JP2023511989A - Two-way opening and closing door shaft - Google Patents

Abstract

A bi-directional opening and closing door shaft is provided. A two-way open/close door shaft of the present invention comprises an outer sleeve tube (6), a first lid portion, a second lid portion, an output shaft (1203), a sliding groove post (12), and a central shaft (9). , return spring (7), etc. The sliding groove pillar (12) is provided with a first sliding groove (1201) and a second sliding groove (1202) which are vertically displaced and opposed to each other. Both the first sliding groove (1201) and the second sliding groove (1202) are "V" shaped. The first drive shaft (901) extends into the first slide groove (1201). A second drive shaft (902) extends into the second slide groove (1202). The cylinder bottom of the sliding groove post (12) extends from the output shaft (1203). An output shaft (1203) extends from the internal cavity of the second lid. The output shaft (1203) and the sliding channel post (12) are movably connected to the second lid. The output shaft (1203) and slide post (12) move only circumferentially within the tube cavity of the outer sleeve tube (6). The spring stop is fixedly fitted to the middle portion of the central shaft (9). [Selection drawing] Fig. 1

Description

The present invention relates to the field of door and window hardware fittings, and more particularly to door shafts.

Currently, there are many types of products used for automatic shock closing doors on the market. Two-way opening door shaft products are mainly floor springs. When installing floor springs, it is necessary to dig a hole in the ground and bury it. In that case, it is more troublesome to destroy the floorboards and dig holes. The biggest drawback is the safety hazard of punching the floorboards. Because the distance between the center of the output shaft of the floor spring and the door frame is relatively long, after the door leaf is opened, the gap between the door leaf and the door frame is relatively large, so that children's hands can easily enter and the door leaf can During the automatic closing process, it is easy to pinch the hand and cause injury. Another product is a self-closing door shaft. While the door leaf is opened and closed, the gap between the door leaf and the door frame does not change, so it is relatively safe, but it can only be opened in one direction, which is not suitable for public use. There are also door shafts that open and close in both directions. Since there is no positioning function, the door leaf is easy to open by the wind during use. For the above various reasons, it is very inconvenient for users to use.

An embodiment of the present invention provides a bi-directional opening and closing door shaft. Using the technical solution provided by this embodiment, using the two-way opening and closing door shaft installed in the door leaf, during the opening and closing of the door leaf, the gap between the door leaf and the door frame is basically unchanged, Prevent children from putting their hands in and getting hurt. In addition, with enhanced positioning function, the parking angle is more accurate during opening and closing of the door leaf, which can meet the needs of safety and aesthetics in modern social life.

The objects of the embodiments of the present invention are achieved by the following technical means.

The present invention provides a bi-directional opening and closing door shaft. This two-way open/close door shaft includes an outer sleeve tube, a first lid, a second lid, an output shaft, a sliding groove post, a central shaft, a return spring and a spring stop, with a flange at one end of the outer sleeve tube. is provided in the flange with flange mounting holes, a second lid is disposed in the tube cavity near the flange mounting holes in the outer sleeve tube, and the first lid is in the tube cavity at the other end of the outer sleeve tube is disposed, the outer sleeve tube is fixedly connected to the first lid and the second lid, the first end of the central shaft extends into the internal cavity of the first lid, and the central shaft and the first The lid forms a matching structure for axial sliding connection and synchronous rotation, the second end of the central shaft extends into the internal cavity of the sliding channel, and the second end has an opposing A first drive shaft and a second drive shaft are arranged with a vertical displacement, and the sliding groove pillar has a first sliding groove and a second sliding groove that are arranged with a vertical displacement and are opposed to each other. is provided, the shapes of the first sliding groove and the second sliding groove are both V-shaped, the first driving shaft extends into the first sliding groove, and the second driving shaft extends into the second extending into the slide groove, an output shaft extending from the barrel bottom of the slide groove post, the output shaft extending from the internal cavity of the second lid, the output shaft and the slide groove post being connected to the second lid; , the output shaft and sliding channel post move only in the circumferential direction within the tube cavity of the outer sleeve tube, and the spring detent fixation is fixedly fitted to the intermediate portion of the central shaft to provide a return The method of assembling the spring is to mount the return spring on the shaft of the central axis between the upper end surface of the spring stop portion and the inner end surface of the member above the spring stop portion that does not move in the axial direction,
The output shaft and slide post move circumferentially within the tube cavity of the outer sleeve tube, and the first drive shaft slides within the first slide groove from the lowest point of the V to the highest point of the V. and the second drive shaft slides in the second slide groove to slide from the lowest part of the V to the highest part of the V, the spring stop moves axially to Compress the return spring.

In addition, the inner cavity of the outer sleeve tube is further mounted with a reinforcing positioning mechanism, the second lid is a second sealing lid, the reinforcing positioning mechanism comprises a second sealing lid, a positioning sleeve, a positioning ball, and a positioning spring , the second sealing lid generally has an annular shape with both ends recessed inward and a hollow step surface in the middle portion, the hollow step surface is provided with a plurality of positioning holes, and the positioning sleeve is generally The positioning sleeve has a through hole at a position corresponding to the positioning hole, and the positioning ball and the positioning spring are vertically arranged in the through hole. , the positioning ball can be pushed into the positioning hole by the positioning spring, and the output shaft passes through the second sealing lid and the positioning sleeve.

Further, a plurality of steel balls are provided between the outer end surface of the sliding groove pillar facing the output shaft and the inner end surface of the second seal lid facing the sliding groove pillar.

In addition, a set screw is provided at a position perpendicular to the axis of the positioning sleeve for synchronously connecting the movement of the positioning sleeve and the output shaft.

Furthermore, after passing through the positioning sleeve, the output shaft passes through the bearing outer ring, the bearing inner ring, and the retaining ring in order, and a rolling bearing is provided between the bearing outer ring and the bearing inner ring.

Furthermore, after passing through the positioning sleeve, the output shaft passes through the bearing outer ring and the bearing inner ring in order. A rolling bearing is provided between the bearing outer ring and the bearing inner ring, and the bearing inner ring is fixedly connected to the output shaft.

Further, the highest portion of the V-shape of the first sliding groove and the highest portion of the V-shape of the second sliding groove are each provided with a horizontal groove portion parallel to the end surface of the sliding groove pillar. It includes a concave groove positioned against the end face of the channel post.

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

Further, the first lid 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 The shaft sleeve forms a matching structure for axial sliding connection and synchronous rotation, and the central shaft and the shaft sleeve achieve axial sliding connection and synchronous rotation by matching the spline shaft and the spline groove.

Furthermore, a hydraulic damping mechanism is provided in the internal cavity of the outer sleeve tube between the inner end surface of the first lid portion and the inner end surface of the sliding groove post.

Additionally, the hydraulic dampening mechanism includes a spring stop. The spring stop is a piston.

Further, the method of assembling the return spring is specifically as follows. When the return spring is mounted on the shaft body of the central axis between the upper end surface of the piston and the inner end surface of the first lid portion, the space between the upper end surface of the piston and the inner end surface of the first lid portion is an oil storage chamber. , and the space between the lower end surface of the piston and the inner end surface of the sliding groove column is a pressure receiving oil chamber.

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

Furthermore, a seal ring is provided between the outer wall of the first lid and the inner wall of the outer sleeve tube, a seal ring is provided between the outer wall of the piston and the inner wall of the outer sleeve tube, and the inner wall of the second seal lid is provided. A seal ring is provided between the outer wall of the output shaft and a seal ring 21 is provided between the outer wall of the second seal lid and the inner wall of the outer sleeve tube.

Furthermore, the piston is a piston with a non-return valve.

Furthermore, a magnet is provided at the bottom of the inner wall of the sliding groove post.

Further, the bi-directional opening/closing door shaft is further provided with a hydraulic oil flow rate control mechanism.

Furthermore, the specific structure of the hydraulic oil flow rate control mechanism is as follows. A hole passage is provided in the shaft body along the axis of the central shaft from the outer end surface of the first end portion, an oil return hole is provided in the shaft body of the central shaft, and the oil return hole communicates with the hole passage. A speed adjusting oil needle is arranged from top to bottom inside, a first sealing cover is screwed to the outward end of the first cover, and a speed adjusting screw is screwed into the center passing hole of the first sealing cover. A speed adjusting oil needle is fitted to one end of the speed adjusting screw, the other end of the speed adjusting screw extends outside the upper end surface of the first seal lid, an adjusting wheel is fixed, and the central shaft and the first A gap remains as an oil passage between the inner holes of the first lid portion.

Furthermore, the specific structure of the hydraulic oil flow rate control mechanism is as follows. A hole passage is provided in the shaft body along the axis of the central shaft from the outer end surface of the first end portion, an oil return hole is provided in the shaft body of the central shaft, and the oil return hole communicates with the hole passage. A speed adjusting oil needle is arranged from top to bottom inside, a first sealing cover is screwed to the outward end of the first cover, and a speed adjusting screw is screwed into the center passing hole of the first sealing cover. A speed regulating oil needle is fitted to one end of the speed regulating screw, the other end of the speed regulating screw extends outside the upper end surface of the first seal lid, an adjusting ring is fixed, and the first lid portion A through hole is provided as an oil passage between the upper end surface and the inner end surface of the .

In the specific structures of the two hydraulic oil flow rate control mechanisms described above, the oil return hole is located on the shaft of the central axis between the lower end surface of the piston and the inner end surface of the sliding groove post.

Alternatively, the oil return hole is arranged along the axis of the central shaft on the outer end surface of the second end so as to communicate with the hole passage.

In addition, the speed adjusting oil needle exhibits an out-of-diameter.

Further, a seal ring is provided between the inner wall of the first sealing lid and the outer wall of the speed adjusting screw, and a sealing ring is provided between the outer wall of the first sealing lid and the inner wall of the first lid.

Further, the method of assembling the return spring is specifically as follows. When the return spring is mounted on the central shaft body between the upper end surface of the piston and the inner end surface of the sliding groove post, the space between the upper end surface of the piston and the inner end surface of the sliding groove post is an oil storage chamber. , and the space between the lower end surface of the piston and the inner end surface of the first lid portion is a pressure receiving oil chamber.

Further, a plane bearing is provided between the upper end surface of the return spring and the inner end surface of the sliding groove post.

Furthermore, a seal ring is provided between the outer wall of the first lid and the inner wall of the outer sleeve tube, a seal ring is provided between the outer wall of the piston and the inner wall of the outer sleeve tube, and the inner wall of the second seal lid is provided. A seal ring is provided between the outer wall of the output shaft and a seal ring 21 is provided between the outer wall of the second seal lid and the inner wall of the outer sleeve tube.

Furthermore, the piston is a piston with a non-return valve.

Furthermore, a magnet is provided on the inner end surface of the first lid portion.

In addition, the two-way opening/closing pivot is further provided with a hydraulic oil flow rate control mechanism.

Furthermore, the specific structure of the hydraulic oil flow rate control mechanism is as follows. A hole passage is provided in the shaft body along the axis of the central shaft from the outer end surface of the first end portion, an oil return hole is provided in the shaft body of the central shaft, and the oil return hole communicates with the hole passage. A speed adjusting oil needle is arranged from the bottom to the top inside, a first seal lid is screwed to the outward end of the first lid portion, and a speed adjusting screw is screwed into the center passing hole of the first seal lid. A speed adjusting oil needle is fitted to one end of the speed adjusting screw, the other end of the speed adjusting screw extends outside the upper end surface of the first seal lid, an adjusting wheel is fixed, and the central shaft and the first A gap remains as an oil passage between the inner holes of the first lid portion.

Furthermore, the specific structure of the hydraulic oil flow rate control mechanism is as follows. A hole passage is provided in the shaft body along the axis of the central shaft from the outer end surface of the first end portion, an oil return hole is provided in the shaft body of the central shaft, and the oil return hole communicates with the hole passage. A speed adjusting oil needle is arranged from the bottom to the top inside, a first seal lid is screwed to the outward end of the first lid portion, and a speed adjusting screw is screwed into the center passing hole of the first seal lid. A speed regulating oil needle is fitted to one end of the speed regulating screw, the other end of the speed regulating screw extends outside the upper end surface of the first seal lid, an adjusting ring is fixed, and the first lid portion A through hole is provided as an oil passage between the upper end surface and the inner end surface of the .

In the specific structures of the two hydraulic oil flow rate control mechanisms described above, the oil return hole is located on the shaft of the central axis between the upper end surface of the piston and the inner end surface of the sliding groove post.

Alternatively, the oil return hole is arranged along the axis of the central shaft on the outer end surface of the second end so as to communicate with the hole passage 903 .

In addition, the speed adjusting oil needle exhibits an out-of-diameter.

Further, a seal ring is provided between the inner wall of the first sealing lid and the outer wall of the speed adjusting screw, and a sealing ring is provided between the outer wall of the first sealing lid and the inner wall of the first lid.

By using the technical solution of the present invention, it solves the troublesome and operational dangers of digging and installing floor springs. To solve the inconvenience of using a one-way closing door shaft, and solve the problem that the conventional two-way closing door shaft is inaccurately positioned and the door leaf shifts after closing.

Fig. 1 is an assembly cross-sectional schematic view of the first embodiment of the present invention, that is, a two-way door shaft, which is mounted on the upper part of the door leaf and assembled with the left door frame and the right door leaf; used. Fig. 2 is an assembly cross-sectional schematic view of the second embodiment of the present invention, that is, a two-way door shaft, which is attached to the lower part of the door leaf and assembled with the left door frame and the right door leaf; used. FIG. 2 is a schematic top view of the relative movement of the door frame and the door leaf, to which the two-way opening and closing door shaft of the present invention is installed, the left side being the door frame and the right side being the door leaf; FIG. 2 is a schematic diagram of a cross-sectional structural member of the first embodiment of the present invention shown in FIG. 1; FIG. 3 is a schematic view of a cross-sectional structural member of the second embodiment of the present invention of FIG. 2; FIG. 3 is a schematic three-dimensional structure diagram of a sliding groove post and an output shaft in the second embodiment of the present invention of FIG. 2 ; FIG. 4 is a structural schematic diagram of a central shaft; It is a structural schematic diagram of a second sealing lid. FIG. 4 is a structural schematic diagram of a positioning sleeve; FIG. 2 is a schematic cross-sectional view of the energy release (left view) and energy storage (right view) states of the first embodiment of the two-way door shaft of the present invention in FIG. 1; FIG. 3 is a schematic cross-sectional structural view of the second embodiment of the two-way opening and closing door shaft of the present invention in FIG.

In order to further clarify the purpose, technical means and advantages of the present invention, the present invention will now be described in more detail with reference to the drawings and examples. See FIGS. 1-10.

In the present invention, the two-way opening and closing door shaft can be mounted on the top or bottom of the door leaf. The structures of the upper and lower mounted two-way open door shafts may or may not match. The reason for the discrepancy is to consider the action of gravity. When using a hydraulic damping mechanism, it is preferable to consider that the upper part is the oil storage chamber and the lower part is the pressure receiving oil chamber in the direction perpendicular to the ground. Since the pressure receiving oil chamber must be protected from air, air can enter if the pressure receiving oil chamber is located at the top. The compressive elasticity of air is large, and the damping effect of hydraulic pressure damping is reduced.

Example 1

See FIGS. 1-7.

The present invention provides a bi-directional opening and closing door shaft. This bi-directional opening and closing door shaft includes an outer sleeve tube 6, a first lid, a second lid, an output shaft 1203, a sliding channel post 12, a central shaft 9, a return spring 7, and a spring stop. A flange is provided at one end of the outer sleeve tube 6 and a flange attachment hole 601 is provided in the flange. A second lid is placed in the tube cavity near the flange attachment hole 601 in the outer sleeve tube 6 . A first lid is placed in the tube cavity at the other end of the outer sleeve tube 6 . An outer sleeve tube 6 is fixedly connected to the first lid and the second lid. A first end 9001 of the central shaft 9 extends into the internal cavity of the first lid. The central shaft 9 and the first lid form a matching structure for axial sliding connection and synchronous rotation. A second end 9002 of the central shaft 9 extends into the inner cavity of the slide post 12 . The second end portion 9002 is provided with a first drive shaft 901 and a second drive shaft 902 that face each other and are displaced vertically. The sliding groove column is provided with a first sliding groove 1201 and a second sliding groove 1202 which are arranged facing each other with a vertical shift. Both the first sliding groove 1201 and the second sliding groove 1202 are V-shaped. The first drive shaft 901 extends into the first slide groove 1201 and the second drive shaft 902 extends into the second slide groove 1202 . An output shaft 1203 extends from the cylinder bottom of the sliding groove post 12 . The output shaft 1203 extends from the internal cavity of the second lid. The output shaft 1203 and the slide post 12 are movably connected to the second lid. The output shaft 1203 and the slide post 12 move only circumferentially within the tube cavity of the outer sleeve tube 6 . The spring stop portion is fixedly fitted to the intermediate portion of the central shaft 9 . The method of assembling the return spring 7 is to mount the return spring 7 on the center shaft 9 between the upper end surface of the spring stop portion and the inner end surface of the member that does not move in the axial direction above the spring stop portion. .

The output shaft 1203 and the slide pillar 12 move circumferentially within the tube cavity of the outer sleeve tube 6, and the first drive shaft 901 slides within the first slide groove 1201 to slide from the bottom of the V-shape. When sliding to the highest point of the V and the second drive shaft 902 slides in the second slide groove 1202 to slide from the lowest point of the V to the highest point of the V, the spring stop will: Axial movement causes the return spring 7 to compress.

In this embodiment, both the first sliding groove 1201 and the second sliding groove 1202 are V-shaped. The first drive shaft 901 extends in the first slide groove 1201 and the second drive shaft 902 extends in the second slide groove 1202 . When the first drive shaft 901 and the second drive shaft 902 are at the lowest part of the V-shape of their sliding grooves, the door shaft is in the energy releasing state, ie the most stable state. In this case, the first drive shaft and the second drive shaft can be selected to slide to the left ramp or to the right ramp in their respective slide grooves. Through interlocking and energy storage, the door leaf can realize two-way opening and closing. This product is fitted in the door leaf, and the gap between the door leaf and the door frame remains basically unchanged when the door is opened and closed, preventing children from putting their hands in and getting hurt. In addition, due to its positioning function, it can meet the needs of safety and aesthetics in modern social life.

Example 2

See FIGS. 1-11.

Furthermore, the internal cavity of the outer sleeve tube 6 is further fitted with a reinforcing positioning mechanism. The second lid portion is the second sealing lid 14 . The enhanced positioning mechanism includes a second sealing lid 14 , a positioning sleeve 20 , a positioning ball 15 and a positioning spring 16 . The second seal lid 14 generally has an annular shape with both ends recessed inward and a hollow stepped surface in the middle portion. A plurality of positioning holes 1401 are provided in the hollow step surface. The positioning sleeve 20 has a generally annular shape and is fixedly mounted on the intermediate portion of the output shaft 1203 . Through holes 2001 are provided at positions corresponding to the positioning holes 1401 in the positioning sleeve 20 . 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 . The output shaft 1203 passes through the second seal lid 14 and the positioning sleeve 20 .

This embodiment further has an enhanced positioning function, so that it can meet the needs of safety and aesthetics in modern social life.

Further, a plurality of steel balls 13 are provided between the outer end surface of the sliding groove post 12 facing the output shaft 1203 and the inner end surface of the second seal lid 14 facing the sliding groove post 12 .

The action of the steel balls is to reduce the wear between the second seal lid and the sliding channel post.

Further, a set screw 19 is provided at a position perpendicular to the axis of the positioning sleeve 20 to connect the positioning sleeve 20 and the output shaft 1203 in a synchronous motion.

The action of the set screw is to enhance the synchronous movement of the locating sleeve and output shaft.

Furthermore, after passing through the positioning sleeve 20 , the output shaft 1203 passes through the rolling bearing 18 and the retaining ring 17 in order, and 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 restrict the output shaft to move only circumferentially, not axially. The function of the rolling bearing is to enhance the smoothness of the circumferential motion of the output shaft.

Alternatively, after passing through the positioning sleeve 20, the output shaft 1203 passes through the rolling bearing 18 and the snap ring 17 in order, and the rolling bearing 18 is provided between the bearing outer ring 1801 and the bearing inner ring 1802, and the bearing inner ring is It is fixedly connected to the output shaft 1203 .

The effect of the fixed connection between the bearing inner ring and the output shaft 1203 is to act as a retaining ring.

Further, grooves parallel to the end surface of the sliding groove pillar 12 are provided at the V-shaped highest part of the first sliding groove 1201 and the V-shaped highest part of the second sliding groove 1202 respectively. The horizontal groove is a concave groove located against the end face of the slide post.

The function of the horizontal groove is to allow the door leaf to rest at will. The recessed groove allows the door leaf to rest corresponding to this angle and achieves 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 covered with sliding sleeves 10 .

The sliding sleeve allows the drive shaft to rotate more smoothly within the sliding groove, reducing wear and tear.

Furthermore, the first lid is the shaft sleeve 5 . The inner wall of the shaft sleeve 5 is provided with spline grooves. A first end 9001 extending into the inner cavity of the shaft sleeve 5 is provided with a splined shaft. The central shaft 9 and the shaft sleeve 5 form a matching structure for axial sliding connection and synchronous rotation. The central shaft 9 and the shaft sleeve 5 realize an axial sliding connection and synchronous rotation matching structure by matching the spline shaft and the spline groove.

Through the matching of the spline shaft and the spline groove, the synchronous rotation and axial sliding connection between the central shaft and the shaft sleeve can be realized more accurately, and the processing of the members is more convenient.

Example 3

See FIGS. 1-11.

Further, the internal cavity of the outer sleeve tube 6 between the inner end surface of the first lid portion and the inner end surface of the sliding groove post 12 is provided with a hydraulic pressure damping mechanism.

The use of a hydraulic damping mechanism can control the closing speed of the door leaf, reduce the closing noise of the door, and prevent the risk of injuring people due to the automatic closing speed being too fast.

Additionally, the hydraulic dampening mechanism includes a spring stop. The spring stop is the piston 8 .

Further, the method of assembling the return spring 7 is specifically as follows. When the return spring 7 is mounted on the shaft body of the central shaft 9 between the upper end surface of the piston 8 and the inner end surface of the first cover, the distance between the upper end surface of the piston 8 and the inner end surface of the first cover is The space is an oil storage chamber 24 , and the space between the lower end surface of the piston 8 and the inner end surface of the sliding groove post 12 is a pressure receiving oil chamber 23 .

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

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

The action of the retaining ring is also to reduce wear due to the relative motion between the return spring and the piston.

Further, a seal ring 21 is provided between the outer wall of the first lid portion and the inner wall of the outer sleeve tube 6, a seal ring 21 is provided between the outer wall of the piston 8 and the inner wall of the outer sleeve tube 6, and the second A seal ring 21 is provided between the inner wall of the seal lid 14 and the outer wall of the output shaft 1203 , and a seal ring 21 is provided between the outer wall of the second seal lid 14 and the inner wall of the outer sleeve tube 6 .

The use of a seal ring can prevent leakage of hydraulic fluid.

Furthermore, the piston 8 is a piston with a non-return valve.

Furthermore, a magnet 25 is provided at the bottom of the inner wall of the sliding groove post 12 .

The magnet can attract fine metal scraps generated by wear between members to keep the hydraulic fluid clean and the pivot moving smoothly. As shown in Figures 2 and 5, this assembly method is mainly applied when the two-way opening and closing door shaft is applied to the lower part of the door leaf.

Example 4

See FIGS. 1-11.

Further, the bi-directional opening/closing door shaft is further provided with a hydraulic oil flow rate control mechanism.

Because the flow of hydraulic fluid is controlled, the closing speed of the door can be more precisely regulated.

Furthermore, the specific structure of the hydraulic oil flow rate control mechanism is as follows. A hole 903 is provided in the shaft body along the axis of the central shaft 9 from the outer end surface of the first end portion 9001 . An oil return hole 904 is provided in the shaft body of the central shaft 9 . Oil return hole 904 communicates with hole passage 903 . A speed adjusting oil needle 4 is arranged from top to bottom in the hole. A first sealing lid 3 is screwed to the outward end of the first lid. A speed adjusting screw 2 is screwed into the center hole of the first seal lid 3 . A speed adjusting oil needle 4 is fitted to one end of the speed adjusting screw 2 . The other end of the speed adjusting screw 2 extends outside the upper end surface of the first sealing lid, and the adjusting ring 1 is fixed. A gap remains as an oil passage between the central shaft 9 and the inner hole of the first lid portion.

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

A specific structure of the hydraulic oil flow rate control mechanism may be as follows. A hole 903 is provided in the shaft body along the axis of the central shaft 9 from the outer end surface of the first end portion 9001 . An oil return hole 904 is provided in the shaft body of the central shaft 9 . Oil return hole 904 communicates with hole passage 903 . A speed adjusting oil needle 4 is arranged from top to bottom in the hole. A first sealing lid 3 is screwed to the outward end of the first lid. A speed adjusting screw 2 is screwed into the center hole of the first seal lid 3 . A speed adjusting oil needle 4 is fitted to one end of the speed adjusting screw 2 . The other end of the speed adjusting screw 2 extends outside the upper end surface of the first sealing lid, and the adjusting ring 1 is fixed. A through hole is provided as an oil passage between the upper end surface and the inner end surface of the first lid portion.

In the specific structures of the two hydraulic oil flow rate control mechanisms described above, the oil return hole 904 is located on the shaft of the central shaft 9 between the lower end surface of the piston 8 and the inner end surface of the sliding groove post 12 .

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

The actual function of the first lid is to close one end of the outer sleeve tube to prevent leakage of hydraulic fluid. The first lid part can be formed by combining the shaft sleeve 5 and the first sealing lid 3, or can be installed in other ways.

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

Furthermore, the speed adjusting oil needle 4 presents a diameter discrepancy.

Since the relevant parts of the speed control oil needle have different thicknesses, the depth of the speed control oil needle entering the hole can be adjusted from above to change the amount of hydraulic oil flowing in the hole. The user controls the closing speed of the door leaf as required. The speed adjusting oil needle is preferably tapered.

Further, a seal ring 21 is provided between the inner wall of the first seal lid 3 and the outer wall of the speed adjusting screw 2, and the seal ring 21 is provided between the outer wall of the first seal lid and the inner wall of the first lid portion. .

The use of a seal ring can prevent leakage of hydraulic fluid.

Further, the method of assembling the return spring 7 is specifically as follows. When the return spring 7 is mounted on the shaft body of the central shaft 9 between the upper end surface of the piston 8 and the inner end surface of the sliding groove post 12, the distance from the upper end surface of the piston 8 to the inner end surface of the sliding groove post 12 is The space between them is an oil storage chamber 24 , and the space between the lower end surface of the piston 8 and the inner end surface of the first lid portion is a pressure receiving oil chamber 23 .

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

Furthermore, a plane bearing 26 is provided between the upper end surface of the return spring 7 and the inner end surface of the sliding groove post 12 .

The action of the plain bearing is to reduce the wear between the sliding channel and the return spring, making the opening and closing of the door leaf smoother. As shown in FIGS. 1 and 4, this assembly method is mainly applied when the two-way opening and closing door shaft is applied to the upper part of the door leaf.

Further, a seal ring 21 is provided between the outer wall of the first lid portion and the inner wall of the outer sleeve tube 6, a seal ring 21 is provided between the outer wall of the piston 8 and the inner wall of the outer sleeve tube 6, and the second A seal ring 21 is provided between the inner wall of the seal lid 14 and the outer wall of the output shaft 1203 , and a seal ring 21 is provided between the outer wall of the second seal lid 14 and the inner wall of the outer sleeve tube 6 .

The use of a seal ring can prevent leakage of hydraulic fluid.

Furthermore, the piston 8 is a piston with a non-return valve.

Furthermore, a magnet 25 is provided on the inner end surface of the first lid.

The magnet can attract fine metal scraps generated by wear between members to keep the hydraulic fluid clean and the pivot moving smoothly.

Further, the bi-directional opening/closing door shaft is further provided with a hydraulic oil flow rate control mechanism.

Furthermore, the specific structure of the hydraulic oil flow rate control mechanism is as follows. A hole 903 is provided in the shaft body along the axis of the central shaft 9 from the outer end surface of the first end portion 9001 . An oil return hole 904 is provided in the shaft body of the central shaft 9 . Oil return hole 904 communicates with hole passage 903 . The speed adjusting oil needle 4 is arranged in the hole 903 from bottom to top. A first sealing lid 3 is screwed to the outward end of the first lid. A speed adjusting screw 2 is screwed into the center hole of the first seal lid 3 . A speed adjusting oil needle 4 is fitted to one end of the speed adjusting screw 2 . The other end of the speed adjusting screw 2 extends outside the upper end surface of the first sealing lid, and the adjusting ring 1 is fixed. A gap remains as an oil passage between the central shaft 9 and the inner hole of the first lid portion.

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

A specific structure of the hydraulic oil flow rate control mechanism may be as follows. A specific structure of the hydraulic oil flow rate control mechanism is as follows. A hole 903 is provided in the shaft body along the axis of the central shaft 9 from the outer end surface of the first end portion 9001 . An oil return hole 904 is provided in the shaft body of the central shaft 9 . Oil return hole 904 communicates with hole passage 903 . The speed adjusting oil needle 4 is arranged in the hole 903 from bottom to top. A first sealing lid 3 is screwed to the outward end of the first lid. A speed adjusting screw 2 is screwed into the center hole of the first seal lid 3 . A speed adjusting oil needle 4 is fitted to one end of the speed adjusting screw 2 . The other end of the speed adjusting screw 2 extends outside the upper end surface of the first sealing lid, and the adjusting ring 1 is fixed. A through hole is provided as an oil passage between the upper end surface and the inner end surface of the first lid portion.

In the specific structures of the two hydraulic oil flow rate control mechanisms described above, the oil return hole 904 is located on the shaft of the central shaft 9 between the upper end surface of the piston 8 and the inner end surface of the sliding groove post 12 .

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

Furthermore, the speed adjusting oil needle 4 presents a diameter discrepancy.

Since the relevant parts of the speed control oil needle have different thicknesses, the depth of the speed control oil needle entering the hole can be adjusted from above to change the amount of hydraulic oil flowing in the hole. The user controls the closing speed of the door leaf as required. The speed adjusting oil needle is preferably tapered.

Further, a seal ring 21 is provided between the inner wall of the first seal lid 3 and the outer wall of the speed adjusting screw 2, and the seal ring 21 is provided between the outer wall of the first seal lid and the inner wall of the first lid portion. .

The use of a seal ring can prevent leakage of hydraulic oil.

A better usage scenario for embodiments of the present invention is provided below.

When this two-way opening and closing door shaft is fitted on the top of the door leaf, the door shaft is fixed to the door leaf by the flange mounting hole 601 of the outer sleeve tube 6, and the output shaft 1203 is connected to the door frame by components. In the actual use process, when the user opens and closes the door leaf, it is equivalent to rotating the output shaft 1203 by an external force to rotate the entire sliding groove post 12 . The central shaft 9 and the shaft sleeve 5 are synchronously and axially slidably matched and connected, and the shaft sleeve 5, the outer sleeve tube 6 and the second seal lid 14 are fixedly connected, so that the sliding groove pillar 12 can rotate. Then, the first sliding groove 1201 and the second sliding groove 1202 are rotated and displaced so that the first driving shaft 901 is moved in the first sliding groove 1201 and the second driving shaft 902 is moved in the first sliding groove 1201. , causing the central shaft 9 to move only axially, as in the left-to-right transition in FIG. When the first driving shaft 901 and the second driving shaft 902 are at the lowest part of the V shape of the first sliding groove and the second sliding groove, the first driving shaft 901 and the second driving shaft 902 rotate to the left. The center shaft 9 can also be moved upward in the axial direction by rotating to the right. The piston also moves accordingly, pushing the return spring 7 and accumulating energy. Hydraulic oil in the oil storage chamber 24 flows through the check valve 22 to the pressure receiving oil chamber 23 . When the first drive shaft 901 and the second drive shaft 902 are in the grooves parallel to the horizontal end surfaces at the highest parts of the V-shaped grooves of the first and second slide grooves, the center shaft 9 is axially displaced. However, when the sliding sleeve 10 reaches the recessed groove, it is engaged and positioned by the pressure of the return spring 7, the circumferential movement of the central shaft is restricted and stays at a fixed angle, and the return spring 7 is in an energy storage state. It is in. As the output shaft 1203 rotates, the positioning sleeve 20 rotates accordingly. The positioning ball 15 is released from the positioning hole 1401 and slides along the circumference of the hollow step surface of the second seal lid 14 . In the course of the positioning ball 19 leaving the positioning hole 1401, the positioning ball 19 moves upward to compress the positioning spring 16 and accumulate energy. When the output shaft 1203 rotates left or right by 90 degrees, the positioning spring 16 releases energy and pushes the lower sphere of the positioning ball 19 into the positioning hole 1401 to achieve 90 degrees reinforced positioning.

When the two-way open/close door shaft is in the open position, that is, the first driving shaft 901 and the second driving shaft 902 are grooves parallel to the horizontal end surfaces of the V-shaped highest parts of the first sliding groove and the second sliding groove. If so, rotate the output shaft 1203 in a direction opposite to the original opening direction to rotate the slide post 12 and the positioning sleeve 20 as a whole. When the drive shaft 11 slides into the inclined portion of the V-shaped slide groove, the return spring 7 releases energy to drive the piston 8 and the central shaft 9 to move axially downward, the second drive. The shaft 902 and the first drive shaft 901 also move downwards and slide through the slope of the V-shaped slide groove to the lowest part of the V-shaped vat bottom. Thereby, the slide post 12 and the positioning sleeve 20 are rotated and reset as a whole to achieve automatic closing. During this rotation process, the lower sphere of the positioning ball 15 disengages from the positioning hole 1401 to release the 90 degree engagement and positioning, pushing the positioning spring 16 to store energy. During the intermediate process, the positioning ball 15 slides along the circumference of the hollow step surface of the second sealing lid 14 . The positioning spring 16 then releases energy to force 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 check valve of the piston is closed, and the hydraulic oil in the pressure receiving oil chamber 230 is pushed and flows into the oil storage chamber 24 through the oil return passage arranged on the central shaft 9 . The oil in the pressure-receiving oil chamber 23 flows into the hole passage 903 of the central shaft through the gap between the outer column body of the first end portion 9001 of the central shaft and the first lid portion, for example, the shaft sleeve 5. can flow to the oil storage chamber 24 through the oil return hole 904 of . The user can control the circulating speed of the hydraulic oil to achieve buffering and closing, turn the speed adjusting screw 2 with the adjusting wheel 1, and insert the speed adjusting oil needle 4 of the tapered needle bar into the hole of the central shaft 9. , and the gap between the speed adjusting oil needle 4 and the hole 903 can be changed to control the magnitude of the hydraulic oil flow rate and realize the adjustability of the closing speed.

When the two-way opening and closing door shaft is fitted to the bottom of the door leaf, the door shaft is fixed to the door leaf by the flange mounting hole 601 of the outer sleeve tube 6, and the output shaft 1203 is connected to the ground or the bottom of the door frame by a component. be done. In the actual use process, when the user opens and closes the door leaf, it is equivalent to rotating the output shaft 1203 by an external force to rotate the entire sliding groove post 12 . The central shaft 9 and the shaft sleeve 5 are synchronously and axially slidably matched and connected, and the shaft sleeve 5, the outer sleeve tube 6 and the second seal lid 14 are fixedly connected, so that the sliding groove pillar 12 can rotate. Then, the first sliding groove 1201 and the second sliding groove 1202 are rotated and displaced so that the first driving shaft 901 is moved in the first sliding groove 1201 and the second driving shaft 902 is moved in the first sliding groove 1201. to displace upward, causing the central shaft 9 to move only in the axial direction, like the change from right to left in FIG. When the first driving shaft 901 and the second driving shaft 902 are at the lowest part of the V shape of the first sliding groove and the second sliding groove, the first driving shaft 901 and the second driving shaft 902 rotate to the left. The center shaft 9 can also be moved upward in the axial direction by rotating to the right. The piston also moves accordingly, pushing the return spring 7 and accumulating energy. Hydraulic oil in the oil storage chamber 24 flows through the check valve 22 to the pressure receiving oil chamber 23 . When the first drive shaft 901 and the second drive shaft 902 are in the trough parallel to the horizontal end surfaces at the highest points of the V-shaped grooves of the first and second slide grooves, the central shaft 9 is axially displaced. However, when the sliding sleeve 10 reaches the recessed groove, it is engaged and positioned by the pressure of the return spring 7, the circumferential movement of the central shaft is restricted and stays at a fixed angle, and the return spring 7 is in an energy storage state. It is in. As the output shaft 1203 rotates, the positioning sleeve 20 rotates accordingly. The positioning ball 15 is released from the positioning hole 1401 and slides along the circumference of the hollow step surface of the second seal lid 14 . In the course of the positioning ball 19 leaving the positioning hole 1401, the positioning ball 19 moves downward to compress the positioning spring 16 and accumulate energy. When the output shaft 1203 rotates left or right by 90 degrees, the positioning spring 16 releases energy and pushes the upper sphere of the positioning ball 19 into the positioning hole 1401 to achieve 90 degrees stiffening positioning.

When the two-way open/close door shaft is in the open position, that is, the first driving shaft 901 and the second driving shaft 902 are grooves parallel to the horizontal end surfaces of the V-shaped highest parts of the first sliding groove and the second sliding groove. If so, rotate the output shaft 1203 in a direction opposite to the original opening direction to rotate the slide post 12 and the positioning sleeve 20 as a whole. When the drive shaft 11 slides into the inclined portion of the V-shaped slide groove, the return spring 7 releases energy to drive the piston 8 and the central shaft 9 to move axially downward, the second drive. The shaft 902 and the first drive shaft 901 also move downwards and slide through the slope of the V-shaped slide groove to the lowest part of the V-shaped groove bottom. Thereby, the slide post 12 and the positioning sleeve 20 are rotated and reset as a whole to achieve automatic closing. During this rotation process, the upper sphere of the positioning ball 15 disengages from the positioning hole 1401 to release the 90 degree engagement and positioning, pushing the positioning spring 16 to store energy. During the intermediate process, the positioning ball 15 slides along the circumference of the hollow step surface of the second sealing lid 14 . After that, the positioning spring 16 releases energy to push the upper sphere of the positioning ball 15 into the positioning hole 1401 to achieve 0 degree positioning. When the piston 8 moves downward, the check valve 22 of the piston is closed, and the working oil in the pressure receiving oil chamber 230 is pushed and flows into the oil storage chamber 24 through the oil return passage arranged on the central shaft 9 . The oil in the pressure receiving oil chamber 23 can flow through the oil return hole 904 to the hole passage 903 of the central shaft, and then to the oil storage chamber 24 through the gap between the central shaft and the first lid or shaft sleeve. The user can control the circulating speed of the hydraulic oil to achieve buffering and closing, turn the speed adjusting screw 2 with the adjusting wheel 1, and insert the speed adjusting oil needle 4 of the tapered needle bar into the hole of the central shaft 9. , and the gap between the speed adjusting oil needle 4 and the hole 903 can be changed to control the magnitude of the hydraulic oil flow rate and realize the adjustability of the closing speed.

The bi-directional opening and closing door shafts provided by the embodiments of the present invention have been described in detail above. Specific examples have been used herein to discuss the principles and embodiments of the present invention. The above description of the embodiments is only used to aid in understanding the spirit of the invention. At the same time, those skilled in the art can make any changes in the specific embodiments and scope of application based on the spirit of the present invention. In summary, it should be understood that the content of this specification is not intended to limit the invention.

1, adjusting wheel; 2, speed adjusting screw; 3, first sealing lid; 4, speed adjusting oil needle, 5, shaft sleeve; 6, outer sleeve tube; 601, flange mounting hole; 9, central shaft; 9001, first end; 9002, second end; 10, sliding sleeve; 901, first drive shaft; 902, second drive shaft; 12, sliding groove post; 1201, first sliding groove; 1202, second sliding groove; 1203, output shaft; 13, steel ball; 16, positioning spring; 17, retaining ring; 18, rolling bearing; 1801, bearing outer ring; 1802, bearing inner ring: 19, set screw; 20, positioning sleeve; Valve; 23, pressure receiving oil chamber; 24, oil storage chamber; 25, magnet; 26, plane bearing.

Claims (33)

A two-way opening and closing door shaft,
comprising an outer sleeve tube (6), a first lid, a second lid, an output shaft (1203), a sliding channel post (12), a central shaft (9), a return spring (7), and a spring stop;
A flange is provided at one end of the outer sleeve tube (6), the flange is provided with a flange mounting hole (601),
said second lid is placed in a tube cavity near said flange attachment hole (601) in said outer sleeve tube (6);
said first lid is placed in a tube cavity at the other end of said outer sleeve tube (6);
said outer sleeve tube (6) is fixedly connected to said first lid and said second lid;
A first end (9001) of said central shaft (9) extends into an internal cavity of said first lid, said central shaft (9) and said first lid being in an axial sliding connection. and forming a synchronous rotation matching structure,
a second end (9002) of said central shaft (9) extends into an internal cavity of said sliding channel post (12);
The second end (9002) is provided with a first drive shaft (901) and a second drive shaft (902) that face each other and are displaced vertically,
The sliding groove pillar is provided with a first sliding groove (1201) and a second sliding groove (1202) which are arranged facing each other with a vertical shift,
Both the first sliding groove (1201) and the second sliding groove (1202) are V-shaped,
The first drive shaft (901) extends into the first slide groove (1201), the second drive shaft (902) extends into the second slide groove (1202), the output shaft (1203) extends from the bottom of the sliding groove post (12), the output shaft (1203) extends from the internal cavity of the second lid,
the output shaft (1203) and the sliding channel post (12) are movably connected to the second lid;
said output shaft (1203) and said slide post (12) move only circumferentially within the tube cavity of said outer sleeve tube (6),
The spring stop part is fixedly fitted to the middle part of the central shaft (9), and the assembly method of the return spring (7) consists of the upper end surface of the spring stop part and the shaft above the spring stop part. The return spring (7) is mounted on the shaft body of the central shaft (9) between the inner end surface of a member that does not move in the direction,
Said output shaft (1203) and said sliding channel post (12) move circumferentially in the tube cavity of said outer sleeve tube (6), and said first drive shaft (901) moves in said first sliding channel. (1201) to slide from the lowest part of the V-shape to the highest part of the V-shape, and the second drive shaft (902) slides in the second sliding groove (1202) to V A bi-directional opening and closing door shaft, characterized in that, when sliding from the lowest part of the V-shape to the highest part of the V-shape, the spring detent moves axially to compress the return spring (7). the inner cavity of said outer sleeve tube (6) is further fitted with a reinforcing positioning mechanism, said second lid portion being a second sealing lid (14);
said enhanced positioning mechanism comprises a second sealing lid (14), a positioning sleeve (20), a positioning ball (15) and a positioning spring (16);
The second sealing lid (14) has an annular shape with both ends recessed inward and a hollow stepped surface in the middle, and the hollow stepped surface is provided with a plurality of positioning holes (1401),
the positioning sleeve (20) has a circular ring shape and is fixedly mounted on the intermediate portion of the output shaft (1203);
Through holes (2001) are provided at positions corresponding to the positioning holes (1401) in the positioning sleeve (20),
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),
The two-way open/close door shaft according to claim 1, characterized in that said output shaft (1203) passes through said second sealing lid (14) and said positioning sleeve (20). Between the outer end surface of the sliding channel post (12) facing the output shaft (1203) and the inner end surface of the second seal lid (14) facing the sliding channel post (12), a plurality of steel 3. A bidirectional opening and closing door shaft according to claim 2, characterized in that a ball (13) is provided. A set screw (19) is provided at a position perpendicular to the axis of the positioning sleeve (20) for synchronously connecting the movement of the positioning sleeve (20) and the output shaft (1203). The two-way open/close door shaft according to claim 2. After passing through the positioning sleeve (20), the output shaft (1203) passes through the rolling bearing 18 and the retaining ring 17 in order, and the rolling bearing 18 is provided between the bearing outer ring 1801 and the bearing inner ring 1802. The two-way open/close door shaft according to claim 2, characterized in that: After passing through the positioning sleeve (20), the output shaft (1203) passes through the rolling bearing 18 and the retaining ring 17 in order, and the rolling bearing 18 is provided between the bearing outer ring 1801 and the bearing inner ring 1802, The fixed connection to the two-way opening and closing door shaft according to claim 2, characterized in that the bearing inner ring is fixedly connected to the output shaft (1203). Horizontal grooves parallel to the end face of the sliding groove pillar (12) are provided in the V-shaped highest part of the first sliding groove (1201) and the V-shaped highest part of the second sliding groove (1202), respectively. 3. The two-way open/close door shaft of claim 2, wherein a groove is provided and said horizontal groove includes a concave groove disposed against an end face of said slide post. 8. The shaft bodies of the first drive shaft (901) and the second drive shaft (902) are each fitted with a sliding sleeve (10), according to any one of claims 2 to 7. Two-way opening and closing door shaft described in . Said first lid part is an axle sleeve (5), the inner wall of said axle sleeve (5) is provided with spline grooves, said first end (5) extending into the inner cavity of said axle sleeve (5) 9001) is provided with a splined shaft, said central shaft (9) and said shaft sleeve (5) form a matching structure for axial sliding connection and synchronous rotation, said central shaft (9) and said Both sides according to any one of claims 2 to 7, characterized in that the shaft sleeve (5) realizes an axial sliding connection and synchronous rotation by matching the spline shaft and the spline groove. directional opening and closing door shaft. The inner cavity of the outer sleeve tube (6) between the inner end surface of the first lid portion and the inner end surface of the sliding groove post (12) is provided with a hydraulic pressure damping mechanism. Item 8. The bi-directional opening/closing door shaft according to any one of items 2 to 7. 11. A two-way open/close door shaft according to claim 10, characterized in that said hydraulic damping mechanism comprises said spring stop, said spring stop being a piston (8). Specifically, the method of assembling the return spring (7) is as follows. When the return spring (7) is mounted on the shaft, the space between the upper end surface of the piston (8) and the inner end surface of the first lid portion is an oil storage chamber (24). ) to the inner end surface of the sliding groove pillar (12) is a pressure receiving oil chamber (23). 13. The bidirectional opening/closing door shaft according to claim 12, wherein a snap ring (17) is provided between the return spring (7) and the upper end surface of the piston (8). A seal ring (21) is provided between the outer wall of the first lid portion and the inner wall of the outer sleeve tube (6), and the seal ring (21) is provided between the outer wall of the piston (8) and the inner wall of the outer sleeve tube (6). A seal ring (21) is provided between them, and a seal ring (21) is provided between the inner wall of the second seal lid (14) and the outer wall of the output shaft (1203). 14. The bi-directional opening and closing door shaft according to claim 13, characterized in that a sealing ring (21) is provided between the outer wall of (14) and the inner wall of said outer sleeve tube (6). 15. A two-way open/close door shaft according to any one of claims 12, 13, 14, characterized in that said piston (8) is a piston with a non-return valve (22). The bi-directional 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 said slide pillar (12). The bi-directional door shaft according to any one of claims 12, 13 and 14, wherein the bi-directional door shaft is further provided with a hydraulic oil flow rate control mechanism. The specific structure of the hydraulic oil flow rate control mechanism is as follows. ) is provided, and an oil return hole (904) is provided in the shaft body of the central shaft (9), the oil return hole (904) communicates with the hole passage (903), and speed adjustment is performed in the hole passage. An oil needle (4) is arranged from top to bottom, a first sealing lid (3) is screwed to the outward end of the first lid, and a center hole of the first sealing lid (3) is screwed. A speed adjusting screw (2) is screwed to the speed adjusting screw (2), the speed adjusting oil needle (4) is fitted to one end of the speed adjusting screw (2), and the other end of the speed adjusting screw (2) is connected to the second 1. The adjustment ring (1) extends outside the upper end surface of the seal lid, and the adjustment ring (1) is fixed, and a gap remains as an oil passage between the central shaft (9) and the inner hole of the first lid portion. 18. The bi-directional opening and closing door shaft according to claim 17, characterized in that: The specific structure of the hydraulic oil flow rate control mechanism is as follows. ) is provided, and an oil return hole (904) is provided in the shaft body of the central shaft (9), the oil return hole (904) communicates with the hole passage (903), and speed adjustment is performed in the hole passage. An oil needle (4) is arranged from top to bottom, a first sealing lid (3) is screwed to the outward end of the first lid, and a center hole of the first sealing lid (3) is screwed. A speed adjusting screw (2) is screwed to the speed adjusting screw (2), the speed adjusting oil needle (4) is fitted to one end of the speed adjusting screw (2), and the other end of the speed adjusting screw (2) is connected to the second 1 extending outside the upper end surface of the seal lid, an adjustment ring (1) is fixed, and a through hole is provided as an oil passage between the upper end surface and the inner end surface of the first lid portion. 18. The bi-directional opening and closing door shaft of claim 17. The oil return hole (904) is located in the shaft body of the central shaft (9) between the lower end surface of the piston (8) and the inner end surface of the sliding groove post (12),
Alternatively, the oil return hole (904) is arranged along the axis of the central shaft (9) at the outer end surface of the second end (9002) so as to communicate with the hole passage (903). 20. The bi-directional opening/closing door shaft according to claim 18 or 19, characterized in that: 20. Bi-directional opening and closing door shaft according to claim 18 or 19, characterized in that the speed adjusting oil needle (4) presents a diameter mismatch. A seal ring (21) is provided between the inner wall of the first seal lid (3) and the outer wall of the speed adjusting screw (2), and the outer wall of the first seal lid (3) and the inner wall of the first lid portion are provided. 20. Bi-directional opening and closing door shaft according to claim 18 or 19, characterized in that a sealing ring (21) is provided between them. Specifically, the method of assembling the return spring (7) is as follows. 9) When the return spring (7) is mounted on the shaft body (9), the space between the upper end surface of the piston (8) and the inner end surface of the sliding groove post (12) is an oil storage chamber (24). and a space between the lower end surface of the piston (8) and the inner end surface of the first lid portion is a pressure receiving oil chamber (23). shaft. The two-way open/close door shaft according to claim 23, characterized in that a plane bearing (26) is provided between the upper end surface of the return spring (7) and the inner end surface of the sliding groove post (12). . A seal ring (21) is provided between the outer wall of the first lid portion and the inner wall of the outer sleeve tube (6), and the seal ring (21) is provided between the outer wall of the piston (8) and the inner wall of the outer sleeve tube (6). A seal ring (21) is provided between them, and a seal ring (21) is provided between the inner wall of the second seal lid (14) and the outer wall of the output shaft (1203). 26. The bi-directional opening and closing door shaft according to claim 25, characterized in that a sealing ring (21) is provided between the outer wall of (14) and the inner wall of said outer sleeve tube (6). 26. A two-way open/close door shaft according to any one of claims 23, 24, 25, characterized in that said piston (8) is a piston with a non-return valve (22). The two-way open/close door shaft according to any one of claims 23, 24 and 25, wherein a magnet (25) is provided on the inner end surface of the first cover. 26. The bi-directional door shaft according to any one of claims 23, 24 and 25, wherein the bi-directional door shaft is further provided with a hydraulic oil flow rate control mechanism. The specific structure of the hydraulic oil flow rate control mechanism is as follows. ) is provided, an oil return hole (904) is provided in the shaft body of the central shaft (9), the oil return hole (904) communicates with the hole passage (903), and the inside of the hole passage (903) , the speed adjusting oil needle (4) is arranged from the bottom to the top, the first sealing lid (3) is screwed to the outward end of the first lid portion, and the first sealing lid (3) A speed adjusting screw (2) is screwed into the center through hole, the speed adjusting oil needle (4) is fitted to one end of the speed adjusting screw (2), and the other end of the speed adjusting screw (2). extends outside the upper end surface of the first seal lid, the adjusting ring (1) is fixed, and a gap remains as an oil passage between the central shaft (9) and the inner hole of the first lid portion. 29. The bi-directional door shaft of claim 28, wherein the two-way door shaft comprises: The specific structure of the hydraulic oil flow rate control mechanism is as follows. ) is provided, and an oil return hole (904) is provided in the shaft body of the central shaft (9), the oil return hole (904) communicates with the hole passage (903), and the inside of the hole passage (903) The speed adjusting oil needle (4) is arranged from the bottom to the top, and the first sealing lid (3) is screwed to the outward end of the first lid portion, and the first sealing lid (3) A speed adjusting screw (2) is screwed into the center through hole, the speed adjusting oil needle (4) is fitted to one end of the speed adjusting screw (2), and the other end of the speed adjusting screw (2). extends outside the upper end face of the first seal lid, the adjustment ring (1) is fixed, and a through hole is provided as an oil passage between the upper end face and the inner end face of the first lid part. 29. The bi-directional door shaft of claim 28, wherein: The oil return hole (904) is located in the shaft body of the central axis (9) between the upper end surface of the piston (8) and the inner end surface of the sliding groove post (12), or A hole (904) is arranged along the axis of the central shaft (9) at the outer end surface of the second end (9002) so as to communicate with the hole passage (903). 31. A two-way opening and closing door shaft according to claim 29 or 30. 31. Bi-directional opening and closing door shaft according to claim 29 or 30, characterized in that the speed adjusting oil needle (4) presents a diameter mismatch. A seal ring (21) is provided between the inner wall of the first seal lid (3) and the outer wall of the speed adjusting screw (2), and the outer wall of the first seal lid (3) and the inner wall of the first lid portion are provided. 31. A two-way open/close door shaft according to claim 29 or 30, characterized in that a sealing ring (21) is provided between them.

Images