Door spindle that can be opened and closed in two directions

Abstract

Door spindle which can be opened and closed in two directions, characterized in that it has an outer sleeve (6), a first cover part, a second cover part, an output shaft (1203), a slide column (12), a central shaft (9), a return spring (7) and a spring locking part, wherein one end of the outer sleeve (6) is provided with a flange on which a flange installation hole (601) is provided, and wherein the second cover part is arranged in a tubular cavity of the outer sleeve (6) located close to the flange installation hole (601), and wherein the first cover part is arranged in a tubular cavity at the other end of the outer sleeve (6), and wherein the outer sleeve (6) is firmly connected to the first cover part and the second cover part, and wherein a first end section (9001) of the central shaft (9) projects into the inner cavity of the first cover part, and wherein the central shaft (9) and the first cover part form a fitting structure which is axially displaceable and rotates synchronously, and wherein a second end section (9002) of the central shaft (9) projects into the inner cavity of the slide column (12), and wherein the second end section (9002) is provided with a first drive shaft (901) and a second drive shaft (902) which are arranged opposite each other, offset upwards and downwards, wherein the slide column is provided with a first slide (1201) and a second slide (1202) which are arranged opposite each other, offset upwards and downwards, and wherein the first slide (1201) and the second slide (1202) are each V-shaped, and wherein the first drive shaft (901) extends into the first slide (1201) and the second drive shaft (902) extends into the second slide (1202), and wherein the output shaft (1203) protrudes from the cylinder base of the slide column (12), and wherein the output shaft (1203) protrudes from the inner cavity of the second cover part, and wherein the output shaft (1203) and the slide column (12) are movably connected to the second cover part, and wherein the output shaft (1203) and the slide column (12) move only in the circumferential direction in the tubular cavity of the outer sleeve (6), and wherein the spring locking element is firmly embedded in the central section of the central shaft (9), and wherein the assembly method of the return spring (7) consists of placing the return spring (7) on the shaft body of the central shaft (9) between the upper end face of the spring locking element and the inner end face of a non-axially moving component located above the spring locking element; and wherein the spring locking part moves axially and compresses the return spring (7) when the output shaft (1203) and the slide column (12) move circumferentially in the tubular cavity of the outer sleeve (6) and the first drive shaft (901) slides in the first slide (1201) and slides from the lowest position of the V-shape to the highest position of the V-shape and the second drive shaft (902) slides in the second slide (1202) and slides from the lowest position of the V-shape to the highest position of the V-shape.

Description

TECHNICAL AREA

[0001] The present invention relates to the field of door and window fittings, in particular a door spindle. STATE OF THE ART

[0002] There are currently numerous product types on the market for doors with automatic soft-close mechanisms, and the two-way opening door spindle product is mainly based on a floor spring. However, when the floor spring is installed, it is extremely cumbersome to dig pits in the floor for concealed installation and construction, and it is more complicated to destroy the floor slab to dig a pit.The biggest disadvantage is the potential safety risk if a floor plate is penetrated. Furthermore, there is a large gap between the center of the floor spring's output shaft and the door frame, resulting in a significant gap between the door leaf and the frame after the door is opened. Children's hands can easily reach into this gap, and when the door closes automatically, hands can easily be caught and injured. Another product is the door spindle with automatic closing. During opening and closing, the gap between the door leaf and the frame remains unchanged, which is relatively safe. However, the door can only open in one direction, making it unsuitable for public spaces. Additionally, there is a door spindle that can open and close in both directions.Since there is no positioning function, the door leaf tends to inflate slightly during use. These various reasons result in extremely inconvenient use for the user.

[0003] US 2020 / 263471 A discloses a pivot hinge device for a door. US 2010 / 0319260 A discloses a hinge for automatically closing a door that opens in both directions, with a shock-absorbing function. CONTENT OF THE PRESENT INVENTION

[0004] The embodiment of the present invention provides a door spindle that can be opened and closed in two directions. Using the technical solution of this embodiment, a door spindle installed within the door leaf is employed, allowing it to be opened and closed in two directions. During the opening and closing of the door leaf, the gap between the door leaf and the door frame remains essentially unchanged, preventing a child's hand from protruding into the gap and becoming trapped and injured. Furthermore, due to the enhanced positioning function, the opening and closing angle of the door leaf becomes more precise, thus meeting the requirements for safety and aesthetics in modern social life.

[0005] To achieve this purpose, the embodiment of the present invention employs the following technical solution: the present invention provides a door spindle that can be opened and closed in two directions, comprising an outer sleeve, a first cover part, a second cover part, an output shaft, a slide column, a central shaft, a return spring, and a spring locking element, wherein one end of the outer sleeve is provided with a flange on which a flange installation hole is provided, and wherein the second cover part is arranged in a tubular cavity of the outer sleeve located close to the flange installation hole, and wherein the first cover part is arranged in a tubular cavity at the other end of the outer sleeve, and wherein the outer sleeve is rigidly connected to the first cover part and the second cover part, and wherein a first end section of the central shaft projects into the inner cavity of the first cover part.and wherein the central shaft and the first cover part form a fitting structure which is axially displaceable and rotates synchronously, and wherein a second end section of the central shaft projects into the inner cavity of the slide column, and wherein the second end section is provided with a first drive shaft and a second drive shaft which are arranged opposite each other, offset upwards and downwards, and wherein the slide column is provided with a first slide and a second slide which are arranged opposite each other, offset upwards and downwards, and wherein the first slide and the second slide are each V-shaped, and wherein the first drive shaft projects into the first slide and the second drive shaft projects into the second slide, and wherein the output shaft projects out from the cylindrical base of the slide column, and wherein the output shaft projects out of the inner cavity of the second cover part,and wherein the output shaft and the slide column are movably connected to the second cover part, and wherein the output shaft and the slide column move only circumferentially in the tubular cavity of the outer sleeve, and wherein the spring locking element is firmly embedded in the central section of the central shaft, and wherein the mounting method of the return spring consists of placing the return spring on the shaft body of the central shaft between the upper end face of the spring locking element and the inner end face of a non-axially moving component located above the spring locking element; and wherein the spring locking element moves axially and compresses the return spring,when the output shaft and the slide column move circumferentially in the tube cavity of the outer sleeve, and the first drive shaft slides in the first slide and slides from the lowest position of the V-shape to the highest position of the V-shape, and the second drive shaft slides in the second slide and slides from the lowest position of the V-shape to the highest position of the V-shape.

[0006] Furthermore, a reinforced positioning mechanism is installed in the inner cavity of the outer sleeve, wherein the second cover part is a second closure cover, and wherein the reinforced positioning mechanism comprises a second closure cover, a positioning sleeve, a positioning ball, and a positioning spring, and wherein the second closure cover as a whole is formed in an annular shape, the two ends of which are recessed inwards and the central section is provided with a hollow stepped surface, and wherein several positioning holes are provided on the hollow stepped surface, and wherein the positioning sleeve as a whole is formed in an annular shape and is firmly attached to the central section of the output shaft, and wherein a through-hole is provided at each of the positions of the positioning sleeve corresponding to the positioning hole, in which the positioning ball and the positioning spring are arranged vertically.and wherein the positioning ball can be inserted into the positioning hole by the positioning spring, and wherein the output shaft penetrates the second closure cover and the positioning sleeve. Furthermore, several steel balls are arranged between an outer end face of the slide column facing the output shaft and an inner end face of the second closure cover facing the slide column.

[0007] Furthermore, an adjusting screw is arranged at a position of the positioning sleeve that is perpendicular to the axis, for the synchronous connection of the positioning sleeve and the movement of the output shaft.

[0008] Furthermore, after passing through the positioning sleeve, the output shaft must sequentially pass through an outer bearing ring, an inner bearing ring, and a retaining ring, with a rolling bearing arranged between the outer and inner bearing rings. The inner bearing ring must be rigidly connected to the output shaft.

[0009] Furthermore, the highest position of the V-shape of the first slide and the highest position of the V-shape of the second slide are each provided with a horizontal groove section that is aligned parallel to the end face of the slide column, wherein the horizontal groove section includes a concave groove section that is arranged opposite the end face of the slide column.

[0010] Furthermore, a sliding sleeve is attached to the shaft body of both the first and second drive shafts.

[0011] Furthermore, the first cover part is a shaft bushing, wherein a keyway is provided on the inner wall of the shaft bushing, and wherein a first end section projecting into the inner cavity of the shaft bushing is provided with a splined shaft, and wherein the central shaft and the shaft bushing form a fitting structure which is axially displaceable and rotates synchronously, and wherein the central shaft and the shaft bushing achieve an axially displaceable connection and synchronous rotation through a fit between the splined shaft and the keyway.

[0012] Furthermore, a hydraulic buffer mechanism is arranged in the inner cavity of the outer sleeve between the inner end surface of the first cover part and the inner end surface of the slide column.

[0013] Furthermore, the hydraulic buffer mechanism includes a spring-loaded locking element, which is a piston. The space between the upper end face of the piston and the inner end face of the first cover part is also an oil storage chamber, and the space between the lower end face of the piston and the inner end face of the slide column is a pressure oil chamber, provided that the mounting method of the return spring consists in particular of the return spring being mounted on the shaft body of the central shaft between the upper end face of the piston and the inner end face of the first cover part.

[0014] Furthermore, a retaining ring is arranged between the return spring and the upper end face of the piston.

[0015] Furthermore, 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 between the outer wall of the piston and the inner wall of the outer sleeve, a sealing ring between the inner wall of the second closure cover and the outer wall of the output shaft, and a sealing ring 21 between the outer wall of the second closure cover and the inner wall of the outer sleeve.

[0016] Furthermore, the piston is a piston with a one-way valve.

[0017] Furthermore, a magnet is arranged on the bottom of the inner wall of the slide column.

[0018] Furthermore, the door spindle, which can be opened and closed in two directions, is also equipped with a hydraulic oil flow control mechanism.

[0019] Furthermore, the specific structure of the hydraulic oil flow control mechanism consists in that a hole channel is arranged on the shaft body of the central shaft from the outer end face of the first end section along the axis of the central shaft, wherein an oil return hole is provided on the shaft body of the central shaft which is connected to the hole channel, and wherein a speed-setting oil needle is placed in the hole channel from top to bottom, and wherein a first end cap is screwed onto an outwardly facing end section of the first end cap, and wherein a speed-setting screw is screwed onto the middle through-hole of the first end cap, and wherein the speed-setting oil needle is embedded in one end of the speed-setting screw.and wherein the other end of the speed adjusting screw extends to the outside of the upper end face of the first cover and an adjusting wheel is fixedly installed at this end, and wherein a gap is provided between the central shaft and the inner hole of the first cover part, which is used as an oil passage.

[0020] Furthermore, the specific structure of the hydraulic oil flow control mechanism can further consist of a perforated channel being arranged on the shaft body from the outer end face of the first end section along the axis of the central shaft, wherein an oil return hole is provided on the shaft body of the central shaft which is connected to the perforated channel, and wherein a speed-setting oil needle is placed in the perforated channel from top to bottom, and wherein a first end cap is screwed onto an outwardly facing end section of the first end cap, and wherein a speed-setting screw is screwed onto the central through-hole of the first end cap, and wherein the speed-setting oil needle is embedded in one end of the speed-setting screw.and wherein the other end of the speed adjusting screw extends to the outside of the upper end face of the first cover and an adjusting wheel is fixedly installed at this end, and wherein a through-hole is provided between the upper end face and the inner end face of the first cover part, which is used as an oil passage.

[0021] In the two specific structures of the hydraulic oil flow control mechanism described above, 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 slide column, or The oil return hole is positioned on the outer end face of the second end section along the axis of the central shaft in such a way that it is in contact with the hole channel.

[0022] Furthermore, the speed-adjustment oil needle has a variable diameter. Additionally, a sealing ring is arranged between the inner wall of the first sealing cap and the outer wall of the speed-adjustment screw, and another sealing ring is arranged between the outer wall of the first sealing cap and the inner wall of the first cover part. Furthermore, the space between the upper end face of the piston and the inner end face of the slide column 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 part is a pressure oil chamber, provided that the assembly method of the return spring consists, in particular, of the return spring being mounted on the shaft body of the central shaft between the upper end face of the piston and the inner end face of the slide column.

[0023] Furthermore, a flat bearing is arranged between the upper end surface of the return spring and the inner end surface of the slide column.

[0024] Furthermore, 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 between the outer wall of the piston and the inner wall of the outer sleeve, a sealing ring between the inner wall of the second closure cover and the outer wall of the output shaft, and a sealing ring 21 between the outer wall of the second closure cover and the inner wall of the outer sleeve.

[0025] Furthermore, the piston is a piston with a one-way valve.

[0026] Furthermore, a magnet is arranged on the inner end surface of the first cover part.

[0027] Furthermore, the door spindle, which can be opened and closed in two directions, is also equipped with a hydraulic oil flow control mechanism.

[0028] Furthermore, the specific structure of the hydraulic oil flow control mechanism consists in that a hole channel is arranged on the shaft body of the central shaft from the outer end face of the first end section along the axis of the central shaft, wherein an oil return hole is provided on the shaft body of the central shaft which is connected to the hole channel, and wherein a speed-setting oil needle is placed in the hole channel from bottom to top, and wherein a first end cap is screwed onto an outwardly facing end section of the first end cap, and wherein a speed-setting screw is screwed onto the middle through-hole of the first end cap, and wherein the speed-setting oil needle is embedded in one end of the speed-setting screw.and wherein the other end of the speed adjusting screw extends to the outside of the upper end face of the first cover and an adjusting wheel is fixedly installed at this end, and wherein a gap is provided between the central shaft and the inner hole of the first cover part, which is used as an oil passage.

[0029] Furthermore, the specific structure of the hydraulic oil flow control mechanism can further consist of a perforated channel being arranged on the shaft body from the outer end face of the first end section along the axis of the central shaft, wherein an oil return hole is provided on the shaft body of the central shaft which is connected to the perforated channel, and wherein a speed-setting oil needle is placed in the perforated channel from bottom to top, and wherein a first end cap is screwed onto an outwardly facing end section of the first end cap, and wherein a speed-setting screw is screwed onto the middle through-hole of the first end cap, and wherein the speed-setting oil needle is embedded in one end of the speed-setting screw.and wherein the other end of the speed adjusting screw extends to the outside of the upper end face of the first cover and an adjusting wheel is fixedly installed at this end, and wherein a through-hole is provided between the upper end face and the inner end face of the first cover part, which is used as an oil passage.

[0030] In the above two specific structures of the hydraulic oil flow control mechanism, 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 slide column, or the oil return hole is arranged on the outer end face of the second end section along the axis of the central shaft in such a way that it is in contact with the hole channel 903.

[0031] Furthermore, the speed-adjustment oil needle has a variable diameter. Additionally, a sealing ring is arranged between the inner wall of the first sealing cap and the outer wall of the speed-adjustment screw, and another sealing ring is arranged between the outer wall of the first sealing cap and the inner wall of the first cover part.

[0032] Using the technical solution of the present invention, the cumbersome installation of the floor spring and the hidden safety risk during use are resolved. This solves the problems that the use of a door spindle with one-way closing is inconvenient, and that the conventional door spindle with two-way closing does not offer precise positioning and the door leaf is offset after closing. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 shows a schematic cross-sectional diagram of the assembly of a first embodiment of the door spindle of the present invention, which can be opened and closed in two directions, wherein the door spindle, which can be opened and closed in two directions, is installed on the upper part of the door leaf and is assembled for use with the door frame on the left side and the door leaf on the right side; Fig. Figure 2 shows a schematic cross-sectional diagram of the assembly of a second embodiment of the door spindle, which can be opened and closed in two directions, of the present invention, wherein the door spindle, which can be opened and closed in two directions, is installed on the lower part of the door leaf and is assembled for use with the door frame on the left side and the door leaf on the right side; Fig. Figure 3 shows a schematic top view of the relative movement between the door frame and the door leaf, on which the door spindle, which can be opened and closed in two directions, is installed according to the present invention. Fig. Figure 4 shows a schematic cross-sectional diagram of the structural components of a first embodiment of the present invention according to Fig. 1; Fig. Figure 5 shows a schematic cross-sectional diagram of the structural components of a second embodiment of the present invention according to Fig. 2; Fig. Figure 6 shows a schematic diagram of the three-dimensional structure of a slide column and an output shaft in the second embodiment of the present invention according to Fig. 2; Fig. Figure 7 shows a schematic structural view of a central wave; Fig. Figure 8 shows a schematic structural view of a second closure lid; Fig. Figure 9 shows a schematic structural view of a positioning sleeve; Fig. Figure 10 shows a schematic cross-sectional diagram of an energy release state (left view) and an energy storage state (right view) of a first embodiment of the door spindle, which can be opened and closed in two directions, according to the present invention. Fig. 1; Fig. Figure 11 shows a schematic cross-sectional diagram of an energy release state (right view) and an energy storage state (left view) of a second embodiment of the door spindle, which can be opened and closed in two directions, according to the present invention. Fig. 2. Reference symbol list 1 Adjustment wheel 2 Speed ​​adjustment screw 3 First sealing lid 4 Speed ​​setting oil needle 5 wave box 6 Outer sleeve 601 Flange installation hole 7 Return spring 8 pistons 9 Central shaft 9001 First End Section 9002 Second End Section 10 sliding sleeve 901 First drive shaft 902 Second drive shaft 903 Hole channel 904 Oil return hole 12 slide columns 1201 First slide 1202 Second slide 1203 Output shaft 13 steel balls 14 Second sealing cap 1401 Positioning hole 15 positioning balls 16 Positioning spring 17 retaining ring 18 rolling bearings 1801 Bearing outer ring 1802 Inner bearing ring 19 Adjusting 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 flat bearings DETAILED DESCRIPTION

[0033] The present invention is explained in more detail below in conjunction with figures and exemplary embodiments to clarify its objective, technical solutions, and advantages. Please refer to the following for further reading: Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 to Fig. 10. In the present invention, the door spindle, which can be opened and closed in two directions, can be installed on the upper or lower part of the door leaf. The structures of the bidirectional door spindles installed on the upper and lower parts can be uniform or non-uniform. The reason for the non-uniformity is to account for the effect of gravity. If a hydraulic buffer mechanism is used, it is best to consider that, in a direction perpendicular to the floor, the oil reservoir chamber should be located on the upper part and the pressure oil chamber on the lower part, since the pressure oil chamber must be protected from air. If the pressure oil chamber is located on the upper part, air may enter, and air has high compressibility, which reduces the buffering effect of the hydraulic buffer. Example 1:

[0034] As in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. As shown in Figure 7, the present invention provides a door spindle that can be opened and closed in two directions, comprising an outer sleeve 6, a first cover part, a second cover part, an output shaft 1203, a slide column 12, a central shaft 9, a return spring 7, and a spring locking element, wherein one end of the outer sleeve 6 is provided with a flange on which a flange installation hole 601 is provided, and wherein the second cover part is arranged in a tubular cavity of the outer sleeve 6 located close to the flange installation hole 601, and wherein the first cover part is arranged in a tubular cavity at the other end of the outer sleeve 6, and wherein the outer sleeve 6 is rigidly connected to the first cover part and the second cover part, and wherein a first end section 9001 of the central shaft 9 projects into the inner cavity of the first cover part, and wherein the central shaft 9 and the first cover part form a fitting structure formwhich is axially displaceable and rotates synchronously, and wherein a second end section 9002 of the central shaft 9 projects into the inner cavity of the slide column 12, and wherein the second end section 9002 is provided with a first drive shaft 901 and a second drive shaft 902, which are arranged opposite each other, offset upwards and downwards, wherein the slide column is provided with a first slide 1201 and a second slide 1202, which are arranged opposite each other, offset upwards and downwards, and wherein the first slide 1201 and the second slide 1202 are each V-shaped, and wherein the first drive shaft 901 projects into the first slide 1201 and the second drive shaft 902 into the second slide 1202, and wherein the output shaft 1203 projects out from the cylindrical base of the slide column 12, and wherein the Output shaft 1203 protrudes from the inner cavity of the second cover part,and wherein the output shaft 1203 and the slide column 12 are movably connected to the second cover part, and wherein the output shaft 1203 and the slide column 12 move only circumferentially in the tubular cavity of the outer sleeve 6, and wherein the spring locking element is firmly embedded in the central section of the central shaft 9, and wherein the mounting method of the return spring 7 consists of placing the return spring 7 on the shaft body of the central shaft 9 between the upper end face of the spring locking element and the inner end face of a non-axially moving component located above the spring locking element; and wherein the spring locking element moves axially and compresses the return spring 7,when the output shaft 1203 and the slide column 12 move circumferentially in the tube cavity of the outer sleeve 6, and the first drive shaft 901 slides in the first slide 1201 and slides from the lowest position of the V-shape to the highest position of the V-shape, and the second drive shaft 902 slides in the second slide 1202 and slides from the lowest position of the V-shape to the highest position of the V-shape.

[0035] Since in the present embodiment the first slide 1201 and the second slide 1202 are each V-shaped and the first drive shaft 901 projects into the first slide 1201 and the second drive shaft 902 into the second slide 1202, the door spindle is in an energy release state, namely in a most stable state, when the first drive shaft 901 and the second drive shaft 902 are at the lowest position of the V-shape of their own slides. At this point, the first drive shaft and the second drive shaft can choose to slide in their own slides to the left inclined section or the right inclined section. Due to the engagement and energy storage, the door leaf can open and close in two directions.The product is embedded in the door leaf. During opening and closing, the gap between the door leaf and the door frame remains essentially unchanged, preventing a child's hand from being caught and injured. Furthermore, due to its positioning function, the product meets the safety and aesthetic requirements of modern social life. Example 2:

[0036] As in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. As shown in Figure 11, a reinforced positioning mechanism is furthermore installed in the inner cavity of the outer sleeve 6, wherein the second cover part is a second closure cover 14, and wherein the positioning mechanism comprises a second closure cover 14, a positioning sleeve 20, a positioning ball 15 and a positioning spring 16, and wherein the second closure cover 14 is formed as a whole in an annular shape, the two ends of which are recessed inwards and the central section is provided with a hollow stepped surface, and wherein several positioning holes 1401 are provided on the hollow stepped surface, and wherein the positioning sleeve 20 is formed as a whole in an annular shape and is fixedly mounted on the central section of the output shaft 1203, and wherein a through hole 2001 is provided at each of the positions of the positioning sleeve 20 corresponding to the positioning hole 1401.in which the positioning ball 15 and the positioning spring 16 are arranged vertically, and wherein the positioning ball 15 can be inserted into the positioning hole 1401 by the positioning spring 16, and wherein the output shaft 1203 penetrates the second closure cover 14 and the positioning sleeve 20.

[0037] Since the present embodiment still includes an enhanced positioning function, the requirements for safety and aesthetic impact in modern social life can be met.

[0038] Furthermore, several steel balls 13 are arranged between one outer end surface of the slide column 12 facing the output shaft 1203 and one inner end surface of the second closure cover 14 facing the slide column 12.

[0039] The function of the steel balls is to reduce wear between the second locking cover and the slide column.

[0040] Furthermore, at a position of the positioning sleeve 20 oriented perpendicular to the axis, an adjusting screw 19 is arranged for the synchronous connection of the positioning sleeve 20 and the movement of the output shaft 1203.

[0041] The function of the adjusting screw is to increase the synchronous movement of the positioning sleeve and the output shaft.

[0042] Furthermore, after passing through the positioning sleeve 20, the output shaft 1203 must pass through a rolling bearing 18 and a retaining ring 17 in succession, with the rolling bearing 18 being arranged between the outer bearing ring 1801 and the inner bearing ring 1802.

[0043] The function of the retaining ring is to restrict the output shaft so that it moves only circumferentially and not axially. The function of the rolling bearing is to improve the smoothness of the output shaft's circumferential movement.

[0044] Or the output shaft 1203, after passing through the positioning sleeve 20, must continue to pass through a rolling bearing and a retaining ring 17 in succession, wherein the rolling bearing 18 is arranged between the outer bearing ring 1801 and the inner bearing ring 1802, and wherein the inner bearing ring is rigidly connected to the output shaft 1203.

[0045] The function of the fixed connection between the inner bearing ring and the output shaft 1203 is to serve as a retaining ring.

[0046] Furthermore, the highest position of the V-shape of the first slide 1201 and the highest position of the V-shape of the second slide 1202 are each provided with a horizontal groove section that is aligned parallel to the end face of the slide column 12. The horizontal groove section includes a concave groove section that is arranged opposite the end face of the slide column.

[0047] The function of the horizontal groove section is to allow the door leaf to stop at any point, and the function of the concave groove section is to allow the door leaf to stop according to the angle in order to achieve the positioning stability of the opening angle of the door leaf.

[0048] Furthermore, a sliding sleeve 10 is attached to the shaft body of the first drive shaft 901 and the second drive shaft 902.

[0049] Under the action of the sliding sleeve, the drive shaft rotates more smoothly in the slide to reduce wear.

[0050] Furthermore, the first cover part is a shaft bushing 5, wherein a keyway is provided on the inner wall of the shaft bushing 5, and wherein a first end section 9001 projecting into the inner cavity of the shaft bushing 5 is provided with a splined shaft, and wherein the central shaft 9 and the shaft bushing 5 form a fitting structure which is axially displaceable and rotates synchronously, and wherein the central shaft 9 and the shaft bushing 5 achieve an axially displaceable connection and synchronous rotation through a fit between the splined shaft and the keyway.

[0051] The fit between the splined shaft and the keyway allows the central shaft and the shaft bushing to achieve a more precise synchronous rotation and an axially displaceable connection, and the processing of the components is also more convenient. Example 3:

[0052] As in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. As shown in Figure 11, a hydraulic buffer mechanism is further arranged in the inner cavity of the outer sleeve 6 between the inner end surface of the first cover part and the inner end surface of the slide column 12.

[0053] The use of the hydraulic buffer mechanism can control the closing speed of the door leaf, reduce the noise of the door closing, and prevent excessive closing speed from injuring people.

[0054] Furthermore, the hydraulic buffer mechanism includes a spring locking element, which is a piston 8.

[0055] Furthermore, 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 and the space between the lower end face of the piston 8 and the inner end face of the slide column 12 is a pressure oil chamber 23, if the assembly method of the return spring 7 consists in particular of the return spring 7 being placed 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 part.

[0056] The mounting method is mainly suitable for situations where the door spindle, which can be opened and closed in two directions, is used on the bottom part of the door leaf.

[0057] Furthermore, a retaining ring 17 is arranged between the return spring 7 and the upper end surface of the piston 8.

[0058] The function of the retaining ring is also to reduce the wear generated between the return spring and the piston due to the relative movement.

[0059] Furthermore, 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 between the outer wall of the piston 8 and the inner wall of the outer sleeve 6, a sealing ring 21 between the inner wall of the second end cap 14 and the outer wall of the output shaft 1203, and a sealing ring 21 between the outer wall of the second end cap 14 and the inner wall of the outer sleeve 6. Using the sealing ring, leakage of the hydraulic oil can be prevented.

[0060] Furthermore, piston 8 is a piston with a one-way valve.

[0061] Furthermore, a magnet 25 is arranged on the bottom of the inner wall of the slide column 12.

[0062] The magnet can absorb the fine metal shavings generated by wear between the components, thus keeping the hydraulic oil clean and maintaining the smooth operation of the door spindle. This mounting method is particularly suitable for situations where the door spindle, which can open and close in both directions, is used on the bottom of the door leaf, as in... Fig. 2 and Fig. 5 shown. Example 4:

[0063] As in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. As shown in Figure 11, the door spindle, which can be opened and closed in two directions, is also equipped with a hydraulic oil flow control mechanism.

[0064] Because the flow of hydraulic oil is controlled, the closing speed of the door can be adjusted more precisely.

[0065] Furthermore, the specific structure of the hydraulic oil flow control mechanism consists in that a hole channel 903 is arranged on the shaft body of the central shaft 9 from the outer end face of the first end section 9001 along the axis of the central shaft 9, wherein an oil return hole 904 is provided on the shaft body of the central shaft 9, which is connected to the hole channel 903, and wherein a speed-setting oil needle 4 is placed in the hole channel from top to bottom, and wherein a first cover cap 3 is screwed onto an outwardly facing end section of the first cover part, and wherein a speed-setting screw 2 is screwed onto the central through-hole of the first cover cap 3, and wherein the speed-setting oil needle 4 is embedded in one end of the speed-setting screw 2.and wherein the other end of the speed adjusting screw 2 projects out to the outer surface of the upper end face of the first cover and an adjusting wheel 1 is fixedly installed at this end, and wherein a gap is provided between the central shaft 9 and the inner hole of the first cover part, which is used as an oil passage.

[0066] In the present embodiment, the specific structure of the hydraulic oil flow control mechanism is particularly suitable for situations where the door spindle, which can be opened and closed in two directions, is used on the lower part of the door leaf.

[0067] Furthermore, the specific structure of the hydraulic oil flow control mechanism can consist of a perforated channel 903 being arranged on the shaft body of the central shaft 9 from the outer end face of the first end section 9001 along the axis of the central shaft 9, wherein an oil return hole 904 is provided on the shaft body of the central shaft 9, which is connected to the perforated channel 903, and wherein a speed-adjusting oil needle 4 is placed in the perforated channel from top to bottom, and wherein a first cover cap 3 is screwed onto an outwardly facing end section of the first cover part, and wherein a speed-adjusting screw 2 is screwed onto the central through-hole of the first cover cap 3, and wherein the speed-adjusting oil needle 4 is embedded in one end of the speed-adjusting screw 2.and wherein the other end of the speed adjusting screw 2 projects outwards to the outer side of the upper end face of the first cover and an adjusting wheel 1 is fixedly installed at this end, and wherein a through-hole is provided between the upper end face and the inner end face of the first cover part, which is used as an oil passage.

[0068] In the above two specific structures of the hydraulic oil flow control mechanism, 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 slide column 12, or the oil return hole 904 is arranged on the outer end face of the second end section 9002 along the axis of the central shaft 9 such that it is in contact with the hole channel 903.

[0069] The actual function of the first cover part is to block one end of the outer sleeve to prevent leakage of the hydraulic oil, and the first cover part is formed by a combination of the shaft bushing 5 and the first closure cover 3 and may also be arranged in other ways.

[0070] The specific structure of the hydraulic oil flow control mechanism is mainly suitable for situations where the door spindle, which can be opened and closed in two directions, is used on the lower part of the door leaf.

[0071] Furthermore, the speed setting oil needle 4 has a variable diameter.

[0072] Since the relevant parts of the speed-adjustment oil needle have different thicknesses, adjusting the depth of the needle entering the orifice channel allows the amount of hydraulic oil flowing through the channel to be changed. This enables the user to control the closing speed of the hinge as needed, thereby controlling the closing speed of the door leaf. Preferably, the speed-adjustment oil needle is tapered.

[0073] Furthermore, a sealing ring 21 is arranged between the inner wall of the first sealing cap 3 and the outer wall of the speed adjusting screw 2, and a sealing ring 21 is arranged between the outer wall of the first sealing cap and the inner wall of the first cover part. Using the sealing ring, leakage of the hydraulic oil can be prevented. Furthermore, the space between the upper end face of the piston 8 and the inner end face of the slide column 12 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 part is a pressure oil chamber 23, if the assembly method of the return spring 7 consists, in particular, of the return spring 7 being placed 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 slide column 12.

[0074] The mounting method is mainly suitable for situations where the door spindle, which can be opened and closed in two directions, is used on the top part of the door leaf.

[0075] Furthermore, a flat bearing 26 is arranged between the upper end surface of the return spring 7 and the inner end surface of the slide column 12.

[0076] The function of the flat bearing is to reduce wear between the slide column and the return spring, thus making the opening and closing of the door leaf smoother. This mounting method is primarily suitable for situations where the door spindle, which can open and close in both directions, is used at the top of the door leaf, as in... Fig. 1 and Fig. 4 shown.

[0077] Furthermore, 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 between the outer wall of the piston 8 and the inner wall of the outer sleeve 6, a sealing ring 21 between the inner wall of the second end cap 14 and the outer wall of the output shaft 1203, and a sealing ring 21 between the outer wall of the second end cap 14 and the inner wall of the outer sleeve 6. Using the sealing ring, leakage of the hydraulic oil can be prevented.

[0078] Furthermore, piston 8 is a piston with a one-way valve.

[0079] Furthermore, a magnet 25 is arranged on the inner end surface of the first cover part.

[0080] The magnet can absorb the fine metal shavings generated by wear between the components, thus keeping the hydraulic oil clean and maintaining the smooth movement of the door spindle.

[0081] Furthermore, the door spindle, which can be opened and closed in two directions, is also equipped with a hydraulic oil flow control mechanism.

[0082] Furthermore, the specific structure of the hydraulic oil flow control mechanism consists in that a hole channel 903 is arranged on the shaft body of the central shaft 9 from the outer end face of the first end section 9001 along the axis of the central shaft 9, wherein an oil return hole 904 is provided on the shaft body of the central shaft 9, which is connected to the hole channel 903, and wherein a speed-setting oil needle 4 is placed in the hole channel 903 from bottom to top, and wherein a first cover cap 3 is screwed onto an outwardly facing end section of the first cover part, and wherein a speed-setting screw 2 is screwed onto the middle through-hole of the first cover cap 3, and wherein the speed-setting oil needle 4 is embedded in one end of the speed-setting screw 2.and wherein the other end of the speed adjusting screw 2 projects out to the outer surface of the upper end face of the first cover and an adjusting wheel 1 is fixedly installed at this end, and wherein a gap is provided between the central shaft 9 and the inner hole of the first cover part, which is used as an oil passage.

[0083] The specific structure of the hydraulic oil flow control mechanism is mainly suitable for situations where the door spindle, which can be opened and closed in two directions, is used on the top of the door leaf.

[0084] Furthermore, the specific structure of the hydraulic oil flow control mechanism can consist of a perforated channel 903 being arranged on the shaft body of the central shaft 9 from the outer end face of the first end section 9001 along the axis of the central shaft 9, wherein an oil return hole 904 is provided on the shaft body of the central shaft 9, which is connected to the perforated channel 903, and wherein a speed-adjusting oil needle 4 is placed in the perforated channel 903 from bottom to top, and wherein a first cover cap 3 is screwed onto an outwardly directed end section of the first cover part, and wherein a speed-adjusting screw 2 is screwed onto the central through-hole of the first cover cap 3, and wherein the speed-adjusting oil needle 4 is embedded in one end of the speed-adjusting screw 2.and wherein the other end of the speed adjusting screw 2 projects outwards to the outer side of the upper end face of the first cover and an adjusting wheel 1 is fixedly installed at this end, and wherein a through-hole is provided between the upper end face and the inner end face of the first cover part, which is used as an oil passage.

[0085] In the above two specific structures of the hydraulic oil flow control mechanism, 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 slide column 12, or the oil return hole 904 is arranged on the outer end face of the second end section 9002 along the axis of the central shaft 9 such that it is in contact with the hole channel 903.

[0086] Furthermore, the speed setting oil needle 4 has a variable diameter.

[0087] Since the relevant parts of the speed-adjustment oil needle have different thicknesses, adjusting the depth of the needle entering the orifice channel allows the amount of hydraulic oil flowing through the channel to be changed. This enables the user to control the closing speed of the hinge as needed, thereby controlling the closing speed of the door leaf. Preferably, the speed-adjustment oil needle is tapered.

[0088] Furthermore, a sealing ring 21 is arranged between the inner wall of the first closure cover 3 and the outer wall of the speed adjustment screw 2, and a sealing ring 21 is arranged between the outer wall of the first closure cover and the inner wall of the first cover part. Using the sealing ring, leakage of the hydraulic oil can be prevented. The relatively good application scenario of the exemplary embodiment of the present invention is described as follows: when the door spindle, which can be opened and closed in two directions, is embedded in the upper part of the door leaf, the door spindle is fastened to the door leaf through the flange installation hole 601 of the outer sleeve 6, and the output shaft 1203 is connected to the door frame by a component; when the user opens and closes the door leaf in the actual operating process, this means that an external force rotates the output shaft 1203, causing the slide column 12 to rotate as a whole;Since the central shaft 9 and the shaft bushing 5 interact synchronously in an axially displaceable manner and are connected to each other, and since the shaft bushing 5, the outer sleeve 6 and the second end cap 14 are firmly connected, the first slide 1201 and the second slide 1202 rotate when the slide column 12 rotates in order to drive the first drive shaft 901 and the second drive shaft 902 for upward displacement in the first slide 1201 (as in ; Fig. (10 shown from left to right), the central shaft 9 is only driven to move axially; when the first drive shaft 901 and the second drive shaft 902 are at the lowest position of the V-shape of the first slide and the second slide, the central shaft 9 can be moved in the axial direction, regardless of whether the first drive shaft 901 and the second drive shaft 902 are rotated to the left or right, and the piston also follows the movement and compresses the return spring 7 to store energy, and the hydraulic oil from the oil reservoir chamber 24 flows through the one-way valve 22 into the pressure oil chamber 23; when the first drive shaft 901 and the second drive shaft 902 are in a groove aligned parallel to the horizontal end face at the highest position of the V-shape of the first slide and the second slide, the central shaft 9 does not move in the axial direction;When the central shaft moves towards the concave groove section, the sliding sleeve 10 is clamped and positioned in the concave groove section under the pressure of the return spring 7, the circumferential movement of the central shaft is limited, and the central shaft remains at a fixed angle, and the return spring 7 is in an energy storage state; when the output shaft 1203 rotates, the positioning sleeve 20 also moves with it, the positioning ball 15 detaches from the positioning hole 1401 and slides along the periphery of the hollow stepped surface of the second closure cover 14; as the positioning ball 15 detaches from the positioning hole 1401, it moves upwards to compress the positioning spring 16 for energy storage;When the output shaft 1203 rotates 90 degrees to the left or right, the positioning spring 16 releases the energy to push the lower spherical body of the positioning ball 15 into the positioning hole 1401, thus achieving a reinforced positioning of 90 degrees; when the door spindle, which can be opened and closed in two directions, is in the open position, namely when the first drive shaft 901 and the second drive shaft 902 are in a groove located at the highest position of the V-shape of the first slide and the second slide, aligned parallel to the horizontal end surface, the output shaft 1203 is rotated in a direction opposite to the original opening direction, so that the slide 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 slide, the return spring 7 releases the energy to drive the piston 8 and the central shaft 9 downwards in the axial direction; the second drive shaft 902 and the first drive shaft 901 also move downwards and slide through the inclined section of the V-shaped slide to the lowest position at the bottom of the V-shaped slide, so that the slide column 12 and the positioning sleeve 20 rotate and reset as a whole to achieve automatic closing; during the rotation, the lower ball body of the positioning ball 15 disengages from the positioning hole 1401 to release the clamping and 90-degree positioning, and compresses the positioning spring 16 to store energy;During the middle operation, the positioning ball 15 slides along the periphery of the hollow stepped surface of the second cover 14; then the positioning spring 16 releases energy and pushes the lower spherical body of the positioning ball 15 into the positioning hole 1401 to achieve a positioning of 0 degrees; when the piston 8 moves downwards, the one-way valve on the piston is closed to force the hydraulic oil from the pressure oil chamber 230 to flow through an oil return channel arranged in the central shaft 9 into the oil storage chamber 24; the oil from the pressure oil chamber 23 can flow through the gap between the outer cylinder body of the first end section 9001 of the central shaft and the shaft bushing 5 of the first cover part into the hole channel 903 of the central shaft and through the oil return hole 904 on the hole channel into the oil storage chamber 24;The user can control the return speed of the hydraulic oil to achieve a buffered closing action; the speed adjustment screw 2 is turned by the adjusting wheel 1, and the flow of the hydraulic oil is controlled by changing the depth to which the speed adjustment oil needle 4 with a conical needle bar is inserted into the hole channel of the central shaft 9, and the gap between the speed adjustment oil needle 4 and the hole channel 903, in order to achieve the adjustability of the closing speed.

[0089] When the door spindle, which can be opened and closed in two directions, is embedded in the lower part of the door leaf, the door spindle is attached to the door leaf through the flange installation hole 601 of the outer sleeve 6, the output shaft 1203 is connected to the floor covering or the bottom of the door frame by a component; when the user opens and closes the door leaf in the actual usage process, this means that an external force rotates the output shaft 1203, causing the slide column 12 to rotate as a whole;Since the central shaft 9 and the shaft bushing 5 interact synchronously in an axially displaceable manner and are connected to each other, and since the shaft bushing 5, the outer sleeve 6 and the second end cap 14 are firmly connected, the first slide 1201 and the second slide 1202 rotate when the slide column 12 rotates in order to drive the first drive shaft 901 and the second drive shaft 902 for upward displacement in the first slide 1201 (as in ; Fig.(11 shown from right to left), the central shaft 9 is only driven to move axially; when the first drive shaft 901 and the second drive shaft 902 are at the lowest position of the V-shape of the first slide and the second slide, the central shaft 9 can be moved in the axial direction, regardless of whether the first drive shaft 901 and the second drive shaft 902 are rotated to the left or right, and the piston also follows the movement and compresses the return spring 7 to store energy, and the hydraulic oil from the oil reservoir chamber 24 flows through the one-way valve 22 into the pressure oil chamber 23; when the first drive shaft 901 and the second drive shaft 902 are in a groove aligned parallel to the horizontal end face at the highest position of the V-shape of the first slide and the second slide, the central shaft 9 does not move in the axial direction;When the central shaft moves towards the concave groove section, the sliding sleeve 10 is clamped and positioned in the concave groove section under the pressure of the return spring 7, the circumferential movement of the central shaft is limited, and the central shaft remains at a fixed angle, and the return spring 7 is in an energy storage state; when the output shaft 1203 rotates, the positioning sleeve 20 also moves with it, the positioning ball 15 detaches from the positioning hole 1401 and slides along the periphery of the hollow stepped surface of the second closure cover 14; as the positioning ball 15 detaches from the positioning hole 1401, it moves downwards to compress the positioning spring 16 for energy storage;When the output shaft 1203 rotates 90 degrees to the left or right, the positioning spring 16 releases the energy to push the upper spherical body of the positioning ball 15 into the positioning hole 1401, thus achieving a reinforced positioning of 90 degrees; when the door spindle, which can be opened and closed in two directions, is in the open position, namely when the first drive shaft 901 and the second drive shaft 902 are in a groove located at the highest position of the V-shape of the first slide and the second slide, aligned parallel to the horizontal end surface, the output shaft 1203 is rotated in a direction opposite to the original opening direction, so that the slide 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 slide, the return spring 7 releases the energy to drive the piston 8 and the central shaft 9 downwards in the axial direction; the second drive shaft 902 and the first drive shaft 901 also move downwards and slide through the inclined section of the V-shaped slide to the lowest position at the bottom of the V-shaped slide, so that the slide column 12 and the positioning sleeve 20 rotate and reset as a whole to achieve automatic closing; during the rotation, the upper ball body of the positioning ball 15 detaches from the positioning hole 1401 to release the clamping and 90-degree positioning, and compresses the positioning spring 16 to store energy;During the middle phase of the movement, the positioning ball 15 slides along the periphery of the hollow, stepped surface of the second cover 14. The positioning spring 16 then releases its energy and pushes the upper spherical body of the positioning ball 15 into the positioning hole 1401 to achieve a 0-degree position. As the piston 8 moves downwards, the one-way valve 22 on the piston closes, forcing the hydraulic oil from the pressure oil chamber 23 to flow through an oil return channel located in the central shaft 9 into the oil reservoir chamber 24. The oil from the pressure oil chamber 23 can flow through the oil return hole 904 into the hole channel 903 of the central shaft and then through the gap between the central shaft and the first cover part or the shaft bushing into the oil reservoir cavity 24. The user can control the return speed of the hydraulic oil to achieve a buffered closing action.The speed adjustment screw 2 is turned by the adjusting wheel 1, and the flow of hydraulic oil is controlled by changing the depth to which the speed adjustment oil needle 4 is inserted with a conical needle bar into the hole channel of the central shaft 9, and the gap between the speed adjustment oil needle 4 and the hole channel 903, in order to achieve the adjustability of the closing speed.

[0090] Above, a door spindle provided by the embodiments of the present invention, which can be opened and closed in two directions, is explained in more detail. The description explains the principle and embodiments of the present invention with concrete examples, and the explanation of the above embodiments serves only to aid understanding of the core idea of ​​the present utility model. According to the spirit of the present invention, a person skilled in the art in this field would make a modification regarding the detailed embodiment and the scope of application. In summary, the content of this description should not be understood as limiting the present invention.

Claims

[1] Door spindle that can be opened and closed in two directions, characterized by , that they comprise an outer sleeve (6), a first cover part, a second cover part, an output shaft (1203), a slide column (12), a central shaft (9), a return spring (7) and a spring locking part, wherein one end of the outer sleeve (6) is provided with a flange on which a flange installation hole (601) is provided, and wherein the second cover part is arranged in a tubular cavity of the outer sleeve (6) located close to the flange installation hole (601), and wherein the first cover part is arranged in a tubular cavity at the other end of the outer sleeve (6), and wherein the outer sleeve (6) is firmly connected to the first cover part and the second cover part, and wherein a first end section (9001) of the central shaft (9) projects into the inner cavity of the first cover part, and wherein the central shaft (9) and the first cover part form a fitting structure which is axially displaceable and rotates synchronously, and wherein a second end section (9002) of the central shaft (9) projects into the inner cavity of the slide column (12), and wherein the second end section (9002) is provided with a first drive shaft (901) and a second drive shaft (902) which are arranged opposite each other, offset upwards and downwards, wherein the slide column is provided with a first slide (1201) and a second slide (1202) which are arranged opposite each other, offset upwards and downwards, and wherein the first slide (1201) and the second slide (1202) are each V-shaped, and wherein the first drive shaft (901) extends into the first slide (1201) and the second drive shaft (902) extends into the second slide (1202), and wherein the output shaft (1203) protrudes from the cylinder base of the slide column (12), and wherein the output shaft (1203) protrudes from the inner cavity of the second cover part, and wherein the output shaft (1203) and the slide column (12) are movably connected to the second cover part, and wherein the output shaft (1203) and the slide column (12) move only in the circumferential direction in the tubular cavity of the outer sleeve (6), and wherein the spring locking element is firmly embedded in the central section of the central shaft (9), and wherein the assembly method of the return spring (7) consists of placing the return spring (7) on the shaft body of the central shaft (9) between the upper end face of the spring locking element and the inner end face of a non-axially moving component located above the spring locking element; and wherein the spring locking part moves axially and compresses the return spring (7) when the output shaft (1203) and the slide column (12) move circumferentially in the tubular cavity of the outer sleeve (6) and the first drive shaft (901) slides in the first slide (1201) and slides from the lowest position of the V-shape to the highest position of the V-shape and the second drive shaft (902) slides in the second slide (1202) and slides from the lowest position of the V-shape to the highest position of the V-shape. [2] Door spindle which can be opened and closed in two directions, according to claim 1, characterized by , that a reinforced positioning mechanism is further installed in the inner cavity of the outer sleeve (6), wherein the second cover part is a second closure cover (14), and wherein the reinforced positioning mechanism comprises the second closure cover (14), a positioning sleeve (20), a positioning ball (15) and a positioning spring (16), and wherein the second closure cover (14) is formed as a whole in a ring shape, the two ends of which are recessed inwards and the central section is provided with a hollow stepped surface, and wherein several positioning holes (1401) are provided on the hollow stepped surface, and wherein the positioning sleeve (20) is formed as a whole in an annular shape and is fixedly mounted on the central section of the output shaft (1203), and wherein a through hole (2001) is provided at each of the positions of the positioning sleeve (20) corresponding to the positioning hole (1401), in which the positioning ball (15) and the positioning spring (16) are arranged vertically, and wherein the positioning ball (15) can be inserted into the positioning hole (1401) by the positioning spring (16), and wherein the output shaft (1203) penetrates the second closure cover (14) and the positioning sleeve (20). [3] Door spindle which can be opened and closed in two directions, according to claim 2, characterized by , that several steel balls (13) are arranged between one of the outer end faces of the slide column (12) facing the output shaft (1203) and one of the inner end faces of the second closure cover (14) facing the slide column (12). [4] Door spindle which can be opened and closed in two directions, according to claim 2, characterized by , that at a position of the positioning sleeve (20) oriented perpendicular to the axis an adjusting screw (19) is arranged for synchronous connection of the positioning sleeve (20) and the movement of the output shaft (1203). [5] Door spindle which can be opened and closed in two directions, according to claim 2, characterized by , that the output shaft (1203), after passing through the positioning sleeve (20), must continue to pass through a rolling bearing (18) and a retaining ring (17) in succession, with the rolling bearing (18) being arranged between the outer bearing ring (1801) and the inner bearing ring (1802). [6] Door spindle which can be opened and closed in two directions, according to claim 2, characterized by , that the output shaft (1203), after passing through the positioning sleeve (20), must continue to pass through a rolling bearing (18) and a retaining ring (17) in succession, wherein the rolling bearing (18) is arranged between the outer bearing ring (1801) and the inner bearing ring (1802), and wherein the inner bearing ring is rigidly connected to the output shaft (1203). [7] Door spindle which can be opened and closed in two directions, according to claim 2, characterized by, that the highest position of the V-shape of the first slide (1201) and the highest position of the V-shape of the second slide (1202) are each provided with a horizontal groove section that is aligned parallel to the end face of the slide column (12), wherein the horizontal groove section includes a concave groove section that is arranged opposite the end face of the slide column. [8] Door spindle which can be opened and closed in two directions, according to one of claims 2 to 7, characterized by , that a sliding sleeve (10) is fitted to the shaft body of the first drive shaft (901) and the second drive shaft (902). [9] Door spindle which can be opened and closed in two directions, according to any one of claims 2 to 7, characterized by, that the first cover part is a shaft bushing (5) wherein a keyway is provided on the inner wall of the shaft bushing (5), and wherein a first end section (9001) projecting into the inner cavity of the shaft bushing (5) is provided with a splined shaft, and wherein the central shaft (9) and the shaft bushing (5) form a fitting structure which is axially displaceable and rotates synchronously, and wherein the central shaft (9) and the shaft bushing (5) realize an axially displaceable connection and synchronous rotation by means of a fit between the splined shaft and the keyway. [10] Door spindle which can be opened and closed in two directions, according to one of claims 2 to 7, characterized by , that a hydraulic buffer mechanism is arranged in the inner cavity of the outer sleeve (6) between the inner end surface of the first cover part and the inner end surface of the slide column (12). [11] Door spindle which can be opened and closed in two directions, according to claim 10, characterized by , that the hydraulic buffer mechanism includes a spring locking part which is a piston (8). [12] Door spindle which can be opened and closed in two directions, according to claim 11, characterized by , that 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) and the space between the lower end face of the piston (8) and the inner end face of the slide column (12) is a pressure oil chamber (23) if the assembly method of the return spring (7) consists in particular in the return spring (7) being placed 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 part. [13] Door spindle which can be opened and closed in two directions, according to claim 12, characterized by, that a retaining ring (17) is arranged between the return spring (7) and the upper end face of the piston (8). [14] Door spindle which can be opened and closed in two directions, according to claim 13, characterized by , 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), a sealing ring (21) is arranged between the inner wall of the second closure cover (14) and the outer wall of the output shaft (1203), and a sealing ring (21) is arranged between the outer wall of the second closure cover (14) and the inner wall of the outer sleeve (6). [15] Door spindle which can be opened and closed in two directions, according to one of claims 12, 13 and 14, characterized by , that the piston (8) is a piston with a one-way valve (22). [16] Door spindle which can be opened and closed in two directions, according to one of claims 12, 13 and 14, characterized by , that a magnet (25) is arranged on the bottom of the inner wall of the slide column (12). [17] Door spindle which can be opened and closed in two directions, according to one of claims 12, 13 and 14, characterized by , that the door spindle, which can be opened and closed in two directions, is still equipped with a hydraulic oil flow control mechanism. [18] Door spindle which can be opened and closed in two directions, according to claim 17, characterized by , that the specific structure of the hydraulic oil flow control mechanism consists in that a hole channel (903) is arranged on the shaft body from the outer end face of the first end section (9001) along the axis of the central shaft (9), wherein an oil return hole (904) is provided on the shaft body of the central shaft (9) which is connected to the hole channel (903), and wherein a speed-setting oil needle (4) is placed in the hole channel from top to bottom, and wherein a first closure cover (3) is screwed onto an outwardly directed end section of the first cover part, and wherein a speed adjusting screw (2) is screwed onto the central through-hole of the first closure cover (3), and wherein the speed adjusting oil needle (4) is embedded in one end of the speed adjusting screw (2), and wherein the other end of the speed adjusting screw (2) protrudes to the outside of the upper end face of the first closure cover and an adjusting wheel (1) is fixedly installed at this end, and wherein a gap is provided between the central shaft (9) and the inner hole of the first cover part, which is used as an oil passage. [19] Door spindle which can be opened and closed in two directions, according to claim 17, characterized by , that the specific structure of the hydraulic oil flow control mechanism consists in that a hole channel (903) is arranged on the shaft body from the outer end face of the first end section (9001) along the axis of the central shaft (9), wherein an oil return hole (904) is provided on the shaft body of the central shaft (9) which is connected to the hole channel (903), and wherein a speed-setting oil needle (4) is placed in the hole channel from top to bottom, and wherein a first closure cover (3) is screwed onto an outwardly directed end section of the first cover part, and wherein a speed adjusting screw (2) is screwed onto the central through-hole of the first closure cover (3), and wherein the speed adjusting oil needle (4) is embedded in one end of the speed adjusting screw (2), and wherein the other end of the speed adjusting screw (2) protrudes to the outside of the upper end face of the first closure cover and an adjusting wheel (1) is fixedly installed at this end, and wherein a through-hole is provided between the upper end surface and the inner end surface of the first cover part, which is used as an oil passage. [20] Door spindle which can be opened and closed in two directions, according to claim 18 or 19, characterized by, that 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 slide column (12), or that the oil return hole (904) is arranged on the outer end face of the second end section (9002) along the axis of the central shaft (9) in such a way that it is in contact with the hole channel (903). [21] Door spindle which can be opened and closed in two directions, according to claim 18 or 19, characterized by , that the speed setting oil needle (4) has a variable diameter. [22] Door spindle which can be opened and closed in two directions, according to claim 18 or 19, characterized by, that a sealing ring (21) is arranged between the inner wall of the first closure cover (3) and the outer wall of the speed adjustment screw (2) and a sealing ring (21) is arranged between the outer wall of the first closure cover and the inner wall of the first cover part. [23] Door spindle which can be opened and closed in two directions, according to claim 11, characterized by , that the space between the upper end face of the piston (8) and the inner end face of the slide column (12) 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 part is a pressure oil chamber (23), if the assembly method of the return spring (7) consists in particular in the return spring (7) being placed 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 slide column (12). [24] Door spindle which can be opened and closed in two directions, according to claim 23, characterized by , that a flat bearing (26) is arranged between the upper end surface of the return spring (7) and the inner end surface of the slide column (12). [25] Door spindle which can be opened and closed in two directions, according to claim 24, characterized by , 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), a sealing ring (21) is arranged between the inner wall of the second closure cover (14) and the outer wall of the output shaft (1203), and a sealing ring (21) is arranged between the outer wall of the second closure cover (14) and the inner wall of the outer sleeve (6). [26] Door spindle which can be opened and closed in two directions, according to one of claims 23, 24 and 25, characterized by, that the piston (8) is a piston with a one-way valve (22). [27] Door spindle which can be opened and closed in two directions, according to one of claims 23, 24 and 25, characterized by , that a magnet (25) is arranged on the inner end surface of the first cover part. [28] Door spindle which can be opened and closed in two directions, according to one of claims 23, 24 and 25, characterized by , that the door spindle, which can be opened and closed in two directions, is still equipped with a hydraulic oil flow control mechanism. [29] Door spindle which can be opened and closed in two directions, according to claim 28, characterized by , that the specific structure of the hydraulic oil flow control mechanism consists in that a hole channel (903) is arranged on the shaft body from the outer end face of the first end section (9001) along the axis of the central shaft (9), wherein an oil return hole (904) is provided on the shaft body of the central shaft (9) which is connected to the hole channel (903), and wherein a speed-adjustment oil needle (4) is placed in the hole channel (903) from bottom to top, and wherein a first closure cover (3) is screwed onto an outwardly directed end section of the first cover part, and wherein a speed adjusting screw (2) is screwed onto the central through-hole of the first closure cover (3), and wherein the speed adjusting oil needle (4) is embedded in one end of the speed adjusting screw (2), and wherein the other end of the speed adjusting screw (2) protrudes to the outside of the upper end face of the first closure cover and an adjusting wheel (1) is fixedly installed at this end, and wherein a gap is provided between the central shaft (9) and the inner hole of the first cover part, which is used as an oil passage. [30] Door spindle which can be opened and closed in two directions, according to claim 28, characterized by , that the specific structure of the hydraulic oil flow control mechanism consists in that a hole channel (903) is arranged on the shaft body from the outer end face of the first end section (9001) along the axis of the central shaft (9), wherein an oil return hole (904) is provided on the shaft body of the central shaft (9) which is connected to the hole channel (903), and wherein a speed-adjustment oil needle (4) is placed in the hole channel (903) from bottom to top, and wherein a first closure cover (3) is screwed onto an outwardly directed end section of the first cover part, and wherein a speed adjusting screw (2) is screwed onto the central through-hole of the first closure cover (3), and wherein the speed adjusting oil needle (4) is embedded in one end of the speed adjusting screw (2), and wherein the other end of the speed adjusting screw (2) protrudes to the outside of the upper end face of the first closure cover and an adjusting wheel (1) is fixedly installed at this end, and wherein a through-hole is provided between the upper end surface and the inner end surface of the first cover part, which is used as an oil passage. [31] Door spindle which can be opened and closed in two directions, according to claim 29 or 30, characterized by, that 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 slide column (12), or the oil return hole (904) is arranged on the outer end face of the second end section (9002) along the axis of the central shaft (9) such that it is in contact with the hole channel (903). [32] Door spindle which can be opened and closed in two directions, according to claim 29 or 30, characterized by , that the speed setting oil needle (4) has a variable diameter. [33] Door spindle which can be opened and closed in two directions, according to claim 29 or 30, characterized by, that a sealing ring (21) is arranged between the inner wall of the first closure cover (3) and the outer wall of the speed adjustment screw (2) and a sealing ring (21) is arranged between the outer wall of the first closure cover and the inner wall of the first cover part.

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