CN2823665Y

CN2823665Y - Snake spring

Info

Publication number: CN2823665Y
Application number: CN 200520064702
Authority: CN
Inventors: 李德锵
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-20
Filing date: 2005-09-20
Publication date: 2006-10-04
Anticipated expiration: 2015-09-20

Abstract

The utility model is snake-shaped spring which is formed by bending a spring steel wire in a mode of forward and reverse alternation as a U shape, wherein the U-shaped directions of the head part and the tail part of the spring are opposite, and U-shaped rods (1, 2) of the head part and the tail part are respectively bent downwards from the point of a cross connecting part of rods (1a, 2a) of the inner side and a contiguous reverse U-shaped bending position; thus, planes (S1, S2) which are parallel to a plane in which a circuitous bending spring of the middle part is positioned can be formed. The middle parts of the outer sides of the U-shaped rods of the head part and the tail part are respectively provided with supporting grooves (B1), (B2) which are bent in a concave way and are respectively positioned at concave faces (S1) and (S2) of the U-shaped rods of the head part and the tail part, and the concave directions of the concave supporting grooves (B1) and (B2) are opposite. The snake-shaped spring with an improved shape has the simple structure, and the utility model can be connected with other springs and connecting pieces in series to form a bed cushion or a seat cushion with the advantages of good stability and convenient folding. Thereby, the bed cushion or the seat cushion can be folded into small volume. The utility model has the advantages of portability, and convenient use and collection.

Description

A kind of serpentine spring

Technical field

The utility model belongs to a kind of spring, especially for the spring of making elastic bed net or seat cushion.

Background technique

Common elastic bed net or seat cushion are with spring fastenings spring to be connected to combine, and at present, mattress or the seat cushion made of spring mostly can not fold, and cause mattress or seat cushion volume big, carry, collect very inconvenient.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of simple in structure, and the spring of good stability can be connected with other spring fastenings with this spring and to make Foldable bedding or seat cushion.

The technological scheme that addresses the above problem is (referring to implementing illustration): the utility model is the circuitous bending of forward and reverse U-shaped that replaces by a Spring Steel Wire and forms, the U-shaped direction of spring head and the tail is opposite, initial and end portion U-shaped bar (1,2) side lever (1a in it respectively, 2a) recessed with (A1, A2) some bending at the crosslinked place of adjacent inverted U-shaped crooked position, form plane (S1 with circuitous plane, flexural spring place (S), middle part almost parallel, S2), at initial and end portion U-shaped bar (1,2) outboard beam middle part is respectively equipped with and its plane, place (S1, S2) recessed direction unanimity Shape bends recessed support slot (B1), (B2), lay respectively on the initial and end portion U-shaped bar (1,2) recessed (S1) with (S2), The recessed support slot of shape (B1) with (B2), relatively the recessed direction on circuitous plane, flexural spring place (S), middle part is opposite separately.

Describedly lay respectively on the initial and end U-shaped bar and recessed (S1) that recessed direction is opposite and (S2), and

Recessed support slot of shape (B1) and concave amount (B2) equate, and be described The recessed support slot of shape (B1), (B2) plane, place and plane, middle bent spring place (S) approximate vertical.

Described recessed (S1) and (S2), and

" recessed " on circuitous plane, flexural spring place (S), the relative middle part with (B2) of the recessed support slot of shape (B1) also can be stated to being relative " projection " of being somebody's turn to do " S " plane, and its technical spirit is identical.

The serpentine spring of the utility model improved shape is simple in structure, can be chained together with other spring and link with it and to make good stability, the bed net or the seat cushion of folding convenient, thus make whole mattress or the collapsible smaller volume of drawing in into of seat cushion, use and carry, collect conveniently

Description of drawings

Fig. 1, the utility model example structure schematic representation

The collapsible spring unit bed net assemblying body that Fig. 2, Fig. 1 embodiment and other spring and spring fastenings connect into

The folding rounding state figure of Fig. 3, Fig. 2

Side lever in the side lever 2-afterbody U-shaped bar 2a-afterbody in the 1-stem U-shaped bar 1a-stem

3-the utility model serpentine spring 4-spring fastenings 5-serpentine spring

A1, recessed support slot S, S1, the S2-plane of A2-inflection point B1, B2-

Specific embodiments

As shown in Figure 1, this example is the circuitous bending of forward and reverse U-shaped that replaces by a Spring Steel Wire and forms U " the figurate number amount is the amount doesn't matter, and quantity many springs height more is high more, and quantity is few more, and the spring height is short more; The U-shaped direction of spring head and the tail is opposite, stem U-shaped bar 1 from its in the A1 point of side lever 1a and adjacent inverted U-shaped curved part cross-linking part recessed, make the U-shaped bar 1 of stem make a circulation flexural spring place face not in one plane with the middle part, and formation and the parallel planar S 1 of middle part spring face S, be provided with consistently at stem U-shaped bar 1 outboard beam middle part, form by two backfins of the body of rod are curved with the recessed direction in plane, place

The recessed support slot B1 of shape, planar S 1 is lower than planar S, and support slot B1 is lower than described planar S 1 again; Afterbody U-shaped bar 2 structures opposite with stem U-shaped bar 1 opening direction are identical with stem U-shaped bar 1, just its recessed S2 and Corresponding recessed S1 of the recessed support slot B2 of shape and stem U-shaped bar and The recessed direction of the recessed support slot B1 of shape is opposite.

Describedly lay respectively on the initial and end U-shaped bar and the concave amount of recessed direction is opposite recessed S1 and S2 equates that be about 2～5 millimeters, the concave amount of recessed support slot B1 of bending and B2 equates, and is described The recessed support slot B1 of shape, plane, B2 place are vertical substantially with the planar S at middle bent spring place.

The collapsible spring unit bed net combination (being applied for a patent separately on the same day by the applicant) that Fig. 2 connects into for this routine serpentine spring 3 and link 4 (being applied for a patent separately on the same day by the applicant) and serpentine spring 5, Fig. 3 is the folding rounding state of spring assembly shown in Figure 2.

When this routine structure can make itself and other spring and link polyphone, can allow serpentine spring 5 pass through, can make this serpentine spring balance 3 about again, increase stable; The concave amount of bending recessed S1, the S2 of this routine serpentine spring head and the tail U-shaped bar 1,2 can not too greatly can not be too little, and thickness was too big when too conference made mattress or seat cushion folding, the too little stability that can influence spring assembly again.

Claims

1, a kind of serpentine spring, being the circuitous bending of forward and reverse U-shaped that replaces by a Spring Steel Wire forms, it is characterized in that: the U-shaped direction of spring head and the tail is opposite, initial and end portion U-shaped bar (1,2) side lever (1a in it respectively, 2a) recessed with (A1, A2) some bending at the crosslinked place of adjacent inverted U-shaped crooked position, form plane (S1 with circuitous plane, flexural spring place (S), middle part almost parallel, S2), at initial and end portion U-shaped bar (1,2) outboard beam middle part is respectively equipped with and its plane, place (S1, S2) recessed direction unanimity

Shape bends recessed support slot (B1), (B2), lay respectively on the initial and end portion U-shaped bar (1,2) recessed (S1) with (S2),

The recessed support slot of shape (B1) with (B2), relatively the recessed direction on circuitous plane, flexural spring place (S), middle part is opposite separately.

2, serpentine spring according to claim 1 is characterized in that: described laying respectively on the initial and end U-shaped bar, and opposite recessed (S1) of recessed direction and (S2), and Recessed support slot of shape (B1) and concave amount (B2) equate, and be described The recessed support slot of shape (B1), (B2) plane, place and plane, middle bent spring place (S) approximate vertical.

3, serpentine spring according to claim 2 is characterized in that: described laying respectively on the initial and end U-shaped bar, and opposite recessed (S1) and the concave amount (S2) of recessed direction is about 2～5 millimeters.