CN2202820Y

CN2202820Y - Hydraulic adjusting lock

Info

Publication number: CN2202820Y
Application number: CN 93243802
Authority: CN
Inventors: 王昌言; 于胜钧; 张美玲; 王勇; 杨建超; 朱勤华
Original assignee: 610 Institute Of Aeronautics And Astronautics
Current assignee: 610 Institute Of Aeronautics And Astronautics
Priority date: 1993-10-30
Filing date: 1993-10-30
Publication date: 1995-07-05
Anticipated expiration: 2003-10-30

Abstract

The utility model provides a hydraulic regulation lock which uses a shell, shafts, a connecting head and an elastic force device to cause the entire mechanism to be connected together, wherein, a seal oil chamber is formed between a hollow shaft sheathed in the shell and the shell, an oil chamber piston is arranged on the hollow shaft, oil passing holes are arranged at both sides of the oil chamber piston, and a gate of an oil circuit is locked by a steel ball. A control rod is used for opening and locking the gate of the oil circuit so as to regulate the length of a hydraulic lock and fix the hydraulic lock. The utility model adopts stepless regulation with bearing capacity of 13348 N, has the advantages of wide-range usage, long life which is more than 20 thousand cycles, small volume, light weight, easy installation and flexible and safe operation, and is suitable for the regulation of seats and backrests of civil aviation, motor cars, ships, etc.

Description

Hydraulic adjusting lock

The utility model is the hydraulic regulation lock, belongs to the hydraulic control system device, is applicable to the seat of civil aviaton's seat, coach luxury coach, the backrest of yacht seat and the adjusting that pin leans on.

The seat back recliner of Shi Yonging generally adopts mechanical type in the market.The adjusting characteristics of this regulator are: by moving operating grip, make the regulator gear be in relaxation state, regulate backrest, make it be in satisfied angle by external force, and release handle, gear is fixed, and backrest is fixed.It is little that this controlling device has a bearing capacity, and working life is short, higher to installation requirement, regulate deficiency such as inconvenience.

The purpose of this utility model be to overcome clothes the deficiency of technology is arranged and provide that big, the in light weight volume of a kind of bearing capacity is little, easy for installation, the stepless regulator of flexible operation, long service life.

The technical solution of the utility model is: utilize shell, axle, coupling head, elastic force apparatus that entire mechanism is linked up; Between two oil pockets throttle is arranged in the lock body.Control it and be communicated with and sealing, throttle is controlled by steel ball.Open throttle by the operation controlling rod, the two ends oil pocket is communicated with, and with defeating elastic force apparatus outward, just can regulate the length of hydraulic lock, so that satisfied angle, the unclamp operation controlling rod makes throttle on the steel ball lock, the two ends oil pocket is fixed, and hydraulic lock can not be regulated, and is conditioned object and is fixed on a certain position.The utility model housing has Connecting jont outward, in order to connect the object that needs adjusting; Housing is with elastic force apparatus, sleeve, stroke snap ring outward, to connect housing and hollow shaft; Hollow shaft is contained in the housing, constitutes oil pocket between housing and the hollow shaft; The oil pocket upper and lower end is sealed by stuffing box gland; The oil pocket piston is arranged on the hollow shaft, and the oil pocket piston is positioned at oil pocket, and there is oil-through hole oil pocket piston both sides, and oil-through hole is communicated with the center hole of oil pocket, hollow shaft; Be installed with controlling rod in the center hole of hollow shaft, controlling rod pushes up mutually with interior spring, the steel ball of center hole and hollow shaft lower end hollow cavity, opens and block the oil circuit throttle with steel ball.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the partial enlarged drawing of Fig. 1.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Among Fig. 1, hydraulic regulation is locked by coupling head 1 and housing 2 scyewed joint, housing 2 and sealing bolt 3 scyewed joint, and seal ring 4 is contained in the sealing bolt 3, and ring washer 5 is contained on the housing 2, works to stop packing ring 6; Big spring 8 is contained in shell 2 shells not near packing ring and sleeve card 28, and seal ring 9 is contained in the oil pocket sealing head 10, and sealing head 10 is contained in the axle 24 near oil pocket top bolt 36; In the sealing head 29, logical oil jacket 12 was contained in the axle 24 near interior sealing head 29 in seal ring 11 was contained in; Stuffing box gland 37, seal ring 7, seal ring 38, stuffing box gland 14, seal ring 13, seal ring 15 be seal oil chamber between housing 2 and axle 24, stuffing box gland 37 1 ends near seal ring 39, one ends near oil pocket; Stroke card 16 is contained on the stroke snap ring 25, and plastic sleeve 17 is enclosed within outside sleeve card 28 and the catch 18, and nut 19 is contained on the axle 24 and plays the role of positioning.Seal washer 20, seal ring 21 are contained in 24 on axle and go up near plug 22, axle 24 is that a hollow shaft runs through entire mechanism, middle cover controlling rod 23, stroke snap ring 25 is enclosed within hollow shaft 24 outsides, near sleeve card 28 and catch 18, nylon washer 26 is contained in hollow shaft 24 appearances and shell inner surface, near sleeve card 28 and back-up ring 40, sleeve card 28 is contained in table in housing 2 appearances and the plastic sleeve 17, there is interior sealing head 29 at hollow shaft 24 middle parts, interior sealing head 29 middle cover controlling rods 23 and near logical oil jacket 12 and spring housing 35.Guard circle 30, seal ring 31 are contained in the oil pocket piston of axle, near shell inner surface, play the seal action between the oil pocket of two ends.Steel ball seat 33 and steel ball 32 are near interior sealing head 29 coaxial 24 center holes and controlling rod 23 jack-up throttle effect mutually, steel ball seat 33 is near steel ball 32 and little spring 34, little spring 34 is enclosed within the spring housing 35, near steel ball seat 33 and oil pocket fore-set 36, oil pocket fore-set 36 is enclosed within the hollow shaft 24 near oil pocket sealing head 10, spring 34 and spring housing 35; Stuffing box gland 37 is contained in axle 24 appearances, and near oil pocket, back-up ring 40 is contained on the housing 2 near nylon washer 36 end, plays the role of positioning near seal ring 39, one ends.

Among Fig. 2, for the oil pocket 41 of sealing, on the axle 24 oil pocket piston 42 is arranged between hollow shaft 24 and the housing 2, there is the oil-through hole 43,44 that is communicated with oil pocket 41, axle 24 center holes 45 oil pocket piston 42 both sides; In the axle 24 lower end hollow cavities 46 spring housing 35 is arranged, spring 34, steel ball 32 are arranged in the spring housing 35; Controlling rod 23 pushes up with spring 34, steel ball 32 mutually with center hole 45, to block and to open oil pocket oil circuit throttle.Press steel ball 32 by controlling rod 23, oil-through hole 43,44 connects the oil circuit of lower oil cavitie by the gap of center hole 45 and controlling rod 23, use outer force compresses big spring 8, the both sides oil pocket is adjusted in the displacement of oil pocket piston 42 in oil pocket that drives axle 24, to reach satisfied requirement, unclamps controlling rod 23, little spring 34 power make steel ball 32 lock throttle again, the two ends oil pocket is fixed, and hydraulic lock can not be regulated, thereby object is fixed.The main performance index of the foregoing description is: maximum elongation state length 268 ± 1mm, the largest contours external diameter is not more than 40mm, range 30mm, limit load: 13348N(pressure), maximum elongation state ouput force: 156N, most compressed state ouput force 392N, operating handle action force: 10～15N, stroke gap: be not more than 0.2mm, 0.37 kilogram of weight, working life: be not less than capable hour of 20,000 tasks circulation flight, 9000 districts.

During use, the utility model coupling head is linked to each other with transferring object (chair back).Handle controlling rod and push throttle, it is opened after, two oil pockets are communicated with, the occupant is with the pressured chair back in back, force in chair back hypsokinesis and regulate the lock shortening, after chair back angle is satisfied, unclamp controlling rod, throttle restores, the sealing of two oil pockets is regulated lock length and is fixed, thereby the chair back is fixed; If need regulate the chair back forward, at first open throttle, the occupant leaves the chair back in the back, and the big spring of regulating lock forces the lock body elongation to promote the chair back and rotates, after chair back angle is satisfied, unclamp controlling rod, and the locking of backrest lock is fixed the chair back.

The utility model compared with prior art has the following advantages:

1, the anti-power of carrying is big, and maximum load capacity of the present utility model is 13348N, and existing skill The maximum load capacity of art is 960N.

2, volume is little, in light weight, easy for installation.

3, manoeuvrable, safe and reliable regulate because of adjusting of the present utility model belongs to hydraulic stepless, and prior art belongs to grade adjusting that has of machinery.

4, purposes is wide, and the life-span is long, and the utility model can be used for civil aviaton's seat, automotive seat, and the boats and ships seat, the life-span is greater than 20000 circulations, and prior art only can be used on the automotive seat.

5, added value height, because of the utility model belongs to high-tech product, and prior art belongs to labor-intensive product.

Claims

1, a kind of hydraulic regulation lock is characterized in that outer elastic force apparatus (8), plastic sleeve (17), the stroke snap ring (25) that Connecting jont (1) is arranged, connect housing (2) and quill shaft (24) of housing (2); Be enclosed within the oil pocket (41) that constitutes sealing between interior hollow shaft (24) of housing (2) and the housing (2), oil pocket piston (42) is arranged on the hollow shaft (24), and there is the oil-through hole (43,44) that is communicated with the center hole (45) of oil pocket, hollow shaft (24) oil pocket piston (42) both sides; Be installed with controlling rod (23) in the axle (24), controlling rod (23) pushes up mutually with interior spring, the steel ball of center hole (45) and axle (24) lower end hollow cavity (46).

2, adjusting lock as claimed in claim 1, it is characterized in that being sealed between axle (24) and the housing (2): seal ring (4) is contained in the sealing bolt (3), and sealing bolt (3) is contained on the inwall of housing (2) lower end; Oil pocket (40) two ends have lower sleeve gasket (37), upper sleeve gasket (14) respectively, and seal ring (7,38,13,15) is arranged respectively in the upper and lower stuffing box gland (37,14).Lower sleeve gasket (37) one ends have nylon washer (39), sealing bolt (3), and upper sleeve gasket (14) one ends have abutment sleeve (27).

3, adjusting lock as claimed in claim 1 is characterized in that seal ring (31), seal protection circle (30) are arranged in the said oil pocket piston (41).

4, adjusting lock as claimed in claim 1, it is characterized in that there is oil pocket sealing head (10) said hollow shaft (24) lower end, seal ring (9) is arranged in the oil pocket sealing head (10), there is plug (22) hollow shaft (24) upper end, seal washer (20) is arranged, seal ring (21) in the plug (22).

5, adjusting lock as claimed in claim 1 is characterized in that said controlling rod (23), is with interior sealing head (29) outside its lower end, and seal ring (11) is arranged in the interior sealing head (29).