CN217106616U - Damping module with adjustable damping force and hinge thereof - Google Patents

Abstract

The utility model relates to a damping module and hinge with adjustable damping force, damping module include piston rod and the inside cylinder body of placing damping oil, and the slip is provided with the piston in the cylinder body, and outside piston rod one end stretched out the cylinder body, the other end was located the cylinder body, and was connected with the piston cooperation to slide through the piston and stretch out and draw back on the cylinder body, its characterized in that: an oil passing needle is arranged in the cylinder body; the piston rod is sleeved outside the oil passing needle, and an oil passing channel is formed between the piston rod and the oil passing needle; the piston is provided with an oil passing hole and an oil blocking piece; the oil blocking piece is movably arranged on the piston and opens or seals the oil passing hole when moving. Above-mentioned structure can realize that the piston rod slides fast and stretches out the cylinder body, slides at a slow speed and contracts into the cylinder body to when being applied to the hinge, no matter be the hinge with the big movable body coupling of self weight, perhaps the user is big because of closing the strength when using, the unimpeded smooth and easy opening and the damping that can both be real realization movable body do not have the collision and close, experience with the life of improvement product and user's use.

Description

Damping module with adjustable damping force and hinge thereof

Technical Field

The utility model relates to a damping module with adjustable damping force and hinge thereof.

Background

Chinese patent document No. CN210768278U discloses a hinge with buffering function in 16.6.2020, which comprises a left leaf and a right leaf, wherein the two ends of the left leaf are integrally formed with a sleeve for the rotation of the connecting shaft, the right leaf is integrally formed with a connecting shaft which is symmetrically arranged and is matched and rotated with the sleeve, the middle of the left leaf is integrally formed with a middle limiting shaft sleeve, the upper and lower parts of the middle limiting shaft sleeve are respectively abutted to corresponding fasteners, the inside of the sleeve is provided with a unidirectional rotary hydraulic damper, and the two ends of each fastener are fixedly connected with the end of the corresponding connecting shaft. When the one-way rotation type hydraulic damper of above-mentioned structure produced damping force at work, its inside damping oil flow volume was unchangeable, if hinge connection's activity body dead weight is too big, or when closing the dynamics too big, collision problem appeared very easily, influenced the life of product and user's use and experienced, also can't realize the quick, slow result of use of closing the opening speed of activity body simultaneously. Therefore, further improvements are necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a damping module and hinge with adjustable damping force to overcome the weak point among the prior art.

Damping module with adjustable damping force according to this purpose design, including piston rod and the inside cylinder body of placing damping oil, the slip is provided with the piston in the cylinder body, outside piston rod one end stretched out the cylinder body, the other end was located the cylinder body, just was connected with the piston cooperation to slide through the piston and stretch out and draw back on the cylinder body, its characterized in that: an oil passing needle is arranged in the cylinder body; the piston rod is sleeved outside the oil passing needle, and an oil passing channel is formed between the piston rod and the oil passing needle; the piston is provided with an oil passing hole and an oil blocking piece; the oil blocking piece is movably arranged on the piston and opens or seals the oil passing hole when moving.

A groove is formed in the piston; the oil blocking piece is movably arranged in the groove; the oil passing hole is arranged on the piston along the axial direction of the piston rod and communicated with the groove.

The oil blocking piece opens the oil passing hole when the piston rod slides towards the opposite direction of the cylinder body.

The oil blocking piece seals the oil passing hole when the piston rod slides towards the direction of the cylinder body.

The center of the end part of the piston rod, which is positioned in the cylinder body, is provided with a sleeving hole, and the sleeving hole is arranged along the axial direction of the piston rod; the oil passing needle is telescopically sleeved in the sleeving hole when the piston rod slides; the piston rod side wall is also provided with a radial oil passing port which is communicated with the sleeving hole.

The oil passage is formed between the sleeve joint hole and the oil passage needle and is communicated with the radial oil passage.

The upper part of the side wall of the oil passing needle is provided with a convex sleeving position, and the lower part of the side wall of the oil passing needle is provided with a concave sleeving position; the convex socket joint position and the concave socket joint position form angular transition or arc transition.

The oil passing amount of the oil passing channel formed between the convex socket joint position and the socket joint hole is less than that of the oil passing channel formed between the concave socket joint position and the socket joint hole.

Cylinder body one end is provided with the oil needle regulation hole, and is provided with the oil needle regulating part through the oil needle regulation hole, oil needle regulating part upper end center department and oil needle lower part fixed connection cross, the outside is provided with the regulation sealing member, and rotates through adjusting the sealing member sealed and sets up on the oil needle regulation hole, the oil needle regulating part of crossing drives the flexible on cup jointing the hole of oil needle adjustable when rotating to finally realize the flexible speed control of slip of piston rod.

The other end of the cylinder body is provided with an open mouth, and an oil seal piece and a cylinder body end cover are sequentially positioned on the open mouth; the periphery of the oil seal piece is sealed and acts on the inner wall of the cylinder body, and the end cover of the cylinder body is covered on the open hole and positioned to act on the oil seal piece; the piston rod is inserted on the oil seal piece and the cylinder end cover in a sealing way.

When the piston rod slides towards the opposite direction of the cylinder body, the oil blocking piece moves in the groove and opens the oil passing hole, the damping oil flows in the cylinder body and flows from one side of the piston to the other side of the piston through the radial oil passing hole, the concave sleeve joint position, the convex sleeve joint position and the oil passing hole, wherein the flow rate of the damping oil is reduced when the damping oil flows from the concave sleeve joint position to the convex sleeve joint position through the radial oil passing hole, and finally the piston rod slides rapidly to stretch out of the cylinder body and is slowed down gradually when approaching to stretch out of the terminal position.

When the piston rod slided towards the direction of cylinder body, the oil blocking piece activity was in the recess, and sealed the oilhole, damping oil flows in the cylinder body, and cup joint the position through the convex from the opposite side of piston, the concave cup joints the position, radially cross one side of oilhole flow direction piston, wherein, damping oil cup joints the position from the convex and flows to the concave cup and cup joint the position, and flow velocity grow when radially crossing the hydraulic fluid port and flow, with finally realize the piston rod at a slow speed slip indentation cylinder body, and the speed is the quickening gradually when being close indentation terminal position, and make damping module produce buffering damping force.

The piston rod is also provided with a positioning step, and a positioning sealing element is sleeved on the positioning step; the piston is positioned on the positioning step in a sealing mode through the positioning sealing piece, the piston sealing piece is sleeved on the periphery of the piston, and the piston slides in the cylinder body in a sealing mode through the piston sealing piece.

A hinge, its characterized in that: the damping module with adjustable damping force is included; the hinge comprises a first leaf plate, a second leaf plate, a rotating shaft and a sleeve; the cylinder body is fixedly arranged in the sleeve, and at least part of the outer end of the cylinder body extends out of the sleeve; the outer end of the rotating shaft extends out of the sleeve, the inner end of the rotating shaft is provided with a rotating shaft bearing and is rotatably arranged in the sleeve through the rotating shaft bearing, and a lead screw transmission pair is arranged to be in driving connection with the piston rod.

The first page plate is provided with a first sleeve; the outer end of the rotating shaft is provided with a plane part and is sleeved with a first pattern gland wheel, the peripheral part of the first pattern gland wheel is fixedly sleeved in the first sleeve through a pattern, and a notch part and a plane matching part are arranged in a central hole of the first pattern gland wheel; first decorative pattern gland wheel centre bore cover sets up in the pivot outer end, and prevents through plane cooperation portion and plane portion to spin the cooperation, is provided with the key of inserting between breach portion and the pivot, inserts the key and is located plane cooperation portion opposite side to establish in breach portion after first decorative pattern gland wheel, pivot cover are established, in order to realize preventing between first page board and the pivot that spin fixed connection.

The first page plate is also provided with a second sleeve; the outer end of the cylinder body is provided with a cylinder body needle roller bearing; the second sleeve is sleeved outside the sleeve in a clearance manner, sleeved outside the cylinder body needle roller bearing and rotated at the outer ends of the sleeve and the cylinder body through the cylinder body needle roller bearing.

A third sleeve is arranged on the second page plate; the outer wall of the sleeve is provided with sleeve patterns; the third sleeve is fixedly sleeved outside the sleeve through sleeve patterns to realize the fixed connection between the second page plate and the sleeve, and the third sleeve is positioned between the first sleeve and the second sleeve when sleeved.

The screw rod transmission pair comprises a spiral rotor, a connecting shaft and a wear-resistant sleeve, wherein the spiral rotor is rotationally and linearly arranged in the sleeve in a sliding manner and is in driving connection with the rotating shaft and is linearly matched with the rotating shaft in a sliding manner; the periphery of the spiral rotor is provided with a spiral groove; the connecting shaft is transversely arranged in the sleeve, the wear-resistant sleeve is sleeved outside the connecting shaft, and the outer surface of the wear-resistant sleeve is in sliding fit with the spiral groove.

The end part of the piston rod, which is positioned in the cylinder body, is provided with a pin shaft, and the pin shaft penetrates through the piston rod and the spiral rotor respectively to realize the driving connection between the piston rod and the spiral rotor.

The spiral rotor is provided with a guide hole, the inner wall of the guide hole is provided with an inner guide insection, and the inner guide insection extends along the axial direction of the spiral rotor; the inner end of the rotating shaft is provided with an outer guide insection which extends along the axis direction of the rotating shaft, the inner end of the rotating shaft is inserted into the guide hole, and the inner guide insection is meshed with the outer guide insection and is in linear sliding fit with the outer guide insection.

The inner end of the rotating shaft is sleeved with an elastic piece, the center of the outer end of the rotating shaft is provided with an elastic adjusting hole, and the lateral part of the rotating shaft is provided with a transverse through groove; the transverse through groove is arranged along the axis direction of the rotating shaft and is transversely provided with the rotating shaft in a penetrating way, a movable shaft is arranged on the transverse through groove, and the movable shaft and the elastic part have elastic action; the end part of the elastic adjusting hole is communicated with the transverse through groove, and an elastic adjusting piece is rotatably arranged on the elastic adjusting hole, the movable shaft is driven to slide up and down on the transverse through groove along the axis direction of the rotating shaft when the elastic adjusting piece rotates, and the movable shaft adjusts the elastic force of the elastic adjusting piece when sliding up and down.

The rest part of the periphery of the first pattern gland wheel extends out of the first sleeve and is sleeved with a first end cover, the center of the first end cover is provided with an elastic adjustment avoiding port corresponding to the elastic adjusting piece, and a rubber plug is arranged on the elastic adjustment avoiding port; still be equipped with the second flower line gland wheel in the second sleeve, second flower line gland wheel centre bore clearance cover is established in the cylinder body outer end, and peripheral part is fixed to be established in the second sleeve through the decorative pattern, and the peripheral other parts of second flower line gland wheel stretch out outside the second sleeve, and the cover is equipped with the second end cover, and second end cover center department corresponds the oil needle regulating part of crossing and is provided with the oil needle and adjusts and dodge the mouth.

And sleeve bearings are arranged between the third sleeve and the first sleeve and between the third sleeve and the second sleeve respectively, and are in running fit with each other through the sleeve bearings respectively.

Through the improvement of the structure, the damping oil in the cylinder body flows by utilizing the oil passing channel between the piston rod and the oil passing needle and the oil passing hole arranged on the piston; when the piston rod slides towards the opposite direction of the cylinder body, the oil blocking piece can open the oil passing hole, damping oil can flow on the oil passing channel and the oil passing hole simultaneously, so that the piston rod can slide quickly to extend out of the cylinder body, when the piston rod slides towards the direction of the cylinder body, the oil blocking piece can seal the oil passing hole, the damping oil can only flow on the oil passing channel, so that the flow of the damping oil is reduced, so that the piston rod slides slowly to retract into the cylinder body, the damping module generates buffering damping force, and the damping module is applied to the hinge, no matter the hinge is connected with a movable body with large self weight, or a user is large in closing force during use, smooth opening and damping non-collision closing of the movable body can be really realized, and the service life of a product and the use experience of the user are improved.

Drawings

Fig. 1 is a schematic view of an assembly structure according to an embodiment of the present invention.

Fig. 2 is a schematic view of an assembly cross-sectional structure according to an embodiment of the present invention.

Fig. 3 and 4 are schematic exploded structural diagrams according to an embodiment of the present invention.

Fig. 5 is an exploded schematic view of an embodiment of the present invention without the first and second leaf plates.

Fig. 6 and 7 are schematic exploded structural diagrams of a damping module according to an embodiment of the present invention.

Fig. 8-10 are schematic views illustrating an opening process of the damping module according to an embodiment of the present invention.

Fig. 11-13 are schematic diagrams illustrating a closing process of the damping module according to an embodiment of the present invention.

Detailed Description

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

Referring to fig. 1-13, this damping module with adjustable damping force, including piston rod 1 and the inside cylinder body 2 of placing damping oil, it is provided with piston 3 to slide in cylinder body 2, outside piston rod 1 one end stretches out cylinder body 2, the other end is located cylinder body 2, and is connected with piston 3 cooperation to slide through piston 3 and stretch out and draw back on cylinder body 2, its characterized in that: an oil needle 4 is arranged in the cylinder body 2; the piston rod 1 is sleeved outside the oil passing needle 4, and an oil passing channel 5 is formed between the piston rod and the oil passing needle; the piston 3 is provided with an oil passing hole 6 and an oil baffle 7; the oil retaining piece 7 is movably arranged on the piston 3 and opens or seals the oil passing hole 6 when moving.

Damping oil in the cylinder body 2 flows through an oil passing channel 5 between the piston rod 1 and the oil passing needle 4 and an oil passing hole 6 arranged on the piston 3; when the piston rod 1 slides in the opposite direction of the cylinder body 2, the oil blocking piece 7 can open the oil passing hole 6, damping oil can flow on the oil passing channel 5 and the oil passing hole 6 simultaneously, so that the piston rod 1 slides out of the cylinder body 2 quickly, when the piston rod 1 slides in the direction of the cylinder body 2, the oil blocking piece 7 can seal the oil passing hole 6, the damping oil can only flow on the oil passing channel 5, so that the flow of the damping oil is reduced, so that the piston rod 1 slides in the cylinder body 2 slowly, the damping module generates buffering damping force, and when the damping module is applied to a hinge, no matter the hinge is connected with a movable body with large self weight, or a user is large in closing force during use, unhindered and smooth opening and damping and collision-free closing of the movable body can be really realized, and the service life of a product is prolonged and the use experience of the user is improved.

Specifically, the piston 3 is provided with a groove 8; the oil baffle 7 is movably arranged in the groove 8; the oil passing hole 6 is arranged on the piston 3 along the axial direction of the piston rod 1 and is communicated with the groove 8.

The oil stopper 7 opens the oil passing hole 6 when the piston rod 1 slides in the opposite direction of the cylinder 2.

The oil retainer 7 seals the oil passing hole 6 when the piston rod 1 slides in the direction of the cylinder 2.

A sleeve hole 9 is formed in the center of the end part of the piston rod 1, which is positioned in the cylinder body 2, and the sleeve hole 9 is formed along the axial direction of the piston rod 1; the oil passing needle 4 is telescopically sleeved in the sleeve hole 9 when the piston rod 1 slides; the side wall of the piston rod 1 is also provided with a radial oil passing port 10, and the radial oil passing port 10 is communicated with the sleeving hole 9.

The oil passing channel 5 is formed between the sleeve hole 9 and the oil passing needle 4 and is communicated with the radial oil passing port 10.

The upper part of the side wall of the oil passing needle 4 is provided with a convex socket joint position 11, and the lower part is provided with a concave socket joint position 12; convex cup joints between position 11 and the concave cup joints between position 12 and is the angular transition or the arc transition, and the convex cup joints between position 11 and the concave cup joints between position 12 of this embodiment is the angular transition, can improve damping oil's smooth and easy nature that flows, reduces the jam problem of damping oil when flowing.

The oil passing amount of the oil passing channel 5 formed between the convex sleeve joint 11 and the sleeve joint hole 9 is less than that of the oil passing channel 5 formed between the concave sleeve joint 12 and the sleeve joint hole 9.

Further, the diameter of the convex socket 11 is larger than that of the concave socket 12, and the convex socket 11 can be intermittently sleeved in the socket hole 9. The oil passing amount of the damping oil is small when the damping oil flows between the radial oil passing port 10 and the convex socket joint 11 (because the gap between the convex socket joint 11 and the socket joint hole 9 is small), and the oil passing amount of the damping oil is large when the damping oil flows between the radial oil passing port 10 and the concave socket joint 12 (because the diameter of the concave socket joint 12 is smaller than that of the convex socket joint 11, more damping oil can flow).

In order to adjust the flowing position of the damping oil between the radial oil passing port 10, the convex sleeve joint position 11 and the concave sleeve joint position 12, one end of the cylinder body 2 is provided with an oil passing needle adjusting hole 13, an oil passing needle adjusting piece 14 is arranged through the oil passing needle adjusting hole 13, the center of the upper end of the oil passing needle adjusting piece 14 is fixedly connected with the lower part of the oil passing needle 4, an adjusting sealing piece 15 is arranged on the outer side of the cylinder body, the oil passing needle adjusting piece 14 is arranged on the oil passing needle adjusting hole 13 in a sealing mode through the adjusting sealing piece 15, the oil passing needle adjusting piece 14 drives the oil passing needle 4 to be adjustably stretched on the sleeve joint hole 9 when rotating, and finally the sliding stretching speed of the piston rod 1 is adjusted.

The adjusting principle is as follows: as shown in any state of fig. 8-13, when the needle 4 is adjusted upwards, the position where the damping oil flows on the concave socket 12 increases, the position where the damping oil flows on the convex socket 11 decreases, and the sliding and extending speed of the piston rod 1 is correspondingly increased; when the oil passing needle 4 is adjusted downwards, the position where the damping oil flows on the concave socket 12 is reduced, the position where the damping oil flows on the convex socket 11 is increased, and the sliding and stretching speed of the piston rod 1 is correspondingly reduced.

The other end of the cylinder body 2 is provided with an open opening 16, and an oil seal 17 and a cylinder body end cover 18 are sequentially positioned on the open opening 16; the periphery of the oil seal 17 is sealed on the inner wall of the cylinder body 2, and the cylinder body end cover 18 is covered on the open hole 16 and positioned on the oil seal 17; the piston rod 1 is hermetically inserted on the oil seal 17 and the cylinder end cover 18.

As shown in fig. 8-10, when the piston rod 1 slides in the opposite direction of the cylinder 2, the oil blocking member 7 moves in the groove 8 and opens the oil passing hole 6, the damping oil flows in the cylinder 2 and flows from one side of the piston 3 to the other side of the piston 3 through the radial oil passing hole 10, the concave socket position 12, the convex socket position 11 and the oil passing hole 6, wherein the flow rate of the damping oil decreases when the damping oil flows from the concave socket position 12 to the convex socket position 11 through the radial oil passing hole 10, so as to finally realize that the piston rod 1 slides rapidly to extend out of the cylinder 2 and the speed gradually decreases when approaching to the extended terminal position.

As shown in fig. 11-13, when the piston rod 1 slides towards the cylinder 2, the oil blocking member 7 moves in the groove 8 and seals the oil passing hole 6, the damping oil flows in the cylinder 2 and flows from the other side of the piston 3 to one side of the piston 3 through the convex sleeving position 11, the concave sleeving position 12 and the radial oil passing hole 10, wherein the flow rate of the damping oil flows from the convex sleeving position 11 to the concave sleeving position 12 and increases when the damping oil flows out through the radial oil passing hole 10, so that the piston rod 1 slides slowly to retract into the cylinder 2, the speed gradually increases when the piston rod approaches the retraction end position, and the damping module generates a buffering damping force.

In order to improve the assembly stability of the piston 3, a positioning step 19 is further arranged on the piston rod 1, and a positioning sealing element 20 is sleeved on the positioning step 19; the piston 3 is positioned and arranged on the positioning step 19 in a sealing manner by a positioning sealing piece 20, is sleeved with a piston sealing piece 21 at the periphery thereof, and slides in the cylinder 2 in a sealing manner by the piston sealing piece 21.

The damping module can be applied to a hinge which comprises a first leaf plate 22, a second leaf plate 23, a rotating shaft 24 and a sleeve 25; the cylinder body 2 is fixedly arranged in the sleeve 25, and at least part of the outer end of the cylinder body extends out of the sleeve 25; the outer end of the rotating shaft 24 extends out of the sleeve 25, the inner end is provided with a rotating shaft bearing 26, the rotating shaft bearing 26 is rotatably arranged in the sleeve 25, and a screw rod transmission pair is arranged to be in driving connection with the piston rod 1.

The first sheet 22 is provided with a first sleeve 27; the outer end of the rotating shaft 24 is provided with a plane part 28 and is sleeved with a first pattern gland wheel 29, the peripheral part of the first pattern gland wheel 29 is fixedly sleeved in the first sleeve 27 through patterns, and a notch part 30 and a plane matching part 31 are arranged in the central hole of the first pattern gland wheel 29; the first pattern gland wheel 29 is provided at the outer end of the rotating shaft 24 with a center hole sleeve, and is in anti-rotation fit with the plane portion 28 through a plane fitting portion 31, an insertion key 32 is provided between the notch portion 30 and the rotating shaft 24, the insertion key 32 is located at the other side of the plane fitting portion 31, and is inserted into the notch portion 30 after the first pattern gland wheel 29 and the rotating shaft 24 are sleeved, so as to realize anti-rotation fixed connection between the first page 22 and the rotating shaft 24.

The first panel 22 is also provided with a second sleeve 33; a cylinder needle bearing 34 is arranged at the outer end of the cylinder body 2; the second sleeve 33 is sleeved outside the sleeve 25 with a gap and sleeved outside the cylinder needle roller bearing 34, and rotates at the outer ends of the sleeve 25 and the cylinder 2 through the cylinder needle roller bearing 34.

A third sleeve 35 is arranged on the second leaf plate 23; the outer wall of the sleeve 25 is provided with sleeve patterns 36; the third sleeve 35 is fixedly sleeved outside the sleeve 25 through a sleeve pattern 36 to realize the fixed connection between the second sheet 23 and the sleeve 25, and the third sleeve 35 is located between the first sleeve 27 and the second sleeve 33 when sleeved.

The screw transmission pair comprises a screw rotor 37, a connecting shaft 38 and a wear-resistant sleeve 39, wherein the screw rotor 37 is rotationally and linearly slidably arranged in the sleeve 25 and is in driving connection and linear sliding fit with the rotating shaft 24; the spiral rotor 37 is provided with a spiral groove 40 at the periphery; the connecting shaft 38 is transversely arranged in the sleeve 25, the wear-resistant sleeve 39 is sleeved outside the connecting shaft 38, and the outer surface of the wear-resistant sleeve 39 is in sliding fit with the spiral groove 40.

The end part of the piston rod 1 in the cylinder body 2 is provided with a pin shaft 41, and the pin shaft 41 respectively penetrates through the piston rod 1 and the spiral rotor 37 so as to realize the driving connection between the piston rod 1 and the spiral rotor 37.

A guide hole 42 is formed in the screw rotor 37, and inner guide insections are formed in the inner wall of the guide hole 42 and extend along the axial direction of the screw rotor 37; the inner end of the rotating shaft 24 is provided with an outer guide insection 43, the outer guide insection 43 extends along the axial direction of the rotating shaft 24, the inner end of the rotating shaft 24 is inserted into the guide hole 42, and the inner guide insection is meshed with the outer guide insection 43 and is in linear sliding fit.

An elastic piece 44 is sleeved at the inner end of the rotating shaft 24, an elastic adjusting hole 45 is arranged at the center of the outer end, and a transverse through groove 46 is arranged at the side part; the transverse through groove 46 is arranged along the axial direction of the rotating shaft 24 and transversely penetrates through the rotating shaft 24, a movable shaft 47 is arranged on the transverse through groove 46, and the movable shaft 47 and the elastic piece 44 elastically act; the movable shaft 47 penetrates through the transverse through groove 46 during assembly, and two ends of the movable shaft respectively extend out of the transverse through groove 46 and elastically act with the elastic piece 44, and the two ends of the movable shaft 47 respectively elastically act with the elastic piece 44, so that the assembly stability of the movable shaft and the elastic piece 44 can be effectively improved, and the elastic force of the elastic piece 44 can be more concentrated; the end of the elastic adjusting hole 45 is communicated with the transverse through groove 46, and an elastic adjusting piece 48 is rotatably arranged on the elastic adjusting hole, when the elastic adjusting piece 48 rotates, the movable shaft 47 is driven to slide up and down on the transverse through groove 46 along the axial direction of the rotating shaft 24, and when the movable shaft 47 slides up and down, the elastic force of the elastic adjusting piece 48 is adjusted.

The rotation of the elastic adjusting member 48 enables the movable shaft 47 to move and adjusts the length of the elastic member 44, thereby adjusting the rotational opening speed of the first sheet 22 relative to the second sheet 23. When the adjustment of the telescopic length of the elastic member 44 is shorter, the greater the stored elastic force of the elastic member 44 is, the faster the opening speed of the first sheet 22 in rotation with respect to the second sheet 23 is; when the elastic member 44 is adjusted to have a longer expansion length, the stored elastic force of the elastic member 44 is smaller, and the opening speed of the first sheet 22 with respect to the second sheet 23 is slower.

In order to improve the appearance integrity of the hinge, the rest part of the periphery of the first pattern gland wheel 29 extends out of the first sleeve 27 and is sleeved with a first end cover 49, an elastic adjustment avoiding port 50 is arranged at the center of the first end cover 49 and corresponds to the elastic adjusting piece 48, and a rubber plug 51 is arranged on the elastic adjustment avoiding port 50; the second sleeve 33 is further internally sleeved with a second patterned capping wheel 52, a central hole of the second patterned capping wheel 52 is sleeved at the outer end of the cylinder body 2 in a clearance manner, the peripheral part of the second patterned capping wheel is fixedly sleeved in the second sleeve 33 through patterns, the rest part of the periphery of the second patterned capping wheel 52 extends out of the second sleeve 33 and is sleeved with a second end cover 53, and the center of the second end cover 53 is provided with an oil passing needle adjusting avoiding opening 54 corresponding to the oil passing needle adjusting part 14.

In order to improve the rotational stability and smoothness between the first leaf plate 1 and the second leaf plate 2, sleeve bearings 55 are respectively arranged between the third sleeve 35 and the first sleeve 27 and between the third sleeve 35 and the second sleeve 33, and are respectively in running fit with each other through the sleeve bearings 55.

The working principle is as follows: first page board 22 and second page board 23 are connected with door frame and door body respectively, and when opening the door, pivot 24 and sleeve pipe 25 rotate relatively, and pivot 24 drives screw rotor 37 rotatory, and screw rotor 37 is linear motion to the loose axle 47 direction in step in rotatory process, and elastic component 44 is compressed to the stored energy, and simultaneously, piston rod 1 is upwards stretched out when screw rotor 37 linear motion. When the door opening acting force is removed, the elastic piece 44 releases energy, the spiral rotor 37 moves linearly towards the cylinder body 2, the spiral rotor 37 rotates reversely, the rotating shaft 24 and the sleeve 25 rotate reversely relatively, the door body is closed automatically, and in the door body closing process, the piston rod 1 retracts towards the inside of the cylinder body 2 and does damping motion, so that the door body is closed slowly.

The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a damping module with adjustable damping force, includes piston rod (1) and inside cylinder body (2) of placing damping oil, slides in cylinder body (2) and is provided with piston (3), outside piston rod (1) one end stretches out cylinder body (2), the other end is located cylinder body (2) and is connected with piston (3) cooperation to slide through piston (3) and stretch out and draw back on cylinder body (2), its characterized in that: an oil needle (4) is arranged in the cylinder body (2); the piston rod (1) is sleeved on the outer side of the oil passing needle (4), and an oil passing channel (5) is formed between the piston rod and the oil passing needle; the piston (3) is provided with an oil passing hole (6) and an oil blocking piece (7); the oil blocking piece (7) is movably arranged on the piston (3) and opens or seals the oil passing hole (6) during movement.

2. The damping force adjustable damping module according to claim 1, wherein: a groove (8) is arranged on the piston (3); the oil blocking piece (7) is movably arranged in the groove (8); the oil passing hole (6) is arranged on the piston (3) along the axial direction of the piston rod (1) and is communicated with the groove (8);

the oil blocking piece (7) opens the oil passing hole (6) when the piston rod (1) slides towards the opposite direction of the cylinder body (2);

the oil blocking piece (7) seals the oil passing hole (6) when the piston rod (1) slides towards the cylinder body (2).

3. The damping force adjustable damping module according to claim 2, wherein: a sleeve joint hole (9) is formed in the center of the end part of the piston rod (1) positioned in the cylinder body (2), and the sleeve joint hole (9) is formed in the axial direction of the piston rod (1); the oil passing needle (4) is sleeved in the sleeve hole (9) in a telescopic way when the piston rod (1) slides; the side wall of the piston rod (1) is also provided with a radial oil passing port (10), and the radial oil passing port (10) is communicated with the sleeving hole (9);

the oil passing channel (5) is formed between the sleeving hole (9) and the oil passing needle (4) and is communicated with the radial oil passing port (10).

4. The damping force adjustable damping module according to claim 3, wherein: the upper part of the side wall of the oil passing needle (4) is provided with a convex socket joint position (11), and the lower part is provided with a concave socket joint position (12); the convex socket joint position (11) and the concave socket joint position (12) form angular transition or arc transition;

the oil passing amount of the oil passing channel (5) formed between the convex sleeving position (11) and the sleeving hole (9) is less than that of the oil passing channel (5) formed between the concave sleeving position (12) and the sleeving hole (9).

5. The damping force adjustable damping module according to claim 4, wherein: an oil needle adjusting hole (13) is formed in one end of the cylinder body (2), an oil needle adjusting piece (14) is arranged through the oil needle adjusting hole (13), the center of the upper end of the oil needle adjusting piece (14) is fixedly connected with the lower portion of the oil needle (4), an adjusting sealing piece (15) is arranged on the outer side of the oil needle adjusting piece, the oil needle adjusting piece (14) is arranged on the oil needle adjusting hole (13) in a sealing type rotating mode through the adjusting sealing piece (15), and the oil needle adjusting piece (14) drives the oil needle (4) to stretch out and draw back on the sleeving hole (9) in an adjustable mode when rotating, so that sliding and stretching speed adjustment of the piston rod (1) is achieved finally;

an open opening (16) is formed in the other end of the cylinder body (2), and an oil seal piece (17) and a cylinder body end cover (18) are sequentially positioned on the open opening (16); the periphery of the oil seal (17) is sealed and acts on the inner wall of the cylinder body (2), and a cylinder body end cover (18) covers the open port (16) and is positioned and acts on the oil seal (17); the piston rod (1) is inserted on the oil seal (17) and the cylinder end cover (18) in a sealing way.

6. The damping force adjustable damping module according to claim 5, wherein: when the piston rod (1) slides towards the opposite direction of the cylinder body (2), the oil blocking piece (7) moves in the groove (8) and opens the oil passing hole (6), damping oil flows in the cylinder body (2) and flows to the other side of the piston (3) from one side of the piston (3) through the radial oil passing hole (10), the concave sleeve joint position (12), the convex sleeve joint position (11) and the oil passing hole (6), wherein the flow rate of the damping oil is reduced when the damping oil flows from the concave sleeve joint position (12) to the convex sleeve joint position (11) through the radial oil passing hole (10), so that the piston rod (1) can slide rapidly to extend out of the cylinder body (2) and the speed is gradually reduced when the piston rod approaches to extend out of a terminal position;

when piston rod (1) slided towards the direction of cylinder body (2), oil blocking piece (7) activity is in recess (8), and sealed oilhole (6) of crossing, damping oil flows in cylinder body (2), and cup joint position (11) through the convex from the opposite side of piston (3), concave cup joints position (12), radially cross one side of hydraulic fluid port (10) flow direction piston (3), wherein, damping oil flows to concave cup joint position (12) from convex cup joint position (11), and flow rate grow when flowing through hydraulic fluid port (10) through radially crossing, with finally realize piston rod (1) slow sliding indentation cylinder body (2), and the speed is the quickening gradually when being close indentation terminal position, and make damping module produce buffering damping force.

7. The damping force adjustable damping module according to claim 6, wherein: the piston rod (1) is also provided with a positioning step (19), and a positioning sealing element (20) is sleeved on the positioning step (19); the piston (3) is positioned and arranged on the positioning step (19) in a sealing way through a positioning sealing piece (20), a piston sealing piece (21) is sleeved on the periphery of the piston (3), and the piston slides in the cylinder (2) in a sealing way through the piston sealing piece (21).

8. A hinge, its characterized in that: comprising the damping force adjustable damping module of claim 7; the hinge comprises a first hinge plate (22), a second hinge plate (23), a rotating shaft (24) and a sleeve (25); the cylinder body (2) is fixedly arranged in the sleeve (25), and at least part of the outer end of the cylinder body extends out of the sleeve (25); the outer end of the rotating shaft (24) extends out of the sleeve (25), the inner end of the rotating shaft is provided with a rotating shaft bearing (26), the rotating shaft bearing (26) is rotatably arranged in the sleeve (25), and a screw rod transmission pair is arranged to be in driving connection with the piston rod (1);

a first sleeve (27) is arranged on the first leaf (22); the outer end of the rotating shaft (24) is provided with a plane part (28) and is sleeved with a first pattern gland wheel (29), the peripheral part of the first pattern gland wheel (29) is fixedly sleeved in the first sleeve (27) through patterns, and a notch part (30) and a plane matching part (31) are arranged in the central hole of the first pattern gland wheel (29); the central hole sleeve of the first pattern gland wheel (29) is arranged at the outer end of the rotating shaft (24) and is matched with the plane part (28) in a rotation-preventing way through a plane matching part (31), an inserting key (32) is arranged between the notch part (30) and the rotating shaft (24), the inserting key (32) is positioned at the other side of the plane matching part (31) and is inserted into the notch part (30) after the first pattern gland wheel (29) and the rotating shaft (24) are sleeved, so that the rotation-preventing fixed connection between the first page (22) and the rotating shaft (24) is realized;

the first leaf plate (22) is also provided with a second sleeve (33); a cylinder needle bearing (34) is arranged at the outer end of the cylinder body (2); the second sleeve (33) is sleeved outside the sleeve (25) in a clearance manner, sleeved outside the cylinder body needle roller bearing (34) and rotated at the outer ends of the sleeve (25) and the cylinder body (2) through the cylinder body needle roller bearing (34);

a third sleeve (35) is arranged on the second leaf plate (23); the outer wall of the sleeve (25) is provided with sleeve patterns (36); the third sleeve (35) is fixedly sleeved outside the sleeve (25) through a sleeve pattern (36) to realize the fixed connection between the second leaf plate (23) and the sleeve (25), and the third sleeve (35) is positioned between the first sleeve (27) and the second sleeve (33) when sleeved.

9. The hinge according to claim 8, wherein: the screw rod transmission pair comprises a screw rotor (37), a connecting shaft (38) and a wear-resistant sleeve (39), wherein the screw rotor (37) is rotationally and linearly slidably arranged in the sleeve (25) and is in driving connection and linear sliding fit with the rotating shaft (24); the periphery of the spiral rotor (37) is provided with a spiral groove (40); the connecting shaft (38) is transversely arranged in the sleeve (25), the wear-resistant sleeve (39) is sleeved outside the connecting shaft (38), and the outer surface of the wear-resistant sleeve (39) is in sliding fit with the spiral groove (40);

a pin shaft (41) is arranged at the end part of the piston rod (1) positioned in the cylinder body (2), and the pin shaft (41) respectively penetrates through the piston rod (1) and the spiral rotor (37) to realize the driving connection between the piston rod (1) and the spiral rotor (37);

a guide hole (42) is formed in the spiral rotor (37), and inner guide insections are formed in the inner wall of the guide hole (42) and extend along the axial direction of the spiral rotor (37); the inner end of the rotating shaft (24) is provided with an outer guide insection (43), the outer guide insection (43) extends along the axial direction of the rotating shaft (24), the inner end of the rotating shaft (24) is inserted into the guide hole (42), and the inner guide insection is meshed with the outer guide insection (43) and is in linear sliding fit.

10. The hinge according to claim 9, characterized in that: an elastic piece (44) is sleeved at the inner end of the rotating shaft (24), an elastic adjusting hole (45) is arranged at the center of the outer end, and a transverse through groove (46) is arranged at the side part; the transverse through groove (46) is arranged along the axial direction of the rotating shaft (24), the rotating shaft (24) transversely penetrates through the transverse through groove (46), a movable shaft (47) is arranged on the transverse through groove (46), and the movable shaft (47) and the elastic piece (44) elastically act; the end part of the elastic adjusting hole (45) is communicated with the transverse through groove (46), and an elastic adjusting piece (48) is rotatably arranged on the elastic adjusting hole, when the elastic adjusting piece (48) rotates, the movable shaft (47) is driven to vertically slide on the transverse through groove (46) along the axial direction of the rotating shaft (24), and when the movable shaft (47) vertically slides, the elastic force of the elastic adjusting piece (48) is adjusted;

the rest part of the periphery of the first pattern gland wheel (29) extends out of the first sleeve (27) and is sleeved with a first end cover (49), an elastic adjustment avoiding opening (50) is arranged at the center of the first end cover (49) corresponding to the elastic adjusting piece (48), and a rubber plug (51) is arranged on the elastic adjustment avoiding opening (50); a second patterned gland wheel (52) is further sleeved in the second sleeve (33), a central hole of the second patterned gland wheel (52) is sleeved at the outer end of the cylinder body (2) in a clearance mode, the peripheral part of the second patterned gland wheel is fixedly sleeved in the second sleeve (33) through patterns, the rest part of the periphery of the second patterned gland wheel (52) extends out of the second sleeve (33) and is sleeved with a second end cover (53), and an oil passing needle adjusting avoiding opening (54) is formed in the center of the second end cover (53) and corresponds to the oil passing needle adjusting piece (14);

sleeve bearings (55) are arranged between the third sleeve (35) and the first sleeve (27) and between the third sleeve and the second sleeve (33), and are in running fit with each other through the sleeve bearings (55).

Images