CN2590785Y

CN2590785Y - Stepless angle regulating mechanism lock cylinder

Info

Publication number: CN2590785Y
Application number: CN 02284346
Authority: CN
Inventors: 徐彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-25
Filing date: 2002-11-25
Publication date: 2003-12-10
Anticipated expiration: 2012-11-25

Abstract

The utility model relates to a stepless angle adjusting mechanism lock cylinder, which belongs to the technical field of angle adjusting mechanisms, and the utility model mainly solves the problems of low adjusting precision and high production cost of the existing angle adjusting mechanisms. The utility model is characterized in that the stepless angle adjusting mechanism lock cylinder comprises a lock core inner cylinder and a lock core outer cylinder which is sheathed on the lock core inner cylinder with gaps, and two cylindrical helical springs are arranged in the gap between the lock core inner cylinder and the lock core outer cylinder. Both ends of the cylindrical helical spring are bent, one end is a fixed end and is fixed on the lock core inner cylinder, and the other end is a movable end and is arranged in a circumferential direction long slot of the lock core inner cylinder. The spiral direction of the two cylindrical helical springs is opposite, the outer diameter of the cylindrical helical spring is larger than the inner diameter of the lock core outer cylinder in a free state, and the cylindrical helical spring is tightly matched with the lock core outer cylinder after assembled. The utility model is mainly used for the angle adjusting mechanisms of motor vehicle seat backs and has the advantages of more precise angle adjustment and low production cost, and the utility model can replace the existing ratchet type seat back angle adjusting mechanisms.

Description

A kind of stepless angle adjusting mechanism lock core

Technical field

The utility model relates to a kind of lock core of stepless angle adjusting mechanism.The angular adjustment that can be used for the motor vehicle seat chair back also can be used for replacing various ratchet devices.Belong to the angle adjusting mechanism technical field.

Background technology

General-duty chair angle regulating mechanism has two types in the world at present.A kind of is the small teeth number difference planet gear transmission device, regulates backrest angle by rotation hand wheel.Its advantage is reliable transmission, step-less adjustment; Its shortcoming is: have gear backlash, governing speed is slow.Another kind is a ratchet device, by moving the handle release, with occupant's the health adjusting backrest angle that recedes.Its advantage is: no back lash, and governing speed is fast, and its shortcoming is to have level to regulate.More than the common drawback of two kinds of structures be: must have two gears to be meshed the tooling cost height.

Summary of the invention

The purpose of this utility model just provides a kind of simple for structure, replaces gear mesh with the spring friction, the step-less adjustment angle, and governing speed is fast, the stepless angle adjusting mechanism lock core that productive costs is low.

The scheme of the solution of technology of the present utility model is: a kind of stepless angle adjusting mechanism lock core, it is characterized in that: comprise that lock core inner core and gap are sleeved on the lock core urceolus on this lock core inner core, be provided with two cylindrically coiled springs (3,4) in the gap between this lock core inner core and lock core urceolus.Bend in these cylindrically coiled spring two ends, an end is a fixed end, is fixed on the lock core inner core; The other end is a movable end, is in the circumferential slotted hole of lock core inner core.The rotation direction of these two cylindrically coiled springs is opposite.The external diameter of cylindrically coiled spring is greater than the internal diameter of lock core urceolus under the free state, and assembling back cylindrically coiled spring and lock core urceolus are flush fit.

Because the utility model has adopted in the gap between lock core inner core and lock core urceolus two cylindrically coiled springs that rotation direction is opposite has been set, the equal tensioner of two springs is on the inwall of lock core urceolus, and the friction that one of them spring and lock core outer tube inner wall produce stops anti-its rotation direction of urceolus to be rotated; And the rotation direction of another spring is opposite, and it can stop urceolus to rotate in the opposite direction.So this structure has realized the latch functions of traditional ratchet, an end of this cylindrically coiled spring is fixed on the lock core inner core, and another movable end is in the circumferential slotted hole on the lock core inner core, can circumferentially move in the slotted hole.The movable end that drives two springs when the operation release mechanism is along circumferentially moving when spring diameter is dwindled, and the friction between two springs and the lock core urceolus is eliminated, and the lock core urceolus just can be with respect to the stepless rotation of lock core inner core, realization step-less adjustment angle function.When discharging release mechanism, then the friction between two springs and the lock core urceolus recovers again, and the lock core urceolus is got back to the trivial state that ends.The utility model can substitute existing ratchet-type chair angle regulating mechanism fully, because the utility model has adopted the spring friction to replace ratchet engaged, so productive costs reduces greatly.

Description of drawings

Fig. 1 is a local structure cross-sectional schematic of the present utility model; Fig. 2 is the left view of Fig. 1; Fig. 3 is the Q-Q cutaway view of Fig. 2, also is keystone configuration scheme drawing of the present utility model; Fig. 4 is the M-M cutaway view of Fig. 1; Fig. 5 is the N-N cutaway view of Fig. 1; Fig. 6 is the P-P cutaway view of Fig. 1.

The specific embodiment

Among Fig. 1, cylindrically coiled

spring

3 and 4 is enclosed within the gap between lock core inner core 1 and the lock core urceolus 2 side by side.The wall of lock core inner core 1 is provided with

aperture

18,19, and the center of aperture 18 is on the M-M longitudinal plane; The center of aperture 19 is on the P-P longitudinal plane, can see that from Fig. 4 and Fig. 6 the center of

aperture

18,19 is on the horizontal central plane of lock core inner core 1, respectively in the both sides of the vertical central plane of lock core inner core 1.The centerline that also is provided with two circumferential

slotted hole

20,21, two circumferential slotted

holes

20,21 on the wall of lock core inner core 1 is on the N-N longitudinal plane, and two circumferential slotted

holes

20,21 are about this vertical central plane symmetry at lock core inner core 1 as can see from Figure 5.

Among Fig. 3, lock core inner core 1, lock core urceolus 2 and cylindrically coiled

spring

3,4 coaxial being nested.Plate washer 5,6 is separately fixed at the two ends of lock core inner core 1, stops outer lock core urceolus 2 to move axially.Be provided with gap 11,12 between the end face of plate washer 5,6 and lock core urceolus 2, so that lock core urceolus 2 rotates around lock core inner core 1.Circular cover 7,8 is separately fixed at the two ends of lock core inner core 1, and its centre hole 9,10 is coaxial with lock core inner core 1.Release mechanism comprises turning cylinder 13, cam 14, half cup shape slide plate 15 and connecting pin 16.Insert in the centre hole 9,10 of circular cover 7,8 at the two ends of turning cylinder 13, rotatable; Turning cylinder 13 is coaxial fixing with cam 14.The internal diameter of the external diameter of cam 14 and lock core inner core 1 is a free-running fit.Cam 14 is provided with one section annular opening 26 as can see from Figure 5, and the center of circle of this annular opening 26 separates mutually with the cam center of circle.Connecting pin 16 passes annular opening 26, and the bottom of its small end and half cup shape slide plate 15 is fixed.Connecting pin 16 can slide in annular opening 26, and cam 14 can slide relative with half cup shape slide plate 15.The external diameter of half cup shape slide plate 15 is more smaller than the internal diameter of lock core inner core 1 as can see from Figure 5, half cup shape slide plate 15 can be along T to the certain distance of translation, the bottom of half cup shape slide plate 15 is provided with semicircle breach 30, is convenient to half cup shape slide plate 15 and gets out of the way turning cylinder 13 when the translation along T.

Among Fig. 4 to Fig. 6, the fixed

end

22,23 of cylindrically coiled

spring

3,4 is fixed in the

aperture

18,19 of lock core inner core 1, and tensioner is on the inwall of lock core urceolus 2, and it is opposite to be provided with gap 29, two springs, 3,4 rotation directions between two

springs

3,4 and the inner core 1.Friction between cylindrically coiled spring 3 and the lock core urceolus 2 stop lock core urceolus 2 to L to rotation; Friction between cylindrically coiled spring 4 and the lock core urceolus 2 stop lock core urceolus 2 to R to rotation, this moment, lock core urceolus 2 was in lockup state with respect to lock core inner core 1.The

movable end

24,25 of cylindrically coiled

spring

3,4 stretches in the cavity volume of lock core inner core 1 by circumferential slotted hole 20,21.The

movable end

24,25 of cylindrically coiled

spring

3,4 is hooked in two

sides

27,28 of half cup shape slide plate 15.When the

movable end

24,25 of cylindrically coiled

spring

3,4 by to T during to tension, cylindrically coiled

spring

3,4 directly through dwindling, and the friction between the lock core urceolus 2 eliminates, lock core urceolus 2 is unlocked, and can rotate around lock core inner core 1.When along R to rotation during turning cylinder 13, cam 14 rotates together, on the cam 14 annular opening 26 driving connecting pins 16 and half cup shape slide plate 15 to T to slip.The two

sides

27,28 of half cup shape slide plate 15 force the

movable end

24,25 of cylindrically coiled

spring

3,4 to slide the release of this mechanism together; Discharge turning cylinder 13, the then movable end resilience of cylindrically coiled

spring

3,4, half cup shape slide plate 15 is forced to get back to original position with cam 14, and the friction between cylindrically coiled

spring

3,4 and the lock core urceolus 2 also recovers, and lockup state is got back to by this mechanism.

Among Fig. 2, adapter plate 17 is fixing with lock core urceolus 2.The baffle plate 5 and the seat support of seat are fixed, the adapter plate 17 and the backrest of seat are fixed.When along R to rotation during turning cylinder 1, the release of this mechanism can stepless adjustment backrest angle.When discharging turning cylinder 13, this mechanism locking, backrest are fixed on certain angle, finish backrest angle and regulate.

Version of the present utility model shown in the figure and that the front is introduced is just given an example, and the utility model never is subjected to restriction for example.Can do various modifications and other designs to theme of the present utility model on the contrary.In addition, all new features of representing in specification sheets and/or accompanying drawing even clearly do not propose as claim at claims of submitting to, also are important contents of the present utility model.

Claims

1, a kind of stepless angle adjusting mechanism lock core, it is characterized in that: comprise that lock core inner core (1) and gap are sleeved on the lock core urceolus (2) on this lock core inner core (1), are provided with two cylindrically coiled springs (3,4) in the gap between this lock core inner core (1) and lock core urceolus (2); Bend in this cylindrically coiled spring (3,4) two ends, an end is a fixed end, is fixed on the lock core inner core (1); The other end is a movable end, is in the circumferential slotted hole (20,21) of lock core inner core (1); The rotation direction of these two cylindrically coiled springs (3,4) is opposite; The external diameter of cylindrically coiled spring under the free state (3,4) is greater than the internal diameter of lock core urceolus (2), and assembling back cylindrically coiled spring (3,4) is a flush fit with lock core urceolus (2).