Hydraulic door pivot

Abstract

The application discloses a hydraulic door shaft, which comprises a shaft shell and a rotating shaft assembly, the shaft shell is internally provided with a hydraulic cavity, the upper portion of the hydraulic cavity is provided with guide grooves on both sides, the lower portion of the hydraulic cavity is sequentially provided with a first oil hole, a second oil hole, a third oil hole and a fourth oil hole on the side surface, the wall of the shaft shell is internally provided with a first oil channel which is communicated with the first oil hole and the third oil hole, and a second oil channel which is communicated with the second oil hole and the fourth oil hole; the rotating shaft assembly comprises a sleeve rod cylinder, a shaft rod, a piston and a spring which are sequentially arranged in the hydraulic cavity, the sleeve rod cylinder comprises a rod part which extends out of the end portion of the shaft shell and is rotationally connected with the shaft shell, and a cylinder part which is arranged in the hydraulic cavity, the cylinder part is provided with helical grooves on both sides, the shaft rod is sleeved in the cylinder part, the shaft rod is provided with a guide column which extends out of the helical grooves and is slidably connected with the guide grooves, the piston is fixed on the side of the shaft rod which is far away from the sleeve rod cylinder, and the piston is internally provided with a one-way valve. Therefore, the hydraulic door shaft has simple and reliable structure, can play a buffering role in the process of opening and closing the door, and can control the closing speed of different strokes.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of door hardware, in particular to a hydraulic door shaft. BACKGROUND

[0002] The door shaft is used for fixing and mounting on the door frame and the door plate, so that the door plate can rotate around the door frame to realize opening and closing the door. However, the conventional door shaft only plays a rotation limiting role, but cannot play a buffering role for closing the door, and cannot control the closing speed. The existing hydraulic door shaft has the disadvantages of complex structure, poor reliability, small bearing capacity, etc. SUMMARY

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a hydraulic door shaft which is simple and reliable in structure, can play a buffering role in the process of opening and closing the door, and can control the closing speed of different strokes.

[0004] The technical scheme adopted by the present application to solve its technical problems is:

[0005] A hydraulic door shaft, comprising a shaft shell and a rotating shaft assembly, a hydraulic cavity is arranged in the shaft shell, guide grooves are arranged on both sides of the upper part of the hydraulic cavity, a first oil hole, a second oil hole, a third oil hole and a fourth oil hole are arranged in sequence on the side surface of the lower part of the hydraulic cavity, a first oil channel communicating the first oil hole and the third oil hole and a second oil channel communicating the second oil hole and the fourth oil hole are arranged in the wall of the shaft shell, the shaft shell is further provided with a first adjusting bolt for adjusting the flow of the first oil channel and a second adjusting bolt for adjusting the flow of the second oil channel; the rotating shaft assembly comprises a sleeve rod cylinder, a shaft rod, a piston and a spring arranged in sequence in the hydraulic cavity, the sleeve rod cylinder comprises a rod part extending out of the end of the shaft shell and being rotationally connected with the shaft shell, and a cylinder part arranged in the hydraulic cavity, helical grooves are arranged on both sides of the cylinder part, the shaft rod is sleeved in the cylinder part, the shaft rod is provided with a guide column extending out of the helical groove and being slidingly connected with the guide groove, the piston is fixed on the side of the shaft rod away from the sleeve rod cylinder, a one-way valve is arranged in the piston, and the spring is installed between the piston and the end of the hydraulic cavity.

[0006] The hydraulic door shaft has at least the following beneficial effects: the guide column of the shaft rod extends out of the spiral grooves on both sides of the barrel of the sleeve rod, and the spiral grooves are in sliding fit with the guide grooves on both sides of the upper part of the hydraulic cavity of the shaft shell, so that when the door plate drives the sleeve rod to rotate through the rod part, the guide column can be driven to move up and down along the guide grooves, thereby driving the piston to compress the spring, and when the hand is released, the reset can be realized; the flow of the hydraulic oil in the hydraulic cavity through the one-way valve, the first oil channel and the second oil channel plays a buffering role; and the first adjusting bolt and the second adjusting bolt can adjust the door closing speed of the hydraulic door shaft in the first half stroke and the second half stroke.

[0007] According to some embodiments of the present application, the one-way valve is provided with two, including a first one-way valve and a second one-way valve, and the directions of the first one-way valve and the second one-way valve are opposite.

[0008] Beneficially, the hydraulic oil can flow through both sides of the piston during the opening and closing process, and the hydraulic door shaft will not fail due to blockage of the first oil channel and the second oil channel.

[0009] According to some embodiments of the present application, the spiral groove comprises an upper curved segment, a horizontal segment and a lower curved segment which are sequentially connected.

[0010] Beneficially, by providing the horizontal segment between the upper curved segment and the lower curved segment, the door plate can be stopped at a certain position in the middle, thereby realizing more functions.

[0011] According to some embodiments of the present application, a bearing is arranged at the connection between the rod part and the end part of the shaft shell.

[0012] Beneficially, the arrangement of the bearing facilitates smooth rotation between the rod part and the end part of the shaft shell, and reduces the resistance of opening and closing the door.

[0013] According to some embodiments of the present application, the cross section of the shaft shell is D-shaped, the hydraulic cavity is cylindrical, the first oil hole, the third oil hole and the first oil channel are located near one side edge of the shaft shell, and the second oil hole, the fourth oil hole and the second oil channel are located near the other side edge of the shaft shell.

[0014] Beneficially, the design of the shaft shell and the hydraulic cavity facilitates providing space for the first oil channel and the second oil channel, so that the first oil channel and the second oil channel can work independently.

[0015] According to some embodiments of the present application, the shaft shell comprises a shell barrel, an upper end cover and a lower end cover arranged at both ends of the shell barrel.

[0016] Beneficially, such arrangement facilitates installation of the rotating shaft assembly in the shaft shell, and is conducive to maintenance.

[0017] According to some embodiments of the present invention, sealing rings are provided at the connection between the upper end cover and the shell, and at the connection between the lower end cover and the shell.

[0018] The advantage is that the sealing ring can prevent hydraulic oil from leaking from the upper and lower end covers, ensuring the smooth operation of the hydraulic door hinge.

[0019] According to some embodiments of the present invention, the end of the piston that abuts against the spring is provided with an annular groove, and the opening of the one-way valve is disposed in the annular groove.

[0020] The advantage is that this prevents the spring from affecting the one-way valve's obstruction, thus affecting the flow rate of hydraulic oil inside the one-way valve and consequently the force required to open and close the door.

[0021] According to some embodiments of the present invention, a first mounting block is provided on the side of the shaft housing, the first mounting block having a T-shaped cross-section, and the first mounting block is used to connect with the door frame.

[0022] The advantage is that setting the first mounting block facilitates the installation of the shaft housing on the door frame.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0026] Figure 2 for Figure 1 The diagram shown is an exploded view;

[0027] Figure 3 for Figure 2 A schematic diagram of the shell is shown;

[0028] Figure 4 for Figure 3 A schematic diagram of the cross-section shown;

[0029] Figure 5 for Figure 2 A schematic diagram of the piston is shown;

[0030] Figure 6 for Figure 2 The diagram shown is of the sleeve.

[0031] The reference signs: shaft shell 100, hydraulic cavity 110, guide groove 120, first oil hole 130, second oil hole 140, third oil hole 150, fourth oil hole 160, first oil channel 170, second oil channel 180, first adjusting bolt 190, second adjusting bolt 200, sleeve rod cylinder 210, shaft rod 220, piston 230, spring 240, rod part 250, cylinder part 260, helical groove 270, guide column 280, first one-way valve 290, second one-way valve 300, upper curved section 310, horizontal section 320, lower curved section 330, bearing 340, shell cylinder 350, upper end cover 360, lower end cover 370, sealing ring 380, ring groove 390, first mounting block 400. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0033] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the purpose of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0034] In the description of the present application, several meanings are one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0035] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0036] The following refers to Figures 1-6 A hydraulic door shaft is described in detail in one specific embodiment. It is understood that the following description is only exemplary and is not a specific limitation of the invention.

[0037] As Figures 1-6 shown, a hydraulic door shaft includes a shaft shell 100 and a rotating shaft assembly.

[0038] The hydraulic cavity 110 is provided with a first oil hole 130, a second oil hole 140, a third oil hole 150 and a fourth oil hole 160 on the lower side surface thereof, and the wall of the shaft shell 100 is provided with a first oil channel 170 communicating the first oil hole 130 and the third oil hole 150 and a second oil channel 180 communicating the second oil hole 140 and the fourth oil hole 160, and the shaft shell 100 is further provided with a first adjusting bolt 190 for adjusting the flow of the first oil channel 170 and a second adjusting bolt 200 for adjusting the flow of the second oil channel 180; the rotating shaft assembly comprises a sleeve rod cylinder 210, a shaft rod 220, a piston 230 and a spring 240 which are sequentially arranged in the hydraulic cavity 110, the sleeve rod cylinder 210 comprises a rod part 250 extending from the end of the shaft shell 100 and being rotatably connected with the shaft shell 100 and a cylinder part 260 arranged in the hydraulic cavity 110, the cylinder part 260 is provided with helical grooves 270 on both sides thereof, the shaft rod 220 is sleeved in the cylinder part 260, the shaft rod 220 is provided with guide columns 280 extending out of the helical grooves 270 and being slidably connected with the guide grooves 120, the piston 230 is fixed on the side of the shaft rod 220 away from the sleeve rod cylinder 210, the piston 230 is provided with a one-way valve therein, and the spring 240 is arranged between the piston 230 and the end of the hydraulic cavity 110.

[0039] The guide columns 280 of the shaft rod 220 extend out of the helical grooves 270 on both sides of the cylinder part 260 of the sleeve rod cylinder 210 and are slidably connected with the guide grooves 120 on both sides of the upper part of the hydraulic cavity 110 of the shaft shell 100, so that when the door plate drives the sleeve rod cylinder 210 to rotate through the rod part 250, the guide columns 280 can be driven to move up and down along the guide grooves 120, thereby driving the piston 230 to compress the spring 240, so that the reset can be realized when the hand is released, and the flow of the hydraulic oil in the hydraulic cavity 110 through the one-way valve, the first oil channel 170 and the second oil channel 180 plays a buffering role, and the first adjusting bolt 190 and the second adjusting bolt 200 can adjust the door closing speed of the hydraulic door shaft in the first half and the second half of the stroke. Therefore, the hydraulic door shaft has simple and reliable structure, can play a buffering role in the process of opening and closing the door, and can control the door closing speed of different strokes.

[0040] As shown in Figure 5 , the one-way valve is provided with two, including a first one-way valve 290 and a second one-way valve 300, the directions of the first one-way valve 290 and the second one-way valve 300 are opposite. This ensures that the hydraulic oil can flow through both sides of the piston 230 in the process of opening and closing the door, and will not fail due to the blockage of the first oil channel 170 and the second oil channel 180.

[0041] As shown in Figure 6 , the helical groove 270 comprises an upper curved section 310, a horizontal section 320 and a lower curved section 330 which are sequentially communicated. By arranging the horizontal section 320 between the upper curved section 310 and the lower curved section 330, the door plate can be stopped at a certain position in the middle, thereby realizing more functions.

[0042] As Figure 2 shown, the connection between the rod part 250 and the end of the shaft shell 100 is provided with a bearing 340. The bearing 340 is provided to facilitate smooth rotation between the rod part 250 and the end of the shaft shell 100, and reduce the resistance of the switch door.

[0043] As Figure 3 and Figure 4 shown, the cross section of the shaft shell 100 is D-shaped, the hydraulic cavity 110 is cylindrical, the first oil hole 130, the third oil hole 150 and the first oil way 170 are located near one side edge of the shaft shell 100, and the second oil hole 140, the fourth oil hole 160 and the second oil way 180 are located near the other side edge of the shaft shell 100. The shaft shell 100 and the hydraulic cavity 110 are thus designed to provide space for the first oil way 170 and the second oil way 180, so that the first oil way 170 and the second oil way 180 can work independently.

[0044] As Figure 2 shown, the shaft shell 100 includes a shell cylinder 350, an upper end cover 360 and a lower end cover 370 arranged at both ends of the shell cylinder 350. This arrangement facilitates the installation of the rotating shaft assembly in the shaft shell 100, and facilitates maintenance.

[0045] Specifically, the connection between the upper end cover 360 and the shell cylinder 350, and the connection between the lower end cover 370 and the shell cylinder 350 are each provided with a sealing ring 380. The sealing ring 380 is arranged to prevent hydraulic oil from leaking from the upper end cover 360 and the lower end cover 370, and to ensure smooth operation of the hydraulic door shaft.

[0046] As Figure 5 shown, the end of the piston 230 abutting the spring 240 is provided with an annular groove 390, and the opening of the one-way valve is arranged in the annular groove 390. This prevents the spring 240 from affecting the blocking of the one-way valve, thereby affecting the flow rate of the hydraulic oil in the one-way valve, and thus affecting the force of the switch door.

[0047] It is worth mentioning that, as Figure 1 shown, the side surface of the shaft shell 100 is provided with a first mounting block 400, the cross section of the first mounting block 400 is T-shaped, and the first mounting block 400 is used to connect with the door frame. The first mounting block 400 is arranged to facilitate the installation of the shaft shell 100 on the door frame.

[0048] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A hydraulic door hinge, characterized in that, include: A shaft housing (100) has a hydraulic chamber (110) inside. Guide grooves (120) are provided on both upper sides of the hydraulic chamber (110). A first oil hole (130), a second oil hole (140), a third oil hole (150), and a fourth oil hole (160) are sequentially provided on the lower side of the hydraulic chamber (110). The inner wall of the shaft housing (100) has a first oil passage (170) connecting the first oil hole (130) and the third oil hole (150), and a second oil passage (180) connecting the second oil hole (140) and the fourth oil hole (160). The shaft housing (100) also has... The shaft housing (100) is provided with a first adjusting bolt (190) for adjusting the flow rate of the first oil passage (170) and a second adjusting bolt (200) for adjusting the flow rate of the second oil passage (180). The cross-section of the shaft housing (100) is D-shaped, and the hydraulic chamber (110) is cylindrical. The first oil hole (130), the third oil hole (150) and the first oil passage (170) are located near one side of the shaft housing (100), and the second oil hole (140), the fourth oil hole (160) and the second oil passage (180) are located near the other side of the shaft housing (100). The rotating shaft assembly includes a sleeve (210), a shaft (220), a piston (230), and a spring (240) sequentially arranged in the hydraulic chamber (110). The sleeve (210) includes a rod portion (250) extending out of the end of the shaft housing (100) and rotatably connected to the shaft housing (100), and a cylindrical portion (260) disposed in the hydraulic chamber (110). The cylindrical portion (260) has helical grooves (270) on both sides. The shaft (220) is sleeved in the cylindrical portion (260). The shaft (220) has a guide post (240) extending out of the helical groove (270) and slidably connected to the guide groove (120). 80), the piston (230) is fixed on the side of the shaft (220) away from the sleeve (210), the piston (230) is provided with a one-way valve, the spring (240) is installed between the end of the piston (230) and the hydraulic chamber (110), the end of the piston (230) that abuts against the spring (240) is provided with an annular groove (390), the opening of the one-way valve is set in the annular groove (390), there are two one-way valves, including a first one-way valve (290) and a second one-way valve (300), the first one-way valve (290) and the second one-way valve (300) are in opposite directions.

2. A hydraulic door hinge according to claim 1, characterized in that, The spiral groove (270) includes an upper curved section (310), a horizontal section (320) and a lower curved section (330) connected in sequence.

3. A hydraulic door hinge according to claim 1, characterized in that, A bearing (340) is provided at the connection between the rod (250) and the end of the housing (100).

4. A hydraulic door hinge according to claim 1, characterized in that, The housing (100) includes a shell cylinder (350), an upper end cap (360) and a lower end cap (370) disposed at both ends of the shell cylinder (350).

5. A hydraulic door hinge according to claim 4, characterized in that, A sealing ring (380) is provided at the connection between the upper end cover (360) and the shell (350), and at the connection between the lower end cover (370) and the shell (350).

6. A hydraulic door hinge according to claim 1, characterized in that, The side of the shaft housing (100) is provided with a first mounting block (400), the first mounting block (400) has a T-shaped cross section, and the first mounting block (400) is used to connect with the door frame.

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