CN218780183U

CN218780183U - Moment adjustable constant pressure floor spring

Info

Publication number: CN218780183U
Application number: CN202222897531.8U
Authority: CN
Inventors: 黄以方
Original assignee: Guangdong New Yongchang Hardware Technology Co ltd
Current assignee: Guangdong New Yongchang Hardware Technology Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-03-31
Anticipated expiration: 2032-11-01

Abstract

The utility model discloses an adjustable constant voltage floor spring of moment, including the casing and install the camshaft in the casing, the planker subassembly, first piston, the connecting rod, moment adjusting nut, moment adjusting rod, first compression spring, the bottom of camshaft is equipped with the constant pressure valve, is used for adjusting the inside pressure variation of casing, and the constant pressure valve includes the circular deep hole of seting up along the camshaft axial at camshaft bottom terminal surface, and second compression spring and second piston are packed into in proper order in the circular deep hole, and the drill way of circular deep hole compresses tightly through an end cap and seals, sets up the oilhole that has a perfect understanding on the end cap. The utility model has the advantages of simple and compact structure, low manufacturing cost, high reliability and the like.

Description

Moment adjustable constant pressure floor spring

Technical Field

The utility model mainly relates to a floor spring field especially relates to moment adjustable floor spring.

Background

The floor spring is mainly used for being installed below the ground and connected to a rotating shaft of the door body, so that the door has certain resilience force and buffering force in the process of opening and closing. The current spring, such as the patent with application number 200610126678.X, has the following disadvantages: 1. the constant pressure valve is designed on the first piston, so that the connection mode of the first piston, the carriage assembly and the connecting rod is limited, the processing cost is high, the required precision is high, the assembly is difficult and the like; 2. because the connecting rod is connected with the first piston through threads, the connecting rod and the first piston are easy to loosen in the spring compression and rebound processes, so that the floor spring loses functions; a sealing ring cannot be arranged between the contact surfaces of the connecting rod and the first piston, so that the sealing effect is poor; 3. the connecting rod is locked by a standard thread screw after being connected with the torque adjusting nut, and the standard thread is easy to loosen and fall off when the floor spring adjusts the torque limit; 4. the torque adjusting rod and the torque adjusting nut are connected in a hexagonal nested fit mode, the processing process cost is high, special equipment needs to be used for processing, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in: aiming at the defects in the prior art, the torque-adjustable constant-pressure floor spring which can keep the internal pressure of the shell balanced, has simple and compact structure, low manufacturing cost and high reliability is provided.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a moment adjustable constant voltage floor spring, including the casing and install the camshaft in the casing, the planker subassembly, first piston, the connecting rod, the moment adjusting nut, the moment adjusting lever, first compression spring, the top of camshaft stretches out outside the casing and is used for being connected with the AND gate and can rotate with the AND gate synchronization, the rotation action of camshaft and the removal action of planker subassembly link each other, the planker subassembly, first piston and connecting rod connect gradually and can synchronous motion, first inner chamber and second inner chamber are separated into with the casing inside to first piston, the one end of connecting rod is equipped with the external screw thread and with moment adjusting nut spiro union, the one end of moment adjusting lever is connected with the moment adjusting nut and can takes the rotation of moment adjusting nut, the other end of moment adjusting lever stretches out outside the casing, first compression spring cover is on connecting rod and moment adjusting nut and is located between the fender shoulder of first piston and moment adjusting nut, the bottom of camshaft is equipped with the constant pressure valve, be used for adjusting the pressure variation of casing inside, the constant pressure valve includes the circular deep hole of seting up along the camshaft axial in the camshaft of camshaft, second compression spring and second piston are packed into in proper order in the circular deep hole, the drill way through a stopper on the drill way of pressing tightly, the drill hole of seting up an oil hole.

As a further improvement of the utility model:

the first piston is provided with a through hole along the axial direction, the carriage assembly and the connecting rod both extend into the through hole of the first piston and are in lap joint with each other, the first piston, the carriage assembly and the connecting rod are provided with corresponding pin holes at the coincident positions, and connecting pins are inserted into the pin holes.

A first sealing ring is arranged between the outer circle of the first piston and the inner wall of the shell, and a second sealing ring is arranged between the outer circle of the connecting rod and the inner wall of the through hole of the first piston.

The end of the connecting rod, which is provided with the external thread, is provided with a reverse threaded hole along the axial direction, a reverse threaded screw is screwed in the reverse threaded hole, and the reverse threaded screw is sleeved with a retaining ring for preventing the moment adjusting nut from falling off.

The torque adjusting nut is provided with a through cylindrical pin hole along the radial direction, the excircle of the torque adjusting rod is symmetrically provided with two straight through grooves, and two ends of the cylindrical pin hole are respectively inserted into a cylindrical pin and embedded into the corresponding straight through grooves.

The plug is an elastic cylindrical pin.

A groove is formed in the outer circle of the second piston, and a third sealing ring is arranged in the groove.

Compared with the prior art, the utility model has the advantages of: 1. the constant pressure valve at the bottom of the camshaft can automatically adjust the pressure change in the shell, so that the pressure in the shell reaches a constant pressure state, and the probability of hydraulic medium leakage caused by the pressure change of the shell and each sealing element is reduced; 2. the constant pressure valve is arranged at the bottom of the camshaft, so that the connection mode among the first piston, the supporting plate assembly and the connecting rod is more flexible, and the first piston, the supporting plate assembly and the connecting rod are connected in a simple connecting pin mode, so that the structure is simple and compact, the cost is low, the assembly is easy, and the reliability is high; 3. sealing rings are arranged between the excircle of the first piston and the inner wall of the shell and between the excircle of the connecting rod and the inner wall of the through hole of the first piston, so that the sealing property is effectively ensured; 4. the connecting rod and the torque adjusting nut are locked by using the reverse-thread screw, so that the problem of screw loosening during torque adjustment limit is effectively avoided; 5. the torque adjusting rod is connected with the torque adjusting nut through the cylindrical pin, the working procedures are saved in the machining process, the machining is easy, special equipment is not needed, and the machining cost is low.

Drawings

Fig. 1 is a front view of the cutting device of the present invention.

Fig. 2 is a top sectional view of the present invention.

Fig. 3 is a cross-sectional enlarged view of the middle camshaft of the present invention.

Fig. 4 is an enlarged sectional view of the first piston according to the present invention.

Fig. 5 is a partial cross-sectional enlarged view of the connecting rod of the present invention.

Fig. 6 is an enlarged view of the middle torque adjusting nut of the present invention.

Fig. 7 is an enlarged view of the middle torque adjusting lever of the present invention.

Fig. 8 is a left side view of fig. 7.

Reference numerals: a cover plate 1; a housing 2; a first lumen 21; a second lumen 22; a camshaft 3; a cam plate 31; a carriage assembly 4; an upper carriage 41; a lower carriage 42; a central shaft 43; a roller 44; a first piston 5; a through hole 51; a first pin hole 52; the first seal ring 53; a first oil seal groove 54; a connecting rod 6; an external thread 61; a second pin hole 62; a second seal ring 63; a second oil seal groove 64; a counter-threaded hole 65; a reverse-threaded screw 66; a retainer ring 67; a torque adjusting nut 7; a cylindrical pin hole 71; a cylindrical pin 72; a moment adjusting rod 8; a through groove 81; a first compression spring 9; a bearing 10; a constant pressure valve 11; a circular deep hole 111; a second compression spring 112; a second piston 113; a plug 114; a third seal ring 115; a connecting pin 12.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, and it should be noted that the scope of the present invention is not limited to the following embodiments, and any modifications and decorations made by the present invention should be considered as the scope of the present invention without departing from the principle of the present invention.

As shown in fig. 1 and fig. 2, the utility model discloses an adjustable constant voltage floor spring of moment, including apron 1, casing 2 and install camshaft 3, planker subassembly 4, first piston 5, connecting rod 6, moment adjusting nut 7, moment adjusting lever 8, the first compression spring 9 in casing 2.

The camshaft 3 is used for being connected with a door and can synchronously rotate with the door, the lower end and the middle part of the camshaft 3 are arranged on a bearing 10, the top end of the camshaft 3 penetrates through the cover plate 1 and extends out of the shell 2, and the rotating action of the camshaft 3 is linked with the moving action of the carriage assembly 4. The carriage assembly 4 comprises an upper carriage 41 and a lower carriage 42, two central shafts 43 are arranged between the upper carriage 41 and the lower carriage 42, and a roller 44 is sleeved on each central shaft 43. The cam plate 31 of the camshaft 3 is located between the upper carriage 41 and the lower carriage 42 in the vertical direction and between the two rollers 44 in the horizontal direction. When the camshaft 3 rotates, the cam disc 31 swings and is in rolling engagement with the roller 44, so that the carriage assembly 4 moves.

The carriage assembly 4, the first piston 5 and the connecting rod 6 are connected in sequence and can move synchronously, and the first piston 5 divides the interior of the shell 2 into a first inner cavity 21 and a second inner cavity 22. Referring to fig. 1 and 5, one end of the connecting rod 6 is provided with an external thread 61 and is in threaded connection with the torque adjusting nut 7, one end of the torque adjusting rod 8 is connected with the torque adjusting nut 7 and can drive the torque adjusting nut 7 to rotate, and the other end of the torque adjusting rod 8 extends out of the shell 2. The first compression spring 9 is sleeved on the connecting rod 6 and the moment adjusting nut 7 and is positioned between the first piston 5 and a stop shoulder of the moment adjusting nut 7. The bottom of the camshaft 3 is provided with a constant pressure valve 11 for adjusting the pressure change inside the housing 2, referring to fig. 3, the constant pressure valve 11 includes a circular deep hole 111 formed on the bottom end face of the camshaft 3 along the axial direction of the camshaft 3, a second compression spring 112 and a second piston 113 are sequentially installed in the circular deep hole 111, an orifice of the circular deep hole 111 is tightly pressed and sealed by a plug 114, the plug 114 is an elastic cylindrical pin 72, and a through oil hole is formed in the plug 114. The outer circle of the second piston 113 is provided with a groove, and a third sealing ring 115 is arranged in the groove. The pressure in the shell 2 can change under the influence of expansion with heat and contraction with cold of a hydraulic medium, and the constant pressure valve 11 is arranged to effectively adjust the pressure change in the shell 2 automatically and keep the pressure balance. When the internal pressure of the shell 2 becomes high, the hydraulic medium penetrates through the oil hole on the plug 114 to press the second piston 113, the second piston 113 compresses the second compression spring 112, and the hydraulic medium flows into the circular deep hole 111, so that the pressure in the shell 2 is reduced; when the internal pressure of the housing 2 becomes lower, the second compression spring 112 rebounds to push the hydraulic medium out of the circular deep hole 111 and back into the housing 2, thereby increasing the internal pressure of the housing 2. Therefore, the constant pressure valve 11 can always make the pressure inside the housing 2 reach a constant pressure state, and the probability of leakage of the hydraulic medium due to pressure changes of the housing 2 and the sealing members is reduced.

Referring to fig. 1 and 4, a through hole 51 is axially formed in the first piston 5, the carriage assembly 4 and the connecting rod 6 both extend into the through hole 51 of the first piston 5 and are overlapped with each other, and specifically, an end of the connecting rod 6 extends between the upper carriage 41 and the lower carriage 42. The first piston 5, the carriage assembly 4 and the connecting rod 6 are provided with corresponding pin holes at the superposed positions, and connecting pins 12 are inserted into the pin holes. The pin hole on the first piston 5 is a first pin hole 52 and the pin hole on the connecting rod 6 is a second pin hole 62.

A first sealing ring 53 is arranged between the outer circle of the first piston 5 and the inner wall of the housing 2, specifically, a first oil seal groove 54 is formed in the outer circle of the first piston 5, the first sealing ring 53 is installed in the first oil seal groove 54, and the first sealing ring 53 is preferably a gray ring. A second sealing ring 63 is arranged between the excircle of the connecting rod 6 and the inner wall of the through hole 51 of the first piston 5, specifically, a second oil seal groove 64 is formed in the excircle of the connecting rod 6, the second sealing ring 63 is installed in the second oil seal groove 64, and the second sealing ring 63 is a double-O-shaped ring.

Referring to fig. 1 and 5, a reverse threaded hole 65 is axially formed at one end of the connecting rod 6 provided with the external thread 61, a reverse threaded screw 66 is screwed in the reverse threaded hole 65, and a retaining ring 67 is sleeved on the reverse threaded screw 66 and used for preventing the torque adjusting nut 7 from falling off. The anti-tooth design can effectively prevent the problem of falling between the connecting rod 6 and the torque adjusting nut 7.

Referring to fig. 1, 6, 7, and 8, the torque adjusting nut 7 is radially provided with a through cylindrical pin hole 71, the outer circle of the torque adjusting rod 8 is symmetrically provided with two through grooves 81, and two ends of the cylindrical pin hole 71 are respectively inserted into a cylindrical pin 72 and embedded into the corresponding through grooves 81. The moment adjusting rod 8 is rotated, the moment adjusting nut 7 is driven to rotate through the action of the cylindrical pin 72, so that spiral motion is generated between the moment adjusting nut 7 and the external thread 61 of the connecting rod 6, the connecting rod 6 is enabled to axially move, the first compression spring 9 is compressed or released, and the moment adjusting effect is achieved.

Claims

1. The utility model provides an adjustable constant voltage floor spring of moment, including casing (2) and install camshaft (3) in casing (2), planker subassembly (4), first piston (5), connecting rod (6), moment adjusting nut (7), moment adjusting rod (8), first compression spring (9), the top of camshaft (3) is stretched out outside casing (2) and is used for being connected with the AND gate and can rotate with the AND gate synchronization, the rotation action of camshaft (3) and the removal action of planker subassembly (4) link each other, planker subassembly (4), first piston (5) and connecting rod (6) connect gradually and but synchronous motion, first piston (5) are separated into first inner chamber (21) and second inner chamber (22) with casing (2) internal partitioning, the one end of connecting rod (6) is equipped with external screw thread (61) and with moment adjusting nut (7) spiro union, the one end of moment adjusting rod (8) is connected with moment adjusting nut (7) and can take moment adjusting nut (7) to rotate, the other end of moment adjusting rod (8) stretches out outside casing (2), the cover is located between first compression spring (9) and moment adjusting nut (7) and first piston shoulder (7) and its characterized in that it lies in that moment adjusting nut (7) and piston (7) are connected: the bottom of camshaft (3) is equipped with constant pressure valve (11), is used for adjusting the inside pressure variation of casing (2), and constant pressure valve (11) include in camshaft (3) bottom terminal surface along a circular deep hole (111) that camshaft (3) axial was seted up, second compression spring (112) and second piston (113) of packing into in proper order in circular deep hole (111), and the drill way of circular deep hole (111) compresses tightly through a end cap (114) and seals, sets up the oilhole that a link up on end cap (114).

2. The moment-adjustable constant-pressure floor spring as claimed in claim 1, wherein: a through hole (51) is formed in the first piston (5) in the axial direction, the carriage assembly (4) and the connecting rod (6) extend into the through hole (51) of the first piston (5) and are in lap joint with each other, corresponding pin holes are formed in the positions, overlapped, of the first piston (5), the carriage assembly (4) and the connecting rod (6), and connecting pins (12) are inserted into the pin holes.

3. The moment-adjustable constant-pressure floor spring as claimed in claim 2, wherein: a first sealing ring (53) is arranged between the excircle of the first piston (5) and the inner wall of the shell (2), and a second sealing ring (63) is arranged between the excircle of the connecting rod (6) and the inner wall of the through hole (51) of the first piston (5).

4. The moment-adjustable constant-pressure floor spring as claimed in claim 1, 2 or 3, wherein: one end of the connecting rod (6) provided with the external thread (61) is provided with a reverse threaded hole (65) along the axial direction, a reverse threaded screw (66) is screwed in the reverse threaded hole (65), and a retaining ring (67) is sleeved on the reverse threaded screw (66) and used for preventing the moment adjusting nut (7) from falling off.

5. The moment-adjustable constant-pressure floor spring as claimed in claim 1, 2 or 3, wherein: the torque adjusting nut (7) is provided with a through cylindrical pin hole (71) along the radial direction, the excircle of the torque adjusting rod (8) is symmetrically provided with two through grooves (81), and two ends of the cylindrical pin hole (71) are respectively inserted into a cylindrical pin (72) and embedded into the corresponding through grooves (81).

6. A moment-adjustable constant-pressure floor spring according to claim 1, 2 or 3, wherein: the plug (114) is an elastic cylindrical pin (72).

7. A moment-adjustable constant-pressure floor spring according to claim 1, 2 or 3, wherein: the excircle of the second piston (113) is provided with a groove, and a third sealing ring (115) is arranged in the groove.