Hinge shaft core convenient for speed regulation

Abstract

The utility model relates to the technical field of hydraulic hinges, in particular to a hinge shaft core convenient for speed regulation, which comprises a core shell, a valve core module is arranged at one end of the core shell, a conical valve core is elastically arranged in the valve core module, a movable core ejecting piece is arranged on the outer side of the core shell, a conical section is arranged on the core ejecting piece, and the valve core module is arranged on the conical section. The core ejecting piece drives the conical valve core to stretch out and draw back in the valve core module in the moving process; according to the hinge shaft core, the core ejecting piece is arranged on the outer side of the core shell, and during adjustment, only the core ejecting piece on the outer side of the core shell needs to be adjusted, so that the core ejecting piece moves, the conical section is driven to move, the position of the conical valve core elastically ejected on the conical section is changed, and the conical valve core stretches out and draws back in the valve core module; in the adjusting process, it is not needed to stretch into the shaft core for operation, the situation that adjustment is affected by insufficient operation space caused by a door frame and the like can be prevented, and overall operation is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic hinges, in particular to a hinge shaft core which is convenient for speed regulation. Background Art

[0002] Hydraulic hinges usually achieve a buffering function by driving the piston head inside the shaft core to move during the door opening and closing process, so that the hydraulic oil is switched between the two oil pressure chambers through the flow difference.

[0003] For example, the hydraulic hinge core shaft and the hydraulic hinge having the same disclosed in Chinese patent document CN208220468U, wherein the hydraulic hinge core shaft includes an outer shell, an axis core, a piston, a valve seat and a speed regulating oil core, the valve seat is arranged at the upper end of the longitudinal through hole of the piston, and the valve seat can move along the axial direction of the piston. As the oil pressure difference between the pressurized oil chamber and the oil storage chamber changes, the valve seat can selectively form an oil passage with the piston or block the longitudinal through hole of the piston. The middle part of the valve seat has a speed regulating valve hole arranged through the axial direction, the speed regulating oil core is conical, and the lower end of the speed regulating oil core passes through the speed regulating valve hole and extends into the longitudinal through hole of the piston.

[0004] From the drawings in the specification disclosed in the above-mentioned prior art, it can be seen that the speed regulating oil core is cone-shaped as a whole, a spiral hole is provided in the middle of the cover, and the upper end of the speed regulating oil core is screwed into the spiral hole of the cover. That is to say, when adjusting the speed, it is necessary to insert the tool into the cover and twist it, but the hydraulic hinge is usually installed vertically, that is, the spiral hole of the cover can only face upward or downward, which makes it inconvenient for the tool to be inserted into the cover for operation. Even if it can be inserted into the cover, the twisting operation is not convenient under the limit of the door frame. Utility Model Content

[0005] In order to overcome the defects of the prior art, the utility model provides a hinge shaft core that is easy to adjust the speed to solve the above problems.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a hinge shaft core that is easy to adjust the speed, including a core shell, a valve core module is provided at one end of the core shell, a conical valve core is elastically provided in the valve core module, a movable top core member is provided on the outer side of the core shell, and a conical section is provided on the top core member so that the conical valve core can be driven to expand and contract in the valve core module during the movement of the top core member.

[0007] In the above-mentioned hinge shaft core that is easy to adjust the speed, the valve core module includes a valve seat installed in one end of the core shell, the valve seat has a valve core cavity, a valve core head is elastically installed in the valve core cavity, one end of the conical valve core is connected to one end of the valve core head through a valve core connecting rod, and the other end of the valve core head is provided with a top pressure core extending to the outside of the valve core cavity, and the top pressure core is in contact with the conical section of the top core member.

[0008] In the above-mentioned hinge shaft core that is easy to adjust the speed, the outer wall of the valve core head is sleeved with a first sealing ring, the first sealing ring is in contact with the valve core cavity, and a valve core spring is sleeved on the valve core connecting rod. One end of the valve core spring abuts against the valve core head, and the other end abuts against the valve core cavity.

[0009] In the above-mentioned hinge shaft core that is easy to adjust speed, a first bracket connecting section is provided at one end of the valve seat close to the top pressure core, and a bearing is sleeved on the first bracket connecting section.

[0010] In the above-mentioned hinge shaft core that is easy to adjust the speed, the top core component includes a top pressure head, one end of the top pressure head is provided with an adjusting screw, and the other end is provided with a top pressure cone head, the adjusting screw and the side projection of the core shell are perpendicular, the conical section is located on the top pressure cone head, and the end of the top pressure cone head away from the adjusting screw is provided with a guide rod.

[0011] The cam is provided with a cam seat at one end thereof, and the cam seat is provided with a second bracket connecting the cam and the piston rod.

[0012] In the above-mentioned hinge shaft core that is easy to adjust speed, a ball groove is provided on the side where the cam and the spline wheel face each other, a plurality of balls are installed in the ball groove, and the outer wall of the spline wheel is meshed with the inner wall of the core shell.

[0013] In the above-mentioned hinge shaft core that is easy to adjust the speed, a speed regulating valve hole is provided on the end face of the piston head close to the valve seat, an oil hole channel connected to the speed regulating valve hole is opened on the piston rod, and the conical valve core is inserted into the speed regulating valve hole.

[0014] The above-mentioned hinge axis core that is easy to adjust speed also includes a bracket, a guide seat is provided on one side of the bracket close to one end of the top core piece, the guide rod is passed through the guide seat, and an adjustment hole is provided on the other side of the bracket close to one end of the top core piece, and the adjustment screw is threadedly installed in the adjustment hole.

[0015] The beneficial effect of the present invention is that by arranging the top core member on the outside of the core shell, when adjusting, it is only necessary to adjust the top core member on the outside of the core shell to move the top core member, thereby driving the tapered section to move, so that the tapered valve core elastically pressed on the tapered section changes its position, thereby allowing the tapered valve core to expand and contract within the valve core module, so as to facilitate the adjustment of the amount of hydraulic oil flowing through the speed control valve hole. The adjustment process does not require reaching into the shaft core for operation, and can also prevent the adjustment from being affected by insufficient operating space caused by door frames, etc., and the overall operation is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the bracket and hinge axis core of this embodiment.

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the hinge axis core of this embodiment.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the top core member.

[0019] Figure 4 Schematic diagram of the internal structure of the valve core module.

[0020] Figure 5 This is one of the schematic diagrams of the internal structure of the hinge axis core.

[0021] Figure 6 This is the second schematic diagram of the internal structure of the hinge axis core.

[0022] In the figure: bracket 1, core shell 2, adjusting hole 3, guide seat 4, top core part 5, valve core module 6, bracket connecting section 7, valve seat 8, valve core cavity 9, valve core head 10, first sealing ring 11, valve core connecting rod 12, tapered valve core 13, top pressure core 14, valve core spring 15, bearing 16, top pressure head 17, adjusting screw 18, top pressure cone head 19, guide rod 20, piston head 21, piston rod 22, cam 23, spiral hole 24, pin shaft 25, piston spring 26, spline wheel 27, oil hole channel 28, external tooth segment 29, cam seat 30. DETAILED DESCRIPTION

[0023] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0024] Combine Figures 1 to 6The hinge shaft core shown is convenient for speed regulation and includes a core housing 2, a valve core module 6 being provided at one end of the core housing 2, a tapered valve core 13 being elastically provided in the valve core module 6, and a movable top core member 5 being provided on the outside of the core housing 2. The top core member 5 is provided with a tapered section so that the tapered valve core 13 can be driven to extend and retract in the valve core module 6 during the movement of the top core member 5. In this embodiment, by arranging the top core member 5 on the outside of the core housing 2, during adjustment, it is only necessary to adjust the top core member 5 on the outside of the core housing 2 so that the top core member 5 moves, thereby driving the tapered section to move, thereby causing the tapered valve core 13 elastically pressed against the tapered section to change its position, thereby causing the tapered valve core 13 to extend and retract in the valve core module 6, so as to facilitate adjustment of the amount of hydraulic oil flowing through the speed regulating valve hole. The adjustment process does not require reaching into the shaft core for operation, and can also prevent the adjustment from being affected by insufficient operating space caused by door frames, etc., making the overall operation more convenient and quick.

[0025] like Figures 2 to 4 As shown, the valve core module 6 of this embodiment includes a valve seat 8 installed in one end of the core shell 2, and a valve core cavity 9 is provided in the valve seat 8. A valve core head 10 is elastically installed in the valve core cavity 9. One end of the conical valve core 13 is connected to one end of the valve core head 10 through a valve core connecting rod 12, and the other end of the valve core head 10 is provided with a top pressure core 14 extending to the outside of the valve core cavity 9, and the top pressure core 14 is in contact with the conical section of the top core member 5; the valve core head 10, the valve core connecting rod 12 and the top pressure core 14 are an integrated structure, so that during the movement of the conical section, the top pressure core 14 adaptively presses on the conical section under the action of elasticity, thereby allowing the conical valve core 13 to telescope and adjust its position.

[0026] The outer wall of the valve core head 10 of this embodiment is sleeved with a first sealing ring 11, and the first sealing ring 11 is in contact with the valve core cavity 9. A valve core spring 15 is sleeved on the valve core connecting rod 12, and one end of the valve core spring 15 abuts against the valve core head 10, and the other end abuts against the valve core cavity 9; the first sealing ring 11 can prevent the hydraulic oil from leaking to the outside of the top pressure core 14, and the valve core spring 15 can make the valve core head 10 adaptively adjust its position in the valve core cavity 9, thereby driving the conical valve core 13 to adjust its position telescopically.

[0027] The top core member 5 of this embodiment includes a pressing head 17, an adjusting screw 18 is provided at one end of the pressing head 17, and a pressing cone head 19 is provided at the other end. The adjusting screw 18 is perpendicular to the side projection of the core shell 2, and the conical section is located on the pressing cone head 19. A guide rod 20 is provided at the end of the pressing cone head 19 away from the adjusting screw 18; a hexagonal groove is provided at the end face of the adjusting screw 18. Since the adjusting screw 18 and the core shell 2 are not coaxially arranged, it is convenient to insert tools during adjustment, and the operating space during twisting is relatively larger.

[0028] like Figure 5 and Figure 6As shown, the core housing 2 of this embodiment is further provided with a piston head 21 that can move back and forth along the length direction of the core housing 2, and a first hydraulic oil chamber is formed between the piston head 21 and the valve seat 8. A piston rod 22 is provided at the end of the piston head 21 away from the valve seat 8, and an outer tooth segment 29 is provided on the outer wall of the end of the piston rod 22 away from the piston head 21. A spline wheel 27 is meshed and sleeved on the outer tooth segment 29, and a cam 23 is sleeved on the outer tooth segment 29. Spiral holes 24 are provided on both sides of the wheel body of the cam 23, and pins 25 that are clamped in the spiral holes 24 are provided on both sides of the end of the outer tooth segment 29. The spline wheel 27 is rotatably provided on one end of the cam 23, and the piston head 21 A piston spring 26 is provided between the spline wheel 27 and the piston rod 22, and a second hydraulic oil chamber is formed between the piston head 21 and the spline wheel 27. A cam seat 30 is provided at the end of the cam 23 away from the spline wheel 27, and the cam seat 30 is clamped in the other end of the core shell 2; during the process of opening and closing the door, the core shell 2 can drive the spline wheel 27 to rotate. Under the limitation of the spiral hole 24, the outer tooth segment 29 moves in the spiral hole 24, thereby driving the entire piston rod 22 to move along the tooth groove of the inner wall of the spline wheel 27, thereby driving the piston head 21 to move, so that the hydraulic oil in the first hydraulic oil chamber and the second hydraulic oil chamber can be switched.

[0029] Specifically, the cam 23 and the spline wheel 27 of this embodiment are both provided with a ball groove on the side facing each other, and a plurality of balls are installed in the ball groove. The outer wall of the spline wheel 27 is meshed and connected with the inner wall of the core shell 2; under the action of the piston spring 26, the spline wheel 27 is always pressed against the cam 23. When the core shell 2 drives the spline wheel 27 to rotate, the cam 23 can be prevented from rotating synchronously, so that the piston rod 22 can be displaced under the action of the spiral hole 24.

[0030] A speed regulating valve hole is provided on the end face of the piston head 21 close to the valve seat 8 of this embodiment, and an oil hole channel 28 connected to the speed regulating valve hole is opened on the piston rod 22, and the conical valve core 13 is penetrated into the speed regulating valve hole; when the conical valve core 13 is adjusted and extended by the top core member 5, the size of the gap between the conical valve core 13 and the speed regulating valve hole is changed, thereby adjusting the flow rate of oil in and out, and thus adjusting the speed.

[0031] See also Figure 1 and Figure 2As shown, this embodiment also includes a bracket 1, and a guide seat 4 is provided on one side of the bracket 1 near one end of the top core piece 5, and a guide rod 20 is inserted into the guide seat 4, and an adjustment hole 3 is provided on the other side of the bracket 1 near one end of the top core piece 5, and an adjusting screw 18 is threadedly installed in the adjustment hole 3; the valve seat 8 of this embodiment is provided with a first bracket connecting section 7 at one end near the top pressure core 14, and a bearing 16 is sleeved on the first bracket connecting section 7, and a second bracket connecting section extending to the outside of the core shell 2 is provided on the cam seat 30, and a connecting wheel is installed on the second bracket connecting section; the bearing 16 and the connecting wheel are respectively installed in the two ends of the bracket 1, and the guide seat 4 is installed on the outer surface of the bracket 1 by screws. When adjusting, it is only necessary to insert the tool into the adjusting hole 3 to conveniently adjust the top core piece 5, so that the top core piece 5 moves. Under the action of the guide seat 4, the top core piece 5 moves more stably and can prevent the top core piece 5 from detaching.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A hinge shaft core that is easy to adjust speed, comprising a core shell (2), characterized in that: A valve core module (6) is provided at one end of the core housing (2), a conical valve core (13) is elastically provided in the valve core module (6), a movable top core member (5) is provided on the outer side of the core housing (2), and a conical section is provided on the top core member (5) so that the conical valve core (13) can be driven to expand and contract in the valve core module (6) during the movement of the top core member (5).

2. A hinge core that is easy to adjust speed according to claim 1, characterized in that: The valve core module (6) includes a valve seat (8) installed in one end of the core housing (2), a valve core cavity (9) is provided in the valve seat (8), a valve core head (10) is elastically installed in the valve core cavity (9), one end of the conical valve core (13) is connected to one end of the valve core head (10) through a valve core connecting rod (12), and the other end of the valve core head (10) is provided with a top pressure core (14) extending to the outside of the valve core cavity (9), and the top pressure core (14) is in contact with the conical section of the top core member (5).

3. The hinge core for easy speed regulation according to claim 2, characterized in that: The outer wall of the valve core head (10) is sleeved with a first sealing ring (11), and the first sealing ring (11) is in contact with the valve core cavity (9). The valve core connecting rod (12) is sleeved with a valve core spring (15), and one end of the valve core spring (15) abuts against the valve core head (10), and the other end abuts against the valve core cavity (9).

4. The hinge core for convenient speed regulation according to claim 3, characterized in that: A first bracket connecting section (7) is provided at one end of the valve seat (8) close to the top pressure core (14), and a bearing (16) is sleeved on the first bracket connecting section (7).

5. The hinge core with convenient speed regulation according to claim 2, characterized in that: The core member (5) includes a pressing head (17), one end of the pressing head (17) is provided with an adjusting screw (18), and the other end is provided with a pressing cone head (19), the adjusting screw (18) and the side projection of the core shell (2) are perpendicular, the conical section is located on the pressing cone head (19), and the end of the pressing cone head (19) away from the adjusting screw (18) is provided with a guide rod (20).

6. The hinge core for convenient speed regulation according to claim 5, characterized in that: A piston head (21) is further provided in the core shell (2) and is reciprocatingly movable along the length direction of the core shell (2). A first hydraulic oil chamber is formed between the piston head (21) and the valve seat (8). A piston rod (22) is provided at one end of the piston head (21) away from the valve seat (8). An outer tooth segment (29) is provided on the outer wall of one end of the piston rod (22) away from the piston head (21). A spline wheel (27) is meshedly sleeved on the outer tooth segment (29). A cam (23) is sleeved on the outer tooth segment (29). Spiral holes (24) are provided on both sides of the wheel body of the cam (23). The end of the outer tooth segment (29) is provided on both sides. A pin shaft (25) is provided which is clamped in the spiral hole (24); the spline wheel (27) is rotatably provided on one end of the cam (23); a piston spring (26) which is sleeved on the piston rod (22) is provided between the piston head (21) and the spline wheel (27); a second hydraulic oil chamber is formed between the piston head (21) and the spline wheel (27); a cam seat (30) is provided at one end of the cam (23) away from the spline wheel (27); the cam seat (30) is clamped in the other end of the core shell (2); and a second bracket connecting section which extends to the outside of the core shell (2) is provided on the cam seat (30).

7. The hinge core with convenient speed regulation according to claim 6, characterized in that: The cam (23) and the spline wheel (27) are both provided with a ball groove on the side facing each other, and a plurality of balls are installed in the ball groove. The outer wall of the spline wheel (27) is meshedly connected with the inner wall of the core shell (2).

8. The hinge core for convenient speed regulation according to claim 6, characterized in that: A speed regulating valve hole is provided on one end surface of the piston head (21) close to the valve seat (8), an oil hole channel (28) connected to the speed regulating valve hole is provided on the piston rod (22), and the conical valve core (13) is inserted into the speed regulating valve hole.

9. The hinge core for convenient speed regulation according to claim 5, characterized in that: The invention also includes a bracket (1), wherein a guide seat (4) is provided on one side of the bracket (1) close to one end of the top core member (5), the guide rod (20) is inserted into the guide seat (4), and an adjustment hole (3) is provided on the other side of the bracket (1) close to one end of the top core member (5), and the adjustment screw (18) is threadedly installed in the adjustment hole (3).

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