CN214943448U

CN214943448U - Hydraulic buffer door spindle

Info

Publication number: CN214943448U
Application number: CN202120717078.0U
Authority: CN
Inventors: 陈炳宣
Original assignee: Zhaoqing Gaoyao Zhongtianming Hardware Technology Co Ltd
Current assignee: Zhaoqing Gaoyao Zhongtianming Hardware Technology Co Ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-30
Anticipated expiration: 2031-04-08

Abstract

The utility model relates to a hydraulic buffer door-hinge, it includes shell, stator, rotor and energy storage spring, and the rotor rotates and sets up in the shell, and the stator slides along periphery axis direction and sets up in the shell and with rotor screw cooperation, energy storage spring sets up between stator and shell, be equipped with the oil pocket in the stator, be equipped with piston rod and piston in the oil pocket, the one end and the piston connection of piston rod, the other end of piston rod stretch out outside the oil pocket and with the spacing cooperation of rotor axial, the piston surface is equipped with the oilhole of crossing of its both sides of intercommunication, crosses and is equipped with the check valve in the oilhole. The stator of the hydraulic buffer door shaft is internally provided with the oil cavity, the piston rod and other components, namely the stator and the damping oil cylinder are combined into a whole, the structure is more compact, and the cost is lower.

Description

Hydraulic buffer door spindle

Technical Field

The utility model relates to a door-hinge, especially a hydraulic cushion door-hinge.

Background

Chinese patent No. CN 201620985641.1 discloses in 2017, 4/19, a durable pneumatic floor spring (door shaft), in which the housing includes a fixed plate and a cylindrical barrel fixedly disposed together, the bottom of the cylindrical barrel is provided with an integrated bottom sealing cover, a rotor shaft is rotatably mounted in the cylindrical barrel, an integrated top sealing pad bowl is disposed between the rotor shaft and the housing, the rotor shaft includes an integrated rotor and a rotating shaft, a stator is mounted in the cylindrical barrel in a constrained manner, an integrated supporting sealing sleeve is sleeved in the cylindrical barrel, a hollow piston is sleeved in the integrated supporting sealing sleeve, the piston abuts against the bottom surface of the stator, and a sealed gas chamber is formed between the integrated supporting sealing sleeve, the piston, the housing and the integrated bottom sealing cover; the gas chamber is filled with compressed nitrogen. This structure requires a high process requirement because of the need to prevent gas leakage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compact structure, simple to operate's hydraulic cushion door-hinge.

The purpose of the utility model is realized like this:

the utility model provides a hydraulic buffer door-hinge, includes shell, stator, rotor and energy storage spring, and the rotor rotates and sets up in the shell, and the stator slides along periphery axis direction and sets up in the shell and with rotor screw fit, energy storage spring sets up between stator and shell, its characterized in that: an oil cavity is arranged in the stator, a piston rod and a piston are arranged in the oil cavity, one end of the piston rod is connected with the piston, the other end of the piston rod extends out of the oil cavity and is in axial limit fit with the rotor, oil passing holes communicated with the two sides of the piston are formed in the surface of the piston, and one-way valves are arranged in the oil passing holes.

The purpose of the utility model can also adopt the following technical measures to solve:

as a more specific scheme, the stator comprises a seat sleeve and a cylinder sleeve which are integrally formed, the oil cavity is arranged in the cylinder sleeve, and the seat sleeve is sleeved outside the rotor and is in spiral fit with the rotor.

As a further scheme, the lower end of the oil cavity is communicated with the inner side of the seat sleeve, the lower end of the oil cavity is provided with a plug sleeve, the plug sleeve is provided with a central hole, the piston rod penetrates through the central hole, a first sealing ring is arranged between the piston rod and the central hole, and the lower end of the piston rod extends into the inner side of the seat sleeve and is in transmission connection with the rotor through a transverse pin; and a second sealing ring is arranged between the outer wall of the plug sleeve and the inner wall of the oil cavity.

As a further scheme, an oil passage leading to the two sides of the piston is formed in the piston rod, a speed regulating valve needle is arranged in the oil passage, a cock in transmission connection with the speed regulating valve needle is further arranged on the stator, and the position of the speed regulating valve needle for opening the oil passage and quickly discharging is adjusted through the cock.

As a further scheme, the oil passing channel comprises a longitudinal oil passing channel and a transverse oil passing channel, the upper end of the longitudinal oil passing channel is communicated with the top end of the piston rod, and the transverse oil passing channel is positioned below the piston and transversely penetrates through the piston rod to be communicated with the longitudinal oil passing channel; the center of the upper end of the stator is provided with a through hole communicated with the oil cavity, the cock is in threaded connection and sealing fit with the through hole, the upper end of the speed regulating valve needle is connected with the cock, and the lower end of the speed regulating valve needle is inserted into or points to the longitudinal oil passing channel; the upper end of the shell is provided with an opening corresponding to the cock.

As a further scheme, the upper section, the middle section and the lower section of the speed regulating valve needle are respectively provided with a connector, a thin rod and a guide rod, the connector is connected with the cock, and the thin rod penetrates through the longitudinal oil passing channel; the bottom of the transverse oil passing channel is provided with a guide hole concentric with the longitudinal oil passing channel, the guide rod is inserted into the guide hole, and the outer diameter of the guide rod is larger than that of the thin rod. When the longitudinal oil passing channel is sleeved outside the guide rod, the oil passing speed in the longitudinal oil passing channel is reduced, the door closing speed is slowed, and when the guide rod leaves the longitudinal oil passing channel, the gap between the thin rod and the longitudinal oil passing channel is large, so that the oil passing speed is improved, and the door closing speed is increased. Therefore, the door closing speed can be controlled by adjusting the position of the speed regulating valve needle.

As a further scheme, the periphery of the rotor is provided with two-way spiral grooves which are communicated with each other, the upper end and the lower end of each two-way spiral groove are respectively provided with an upper positioning groove and a lower positioning groove, the bottom of the rotor is provided with a square shaft, the square shaft extends out of the bottom of the shell, and a bearing is arranged between the rotor and the shell; the inner wall of the stator is provided with a salient point which is in spiral movable fit with the bidirectional spiral groove. The bidirectional spiral groove can realize that the bidirectional door closing can have a buffering effect.

As a further scheme, a guide sleeve is further sleeved outside the seat sleeve of the stator, the guide sleeve and the seat sleeve are linearly matched up and down through a guide groove and a guide rib, and the guide sleeve is fixedly arranged in the shell; the energy storage spring is sleeved outside a cylinder sleeve of the stator, the lower end of the energy storage spring is abutted against the top surface of the seat sleeve, the upper end of the energy storage spring is abutted against the inner top surface of the shell, or a gasket is arranged between the upper end of the energy storage spring and the inner top surface of the shell.

As a further scheme, the shell comprises a sleeve, a lower cover ring and an upper cover ring, wherein the lower cover ring and the upper cover ring are respectively and fixedly connected with the lower end and the upper end of the sleeve; the lower cover ring is in a regular polygon shape, and the periphery of the lower cover ring protrudes out of the periphery of the sleeve.

As a further scheme, the rotor comprises an outer sleeve and a fixed seat, wherein the fixed seat is provided with a shaft sleeve, the shaft sleeve is provided with a square hole which is inserted into the square shaft of the rotor, and one side of the fixed seat is provided with a baffle; the overcoat is from last to establishing down the cover establish outside the shell, the bottom of overcoat be equipped with shell lower extreme complex kerve, the top of overcoat is equipped with the screw, is equipped with adjusting nut in the screw, adjusting nut center is equipped with the hole of dodging that runs through both sides about it, one side of overcoat is equipped with the lug, the lug both sides are equipped with the draw-in groove, the interpolation of draw-in groove has the voussoir of U type, draw-in groove and voussoir inclined plane cooperation. The lower extreme that the door frame formed is seted up the socket and is cooperated with the draw-in groove, then inserts the voussoir toward the draw-in groove, and screws up through the screw, voussoir, door frame and lug can closely cooperate.

The utility model has the advantages as follows:

the stator of the hydraulic buffer door shaft is internally provided with the oil cavity, the piston rod and other components, namely the stator and the damping oil cylinder are combined into a whole, the structure is more compact, and the cost is lower.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is another angle structure diagram of fig. 1.

Fig. 3 is an exploded schematic view of the present invention.

Fig. 4 is another angle structure diagram of fig. 3.

Fig. 5 is a schematic view of the structure of the middle stator assembly of the present invention.

Fig. 6 is a schematic view of the structure of the middle rotor of the present invention.

Fig. 7 is a schematic view of the structure of the middle speed-regulating valve needle of the present invention.

Fig. 8 is a schematic view of the structure of the present invention.

FIG. 9 is a schematic sectional view A-A of FIG. 8.

Fig. 10 is a schematic structural view of the upward movement state of the stator according to the present invention.

Fig. 11 is a schematic structural view of the downward movement state of the stator of the present invention.

Fig. 12 is an enlarged schematic view of E in fig. 11.

Fig. 13 is a structural diagram of another working state of fig. 11.

Fig. 14 is a schematic structural view of another embodiment of the piston according to the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1 to 9, a hydraulic buffer door axle, includes shell, stator 7, rotor 3 and energy storage spring 9, and rotor 3 rotates and sets up in the shell, and stator 7 slides along the periphery axis direction and sets up in the shell and with rotor 3 screw fit, and energy storage spring 9 sets up between stator 7 and shell, its characterized in that: an oil cavity 75 is arranged in the stator 7, a piston rod 6 and a piston 63 are arranged in the oil cavity 75, one end of the piston rod 6 is connected with the piston 63, the other end of the piston rod 6 extends out of the oil cavity 75 and is in axial limit fit with the rotor 3, an oil passing hole 631 communicating the two sides of the piston 63 is formed in the surface of the piston 63, and a one-way valve is arranged in the oil passing hole 631. In the embodiment, the outer periphery of the piston 63 can be matched with the inner wall of the oil chamber 75 through an O-shaped sealing ring; it is also possible to fit the outer periphery of the piston 63 directly to the inner wall of the oil chamber 75, as shown in fig. 14. The oil passing hole 631 is a stepped hole pointing up and down, the check valve includes a steel ball 64 and a limit stopper (not shown), the steel ball 64 is disposed in the oil passing hole 631 and can move on the stepped surface, and the surface of the limit stopper is provided with an oil passing hole position and is connected with the upper end of the oil passing hole 631 to prevent the steel ball 64 from falling out. The piston 63 divides the oil chamber 75 into an upper oil chamber 751 and a lower oil chamber 752.

The stator 7 comprises a seat sleeve 73 and a cylinder sleeve 74 which are integrally formed, the oil cavity 75 is arranged in the cylinder sleeve 74, and the seat sleeve 73 is sleeved outside the rotor 3 and is in spiral fit with the rotor 3.

The lower end of the oil cavity 75 is communicated with the inner side of the seat sleeve 73, the lower end of the oil cavity 75 is provided with a plug sleeve 5, the plug sleeve 5 is provided with a central hole 53, the piston rod 6 penetrates through the central hole 53 and is provided with a first sealing ring 51 between the central hole 53 and the piston rod 6, and the lower end of the piston rod 6 extends into the inner side of the seat sleeve 73 and is in transmission connection with the rotor 3 through a transverse pin 61; a second sealing ring 52 is arranged between the outer wall of the plug sleeve 5 and the inner wall of the oil chamber 75. The plug sleeve 5 is in threaded fit with the lower end of the oil chamber 75, and the bottom of the plug sleeve 5 is provided with a straight knife groove 54 so as to facilitate the installation of the plug sleeve 5.

The piston rod 6 is provided with an oil passage leading to two sides of the piston 63, a speed regulation valve needle 8 is arranged in the oil passage, the stator 7 is further provided with a cock 81 in transmission connection with the speed regulation valve needle 8, and the position of the speed regulation valve needle 8 for opening the oil passage and rapidly discharging is adjusted through the cock 81.

The oil passing channel comprises a longitudinal oil passing channel 65 and a transverse oil passing channel 66, the upper end of the longitudinal oil passing channel 65 is communicated with the top end of the piston rod 6, and the transverse oil passing channel 66 is positioned below the piston 63 and transversely penetrates through the piston rod 6 to be communicated with the longitudinal oil passing channel 65; a through hole 741 communicated with the oil cavity 75 is formed in the center of the upper end of the stator 7, the cock 81 is in threaded connection and sealing fit with the through hole 741, the upper end of the speed regulating valve needle 8 is connected with the cock 81, and the lower end of the speed regulating valve needle 8 is inserted into or points to the longitudinal oil passing channel 65; the upper end of the housing is provided with an opening corresponding to the tap 81.

The upper section, the middle section and the lower section of the speed regulating valve needle 8 are respectively provided with a connector 82, a thin rod 83 and a guide rod 84, the connector 82 is connected with the cock 81, and the thin rod 83 penetrates through the longitudinal oil passing channel 65; the bottom of the transverse oil passing channel 66 is provided with a guide hole 67 concentric with the longitudinal oil passing channel 65, a guide rod 84 is inserted into the guide hole 67, and the outer diameter of the guide rod 84 is larger than that of the thin rod 83.

The periphery of the rotor 3 is provided with a bidirectional spiral groove B which is communicated with each other, the upper end and the lower end of the bidirectional spiral groove B are respectively provided with an upper positioning groove 34 and a lower positioning groove 33, the bottom of the rotor 3 is provided with a square shaft 36, the square shaft 36 extends out of the bottom of the shell, and a bearing 42 (a plane bearing) is arranged between the rotor 3 and the shell; and salient points are arranged on the inner wall of the stator 7 and are in movable fit with the bidirectional spiral groove B in a spiral mode. The bidirectional helical groove B includes a first helical groove 32 and a second helical groove 35 of different directions.

The seat cover 73 of the stator 7 is also sleeved with a guide sleeve 43, the guide sleeve 43 and the seat cover 73 are linearly matched up and down through a guide groove 431 and a guide rib 731, and the guide sleeve 43 is fixedly arranged in the shell; the energy storage spring 9 is sleeved outside the cylinder sleeve 74 of the stator 7, the lower end of the energy storage spring 9 is abutted against the top surface of the seat sleeve 73, and a gasket 91 is further arranged between the upper end of the energy storage spring 9 and the inner top surface of the shell. In this embodiment, the salient points are formed by cylindrical pins 72 (or balls) provided on the wall of a housing 73 of the stator 7.

The shell comprises a sleeve 4, a lower cover ring 41 and an upper cover ring 44, wherein the lower cover ring 41 and the upper cover ring 44 are fixedly connected with the lower end and the upper end of the sleeve 4 respectively; the lower cover ring 41 is in a regular polygon shape, and the periphery of the lower cover ring 41 protrudes out of the periphery of the sleeve 4. In this embodiment, the lower cover ring 41 has a regular octagon shape.

The rotor comprises an outer sleeve 1 and a fixed seat 2, wherein the fixed seat 2 is provided with a positioning hole 23, the positioning hole 23 is fixedly matched with a shaft sleeve 22, the shaft sleeve 22 is provided with a square hole 221 which is inserted with a square shaft 36 of the rotor 3, and one side of the fixed seat 2 is provided with a baffle 21; the overcoat 1 is from last to establishing down the cover establish outside the shell, the bottom of overcoat 1 be equipped with shell lower extreme complex kerve 16, the top of overcoat 1 is equipped with screw 15, is equipped with adjusting nut 11 in the screw 15, adjusting nut 11 center is equipped with the hole of dodging that runs through both sides about it, one side of overcoat 1 is equipped with lug 12, lug 12 both sides are equipped with draw-in groove 14, the interpolation of draw-in groove 14 has the voussoir 13 of U type, draw-in groove 14 and voussoir 13 inclined plane cooperation. The bottom groove 16 is in a regular octagon shape, the bottom groove can be matched with the lower cover ring 41 to realize synchronous rotation, and meanwhile, the bottom groove 16 and the lower cover ring 41 can be in up-and-down sliding fit. The fitting height of the outer sleeve 1 and the housing can be changed by rotating the adjusting nut 11.

The working principle is as follows: referring to fig. 10, in order to show a schematic view of a compression energy storage structure of the energy storage spring 9 (a door body is not shown) during door opening, the stator 7 moves upward along the direction of arrow C, the energy storage spring 9 is compressed, and at the same time, the lower oil chamber 752 is compressed, the oil pressure in the lower oil chamber 752 is increased to lift the steel balls 64, the oil hole 631 is opened, and the hydraulic oil in the lower oil chamber 752 rapidly enters the upper oil chamber 751. As shown in fig. 11 and 12, when the door is closed, the stator 7 moves downward in the direction of arrow D, and the energy storage spring 9 is released, however, since the upper oil chamber 751 is compressed at this time, the oil pressure in the upper oil chamber 751 is increased to push the steel balls 64 to the oil passing holes 631, and the oil passing holes 631 are blocked, and in addition, the guide rod 84 of the speed regulating needle 8 at the initial stage of door closing is located in the longitudinal oil passing channel 65, the hydraulic oil in the upper oil chamber 751 can only slowly flow to the lower oil chamber 752 (see arrow F in fig. 12), so the door closing speed is slow, and is buffered; referring to fig. 13, when the door is closed to a certain angle, the stator 7 descends to drive the guide rod 84 of the speed regulating valve needle 8 to leave the longitudinal oil passing channel 65, the oil passing space in the longitudinal oil passing channel 65 is increased, the stator 7 continues to descend under the release force of the energy storage spring 9, and the hydraulic oil in the upper oil cavity 751 can rapidly flow to the lower oil cavity 752 (see arrow G in fig. 13), so that the door closing speed can be increased when the door is closed to a certain state, and the door body can be reset to the closed state.

Claims

1. The utility model provides a hydraulic buffer door-hinge, includes shell, stator, rotor and energy storage spring, and the rotor rotates and sets up in the shell, and the stator slides along periphery axis direction and sets up in the shell and with rotor screw fit, energy storage spring sets up between stator and shell, its characterized in that: an oil cavity is arranged in the stator, a piston rod and a piston are arranged in the oil cavity, one end of the piston rod is connected with the piston, the other end of the piston rod extends out of the oil cavity and is in axial limit fit with the rotor, oil passing holes communicated with the two sides of the piston are formed in the surface of the piston, and one-way valves are arranged in the oil passing holes.

2. The hydraulic buffer door spindle according to claim 1, characterized in that: the stator comprises an integrally formed seat sleeve and a cylinder sleeve, the oil cavity is arranged in the cylinder sleeve, and the seat sleeve is sleeved outside the rotor and is in spiral fit with the rotor.

3. The hydraulic buffer door spindle according to claim 2, characterized in that: the lower end of the oil cavity is communicated with the inner side of the seat sleeve, the lower end of the oil cavity is provided with a plug sleeve, the plug sleeve is provided with a central hole, the piston rod penetrates through the central hole, a first sealing ring is arranged between the piston rod and the central hole, and the lower end of the piston rod extends into the inner side of the seat sleeve and is in transmission connection with the rotor through a transverse pin; and a second sealing ring is arranged between the outer wall of the plug sleeve and the inner wall of the oil cavity.

4. The hydraulic buffer door spindle according to claim 1, characterized in that: the oil passing channel which leads to the two sides of the piston is arranged on the piston rod, the speed regulating valve needle is arranged in the oil passing channel, the stator is further provided with a cock which is in transmission connection with the speed regulating valve needle, and the position of the speed regulating valve needle for opening the oil passing channel and rapidly discharging is adjusted through the cock.

5. The hydraulic buffer door spindle according to claim 4, wherein: the oil passing channel comprises a longitudinal oil passing channel and a transverse oil passing channel, the upper end of the longitudinal oil passing channel is communicated with the top end of the piston rod, and the transverse oil passing channel is positioned below the piston and transversely penetrates through the piston rod to be communicated with the longitudinal oil passing channel; the center of the upper end of the stator is provided with a through hole communicated with the oil cavity, the cock is in threaded connection and sealing fit with the through hole, the upper end of the speed regulating valve needle is connected with the cock, and the lower end of the speed regulating valve needle is inserted into or points to the longitudinal oil passing channel; the upper end of the shell is provided with an opening corresponding to the cock.

6. The hydraulic buffer door spindle according to claim 5, wherein: the upper section, the middle section and the lower section of the speed regulating valve needle are respectively provided with a connector, a thin rod and a guide rod, the connector is connected with the cock, and the thin rod penetrates through the longitudinal oil passing channel; the bottom of the transverse oil passing channel is provided with a guide hole concentric with the longitudinal oil passing channel, the guide rod is inserted into the guide hole, and the outer diameter of the guide rod is larger than that of the thin rod.

7. The hydraulic buffer door spindle according to claim 1, characterized in that: the periphery of the rotor is provided with two-way spiral grooves which are mutually communicated, the upper end and the lower end of each two-way spiral groove are respectively provided with an upper positioning groove and a lower positioning groove, the bottom of the rotor is provided with a square shaft, the square shaft extends out of the bottom of the shell, and a bearing is arranged between the rotor and the shell; the inner wall of the stator is provided with a salient point which is in spiral movable fit with the bidirectional spiral groove.

8. The hydraulic buffer door spindle according to claim 2, characterized in that: the outer part of the seat sleeve of the stator is also sleeved with a guide sleeve, the guide sleeve and the seat sleeve are linearly matched up and down through a guide groove and a guide rib, and the guide sleeve is fixedly arranged in the shell; the energy storage spring is sleeved outside a cylinder sleeve of the stator, the lower end of the energy storage spring is abutted against the top surface of the seat sleeve, the upper end of the energy storage spring is abutted against the inner top surface of the shell, or a gasket is arranged between the upper end of the energy storage spring and the inner top surface of the shell.

9. The hydraulic buffer door spindle according to claim 1, characterized in that: the shell comprises a sleeve, a lower cover ring and an upper cover ring, and the lower cover ring and the upper cover ring are respectively and fixedly connected with the lower end and the upper end of the sleeve; the lower cover ring is in a regular polygon shape, and the periphery of the lower cover ring protrudes out of the periphery of the sleeve.

10. The hydraulic buffer door spindle according to claim 7, wherein: the rotor is characterized by also comprising an outer sleeve and a fixed seat, wherein the fixed seat is provided with a shaft sleeve, the shaft sleeve is provided with a square hole which is inserted into the square shaft of the rotor, and one side of the fixed seat is provided with a baffle plate; the overcoat is from last to establishing down the cover establish outside the shell, the bottom of overcoat be equipped with shell lower extreme complex kerve, the top of overcoat is equipped with the screw, is equipped with adjusting nut in the screw, adjusting nut center is equipped with the hole of dodging that runs through both sides about it, one side of overcoat is equipped with the lug, the lug both sides are equipped with the draw-in groove, the interpolation of draw-in groove has the voussoir of U type, draw-in groove and voussoir inclined plane cooperation.