CN201171513Y

CN201171513Y - Slide bar type compensator

Info

Publication number: CN201171513Y
Application number: CNU2008200457939U
Authority: CN
Inventors: 李海彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-27
Filing date: 2008-03-27
Publication date: 2008-12-31
Anticipated expiration: 2018-03-27

Abstract

The utility model relates to a slide bar type telescopic unit which comprises a slide bar, a plurality of positioning slots, a slide sleeve and an elastic locking member, wherein, the positioning slots are arranged in the length direction of the slide bar which is sleeved with the slide sleeve in a sliding way; the elastic locking member clamping the slide bar is connected with the slide sleeve and forms an axial fixed connection relation with the slide sleeve. The slide bar type telescopic unit is characterized in that the elastic locking member comprises two clamping pieces which are enclosed by a metal spring ring with radial shrinkage force to form a spring clamp with a radial opening; the elastic clamping force of the two clamping pieces to the slide bar depends on the elasticity of the metal spring ring, and the two clamping pieces can be free from deformation. The slide bar type telescopic unit not only solves the problem that the clamping pieces in the slide bar type telescopic unit are easy to fatigue, but also can ensure the clamping pieces to be short and small without requirement for the deformation of the clamping pieces; thus, the slide bar type telescopic unit is favorable to the miniaturization of the slide bar type telescopic unit and is suitable for the needs of different products.

Description

The slide bar type expansion bend

Technical field

The utility model relates to the accessory that uses in furniture such as sofa, automotive seat, Automobile Products, particularly in order to regulate the slide bar type expansion bend of certain parts position in the product.

Background technology

In furniture such as sofa, automotive seat, Automobile Products, often use a kind of slide bar type expansion bend, the user regulates the position of certain parts in the product by the stroke of regulating the slide bar type expansion bend, for example regulates the height of chair headrest.This slide bar type expansion bend comprises a slide bar, is arranged with a plurality of locating slots along the length direction of slide bar, and slip cap is connected to a sliding sleeve on slide bar, and axial restraint has the elasticity locking member that clips slide bar on sliding sleeve.In the prior art, described elasticity locking member comprises a slip ring that is enclosed within on the slide bar, and global formation has the intermediate plate of at least two strips on the one-sided end face of slip ring, and all intermediate plates surround a long tubular chuck that surrounds slide bar.Each bar intermediate plate is equivalent to a single-ended fixing cantilever lever, has certain length and allows generation elastic bending deflection to a certain degree thereby the deformability of intermediate plate depends on intermediate plate.This design feature has determined the length of intermediate plate can not do very shortly, also just is difficult to further miniaturization.And intermediate plate all is made of plastics with slip ring usually together, and the intermediate plate root is easy to take place tired near the position of slip ring, cause intermediate plate elastic failure even fracture, and this defective is more outstanding when using in low temperature environment especially.At fatigue problem, the patent No. is 200520061411.8, name is called the utility model patent of " a kind of furniture lifter locking device ", set up one and be enclosed within the outer becket of long tubular chuck, (" locking device " of this patent is exactly " elasticity locking member " as herein described to rely on becket that the effect of contraction of intermediate plate is alleviated the degree of fatigue of intermediate plate, " tapered end " of this patent is exactly " slip ring " as herein described, " lock body " of this patent is exactly " long tubular chuck " as herein described, and " the arc elastic component " of this patent is exactly " intermediate plate " as herein described).But this patent does not fundamentally change the design feature of intermediate plate self, and the deformability of intermediate plate still depends on intermediate plate and has certain length, and intermediate plate still can occur bending and deformation, and the intermediate plate root still is the easiest tired position that takes place.So this patent does not thoroughly solve the fatigue problem of intermediate plate yet.

Summary of the invention

The purpose of this utility model provides a kind of slide bar type expansion bend that can thoroughly solve the intermediate plate fatigue problem.

The utility model is achieved in that the slide bar type expansion bend comprises a slide bar, length direction along slide bar is arranged with a plurality of locating slots, slip cap is connected to sliding sleeve on slide bar, be connected with the elasticity locking member that clips slide bar with sliding sleeve, elasticity locking member and sliding sleeve constitute the axial restraint annexation, and especially, described elasticity locking member comprises two intermediate plates, two intermediate plates are had the metal spring circle encirclement of radial contraction power, constitute a spring clip of dehiscing to be oriented radially.Because dehiscing towards being radially of spring clip, two intermediate plates depend on the elastic force of metal spring circle to the elasticity clamping force of slide bar, and two intermediate plates itself can not deform, so the utility model has thoroughly solved the fatigue problem of intermediate plate.

The utility model has the advantages that the tired easily problem of intermediate plate that has not only solved in the slide bar type expansion bend, and owing to do not require that intermediate plate deforms, so can cook intermediate plate short and small, help the miniaturization of slide bar type expansion bend, adapt to the needs of different product.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the elasticity locking member among Fig. 1 and the A-A cutaway view of slide bar;

Structural representation when Fig. 3 is the open-shaped attitude of the elasticity locking member among Fig. 2;

Fig. 4 is the another kind of structural representation of elasticity locking member;

Fig. 5 is the another kind of frame mode of elasticity locking member axial restraint on sliding sleeve;

Fig. 6 is the structural representation that the elasticity locking member of two different structures is installed in a slide bar type expansion bend.

The specific embodiment

Referring to Fig. 1, the slide bar type expansion bend comprises a slide bar 1, is arranged with a plurality of locating slots 2 along the length direction of slide bar 1.Slip cap is connected to a sliding sleeve 3 on slide bar 1.Axial restraint has the elasticity locking member 4 that clips slide bar 1 on sliding sleeve 3.This slide bar type expansion bend in use, two needs that its slide bar 1 and sliding sleeve 3 are separately fixed in the product such as seat are regulated on the parts of relative positions, regulate the relative position of two parts by regulating the position of sliding sleeve 3 on slide bar 1.For example slide bar 1 is fixed on the headrest of seat, sliding sleeve 3 is fixed on the backrest of seat, can regulate the height of headrest by the relative position of regulating sliding sleeve 3 and slide bar 1.In the process of regulating sliding sleeve 3 positions, when elasticity locking member 4 is just pinched some locating slots 2 on the slide bar into as shown in Figure 1, just be equivalent to sliding sleeve 3 is locked in the position at this locating slot place.Characteristics of the present utility model are the structure of elasticity locking member 4.Referring to Fig. 1, Fig. 2, elasticity locking member 4 comprises that 5,6, two intermediate plates of two intermediate plates are had metal spring circle 7 encirclements of radial contraction power, constitute a spring clip simultaneously.The dehiscing of spring clip is oriented radially, that is leaves locating slot 2 when elasticity locking member 4, makes that when two intermediate plates were open as shown in Figure 3, spring clip resembled the face that a radial direction from slide bar 1 is bitten slide bar 1.The elasticity clamping force of 5,6 pairs of slide bars 1 of two intermediate plates depends on the elastic force of metal spring circle 7, and two intermediate plates itself can not deform.

Two

intermediate plates

5,6 can be made of plastic, available viscose bonding between intermediate plate and the metal spring circle 7.For preventing that metal spring circle 7 from coming off, can make metal spring circle 7 be partially submerged in the

intermediate plate

5,6 as shown in Figure 1.In two intermediate plates and metal spring circle are assembled together, can between two

intermediate plates

5,6, be connected with flexible link belt 8 as shown in Figure 4 for convenience.Flexible link belt 8 links together two

intermediate plates

5,6, is convenient to the assembling of metal spring circle 7, can not have influence on the opening and closing action of two intermediate plates simultaneously again.Flexible link belt 8 can be the plastic tape with two

intermediate plate

5,6 global formations, or is to stick in two plastic tape or straps, fabric strip on the intermediate plate.

The axial restraint mode of elasticity locking member 4 on sliding sleeve 3 can have multiple.In the embodiment shown in fig. 1, the end thread of sliding sleeve 3 is connected with a nut 9 (with dotted line reduced representation screw thread), and nut 9 inside have cavity 10.Between nut 9 and sliding sleeve 3 end faces, accompany one grade of ring 11.Nut 9 and shelves ring 11 are encapsulated in elasticity locking member 4 in the cavity 10 of nut together, constitute the axial restraint annexation of elasticity locking member 4 and sliding sleeve 3 with this.In another embodiment shown in Figure 5, elasticity locking member 4 is axially fixed in the sliding sleeve 3 by nut 12 and back-up ring 13, back-up ring 13 can be welded in the sliding sleeve 3 or with sliding sleeve 3 global formations.

Though the utility model improves the elasticity locking member in the existing slide bar type expansion bend; but still the elasticity locking member after elasticity locking member of the prior art and the utility model improvement can be assembled in the same slide bar type expansion bend, so still belong to protection domain of the present utility model.For example in slide bar type expansion bend shown in Figure 6, be connected with two elasticity locking members simultaneously with sliding sleeve 3, wherein elasticity locking member 4 is exactly the elasticity locking member described in Fig. 1 to Fig. 5, and another elasticity locking member 14 is exactly No. 200520061411.8 disclosed elasticity locking members of patent.Adopt the slide bar type expansion bend of this structure still to belong to protection domain of the present utility model.

Claims

1, a kind of slide bar type expansion bend, comprise a slide bar, length direction along slide bar is arranged with a plurality of locating slots, slip cap is connected to sliding sleeve on slide bar, be connected with the elasticity locking member that clips slide bar with sliding sleeve, elasticity locking member and sliding sleeve constitute the axial restraint annexation, and it is characterized in that: described elasticity locking member comprises two intermediate plates, two intermediate plates are had the metal spring circle encirclement of radial contraction power, constitute a spring clip of dehiscing to be oriented radially.

2, slide bar type expansion bend as claimed in claim 1 is characterized in that: be connected with flexible link belt between described two intermediate plates.