CN219241667U

CN219241667U - Damping oil cylinder and hinge provided with same

Info

Publication number: CN219241667U
Application number: CN202222756984.9U
Authority: CN
Inventors: 陈炳宣
Original assignee: Zhaoqing Gaoyao Zhongtianming Hardware Technology Co ltd
Current assignee: Zhaoqing Gaoyao Zhongtianming Hardware Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-06-23
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a damping oil cylinder and a hinge provided with the same, wherein the oil cylinder comprises a cylinder barrel, a piston and an energy storage spring, a first rotating shaft and a second rotating shaft are respectively arranged in two ends of the cylinder barrel in a rotating way, the piston is axially and slidably arranged in the cylinder barrel and is in spiral fit with the first rotating shaft, and the energy storage spring is in compression joint between the piston and the second rotating shaft; the piston is provided with a first oil passing hole and a second oil passing hole which penetrate through two ends of the piston, a one-way flow limiting valve is arranged in the first oil passing hole, and the second oil passing hole is positioned in the center of the piston; the first rotating shaft is provided with a central hole penetrating through two ends of the first rotating shaft, a speed regulating screw is arranged in the central hole, a valve needle with a necking section is arranged at the inner end of the speed regulating screw, and the valve needle is inserted into the second oil passing hole; the second rotating shaft is provided with through holes penetrating through two ends of the second rotating shaft, and ejector rods used for pressing the energy storage springs are arranged in the through holes. The cylinder barrel of the damping cylinder is a cylinder body shell, so that the cost is low, the two ends of the damping cylinder are provided with independent rotating shafts, the damping cylinder can rotate more smoothly, and the supporting force is good.

Description

Damping oil cylinder and hinge provided with same

Technical Field

The utility model relates to a damping oil cylinder, in particular to a damping oil cylinder and a hinge with the same.

Background

Chinese patent No. CN202220089940.2 discloses a damper hinge in 2022, 7 and 5, comprising a first leaf and a second leaf which are matched in rotation, opening and closing by a damper buffer module; the damping buffer module comprises a damping buffer device, a rotating shaft and a sleeve; the damping buffer device is arranged in the sleeve, and a piston rod of the damping buffer device is in transmission connection with the pushing piece; the inner end of the rotating shaft is rotatably arranged in the sleeve and sleeved with an elastic piece, the elastic piece respectively and elastically acts on the rotating shaft and the pushing piece, the outer end of the rotating shaft extends out of the sleeve and is fixedly connected with the first page, and the periphery of the inner end of the rotating shaft is also provided with a spiral groove; the pushing piece is sleeved on the rotating shaft, and a ball is arranged between the pushing piece and the spiral groove; the sleeve is fixedly connected with the second page plate. The structure adopts the independent damping buffer module, and the damping buffer module is provided with independent parts such as a shell and the like, so that the cost is high; in addition, the rotating shaft needs to pass through the elastic piece (the compression spring) and then is in spiral fit with the pushing piece in the sleeve, the rotating shaft needs to be long, and the pushing piece needs to be additionally connected with the damping buffer module, so that the cost is high.

Disclosure of Invention

The utility model aims to provide the damping oil cylinder supported by the double rotating shafts and the hinge provided with the damping oil cylinder, which are simple and reasonable in structure, convenient to install, strong in integrity and low in cost.

The purpose of the utility model is realized in the following way:

the utility model provides a damping hydro-cylinder, includes cylinder, piston and energy storage spring, its characterized in that: the two ends of the cylinder barrel are respectively provided with a first rotating shaft and a second rotating shaft in a rotating way, the piston is axially arranged in the cylinder barrel in a sliding way and is in spiral fit with the first rotating shaft, and the energy storage spring is in compression joint between the piston and the second rotating shaft; the piston is provided with a first oil passing hole and a second oil passing hole which penetrate through two ends of the piston, a one-way flow limiting valve is arranged in the first oil passing hole, and the second oil passing hole is positioned in the center of the piston; the first rotating shaft is provided with a central hole penetrating through two ends of the first rotating shaft, a speed regulating screw is arranged in the central hole, a valve needle with a necking section is arranged at the inner end of the speed regulating screw, and the valve needle is inserted into the second oil passing hole; the second rotating shaft is provided with a through hole penetrating through two ends of the second rotating shaft, a push rod used for pressing the energy storage spring is arranged in the through hole, hydraulic oil is filled in the cylinder barrel, and the inside of the cylinder barrel is sealed and separated from the outside.

The aim of the utility model can be also solved by adopting the following technical measures:

as a more specific scheme, a first shaft head is arranged at the outer end of the first rotating shaft; the periphery that first pivot corresponds first spindle nose is equipped with first shaft shoulder, is equipped with first annular cambered surface recess on the first shaft shoulder, and first spindle nose overcoat is equipped with first axle sleeve, and first axle sleeve is equipped with second annular cambered surface recess towards first annular cambered surface recess, is equipped with a plurality of first steel balls between first annular cambered surface recess and the second annular cambered surface recess, and first axle sleeve is located in the one end of cylinder, the cylinder is equipped with the first inward flange that prevents that first axle sleeve from deviating from, is equipped with the sealing washer between the outer anchor ring and the inner anchor ring of first axle sleeve respectively with cylinder inner wall and first spindle nose periphery.

As a further scheme, the outer end of the second rotating shaft is provided with a second shaft head; the second rotating shaft is provided with a second shoulder corresponding to the periphery of the second shaft head, a third annular cambered surface groove is formed in the second shoulder, a second shaft sleeve is sleeved outside the second shaft head, a fourth annular cambered surface groove is formed in the second shaft sleeve towards the third annular cambered surface groove, a plurality of second steel balls are arranged between the third annular cambered surface groove and the fourth annular cambered surface groove, the second shaft sleeve is positioned in the other end of the cylinder barrel, the cylinder barrel is provided with a second inward flanging for preventing the second shaft sleeve from being separated, and a sealing ring is arranged between the outer annular surface and the inner annular surface of the second shaft sleeve and the front of the inner wall of the cylinder barrel and the periphery of the second shaft head respectively.

As a further scheme, a first guide groove is axially formed in the inner end of the first rotating shaft, and the piston is inserted into the first guide groove and is in spiral fit with the first guide groove; the inner end of the second rotating shaft is axially provided with a second guide groove, a pressing plate is axially and slidably arranged in the second guide groove, and the inner end of the through hole is communicated with the second guide groove pressing plate in a pressing connection mode between the energy storage spring and the inner end of the ejector rod.

As a further scheme, an annular groove, a spiral groove and a guide block are sequentially formed in the periphery of the piston, the annular groove is located at one end close to the first rotating shaft, and a sealing ring is arranged outside the annular groove; the inner wall of the first guide groove of the first rotating shaft is provided with a ball and a ball positioning groove, and the ball falls into the ball positioning groove and the spiral groove at the same time; the inner wall of the cylinder barrel is provided with an axial guide groove, and the guide block is exposed out of the first rotating shaft and is in linear sliding fit with the axial guide groove.

As a further scheme, the two ball positioning grooves are symmetrically arranged and positioned on the inner end face of the first rotating shaft; the periphery of the piston is provided with two sections of spiral grooves which are respectively matched with the corresponding balls.

As a further scheme, one end of the piston, which faces the energy storage spring, is provided with a cavity, the first oil passing hole and the second oil passing hole are respectively communicated with the cavity, and the valve needle is inserted into the first oil passing hole and is in clearance fit with the second oil passing hole.

As a further scheme, the inner walls of the cylinder barrel are provided with first bearing platforms corresponding to the inner end surfaces of the first shaft sleeve and the second shaft sleeve, and the inner walls of the cylinder barrel are provided with second bearing platforms corresponding to the inner ends of the first rotating shaft and the second rotating shaft.

As a further scheme, the piston is also provided with an embedded groove, and a magnet is arranged in the embedded groove.

As a further scheme, the periphery of the cylinder barrel is also provided with a latch, or the position of the periphery part of the cylinder barrel is set to be polygonal.

The hinge comprises a first page plate and a second page plate, wherein the first page plate and the second page plate are respectively provided with a first sleeve and a second sleeve, and the first sleeve and the second sleeve are respectively in transmission connection with the cylinder barrel and the first rotating shaft.

The beneficial effects of the utility model are as follows:

the cylinder barrel of the damping cylinder is a cylinder body shell, so that the cost is low, the two ends of the damping cylinder are provided with independent rotating shafts, the damping cylinder can rotate more smoothly, and the supporting force is good; the damping cylinder is suitable for the hinge, and the rotating shaft and the cylinder barrel of the damping cylinder are respectively in transmission with a first hinge plate and a second hinge plate of the hinge, so that the damping hinge can be formed.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the hinge of the present utility model.

Fig. 2 is a schematic diagram of a front view structure of a damping cylinder according to the present utility model.

FIG. 3 is a schematic view of an angle exploded structure of the damping cylinder according to the present utility model.

FIG. 4 is a schematic view of another angle exploded view of the damping cylinder of the present utility model.

Fig. 5 is a schematic view of the cross-sectional A-A structure of fig. 2.

Fig. 6 is a schematic structural diagram of another embodiment of the present utility model.

Detailed Description

The utility model is further described below with reference to the accompanying drawings and examples:

referring to fig. 2 to 5, a damping cylinder 30 comprises a cylinder 1, a piston 3 and an energy storage spring 2, wherein a first rotating shaft 4 and a second rotating shaft 7 are respectively arranged in two ends of the cylinder 1 in a rotating manner, the piston 3 is axially and slidably arranged in the cylinder 1 and is in spiral fit with the first rotating shaft 4, and the energy storage spring 2 is in compression joint between the piston 3 and the second rotating shaft 7; the piston 3 is provided with a first oil passing hole 36 and a second oil passing hole 37 which penetrate through two ends of the piston, a one-way flow limiting valve 34 is arranged in the first oil passing hole 36, and the second oil passing hole 37 is positioned at the center of the piston 3; the first rotating shaft 4 is provided with a central hole 46 penetrating through two ends of the first rotating shaft, a speed regulating screw 5 is arranged in the central hole 46, a valve needle 51 with a necking section 511 is arranged at the inner end of the speed regulating screw 5, and the valve needle 51 is inserted into the second oil passing hole 37; the second rotating shaft 7 is provided with a through hole 72 penetrating through two ends of the second rotating shaft, the through hole 72 is internally provided with a push rod 6 for pressing the energy storage spring 2, hydraulic oil is filled in the cylinder barrel 1, and the inside of the cylinder barrel is sealed and separated from the outside (shown by an arrow at C, D, E, F, G, H in fig. 5, and the inside of the cylinder barrel is a sealing ring). The inner end of the speed regulating screw 5 is riveted with the valve needle 51, but the two can rotate relatively.

The ejector rod 6 is a screw rod.

The outer end of the first rotating shaft 4 is provided with a first shaft head 41; the periphery that first pivot 4 corresponds first spindle nose 41 is equipped with first shaft shoulder 45, is equipped with first annular cambered surface recess on the first shaft shoulder 45, and first spindle nose 41 overcoat is equipped with first axle sleeve 8, and first axle sleeve 8 is equipped with second annular cambered surface recess towards first annular cambered surface recess, is equipped with a plurality of first steel balls 81 between first annular cambered surface recess and the second annular cambered surface recess, and first axle sleeve 8 is located in the one end of cylinder 1, cylinder 1 is equipped with the first internal flange 13 that prevents that first axle sleeve 8 from deviating from, is equipped with the sealing washer between the outer anchor ring and the inner anchor ring of first axle sleeve 8 respectively with cylinder 1 inner wall and first spindle nose 41 periphery.

The outer end of the second rotating shaft 7 is provided with a second shaft head 71; the second rotating shaft 7 is provided with a second shoulder corresponding to the periphery of the second shaft head 71, a third annular cambered surface groove is formed in the second shoulder, a second shaft sleeve 9 is sleeved outside the second shaft head 71, a fourth annular cambered surface groove is formed in the second shaft sleeve 9 towards the third annular cambered surface groove, a plurality of second steel balls 91 are arranged between the third annular cambered surface groove and the fourth annular cambered surface groove, the second shaft sleeve 9 is positioned in the other end of the cylinder barrel 1, the cylinder barrel 1 is provided with a second inward flanging 14 for preventing the second shaft sleeve 9 from being separated, and sealing rings are arranged between the outer annular surface and the inner annular surface of the second shaft sleeve 9 and the inner wall of the cylinder barrel 1 and the front of the periphery of the second shaft head 71.

In addition, the first shaft head 41 and the second shaft head 71 are respectively provided with a first annular groove and a second annular groove corresponding to the first shaft sleeve 8 and the second shaft sleeve 9, and a first clamping spring J and a second clamping spring K are respectively arranged in the first annular groove and the second annular groove.

The inner end of the first rotating shaft 4 is axially provided with a first guide groove 42, and the piston 3 is inserted into the first guide groove 42 and is in spiral fit with the first guide groove; the inner end of the second rotating shaft 7 is axially provided with a second guide groove 73, the second guide groove 73 is axially provided with a pressing plate 61 in a sliding manner, the inner end of the through hole 72 is communicated with the second guide groove 73, and the pressing plate 61 is pressed between the energy storage spring 2 and the inner end of the ejector rod 6.

The periphery of the piston 3 is sequentially provided with an annular groove, a spiral groove 31 and a guide block 33, the annular groove is positioned at one end close to the first rotating shaft 4, and a sealing ring is arranged outside the annular groove; the inner wall of the first guide groove 42 of the first rotating shaft 4 is provided with a ball 44 and a ball positioning groove 43, and the ball 44 falls into the ball positioning groove 43 and the spiral groove 31 at the same time; the inner wall of the cylinder barrel 1 is provided with an axial guide groove 12, and a guide block 33 is exposed out of the first rotating shaft 4 and is in linear sliding fit with the axial guide groove 12.

The ball positioning grooves 43 are symmetrically arranged in two and are positioned on the inner end surface of the first rotating shaft 4; the periphery of the piston 3 is provided with two sections of spiral grooves 31, and the two sections of spiral grooves 31 are respectively matched with the corresponding balls 44.

The end of the piston 3 facing the energy storage spring 2 is provided with a cavity 32, the first oil passing hole 36 and the second oil passing hole 37 are respectively communicated with the cavity 32, and the valve needle 51 is inserted into the first oil passing hole 36 and is in clearance fit with the second oil passing hole 37. The first oil passing hole 36 is a stepped hole, the one-way flow limiting valve 34 is a small ball, the small ball is arranged in the first oil passing hole 36, and a riveting point protrudes inwards from one end of the first oil passing hole 36 towards the first rotating shaft 4 so as to prevent the small ball from falling out.

The inner wall of the cylinder barrel 1 is provided with a first bearing platform corresponding to the inner end surfaces of the first shaft sleeve 8 and the second shaft sleeve 9, and the inner wall of the cylinder barrel 1 is provided with a second bearing platform corresponding to the inner ends of the first rotating shaft 4 and the second rotating shaft 7.

The piston 3 is also provided with an embedded groove 38, and a magnet 35 is arranged in the embedded groove to realize metal scraps generated after the magnetic damping cylinder 30 moves for a long time.

The periphery of the cylinder barrel 1 is also provided with a latch 11.

Referring to fig. 1, a hinge of the damping cylinder 30 includes a first leaf 10 and a second leaf 20, where the first leaf 10 and the second leaf 20 are respectively provided with a first sleeve 101 and a second sleeve 201, and the first sleeve 101 and the second sleeve 201 are respectively in transmission connection with the cylinder 1 and the first rotary shaft 4.

In order to facilitate the interference fit of a part of the cylinder barrel 1 of the damping cylinder with the sleeve of one of the plates, and the other part of the cylinder barrel 1 is in rotating fit with the sleeve of the other plate, as shown in fig. 6, the periphery of the cylinder barrel 1 can be provided with a narrowed section 15, and the periphery of the other end is provided with a convex latch 11.

The working principle of the damping cylinder is as follows: it is assumed that the first and

second leaves

10 and 20 are connected to the door body and the door frame, respectively. Referring to fig. 5, when the door is opened, the cylinder 1 rotates relative to the rotation shafts (the first rotation shaft and the second rotation shaft), the cylinder 1 drives the piston 3 to rotate at the same time, the piston 3 and the first rotation shaft 4 do screw motion, the piston 3 moves upward and causes the energy storage spring 2 to compress, and simultaneously, the unidirectional flow limiting valve 34 is opened (the allowed oil amount is larger) in the rising process of the piston 3, so as to reduce the resistance of the piston 3. In addition, by tightening the jack 6, pushing the pressure plate 61 causes the initial state of the charge spring 2 to be compressed, or by loosening the jack 6, the charge spring 2 releases the pressure to push the pressure plate 61.

When the door is closed, the energy storage spring 2 releases the pressure, so as to push the piston 3 to move downwards and drive the cylinder barrel 1 and the first page 10 to rotate reversely, at the moment, the one-way flow limiting valve 34 is closed (the oil which cannot pass through or is allowed to pass through is smaller), and the hydraulic oil below the piston 3 can only slowly pass through the gap between the valve needle 51 and the second oil passing hole 37, so that the effect of slowly closing the door is achieved. When the second oil passing hole 37 of the plunger 3 moves down to the necking position 511 of the needle 51 (when the valve body is close), the gap between the second oil passing hole 37 and the needle 51 increases, and the oil passing speed increases, thus achieving rapid closing of the door. By rotating the speed adjusting screw 5, the relative distance between the necking position 511 and the second oil passing hole 37 is changed, so that the angle of fast closing is changed, the second oil passing hole 37 reaches the necking position 511 later (or does not pass through the necking position 511), the closing speed is slower, and even the whole-course slow mute closing can be realized.

The foregoing is a preferred embodiment of the utility model showing and describing the general principles, features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the utility model, and that various changes and modifications may be effected therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.

Claims

1. The utility model provides a damping hydro-cylinder, includes cylinder (1), piston (3) and energy storage spring (2), its characterized in that: the two ends of the cylinder barrel (1) are respectively provided with a first rotating shaft (4) and a second rotating shaft (7) in a rotating way, the piston (3) is axially arranged in the cylinder barrel (1) in a sliding way and is in spiral fit with the first rotating shaft (4), and the energy storage spring (2) is in compression joint between the piston (3) and the second rotating shaft (7); the piston (3) is provided with a first oil passing hole (36) and a second oil passing hole (37) which penetrate through two ends of the piston, a one-way flow limiting valve (34) is arranged in the first oil passing hole (36), and the second oil passing hole (37) is positioned at the center of the piston (3); the first rotating shaft (4) is provided with a central hole (46) penetrating through two ends of the first rotating shaft, a speed regulating screw (5) is arranged in the central hole (46), a valve needle (51) with a necking section (511) is arranged at the inner end of the speed regulating screw (5), and the valve needle (51) is inserted into the second oil passing hole (37); the second rotating shaft (7) is provided with a through hole (72) penetrating through the two ends of the second rotating shaft, a push rod (6) used for pressing the energy storage spring (2) is arranged in the through hole (72), hydraulic oil is filled in the cylinder barrel (1), and the inside of the cylinder barrel is sealed and separated from the outside.

2. The damping cylinder as set forth in claim 1, wherein: the outer end of the first rotating shaft (4) is provided with a first shaft head (41); the periphery of the first rotating shaft (4) corresponding to the first shaft head (41) is provided with a first shaft shoulder (45), the first shaft shoulder (45) is provided with a first annular cambered surface groove, the first shaft head (41) is sleeved with a first shaft sleeve (8), the first shaft sleeve (8) is provided with a second annular cambered surface groove towards the first annular cambered surface groove, a plurality of first steel balls (81) are arranged between the first annular cambered surface groove and the second annular cambered surface groove, the first shaft sleeve (8) is positioned in one end of the cylinder barrel (1), the cylinder barrel (1) is provided with a first inward flanging for preventing the first shaft sleeve (8) from being separated, and a sealing ring is arranged between the outer annular surface and the inner annular surface of the first shaft sleeve (8) and the inner wall of the cylinder barrel (1) and the periphery of the first shaft head (41);

the outer end of the second rotating shaft (7) is provided with a second shaft head (71); the periphery that second pivot (7) corresponds second spindle (71) is equipped with the second shoulder, is equipped with third annular cambered surface recess on the second shoulder, and second spindle (71) overcoat is equipped with second sleeve (9), and second sleeve (9) are equipped with fourth annular cambered surface recess towards third annular cambered surface recess, are equipped with a plurality of second steel balls (91) between third annular cambered surface recess and the fourth annular cambered surface recess, and second sleeve (9) are located in the other end of cylinder (1), cylinder (1) are equipped with the second internal flange that prevents second sleeve (9) and deviate from, are equipped with the sealing washer before outer anchor ring and the interior anchor ring of second sleeve (9) respectively with cylinder (1) inner wall and second spindle (71) periphery.

3. The damping cylinder according to claim 2, characterized in that: a first guide groove (42) is axially formed in the inner end of the first rotating shaft (4), and the piston (3) is inserted into the first guide groove (42) and is in spiral fit with the first guide groove; the inner end of the second rotating shaft (7) is axially provided with a second guide groove (73), the second guide groove (73) is axially and slidably provided with a pressing plate (61), the inner end of the through hole (72) is communicated with the second guide groove (73), and the pressing plate (61) is pressed between the energy storage spring (2) and the inner end of the ejector rod (6).

4. The damping cylinder according to claim 2, characterized in that: the periphery of the piston (3) is sequentially provided with an annular groove, a spiral groove (31) and a guide block (33), the annular groove is positioned at one end close to the first rotating shaft (4), and a sealing ring is arranged outside the annular groove; the inner wall of the first guide groove (42) of the first rotating shaft (4) is provided with a ball (44) and a ball positioning groove (43), and the ball (44) falls into the ball positioning groove (43) and the spiral groove (31) at the same time; the inner wall of the cylinder barrel (1) is provided with an axial guide groove (12), and a guide block (33) is exposed out of the first rotating shaft (4) and is in linear sliding fit with the axial guide groove (12).

5. The damping cylinder as set forth in claim 4, wherein: the ball positioning grooves (43) are symmetrically arranged in two and are positioned on the inner end surface of the first rotating shaft (4); the periphery of the piston (3) is provided with two sections of spiral grooves (31), and the two sections of spiral grooves (31) are respectively matched with the corresponding balls (44).

6. The damping cylinder as set forth in claim 5, wherein: one end of the piston (3) facing the energy storage spring (2) is provided with a cavity (32), the first oil passing hole (36) and the second oil passing hole (37) are respectively communicated with the cavity (32), and the valve needle (51) is inserted into the first oil passing hole (36) and is in clearance fit with the second oil passing hole (37).

7. A damping cylinder as claimed in claim 3, wherein: the inner wall of cylinder (1) all corresponds the inner terminal surface of first axle sleeve (8) and second axle sleeve (9) and is equipped with first cushion cap, and the inner wall of cylinder (1) all corresponds the inner of first pivot (4) and second pivot (7) and is equipped with the second cushion cap.

8. The damping cylinder as set forth in claim 1, wherein: an embedded groove (38) is further formed in the piston (3), and a magnet (35) is arranged in the embedded groove.

9. The damping cylinder as set forth in claim 1, wherein: the periphery of the cylinder barrel (1) is also provided with a latch (11), or the position of the periphery part of the cylinder barrel (1) is set to be polygonal.

10. Hinge provided with a damping cylinder according to any one of claims 1 to 9, characterized in that: the hinge comprises a first page plate (10) and a second page plate (20), wherein the first page plate (10) and the second page plate (20) are respectively provided with a first sleeve (101) and a second sleeve (201), and the first sleeve (101) and the second sleeve (201) are respectively in transmission connection with the cylinder barrel (1) and the first rotating shaft (4).