportional to the stiffness coefficient of the spring; that is, the longer the effective length of the spring, the smaller the stiffness coefficient of the spring; the shorter the effective length of the spring, the larger the stiffness coefficient of the spring.

[0043] In this way, since the portion of the hovering spring 40 meshing with the screw rod 52 (i.e., the meshing section) will lose its deformation ability (i.e., fail), the effective length of the hovering spring 40 (i.e., the length of the deformable section) will change with the change of the meshing length, resulting in the change of the stiffness coefficient k of the hovering spring 40. Therefore, when the screw rod 52 rotates under the action of the driving member 51 to increase the meshing length L between the screw rod 52 and the hovering spring 40, the effective length of the hovering spring 40 will become smaller, resulting in the increase of the stiffness coefficient k of the hovering spring 40, so that the spring force F generated by the hovering spring 40 when undergoing the same deformation amount x will become larger, and thus the hinge force provided by the adjustable hinge mechanism 1 will also become larger; when the screw rod 52 rotates under the action of the driving member 51 to decrease the meshing length L between the screw rod 52 and the hovering spring 40, the effective length of the hovering spring 40 will become larger, resulting in the decrease of the stiffness coefficient k of the hovering spring 40, so that the spring force F generated by the hovering spring 40 when undergoing the same deformation amount x will become smaller, and thus the hinge force provided by the adjustable hinge mechanism 1 will also become smaller.

[0044] In other words, the adjustable hinge mechanism 1 of the present application only needs to drive the screw rod 52 to rotate through the driving member 51 to change the meshing length between the screw rod 52 and the hovering spring 40, so that the spring force of the same spring can be artificially intervened to control the magnitude, and the magnitude of the hinge force provided by the adjustable hinge mechanism 1 can be artificially adjusted to achieve the effect of adapting to the whole machine, without the need for developers to disassemble and replace the spring again and again as in the existing spring hinges to achieve the effect of adapting to the whole machine, which helps to shorten the selection time spent in the development process, and is convenient for reducing the development cost and shortening the development cycle.

[0045] In addition, the currently mainstream used door hinges are all of the fixed hinge force structure form. Due to the weight difference of the door body assembly and the installation method, the center of gravity of the door body assembly changes, which will cause more changes in the hovering spring, but the required hovering force often has little difference, which is not very friendly to the enterprise's material control, large differences in mass production and price negotiation problems. The adjustable hinge mechanism 1 of the present application can adjust the hinge spring force structurally, without the need to replace springs with small differences, so as to reduce the troubles brought by the above problems to a certain extent; at the same time, for the hinge mechanisms on the market currently, they are usually characterized as disposable products, and it is rather laborious for the whole machine factory to disassemble and replace springs of different specifications, while the adjustable hinge mechanism 1 of the present application can avoid the work of developers frequently replacing different springs during the product development process, and can greatly shorten the development time.

[0046] Exemplarily, such as Figure 2As shown, the screw rod 52 includes a rod body 521 arranged in parallel with the hovering spring 40 and teeth 522 protruding from the outer peripheral surface of the rod body 521 and spirally extending along the axial direction of the rod body 521. The helix direction of the teeth 522 is consistent with that of the hovering spring 40, so that the teeth 522 can engage with the hovering spring 40 and be inserted into the hovering spring 40.

[0047] Optionally, as Figure 2 and Figure 3 shown, the driving member 51 includes a driving seat 511 fixedly installed on the hinge base 10 and a gear 512 rotatably arranged on the driving seat 511 and meshing with the teeth 522; when the gear 512 rotates to drive the teeth 522 to rotate, the rod body 521 of the screw rod 52 moves along the axial direction of the hovering spring 40 to adjust the meshing length between the teeth 522 and the hovering spring 40.

[0048] Optionally, as Figure 2 shown, the driving member 51 further includes a guiding rack 513 fixedly arranged on the driving seat 511 and meshing with the teeth 522 of the screw rod 52. The guiding rack 513 extends along the axial direction of the hovering spring 40 to guide the axial movement of the rod body 521 of the screw rod 52 relative to the hovering spring 40.

[0049] Optionally, as Figure 2 and Figure 3 shown, the driving member 51 further includes an adjusting handle 514 rotatably arranged on the driving seat 511 and fixedly connected to the gear 512, so that the user can manually rotate the adjusting handle 514 to drive the gear 512 to rotate, and further drive the screw rod 52 to axially move relative to the hovering spring 40 to adjust the meshing length between the teeth 522 and the hovering spring 40.

[0050] It should be noted that the screw rod 52 mentioned in the present application can be but is not limited to being implemented as a worm that can engage with the hovering spring 40; the gear 512 is implemented as a worm gear matching the worm, so as to drive the axial movement of the worm through the rotation of the worm gear to realize the adjustment of the meshing length between the worm and the hovering spring 40. It can be understood that in the selection of the worm and worm gear, the end face pitch of the worm gear needs to be the same as the axial pitch of the worm.

[0051] Optionally, the wire diameter d1 of the hovering spring 40 is basically equal to 0.95 times the axial pitch P of the screw rod 52, that is, d1≈0.95P, so as to better realize the engagement between the screw rod 52 and the hovering spring 40.

[0052] Optionally, the tooth thickness d2 of the screw rod 52 is substantially equal to 0.95 times the difference between the pitch D of the hovering spring 40 and the wire diameter d1 of the hovering spring 40, that is, d2≈0.95(D - d1), so as to ensure that there is a small gap when the screw rod 52 meshes with the hovering spring 40, making the operation more labor-saving.

[0053] It should be noted that since the face pitch of the gear 512 is the same as the axial pitch of the screw rod 52, and the teeth 522 of the screw rod 52 are inserted into the hovering spring 40, the adjustable hinge mechanism 1 of the present application can obtain the meshing length L between the screw rod 52 and the hovering spring 40 by measuring the number of rotating teeth on the screw rod 52 or the gear 512. Then, according to Hooke's law, the spring force provided by the hovering spring 40 can be calculated, and thus the magnitude of the hinge force provided by the adjustable hinge mechanism 1 can be determined.

[0054] In addition, in the above examples of the present application, as Figure 2 and Figure 3 shown, the hovering spring 40 has a fixed end 41 that is limit-connected to the hinge base 10 and a movable end 42 that is limit-connected to the sliding bracket 30; the adjusting device 50 is arranged on the hinge base 10 adjacent to the fixed end 41 of the hovering spring 40, so that the screw rod 52 is inserted into the hovering spring 40 from the fixed end 41 for meshing, causing the portion of the hovering spring 40 adjacent to the fixed end 41 to lose its deformation ability, thereby realizing the adjustment of the spring force magnitude of the hovering spring 40. It can be understood that in other examples of the present application, the adjusting device 50 can also be arranged on the sliding bracket 30 adjacent to the fixed end 41 of the hovering spring 40, so that the screw rod 52 is inserted into the hovering spring 40 from the movable end 42 for meshing, causing the portion of the hovering spring 40 adjacent to the movable end 42 to lose its deformation ability, and still being able to realize the adjustment of the spring force magnitude of the hovering spring 40 without affecting the hovering force provided by the hovering spring 40 to the hinge bracket 20.

[0055] Optionally, the hovering spring 40 is implemented as a tension spring, and the two ends of the tension spring are respectively hooked to the hinge base 10 and the sliding bracket 30 to achieve the required limit connection.

[0056] According to the above embodiments of the present application, as Figures 1 to 3 shown, the adjusting devices 50 are preferably arranged in pairs; that is, the number of the adjusting devices 50 is implemented as one pair or multiple pairs, and each pair of adjusting devices 50 is symmetrically arranged on the opposite sides of the hovering spring 40, so that the screw rods 52 of the adjusting devices 50 mesh with the hovering spring 40 from the opposite sides to clamp the hovering spring 40 and improve the meshing stability.

[0057] Optionally, asFigures 2 to 6 As shown, the adjustable hinge mechanism 1 further includes a sliding block 60 slidably disposed on the sliding bracket 30 and a closing door spring 70 disposed between the sliding block 60 and the sliding bracket 30. The sliding block 60 abuts against the hinge bracket 20 under the action of the closing door spring 70 to apply a closing door moment to the hinge bracket 20 at the end stage of closing the door.

[0058] Optionally, as Figures 3 to 6 shown, the hinge bracket 20 includes a pivot portion 21 pivotally connected to the hinge base 10 and providing the first rotation axis 100, a fixed connection portion 22 radially extending from the pivot portion 21 and used for fixedly connecting with the door body assembly, and an abutting portion 23 radially extending from the pivot portion 21 and abutting against the sliding block 60. The abutting portion 23 is pivotally connected to the sliding bracket 30 to provide the second rotation axis 200.

[0059] Optionally, as Figures 4 to 6 shown, the abutting portion 23 has a mating surface 231 for abutting against the sliding block 60 at the end stage of closing the door and a guiding surface 232 radially extending away from the mating surface 231 relative to the second rotation axis 200. Thus, as Figure 6 and Figure 4 shown, during the process of closing the door of the door box device, the sliding block 60 abuts against the guiding surface 232 to guide the sliding block 60 to slide in a direction close to the second rotation axis 200 through the guiding surface 232 until at the end stage of closing the door, as Figure 5 shown, the sliding block 60 abuts against the mating surface 231 to apply a closing door moment to the hinge bracket 20 in a direction opposite to the gravity moment direction of the door body assembly, so as to provide a closing force to better keep the door body assembly in the closed state.

[0060] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0061] The above embodiments only express several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. An adjustable hinge mechanism, characterized in that, Comprising: A hinge base; A hinge bracket rotatably disposed on the hinge base to rotate relative to the hinge base about a first rotation axis; A sliding bracket slidably disposed on the hinge base and rotatably connected to the hinge bracket to rotate relative to the hinge bracket about a second rotation axis parallel to the first rotation axis; A hovering spring disposed between the hinge base and the sliding bracket; And An adjusting device including a driving member and a screw rod drivingly connected to the driving member and meshing with the hovering spring. The screw rod rotates under the action of the driving member to adjust the meshing length between the screw rod and the hovering spring, for adjusting the hinge force magnitude of the adjustable hinge mechanism.

2. The adjustable hinge mechanism according to claim 1, wherein, The screw rod includes a rod body arranged parallel to the hovering spring and teeth protruding from an outer peripheral surface of the rod body and helically extending along an axial direction of the rod body. The helix direction of the teeth is the same as that of the hovering spring to be inserted into the hovering spring.

3. The adjustable hinge mechanism according to claim 2, wherein The driving member includes a driving seat fixedly installed on the hinge base and a gear rotatably disposed on the driving seat and meshing with the teeth. When the gear rotates to drive the teeth to rotate, the rod body of the screw rod moves along an axial direction of the hovering spring to adjust the meshing length between the teeth and the hovering spring.

4. The adjustable hinge mechanism according to claim 3, wherein, The driving member further includes a guiding rack fixedly disposed on the driving seat and meshing with the teeth of the screw rod. The guiding rack extends along the axial direction of the hovering spring.

5. The adjustable hinge mechanism according to claim 3, wherein The driving member further includes an adjusting handle rotatably disposed on the driving seat and fixedly connected to the gear.

6. The adjustable hinge mechanism according to any one of claims 1 to 5, characterized in that, The wire diameter of the hovering spring is equal to 0.95 times the axial pitch of the screw rod; the tooth thickness of the screw rod is equal to 0.95 times the difference between the pitch of the hovering spring and the wire diameter of the hovering spring.

7. The adjustable hinge mechanism according to any one of claims 1 to 5, characterized in that, The hovering spring has a fixed end limit-connected to the hinge base and a movable end limit-connected to the sliding bracket; the adjusting device is disposed on the hinge base adjacent to the fixed end of the hovering spring, so that the screw rod is inserted into the hovering spring from the fixed end.

8. The adjustable hinge mechanism according to any one of claims 1 to 5, characterized in that, The adjusting devices are arranged in pairs, and each pair of the adjusting devices is symmetrically disposed on opposite sides of the hovering spring.

9. The adjustable hinge mechanism according to any one of claims 1 to 5, characterized in that, The adjustable hinge mechanism further includes a sliding block slidably disposed on the sliding bracket and a closing door spring disposed between the sliding block and the sliding bracket; the hinge bracket includes a pivot portion pivotally connected to the hinge base and providing the first rotation axis, a fixing portion radially extending from the pivot portion, and an abutting portion radially extending from the pivot portion and abutting against the sliding block. The abutting portion is pivotally connected to the sliding bracket to provide the second rotation axis; the abutting portion has a mating surface for abutting against the sliding block at the end stage of closing the door and a guiding surface radially extending away from the mating surface relative to the second rotation axis.

10. Door box device, characterized in that, Comprising: A box body assembly; A door body assembly; And The adjustable hinge mechanism according to any one of claims 1 to 9, the adjustable hinge mechanism being disposed between the box body assembly and the door body assembly.

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