CN216157415U

CN216157415U - A damping mechanism and door

Info

Publication number: CN216157415U
Application number: CN202121629584.0U
Authority: CN
Inventors: 林孝发; 林孝山; 郑鹏兴; 刘启乔; 邓小清; 邓飞明
Original assignee: Fujian Xihe Sanitary Ware Technology Co Ltd
Current assignee: Fujian Xihe Sanitary Ware Technology Co Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-04-01
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses a damping mechanism and a door. A liquid discharge hole is arranged in the seat body, and damping liquid is contained between the pressure reducing piston and the damping piston; the needle valve is in threaded fit with the decompression piston in a position adjustable along a first direction and penetrates through the liquid leakage hole, and the part of the outer diameter of the needle valve, which penetrates through the liquid leakage hole, is continuously changed; the adjusting rod rotates relative to the seat body around a second axis parallel to the first direction, one end of the adjusting rod is in sliding rotation-stopping fit with the needle valve along the first direction, and the other end of the adjusting rod penetrates through the seat body along the first direction; the first elastic piece supports one side of the pressure reducing piston far away from the damping piston. The damping mechanism and the door can realize the prior adjustment of the liquid leakage speed of the liquid leakage hole according to the requirement, and are convenient to adjust.

Description

Damping mechanism and door

Technical Field

The utility model relates to the technical field of door installation, in particular to a damping mechanism and a door.

Background

The speed of damping fluid velocity can not be adjusted to current damping mechanism, and damping mechanism installs when the door, and buffering effect is unsatisfactory, can not adjust as required, and is comparatively inconvenient when just current damping mechanism adjusts.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcoming the above-mentioned drawbacks and problems of the related art, and providing a damping mechanism and a door capable of adjusting the speed of a damping fluid as required and being easily adjusted.

In order to achieve the purpose, the utility model adopts the following technical scheme:

according to the technical scheme, the damping mechanism comprises a base body, wherein a damping cavity is arranged in the base body, and the damping cavity is provided with a first cavity, a second cavity and a liquid leakage hole positioned between the first cavity and the second cavity along a first direction; the rotating shaft rotates around a first axis perpendicular to the first direction relative to the seat body and is provided with a cam; a damping piston disposed in the first chamber and abutting against the cam of the rotating shaft in a first direction; the pressure reducing piston is arranged in the second chamber, and damping liquid is contained between the pressure reducing piston and the damping piston; the needle valve is in threaded fit with the pressure reducing piston in an adjustable mode along a first direction position and penetrates through the liquid leakage hole, and the part of the outer diameter of the needle valve, which penetrates through the liquid leakage hole, continuously changes; the adjusting rod rotates around a second axis parallel to the first direction relative to the seat body, one end of the adjusting rod is in sliding rotation-stopping fit with the needle valve along the first direction, and the other end of the adjusting rod penetrates through the seat body along the first direction; and a first elastic member disposed in the second chamber and supporting a side of the decompression piston away from the damping piston.

Based on technical scheme one, still be equipped with technical scheme two, in technical scheme two, the part that runs through the drain hole on the external diameter of needle valve is crescent along the direction of second cavity to first cavity.

Based on the second technical scheme, a third technical scheme is further provided, and the third technical scheme further comprises an adjusting piece; one end of the adjusting rod, which extends out of the seat body, is provided with a cylindrical gear, and the adjusting rod slides along a first direction relative to the seat body; the adjusting piece rotates around a third axis parallel to the first axis relative to the seat body and is provided with a face gear meshed with the cylindrical gear; the adjusting piece is axially limited relative to the seat body.

Based on technical scheme three, still be equipped with technical scheme four, in technical scheme four, extend along the first direction in the decompression piston and be equipped with the first through-hole coaxial with the weeping hole, first through-hole inner wall is equipped with annular spacing groove, adjust the pole and be equipped with insert first through-hole and with the lug of annular spacing groove along first direction joint.

Based on the fourth technical scheme, a fifth technical scheme is further provided, and in the fifth technical scheme, inner threads are further arranged on the inner wall of the first through hole; the adjusting rod is also provided with a slot which is inserted into the first through hole and extends along the first direction corresponding to the position of the internal thread; the needle valve is inserted slot and relative slot slide along the first direction, the needle valve still be equipped with stretch out the slot and with internal thread screw-thread fit's external screw thread.

Based on the fifth technical scheme, the seat body is further provided with a sixth technical scheme, wherein in the sixth technical scheme, the seat body is provided with a second through hole along a third axis, and the seat body is further provided with a supporting surface and a propping surface which are perpendicular to the third axis and deviate from each other; the adjusting piece penetrates through the second through hole, and an adjusting part is arranged at one end, far away from the face gear, of the adjusting piece, and the adjusting part is configured to be suitable for driving the adjusting piece to rotate; the adjusting piece is also provided with an abutting surface for abutting against the supporting surface; the face gear is further configured to abut against the abutting face.

Based on the technical schemes two to six, a technical scheme seven is further provided, and in the technical scheme seven, the device further comprises a moving seat and a second elastic piece; the seat body comprises a body and a pressing seat; the damping cavity is formed in the body, a partition wall is formed in the body, and the liquid discharge hole is formed in the partition wall; the pressing seat is arranged between the partition wall and the damping piston and is fixedly connected with the body, and a liquid passing channel is arranged on the pressing seat; the movable seat is arranged between the abutting seat and the partition wall; two ends of the second elastic piece respectively act on the movable seat and the pressing seat; the movable seat moves between a first position and a second position; when the damping piston moves towards the direction of the pressure reducing piston, the moving seat is jacked by the second elastic piece to move to a first position where the moving seat is abutted against the partition wall and part of the liquid leakage holes are blocked; when the pressure reducing piston moves towards the direction of the damping piston, the movable seat moves to a second position abutting against the pressure resisting seat through damping fluid hydraulic pressure.

Based on the seventh technical scheme, the device is further provided with an eighth technical scheme, wherein in the eighth technical scheme, the movable seat comprises a sleeve sleeved on the needle valve and a baffle plate which is arranged around the outer wall of the sleeve and is close to the partition wall; the pressing seat comprises a sleeve sleeved on the sleeve and an annular flange arranged around the outer wall of the sleeve, the annular flange is fixedly connected with the body, and the liquid passing channel is formed on the annular flange; two ends of the second elastic piece act on the baffle and the cylinder bottom of the sleeve respectively; the baffle abuts against the partition wall and blocks part of the liquid leakage holes when in the first position; the baffle plate is prevented from abutting the annular flange by the liquid passing channel when in the second position.

Based on technical scheme eight, still be equipped with technical scheme nine, in technical scheme nine, telescopic barrel bottom is equipped with the third perforating hole that supplies the sleeve pipe runs through.

The door comprises a door body, a door frame and the damping mechanism in any one of the first technical scheme to the ninth technical scheme; the seat body is fixedly connected with the door frame, and the rotating shaft is fixedly connected with the door body; when the damping piston moves towards the direction of the pressure reducing piston, the door body moves to a closing position; when the pressure reducing piston moves towards the direction of the damping piston, the door body moves to the opening position.

As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art:

1. in the first technical scheme, when the rotating shaft rotates around the second direction, the second direction can be clockwise or anticlockwise, the cam of the rotating shaft abuts against the damping piston and pushes the damping piston to move towards the decompression piston along the first direction, the damping piston pushes damping liquid to flow towards the decompression piston, the damping liquid pushes the decompression piston to move, the first elastic element compresses and stores energy, the needle valve is in threaded fit with the decompression piston adjustably along the first direction, the needle valve moves along with the decompression piston, the needle valve moves towards the direction far away from the damping piston relative to the liquid discharge hole, the area of a gap between the needle valve and the liquid discharge hole is changed due to continuous change of a part penetrating through the liquid discharge hole on the outer diameter of the needle valve, and the liquid discharge speed of the liquid discharge hole is also changed correspondingly; when the rotating shaft rotates around the direction opposite to the second direction, the cam of the rotating shaft does not abut against the damping piston any more, the first elastic piece releases energy, the first elastic piece abuts against the decompression piston to move towards the damping piston along the first direction, the decompression piston pushes damping liquid to move towards the direction of the damping piston, meanwhile, the needle valve moves towards the direction close to the damping piston along with the decompression piston relative to the liquid discharge hole, the area of a gap between the needle valve and the liquid discharge hole is changed, and the liquid discharge speed of the liquid discharge hole is changed correspondingly. In addition, the first technical scheme is characterized in that the position of the needle valve relative to the decompression piston along the first direction can be adjusted through the adjusting rod, the operation is convenient and fast during the adjustment, during the operation, the part of the adjusting rod extending out of the seat body can rotate, the adjusting rod drives the needle valve to rotate due to the slidable rotation stop fit of the adjusting rod and the needle valve, and due to the threaded fit of the needle valve and the decompression piston, the needle valve moves relative to the decompression piston along the first direction, so that the area of a gap between the needle valve and the liquid leakage hole is increased or reduced, and the liquid leakage speed of the liquid leakage hole can be set in advance; if the adjusting rod is adjusted in advance to enable the liquid leakage speed to be higher, no matter the rotating shaft rotates around the second direction or rotates around the direction opposite to the second direction, although the gap area between the needle valve and the liquid leakage hole can still be changed in the rotating process of the rotating shaft, the liquid leakage speed of the liquid leakage hole is still higher compared with the situation that the adjusting rod is not adjusted in advance, therefore, the rotating shaft rotates more smoothly, and the door is opened and closed more easily and smoothly; on the contrary, if the adjusting rod is adjusted in advance to enable the liquid leakage speed to be slow, the resistance when the rotating shaft rotates is large, and the buffering effect of opening and closing the door is better.

2. In the second technical scheme, the part of the outer diameter of the needle valve, which penetrates through the liquid drainage hole, is gradually increased along the direction from the second chamber to the first chamber, namely, when the rotating shaft rotates around the second direction, the part of the needle valve, the outer diameter of which is gradually increased, is gradually matched with the liquid drainage hole, the gap area between the needle valve and the liquid drainage hole is reduced, the liquid drainage speed is low, and when the rotating shaft rotates around the direction opposite to the second direction, the part of the needle valve, the outer diameter of which is gradually decreased, is gradually matched with the liquid drainage hole, the gap area between the needle valve and the liquid drainage hole is increased, and the liquid drainage speed is high; generally speaking, when the axis of rotation rotated around the second direction, the door was closed gradually, and when the axis of rotation rotated around the direction opposite with the second direction, the door was opened gradually to realized closing the door and opened the faster effect of door slowly, more laminating user's use habit. Furthermore, this structural arrangement of the adjustment rod also facilitates the mounting of the damping mechanism.

3. In the third technical scheme, the adjusting piece is arranged so that the adjusting rod can rotate by rotating the adjusting piece to enable the part of the adjusting rod extending out of the seat body to rotate, so that the position of the needle valve relative to the pressure reducing piston along the first direction is adjusted, in practical application, the seat body is generally fixedly connected in a door frame, and the rotating shaft is fixedly connected on a door, so that the arrangement is more convenient for a user to operate; the adjusting rod is provided with the cylindrical gear, the adjusting piece is provided with the face gear meshed with the cylindrical gear, the cylindrical gear and the face gear are simpler to produce and process, the adjusting rod and the base body are not required to be limited along the axial direction of the first direction, the structure of the damping mechanism is simplified, and the installation is simpler.

4. In the fourth technical scheme, the adjusting rod is clamped with the pressure reducing piston along the first direction, so that when the pressure reducing piston moves along the first direction, the adjusting rod can also move along the first direction along with the pressure reducing piston, and the adjusting rod slides along the first direction relative to the base body; the clamping arrangement of the adjusting rod and the pressure reducing piston simplifies the structure of the seat body and is simpler to install.

5. In the fifth technical scheme, the matching of the adjusting rod and the pressure reducing piston is simple, the matching between the adjusting rod and the needle valve is simple, the matching between the needle valve and the pressure reducing piston is simple, the whole structure is simple and practical, and the processing is simple.

6. In the sixth technical scheme, the adjusting piece is matched with the seat body stably and practically.

7. In the seventh technical scheme, when the rotating shaft rotates around the second direction, the movable seat is supported by the second elastic piece to move to the first position where the movable seat abuts against the partition wall and blocks part of the liquid leakage holes, the liquid leakage speed of the liquid leakage holes is further reduced, namely, the speed is lower when the door is closed, and the buffering effect is better; the arrangement of the abutting seat and the arrangement of the second elastic piece enable the moving seat to move to the first position more quickly; when the axis of rotation rotated around the direction opposite with the second direction, moved the second position that the seat was supported to the butt by damping liquid hydraulic motion to the removal seat, the drain hole was not by partial shutoff, and the drain in drain hole is fast to realized closing the door and opened the faster effect at a slow speed.

8. In the eighth technical scheme, when the movable seat moves to the first position, damping liquid flows to a gap between the liquid discharge hole and the needle valve from the gap between the sleeve and the needle valve and then flows into the second chamber through the liquid passing channel, and the flowing speed of the damping liquid is low; when the movable seat moves to the second position, damping liquid flows into a gap between the baffle and the partition wall from a gap between the liquid leakage hole and the needle valve and then flows into the first cavity through the liquid passing channel on the one hand, and flows into a gap between the sleeve and the needle valve from a gap between the liquid leakage hole and the needle valve and then flows into the first cavity through the liquid passing channel on the other hand, so that the flowing speed of the damping liquid is low, and the effect of closing the door and opening the door slowly and quickly is achieved.

9. In the ninth technical scheme, when the movable seat moves to the first position, the sleeve penetrates through the third through hole of the sleeve, the damping liquid flows from the gap between the sleeve and the needle valve to the gap between the liquid discharge hole and the needle valve and then flows into the second chamber, and the flow speed of the damping liquid is low; when the movable seat moves to the second position, damping liquid flows into a gap between the baffle and the partition wall from a gap between the liquid leakage hole and the needle valve and then flows into the first chamber through the liquid passing channel on the one hand, and flows into a gap between the sleeve and the needle valve from a gap between the liquid leakage hole and the needle valve on the other hand, the flowing speed of the damping liquid is low, and therefore the effect that the door is closed and the door is opened slowly is achieved.

10. In the technical scheme, the utility model also provides the door, and the door can adjust the door opening and closing speed and the buffering effect as required due to the adoption of the damping mechanism, can realize the effect of slowly closing the door and quickly opening the door, and is more suitable for the use habit of a user.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an overall schematic diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a body according to an embodiment of the present invention;

FIG. 3 is a partially exploded perspective view of an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a needle valve according to an embodiment of the present invention;

FIG. 5 is a sectional view showing a large gap between the regulating rod and the drain hole when the rotating shaft of the embodiment of the present invention rotates in the direction opposite to the second direction;

FIG. 6 is a sectional view showing a small area of a gap between the regulating lever and the drain hole when the rotating shaft of the embodiment of the present invention is rotated in a direction opposite to the second direction;

FIG. 7 is a sectional view showing a gap between the regulating rod and the drain hole having a large area when the rotating shaft of the embodiment of the present invention rotates in the second direction;

fig. 8 is a sectional view showing a small area of a gap between an adjustment lever and a drain hole when a rotation shaft rotates in a second direction according to an embodiment of the present invention.

Description of the main reference numerals:

a base body 10; a body 11; a first chamber 111; a second chamber 112; a partition wall 113; weep holes 1131; a recess 114; the second through hole 115; a support surface 116; a butting face 117; a pressing base 12; a sleeve 121; an annular flange 122; a liquid passing hole 1221; a third through hole 123; a rotating shaft 20; a cam 21; a damping piston 30; a decompression piston 40; a first through-hole 41; an annular retaining groove 411; a stop collar 412; the ring grooves 42; a needle valve 50; a tapered valve stem 51; a screw head 52; a first mating surface 521; a second mating surface 522; a first thread face 523; second flank 524; an adjustment lever 60; a cylindrical gear 61; a bump 62; a slot 63; an adjusting member 70; a face gear 71; an abutment surface 72; an adjustment section 73; a movable seat 80; a sleeve 81; a baffle 82; a first elastic member 90; and a second elastic member 100.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are presently preferred embodiments of the utility model and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection between the two that does not have a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

Referring to fig. 1 to 8, fig. 1 to 8 show a damping mechanism including a housing 10, a rotation shaft 20, a damping piston 30, a decompression piston 40, a needle valve 50, an adjustment rod 60, an adjustment member 70, a moving housing 80, a first elastic member 90, and a second elastic member 100.

The base 10 includes a body 11 and a pressing base 12, as shown in fig. 2, a damping cavity is provided in the body 11, the damping cavity is provided with a first chamber 111, a second chamber 112 and a liquid discharge hole 1131 located between the first chamber 111 and the second chamber 112 along a first direction, a partition 113 is formed in the body 11, and the liquid discharge hole 1131 is opened on the partition 113. The body 11 further has a groove 114 formed in the inner wall of the first chamber 111 near the partition 113 and opening away from the partition 113. One end of the body 11, which is far away from the first chamber 111, is provided with a second through hole 115 along a third axis perpendicular to the first direction, and the body 11 is further provided with a supporting surface 116 and a propping surface 117 perpendicular to the third axis and departing from each other, wherein the supporting surface 116 and the propping surface 117 are respectively located on end surfaces where ports at two ends of the second through hole 115 are located. In practical applications, the body 11 is formed by detachably fastening a plurality of parts to facilitate the installation of the parts.

As shown in fig. 3 and 5, the pressing base 12 is disposed in the first chamber 111 and is fixedly connected to the body 11, and the pressing base 12 is provided with a liquid passing channel. Specifically, the pressing seat 12 includes a sleeve 121 and an annular flange 122 surrounding the outer wall of the sleeve 121, an opening of the sleeve 121 faces the partition 113, and a bottom of the sleeve 121 is provided with a third through hole 123 coaxial with the liquid leakage hole 1131; the annular flange 122 surrounds the outer wall of the opening of the sleeve 121 and is provided with a plurality of liquid passing holes 1221, the liquid passing holes 1221 form liquid passing channels, the annular flange 122 is fixedly connected with the body 11, and specifically, the annular flange 122 is arranged in the groove 114 and is riveted and fixed with the groove bottom of the groove 114.

The rotating shaft 20 rotates relative to the housing 10 about a first axis perpendicular to the first direction and is provided with a cam 21, the first axis being parallel to the third axis. The cam 21 is of the prior art and has a continuously variable radial length, e.g. a heart-shaped cam, and the shaft 20 is arranged to impart motion to an object abutting the cam 21 during rotation, thereby changing the position of the object in the first direction.

As shown in fig. 5-8, the damping piston 30 is disposed in the first chamber 111 and abuts against the cam 21 of the rotating shaft 20 in the first direction, and the damping piston 30 is disposed on a side of the abutting seat 12 facing away from the partition 113, i.e., the abutting seat 12 is disposed between the partition 113 and the damping piston 30. The outer wall of the damping piston 30 is fitted with a sealing ring to form a seal with the wall of the first chamber 111.

The decompression piston 40 is disposed in the second chamber 112, and receives damping fluid between itself and the damping piston 30. A first through hole 41 coaxial with the liquid drainage hole 1131 is formed in the decompression piston 40 in an extending manner along a first direction, a stepped hole is formed in the inner wall of the first through hole 41, an internal thread is formed in a small hole of the stepped hole, a limit ring 412 is screwed in a large hole of the stepped hole, and the limit ring 412 is matched with a hole shoulder of the stepped hole to form an annular limit groove 411. In practical application, the outer wall of the pressure reducing piston 40 is protruded with a ring groove 42, and a sealing ring is sleeved in the ring groove 42 to form a seal with the cavity wall of the second chamber 112.

The needle valve 50 is screw-engaged with the pressure reducing piston 40 in a first direction position adjustably and penetrates through the drain hole 1131, and a portion of the outer diameter thereof penetrating through the drain hole 1131 is continuously varied. As shown in fig. 4, the needle valve 50 includes a tapered valve rod 51 and a screw head 52 fixed to an end of the tapered valve rod 51, the screw head 52 is in threaded engagement with the pressure reducing piston 40, a first engagement surface 521 and a second engagement surface 522 extending in the first direction are relatively arranged on the screw head 52, a first threaded surface 523 and a second threaded surface 524 are also relatively arranged on the screw head 52, and the first engagement surface 521, the first threaded surface 523, the second engagement surface 522 and the second threaded surface 524 enclose a side wall of the screw head 52. The tapered valve rod 51 penetrates the drain hole 1131, and the outer diameter of the tapered valve rod 51 gradually increases in the direction from the second chamber 112 to the first chamber 111, and gradually increases from left to right in fig. 4.

The adjusting rod 60 rotates relative to the seat body 10 around a second axis parallel to the first direction and slides relative to the seat body 10 along the first direction, one end of the adjusting rod is slidably engaged with the needle valve 50 along the first direction in a rotation-stopping manner, the other end of the adjusting rod penetrates through the seat body 10 along the first direction and is provided with a cylindrical gear 61, and the cylindrical gear 61 is detachably and fixedly connected to the adjusting rod 60. Specifically, the adjusting rod 60 is provided with a protrusion 62 inserted into the first through hole 41 and clamped with the annular limiting groove 411 along the first direction, so that the adjusting rod 60 can move along the first direction along with the pressure reducing piston 40, thereby realizing that the adjusting rod 60 slides along the first direction relative to the seat body 10, simplifying the structure of the seat body 10 and simplifying the installation. The adjusting rod 60 is further provided with a slot 63 which is inserted into the first through hole 41 and extends along the first direction corresponding to the position of the internal thread; the needle valve 50 is inserted into the insertion groove 63 and slides along a first direction relative to the insertion groove 63, the needle valve 50 is further provided with an external thread which extends out of the insertion groove 63 and is in threaded fit with the internal thread of the first through hole 41, specifically, the first mating surface 521 and the second mating surface 522 of the screw head 52 are both inserted into the insertion groove 63 and can slide along the first direction relative to the insertion groove 63, and the first thread surface 523 and the second thread surface 524 of the screw head 52 extend out of the insertion groove 63 and are provided with an external thread which is in threaded fit with the internal thread.

The adjusting member 70 rotates around a third axis relative to the seat body 10 and is provided with a face gear 71 meshed with the cylindrical gear 61, and the adjusting member 70 is axially limited relative to the seat body 10. Specifically, the adjusting member 70 is provided with an abutting surface 72 for abutting against the supporting surface 116 at one end, and is provided with a face gear 71 at the other end, the face gear 71 is further configured to abut against an abutting surface 117, so that the adjusting member 70 is axially limited relative to the seat body 10, and the face gear 71 is detachably and fixedly connected to the adjusting member 70. The adjusting member 70 penetrates through the second through hole 115, and an adjusting portion 73 is further disposed at an end of the adjusting member 70 away from the face gear 71, the adjusting portion 73 is configured to drive the adjusting member 70 to rotate, and the adjusting member 70 and the seat body 10 are firmly and practically matched. In practical applications, the adjusting portion 73 is provided with a hexagonal hole, and the adjusting portion 73 can be driven to rotate by a tool such as a socket wrench, so as to drive the adjusting member 70 to rotate. The cylindrical gear 61 and the face gear 71 are simpler to produce and process, the adjustment rod 60 and the seat body 10 do not need to be limited axially along the first direction, the structure of the damping mechanism is simplified, and the installation is simpler.

The matching of the adjusting rod 60 and the pressure reducing piston 40 is simple, the matching between the adjusting rod 60 and the needle valve 50 is simple, the matching between the needle valve 50 and the pressure reducing piston 40 is simple, the whole structure is simple and practical, and the processing is simple.

The first elastic element 90 is disposed in the second chamber 112 and supports a side of the pressure reducing piston 40 away from the damping piston 30, and specifically, the first elastic element 90 is a first return spring, which is sleeved on the pressure reducing piston 40, and two ends of the first elastic element respectively support against the groove wall of the body 11 and the groove 42 away from the damping piston 30.

The movable seat 80 is disposed between the abutting seat 12 and the partition wall 113, the movable seat 80 includes a sleeve 81 sleeved on the needle valve 50 and a baffle 82 surrounding the outer wall of the sleeve 81 and close to the partition wall 113, the baffle 82 surrounds one end of the sleeve 81, the baffle 82 is square, the sleeve 81 is inserted into the sleeve 121 of the abutting seat 12 and penetrates through the bottom of the sleeve 121, and the baffle 82 moves back and forth between the partition wall 113 and the annular flange 122.

The second elastic element 100 is interposed between the abutment seat 12 and the mobile seat 80. More specifically, the second elastic element 100 is a second return spring, which is sleeved outside the sleeve 121, and two ends of the second return spring respectively act on the baffle 82 and the bottom of the sleeve 121.

In this embodiment, the movable seat 80 moves between the first position and the second position, and when the damping piston 30 moves toward the decompression piston 40, the movable seat 80 is supported by the second elastic member 100 to move to the first position where it abuts against the partition wall 113 and blocks part of the liquid leakage holes 1131, specifically, the baffle 82 abuts against the partition wall 113 and blocks part of the liquid leakage holes 1131; when the pressure reducing piston 40 moves in the direction of the damping piston 30, the movable seat 80 is hydraulically moved by the damping fluid to the second position abutting against the pressure seat 12, specifically, the baffle 82 is retracted from each fluid passing hole 1221 and abuts against the annular flange 122.

The installation process is as follows:

as shown in fig. 5-8, the adjusting member 70 without the face gear 71 is passed through the second through hole 115 from top to bottom, and the abutting surface 72 abuts against the supporting surface 116, and then the face gear 71 is mounted at one end of the adjusting member 70 close to the abutting surface 117 and the face gear 71 abuts against the abutting surface 117;

inserting the threaded head 52 of the needle valve 50 into the slot 63 of the adjusting rod 60 which is not fixedly connected with the cylindrical gear 61 and extending the first threaded surface 523 and the second threaded surface 524 out of the slot 63, then inserting the connected adjusting rod 60 and the needle valve 50 into the pressure reducing piston 40 which is not provided with the limiting ring 411 from the left end, matching the first threaded surface 523 and the second threaded surface 524 of the threaded head 52 with the internal threads of the pressure reducing piston 40, extending the adjusting rod 60 out of the pressure reducing piston 40 from the left end, extending the tapered valve rod 51 out of the pressure reducing piston 40 from the right end, sleeving the limiting ring 411 into the adjusting rod 60 and screwed into the first through hole 41, and axially limiting the adjusting rod 60 and the pressure reducing piston 40 along the first direction; sleeving the first elastic member 90 on the outer wall of the left end of the decompression piston 40, enabling the right end of the first elastic member 90 to be abutted against the groove wall of the left end of the ring groove 42, and installing the assembled assembly into a second chamber 112 formed by detachably and fixedly connecting a plurality of parts; the tapered valve rod 51 is inserted into the liquid leakage hole 1131, the first elastic element 90 abuts against the end wall of the body 11 close to one end of the second through hole 115, meanwhile, the adjusting rod 60 extends out of the body 11, the cylindrical gear 61 is fixedly connected to the outer end of the adjusting rod 60, and the cylindrical gear 61 is meshed with the face gear 71;

sleeving a sleeve 81 of the moving seat 80 outside the tapered valve rod 51, sleeving a second elastic element 100 on the sleeve 81, sleeving a sleeve 121 of the abutting seat 12 on the sleeve 81, enabling the sleeve 81 to penetrate through the bottom of the sleeve 121, and fixedly connecting an annular flange 122 of the abutting seat 12 to the groove 114 through a rivet, wherein two ends of the second elastic element 100 respectively act on the bottom of the sleeve 121 and the baffle 82;

then, the damping piston 30 and other parts are installed in the first chamber 111 formed by detachably fixing a plurality of portions, and the rotating shaft 20 is installed in the first chamber 111 with the cam 21 abutting against one end of the damping piston 30. The installation of the pressure reducing piston 40 and the damping piston 30 is prior art and will not be described in detail here. The working principle is as follows:

as shown in fig. 7-8, when the rotating shaft 20 rotates around the second direction, which is generally the case of closing a door, the second direction may be clockwise or counterclockwise, the cam 21 of the rotating shaft 20 abuts against the damping piston 30 and pushes the damping piston 30 to move toward the pressure reducing piston 40 along the first direction, the damping piston 30 pushes the damping fluid to flow toward the pressure reducing piston 40, i.e., the damping fluid flows toward the left, the damping fluid pushes the pressure reducing piston 40 to move toward the left, the first elastic member 90 compresses and stores energy, the needle valve 50 moves toward the left along with the pressure reducing piston 40 due to the adjustable threaded engagement of the needle valve 50 with the pressure reducing piston 40 along the first direction, the area of the gap between the needle valve 50 and the liquid discharging hole 1131 gradually decreases due to the gradually increasing outer diameter of the tapered valve rod 51 from left to right, and the liquid discharging speed of the liquid discharging hole 1131 decreases; on the other hand, when the damping piston 30 moves leftward, the baffle 82 of the movable seat 80 is pushed by the second elastic member 100 to move to the first position where it abuts against the partition wall 113 and closes off part of the liquid drain hole 1131, and the sleeve 81 passes through the third through hole 123 of the sleeve 121, so that the damping liquid can flow only from the gap between the sleeve 81 and the tapered valve rod 51 to the gap between the liquid drain hole 1131 and the tapered valve rod 51 and further to the second chamber 112, and the flow rate of the damping liquid is slow.

As shown in fig. 5-6, when the rotating shaft 20 rotates in the direction opposite to the second direction, generally in the case of opening the door, the cam 21 of the rotating shaft 20 no longer abuts against the damping piston 30, the first elastic member 90 releases energy, the first elastic member 90 abuts against the pressure-reducing piston 40 to move towards the damping piston 30 in the first direction, the pressure-reducing piston 40 pushes the damping fluid to move towards the damping piston 30, i.e. the damping fluid flows towards the right, and at the same time, the needle valve 50 moves towards the right along with the pressure-reducing piston 40, because the outer diameter of the tapered valve rod 51 gradually increases from left to right, the area of the gap between the tapered valve rod 51 and the liquid-discharging hole 1131 gradually increases, and the liquid-discharging speed of the liquid-discharging hole 1131 becomes fast; on the other hand, when the damping piston 30 moves rightward, the damper 82 of the movable seat 80 is hydraulically moved to the second position abutting against the annular flange 122 by the damping fluid, and the damping fluid flows into the gap between the damper 82 and the partition 113 from the gap between the drain hole 1131 and the needle 50 and flows into the first chamber 111 through the fluid passage, while the damping fluid flows into the gap between the sleeve 81 and the needle 50 from the gap between the drain hole 1131 and the needle 50, and the drain speed of the drain hole 1131 is further increased.

Therefore, the damping mechanism of the present embodiment can achieve different damping effects corresponding to different liquid discharge speeds when the rotating shaft 20 rotates in different directions. When being applied to on the door, only make axis of rotation 20 correspond the direction of closing the door when rotating around the second direction, axis of rotation 20 corresponds the direction of opening the door when rotating around the direction opposite with the second direction, can be so that realize closing the door slow and the fast effect of opening the door when applying to this damping mechanism on the door to more laminating user's use is accustomed to.

The present embodiment is notable in that the position of the needle valve 50 along the first direction relative to the pressure reducing piston 40 can be adjusted by driving the adjusting member 70 to rotate, in practical applications, the seat body 10 is generally fixed in the door frame, and the rotating shaft 20 is fixed on the door, which is more convenient for the user to operate.

As shown in fig. 5-8, when the position of the needle valve 50 relative to the decompression piston 40 in the first direction needs to be adjusted, the adjusting member 70 can be driven to rotate by an internal hexagonal wrench, and the adjusting rod 60 rotates around the second axis due to the fact that the face gear 71 on the adjusting member 70 is meshed with the cylindrical gear 61 of the adjusting rod 60; because the adjusting rod 60 is slidably engaged with the needle valve 50 in a rotation-stopping manner, the adjusting rod 60 drives the needle valve 50 to rotate, and because the needle valve 50 is in threaded engagement with the pressure reducing piston 40, the needle valve 50 moves along a first direction relative to the pressure reducing piston 40, so that the area of a gap between the tapered valve rod 51 and the liquid leakage hole 1131 is increased or decreased, and the liquid leakage speed of the liquid leakage hole 1131 can be set in advance; if the adjusting rod 60 is adjusted in advance to make the liquid leakage speed faster, as shown in fig. 5 and 7, no matter whether the rotating shaft 20 rotates around the second direction or around the direction opposite to the second direction, although the gap area between the tapered valve rod 51 and the liquid leakage hole 1131 still changes during the rotation of the rotating shaft 20, the liquid leakage speed of the liquid leakage hole 1131 is still faster compared with the case that the adjustment is not performed in advance, therefore, the rotating shaft 20 rotates more smoothly, so that the door opening and closing speed is increased, and the door opening and closing are easier and smoother; on the contrary, as shown in fig. 6 and 8, if the adjusting rod 60 is adjusted in advance to make the liquid leakage speed slower, the resistance when the rotating shaft 20 rotates is larger, and the buffering effect of opening and closing the door is better.

The utility model also discloses a door (not shown in the figure), which comprises a door body, a door frame and the damping mechanism in the embodiment; the seat body 10 is fixedly connected with the door frame, and the rotating shaft 20 is fixedly connected with the door body; when the damping piston 30 moves towards the decompression piston 40, the door body moves to a closing position; when the decompression piston 40 moves in the direction of the damping piston 30, the door body moves to the open position. Therefore, the door can adjust the door opening and closing speed and the buffering effect as required due to the adoption of the damping mechanism, can realize the effect of slow door closing and fast door opening, and is more suitable for the use habit of users.

The description of the above specification and examples is intended to be illustrative of the scope of the present invention and is not intended to be limiting. Modifications, equivalents and other improvements which may occur to those skilled in the art and which may be made to the embodiments of the utility model or portions thereof through a reasonable analysis, inference or limited experimentation, in light of the common general knowledge, the common general knowledge in the art and/or the prior art, are intended to be within the scope of the utility model.

Claims

1. A damping mechanism is characterized by comprising

The damping device comprises a base body, a first damping device and a second damping device, wherein a damping cavity is arranged in the base body, and a first cavity, a second cavity and a liquid leakage hole positioned between the first cavity and the second cavity are formed in the damping cavity along a first direction;

the rotating shaft rotates around a first axis perpendicular to the first direction relative to the seat body and is provided with a cam;

a damping piston disposed in the first chamber and abutting against the cam of the rotating shaft in a first direction;

the pressure reducing piston is arranged in the second chamber, and damping liquid is contained between the pressure reducing piston and the damping piston;

the needle valve is in threaded fit with the pressure reducing piston in an adjustable mode along a first direction position and penetrates through the liquid leakage hole, and the part of the outer diameter of the needle valve, which penetrates through the liquid leakage hole, continuously changes;

the adjusting rod rotates around a second axis parallel to the first direction relative to the seat body, one end of the adjusting rod is in sliding rotation-stopping fit with the needle valve along the first direction, and the other end of the adjusting rod penetrates through the seat body along the first direction; and

and the first elastic piece is arranged in the second chamber and supports one side of the pressure reducing piston away from the damping piston.

2. A damping mechanism according to claim 1, wherein the portion of the outer diameter of the needle valve extending through the bleed hole increases in the direction from the second chamber to the first chamber.

3. A damping mechanism according to claim 2, further comprising an adjustment member; one end of the adjusting rod, which extends out of the seat body, is provided with a cylindrical gear, and the adjusting rod slides along a first direction relative to the seat body; the adjusting piece rotates around a third axis parallel to the first axis relative to the seat body and is provided with a face gear meshed with the cylindrical gear; the adjusting piece is axially limited relative to the seat body.

4. A damping mechanism according to claim 3, wherein the pressure-reducing piston has a first through hole extending in a first direction and coaxial with the liquid discharge hole, the inner wall of the first through hole has an annular limiting groove, and the adjusting rod has a projection inserted into the first through hole and engaged with the annular limiting groove in the first direction.

5. The damper mechanism according to claim 4, wherein said first through hole is further provided with an internal thread on an inner wall thereof; the adjusting rod is also provided with a slot which is inserted into the first through hole and extends along the first direction corresponding to the position of the internal thread; the needle valve is inserted slot and relative slot slide along the first direction, the needle valve still be equipped with stretch out the slot and with internal thread screw-thread fit's external screw thread.

6. A damping mechanism according to claim 5, wherein the housing is provided with a second through-hole along a third axis, the housing further being provided with a support surface and a butting surface perpendicular to the third axis and facing away from each other; the adjusting piece penetrates through the second through hole, and an adjusting part is arranged at one end, far away from the face gear, of the adjusting piece, and the adjusting part is configured to be suitable for driving the adjusting piece to rotate; the adjusting piece is also provided with an abutting surface for abutting against the supporting surface; the face gear is further configured to abut against the abutting face.

7. A damper mechanism according to any one of claims 2-6, further comprising a movable seat and a second resilient member; the seat body comprises a body and a pressing seat; the damping cavity is formed in the body, a partition wall is formed in the body, and the liquid discharge hole is formed in the partition wall; the pressing seat is arranged between the partition wall and the damping piston and is fixedly connected with the body, and a liquid passing channel is arranged on the pressing seat;

the movable seat is arranged between the abutting seat and the partition wall;

two ends of the second elastic piece respectively act on the movable seat and the pressing seat;

the movable seat moves between a first position and a second position;

when the damping piston moves towards the direction of the pressure reducing piston, the moving seat is jacked by the second elastic piece to move to a first position where the moving seat is abutted against the partition wall and part of the liquid leakage holes are blocked;

when the pressure reducing piston moves towards the direction of the damping piston, the movable seat moves to a second position abutting against the pressure resisting seat through damping fluid hydraulic pressure.

8. The damping mechanism as claimed in claim 7, wherein the movable seat includes a sleeve disposed around the needle valve and a baffle surrounding an outer wall of the sleeve and adjacent to the partition wall; the pressing seat comprises a sleeve sleeved on the sleeve and an annular flange arranged around the outer wall of the sleeve, the annular flange is fixedly connected with the body, and the liquid passing channel is formed on the annular flange; two ends of the second elastic piece act on the baffle and the cylinder bottom of the sleeve respectively;

the baffle abuts against the partition wall and blocks part of the liquid leakage holes when in the first position; the baffle plate is prevented from abutting the annular flange by the liquid passing channel when in the second position.

9. A damping mechanism according to claim 8, wherein the bottom of the sleeve is provided with a third through-hole for the sleeve to pass through.

10. A door comprising a door body, a door frame and a damping mechanism as claimed in any one of claims 1 to 9; the seat body is fixedly connected with the door frame, and the rotating shaft is fixedly connected with the door body; when the damping piston moves towards the direction of the pressure reducing piston, the door body moves to a closing position; when the pressure reducing piston moves towards the direction of the damping piston, the door body moves to the opening position.