Hydraulic hinge core rod and hydraulic hinge thereof

Abstract

The hydraulic hinge core rod comprises a short crankshaft, a long crankshaft, a positioning disc, a valve needle assembly, a one-way copper valve and the like, the hydraulic hinge core rod achieves rotation of the short crankshaft and up-and-down movement of the long crankshaft through guide heads which are matched with each other, and then opening and closing of the hinge are achieved. The hydraulic hinge is firm in guide structure, not prone to being blocked and abraded and long in service life.

Description

Technical Field

[0001] The utility model relates to a hydraulic hinge, in particular to a hydraulic hinge core rod and a hydraulic hinge. Background Art

[0002] Existing hydraulic hinges generally use latches for guidance. After long-term use, the latches will become stuck or even unusable due to wear and tear. The service life is short and the stability is difficult to guarantee. For example, the one-way opening and closing hydraulic buffer hinge of China Utility Model Patent CN208749258U, the hydraulic hinge mandrel of CN208220468U and the hydraulic hinge with it all use the latch-guided structure to achieve guidance. In addition, the existing hydraulic hinges are divided into upper and lower structures, and cannot be fixed at will, which is not convenient for installation and use. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the utility model is how to provide a hydraulic hinge core rod and a hydraulic hinge which are not easy to wear and have a long service life.

[0004] The technical solution of the utility model for solving the above technical problems is: a hydraulic hinge mandrel comprises a short crankshaft and a long crankshaft, a cylindrical first guide head is provided at one end of the short crankshaft, a first guide head is provided with a first groove arranged along a spiral line, the first guide head is provided with a first guide plate except the first groove, the first guide plate and the first groove are evenly and alternately arranged on the first guide head; a second guide head is provided at one end of the long crankshaft corresponding to the short crankshaft, the second guide head has the same structure as the first guide head, and the second guide head is provided with a second groove and a second guide plate correspondingly.

[0005] Furthermore, the number of the first grooves is one, two or three evenly arranged.

[0006] Furthermore, the first guide plate includes a parallel surface on the lower side and inclined surfaces on both sides of the parallel surface; the first groove includes a parallel surface on the upper side and inclined surfaces on both sides of the parallel surface.

[0007] Furthermore, a valve needle assembly is provided in the short crankshaft, a one-way copper valve is provided in the long crankshaft, the valve needle assembly is inserted into the one-way copper valve, and a corresponding avoidance hole is provided on the one-way copper valve; an oil circuit avoidance space is provided at the lower end of the valve needle assembly, an oil hole which is larger at the top and smaller at the bottom is provided on the one-way copper valve, and a corresponding oil-sealing steel ball is provided in the oil hole.

[0008] Furthermore, a first long guide groove is axially provided on the lower outer wall of the long crankshaft, and the hydraulic hinge core rod also includes a positioning plate. The lower side of the long crankshaft is inserted into the positioning plate, and a guide space is correspondingly provided on the positioning plate. A second guide groove is provided on the inner wall of the guide space corresponding to the first guide groove, and a guide steel ball is provided between the first guide groove and the second guide groove.

[0009] Furthermore, a spring is sleeved on the outer side of the long crankshaft, and two ends of the spring are respectively abutted against the lower end of the second guide head and the upper end of the positioning plate.

[0010] Furthermore, a copper bearing is provided on the short crankshaft at the upper end of the first guide head, the lower end of the copper bearing is threadedly connected to a cylinder bushing sleeved outside the spring, and the lower end of the cylinder bushing abuts against the upper end of the positioning plate.

[0011] Furthermore, a needle bearing is provided outside the positioning plate at the lower end of the guide space, a positioning cover is provided at the upper end of the short crankshaft, a threaded lower cover is provided at the lower end of the positioning plate, and the outer surface of the hydraulic hinge core rod is cylindrical.

[0012] A hydraulic hinge comprises any one of the hydraulic hinge core rods described above.

[0013] Furthermore, a decorative bearing ring and a hinge piece are provided on the outer side of the hydraulic hinge core rod, and the hinge piece includes a first hinge piece and a second hinge piece, the first hinge piece is connected to the threaded lower cover, and the second hinge piece is connected to the cylinder bushing.

[0014] The utility model has the following beneficial effects compared with the prior art: the hydraulic hinge mandrel of the utility model utilizes mutually cooperating guide heads to realize the rotation of the short crankshaft and the up and down movement of the long crankshaft, thereby realizing the opening and closing of the hinge, and utilizes the function of the guide surface to replace the guide of the axle pin, and the guide surface structure is not easy to wear, and is smoother and more stable to use. Moreover, the guide surface is used instead of the axle pin for guidance between the short crankshaft and the long crankshaft, and the guide structure is more stable, so it can be installed without distinguishing between the upper and lower parts, and is suitable for arbitrary installation. The hydraulic hinge guide structure of the utility model is firm, not easy to get stuck, not easy to wear, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the embodiment of the utility model Figure 1 ;

[0016] Figure 2 Schematic diagram of the embodiment of the utility model Figure 2 ;

[0017] Figure 3 The explosion of the utility model embodiment Figure 1 ;

[0018] Figure 4The explosion of the utility model embodiment Figure 2 ;

[0019] Figure 5 A schematic diagram of a short crankshaft according to an embodiment of the utility model;

[0020] Figure 6 A schematic diagram of a one-way copper valve according to an embodiment of the utility model;

[0021] Figure 7 Assembly of the utility model embodiment Figure 1 ;

[0022] Figure 8 Assembly of the utility model embodiment Figure 2 .

[0023] Figure numerals: 1. short crankshaft, 12. first guide head, 121. first groove, 122. first guide plate, 1221. parallel surface, 1222. inclined surface, 13. valve needle assembly, 131. oil circuit avoidance space, 2. long crankshaft, 22. second guide head, 221. second groove, 222. second guide plate, 23. one-way copper valve, 231. oil hole, 232. oil sealing steel ball, 24. first guide groove, 3. positioning plate, 31. second guide groove, 32. guide steel ball, 4. spring, 5. needle bearing, 6. copper bearing, 7. cylinder bushing, 8. positioning cover, 9. threaded lower cover, 10. decorative bearing ring, 11. hinge, 111. first hinge, 112. second hinge. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the embodiments are not intended to limit the present invention. All similar structures and similar variations of the present invention should be included in the protection scope of the present invention.

[0025] like Figure 1 and Figure 2 As shown, a hydraulic hinge includes a hydraulic hinge core rod, and a decorative bearing ring 10 and a hinge piece 11 are provided on the outer side of the hydraulic hinge core rod, and the hinge piece 11 is hinged on the outer side of the hydraulic hinge core rod. The hinge piece 11 includes a first hinge piece 111 and a second hinge piece 112, and the hinge piece 11 is hinged on the outer side of the hydraulic hinge core rod.

[0026] The hydraulic hinge mandrel includes a short crankshaft 1 and a long crankshaft 2, specifically, Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, the short crankshaft 1 and the long crankshaft 2 are both hollow structures. A cylindrical first guide head 12 is coaxially provided at one end of the short crankshaft 1. The first guide head 12 is provided with a first groove 121 arranged along a spiral line. The first guide head 12 is provided with a first guide piece 122 except the first groove 121. The first guide piece 122 and the first groove 121 are evenly and alternately arranged on the first guide head 12. The angle of the spiral line controls the angle of automatic rotation after the hinge is opened and closed. A second guide head 22 is provided at one end of the long crankshaft 2 corresponding to the short crankshaft 1. The second guide head 22 has the same structure as the first guide head 12. The second guide head 22 is obtained by vertically rotating the first guide head 12 by 180° and fixed on the long crankshaft 2. The second guide head 22 is provided with a second groove 221 and a second guide piece 222. The first guide head 12 and the second guide head 22 cooperate with each other. When the hinge is closed, the second guide piece is screwed into the first groove, and the first guide piece is screwed into the second groove. The first groove 121 is evenly arranged in one, two or three, and correspondingly, the first guide plate, the second groove and the second guide plate are also one, two or three; the groove and the guide plate divide the corresponding guide head equally, such as Figure 5 As shown, two grooves are respectively arranged on the guide head of this embodiment, and two guide plates are correspondingly arranged. The short crankshaft 1 and the long crankshaft 2 utilize the guiding effect between the guide heads, and when the short crankshaft 1 rotates, the long crankshaft 2 is pushed to move downward.

[0027] Specifically, Figure 5 As shown, the first guide piece 122 includes a parallel surface 1221 at the bottom and inclined surfaces 1222 at both sides of the parallel surface 1221; the first groove 121 includes a parallel surface at the top and inclined surfaces at both sides of the parallel surface, the inclined surface of the first guide piece coincides with the inclined surface of the first groove, and the structure of the second groove and the second guide piece is the same as that of the first guide piece and the first groove. When rotating, the guiding is achieved by the interaction of the corresponding inclined surfaces on the two guide heads.

[0028] In this embodiment, in addition to the long crankshaft and the short crankshaft, the following structures are also included: Figure 3 and Figure 4 As shown, the short crankshaft 1 is provided with a valve needle assembly 13, the long crankshaft 2 is provided with a one-way copper valve 23, the valve needle assembly 13 is inserted into the one-way copper valve 23, and the one-way copper valve 23 is provided with a corresponding avoidance hole; the lower end of the valve needle assembly 13 is provided with an oil circuit avoidance space 131, as shown in FIG. Figure 6As shown, the one-way copper valve 23 is provided with an oil hole 231 that is larger at the top and smaller at the bottom, and a matching oil-sealing steel ball 232 is provided in the oil hole 231. A long first guide groove 24 is axially provided on the lower outer wall of the long crankshaft 2, and the hydraulic hinge mandrel also includes a positioning disk 3. The lower side of the long crankshaft 2 is inserted into the positioning disk 3, and a guide space is correspondingly provided on the positioning disk 3. A second guide groove 31 is provided on the inner wall of the guide space corresponding to the first guide groove 24, and a guide steel ball 32 is provided between the first guide groove 24 and the second guide groove 31. The guide grooves can also be set as needed. As shown in the figure, there are three first guide grooves and two second guide grooves in this embodiment. A spring 4 is sleeved on the outer side of the long crankshaft 2, and the two ends of the spring 4 are respectively abutted against the lower end of the second guide head 22 and the upper end of the positioning disk 3. The short crankshaft 1 at the upper end of the first guide head 12 is provided with a copper bearing 6, the lower end of the copper bearing 6 is threadedly connected to the cylinder bushing 7 that is sleeved outside the spring 4, and the lower end of the cylinder bushing 7 is against the upper end of the positioning plate 3. The positioning plate 3 at the lower end of the guide space is provided with a needle bearing 5, the upper end of the short crankshaft 1 is provided with a positioning cover 8, the lower end of the positioning plate 3 is provided with a threaded lower cover 9, and the outer surface of the hydraulic hinge mandrel is cylindrical. The first hinge piece 111 is connected to the threaded lower cover, and the second and blades 112 are connected to the cylinder bushing.

[0029] Working principle: When the first hinge 111 and the second hinge 112 are opened, the short crankshaft 1 rotates, and the long crankshaft 2 moves downward due to the downward thrust of the short crankshaft 1; when the external force disappears, the long crankshaft moves upward due to the elastic force of the spring, and the short crankshaft 1 rotates in the opposite direction under the action of the inclined surface, thereby realizing the automatic closing of the hinge, and adjusting the closing speed by moving the intermediate hydraulic valve needle up and down, thereby driving the automatic closing of the door.

[0030] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. Hydraulic hinge mandrel, characterized in that: The invention comprises a short crankshaft (1) and a long crankshaft (2), wherein a cylindrical first guide head (12) is provided at one end of the short crankshaft (1), a first groove (121) arranged along a spiral line is provided on the first guide head (12), a first guide plate (122) is provided on the first guide head (12) except the first groove (121), and the first guide plate (122) and the first groove (121) are evenly and alternately arranged on the first guide head (12); a second guide head (22) is provided at one end of the long crankshaft (2) corresponding to the short crankshaft (1), the second guide head (22) has the same structure as the first guide head (12), and the second guide head (22) is provided with a second groove (221) and a second guide plate (222) correspondingly.

2. The hydraulic hinge mandrel according to claim 1, characterized in that: The number of the first grooves (121) is one, two or three evenly arranged.

3. The hydraulic hinge mandrel according to claim 2, characterized in that: The first guide plate (122) comprises a parallel surface (1221) at the lower side and inclined surfaces (1222) at both sides of the parallel surface; the first groove (121) comprises a parallel surface at the upper side and inclined surfaces at both sides of the parallel surface.

4. The hydraulic hinge mandrel according to claim 3, characterized in that: The short crankshaft (1) is provided with a valve needle assembly (13), the long crankshaft (2) is provided with a one-way copper valve (23), the valve needle assembly (13) is inserted into the one-way copper valve (23), and the one-way copper valve (23) is provided with a corresponding avoidance hole; the lower end of the valve needle assembly (13) is provided with an oil circuit avoidance space (131), the one-way copper valve (23) is provided with an oil hole (231) which is larger at the top and smaller at the bottom, and a matching oil sealing steel ball (232) is provided in the oil hole (231).

5. The hydraulic hinge mandrel according to claim 4, characterized in that: A first long guide groove (24) is axially arranged on the lower outer wall of the long crankshaft (2); the hydraulic hinge mandrel also includes a positioning plate (3); the lower side of the long crankshaft (2) is inserted into the positioning plate (3); a guide space is correspondingly arranged on the positioning plate (3); a second guide groove (31) is correspondingly arranged on the inner wall of the guide space in correspondence with the first guide groove (24); and a guide steel ball (32) is arranged between the first guide groove (24) and the second guide groove (31).

6. The hydraulic hinge mandrel according to claim 5, characterized in that: A spring (4) is sleeved on the outside of the long crankshaft (2), and two ends of the spring (4) respectively abut against the lower end of the second guide head (22) and the upper end of the positioning plate (3).

7. The hydraulic hinge mandrel according to claim 6, characterized in that: A copper bearing (6) is provided on the short crankshaft (1) at the upper end of the first guide head (12); the lower end of the copper bearing (6) is threadedly connected to a cylinder bushing (7) sleeved outside the spring (4); the lower end of the cylinder bushing (7) abuts against the upper end of the positioning plate (3).

8. The hydraulic hinge mandrel according to claim 7, characterized in that: The positioning plate (3) at the lower end of the guide space is provided with a needle bearing (5) outside, the upper end of the short crankshaft (1) is provided with a positioning cover (8), the lower end of the positioning plate (3) is provided with a threaded lower cover (9), and the outer surface of the hydraulic hinge core rod is cylindrical.

9. A hydraulic hinge, characterized in that: It comprises the hydraulic hinge mandrel as described in any one of claims 1 to 8.

10. The hydraulic hinge according to claim 9, characterized in that: A decorative bearing ring (10) and a hinge piece (11) are provided on the outer side of the hydraulic hinge core rod. The hinge piece (11) comprises a first hinge piece (111) and a second hinge piece (112). The first hinge piece (111) is connected to the threaded lower cover, and the second hinge piece (112) is connected to the cylinder bushing.

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