A low-stress-concentrated hinge seat structure

Abstract

The utility model discloses a low stress concentrated hinge seat structure, including main installation base plate, the both sides of main installation base plate top respectively symmetry fixed with first hinge lug and second hinge lug. The utility model discloses a low stress concentrated hinge seat structure, through setting up main reinforcing rib and auxiliary reinforcing rib, common dispersion stress, through setting up first fillet transition area and second fillet transition area, and cooperate reinforcing rib diversion fillet, has constructed the cooperative diversion structure, will the load of first hinge lug, second hinge lug, auxiliary reinforcing rib, main reinforcing rib, through multiple path dispersion to main installation base plate, converts the low stress area of extensive distribution from the local high stress peak value in traditional design, thereby has reduced the stress concentration coefficient of first hinge lug and second hinge lug bottom root portion significantly, has promoted the anti -fatigue life and overall bearing reliability under the alternating load of hinge seat.

Description

Technical Field

[0001] This utility model relates to the field of hinge seat structure design, and more particularly to a hinge seat structure with low stress concentration. Background Technology

[0002] A hinge pin is a basic mechanical connection structure commonly used in the hinged installation of various doors, covers, door frames, and other main bodies. Its core function is to support rotating parts through the hinge pin and reliably transmit loads generated during opening, closing, and load-bearing processes.

[0003] However, the current traditional hinge seat structure has several obvious shortcomings: First, the connection between the lug and the base plate often uses a right-angle transition, lacking an optimized reinforcing rib layout, resulting in poor force transmission and severe stress concentration at the root and around the pin hole. Under long-term alternating loads, fatigue cracks are easily initiated, limiting its load-bearing capacity and service life. Second, lubrication and maintenance performance is not well considered. Maintenance usually requires the entire hinge to be disassembled, which is not only time-consuming and laborious, but also increases the risk of loosening due to frequent disassembly and assembly. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a hinge seat structure with low stress concentration.

[0005] The following technical solution is adopted: a hinge seat structure with low stress concentration, including a main mounting base plate, wherein a first hinge lug and a second hinge lug are symmetrically fixed on both sides of the top end of the main mounting base plate.

[0006] Optionally, a main reinforcing rib and an auxiliary reinforcing rib are fixedly provided between one side of the first hinge lug and the top of the main mounting base, respectively. The two auxiliary reinforcing ribs are symmetrically fixed at the front end and rear end of one side of the first hinge lug. A reinforcing rib guide rounded corner is fixedly provided between the auxiliary reinforcing rib, the main reinforcing rib, and the main mounting base, respectively. A first rounded corner transition area and a second rounded corner transition area are fixedly provided between the bottom end of the first hinge lug and the top of the main mounting base, respectively.

[0007] Optionally, the top of the second hinge lug is connected to a lubrication nozzle, and one side of the lubrication nozzle is connected to an oil injection nozzle.

[0008] Optionally, both the auxiliary reinforcing rib and the main reinforcing rib have several weight-reducing holes inside.

[0009] Optionally, the inner walls of the first hinge lug and the second hinge lug are respectively fitted with a first pin hole bushing and a second pin hole bushing, and an anti-friction pad is fitted between the inner walls of the first pin hole bushing and the second pin hole bushing. The inner wall of the anti-friction pad is fitted with a hinge pin.

[0010] Optionally, a retaining ring mounting groove is provided on one side of the first hinge lug, and a positioning retaining ring is fixedly sleeved on the inner wall of the retaining ring mounting groove.

[0011] Optionally, the top end of the main mounting base plate is provided with a plurality of positioning pin holes, and the top end of the main mounting base plate is provided with two mounting holes symmetrically.

[0012] The technical effects that can be achieved by the technical means of this utility model are as follows: In this invention, by setting main reinforcing ribs and auxiliary reinforcing ribs to jointly disperse stress, and by setting first and second rounded corner transition areas, and in conjunction with the reinforcing rib guide rounded corners, a synergistic flow guiding structure is constructed. The loads acting on the first hinge lug, the second hinge lug, the auxiliary reinforcing rib, and the main reinforcing rib are dispersed to the main mounting base through multiple paths. This transforms the local high stress peaks in traditional designs into widely distributed low stress areas, thereby significantly reducing the stress concentration coefficient at the bottom root of the first and second hinge lugs, and improving the fatigue life and overall load-bearing reliability of the hinge seat under alternating loads.

[0013] In this utility model, by setting a lubrication nozzle and an oil injection nozzle, lubricating oil is sprayed onto the outer wall of the anti-friction pad regularly, and in-situ lubrication maintenance is performed without disassembling the hinge pin, which reduces the wear and seizing risk of the friction pair and further ensures the long-term performance and safety of the structure from the perspective of suppressing wear stress. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the back of the present invention; Figure 3 for Figure 2 Enlarged 3D structural diagram at point A in the middle; Figure 4 This is a three-dimensional structural diagram of the top part of the first hinge lug of this utility model.

[0015] In the diagram: 1. Main mounting base plate; 2. Locating pin hole; 3. Mounting hole; 4. First rounded corner transition area; 5. First hinge lug; 6. Auxiliary reinforcing rib; 7. Reinforcing rib guide rounded corner; 8. Main reinforcing rib; 9. Weight reduction hole; 10. Anti-friction pad; 11. Lubrication nozzle; 12. Second hinge lug; 13. Second rounded corner transition area; 14. Oil injection nozzle; 15. First pin hole bushing; 16. Hinge pin; 17. Locating retaining ring; 18. Second pin hole bushing; 19. Retaining ring mounting groove. Detailed Implementation

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0017] In the description of this utility model, it should be noted that the orientations or positional relationships indicated by terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] A preferred embodiment of the low-stress-concentration hinge seat structure provided by this utility model is, for example... Figure 1 As shown in the figure: A hinge seat structure with low stress concentration includes a main mounting base 1, and a first hinge lug 5 and a second hinge lug 12 are symmetrically fixed on both sides of the top end of the main mounting base 1.

[0020] With the above scheme, the main mounting base plate 1 is used to connect this device with other equipment bodies, such as door frames or boxes, and the first hinge lug 5 and the second hinge lug 12 are used to support the hinge pin 16.

[0021] In this embodiment, a main reinforcing rib 8 and an auxiliary reinforcing rib 6 are fixedly provided between one side of the first hinge lug 5 and the top of the main mounting base plate 1, respectively. The two auxiliary reinforcing ribs 6 are symmetrically fixed at the front end and rear end of one side of the first hinge lug 5. A reinforcing rib guide rounded corner 7 is fixedly provided between the auxiliary reinforcing rib 6, the main reinforcing rib 8, and the main mounting base plate 1, respectively. A first rounded corner transition area 4 and a second rounded corner transition area 13 are fixedly provided between the bottom end of the first hinge lug 5 and the second hinge lug 12 and the top of the main mounting base plate 1, respectively.

[0022] Through the above scheme, the auxiliary reinforcing rib 6 and the main reinforcing rib 8 together connect the first hinge lug 5 to the main mounting base plate 1 to disperse stress. The first rounded transition area 4, the reinforcing rib guide rounded corner 7 and the second rounded transition area 13 are used to disperse the loads acting on the first hinge lug 5, the second hinge lug 12, the auxiliary reinforcing rib 6 and the main reinforcing rib 8 to the main mounting base plate 1 through multiple paths, transforming local high stress into widely distributed low stress.

[0023] In this embodiment, the top of the second hinge lug 12 is connected to a lubrication nozzle 11, and one side of the lubrication nozzle 11 is connected to an oil injection nozzle 14.

[0024] Through the above scheme, lubricant is introduced into the lubrication nozzle 11 through the anti-friction pad 10 and sprayed onto the outer wall of the anti-friction pad 10 to achieve a lubrication effect.

[0025] In this embodiment, both the auxiliary reinforcing rib 6 and the main reinforcing rib 8 have several weight-reducing holes 9 inside.

[0026] Through the above solution, the weight-reducing hole 9 reduces the overall weight without affecting the rigidity of the auxiliary reinforcing rib 6 and the main reinforcing rib 8.

[0027] In this embodiment, the inner walls of the first hinge lug 5 and the second hinge lug 12 are respectively fitted with a first pin hole bushing 15 and a second pin hole bushing 18. An anti-friction pad 10 is fitted between the inner walls of the first pin hole bushing 15 and the second pin hole bushing 18. A hinge pin 16 is fitted on the inner wall of the anti-friction pad 10.

[0028] With the above scheme, the first pin hole bushing 15 and the second pin hole bushing 18 are pressed into the inner walls of the first hinge lug 5 and the second hinge lug 12 respectively, which reduces wear. The anti-friction pad 10 is sleeved on the hinge pin 16 to prevent the first hinge lug 5 and the second hinge lug 12 from directly rubbing against the reinforcing rib guide fillet 7 and the main reinforcing rib 8.

[0029] In this embodiment, a retaining ring mounting groove 19 is provided on one side of the first hinge lug 5, and a positioning retaining ring 17 is fixedly sleeved on the inner wall of the retaining ring mounting groove 19.

[0030] By using the above method, the positioning retaining ring 17 is inserted into the inner wall of the retaining ring mounting groove 19 to complete the positioning of the hinge pin 16 and prevent it from moving axially and causing the hinge pin 16 to fall off between the first hinge lug 5 and the second hinge lug 12.

[0031] In this embodiment, the top of the main mounting substrate 1 is provided with a plurality of positioning pin holes 2, and the top of the main mounting substrate 1 is provided with two mounting holes 3 symmetrically.

[0032] In the above scheme, the positioning pin hole 2 is used for precise positioning in the early stage of installation, and the mounting hole 3 is used to finally fix the main mounting base plate 1, ensuring the stability of the installation.

[0033] Working principle: When operating and using this utility model, as follows... Figure 1 As shown in the figure, the main mounting base 1 is precisely fixed to the device body through the mounting holes 3 and positioning pin holes 2. When the load is transmitted to the first pin hole bushing 15 and the second pin hole bushing 18 through the hinge pin 16, the force is distributed to the first hinge lug 5 and the second hinge lug 12. During this process, the main reinforcing rib 8 and the auxiliary reinforcing rib 6 work together to efficiently disperse and guide the stress to the main mounting base 1 through the smooth reinforcing rib guide rounded corner 7 at their connection. At the same time, the first rounded corner transition area 4 and the second rounded corner transition area 13 effectively eliminate the stress concentration at the roots of the first hinge lug 5 and the second hinge lug 12. The lubrication nozzle 11 and oil injection nozzle 14 integrated inside the top of the second hinge lug 12 facilitate lubrication of the outer wall of the anti-friction pad 10. The anti-friction pad 10 is used to reduce friction between the first hinge lug 5 and the second hinge lug 12 and the reinforcing rib guide fillet 7 and the main reinforcing rib 8. In addition, the weight reduction hole 9 achieves weight reduction while ensuring the structural strength of the auxiliary reinforcing rib 6 and the main reinforcing rib 8. The hinge pin 16 is reliably fixed on one side by the positioning retaining ring 17 and the retaining ring mounting groove 19, thus jointly ensuring the stable, low-wear and long-life operation of the entire hinge seat structure under long-term high-load conditions.

[0034] The above are merely illustrative embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to this utility model.

Claims

1. A hinge seat structure with low stress concentration, comprising a main mounting base plate (1), characterized in that: The main mounting base plate (1) has a first hinge lug (5) and a second hinge lug (12) symmetrically fixed on both sides of its top end. A main reinforcing rib (8) and an auxiliary reinforcing rib (6) are fixedly provided between one side of the first hinge lug (5) and the top of the main mounting base (1). The two auxiliary reinforcing ribs (6) are symmetrically fixed at the front end and rear end of one side of the first hinge lug (5). A reinforcing rib guide rounded corner (7) is fixedly provided between the auxiliary reinforcing rib (6), the main reinforcing rib (8), and the main mounting base (1). A first rounded corner transition area (4) and a second rounded corner transition area (13) are fixedly provided between the bottom end of the first hinge lug (5) and the second hinge lug (12) and the top of the main mounting base (1).

2. The low-stress-concentration hinge seat structure according to claim 1, characterized in that: The top of the second hinge lug (12) is connected to a lubrication nozzle (11), and an oil injection nozzle (14) is connected to one side of the lubrication nozzle (11).

3. The hinge seat structure with low stress concentration according to claim 1, characterized in that: Both the auxiliary reinforcing rib (6) and the main reinforcing rib (8) have several weight-reducing holes (9) inside.

4. The hinge seat structure with low stress concentration according to claim 1, characterized in that: The inner walls of the first hinge lug (5) and the second hinge lug (12) are respectively fitted with a first pin hole bushing (15) and a second pin hole bushing (18). An anti-friction pad (10) is fitted between the inner walls of the first pin hole bushing (15) and the second pin hole bushing (18). A hinge pin (16) is fitted on the inner wall of the anti-friction pad (10).

5. A low-stress-concentration hinge seat structure according to claim 1, characterized in that: The first hinge lug (5) has a retaining ring mounting groove (19) on one side, and a positioning retaining ring (17) is fixedly sleeved on the inner wall of the retaining ring mounting groove (19).

6. The hinge seat structure with low stress concentration according to claim 1, characterized in that: The top of the main mounting base plate (1) has several positioning pin holes (2), and the top of the main mounting base plate (1) has two mounting holes (3) symmetrically opened.

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