CN206589733U - A kind of adjustable child safety seat of back height - Google Patents

Abstract

The utility model is related to a kind of adjustable child safety seat of back height, belongs to car occupant apparatus field.Wherein, child safety seat includes seat support, the chair back and chair back governor motion, chair back governor motion includes gear rack, gear shaft, boss, pull bar and return unit, pull bar, gear rack is vertically arranged and is fixedly connected with seat support, gear shaft is along the first lateral arrangement, the major axis of long axis hole on boss is along the second lateral arrangement, boss is fixedly connected with the chair back, inclined hole of the end of gear shaft through long axis hole and on pull bar bottom, pull pull bar and promote long axis direction of the gear shaft along long axis hole to move back and forth by inclined hole, so that teeth groove that is reciprocally embedded or exiting gear rack, relative position between the chair back and seat support on vertical can be adjusted.The utility model is easy to the regulation of child safety seat, can be widely used for using cooperatively with automobile.

Description

A kind of adjustable child safety seat of back height

Technical field

The utility model is related to Vehicular occupant equipment, specifically, is related to a kind of adjustable children's safety of back height Seat.

Background technology

Child safety seat is also referred to as child restrainnt system, be it is a kind of design and be installed in automobile exclusively for children be used for Improve children riding security seat, its generally by be fixedly connected by mounting base, for for children sit seat support and Constituted for the chair back that children lean on, it is designed not only needs to consider security with manufacture, also needs to consider comfortableness.

Notification number for CN203766558U patent document in disclose a kind of adjustable child safety seat of height of headrest, It includes seat support, the chair back, the headrest that can be slided along back height direction and adjusted for the height being fixed on headrest on the chair back Mechanism.It is provided with the children for different height and relaxed by adjusting the height of headrest so as to reach the height for improving whole backrest Suitable ride experience, but its using alignment pin with it is multiple be engaged along the positioning hole that short transverse is arranged by the way of realize headrest Height adjustable, causes the regulation of its height inconvenient.

The content of the invention

The purpose of this utility model is to provide a kind of adjustable child safety seat of back height.

To achieve these goals, the utility model provide the adjustable child safety seat of back height include seat support, The chair back and chair back governor motion, the chair back can be reciprocatingly fixedly connected with respect to seat support on vertical with seat support.The chair back adjusts machine Structure includes gear rack, gear shaft, boss, pull bar and return unit.Wherein, the length direction of gear rack is vertically arranged, The length direction of gear shaft is fixedly connected along the first lateral arrangement, gear rack with seat support, and boss is fixedly connected with the chair back；Axle Long axis hole is formed with the seat of hole, the major axis of the long axis hole is along the second lateral arrangement；The length direction of pull bar is vertically arranged, pull bar Lower end be provided with inclined hole；The direction of lower end is pointed to along the upper end of pull bar, in the teeth groove notch side of gear rack towards away from gear tooth The direction of bar, inclined hole is in tilted layout towards the direction away from upper end；Long axis hole and inclined hole are placed on outside gear shaft, and pull bar is with respect to gear Rack can be moved back and forth vertically, to drive gear shaft in the position of embedded teeth groove and to depart from past between the position of teeth groove along long axis hole It is multiple to slide；The reset force of return unit forces pull bar vertically to move to the position that gear shaft is embedded in teeth groove.

From above scheme, in the presence of return unit reset force, pull bar is set to be held in coupling position, i.e. gear shaft embedding In in a certain teeth groove, so that long axis hole is retained up fixed position relative with the teeth groove perpendicular, even if the chair back is with respect to seat support It is fixed at a certain position；When relative position when needing the two is adjusted, by applying pull bar by coupling position The pulling force in disengaging configuration direction is pointed to, it is moved to from coupling position at disengaging configuration, so that gear shaft takes off out of teeth groove Separate out, so that the relative position of long axis hole and the teeth groove on vertical is adjustable, so as to the relative position between the chair back and seat support Put and be adjusted, after having adjusted and discharge pull bar, in the presence of return unit reset force, pull bar is reset back coupling position, Gear shaft is embedded in another teeth groove again, realizes that the position after adjustment is kept.And be in course of adjustment, pull bar can be with the chair back one Movement is played, is easy to the adjustment of back height.

One specific scheme is the inner side that boss is fixed on chair back back wall, boss provided with it is vertically arranged and with drawing Long axis hole is equipped with the first chute that the bottom of bar is engaged, the first chute two side.It is easy to assemble and uses.

Another specific scheme is the inner side that boss is fixed on chair back back wall, and the upper end of pull bar is drawn for annular regulation Hand, back wall is formed with the through hole stretched into for human hand at annular regulation handle.It is easy to regulation.

Another more specifically scheme is that boss is fixed on the inner side of chair back back wall, and pull bar is provided with along its length Provided with the limited post being engaged with the second chute on the inside of second chute of arrangement, back wall.Favourable assembling.

One preferred scheme is that return unit is compression spring, and its one end is against pull bar, and the other end is against the chair back.It is easy to system Make and assemble.

Another preferred scheme is to be formed with to import and export face with the matching ends of gear shaft at teeth groove notch.

Another preferred scheme is that long axis hole and inclined hole are waist round hole.

Another preferred scheme is that the quantity of gear rack is two, and inclined hole is respectively positioned on two gear teeth with long axis hole Between bar.Be conducive to being uniformly distributed for stress of the whole seat during chair back height regulating, consequently facilitating back height Adjustment.

Preferred scheme is that seat support includes being formed with and drawing on an installing plate being fixedly connected with its mounting, the installing plate The vertical slot that bar is engaged and groove depth is vertically arranged, two gear racks are fixedly connected with the side wall of vertical slot respectively, gear Rack is made with installing plate in integrally formed mode.It is easy to the assembling of seat.

Brief description of the drawings

Fig. 1 is the stereogram of the utility model embodiment；

Fig. 2 is the structure decomposition figure of mounting, the chair back and chair back governor motion in the utility model embodiment；

Fig. 3 is the structure decomposition figure of installing plate, back wall and chair back governor motion in the utility model embodiment.

Embodiment

With reference to embodiments and its accompanying drawing the utility model is described in further detail.

Embodiment

Referring to Fig. 1 to Fig. 3, child safety seat have base 1, for children sit seat support 2, for children lean on the chair back 3, Chair back governor motion and the mounting 4 for being fixedly connected with foregoing four mechanisms.

Referring to Fig. 2 to Fig. 3, seat support 2 has the installing plate 21 being fixedly connected with mounting 4, and two are fixed with installing plate 21 Bar is vertically arranged and the gear rack 51 that is parallel to each other, and the teeth groove that multiple groove depths are arranged along the horizontal is disposed with gear rack 51 510, in the present embodiment, gear rack 51 is made with installing plate 21 in integrally formed mode.

The length direction of pull bar 52 in chair back governor motion is vertically arranged, and its upper end is ring-shaped handle 520, middle part The second chute 521 arranged along its length is formed with, bottom forms the inclined hole 522 being in tilted layout, in gear rack 51 Teeth groove 510 notch side along the direction away from gear rack 51, inclined hole 522 is downwardly inclined arrangement, in the present embodiment, inclined hole 522 be a waist round hole.

Be fixed with boss 55 in the medial surface of the back wall 31 of the chair back 2, be formed with boss 55 with pull bar 52 The chute 550 of matching ends, is respectively formed with long axis hole 551 on the two side of chute 550, and the major axis of long axis hole 551 is along Two lateral arrangements, in the present embodiment, long axis hole 551 are a waist round hole.

One length direction is sequentially passed through along the one end with the gear shaft 54 of second horizontal the first perpendicular lateral arrangement Long axis hole 551, inclined hole 522 and another long axis hole, and both ends are engaged with teeth groove 510.

The lower end of one spring 53 is against on the transverse wall located at pull bar 52, horizontal stroke of the other end against the inner side located at the chair back 31 To on wall, its elastic restoring force forces pull bar 52 to be moved down with respect to back wall 31.

The limited post 311 being engaged with the second chute 521 is convexed to form in the medial surface of back wall 31, when the second chute When 521 upper surface is against limited post 311, pull bar 52 is located at coupling position；When the lower surface of the second chute 521 is against limited post When 311, pull bar 52 is located at disengaging configuration.Back wall 31 is formed with ring-shaped handle 520 to be stretched into lift pull bar upwards for human hand 52 through hole 312.

Above-mentioned gear rack 51, pull bar 52, spring 53, gear shaft 54 and boss 55 with long axis hole 511 structure together The chair back governor motion of cost implementation.

After assembling is completed, pull bar 52 can be moved back and forth vertically with respect to the chair back 31 between disengaging configuration and coupling position.

When pull bar 52 is not acted on by the external force outside child safety seat, the elastic restoring force of spring 53 forces its downward Coupling position is moved to, and is maintained at by the collective effect with limited post 311 at this position, now, the edge of gear shaft 54 Inclined hole 522 slides and is moved to the upper end of inclined hole 522 so that gear shaft 54 in the second transverse direction along long axis hole 551 to by The direction movement of nearly back wall 31, so as in a certain teeth groove of embedded gear rack 51, constitute the chair back 3 and seat support 2 on vertical Relative position fixed mechanism.

When needing to adjust the height of the chair back 3, hand is stretched into after through hole 312 applies upward pulling force to pull bar 52, to overcome bullet The elastic restoring force of spring 53, so that inclined hole 522 is moved up, so as to promote gear shaft 54 to be moved towards the direction away from back wall 31 It is dynamic, and prior to or just when pull bar arrives at disengaging configuration, gear shaft 54 is removed from teeth groove 510 and outside teeth groove 510, so that The chair back 3 can up be carried into predetermined altitude with respect to seat support 2, reached after predetermined altitude, annular regulation handle 520 be decontroled, in spring In the presence of 53 elastic restoring forces, pull bar 52 is reset to coupling position by disengaging configuration, gear shaft 54 is embedded in teeth groove 510 again It is interior, the height after adjustment is fixed.

Spring 53 constitutes the return unit of the present embodiment, and it vertically forces the edge of pull bar 52 by the elastic restoring force that compression is produced Coupling position vertically is moved downward to from disengaging configuration, certainly, return unit is not limited to the compression spring in the present embodiment, also Can be extension spring, the first hook arm of extension spring is hung on pull bar 52, and the second upper arm is hung in back wall 31, and the first upper arm position Constituted in the top of the second upper arm, or by two homopolarity magnet pieces positioned opposite, a magnet piece is fixed on pull bar 52, Another magnet piece is fixed in back wall 31, and another magnet is located at higher position.

Claims (9)

1. a kind of adjustable child safety seat of back height, including seat support, the chair back and chair back governor motion, the chair back are relative The seat support can be reciprocatingly fixedly connected on vertical with the seat support；

It is characterized in that：

The chair back governor motion includes gear rack, gear shaft, boss, pull bar and return unit, the length of the gear rack Degree direction is vertically arranged, and the length direction of the gear shaft is along the first lateral arrangement, and the gear rack is consolidated with the seat support Fixed connection, the boss is fixedly connected with the chair back；

Long axis hole, the major axis edge of the long axis hole and described first horizontal the second perpendicular transverse direction are formed with the boss Arrangement；

The length direction of the pull bar is vertically arranged, and the lower end of the pull bar is provided with inclined hole；Pointed to along the upper end of the pull bar The direction of lower end, in the gear rack teeth groove notch side towards the direction away from the gear rack, the inclined hole is towards remote Direction from the upper end is in tilted layout；

The long axis hole and the inclined hole are placed on outside the gear shaft, and the relatively described gear rack of the pull bar can be vertically past It is multiple mobile, to drive the gear shaft along the long axis hole between the position of the embedded teeth groove and the position for departing from the teeth groove Reciprocatingly slide；

The reset force of the return unit forces the pull bar vertically to move to the position that the gear shaft is embedded in the teeth groove.

2. child safety seat according to claim 1, it is characterised in that：

The boss is fixed on the inner side of the back wall of the chair back, the boss provided with it is vertically arranged and with the pull bar The first chute for being engaged of bottom, be equipped with the long axis hole on the two side of first chute.

3. child safety seat according to claim 1, it is characterised in that：

The boss is fixed on the inner side of the back wall of the chair back, and the upper end of the pull bar is annular regulation handle, described Back wall is formed with the through hole stretched into for human hand at the annular regulation handle.

4. child safety seat according to claim 1, it is characterised in that:

The boss is fixed on the inner side of the back wall of the chair back, and the pull bar is provided with second arranged along its length Chute, the inner side of the back wall is provided with the limited post being engaged with second chute.

5. the child safety seat according to any one of Claims 1-4, it is characterised in that：

The return unit is compression spring, and one end of the compression spring is against the pull bar, and the other end is against the chair back.

6. the child safety seat according to any one of Claims 1-4, it is characterised in that：

It is formed with the notch of the teeth groove and imports and exports face with the matching ends of the gear shaft.

7. the child safety seat according to any one of Claims 1-4, it is characterised in that：

The long axis hole and the inclined hole are waist round hole.

8. the child safety seat according to any one of Claims 1-4, it is characterised in that：

The quantity of the gear rack is two, and the inclined hole and the long axis hole are respectively positioned between two gear racks.

9. child safety seat according to claim 8, it is characterised in that：

The seat support includes being formed with an installing plate being fixedly connected with its mounting, the installing plate to be engaged with the pull bar And the vertically arranged vertical slot of groove depth, two gear racks are fixedly connected with the side wall of the vertical slot respectively, described Gear rack is made with the installing plate in integrally formed mode.