Hinge

Abstract

The utility model relates to a hinge which comprises a first hinge piece, a second hinge piece, a middle shaft sleeve and a shaft core, one side of the first hinge piece is provided with at least two first sleeves arranged at intervals, one side of the second hinge piece is provided with a second sleeve corresponding to the position between the two adjacent first sleeves, and the middle shaft sleeve is inserted into the second sleeve and fixedly connected with the second sleeve. The shaft core penetrates through the middle shaft sleeve and is fixedly connected with the middle shaft sleeve, the upper end of the shaft core is inserted into the first sleeve at the upper end of the first hinge piece, the lower end of the shaft core is inserted into the first sleeve at the lower end of the first hinge piece, and the two ends of the shaft core are rotationally matched with the corresponding first sleeves; the bearing is arranged between the first sleeve and the second sleeve, the two ends of the shaft core penetrate through the bearing and extend into the first sleeve, the bearing comprises an outer sleeve, two neck bushes and two rubber mats, the two neck bushes and the rubber mats are all installed in the outer sleeve, the neck bushes are oppositely arranged, and the two rubber mats are located between the two neck bushes. By the adoption of the technical scheme, the bearing is additionally arranged between the first sleeve and the second sleeve, the bearing capacity of the hinge is improved, force is firstly exerted on a shell of the bearing and then transmitted to the inside, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware, in particular to a hinge. Background Art

[0002] A hinge is often of a two-fold type and consists of a pair of metal or non-metal blades connected by a pin. It is a component that connects two parts of an object and enables them to move.

[0003] The existing hinge usually includes a first hinge piece and a second hinge piece. At least two first sleeves are arranged at one side of the first hinge piece at intervals. A second sleeve is arranged at one side of the second hinge piece corresponding to the space between two adjacent first sleeves. It also includes a middle shaft sleeve and a shaft core. The middle shaft sleeve is inserted into the second sleeve and fixedly connected to the second sleeve. The shaft core penetrates through the middle shaft sleeve and is rotationally matched with the middle shaft sleeve. The upper end of the shaft core is inserted into the first sleeve at the upper end of the first hinge piece, and the lower end of the shaft core is inserted into the first sleeve at the lower end of the first hinge piece. And both ends of the shaft core are fixedly connected to the corresponding first sleeves.

[0004] In recent years, the market demand for high-grade anti-theft doors has increased. There are higher requirements for the delicate appearance design of high-grade anti-theft doors and the matching accuracy between the door frame and the door leaf. Moreover, due to the structure and material of the door leaf, the weight of the door leaf is getting heavier and heavier. Therefore, when the above hinge is applied to a door body, the bearing capacity of the hinge itself is relatively low, and it cannot withstand too much external force, and it is prone to damage after long-term use. Summary of the Invention

[0005] The purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a hinge, which adds a bearing between the first sleeve and the second sleeve to improve the bearing capacity of the hinge. When in use, the force first acts on the outer shell of the bearing and then is transmitted to the inside, and it has a long service life.

[0006] Technical solution of the utility model: A hinge, comprising a first hinge piece, a second hinge piece, a middle shaft sleeve and a shaft core. At least two first sleeves are provided at one side of the first hinge piece at intervals. A second sleeve is provided at one side of the second hinge piece corresponding to the space between two adjacent first sleeves. The middle shaft sleeve is inserted into the second sleeve and fixedly connected to the second sleeve. The shaft core penetrates through the middle shaft sleeve and is fixedly connected to the middle shaft sleeve. The upper end of the shaft core is inserted into the first sleeve at the upper end of the first hinge piece, and the lower end of the shaft core is inserted into the first sleeve at the lower end of the first hinge piece. Both ends of the shaft core are rotatably matched with the corresponding first sleeves. It further includes a bearing, an upper shaft sleeve and a lower shaft sleeve. The bearing is arranged between the first sleeve and the second sleeve. The end of the shaft core passes through the bearing and extends into the first sleeve. The bearing includes an outer sleeve, two inner bushings and two rubber pads. The two inner bushings and the rubber pads are all installed in the outer sleeve, and the inner bushings are arranged oppositely. The two rubber pads are located between the two inner bushings. The upper shaft sleeve is located in the first sleeve at the upper end of the first hinge piece and is fixedly connected to the corresponding first sleeve. The lower shaft sleeve is located in the first sleeve at the lower end of the first hinge piece and is fixedly connected to the corresponding first sleeve. The end of the shaft core extends into the upper and lower shaft sleeves and is rotatably matched with the upper and lower shaft sleeves.

[0007] With the above technical solution, a bearing is added between the first sleeve and the second sleeve, so that the force acts on the bearing, first on the outer sleeve and then transmitted to the inside, with good bearing capacity, long overall service life of the hinge. The setting of the upper and lower shaft sleeves makes the cooperation between the shaft core and the corresponding first sleeve better, making the whole hinge stronger and with a long service life.

[0008] Further setting of the utility model: The inside of the outer sleeve is hollow. At least one side of the outer sleeve is provided with an opening for the inner bushing and the rubber pad to enter and exit the hollow part of the outer sleeve and a flanging extending towards the opening direction. The inner bushing is in contact with the flanging.

[0009] With the above further setting, it is convenient for installation. The inner bushing and the rubber pad can be sequentially placed into the hollow part of the outer sleeve from the opening. The setting of the flanging prevents the inner bushing and the rubber pad from detaching from the outer sleeve, and the structure is stable.

[0010] Another further setting of the utility model: The shaft core includes an upper shaft body and a lower shaft body. The upper shaft body and the lower shaft body are separately arranged or integrally arranged. The upper shaft body is rotatably matched with the upper shaft sleeve, and the lower shaft body is rotatably matched with the lower shaft sleeve.

[0011] With the above another further setting, the coaxiality is high and there is no abnormal noise after long-term use.

[0012] A further improvement of the present utility model: It further includes an upper cap head and a lower cap head. The upper cap head is located in the first sleeve at the upper end of the first hinge piece and is fixedly connected to the corresponding first sleeve. The upper cap head and the upper shaft sleeve are integrally formed or separately arranged. The lower cap head is arranged in the first sleeve at the lower end of the first hinge piece and is fixedly connected to the corresponding first sleeve. The lower cap head and the lower shaft sleeve are integrally formed or separately arranged.

[0013] With the above further improvement, it is more aesthetically pleasing, the hinge has good sealing performance, and prevents the leakage of lubricating oil.

[0014] A further improvement of the present utility model: The upper cap head is located above the upper end of the shaft core, and the lower cap head is located below the lower end of the shaft core. Both the upper cap head and the lower cap head include a columnar part and a retaining piece. The columnar part is located in the first sleeve and is knurled, and the retaining piece is located outside the first sleeve.

[0015] Both the upper cap head and the lower cap head are located outside the first sleeve. Axial holes are provided on both the upper shaft sleeve and the lower shaft sleeve. The end of the shaft core extends into the axial holes and rotates relative to the shaft sleeve within the axial holes.

[0016] With the above further improvement, the structure between the cap head and the first sleeve is firm, and the hinge has good sealing performance, preventing the leakage of lubricating oil.

[0017] A further improvement of the present utility model: The upper shaft sleeve and the lower shaft sleeve are in interference fit with the corresponding first sleeve. A number of convex points are provided on the outer side walls of the upper shaft sleeve and the lower shaft sleeve, and a number of pressing teeth are provided on the inner side wall of the first sleeve. Each convex point cooperates with the pressing teeth.

[0018] With the above further improvement, the cooperation between the upper and lower shaft sleeves and the corresponding first sleeves is better, and the structure is firm.

[0019] A further improvement of the present utility model: Each first sleeve and the second sleeve are formed by rolling up a substrate, and the two side edges of the substrate are joined together by welding.

[0020] With the above further improvement, it is more aesthetically pleasing, and the structures of the first sleeve and the second sleeve are more firm. BRIEF DESCRIPTION OF THE DRAWINGS <C

[0021] Figure 1 It is an exploded view of the present utility model in a specific embodiment when there are two first sleeves;

[0022] Figure 2 It is a cross-sectional view of the hinge of the present utility model in a specific embodiment when there are two first sleeves;

[0023] Figure 3 It is an exploded view of the bearing of the present utility model in a specific embodiment;

[0024] Figure 4 is the top view of the upper bushing in the specific embodiment of the present utility model;

[0025] Figure 5 is the top view of the first hinge piece in the specific embodiment of the present utility model;

[0026] Figure 6 is the exploded view when there are three first sleeves in the specific embodiment of the present utility model;

[0027] Figure 7 is the cross-sectional view of the hinge when there are three first sleeves in the specific embodiment of the present utility model. Detailed implementation manners

[0028] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0029] It should be noted that in the description of the present utility model, all directional indications (such as up, down, front, back...) are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present utility model, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] Such as Figures 1-7As shown in the figure, a hinge includes a first hinge piece 1, a second hinge piece 2, a middle shaft sleeve 3 and a shaft core 4. At least two first sleeves 11 are provided on one side of the first hinge piece 1 at intervals. A second sleeve 21 is provided on one side of the second hinge piece 2 corresponding to the space between two adjacent first sleeves 11. The number of first sleeves can be two, three, four, etc., and the corresponding number of second sleeves can be one, two, three, etc. The middle shaft sleeve 3 is inserted into the second sleeve 21 and fixedly connected to the second sleeve 21. The shaft core 4 penetrates through the middle shaft sleeve 3 and is fixedly connected to the middle shaft sleeve 3. The fixed connection refers to welding or interference fit. In this application, it specifically refers to interference fit. The upper end of the shaft core 4 is inserted into the first sleeve 11 at the upper end of the first hinge piece 1, and the lower end of the shaft core 4 is inserted into the first sleeve 11 at the lower end of the first hinge piece 1. The end of the shaft core 4 is rotatably matched with the corresponding first sleeve 11. It also includes a bearing 5, an upper shaft sleeve 6 and a lower shaft sleeve 7. The bearing 5 is arranged between the first sleeve 11 and the second sleeve 21. Both ends of the shaft core 4 pass through the bearing 5 and extend into the first sleeve 11. The bearing 5 includes an outer sleeve 51, two inner bushings 52 and two rubber pads 53. The two inner bushings 52 and the rubber pads 53 are all installed in the outer sleeve 52, and the inner bushings 52 are arranged opposite to each other. The two rubber pads 53 are located between the two inner bushings 52. The upper shaft sleeve 6 is located in the first sleeve 11 at the upper end of the first hinge piece 1 and is fixedly connected to the corresponding first sleeve 11. The lower shaft sleeve 7 is located in the first sleeve 11 at the lower end of the first hinge piece 1 and is fixedly connected to the corresponding first sleeve 11. The end of the shaft core 4 extends into the upper and lower shaft sleeves, 6 and 7, and is rotatably matched with the upper and lower shaft sleeves 6 and 7. The setting of the upper and lower shaft sleeves 6 and 7 makes the cooperation between the shaft core 4 and the corresponding first sleeve 11 better, making the whole hinge stronger and having a long service life. The outer sleeve is made of stainless steel material, and the rubber pad is a plastic pad. Adding the bearing 5 between the first sleeve 11 and the second sleeve 21 makes the force act on the bearing, and first act on the outer sleeve and then transfer to the inside. The two rubber pads contact each other under the action of force, with good load-bearing capacity, making the whole hinge have a long service life. The shaft core 4 includes an upper shaft body and a lower shaft body. The upper shaft body and the lower shaft body are separately arranged or integrally arranged. The upper shaft body is rotatably matched with the upper shaft sleeve, and the lower shaft body is rotatably matched with the lower shaft sleeve.

[0033] Specifically, for the installation of the inner bushing and the rubber pad, the inside of the outer sleeve 51 is hollow. At least one side of the outer sleeve 51 is provided with an opening 511 for the inner bushing 52 and the rubber pad 53 to enter and exit the hollow part 510 of the outer sleeve 51 and a flanging 512 extending in the direction of the opening 511. The inner bushing 52 contacts the flanging 512, which is convenient for installation. The inner bushing 52 and the rubber pad 53 can be sequentially placed into the hollow part 510 of the outer sleeve 51 from the opening 511. The setting of the flanging 512 prevents the inner bushing 52 and the rubber pad 53 from detaching from the outer sleeve 51, and the structure is stable.

[0034] It further includes an upper cap head 8 and a lower cap head 9. The upper cap head 8 is located in a first sleeve 11 at the upper end of the first hinge piece 1 and is fixedly connected to the corresponding first sleeve 11. The upper cap head 8 and the upper shaft sleeve 6 are integrally formed or separately arranged. The lower cap head 9 is arranged in the first sleeve 11 at the lower end of the first hinge piece 1 and is fixedly connected to the corresponding first sleeve 11. The lower cap head 9 and the lower shaft sleeve 7 are integrally formed or separately arranged, which is more beautiful, makes the hinge have good sealing performance, and prevents lubricating oil from leaking out.

[0035] When the cap head and the shaft sleeve are separately arranged, the upper cap head 8 is located above the upper end of the shaft core 4, and the lower cap head 9 is located below the lower end of the shaft core 4. The upper cap head 8 and the lower cap head 9 both include columnar parts 81, 91 and blocking pieces 82, 92. The columnar parts 81, 91 are located in the first sleeve 11 and are knurled, and the blocking pieces 82, 92 are located outside the first sleeve 11, making the structure between the cap head and the first sleeve 11 firm, and making the hinge have good sealing performance and preventing lubricating oil from leaking out.

[0036] When the cap head and the shaft body are integrally formed, the upper cap head 8 and the lower cap head 9 are both located outside the first sleeve 11. Shaft holes are provided on both the upper shaft sleeve 6 and the lower shaft sleeve 7. The end of the shaft core 4 extends into the shaft hole and rotates relative to the shaft sleeve in the shaft hole.

[0037] The upper shaft sleeve 6 and the lower shaft sleeve 7 are in interference fit with the corresponding first sleeve 11. A number of convex points 61 are provided on the outer side walls of the upper shaft sleeve 6 and the lower shaft sleeve 7, and a number of pressing teeth are provided on the inner side wall of the first sleeve 11. Each convex point 61 cooperates with the pressing teeth, making the cooperation between the upper and lower shaft sleeves 6, 7 and the corresponding first sleeve 11 better and the structure firmer.

[0038] Each of the first sleeve 11 and the second sleeve 21 is formed by rolling up a base plate. The two side edges of the base plate are adhered to each other by welding, and there is no gap after welding on both side edges, which is more beautiful and makes the structure of the first sleeve 11 and the second sleeve 21 firmer.

Claims

1. A hinge, comprising a first hinge piece (1), a second hinge piece (2), a middle shaft sleeve (3) and a shaft core (4). At least two first sleeves (11) are arranged at one side of the first hinge piece (1) at intervals. A second sleeve (21) is arranged at one side of the second hinge piece (2) corresponding to the space between two adjacent first sleeves (11). The middle shaft sleeve (3) is inserted into the second sleeve (21) and fixedly connected to the second sleeve (21). The shaft core (4) penetrates through the middle shaft sleeve (3) and is fixedly connected to the middle shaft sleeve (3). The upper end of the shaft core (4) is inserted into the first sleeve (11) at the upper end of the first hinge piece (1), and the lower end of the shaft core (4) is inserted into the first sleeve (11) at the lower end of the first hinge piece (1). It is characterized in that, It further includes a bearing (5), an upper bushing (6) and a lower bushing (7). The bearing (5) is arranged between the first sleeve (11) and the second sleeve (21). The end of the shaft core (4) passes through the bearing (5) and extends into the first sleeve (11). The bearing (5) includes an outer sleeve (51), two inner bushings (52) and two rubber pads (53). The two inner bushings (52) and the rubber pads (53) are all installed in the outer sleeve (51), and the two inner bushings are arranged oppositely. The two rubber pads (53) are located between the two inner bushings (52). The upper bushing (6) is located in the first sleeve (11) at the upper end of the first hinge piece (1), and the upper bushing (6) is fixedly connected to the corresponding first sleeve (11). The lower bushing (7) is located in the first sleeve (11) at the lower end of the first hinge piece (1), and the lower bushing (7) is fixedly connected to the corresponding first sleeve (11). The end of the shaft core (4) extends into the upper and lower bushings and is rotationally matched with the upper and lower bushings.

2. The hinge according to claim 1, wherein The interior of the outer sleeve (51) is hollow. At least one side of the outer sleeve (51) is provided with an opening (511) for the inner bushing (52) and the rubber pad (53) to enter and exit the hollow part of the outer sleeve (51) and a flanging (512) extending towards the opening (511). The inner bushing (52) is in contact with the flanging (512).

3. The hinge according to claim 1 or 2, characterized in that, The shaft core (4) includes an upper shaft body and a lower shaft body. The upper shaft body and the lower shaft body are separately arranged or integrally arranged. The upper shaft body is rotationally matched with the upper bushing (6), and the lower shaft body is rotationally matched with the lower bushing (7).

4. The hinge according to claim 3, characterized in that, It further includes an upper cap head (8) and a lower cap head (9). The upper cap head (8) is located in the first sleeve (11) at the upper end of the first hinge piece (1) and is fixedly connected to the corresponding first sleeve (11). The upper cap head (8) and the upper bushing (6) are integrally formed or separately arranged. The lower cap head (9) is arranged in the first sleeve (11) at the lower end of the first hinge piece (1) and is fixedly connected to the corresponding first sleeve (11). The lower cap head (9) and the lower bushing (7) are integrally formed or separately arranged.

5. The hinge according to claim 4, characterized in that, The upper cap head (8) is located above the upper end of the shaft core (4), and the lower cap head (9) is located below the lower end of the shaft core (4). The upper cap head (8) and the lower cap head (9) both include a columnar part (81, 91) and a retaining piece (82, 92). The columnar parts (81, 91) are located in the first sleeve (11) and are knurled. The retaining pieces (82, 92) are located outside the first sleeve (11).

6. The hinge according to claim 4, wherein, The upper cap head (8) and the lower cap head (9) are both located outside the first sleeve (11). Shaft holes are provided on both the upper bushing (6) and the lower bushing (7). The end of the shaft core (4) extends into the shaft holes and rotates relative to the bushings in the shaft holes.

7. The hinge according to claim 1 or 2, characterized in that, The upper bushing (6) and the lower bushing (7) are in interference fit with the corresponding first sleeve (11). A number of convex points are provided on the outer side walls of the upper bushing (6) and the lower bushing (7), and a number of pressing teeth are provided on the inner side wall of the first sleeve. Each convex point is matched with the pressing teeth.

8. The hinge according to claim 1 or 2, characterized in that, Each first sleeve (11) and second sleeve (21) is formed by rolling up a substrate, and the two side edges of the substrate are joined together by welding.

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