Key box

Abstract

A key box comprises a base, the top end of the base is fixedly connected with a shell with an open top in the circumferential direction; the rotating cover is rotationally connected with the bottom end of the shell through the bottom end of the rotating cover and can be rotationally opened and closed around the axis of the shell; the cylinder is vertically arranged in the middle, close to the end, of the base, and a spring extending axially is arranged in an inner cavity of the cylinder; the lifting column is coaxially inserted into the spring, a limiting disc extending in the radial direction is arranged in the middle of the lifting column and abuts against the top end of the spring, and the top end extends out of the cylinder to form an elastic push-pull rod; the adjusting assembly comprises a hexagonal screw arranged at the bottom end of the cylinder and a screw hole correspondingly formed, and the screwing depth of the hexagonal screw can be adjusted to abut against the bottom end of the spring so as to control the pop-up force of the cover; the key box is novel in structure and ingenious in conception, is different from an existing key box which adopts an iron wire and is easy to deform and break, cannot easily deform and fall off due to daily use, remarkably prolongs the service life of a product, and avoids the situation that the cover of the key box cannot be popped out due to structural damage.

Description

Technical Field

[0001] This utility model relates to a key box, specifically a key box. Background Technology

[0002] In daily life, keys are indispensable items for people's daily travel and home life, and their proper storage has always been a concern. Traditional key storage methods are diverse, among which key boxes made of wire were once widely used. However, over time and based on user feedback, these key boxes have revealed many undeniable drawbacks.

[0003] Wire key cases are prone to deformation and breakage during prolonged use. The inherent strength of wire is limited, and its structure is easily damaged by frequent opening and closing or impacts. This deformation and breakage not only affects the overall appearance of the key case but, more seriously, reduces the stability of the keys and significantly increases the risk of them falling out. Imagine a user rushing out the door only to find their keys have fallen out of a damaged key case – this would undoubtedly cause significant inconvenience and waste of time.

[0004] Meanwhile, the lack of elasticity in wire key cases is also a significant issue. Many wire key cases rely on the deformation of the wire itself to achieve a certain degree of elastic opening and closing. However, the elasticity of wire is limited, and its elasticity gradually weakens after a period of use. This makes it difficult for the key case to close tightly, easily creating gaps that allow dust and debris to enter, affecting the cleanliness of the keys. On the other hand, insufficient elasticity may require users to exert considerable force to pry it open, resulting in a very poor user experience. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a key box that effectively solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model includes:

[0007] The base has a shell with an open top that is fixedly connected to its top circumferentially;

[0008] The rotating cover is rotatably connected to the bottom end of the housing, allowing it to be opened and closed by rotating around the end of the housing.

[0009] A cylindrical tube is vertically disposed in the middle of the base near the end, and its inner cavity is provided with an axially extending spring;

[0010] The lifting column is coaxially inserted into the inside of the spring. The middle part of the lifting column is provided with a radially extending limiting plate that abuts against the top of the spring. The top extends to the outside of the cylinder to form an elastic push-pull rod.

[0011] The adjusting assembly comprises a hexagonal screw arranged at the bottom end of the cylinder and a corresponding screw hole, and the hexagonal screw is in abutment with the bottom end of the spring at a depth that can be adjusted;

[0012] The top block is protruded from the inner surface of the rotating cover and is in pressure contact with the top end of the lifting column when the rotating cover is closed.

[0013] Preferably, the limiting disc has a diameter greater than the inner diameter of the spring and less than the inner diameter of the cylinder, forming an axial movement limiting structure.

[0014] Preferably, the hexagonal screw is provided with a pressure bearing plane in direct contact with the bottom end of the spring, and the diameter of the pressure bearing plane is greater than 1.5 times the wire diameter of the spring.

[0015] Preferably, the top block has an arc-shaped contact surface matching the curved surface of the top end of the lifting column, and the curvature radius of the arc-shaped contact surface is 0.2-0.5mm smaller than the radius of the top end of the lifting column.

[0016] Preferably, the connection between the shell and the base is provided with an annular reinforcing rib, and the cross section of the reinforcing rib is in a trapezoidal structure.

[0017] Preferably, the rotating connection part of the rotating cover and the shell is provided with a damping adjusting mechanism comprising a corrugated protrusion and a groove structure that cooperate with each other.

[0018] Beneficial effects: stable and durable structure: unlike existing key boxes made of iron wire that are prone to deformation and breakage, the key box will not easily deform due to daily use, significantly prolonging the service life of the product and avoiding problems such as key falling caused by structural damage.

[0019] Superior opening and closing performance: existing iron wire key boxes often have insufficient elasticity, affecting the user experience. The rotating cover of the key box rotates around the shell axis to open and close, and the spring elastic potential energy is used to achieve automatic opening, which is smooth and powerful. At the same time, the damping adjusting mechanism of the rotating connection part of the rotating cover and the shell can avoid rapid opening and closing, and compared with the iron wire key box, it is more stable and controllable, improves the operation comfort, and avoids the situation that the iron wire key box is difficult to open or close tightly due to insufficient elasticity.

[0020] Reliable elastic support assembly: the elastic support assembly of the key box is designed ingeniously, the limiting disc in the middle of the lifting column is in abutment with the top end of the spring, forming a reliable axial movement limiting structure, and the pressure bearing plane of the hexagonal screw ensures uniform and stable force on the spring, ensuring normal work of the spring, avoiding abnormal elasticity caused by unreasonable structure of the iron wire, and ensuring long-term stable operation of the key box.

[0021] Precise and efficient pressure transmission: The special contact design between the top block and the top of the lifting column ensures precise pressure transmission, guarantees the normal operation of the elastic support components, and maintains stable opening and closing of the key box. This is difficult to achieve with existing wire key boxes, effectively avoiding opening and closing failures caused by poor pressure transmission.

[0022] Adjustable opening force: To meet the needs of different users, the opening force of this key case can be adjusted by changing the depth of the hexagonal screw, while the wire key case has a fixed spring force that cannot be adjusted. Users can flexibly adjust the opening force according to their own usage habits and actual scenarios to meet diverse usage needs, greatly improving the applicability of the product. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0026] Figure 3 This is a top view of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the rotating cover of this utility model;

[0028] Figure 5 This is a cross-sectional view of the present invention (AA).

[0029] The following are the labels in the diagram: 1. Base; 2. Housing; 3. Rotating cover; 4. Cylinder; 5. Spring; 6. Lifting column; 7. Limiting plate; 8. Hexagonal screw; 9. Screw hole; 10. Top block. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-5 The specific embodiments of this utility model will be described in further detail.

[0031] Implementation examples, by Figures 1-5 The present invention provides a key box, comprising a base 1, a shell 2, a rotating cover 3, a cylinder 4, a spring 5, a lifting column 6, a limiting plate 7, a hexagonal screw 8, a screw hole 9, and a top block 10;

[0032] The base 1 has a shell 2 with an open top that is circumferentially fixed to its top;

[0033] The rotating cover 3 is rotatably connected to the bottom end of the housing 2 through its bottom end, and can be rotated to open and close around the housing axis;

[0034] A cylinder 4 is vertically arranged at the middle of the base 1 near the end, and the inner cavity of the cylinder 4 is provided with an axially extending spring 5;

[0035] A lifting column 6 is coaxially inserted into the spring 5, and the middle of the lifting column 6 is provided with a radially extending limiting disc 7 abutting against the top end of the spring 5, and the top end of the lifting column 6 extends to the outside of the cylinder 4 to form an elastic push-pull rod;

[0036] An adjusting assembly is arranged at the bottom end of the cylinder 4, which includes a hexagonal screw 8 and a corresponding screw hole 9, and the hexagonal screw 8 is screwed into the bottom end of the spring 5 with adjustable depth;

[0037] A top block 10 is protruded from the inner surface of the rotating cover 3, and forms pressure contact with the top end of the lifting column 6 when the rotating cover is closed.

[0038] The base 1 and the shell 2: the top end of the base 1 is circumferentially fixedly connected with the shell 2 which is open at the top, and a ring-shaped reinforcing rib is arranged at the connection between the base 1 and the shell 2, and the cross section of the reinforcing rib is in a trapezoidal structure, which effectively enhances the stability of the connection between the base and the shell and improves the overall structural strength.

[0039] The rotating cover 3: the rotating cover 3 is rotationally connected with the bottom end of the shell 2 through the bottom end of the rotating cover 3, and can be rotated around the end of the shell to open and close, thereby providing a convenient way for users to take and place the keys. The rotating connection part between the rotating cover 3 and the shell 2 is provided with a damping adjusting mechanism which is composed of a corrugated protrusion and a groove structure matched with each other, and the damping force of the rotating cover when it is opened and closed can be adjusted according to the user's needs, so as to avoid collision damage caused by too fast opening and closing.

[0040] The elastic supporting assembly: the cylinder 4 is vertically arranged at the middle of the base 1 near the end, and the inner cavity of the cylinder 4 is provided with an axially extending spring 5. The lifting column 6 is coaxially inserted into the spring 5, and the middle of the lifting column 6 is provided with a radially extending limiting disc 7, the diameter of the limiting disc 7 is greater than the inner diameter of the spring 5 and less than the inner diameter of the cylinder 4, forming a limiting structure for axial movement, the limiting disc 7 abuts against the top end of the spring 5, and the top end of the lifting column 6 extends to the outside of the cylinder 4 to form an elastic push-pull rod. Through the adjusting assembly, including a hexagonal screw 8 arranged at the bottom end of the cylinder 4 and a corresponding screw hole 9, the hexagonal screw 8 is screwed into the bottom end of the spring 5 with adjustable depth, and the spring force can be adjusted according to the actual needs. The hexagonal screw 8 is provided with a pressure bearing plane directly contacting the bottom end of the spring 5, and the diameter of the pressure bearing plane is 1.5 times greater than the wire diameter of the spring, which ensures the uniformity and stability of the force applied to the spring.

[0041] The top block 10 is convexly arranged on the inner surface of the rotating cover 3, and the top block 10 is in pressure contact with the top end of the lifting column 6 when the rotating cover is closed. The top block 10 has an arc-shaped contact surface matched with the curved surface of the top end of the lifting column 6, and the curvature radius of the arc-shaped contact surface is smaller than the radius of the top end of the lifting column by 0.2-0.5 mm, so that the pressure can be better transmitted when the two are in contact, and the normal work of the elastic supporting assembly is ensured.

[0042] Working principle: when the utility model is used, the closed state is: when the rotating cover 3 is rotated to the closed position around the rotating connection part at the bottom end of the shell 2, the top block 10 convexly arranged on the inner surface of the rotating cover 3 gradually approaches and contacts the top end of the lifting column 6. With the further closing of the rotating cover 3, the top block 10 exerts a vertical downward pressure on the top end of the lifting column 6 by virtue of the arc-shaped contact surface matched with the curved surface of the top end of the lifting column 6 and slightly smaller in curvature radius. The lifting column 6 overcomes the elastic force of the spring 5 and moves downward along the axial direction of the cylinder 4 under the action of the pressure, so that the spring 5 is compressed. In this process, the spring 5 continuously stores elastic potential energy, preparing for the subsequent opening of the rotating cover.

[0043] Opening process: when the user needs to open the rotating cover 3, an external force is applied to the rotating cover 3 to start rotating it around the shell end. At this time, the compressed spring 5 starts to release the stored elastic potential energy due to the elastic restoring force. The spring 5 stretches upward and pushes the lifting column 6 to move upward along the axial direction of the cylinder 4. The upward movement of the lifting column 6 directly acts on the top block 10 on the inner surface of the rotating cover 3, thereby lifting the rotating cover 3 upward and achieving the automatic opening of the rotating cover 3. During the entire opening process, the elastic potential energy of the spring 5 is converted into kinetic energy for opening the rotating cover 3, providing the user with a convenient opening experience.

[0044] Opening force adjustment: the adjustment assembly provided in the key box plays a key role therein. The hexagonal screw 8 in the adjustment assembly is screwed into the corresponding screw hole 9 at the bottom end of the cylinder 4, and the screwing depth is adjustable. When the user needs to adjust the opening force of the rotating cover 3, the hexagonal screw 8 is rotated by using a tool (such as a hexagonal wrench) to change the depth of the screwing into the screw hole 9. If the hexagonal screw 8 is screwed in deeper, the support position of the bottom end of the spring 5 is relatively raised, the initial compression amount of the spring 5 is increased, the elastic potential energy reserve is increased, and the pushing force provided when the rotating cover 3 is opened is relatively larger, and the opening force of the rotating cover 3 is stronger; on the contrary, if the hexagonal screw 8 is unscrewed, the support position of the bottom end of the spring 5 is lowered, the initial compression amount of the spring 5 is reduced, the elastic potential energy reserve is reduced, and the pushing force provided when the rotating cover 3 is opened is smaller, and the opening force of the rotating cover 3 is lighter. In this way, the user can flexibly adjust the opening force of the rotating cover 3 according to his own use habits and actual needs.

[0045] Beneficial effects: stable and durable structure: unlike existing key boxes made of iron wire that are prone to deformation and breakage, the key box is not easily deformed by daily use, significantly prolonging the service life of the product and avoiding problems such as key falling off caused by structural damage.

[0046] Superior opening and closing performance: existing iron wire key boxes often have insufficient elasticity, affecting the user experience. The key box rotates the cover 3 around the axis of the shell to open and close, and automatically opens with the help of the elastic potential energy of the spring 5, opening smoothly and powerfully. At the same time, the damping adjustment mechanism of the rotating cover 3 and the shell 2 rotating connection part can avoid opening and closing too fast, and compared with the iron wire key box, it is more stable and controllable, improves the operation comfort, and will not appear similar to the iron wire elasticity insufficient to cause opening difficult or closing not serious situation.

[0047] Reliable elastic support assembly: the elastic support assembly of the key box is designed ingeniously, the middle limiting disc 7 of the lifting column 6 abuts against the top end of the spring 5, forming a reliable axial motion limiting structure, and the pressure bearing plane of the hexagonal screw 8 ensures uniform and stable force on the spring, ensuring normal work of the spring, and avoiding the elastic abnormality caused by unreasonable structure design of the iron wire, ensuring long-term stable operation of the key box.

[0048] Precise and efficient pressure transmission: the special contact design of the top block 10 and the top end of the lifting column 6 ensures precise pressure transmission, ensuring normal work of the elastic support assembly and maintaining stable opening and closing of the key box, which is difficult to achieve by existing iron wire key boxes, effectively avoiding opening and closing failure caused by poor pressure transmission.

[0049] Flexible and adjustable opening force: for different user needs, the key box can adjust the depth of the hexagonal screw 8 to change the opening force of the rotating cover 3, while the iron wire key box has fixed elasticity and cannot be adjusted. Users can flexibly adjust according to their own use habits and actual scene to meet various use needs, greatly improving the product applicability.

[0050] Finally, it should be pointed out that the above described is only the preferred embodiment of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A key safe, characterised in that, The utility model relates to a kind of adjustable height rotating cover, including: Base (1), top end circumferential fixed connection has the shell (2) of top open; Rotary cover (3), form rotating connection by its bottom end with the bottom end of the shell (2), can be rotated open and close around shell end part; Cylinder (4), vertical setting in the middle part of the base (1) close to end part, its inner cavity is equipped with axially extending spring (5); Lifting column (6), coaxially inserted in the spring (5) inside, the middle part of this lifting column (6) is equipped with radially extending limit disc (7) and spring (5) top end abutment, top end extends to cylinder (4) outside and forms elastic push-pull rod; Adjusting assembly, including the hexagonal screw (8) of setting in the bottom end of cylinder (4) and the corresponding screw hole (9) of being set, the hexagonal screw (8) is screwed into the bottom end of spring (5) with adjustable depth abutment; Top block (10), convex in the inner surface of the rotary cover (3), when rotary cover closes, with the top end of lifting column (6) forms pressure contact.

2. A key safe according to claim 1, wherein: The limit disc (7) diameter is greater than the inner diameter of spring (5) and less than the inner diameter of cylinder (4), and forms the limit structure of axial movement.

3. A key safe according to claim 2, wherein: The hexagonal screw (8) is equipped with the pressure-bearing plane that directly contacts with the bottom end of spring (5), and the pressure-bearing plane diameter is greater than 1.5 times of spring wire diameter.

4. A key safe according to claim 3, wherein: The top block (10) has arc contact surface matched with the top end curved surface of lifting column (6), and the curvature radius of the arc contact surface is smaller than the top end radius of lifting column by 0.2-0.5mm.

5. A key safe according to claim 4, wherein: The connecting place of the shell (2) and the base (1) is equipped with annular reinforcing rib, and the cross section of the reinforcing rib is trapezoidal structure.

6. A key safe according to claim 5, wherein: The rotary connection part of the rotary cover (3) and the shell (2) is equipped with damping adjusting mechanism, including mutually matched corrugated protrusion and groove structure.

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