CN101670845B - Orientation mechanism for stroller wheels - Google Patents

Abstract

The invention is a baby carriage wheel orientation mechanism, comprising: the positioning wheel seat is arranged at the lower end of the bracket and is provided with a first pivoting part and a first positioning part; a rotating wheel seat, the wheel is fixed on the rotating wheel seat, the rotating wheel seat includes: a second pivot part for pivoting to the first pivot part to allow the wheel to freely turn; a pull plate which can be combined to the rotating wheel seat in a vertically sliding way, and the upper end of the pull plate is provided with a second positioning part which is used for interfering with the first positioning part so as to orient the wheel; and the elastic component is arranged between the rotating wheel seat and the pulling plate.

Description

Orientation mechanism for stroller wheels

technical field

The invention relates to a stroller, in particular to an orientation mechanism for a wheel of the stroller.

Background technique

U.S. Patent No. 4,608,729 discloses a front wheel orientation mechanism of a stroller, as shown in Fig. 8 and Fig. 9, the mechanism is provided with a connecting sleeve 1 at the lower end of the front bracket 10, and a mandrel 2 is pierced on the sleeve 1 , while the lower end of the mandrel 2 is connected to the combined body 3 . Guide rails 13 and 5 are respectively provided on the connecting sleeve 1 and the combined body 3 , and sliding blocks 4 are provided on the guide rails 13 and 5 . The combination 3 is then attached to the front wheels (not shown). When wanting to make the front wheel of the baby carriage turn freely, the slide block 4 is fixed on the guide rail 13 of the sleeve 1, as shown in Figure 8; , you need to turn the front wheel first, so that the guide rail 5 of the combined body 3 corresponds to the guide rail 13 on the connecting sleeve 1, and slide the sliding block 4 downward so that it is simultaneously located on the guide rail 13 of the connecting sleeve 1 and the combined The guide rail 5 places of body 3, as shown in Figure 9, thereby front-wheel is fixed forward.

Yet this existing orientation mechanism must be fixed forward accurately front wheel earlier, so that the guide rail 13 of connecting sleeve 1 is corresponding with the guide rail 32 of combination body 3, just can slide block 4 smoothly Move down and finally complete the orientation of the front wheels. Such an operation method is not very convenient and needs to be further improved.

Contents of the invention

Therefore, the object of the present invention is to provide a baby carriage wheel alignment mechanism which is easy to use and operate.

An orientation mechanism for a stroller wheel of the present invention is arranged between a bracket and a wheel of the stroller, and is characterized in that the orientation mechanism includes:

A positioning wheel seat is located at the lower end of the bracket and has a first pivot joint and a first positioning portion;

A rotating wheel seat, the wheel is fixed on the rotating wheel seat, and the rotating wheel seat includes: a second pivot joint, used to pivotally connect to the first pivot joint, so that the wheel can turn freely; A sliding groove, the lower edge of the sliding groove defines a ratchet; a pull plate, which can be slidably combined to the sliding groove up and down, and the lower end of the pull plate is provided with a buckle corresponding to the ratchet, so that the pull plate is When pulling down, the fastening part is buckled on the pawl, and a second positioning part is provided on the upper end of the pulling plate for interfering with the first positioning part to orient the wheel; and an elastic component is provided between the rotating wheel base and the pull plate;

Wherein, when the second positioning portion does not interfere with the first positioning portion, the pulling plate compresses the elastic component and accumulates an elastic force, and the rotating wheel seat can rotate relative to the positioning wheel seat;

When the rotating wheel seat rotates to make the second positioning portion correspond to the first positioning portion, the elastic component provides elastic force to activate the pull plate, so that the second positioning portion interferes with the first positioning portion to position the Turn the wheel base.

Because the present invention comprises the locating wheel seat that is arranged at the lower end of the bracket, the rotating wheel seat that is combined with the locating wheel seat and is arranged on the wheel, and the drawing plate that is slidably installed on the fixed seat; the lower end of the locating wheel seat is provided with a first positioning portion. When the pull plate is not fixed to the first positioning part, the wheels can be turned in any direction, so that the baby carriage can move in all directions; and when the baby carriage is intended to face forward, the pull plate is inserted upward into the first positioning part , the stroller can only move in one direction and cannot move freely.

Description of drawings

FIG. 1 is a perspective view of the alignment mechanism of the present invention when the wheels are not fixed.

Fig. 2 is an exploded view of the orientation mechanism of the present invention.

Fig. 3 is a top view of the rotating wheel seat and the pull plate of the present invention.

Fig. 4 is a bottom view of the positioning wheel seat of the orientation mechanism of the present invention.

5 is a schematic cross-sectional view of the alignment mechanism of the present invention in an unfixed state of the wheel.

6 is a schematic cross-sectional view of the alignment mechanism of the present invention when the wheel is fixed.

7 is a cross-sectional view of the orientation mechanism of the present invention in another direction.

Fig. 8 is a schematic sectional view of the existing front wheel direction positioning mechanism when the front wheel is not fixed.

Fig. 9 is a schematic sectional view of the fixed state of the front wheel of the conventional front wheel direction positioning mechanism.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

FIG. 1 shows a perspective view of an orientation mechanism 100 and a wheel 20 according to the present invention. As shown in Figure 1, the orientation mechanism 100 of the stroller wheel of the present invention is arranged between the stroller support (not shown) and the wheel 20, and the orientation mechanism 100 includes a positioning wheel seat 30; The rotating wheel seat 50 of the seat 30 has a pull plate 90 that can slide up and down on the fixed seat 50 . The upper end of the pull plate 90 is provided with a tongue-shaped positioning column 92 for inserting into the positioning wheel seat 30 when the pull plate 90 is pulled upwards for fixing the wheel 20 .

As shown in FIG. 2 , an exploded view of the orientation mechanism 100 of the present invention, as mentioned above, includes a positioning wheel base 30 , a rotating wheel base 50 , and a pulling plate 90 . And positioning wheel base 30 then as shown in the bottom view of Fig. 4, is defined with downward annular groove 32 (indicating with dotted line range) and radial groove 36,38 that is arranged on the front and rear of annular groove 32 radially opposite respectively .

Referring back to FIG. 2 , the upper end of the rotating wheel base 50 is provided with a sleeve 52 adapted to be rotatably pivoted to the annular groove 32 (shown in FIGS. 4 , 5 and 6 ) for the wheels to turn freely. In addition, as shown in Figures 5 and 6, the pivotal connection between the positioning wheel base 30 and the rotating wheel base 50 is further defined by the central pivot 53 extending upwards from the fixed seat 50 and the positioning wheel base 30. The bearing 33 on the lower end edge is completed, or the end of the pivot 53 can be defined with a side hook 55, as shown in Figure 3 and Figure 7, used to buckle on the upper edge of the bearing 33 after passing through the bearing 33, so as to The positioning wheel seat 30 is pivotally fixed to the rotating wheel seat 50 . Preferably, the protruding directions of the hooks 55 on both sides are opposite. Certainly, the position between the bearing 33 and the pivot 53 can be exchanged, that is, the bearing is provided on the fixed seat 50 and the lower end of the positioning wheel seat 30 is provided with a downward pivot, which can also achieve the purpose of pivoting and fixing.

As shown in Figure 2, at the upper end of the pull plate 90 body, a positioning column 92 is integrally formed, which has a wider width than the pull plate 90 body, and near the middle of the body, two L-shaped finger portions 94 ( Only one is shown in the figure), and the ends of the two L-shaped fingers are respectively facing opposite directions, so as to be engaged in the slot 56 in FIG. 2 as described later. A convex rib 96 is defined at the lower end of the pull plate 90 for the user to pull the pull plate 90 , and an engaging portion 98 defining an engaging groove is provided on the opposite side of the convex rib 96 . A horizontal plate 95 (shown in FIGS. 5 and 6 ) is defined below the positioning column 92 , which is used as a stopper for the spring 60 when the return spring 60 is installed in the sliding groove 54 .

Also be provided with sliding groove 54 in the up and down vertical direction of rotating wheel base 50, its width is to match the width of this pull plate 90, so that pull plate 90 can slide up and down wherein, and as shown in Figure 2 and Figure 3, in A locking groove 56 is defined from the middle to the upper end of the sliding groove 54 for the positioning column 92 and the L-shaped finger 94 of the pull plate 90 to slide therein. The positioning column 92 and the L-shaped finger portion 94 are inserted into the slot 56 so that the pull plate 90 can not only slide up and down, but also ensure that the pull plate 90 will not get loose from the slide slot 54 . As shown in FIG. 2 , a return spring 60 is accommodated in the sliding groove 54 , and its lower end is fixed to the boss 57 at the lower edge of the sliding groove to provide an upward restoring force when the pull plate 90 is coupled to the rotating wheel seat 50 . And the lower edge of the sliding groove 54 of the rotating wheel base 50 defines a pawl 58 for when the pull plate 90 is pulled downwards, the buckling portion 98 at its lower end is hooked to the ratchet 58 on the lower edge of the sliding groove, and the pull plate 90 is pulled downward. The plate 90 is fixed in position.

As shown in FIG. 5 , a cross-sectional view of an orientation mechanism 100 according to the present invention is shown. Wherein it is shown that the pull plate rib 96 is pulled down to the location, so that the positioning column 92 at the upper end of the pull plate 90 is not inserted into the arc groove 36, so that the wheel (not shown) can be turned in any direction, and the pull plate 90 lower end The buckling portion 98 is hooked to the pawl 58 at the lower end of the rotating wheel base 50 . The return spring 60 in the sliding groove 54 is pressed down by the flat plate 95 below the positioning column 92, and is in a compressed state.

When the user lifts the rib 96 of the pull plate forward and upward, the engaging portion 98 of the pull plate 90 breaks away from the pawl 58 on the lower edge of the sliding groove 54 of the rotating wheel base 50, and under the action of the return spring 60, the pull plate 90 can automatically move upwards along the sliding groove 54, so that the positioning column 92 on the upper end of the pull plate 90 is inserted in the arc groove 36, as shown in Figure 6, so that the wheel can not turn freely and presents a fixed state. And when the user wants to make the wheel turn freely, the pull plate convex rib 96 is pressed down, so that the buckle portion 98 is buckled again and fixed on the pawl 58, so that the wheel can turn freely again. As shown in FIG. 6 , the lower edge of the engaging portion 98 and the upper edge of the ratchet 58 are respectively provided with matching slopes to facilitate the downward movement of the pull plate.

Although the positioning mechanism of the present invention illustrates the functions of each component with definite components and shapes, those familiar with the art can think of various possible changes and modifications after the disclosure of the invention of the application, for example, although The positioning post shown in the present invention is tongue-shaped and fits with two corresponding arc-shaped grooves. However, in fact, the cross-section of the positioning post and the matching groove can be rectangular or square. At the same time, the elastic component is illustrated by a spring. But it is also possible to replace it with other elastic bodies, such as rubber blocks and the like. In addition, although the invention uses another L-shaped finger to combine the pull plate into the sliding groove, it is obvious that the positioning tongue piece can also be directly extended integrally to connect to the L-shaped finger to provide a stronger combination.

Claims (16)

1. the attitude reference device of a stroller wheel is located between the support and a wheel of perambulator, it is characterized in that this attitude reference device comprises:

One location wheel seat is located at this support lower end and is had one first articulated section and one first location division;

One rotates wheel seat, and this wheel is fixed on this rotation wheel seat, and this rotation wheel seat comprises: one second articulated section in order to be pivoted to this first articulated section, freely turns to for this wheel; The sliding tray of one above-below direction, this sliding tray lower edge defines a ratchet; One arm-tie, can slide up and down to be bonded to this sliding tray, and this arm-tie lower end is provided with buckling parts that should ratchet, make when this arm-tie is pulled down, this buckling parts is buckled on this ratchet, and be provided with one second location division in this arm-tie upper end, in order to interfering, with this wheel orientation with this first location division; And an elastic parts, be located between this rotation wheel seat and this arm-tie;

Wherein, when did not interfere this second location division and this first location division, this arm-tie compressed this elastic parts and accumulates an elastic force, and this rotation wheel seat can be located wheel seat with respect to this and rotated;

When this rotation wheel seat turns to when making this second location division corresponding to this first location division, this elastic parts provides elastic force to activate this arm-tie, this second location division and this first location division is interfered, to locate this rotation wheel seat.

2. attitude reference device according to claim 1 is characterized in that: this first articulated section is a bearing, and this second articulated section is a pivot.

3. attitude reference device according to claim 1 is characterized in that: this first articulated section is a pivot, and this second articulated section is a bearing.

4. according to claim 2 or 3 described attitude reference devices, it is characterized in that: this pivot end defines the reciprocal side direction trip of a pair of protrusion direction, in order to engaging this bearing, should locate wheel seat and this rotation wheel seat combines.

5. attitude reference device according to claim 1 is characterized in that: this first location division is a groove.

6. attitude reference device according to claim 5 is characterized in that: this groove comprises one first groove and one second groove, lays respectively on the radially relative both sides of this location wheel seat.

7. attitude reference device according to claim 6 is characterized in that: the cross section of this groove is arc or rectangle.

8. attitude reference device according to claim 5 is characterized in that: this second location division is a registration mast

9. attitude reference device according to claim 1 is characterized in that: the upper limb of this ratchet is provided with the inclined-plane and the buckling parts lower edge is provided with inclined surface, in order to arm-tie to lower slider.

10. attitude reference device according to claim 1 is characterized in that: this arm-tie has a fin, is located at the direction opposite with this buckling parts, gets loose from this ratchet in order to this buckling parts.

11. attitude reference device according to claim 10 is characterized in that: this second location division and this fin are arranged at the opposite end up and down of this arm-tie respectively.

12. attitude reference device according to claim 1 is characterized in that: this rotation wheel seat also has a draw-in groove, and this draw-in groove is communicated with this sliding tray, and this second location division is mounted slidably in this draw-in groove.

13. attitude reference device according to claim 12 is characterized in that: this arm-tie comprises a body and a L type finger, and this L type finger is towards the direction extension of this this dignity dorsad;

Wherein, the end of this L type finger is positioned at this draw-in groove, moves in this sliding tray to limit this body.

14. attitude reference device according to claim 13 is characterized in that: this L type finger comprises one the one L type finger and one the 2nd L type finger, and the end of a L type finger and the 2nd L type finger protrudes respectively in the opposite direction.

15. attitude reference device according to claim 1 is characterized in that: this rotation wheel seat has a projection in an end of this sliding tray, and this elastic parts is sheathed on this projection.

16. attitude reference device according to claim 15 is characterized in that: this arm-tie laterally is protruding with a horizontal plate, and this elastic parts is arranged between this flat board and this projection.

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