Hinge device

Abstract

The utility model provides a hinge device which comprises a first hinge piece, a second hinge piece and a rotating shaft, the first hinge piece is provided with a first shaft sleeve, the second hinge piece is provided with a second shaft sleeve, the rotating shaft is sleeved with the first shaft sleeve and the second shaft sleeve, the hinge device further comprises a bearing with a tail, the bearing with the tail comprises a bearing body and a shell, and the bearing body is arranged in the shell. The shell is further provided with a connecting part, the connecting part is fixedly connected with one of the first shaft sleeve and the second shaft sleeve, and the rotating shaft is sleeved with the bearing body and the connecting part. According to the hinge device, relative rotation between the first hinge piece and the second hinge piece is improved through the bearing with the tail, and the bearing with the tail is fixedly connected to the first hinge piece or the second hinge piece, so that the bearing with the tail can be detached along with the first hinge piece or the second hinge piece, and the risk that the bearing with the tail falls off is avoided.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a hinge device. Background Technology

[0002] Hinges, as common connecting components in daily life, are widely used in doors, windows, and many other structures that require relative rotation. Traditional hinges mainly consist of leaf blades and a pivot; the leaf blades are fitted onto the pivot to allow rotation. However, existing hinge technology is relatively simple in structure and cannot meet the needs of some special applications. For example, on doors or windows that require frequent opening and closing, traditional hinges have a shorter lifespan and are prone to loosening and noise.

[0003] Building upon this, the hinge was improved by incorporating a bearing, thereby improving the relative rotation between the hinge flaps and the pivot, resulting in smoother flap rotation. During use, the bearing needs to be fitted onto the pivot so it can rotate relative to it. However, when the hinge is damaged and needs to be disassembled for repair, the bearing can easily slip off the pivot as the flaps separate, posing a risk of loss. Even if the bearing is not lost, a fallen bearing may be damaged, increasing repair costs. Utility Model Content

[0004] This invention provides a hinge device to solve the problem that bearings are prone to falling off during hinge maintenance in the prior art.

[0005] This utility model provides a hinge device, including a first leaf, a second leaf, and a rotating shaft. The first leaf is provided with a first bushing, and the second leaf is provided with a second bushing. Both the first bushing and the second bushing are sleeved on the rotating shaft. The device also includes a tail bearing, which includes a bearing body and a housing. The bearing body is disposed inside the housing, and the housing is further provided with a connecting part. The connecting part is fixedly connected to one of the first bushing or the second bushing, and both the bearing body and the connecting part are sleeved on the rotating shaft.

[0006] According to the present invention, a hinge device includes a plurality of tail bearings, each of which is connected to a first bushing or a second bushing, and the first bushing and the second bushing abut against each other through the tail bearings.

[0007] According to the present invention, the tail bearing is integrally formed with the first bushing or the tail bearing is integrally formed with the second bushing.

[0008] According to the present invention, a hinge device is provided in which the connecting part is embedded in the first bushing or the second bushing, thereby being fixedly connected with the first bushing or the second bushing.

[0009] According to the present invention, in a hinge device, the outer diameter of the connecting part gradually decreases along the embedding direction of the connecting part.

[0010] According to the present invention, a hinge device is provided, wherein the bearing body includes an upper cover plate, a lower cover plate and a plurality of steel balls. The upper cover plate and the lower cover plate are arranged opposite to each other. The upper cover plate has a first groove on the side facing the lower cover plate and a second groove on the side facing the upper cover plate. The plurality of steel balls are disposed between the upper cover plate and the lower cover plate and roll along the first groove and the second groove.

[0011] According to the present invention, the maximum depth of the first groove and the second groove is equal to one-third of the diameter of the steel ball.

[0012] According to the present invention, the distance between the upper cover plate and the lower cover plate is equal to one-third of the diameter of the steel ball.

[0013] According to the present invention, a hinge device is provided, wherein the upper cover plate is disposed inside the outer shell on the side away from the connecting part, the outer shell partially encloses the upper cover plate, and the top surface of the upper cover plate is higher than the top surface of the outer shell.

[0014] According to the present invention, the connecting part and the first bushing are interference fit, or the connecting part and the second bushing are interference fit.

[0015] This utility model provides a hinge device including a first leaf, a second leaf, a rotating shaft, and a tail bearing. Both the first and second leaf are fitted onto the rotating shaft, allowing them to rotate relative to it. Furthermore, this application includes a tail bearing connected to either the first or second leaf, enabling relative rotation between them and improving the rotational relationship between the two leaf pieces. The tail bearing is also fixedly connected, preventing it from falling off. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is an exploded view of the hinge device provided by this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the first blade provided by this utility model.

[0019] Figure 3 This is a cross-sectional view of the tail bearing provided by this utility model.

[0020] Figure 4 This is an exploded view of the tail bearing provided by this utility model.

[0021] Figure 5 This is a cross-sectional view of the tail bearing provided by this utility model after an explosion.

[0022] Figure label:

[0023] 1. First blade; 11. First bushing;

[0024] 2. Second blade; 21. Second bushing;

[0025] 3. Shaft;

[0026] 4. Tail bearing; 41. Bearing body; 411. Upper cover plate; 412. Lower cover plate; 413. Steel ball; 414. First groove; 415. Second groove; 42. Housing; 421. Connecting part. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] The following is combined Figure 1This invention describes a hinge device comprising a first leaf 1, a second leaf 2, and a rotating shaft 3. The first leaf 1 is provided with a first bushing 11, and the second leaf 2 is provided with a second bushing 21. Both the first bushing 11 and the second bushing 21 are fitted onto the rotating shaft 3. The hinge device also includes a tail bearing 4, which comprises a bearing body 41 and a housing 42. The bearing body 41 is disposed within the housing 42, and the housing 42 is further provided with a connecting portion 421. The connecting portion 421 is fixedly connected to either the first bushing 11 or the second bushing 21, and both the bearing body 41 and the connecting portion 421 are fitted onto the rotating shaft 3.

[0029] Please refer to the above as well. Figures 1 to 3 In this embodiment, the first page 1 has two first bushings 11, and the second page 2 has three second bushings 21 as an example. The three second bushings 21 on the second page 2 are located on the same side of the second page 2 and are arranged at intervals. Therefore, there are two gaps between the three second bushings 21. The two first bushings 11 on the first page 1 are aligned with the two gaps between the three second bushings 21 and inserted, so that the center lines of the first bushings 11 and the second bushings 21 are aligned in a straight line. Then, the center line of the rotating shaft 3 is aligned with the center of the first bushings 11 and the second bushings 21, so that the rotating shaft 3 can pass through the first bushings 11 and the second bushings 21.

[0030] When the first leaf 1 is fitted onto the rotating shaft 3 via the first bushing 11, and the second leaf 2 is fitted onto the rotating shaft 3 via the second bushing 21, the first leaf 1 and the second leaf 2 can rotate relative to each other. However, when the first leaf 1 and the second leaf 2 rotate relative to each other, the friction between the first leaf 1 and the second leaf 2 is relatively large, which will cause greater wear and reduce their service life.

[0031] Therefore, this application also includes a tail bearing 4. When the tail bearing 4 is installed on either the first leaf 1 or the second leaf 2, the first leaf 1 and the second leaf 2 can rotate relative to each other via the tail bearing 4, thereby making the relative rotation smoother, reducing friction, and extending service life. Figure 2 As shown, in this embodiment, the tail bearing 4 is installed on the first page 1 as an example. In different embodiments, the tail bearing 4 can also be installed on the second page 2; this is not a limitation. Please refer to the examples below. Figure 1 and Figure 2 Since the first leaf 1 is sleeved on the rotating shaft 3 through the first bushing 11, it can rotate relative to the shaft, so the tail bearing 4 is installed on the first bushing 11.

[0032] After the tail bearing 4 is installed, the first blade 1 comes into contact with the second blade 2 via the tail bearing 4. Compared to the sliding friction generated by the direct contact between the first blade 1 and the second blade 2, the tail bearing 4 transforms the relative rotation process between the first blade 1 and the second blade 2 into rolling friction, thereby reducing the coefficient of friction, reducing frictional force, and extending service life.

[0033] like Figures 3 to 5 As shown, the tail bearing 4 includes a bearing body 41 and a housing 42. The bearing body 41 is housed within the housing 42, thereby protecting the bearing body 41. Because the bearing body 41 needs to rotate relative to the housing, a sufficient gap is provided between the housing 42 and the bearing body 41 to allow the bearing body 41 to rotate, thereby preventing relative friction between the bearing body 41 and the inner wall of the housing 42.

[0034] Because the outer casing 42 needs to enclose the bearing body 41, the outer casing 42 is preferably cylindrical. Along the axial direction of the outer casing 42, one end of the outer casing 42 is provided with a connecting portion 421, through which the outer casing 42 is connected to the first bushing 11. The connection between the connecting portion 421 and the outer casing 42 can be a fixed connection or a relatively rotatable connection, but regardless of the connection method, the connecting portion 421 will not detach from the outer casing 42. When the connecting portion 421 and the outer casing 42 are fixedly connected, there is no risk of detachment, and the connecting portion 421 will cause the outer casing 42 to rotate relative to the bearing body 41. When the connecting portion 421 and the outer casing 42 are relatively rotatable, the connecting portion 421 will not cause the outer casing 42 to rotate after relative rotation. In this case, the connecting portion 421 needs to remain relatively fixed to a rotating part of the bearing body 41 in order for the connecting portion 421 to rotate relative to the bearing body 41. The bearing body 41 is located inside the housing 42, and the bearing body 41 will not detach from the housing 42. Therefore, the connecting part 421 will also not detach from the housing 42. Thus, the bearing body 41, the housing 42, and the connecting part 421 are integrated as a whole and will not separate.

[0035] Therefore, after the connecting part 421 is fixedly connected to the first bushing 11, the entire tail bearing 4 can be fixedly connected to the first bushing 11. The first bushing 11 is then fixedly connected to the first leaf 1, thus the tail bearing 4 is fixedly connected to the first leaf 1, thereby preventing the tail bearing 4 from falling off.

[0036] When the hinge assembly is damaged and needs to be disassembled for inspection and repair, the first hinge plate 1 and the second hinge plate 2 need to be removed from the pivot 3. Because the tail bearing 4 is fixedly connected to the first hinge plate 1, when removing the first hinge plate 1 from the pivot 3, the tail bearing 4 is removed along with it. Since the first hinge plate 1 is relatively large, it is easy to handle during disassembly, minimizing the risk of it falling. This reduces the risk of the tail bearing 4, which is fixedly connected to the first hinge plate 1, falling, thereby increasing the service life of the tail bearing 4.

[0037] Because the bearings used in hinges are small, precision parts, they are inconvenient to remove during disassembly of ordinary hinges, greatly increasing the risk of them falling out. Furthermore, their small size makes locating a fallen bearing even more difficult. Even if the bearing is found, it may have been damaged by the impact, affecting its normal operation. Therefore, falling bearings lead to a poor user experience.

[0038] In this application, the entire tail bearing 4 is fixedly connected to the first bushing 11 by the connecting part 421, thereby reducing the risk of the tail bearing 4 falling off, increasing the service life of the tail bearing 4, and improving the user experience.

[0039] In one embodiment, a plurality of tail bearings 4 are included, each tail bearing 4 being connected to a first bushing 11 or a second bushing 21, and the first bushing 11 and the second bushing 21 are mutually abutted by the tail bearing 4.

[0040] Because this embodiment has two first bushings 11 and three second bushings 21, there are a total of four abutment surfaces between the first bushings 11 and the second bushings 21. Preferably, four tail bearings 4 can be used, so that each abutment surface between the first bushings 11 and the second bushings 21 abuts against each other through the tail bearings 4. Figure 1 In this embodiment, two tail bearings 4 are used as an example. The two tail bearings 4 are respectively connected to the two first bushings 11, and are located at both ends along the axial direction of the rotating shaft 3. One tail bearing 4 is located at the upper end of the upper first bushing 11, and the other tail bearing 4 is located at the lower end of the lower first bushing 11. This symmetrical arrangement of the two tail bearings 4 ensures more even force distribution and avoids stress concentration.

[0041] In one embodiment, the tail bearing 4 is integrally formed with the first bushing 11 or the tail bearing 4 is integrally formed with the second bushing 21.

[0042] In this embodiment, the tail bearing 4 and the first bushing 11 are integrally formed as an example. During the production process, the tail bearing 4 and the first bushing 11 are designed to be integrally formed, so that the first leaf 1 carries the tail bearing 4 after leaving the factory, and the tail bearing 4 and the first leaf 1 are fixedly connected, which can prevent the tail bearing 4 from falling off. Therefore, in the process of assembling the first leaf 1, the second leaf 2 and the rotating shaft 3 together, the connection step between the tail bearing 4 and the first leaf 1 can be omitted, and the detachment of the tail bearing 4 can also be avoided. This not only improves the assembly efficiency, but also improves the yield of the finished hinge device.

[0043] In one embodiment, the connecting part 421 is embedded in the first bushing 11 or the second bushing 21, thereby being fixedly connected to the first bushing 11 or the second bushing 21.

[0044] Please refer to the above as well. Figures 1 to 3 In this embodiment, the connecting part 421 is embedded in the first bushing 11 as an example. Because the connecting part 421 needs to be embedded in the first bushing 11, the connecting part 421 is cylindrical, and its outer diameter corresponds to the inner diameter of the first bushing 11. Embedding the connecting part 421 in the first bushing 11 makes the connection between the connecting part 421 and the first bushing 11 more stable. At the same time, after the connecting part 421 is embedded in the first bushing 11, the connecting part 421 contacts the inner wall surface of the first bushing 11 through its outer wall surface, which can also increase the contact area, thereby reducing the pressure on the connecting part 421 when it is subjected to tangential force and improving the overall structural strength.

[0045] In this embodiment, the connecting part 421 is connected by embedding, which can improve the overall structural strength. In different embodiments, when the structural strength requirement is not high, the connecting part 421 can also be directly connected to the end face of the first bushing 11, thereby reducing the length of the connecting part 421 and saving materials.

[0046] In one embodiment, the connecting part 421 and the first bushing 11 are interference fits, or the connecting part 421 and the second bushing 21 are interference fits.

[0047] Please refer to the above as well. Figure 1 and Figure 2After the connecting part 421 is embedded into the first bushing 11, an interference fit is used between the connecting part 421 and the first bushing 11. This allows the connecting part 421 to remain relatively fixed by mutual compression after being embedded in the first bushing 11. Simultaneously, because the connecting part 421 and the first bushing 11 are fixed by an interference fit, the connecting part 421 can also be detached from the first bushing 11. Therefore, the fixed connection between the connecting part 421 and the first bushing 11 refers to the relatively fixed connection between them during use. In case of disassembly or repair, the connecting part 421 can also be removed, allowing for the removal and replacement of the tail bearing 4 if it is damaged, without needing to replace the entire first leaf 1, thus saving costs.

[0048] In different embodiments, different connection methods can also be used. For example, after the connecting part 421 is embedded in the first bushing 11, the connecting part 421 and the first bushing 11 are fixedly connected by adhesive using the large contact area between them. Furthermore, the connection method between the connecting part 421 and the first bushing 11 also includes welding, etc., which will not be described in detail here.

[0049] In one embodiment, the outer diameter of the connecting portion 421 gradually decreases along the embedding direction of the connecting portion 421. For example... Figure 3 As shown, the end of the connecting portion 421 furthest from the bearing body 41 is the entry end. Therefore, along the embedding direction of the connecting portion 421, the outer diameter of the connecting portion 421 gradually decreases, meaning the outer diameter of the entry end is the smallest. In this embodiment, the entry end of the connecting portion 421 can be chamfered. Because the connecting portion 421 needs to be embedded in the first bushing 11, the smallest outer diameter at the entry end allows for smoother embedding of the connecting portion 421 into the first bushing 11.

[0050] Furthermore, when the connecting part 421 and the first bushing 11 are fitted with an interference fit, the entry end of the connecting part 421 is chamfered, which allows the entry end of the connecting part 421 to preferentially enter the first bushing 11, and then drive the whole part to be embedded into the first bushing 11. In this embodiment, the outer diameter of the entry end of the connecting part 421 is minimized, which makes the embedding of the connecting part 421 more convenient.

[0051] In one embodiment, the bearing body 41 includes an upper cover plate 411, a lower cover plate 412, and a plurality of steel balls 413. The upper cover plate 411 and the lower cover plate 412 are arranged facing each other. The side of the upper cover plate 411 facing the lower cover plate 412 is provided with a first groove 414, and the side of the lower cover plate 412 facing the upper cover plate 411 is provided with a second groove 415. The plurality of steel balls 413 are disposed between the upper cover plate 411 and the lower cover plate 412 and roll along the first groove 414 and the second groove 415.

[0052] like Figure 3 As shown, because this application requires the bearing body 41 to be able to rotate relative to each other in two parts along the axis of the rotating shaft 3, which is different from the traditional bearing, which is divided into inner and outer rings for relative rotation, the bearing body 41 in this application includes an upper cover plate 411, a lower cover plate 412, and a plurality of steel balls 413. The plurality of steel balls 413 are disposed between the upper cover plate 411 and the lower cover plate 412, thereby enabling relative rotation between the upper cover plate 411 and the lower cover plate 412.

[0053] Furthermore, a first groove 414 and a second groove 415 are respectively provided on the upper cover plate 411 and the lower cover plate 412, making the rolling of the steel ball 413 smoother and thus reducing noise. In this embodiment, the connecting part 421 is provided on one side of the lower cover plate 412, and the connecting part 421 is fixedly connected to the first bushing 11, so the first bushing 11 rotates through the lower cover plate 412. Then the upper cover plate 411 abuts against the second bushing 21, and the second bushing 21 rotates through the upper cover plate 411.

[0054] When the first sheet 1 and the second sheet 2 rotate relative to each other, they do so through the upper cover plate 411 and the lower cover plate 412, respectively. Since a steel ball 413 is provided between the upper cover plate 411 and the lower cover plate 412, the relative rotation is achieved through the rolling of the steel ball 413, thereby reducing friction and noise.

[0055] In one embodiment, the maximum depth of the first groove 414 and the second groove 415 is equal to one-third of the diameter of the steel ball 413. In another embodiment, the distance between the upper cover plate 411 and the lower cover plate 412 is equal to one-third of the diameter of the steel ball 413.

[0056] In this embodiment, taking one-third of the diameter of the steel ball 413 as an example, it ensures that the ball 413 can roll smoothly in the first groove 414 and the second groove 415, while also preventing the steel ball 413 from falling off. At the same time, sufficient gaps are reserved between the upper cover plate 411 and the lower cover plate 412 to allow lubricant to enter, which can further reduce friction.

[0057] In one embodiment, the upper cover plate 411 is disposed inside the outer casing 42 on the side away from the connecting portion 421, the outer casing 42 partially covers the upper cover plate 411, and the top surface of the upper cover plate 411 is higher than the top surface of the outer casing 42.

[0058] Please refer to the above as well. Figures 1 to 3Because the upper cover plate 411 abuts against the second bushing 21 in this embodiment, the outer shell 42 is designed to partially enclose the upper cover plate 411, thereby preventing direct contact between the outer shell 42 and the second bushing 21. Since the second bushing 21 needs to rotate, if the outer shell 42 abuts against the second bushing 21, friction will occur between them, leading to wear and affecting their service life. Therefore, in this embodiment, the design of the outer shell 42 partially enclosing the upper cover plate 411, with the top surface of the upper cover plate 411 higher than the top surface of the outer shell 42, can prevent wear between the outer shell 42 and the second bushing 21, thereby extending their service life.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hinge device, comprising a first leaf (1), a second leaf (2), and a pivot (3), wherein the first leaf (1) is provided with a first bushing (11), the second leaf (2) is provided with a second bushing (21), and both the first bushing (11) and the second bushing (21) are fitted onto the pivot (3), characterized in that, Also includes: The bearing with a tail (4) includes a bearing body (41) and a housing (42). The bearing body (41) is disposed inside the housing (42). The housing (42) is also provided with a connecting part (421). The connecting part (421) is fixedly connected to one of the first bushing (11) or the second bushing (21). The bearing body (41) and the connecting part (421) are both sleeved on the rotating shaft (3).

2. The hinge device according to claim 1, characterized in that, It includes multiple tail bearings (4), each of which is connected to the first bushing (11) or the second bushing (21), and the first bushing (11) and the second bushing (21) abut against each other through the tail bearings (4).

3. The hinge device according to claim 1, characterized in that, The tail bearing (4) is integrally formed with the first bushing (11) or the tail bearing (4) is integrally formed with the second bushing (21).

4. The hinge device according to claim 3, characterized in that, The connecting part (421) is embedded in the first bushing (11) or the second bushing (21), thereby being fixedly connected to the first bushing (11) or the second bushing (21).

5. The hinge device according to claim 4, characterized in that, Along the embedding direction of the connecting part (421), the outer diameter of the connecting part (421) gradually decreases.

6. The hinge device according to claim 1, characterized in that, The bearing body (41) includes an upper cover plate (411), a lower cover plate (412), and a plurality of steel balls (413). The upper cover plate (411) and the lower cover plate (412) are arranged facing each other. The upper cover plate (411) has a first groove (414) on the side facing the lower cover plate (412), and the lower cover plate (412) has a second groove (415) on the side facing the upper cover plate (411). The plurality of steel balls (413) are disposed between the upper cover plate (411) and the lower cover plate (412) and roll along the first groove (414) and the second groove (415).

7. The hinge device according to claim 6, characterized in that, The maximum depth of the first groove (414) and the second groove (415) is equal to one-third of the diameter of the steel ball (413).

8. The hinge device according to claim 6, characterized in that, The distance between the upper cover plate (411) and the lower cover plate (412) is equal to one-third of the diameter of the steel ball (413).

9. The hinge device according to claim 6, characterized in that, The upper cover plate (411) is located inside the outer shell (42) on the side away from the connecting part (421). The outer shell (42) partially encloses the upper cover plate (411), and the top surface of the upper cover plate (411) is higher than the top surface of the outer shell (42).

10. The hinge device according to claim 4, characterized in that, The connecting part (421) and the first bushing (11) are in an interference fit, or the connecting part (421) and the second bushing (21) are in an interference fit.

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