CN202184450U - Headrest adjusting device - Google Patents

Abstract

A headrest adjusting device is characterized in that a headrest slide rail extended upwards from a chair back is inserted in headrest grooves formed on the inner sides of headrests and having openings facing downwards; a slide rail hollow groove running through in the fore-and-aft direction is formed at the center of the headrest slide rail in the vertical direction; a plurality of round locking groove holes are formed on the slide rail hollow groove; the diameter of each locking groove hole is greater than the width of the slide rail hollow groove; a strip-shaped knob flat convex shaft which is in the center of an adjusting knob passes through the slide rail hollow groove and is connected to the inner sides of the headrests; the length of the long side of the flat cross section of the knob flat convex shaft is greater than the width of the slide rail hollow groove and slightly smaller than the diameter of each locking groove hole, and the width of the short side is slightly smaller than that of the slide rail hollow groove; when the knob flat convex shaft is positioned in the position of one locking groove hole, and the long side is in the horizontal state, the headrests are in a locked state; and when the short side of the knob flat convex shaft in the adjusting knob is in the horizontal state, the headrests are in a state of being capable of being moved and adjusted. The device improves the safety of a product, reduces the product cost and can be applied to headrest adjustment of automobile safety seats for children and other seats.

Description

A kind of head rest adjusting device

Technical field

The utility model relates to a kind of head rest adjusting device, has especially adopted the head rest adjusting device of head rest slide rail.

Background technology

The head rest adjusting device of general existing employing head rest slide rail; The head rest slide rail is inserted in inner the going and seeking refuge with in the groove of head rest; Head rest can move up and down along the head rest slide rail; Inside has the lock adjustment device that the position of head rest is locked or unclamps, and more spring part or the sheet screens structure of relating to of existing multiple adjusting device, structure comparatively complicacy and reliability are relatively poor.

Summary of the invention

The utility model is to provide a kind of framework simple head rest adjusting device, and this head rest adjusting device lock adjustment device only has the adjusting parts of an integral body, and is simple in structure and firm.

For solving the problems of the technologies described above; This utility model provides a kind of head rest adjusting device; Head rest slide rail, band groove head rest and adjusting knob by extend chair back top are formed, and in the groove that said head rest slide rail insert head leans on, the vertical orientation of head rest slide rail has strip slide rail groove; Be arranged with several circular locking slotted eyes on the slide rail groove, the adjusting knob center has the flat protruding axle of strip to pass the slide rail groove to be connected head rest inside.

The diameter of aforementioned locking slotted eye is greater than the width of slide rail groove; The flat protruding axle of the strip at aforementioned adjusting knob center; The long edge lengths in its flat cross section is slightly less than the diameter of locking slotted eye greater than the width of slide rail groove, its minor face width is slightly less than the width of slide rail groove; When adjusting knob was positioned at the long limit in locking slotted eye center and flat cross section and is in a horizontal position, the slide rail groove was pinned on long limit, and adjusting knob can not move together with band groove head rest and be lock-out state this moment; When the rotation adjusting knob made long limit, flat cross section become the upright position, adjusting knob can move up and down in the middle of strip slide rail groove, and be with the groove head rest this moment is adjustment state moving up and down.

There is the knob hole position of exposing at aforementioned band groove head rest rear, and is used for installing and regulating adjusting knob.

Can respectively there be a stopper slot slide rail groove left and right sides of aforementioned head rest slide rail, in stopper slot, can have limited block to run through stopper slot and is fixed on the head rest inside grooves, to its further reinforcement effect of overall structure.

Contrast head rest adjusting device in the past, the adjusting parts of the utility model are merely an adjusting knob, and parts such as slide rail groove are overall structure, and therefore, the utility model is not only simple in structure, and is sturdy and durable, also simplified manufacturing process.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is explained further details.

Fig. 1 is the STRUCTURE DECOMPOSITION figure of first kind of embodiment of the utility model.

Fig. 2 is the front view of the utility model chair back parts.

Fig. 3 is three surface construction figure of the utility model adjusting knob.

Fig. 4 is that the utility model uses the front perspective view at lock-out state.

Fig. 5 is that the utility model uses the front perspective view in mobile status.

1. head rests among the figure; 2. knob hole; 3. head rest slide rail; 4. adjusting knob; 5. knob is flat protruding; 6. slide rail groove; 7. locking slotted eye; 8. stopper slot; 9. the chair back; 10. head rest groove; 11. limited block.

The specific embodiment

In figure one, for convenient the description head rest 1 is resolved into front and back two parts, omitted the safe chair chair back other parts below 9 simultaneously; In the drawings; The chair back 9 upwards has the head rest of extending slide rail 3, and head rest 1 inside has head rest groove 10 downwards, and head rest groove 10 is slightly larger than head rest slide rail 3; Head rest slide rail 3 insert heads lean in the groove 10, and head rest 1 can move up and down along head rest slide rail 3; Head rest slide rail 3 central vertical directions have the slide rail groove 6 that runs through fore-and-aft direction; Be arranged with several locking slotted eyes 7 on the slide rail groove 6; Adjusting knob 4 centers have the flat protruding axle 5 of the knob of strip to pass the slide rail groove to be connected head rest inside; There is knob hole 2 at head rest 1 rear portion in the position of corresponding adjusting knob 4, and an end of adjusting knob 4 exposes herein; Respectively there is a stopper slot 8 slide rail groove 6 both sides, and head rest groove 10 inside of head rest 1 have two limited blocks 11 to run through stopper slot 8 and are fixed on the head rest inside grooves..

In Fig. 2; Several locking slotted eyes 7 are circular, and its diameter evenly distributes up and down along slide rail groove 6 central vertical lines greater than the width of slide rail groove 6; The integral body such as the cucurbit that combine are gone here and there; The size of locking slotted eye 7 and the width of slide rail groove 6 do not have fixedly requirement, and for obtaining the equilibrium of operability and fastness, the diameter of locking slotted eye 7 generally is set in the width 1.5-3 of slide rail groove 6.

In Fig. 3; Enumerate side view, front elevation and the stereogram of adjusting knob 4 successively; Adjusting knob 4 main bodys are cylindrical shape; The flat protruding axle 5 of knob of strip is extended in the place ahead, and the long edge lengths in the flat cross section of the flat protruding axle 5 of this knob is slightly less than the diameter of locking slotted eye 7 greater than the width of slide rail groove 6, and its minor face width is slightly less than the width of slide rail groove 6.

In Fig. 4; The flat protruding axle 5 of the knob of adjusting knob 4 is inserted in slide rail groove 6 one of them locking slotted eye 7, and the long limit of the flat protruding axle 5 of knob is a level, because of the width of the flat protruding 5 long edge lengths of knob greater than slide rail groove 6; Therefore; Adjusting knob is locked in the locking slotted eye 7 for 4 this moments, and under this state, head rest 1 is lock-out state with the chair back 9 integral body.

In Fig. 5, the long limit of the flat protruding axle 5 of knob is a plumbness, because of the width of the flat protruding 5 minor face width of knob less than slide rail groove 6; Therefore, adjusting knob can move up and down along slide rail groove 6 for 4 this moments, under this state; Head rest 1 is removable adjustment state; When the flat protruding axle 5 of knob moves to another locking slotted eye 7 centers, revolve adjusting knob 4 and turn 90 degrees, can lean on 1 like elongated insertion part under Fig. 4 state.

In the utility model; Only can change the locking between the head rest 1 and the safe chair chair back or move with adjusting knob 4; Contrast design in the past; A kind of simple in structure and firm new design is provided, has improved security of products and reduced product cost, can be applicable in the head rest adjusting of safety chair seats of car for children and other seats.

Claims (4)

1. a head rest adjusting device is made up of head rest slide rail, band groove head rest and the adjusting knob that extend chair back top, it is characterized in that:

In the groove that said head rest slide rail insert head leans on; The vertical orientation of head rest slide rail has strip slide rail groove; Be arranged with several circular locking slotted eyes on the slide rail groove, the adjusting knob center has the flat protruding axle of strip to pass the slide rail groove to be connected head rest inside.

2. according to the described head rest adjusting device of claim one, it is characterized in that:

The diameter of aforementioned locking slotted eye is greater than the width of slide rail groove; The flat protruding axle of the strip at aforementioned adjusting knob center; The long edge lengths in its flat cross section is slightly less than the diameter of locking slotted eye greater than the width of slide rail groove, its minor face width is slightly less than the width of slide rail groove; When adjusting knob was positioned at the long limit in locking slotted eye center and flat cross section and is in a horizontal position, the slide rail groove was pinned on long limit, and adjusting knob can not move together with band groove head rest and be lock-out state this moment; When the rotation adjusting knob made long limit, flat cross section become the upright position, adjusting knob can move up and down in the middle of strip slide rail groove, and be with the groove head rest this moment is adjustment state moving up and down.

3. according to the described head rest adjusting device of claim one, it is characterized in that:

There is the knob hole position of exposing at aforementioned band groove head rest rear, and is used for installing and regulating adjusting knob.

4. according to the described head rest adjusting device of claim one, it is characterized in that:

Can respectively there be a stopper slot slide rail groove left and right sides of aforementioned head rest slide rail, in stopper slot, can have limited block to run through stopper slot and is fixed on the head rest inside grooves, to its further reinforcement effect of overall structure.

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