WO2022063008A1

WO2022063008A1 - Bidirectional door opening and closing shaft

Info

Publication number: WO2022063008A1
Application number: PCT/CN2021/118585
Authority: WO
Inventors: 伍肇坚
Original assignee: 广东兆高金属科技有限公司
Priority date: 2020-09-22
Filing date: 2021-09-15
Publication date: 2022-03-31
Also published as: KR20220157962A; TW202214944A; JP7384496B2; TWI814086B; KR102678391B1; JP2023511989A; DE112021000511T5; CN212478882U

Abstract

A bidirectional door opening and closing shaft, comprising: an outer sleeve (6), a first cover portion, a second cover portion, an output shaft (1203), a sliding groove column (12), a central shaft (9), a return spring (7), etc. The sliding groove column (12) is provided with a first sliding groove (1201) and a second sliding groove (1202) which are opposite to and vertically staggered from each other; both the first sliding groove (1201) and the second sliding groove (1202) are V-shaped; a first drive shaft (901) extends into the first sliding groove (1201), and a second drive shaft (902) extends into the second sliding groove (1202); a cylindrical bottom of the sliding groove column (12) extends out of the output shaft (1203); the output shaft (1203) extends out from the inner cavity of the second cover portion; the output shaft (1203) and the sliding groove column (12) are movably connected to the second cover portion; the output shaft (1203) and the sliding groove column (12) merely perform circumferential movement in the cavity of the outer sleeve (6); and a spring stop part is fixedly embedded in the middle section of the central shaft (9).

Description

A two-way opening and closing door shaft

technical field

The invention relates to the field of door and window hardware accessories, in particular to a door shaft.

Background technique

At present, there are many types of products used for automatic buffer closing on the market. The two-way opening door shaft products are mainly floor springs. However, when installing the floor springs, it is extremely inconvenient to dig a hole on the ground and bury the installation and construction. When the floor is used, the floor slab must be damaged. Digging a pit is more troublesome, and its biggest disadvantage is the potential safety hazard of penetrating the floor slab. The distance between the center of the output shaft of the floor spring and the door frame is long, resulting in a large gap between the door leaf and the door frame after the door leaf is opened, and children's hands are easy to reach in. , The door leaf is easy to cause pinch and hurt people in the process of automatic closing. Another product is the automatic door closing shaft. During the process of opening and closing the door leaf, the gap between the door leaf and the door frame is unchanged, which is relatively safe, but only a single The direction is open, not suitable for public places. In addition, there is a door-closing shaft that can be opened in both directions. Since there is no positioning function, the door leaf is easily blown open during use. The above various reasons cause the user to be extremely inconvenient in use.

SUMMARY OF THE INVENTION

The embodiment of the present invention provides a two-way opening and closing door shaft. Using the technical solution provided in this embodiment, using the two-way opening and closing door shaft installed in the door leaf, during the opening and closing process of the door leaf, the gap between the door leaf and the door frame is basically No change, to prevent the child's hand from being inserted into the hand and to be injured. Further, due to the enhanced positioning function, the opening and closing angle of the door leaf is more accurate, which can meet the needs of safety and beauty in modern social life.

The purpose of the embodiment of the present invention is achieved through the following technical solutions:

The invention provides a two-way opening and closing door shaft, comprising: an outer sleeve, a first cover part, a second cover part, an output shaft, a chute column, a central shaft, a return spring, and a spring stop part, and one end of the outer sleeve is provided with a flange , the flange is provided with a flange mounting hole, a second cover is provided in the lumen of the outer sleeve close to the flange mounting hole, a first cover is provided in the lumen of the other end of the outer sleeve, and the outer sleeve is connected to the first cover. and the second cover part are fixedly connected, the first end of the center shaft extends into the inner cavity of the first cover part, the center shaft and the first cover part form a matching structure of axial sliding connection and synchronous rotation, the second end of the center shaft The first drive shaft and the second drive shaft are arranged at the second end in a staggered manner. Two chutes, the shapes of the first and second chutes are both V-shaped, the first drive shaft extends into the first chute, the second drive shaft extends into the second chute, and the bottom of the chute column extends out The output shaft, the output shaft protrudes from the inner cavity of the second cover, the output shaft and the chute column are movably connected with the second cover, the output shaft and the chute column only move circumferentially in the lumen of the outer casing, the spring The stopper is fixedly embedded in the middle section of the central shaft. The assembly method of the return spring is to fit the return spring on the central axis between the upper end face of the spring stopper and the inner end face of a component above the spring stopper that does not move axially. on the body;

Wherein, when the output shaft and the chute column move circumferentially in the lumen of the outer casing, and the first drive shaft slides in the first chute and slides from the lowest position of the V-shape to the highest position of the V-shape, the second When the drive shaft slides in the second chute and slides from the lowest position of the V-shape to the highest position of the V-shape, the spring stopper moves axially and compresses the return spring.

Further, the inner cavity of the outer sleeve is also equipped with a reinforced positioning mechanism, the second cover is a second cover, and the reinforced positioning mechanism includes a second cover, a positioning sleeve, a positioning ball, and a positioning spring. The concave and middle sections have a circular ring with a hollow stepped surface. The hollow stepped surface is provided with a plurality of positioning holes. The positioning sleeve is generally annular and is fixedly sleeved on the middle section of the output shaft. The positioning sleeves are respectively provided with positions corresponding to the positioning holes. The through hole is provided with a positioning ball and a positioning spring vertically. The positioning ball can be pushed into the positioning hole by the positioning spring, and the output shaft penetrates the second cover and the positioning sleeve.

Further, a plurality of steel balls are arranged between the outer end surface of the chute column facing the output shaft and the inner end surface of the second cover facing the chute column.

Further, the position of the positioning sleeve perpendicular to the axis is provided with a set screw for synchronizing the movement of the positioning sleeve and the output shaft.

Further, after the output shaft passes through the positioning sleeve, it also passes through the outer ring of the bearing, the inner ring of the bearing and the retaining ring in sequence, and a rolling bearing is arranged between the outer ring of the bearing and the inner ring of the bearing.

Further, after the output shaft passes through the positioning sleeve, it also passes through the bearing outer ring and the bearing inner ring in sequence. A rolling bearing is arranged between the bearing outer ring and the bearing inner ring, and the bearing inner ring is fixedly connected with the output shaft.

Further, the highest part of the V-shape of the first chute and the highest part of the V-shape of the second chute are each provided with a horizontal slot segment parallel to the end face of the chute column, and the horizontal slot segment includes a Concave groove segment.

Further, the shaft bodies of the first drive shaft and the second drive shaft are respectively sleeved with sliding sleeves.

Further, the first cover is a shaft sleeve, the inner wall of the shaft sleeve is provided with a spline groove, the first end extending into the inner cavity of the shaft sleeve is provided with a spline shaft, and the central shaft and the shaft sleeve form an axial sliding connection and rotate synchronously. The matching structure is adopted, and the axial sliding connection and synchronous rotation are realized between the center shaft and the shaft sleeve through the cooperation of the spline shaft and the spline groove.

Further, a hydraulic buffer mechanism is provided in the inner cavity of the outer sleeve between the inner end face of the first cover part and the inner end face of the chute column.

Further, the hydraulic buffer mechanism includes a spring stop portion, and the spring stop portion is a piston.

Further, when the assembly method of the return spring is specifically: when the return spring is sleeved on the central shaft body between the upper end face of the piston and the inner end face of the first cover, the upper end face of the piston to the inner end face of the first cover The space between them is the oil storage chamber, and the space between the lower end face of the piston and the inner end face of the chute column is the pressure oil chamber.

Further, a retaining ring is provided between the return spring and the upper end surface of the piston.

Further, a sealing ring is arranged between the outer wall of the first cover part and the inner wall of the outer sleeve, a sealing ring is arranged between the outer wall of the piston and the inner wall of the outer sleeve, and a sealing ring is arranged between the inner wall of the second cover and the outer wall of the output shaft. A sealing ring is arranged between the two, and a sealing ring 21 is arranged between the outer wall of the second cover and the inner wall of the outer sleeve.

Further, the piston is a piston with a one-way valve.

Further, a magnet is arranged at the bottom of the inner wall of the chute column.

Further, the two-way opening and closing door shaft is also provided with a hydraulic oil flow control mechanism.

Further, the specific structure of the hydraulic oil flow control mechanism is: from the outer end face of the first end portion along the axis of the central shaft, a hole is opened in the shaft body, and an oil return hole is opened on the shaft body of the central shaft, and the oil return hole is communicated with the hole. The speed regulating oil needle is placed in the hole from top to bottom, the first cover is screwed to the outward end of the first cover, the speed regulating screw is screwed into the central through hole of the first cover, and one end of the speed regulating screw is embedded For the speed regulating oil needle, the other end of the speed regulating screw protrudes out of the upper end face of the first cover, and the regulating wheel is fixedly installed. There is a gap between the central shaft and the inner hole of the first cover as an oil passage.

Further, the specific structure of the hydraulic oil flow control mechanism can also be as follows: from the outer end face of the first end portion along the axis of the central shaft, a hole is opened in its shaft body, and an oil return hole is opened on the shaft body of the central shaft. The oil return hole and the hole channel In the same way, the speed regulating oil needle is placed in the hole from top to bottom, the first cover is screwed on the outward end of the first cover, the speed regulating screw is screwed in the central through hole of the first cover, and one end of the speed regulating screw is screwed. The speed regulating oil needle is embedded, the other end of the speed regulating screw protrudes out of the upper end face of the first cover, and the regulating wheel is fixedly installed. A through hole is opened between the upper end face and the inner end face of the first cover as an oil passage. .

In the specific structure of the above two hydraulic oil flow control mechanisms, the oil return hole is located on the shaft body of the central shaft between the lower end face of the piston and the inner end face of the chute column, or,

The oil return hole is arranged on the outer end face of the second end portion and communicated with the hole along the axis of the central shaft.

Further, the speed regulating oil needle has a variable diameter in diameter.

Further, a sealing ring is arranged between the inner wall of the first cover and the outer wall of the speed regulating screw, and a sealing ring is arranged between the outer wall of the first cover and the inner wall of the first cover part.

Further, when the assembling method of the return spring is specifically: when the return spring is sleeved on the central shaft body between the upper end face of the piston and the inner end face of the chute column, the upper end face of the piston to the inner end face of the chute column is placed between the upper end face of the piston and the inner end face of the chute column. The space is an oil storage chamber, and the space between the lower end face of the piston and the inner end face of the first cover portion is a pressurized oil chamber.

Further, a plane bearing is arranged between the upper end face of the return spring and the inner end face of the chute column.

Further, the piston is a piston with a one-way valve.

Further, a magnet is provided on the inner end face of the first cover portion.

Further, the specific structure of the hydraulic oil flow control mechanism is: from the outer end face of the first end portion along the axis of the central shaft, a hole is opened in the shaft body, and an oil return hole is opened on the shaft body of the central shaft, and the oil return hole is communicated with the hole. The speed regulating oil needle is placed in the hole from the bottom to the top, the first cover is screwed to the outward end of the first cover, the speed regulating screw is screwed into the center through hole of the first cover, and one end of the speed regulating screw is embedded with the regulating screw. For the quick oil needle, the other end of the speed regulating screw protrudes out of the upper end face of the first cover, and the regulating wheel is fixedly installed, and a gap is left between the central shaft and the inner hole of the first cover as an oil passage.

Further, the specific structure of the hydraulic oil flow control mechanism can also be as follows: from the outer end face of the first end portion along the axis of the central shaft, a hole is opened in its shaft body, and an oil return hole is opened on the shaft body of the central shaft. The oil return hole and the hole channel In the same way, the speed regulating oil needle is placed in the hole from the bottom to the top, the first cover is screwed on the outward end of the first cover, the speed regulating screw is screwed in the central through hole of the first cover, and one end of the speed regulating screw is embedded. The speed regulating oil needle is installed, the other end of the speed regulating screw protrudes out of the upper end face of the first cover, and the regulating wheel is fixedly installed, and a through hole is opened between the upper end face and the inner end face of the first cover as an oil passage.

In the specific structures of the above two hydraulic oil flow control mechanisms, the oil return hole is located on the shaft body of the central shaft between the upper end face of the piston and the inner end face of the chute column, or,

The oil return hole is arranged on the outer end surface of the second end portion along the axis of the central axis and communicated with the hole channel 903 .

Further, the speed regulating oil needle has a variable diameter in diameter.

By using the technical scheme of the present invention, the trouble of digging and installing the ground spring and the potential safety hazard in use are solved. It solves the inconvenience of using the one-way door closing shaft, and solves the trouble of inaccurate positioning of the traditional two-way door closing shaft and dislocation after the door leaf is closed.

Description of drawings

Fig. 1 is the assembly sectional schematic diagram of the first embodiment of the present invention, namely the two-way opening and closing door shaft, this two-way opening and closing door shaft is installed on the upper part of the door leaf, and is assembled with the door frame on the left and the door leaf on the right;

Fig. 2 is the assembly sectional schematic diagram of the second embodiment of the present invention, namely the two-way opening and closing door shaft, and this two-way opening and closing door shaft is installed in the lower part of the door leaf, and is assembled and used with the door frame on the left, the door leaf on the right;

Figure 3 is a schematic plan view of the relative movement of the door frame and the door leaf on which the two-way opening and closing door shaft of the present invention is installed, the left side is the door frame, and the right side is the door leaf;

Fig. 4 is the sectional structural component schematic diagram of the first embodiment of the present invention in Fig. 1;

Fig. 5 is the cross-sectional structural component schematic diagram of the second embodiment of the present invention in Fig. 2;

Fig. 6 is the three-dimensional structure schematic diagram of the chute column and the output shaft in the second embodiment of the present invention in Fig. 2;

Fig. 7 is the structural representation of the central axis;

8 is a schematic structural diagram of a second cover;

Fig. 9 is the structural representation of positioning sleeve;

Fig. 10 is the cross-sectional structure schematic diagram of the state of energy discharge (left side image) and energy storage (right side image) of the first embodiment of the two-way opening and closing door shaft of the present invention in Fig. 1;

Fig. 11 is a cross-sectional structural diagram of the second embodiment of the two-way opening and closing door shaft of the present invention in the state of discharging energy (right side) and storing energy (left side) in Fig. 2 .

In the figure: 1. Adjusting wheel; 2. Speed-adjusting screw; 3. First cover; 4. Speed-adjusting oil needle; 5. Shaft sleeve; 6. Outer casing; 601. Flange mounting hole; 7. Return spring; 8, piston; 9, central shaft; 9001, first end; 9002, second end; 10, sliding sleeve; 901, first drive shaft; 902, second drive shaft; 903, hole; 904, oil return hole; 12, chute column; 1201, first chute; 1202, second chute; 1203, output shaft; 13, steel ball; 14, second cover; 1401, positioning hole; 15, positioning ball; 16 , positioning spring; 17, retaining ring; 18, rolling bearing; 1801, bearing outer ring; 1802, bearing inner ring: 19, set screw; 20, positioning sleeve; 2001, through hole; 21, sealing ring; 22, one-way valve; 23, pressure oil chamber; 24, oil storage chamber; 25, magnet; 26, plane bearing.

detailed description

In order to make the objectives, technical solutions, and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Please refer to Figure 1 to Figure 10 for reading.

In the present invention, the two-way opening and closing door shaft can be installed on the upper or lower part of the door leaf. The structure of the two-way door opening shaft installed on the upper and lower parts can be consistent or inconsistent. The reason for the inconsistency is to consider the effect of gravity. If a hydraulic buffer mechanism is used, it is best to consider that the upper part is the storage device in the direction perpendicular to the ground. The lower part of the oil chamber is the pressurized oil chamber, because the pressurized oil chamber needs to be protected without air. If the pressurized oil chamber is set in the upper part, air may enter, and the compression elasticity of the air is large, which will reduce the buffering effect of the hydraulic buffer.

Example 1:

Referring to Figures 1 to 7,

The present invention provides a two-way opening and closing door shaft, comprising: an outer sleeve 6, a first cover part, a second cover part, an output shaft 1203, a chute column 12, a central shaft 9, a return spring 7, a spring stopper, an outer sleeve One end of 6 is provided with a flange, the flange is provided with a flange mounting hole 601, a second cover is provided in the lumen of the outer sleeve 6 close to the flange mounting hole 601, and a first cover is provided in the lumen of the other end of the outer sleeve 6. The cover part, the outer sleeve 6 is fixedly connected with the first cover part and the second cover part, the first end 9001 of the center shaft 9 extends into the inner cavity of the first cover part, and the center shaft 9 and the first cover part form an axial sliding The matching structure of connection and synchronous rotation, the second end 9002 of the central shaft 9 protrudes into the inner cavity of the chute column 12, and the second end 9002 is provided with a first drive shaft 901 and a second drive shaft staggered up and down. 902, the chute column is provided with a first chute 1201 and a second chute 1202 that are staggered up and down, the first chute 1201 and the second chute 1202 are both V-shaped, and the first drive shaft 901 extends into the first chute 1201, the second drive shaft 902 extends into the second chute 1202, the output shaft 1203 extends from the bottom of the chute column 12, the output shaft 1203 protrudes from the inner cavity of the second cover, and the output shaft 1203 And the chute column 12 is movably connected with the second cover, the output shaft 1203 and the chute column 12 only move circumferentially in the lumen of the outer casing 6, the spring stopper is fixedly embedded in the middle section of the central shaft 9, the return spring The assembly method of 7 is to fit the return spring 7 on the shaft body of the central shaft 9 between the upper end face of the spring stop and the inner end face of a component above the spring stop that does not move axially;

Among them, when the output shaft 1203 and the chute column 12 make a circumferential movement in the lumen of the outer sleeve 6, and the first drive shaft 901 slides in the first chute 1201 and slides from the lowest part of the V-shaped to the lower part of the V-shaped At the highest position, when the second drive shaft 902 slides in the second sliding groove 1202 and slides from the lowest position of the V-shape to the highest position of the V-shape, the spring stopper moves axially and compresses the return spring 7 .

In this embodiment, since the shapes of the first sliding groove 1201 and the second sliding groove 1202 are both V-shaped, the first driving shaft 901 extends into the first sliding groove 1201 and the second driving shaft 902 extends into the second sliding groove 1202 , when the first drive shaft 901 and the second drive shaft 902 are at the lowest position of the V-shape of their respective chutes, the door shaft is in a state of discharging energy, that is, the most stable state. At this time, the first drive shaft and the second The drive shaft can choose to slide to the left inclined section or to the right inclined section in its respective chute. Due to the linkage and energy storage, the door leaf can be opened and closed in both directions. This product is embedded in the door leaf, and the gap between the door leaf and the door frame is basically unchanged when opening or closing, so as to prevent children from getting hurt when they insert their hands. Further, due to the positioning function, it can meet the needs of safety and beauty in modern social life.

Embodiment 2:

Referring to Figures 1 to 11,

Further, the inner cavity of the outer sleeve 6 is also provided with a reinforced positioning mechanism, the second cover is the second cover 14, and the positioning mechanism includes the second cover 14, the positioning sleeve 20, the positioning ball 15, the positioning spring 16, and the second cover. 14 is an annular shape with both ends concave inward and a hollow stepped surface in the middle section, a plurality of positioning holes 1401 are provided on the hollow stepped surface, and the positioning sleeve 20 is annular as a whole and is fixedly sleeved on the middle section of the output shaft 1203 for positioning. The sleeve 20 is provided with a through hole 2001 at the position corresponding to the positioning hole 1401. The positioning ball 15 and the positioning spring 16 are vertically arranged in the through hole. The positioning ball 15 can be pushed into the positioning hole 1401 by the positioning spring 16. Two covers 14 and a positioning sleeve 20 .

In this embodiment, due to the further enhanced positioning function, it can meet the needs of life safety and aesthetics in modern society.

Further, a plurality of steel balls 13 are disposed between the outer end surface of the chute column 12 facing the output shaft 1203 and the inner end surface of the second cover 14 facing the chute column 12 .

The function of the steel ball is to reduce the wear between the second cover and the chute column.

Further, the position of the positioning sleeve 20 perpendicular to the axis is provided with a set screw 19 for synchronizing the movement of the positioning sleeve 20 with the output shaft 1203 .

The function of the set screw is to strengthen the synchronous movement of the positioning sleeve and the output shaft.

Further, after the output shaft 1203 passes through the positioning sleeve 20 , it also passes through the rolling bearing 18 and the retaining ring 17 in sequence. The rolling bearing 18 is provided between the bearing outer ring 1801 and the bearing inner ring 1802 .

The function of the retaining ring is to limit the output shaft to move only in the circumferential direction and not in the axial direction. The function of the rolling bearing is to enhance the smoothness of the circumferential movement of the output shaft.

Alternatively, after the output shaft 1203 passes through the positioning sleeve 20, it also passes through the rolling bearing 18 and the retaining ring 17 in sequence. connect.

The function of the fixed connection between the inner ring of the bearing and the output shaft 1203 is that it acts as a retaining ring.

Further, horizontal groove segments parallel to the end face of the chute column 12 are respectively provided at the highest position of the V-shape of the first chute 1201 and the highest position of the V-shape of the second chute 1202 . The horizontal groove section includes a concave groove section arranged relative to the end face of the chute column.

The function of the horizontal groove section is to allow the door leaf to stay at will, and the concave groove section is to make the door leaf stay corresponding to this angle, so as to realize the positioning stability of the opening angle of the door leaf.

Further, the shaft bodies of the first drive shaft 901 and the second drive shaft 902 are respectively sheathed with sliding sleeves 10 .

The sliding sleeve allows the drive shaft to rotate more smoothly in the chute, reducing wear.

Further, the first cover is the shaft sleeve 5, the inner wall of the shaft sleeve 5 is provided with a spline groove, the first end 9001 extending into the inner cavity of the shaft sleeve 5 is provided with a spline shaft, and the central shaft 9 and the shaft sleeve 5 form a shaft To the matching structure of sliding connection and synchronous rotation, the axial sliding connection and synchronous rotation are realized between the central shaft 9 and the shaft sleeve 5 through the cooperation of the spline shaft and the spline groove.

The cooperation of the spline shaft and the spline groove enables the central shaft and the shaft sleeve to realize synchronous rotation and axial sliding connection more accurately, and the processing of the components is also convenient.

Embodiment three:

Referring to Figures 1 to 11,

Further, a hydraulic buffer mechanism is provided in the inner cavity of the outer sleeve 6 between the inner end surface of the first cover portion and the inner end surface of the chute column 12 .

The use of hydraulic buffer mechanism can control the closing speed of the door leaf, reduce the noise of closing the door and prevent the risk of hurting people due to excessive self-closing speed.

Further, the hydraulic buffer mechanism includes a spring stop portion, and the spring stop portion is the piston 8 .

Further, when the assembly method of the return spring 7 is specifically: when the return spring 7 is sleeved on the shaft body of the central shaft 9 between the upper end face of the piston 8 and the inner end face of the first cover, the upper end face of the piston 8 reaches the first cover. The space between the inner end faces of the piston 8 is the oil storage chamber 24 , and the space between the lower end face of the piston 8 and the inner end face of the chute column 12 is the pressure oil chamber 23 .

This assembly method is mainly suitable when the two-way opening and closing door shaft is applied to the lower part of the door leaf.

Further, a retaining ring 17 is provided between the return spring 7 and the upper end surface of the piston 8 .

The function of the retaining ring is also to reduce the wear caused by the relative movement between the return spring and the piston.

Further, a sealing ring 21 is arranged between the outer wall of the first cover part and the inner wall of the outer sleeve 6 , a sealing ring 21 is arranged between the outer wall of the piston 8 and the inner wall of the outer sleeve 6 , and the inner wall of the second cover 14 A sealing ring 21 is provided between the outer wall of the output shaft 1203 , and a sealing ring 21 is provided between the outer wall of the second cover 14 and the inner wall of the outer sleeve 6 .

The use of sealing rings can prevent hydraulic oil from leaking out.

Further, the piston 8 is a piston with a one-way valve.

Further, a magnet 25 is arranged at the bottom of the inner wall of the chute column 12 .

The magnet can absorb the fine metal chips produced by the wear between the components, keeping the hydraulic oil clean and the smooth movement of the door shaft. This assembly method is mainly suitable for the two-way opening and closing door shaft applied to the lower part of the door leaf, as shown in Figures 2 and 5.

Embodiment 4:

Referring to Figures 1 to 11,

Since the flow of hydraulic oil is controlled, the speed of closing the door can be adjusted more precisely.

Further, the specific structure of the hydraulic oil flow control mechanism is as follows: from the outer end face of the first end portion 9001 along the axis of the central shaft 9, a hole 903 is opened in its shaft body, and an oil return hole 904 is opened on the shaft body of the central shaft 9 to return oil. The hole 904 communicates with the hole channel 903. The speed regulating oil needle 4 is placed in the hole channel from top to bottom. Speed screw 2, one end of the speed control screw 2 is embedded with the speed control oil needle 4, the other end of the speed control screw 2 protrudes beyond the upper end face of the first cover and fixedly installs the adjusting wheel 1, the central shaft 9 and the first cover There is a gap between the two inner holes as an oil passage.

In this embodiment, the specific structure of the hydraulic oil flow control mechanism is mainly applicable when the two-way opening and closing door shaft is applied to the lower part of the door leaf.

The specific structure of the hydraulic oil flow control mechanism can also be as follows: from the outer end face of the first end portion 9001 along the axis of the central shaft 9, a hole 903 is opened in its shaft body, and an oil return hole 904 is opened on the shaft body of the central shaft 9 to return oil. The hole 904 communicates with the hole channel 903. The speed regulating oil needle 4 is placed in the hole channel from top to bottom. Speed screw 2, one end of the speed control screw 2 is embedded with the speed control oil needle 4, the other end of the speed control screw 2 protrudes beyond the upper end face of the first cover and fixedly installs the adjustment wheel 1, the upper end face of the first cover part A through hole is opened between the inner end face as an oil passage.

In the specific structure of the above two hydraulic oil flow control mechanisms, the oil return hole 904 is located on the shaft body of the central shaft 9 between the lower end face of the piston 8 and the inner end face of the chute column 12, or,

The oil return hole 904 is arranged on the outer end surface of the second end portion 9002 along the axis of the central shaft 9 to communicate with the hole 903 .

The actual function of the first cover part is to block one end of the outer casing to prevent the leakage of hydraulic oil, and the first cover part can be formed by the combination of the shaft sleeve 5 and the first cover 3, or can be set in other ways. .

The specific structure of the hydraulic oil flow control mechanism is mainly suitable for the application of the two-way opening and closing door shaft to the lower part of the door leaf.

Further, the speed regulating oil needle 4 exhibits a variable diameter in diameter.

Since the relevant parts of the speed-adjusting oil needle have different thicknesses, when the depth of the speed-adjusting oil needle entering the hole is adjusted from the top, the amount of hydraulic oil flowing in the hole can be changed, allowing the user to control the closing of the door according to needs. speed. The speed regulating oil needle is preferably tapered.

Further, a sealing ring 21 is arranged between the inner wall of the first cover 3 and the outer wall of the speed regulating screw 2, and a sealing ring 21 is arranged between the outer wall of the first cover and the inner wall of the first cover part.

The use of sealing rings can prevent hydraulic oil from leaking out.

Further, when the assembly method of the return spring 7 is specifically: when the return spring 7 is sleeved on the shaft body of the central shaft 9 between the upper end face of the piston 8 and the inner end face of the chute column 12, the upper end face of the piston 8 reaches the chute column. The space between the inner end faces of 12 is the oil storage chamber 24 , and the space between the lower end face of the piston 8 and the inner end face of the first cover is the pressure oil chamber 23 .

This assembly method is mainly suitable when the two-way opening and closing door shaft is applied to the upper part of the door leaf.

Further, a plane bearing 26 is provided between the upper end surface of the return spring 7 and the inner end surface of the chute column 12 .

The function of the plane bearing is to reduce the wear between the chute column and the return spring, so that the opening and closing of the door leaf is smoother. This assembly method is mainly suitable for the two-way opening and closing door shaft applied to the upper part of the door leaf, as shown in Figure 1 and Figure 4.

Further, a sealing ring 21 is arranged between the outer wall of the first cover and the inner wall of the outer sleeve 6 , a sealing ring 21 is arranged between the outer wall of the piston 8 and the inner wall of the outer sleeve 6 , and the inner wall of the second cover 14 A sealing ring 21 is provided between the outer wall of the output shaft 1203 , and a sealing ring 21 is provided between the outer wall of the second cover 14 and the inner wall of the outer sleeve 6 .

The use of sealing rings can prevent hydraulic oil from leaking out.

Further, the piston 8 is a piston with a one-way valve.

Further, a magnet 25 is provided on the inner end face of the first cover portion.

The magnet can absorb the fine metal chips produced by the wear between the components, keeping the hydraulic oil clean and the smooth movement of the door shaft.

Further, the specific structure of the hydraulic oil flow control mechanism is as follows: from the outer end face of the first end portion 9001 along the axis of the central shaft 9, a hole 903 is opened in its shaft body, and an oil return hole 904 is opened on the shaft body of the central shaft 9 to return oil. The hole 904 communicates with the hole 903. The speed regulating oil needle 4 is placed in the hole 903 from bottom to top. Speed screw 2, one end of the speed control screw 2 is embedded with the speed control oil needle 4, the other end of the speed control screw 2 protrudes beyond the upper end face of the first cover and fixedly installs the adjusting wheel 1, the central shaft 9 and the first cover There is a gap between the two inner holes as an oil passage.

The specific structure of the hydraulic oil flow control mechanism is mainly suitable for the application of the two-way opening and closing door shaft to the upper part of the door leaf.

The specific structure of the hydraulic oil flow control mechanism can also be as follows: the specific structure of the hydraulic oil flow control mechanism is: from the outer end face of the first end 9001 along the axis of the central shaft 9, a hole 903 is opened in its shaft body, The shaft body is provided with an oil return hole 904, and the oil return hole 904 communicates with the hole 903. The speed regulating oil needle 4 is placed in the hole 903 from bottom to top, and the first cover 3 is screwed on the outward end of the first cover. The central through hole of the cover 3 is screwed with a speed regulating screw 2, one end of the speed regulating screw 2 is embedded with a speed regulating oil needle 4, and the other end of the speed regulating screw 2 protrudes out of the upper end face of the first cover and is fixed and adjusted In the wheel 1, a through hole is formed between the upper end surface and the inner end surface of the first cover as an oil passage.

In the specific structure of the above two hydraulic oil flow control mechanisms, the oil return hole 904 is located on the shaft body of the central shaft 9 between the upper end face of the piston 8 and the inner end face of the chute column 12, or,

The oil return hole 904 is arranged on the outer end surface of the second end portion 9002 along the axis of the central shaft 9 to communicate with the hole channel 903 .

The use of sealing rings can prevent hydraulic oil from leaking out.

The preferred usage scenarios of the embodiments of the present invention are shown as follows:

When the two-way opening and closing door shaft is embedded in the upper part of the door leaf, the door shaft is fixed to the door leaf through the flange mounting hole 601 of the outer sleeve 6, and the output shaft 1203 is connected to the door frame through the component. In actual use, when the user opens and closes the door leaf, It is equal to the external force to rotate the output shaft 1203 to make the chute column 12 rotate as a whole. Since the central shaft 9 and the shaft sleeve 5 are connected in a synchronous axial sliding fit, the shaft sleeve 5, the outer sleeve 6 and the second cover 14 are fixed. Therefore, when the chute column 12 rotates, the first chute 1201 and the second chute 1202 are rotated and displaced, which drives the first drive shaft 901 in the first chute 1201 and the second drive shaft 902 in the first slide The upward displacement of the groove 1201, as shown in Fig. 10 from left to right, drives the central shaft 9 to move only axially. At the lowest position of the V-shape, no matter the first drive shaft 901 and the second drive shaft 902 are turned left or right, the central shaft 9 can be moved axially upward, and the piston also follows the movement and compresses the return spring 7 to store energy. The hydraulic oil in the oil storage chamber 24 flows to the pressurized oil chamber 23 through the one-way valve 22. When the first drive shaft 901 and the second drive shaft 902 are located at the highest position of the V-shape of the first chute and the second chute, they are parallel to the horizontal. When it is in the groove of the end face, the central shaft 9 does not move axially. When running to the groove section, the sliding sleeve 10 is clamped and positioned by the pressure of the return spring 7, and the circumferential movement of the central shaft is limited and stays at a fixed angle, and the return spring 7 is in energy storage. When the output shaft 1203 rotates, the positioning sleeve 20 also rotates, the positioning ball 15 is separated from the positioning hole 1401 and slides along the circumference of the hollow step surface of the second cover 14. During the process of the positioning ball 19 breaking away from the positioning hole 1401, the positioning ball 19 Upward movement compresses the positioning spring 16 to store energy, and when the output shaft 1203 turns left or right by 90 degrees, the positioning spring 16 releases energy to push the lower sphere of the positioning ball 19 into the positioning hole 1401 to achieve 90-degree enhanced positioning;

When the two-way opening and closing door shaft is in the open position, that is, the first drive shaft 901 and the second drive shaft 902 are located in the grooves parallel to the horizontal end face at the highest position of the V-shape of the first chute and the second chute, open the door as originally. Rotate the output shaft 1203 in the opposite direction to make the chute column 12 and the positioning sleeve 20 rotate as a whole. When the drive shaft 11 slides to the inclined section of the V-shaped chute, the return spring 7 releases energy to drive the piston 8 and the central shaft 9 to move downward. The second drive shaft 902 and the first drive shaft 901 also move downward, and slide to the lowest position at the bottom of the V-shaped groove through the inclined section of the V-shaped chute, so that the overall rotation and reset of the chute column 12 and the positioning sleeve 20 are realized. Automatically closes. During this rotation, the lower ball of the positioning ball 15 is released from the positioning hole 1401 to release the 90-degree engagement and positioning, and presses the positioning spring 16 to store energy. During the middle process, the positioning ball 15 is in the hollow step of the second cover 14 Then, the positioning spring 16 releases energy and pushes the lower sphere of the positioning ball 15 into the positioning hole 1401 to achieve 0-degree positioning. When the piston 8 moves downward, the one-way valve on the piston is closed and pushes the pressure oil chamber 230. The hydraulic oil flows to the oil storage chamber 24 through the oil return path provided by the central shaft 9, and the oil in the pressurized oil chamber 23 can pass through the first end 9001 of the central shaft. The gap flows to the hole 903 of the central shaft, and then flows to the oil storage chamber 24 through the oil return hole 904 on the hole. The user can control the return speed of the hydraulic oil to realize the buffer closing. Turn the speed adjustment screw 2 through the adjustment wheel 1 to change the vertebral needle. The insertion depth of the speed regulating oil needle 4 of the rod into the hole of the central shaft 9, changing the gap between the speed regulating oil needle 4 and the hole channel 903 to control the flow of hydraulic oil, and realize the adjustability of the closing speed.

When the two-way opening and closing door shaft is embedded in the lower part of the door leaf, the door shaft is fixed to the door leaf through the flange mounting hole 601 of the outer casing 6, and the output shaft 1203 is connected to the ground or the bottom of the door frame through the component. In actual use, the user opens and closes the door leaf. When there is an external force to rotate the output shaft 1203 to make the chute column 12 rotate as a whole, since the central shaft 9 and the shaft sleeve 5 are synchronously axially slidingly connected, the shaft sleeve 5, the outer sleeve 6 and the second cover 14 are three It is fixedly connected, so when the chute column 12 rotates, the first chute 1201 and the second chute 1202 are rotated and displaced, driving the first drive shaft 901 in the first chute 1201 and the second drive shaft 902 in the first A chute 1201 is displaced upward, as shown in Fig. 11 from right to left, and drives the central shaft 9 to move only axially. At the lowest position of the V-shape of the chute, no matter if the first drive shaft 901 and the second drive shaft 902 are turned left or right, the central shaft 9 can move axially upward, and the piston also follows the movement and compresses the return spring 7 for storage. The hydraulic oil in the oil storage chamber 24 flows to the pressurized oil chamber 23 through the one-way valve 22. When the first drive shaft 901 and the second drive shaft 902 are located in parallel with the highest point of the V shape of the first chute and the second chute When it is in the groove of the horizontal end face, the central shaft 9 does not move axially. When running to the groove section, the sliding sleeve 10 is clamped and positioned by the pressure of the return spring 7. The circumferential movement of the central shaft is limited and stays at a fixed angle. In the state of energy storage, when the output shaft 1203 rotates, the positioning sleeve 20 also rotates, the positioning ball 15 slips away from the positioning hole 1401 along the circumference of the hollow step surface of the second cover 14, and the positioning ball 19 is separated from the positioning hole 1401. The positioning ball 19 moves downward and compresses the positioning spring 16 to store energy. When the output shaft 1203 turns left or right by 90 degrees, the positioning spring 16 discharges energy and pushes the upper sphere of the positioning ball 19 into the positioning hole 1401 to achieve 90-degree enhanced positioning ;

When the two-way opening and closing door shaft is in the open position, that is, the first drive shaft 901 and the second drive shaft 902 are located in the grooves parallel to the horizontal end face at the highest position of the V-shape of the first chute and the second chute, open the door as originally. Rotate the output shaft 1203 in the opposite direction to make the chute column 12 and the positioning sleeve 20 rotate as a whole. When the drive shaft 11 slides to the inclined section of the V-shaped chute, the return spring 7 releases energy to drive the piston 8 and the central shaft 9 to move downward. The second drive shaft 902 and the first drive shaft 901 also move downward, and slide to the lowest position at the bottom of the V-shaped groove through the inclined section of the V-shaped chute, so that the overall rotation and reset of the chute column 12 and the positioning sleeve 20 are realized. Automatically closes. During this rotation, the upper sphere of the positioning ball 15 is released from the positioning hole 1401 to release the 90-degree engagement and positioning, and presses the positioning spring 16 to store energy. During the middle process, the positioning ball 15 is in the hollow step of the second cover 14. Then, the positioning spring 16 releases energy and pushes the upper ball of the positioning ball 15 into the positioning hole 1401 to achieve 0-degree positioning. When the piston 8 moves downward, the one-way valve 22 on the piston closes and pushes the pressurized oil chamber 23 The hydraulic oil flows to the oil storage chamber 24 through the oil return path provided by the central shaft 9, and the oil in the pressurized oil chamber 23 can flow to the hole 903 of the central shaft through the oil return hole 904, and then pass through the central shaft and the first cover or shaft. The gap between the casings flows to the oil storage chamber 24 . The user can control the backflow speed of the hydraulic oil to realize the buffer closing, and turn the speed regulating screw 2 through the adjusting wheel 1 to change the insertion depth of the speed regulating oil needle 4 of the vertebral needle rod into the hole of the central shaft 9, and change the speed regulating oil needle 4 and the speed regulating oil needle 4. The gap between the orifices 903 controls the flow of hydraulic oil and realizes the adjustability of the closing speed.

A two-way opening and closing door shaft provided by the embodiments of the present invention has been introduced in detail above. The principles and implementations of the present invention are described with specific examples. The descriptions of the above embodiments are only used to help understand the utility At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. To sum up, the content of this specification should not be construed as a limitation of the present invention. .

Claims

A two-way opening and closing door shaft, characterized in that it comprises: an outer sleeve (6), a first cover part, a second cover part, an output shaft (1203), a chute column (12), a central shaft (9), a reset A spring (7), a spring stop, a flange is provided at one end of the outer sleeve (6), a flange mounting hole (601) is provided on the flange, and the outer sleeve (6) is close to the flange mounting hole The second cover part is arranged in the lumen of (601), the first cover part is arranged in the lumen of the other end of the outer sleeve (6), and the outer sleeve (6) is connected to the first cover part. The cover portion and the second cover portion are fixedly connected, the first end portion (9001) of the central shaft (9) extends into the inner cavity of the first cover portion, and the central shaft (9) is connected to the first end portion (9001) of the central shaft (9). A cover part forms a matching structure of axial sliding connection and synchronous rotation, the second end part (9002) of the central shaft (9) protrudes into the inner cavity of the chute column (12), (9002) is provided with a first drive shaft (901) and a second drive shaft (902) that are arranged in a staggered up and down direction, and the chute column is provided with a first chute (1201) and a second Second chute (1202), the first chute (1201) and the second chute (1202) are both V-shaped, and the first drive shaft (901) extends into the first chute (1201), the second drive shaft (902) extends into the second chute (1202), the bottom of the chute column (12) extends out of the output shaft (1203), the output shaft (1203) protrudes from the inner cavity of the second cover, the output shaft (1203) and the chute column (12) are movably connected with the second cover, the output shaft (1203) and The chute column (12) only moves circumferentially in the lumen of the outer sleeve (6), the spring stopper is fixedly embedded in the middle section of the central shaft (9), and the return spring ( 7) The assembly method is to fit the return spring (7) on the central shaft ( 9) On the shaft body;

Wherein, when the output shaft (1203) and the chute column (12) move circumferentially in the lumen of the outer sleeve (6), and the first drive shaft (901) is in the first A sliding groove (1201) slides in and slides from the lowest position of the V-shaped to the highest position of the V-shaped, the second drive shaft (902) slides in the second sliding groove (1202) and slides from the lowest position of the V-shaped When sliding to the highest position of the V-shape, the spring stopper moves axially and compresses the return spring (7).
A two-way opening and closing door shaft according to claim 1, characterized in that, the inner cavity of the outer sleeve (6) is further provided with a reinforced positioning mechanism, and the second cover is a second cover (14), The reinforced positioning mechanism comprises a second cover (14), a positioning sleeve (20), a positioning ball (15), and a positioning spring (16). An annular shape with a hollow stepped surface, the hollow stepped surface is provided with a plurality of positioning holes (1401), and the positioning sleeve (20) is in the shape of an annular shape as a whole and is fixedly sleeved on the middle section of the output shaft (1203). , the positioning sleeve (20) is respectively provided with a through hole (2001) corresponding to the position of the positioning hole (1401), and a positioning ball (15) and a positioning spring (16) are vertically arranged in the through hole, The positioning ball (15) can be pushed into the positioning hole (1401) by the positioning spring (16), and the output shaft (1203) penetrates the second cover (14) and the positioning sleeve (20) .
A two-way opening and closing door shaft according to claim 2, characterized in that the outer end face of the chute column (12) facing the output shaft (1203) and the outer end surface of the chute column (12) facing the output shaft (1203) A plurality of steel balls (13) are arranged between the inner end surfaces of the second cover (14).
The two-way opening and closing door shaft according to claim 2, characterized in that, a position of the positioning sleeve (20) perpendicular to the axis is provided with a position for connecting the positioning sleeve (20) with the output shaft (1203) The movement of the set screw (19) is synchronously connected.
A two-way opening and closing door shaft according to claim 2, characterized in that, after the output shaft (1203) passes through the positioning sleeve (20), it also passes through the rolling bearing 18 and the retaining ring 17 in sequence, and the bearing The rolling bearing 18 is provided between the outer ring 1801 and the bearing inner ring 1802 .
The two-way opening and closing door shaft according to claim 2, characterized in that, after the output shaft (1203) passes through the positioning sleeve (20), it also sequentially passes through the rolling bearing 18 and the retaining ring 17, and the outer ring of the bearing The rolling bearing 18 is disposed between 1801 and the bearing inner ring 1802, and the bearing inner ring is fixedly connected with the output shaft (1203).
The two-way opening and closing door shaft according to claim 2, characterized in that the highest position of the V-shape of the first chute (1201) and the highest position of the V-shape of the second chute (1202) Each is provided with a horizontal groove section parallel to the end face of the chute column (12), and the horizontal groove section includes a concave groove section arranged relative to the end face of the chute column.
The two-way opening and closing door shaft according to any one of claims 2 to 7, wherein the shaft bodies of the first drive shaft (901) and the second drive shaft (902) are respectively sleeved with sliding sleeves (10).
A two-way opening and closing door shaft according to any one of claims 2 to 7, wherein the first cover part is a shaft sleeve (5), and the inner wall of the shaft sleeve (5) is provided with a spline groove, The first end (9001) extending into the inner cavity of the shaft sleeve (5) is provided with a spline shaft, and the central shaft (9) forms an axial sliding connection and synchronization with the shaft sleeve (5) In the rotating matching structure, the axial sliding connection and synchronous rotation are realized between the central shaft (9) and the shaft sleeve (5) through the cooperation of the spline shaft and the spline groove.
A two-way opening and closing door shaft according to any one of claims 2 to 7, characterized in that the outer sleeve between the inner end face of the first cover part and the inner end face of the chute column (12) The inner cavity of (6) is provided with a hydraulic buffer mechanism.
A two-way opening and closing door shaft according to claim 10, characterized in that, the hydraulic buffer mechanism comprises the spring blocking part, and the spring blocking part is the piston (8).
A two-way opening and closing door shaft according to claim 11, characterized in that when the return spring (7) is assembled in a specific way: the return spring (7) is sleeved on the piston (8) When the central shaft (9) between the end face and the inner end face of the first cover part is on the shaft body, the space between the upper end face of the piston (8) and the inner end face of the first cover part is: An oil storage chamber (24), the space between the lower end face of the piston (8) and the inner end face of the chute column (12) is a pressure oil chamber (23).
A two-way opening and closing door shaft according to claim 12, characterized in that a retaining ring (17) is arranged between the return spring (7) and the upper end surface of the piston (8).
A two-way opening and closing door shaft according to claim 13, characterized in that a sealing ring (21) is arranged between the outer wall of the first cover part and the inner wall of the outer sleeve (6), A sealing ring (21) is arranged between the outer wall of the piston (8) and the inner wall of the outer sleeve (6), and between the inner wall of the second cover (14) and the outer wall of the output shaft (1203) A sealing ring (21) is arranged between the two, and a sealing ring (21) is arranged between the outer wall of the second cover (14) and the inner wall of the outer sleeve (6).
A two-way opening and closing door shaft according to any one of claims 12, 13 and 14, characterized in that, the piston (8) is a piston with a one-way valve (22).
A two-way opening and closing door shaft according to any one of claims 12, 13 and 14, characterized in that a magnet (25) is provided at the bottom of the inner wall of the chute column (12).
A two-way opening and closing door shaft according to any one of claims 12, 13 and 14, wherein the two-way opening and closing door shaft is further provided with a hydraulic oil flow control mechanism.
The two-way opening and closing door shaft according to claim 17, wherein the specific structure of the hydraulic oil flow control mechanism is: from the outer end face of the first end portion (9001) along the central axis ( The axis of 9) is provided with a hole (903) on its shaft body, and an oil return hole (904) is set on the shaft body of the central shaft (9), and the oil return hole (904) is communicated with the hole (903), A speed regulating oil needle (4) is placed in the hole from top to bottom, a first cover (3) is screwed on the outward end of the first cover, and the center of the first cover (3) The speed regulating screw (2) is screwed into the through hole, one end of the speed regulating screw (2) is embedded with the speed regulating oil needle (4), and the other end of the speed regulating screw (2) protrudes to the first seal. A regulating wheel (1) is fixedly installed outside the upper end face of the cover, and a gap is left between the central shaft (9) and the inner hole of the first cover portion as an oil passage.
The two-way opening and closing door shaft according to claim 17, wherein the specific structure of the hydraulic oil flow control mechanism is: from the outer end face of the first end portion (9001) along the central axis ( The axis of 9) is provided with a hole (903) on its shaft body, and an oil return hole (904) is set on the shaft body of the central shaft (9), and the oil return hole (904) is communicated with the hole (903), A speed regulating oil needle (4) is placed in the hole from top to bottom, a first cover (3) is screwed on the outward end of the first cover, and the center of the first cover (3) The speed regulating screw (2) is screwed into the through hole, one end of the speed regulating screw (2) is embedded with the speed regulating oil needle (4), and the other end of the speed regulating screw (2) protrudes to the first seal. The adjusting wheel (1) is fixedly installed outside the upper end face of the cover, and a through hole is opened between the upper end face and the inner end face of the first cover part as an oil passage.
The two-way opening and closing door shaft according to claim 18 or 19, wherein the oil return hole (904) is located on the lower end face of the piston (8) and the inner end face of the chute column (12) between the central axis (9) on the shaft body, or,

The oil return hole (904) is arranged on the outer end surface of the second end portion (9002) along the axis of the central shaft (9) to communicate with the hole channel (903).
A two-way opening and closing door shaft according to claim 18 or 19, characterized in that, the speed regulating oil needle (4) exhibits a variable diameter in diameter.
A two-way opening and closing door shaft according to claim 18 or 19, characterized in that a sealing ring is provided between the inner wall of the first cover (3) and the outer wall of the speed regulating screw (2). (21) A sealing ring (21) is provided between the outer wall of the first cover and the inner wall of the first cover part.
A two-way opening and closing door shaft according to claim 11, characterized in that when the return spring (7) is assembled in a specific way: the return spring (7) is sleeved on the piston (8) When the center shaft (9) between the end face and the inner end face of the chute column (12) is on the shaft body, the upper end face of the piston (8) is located between the inner end face of the chute column (12). The space between them is an oil storage chamber (24), and the space between the lower end face of the piston (8) and the inner end face of the first cover portion is a pressure oil chamber (23).
A two-way opening and closing door shaft according to claim 23, characterized in that a plane bearing (26) is arranged between the upper end face of the return spring (7) and the inner end face of the chute column (12). .
A two-way opening and closing door shaft according to claim 25, characterized in that a sealing ring (21) is provided between the outer wall of the first cover part and the inner wall of the outer sleeve (6), A sealing ring (21) is arranged between the outer wall of the piston (8) and the inner wall of the outer sleeve (6), and between the inner wall of the second cover (14) and the outer wall of the output shaft (1203) A sealing ring (21) is arranged between the two, and a sealing ring (21) is arranged between the outer wall of the second cover (14) and the inner wall of the outer sleeve (6).
A two-way opening and closing door shaft according to any one of claims 23, 24 and 25, characterized in that, the piston (8) is a piston with a one-way valve (22).
A two-way opening and closing door shaft according to any one of claims 23, 24 and 25, characterized in that a magnet (25) is arranged on the inner end face of the first cover part.
A two-way opening and closing door shaft according to any one of claims 23, 24 and 25, wherein the two-way opening and closing door shaft is further provided with a hydraulic oil flow control mechanism.
A two-way opening and closing door shaft according to claim 28, characterized in that the specific structure of the hydraulic oil flow control mechanism is: from the outer end face of the first end portion (9001) along the central axis (9) The axis is provided with a hole (903) on its shaft body, and an oil return hole (904) is formed on the shaft body of the central shaft (9), and the oil return hole (904) is communicated with the hole (903). The speed regulating oil needle (4) is placed in the hole (903) from bottom to top, the first cover (3) is screwed on the outward end of the first cover, and the center of the first cover (3) is connected The speed regulating screw (2) is screwed into the hole, one end of the speed regulating screw (2) is embedded with the speed regulating oil needle (4), and the other end of the speed regulating screw (2) protrudes to the first cover A regulating wheel (1) is fixedly installed outside the upper end face, and a gap is left between the central shaft (9) and the inner hole of the first cover portion as an oil passage.
A two-way opening and closing door shaft according to claim 28, characterized in that the specific structure of the hydraulic oil flow control mechanism is: from the outer end face of the first end portion (9001) along the central axis (9) The axis is provided with a hole (903) on its shaft body, and an oil return hole (904) is formed on the shaft body of the central shaft (9), and the oil return hole (904) is communicated with the hole (903). The speed regulating oil needle (4) is placed in the hole (903) from bottom to top, the first cover (3) is screwed on the outward end of the first cover, and the center of the first cover (3) is connected The speed regulating screw (2) is screwed into the hole, one end of the speed regulating screw (2) is embedded with the speed regulating oil needle (4), and the other end of the speed regulating screw (2) protrudes to the first cover A regulating wheel (1) is fixedly mounted outside the upper end surface, and a through hole is formed between the upper end surface and the inner end surface of the first cover portion as an oil passage.
The two-way opening and closing door shaft according to claim 29 or 30, wherein the oil return hole (904) is located on the upper end face of the piston (8) and the inner end face of the chute column (12) between the central axis (9) on the shaft body, or,

The oil return hole (904) is arranged on the outer end surface of the second end portion (9002) along the axis of the central shaft (9) to communicate with the hole channel (903).
A two-way opening and closing door shaft according to claim 29 or 30, characterized in that, the speed regulating oil needle (4) exhibits a variable diameter in diameter.
A two-way opening and closing door shaft according to claim 29 or 30, characterized in that a sealing ring is provided between the inner wall of the first cover (3) and the outer wall of the speed regulating screw (2). (21) A sealing ring (21) is provided between the outer wall of the first cover and the inner wall of the first cover part.