JP5736060B2 - stroller - Google Patents

Description

  The present invention relates to a stroller.

  Generally, a stroller of the prior art includes a foldable frame, an elastic member, a seat mechanism disposed on the frame, a plurality of wheels disposed on a lower portion of the frame, and a brake mechanism attached to the plurality of wheels and the frame. Including. The frame usually includes a push rod, a holding push handle provided on the push rod, and generally an operating portion provided rotatably or slidable on the push rod or the push handle. The operation unit is connected to the brake mechanism via a tow rope, and the brake mechanism can switch between a braking state and a release state by controlling the operation unit.

  A technical problem to be solved by the present invention is to provide a stroller that can quickly brake by having a brake mechanism that can be easily operated.

  In order to overcome the above problems, the following technical method is used in the present invention.

Stroller
A foldable frame including a push rod and a push handle having a holding portion for holding at a rear portion;
A seat mechanism provided in the frame;
A plurality of wheels disposed at a lower portion of the frame;
A brake mechanism disposed between at least one of the plurality of wheels and the frame, and having a braking state and a releasing state;
A front end portion of the push handle is connected to a rear end portion of the push rod so as to be rotatable about an axis, a tow rope is connected between the push handle and the brake mechanism, and the push handle is , In the process of rotating with respect to the push rod, controlling the action of the brake mechanism via the tow rope, and when the brake mechanism is in the braking state, the push handle is in the first operating position, When the brake mechanism is in the released state, the push handle is in the second operating position, and the frame further includes an elastic member for facilitating the push handle to be in the first operating position. The highest point of the gripping part when the push handle is in the first operating position is that the push handle is in the second operating position. Higher than the highest point of the gripper when in.

Is symmetrical previous SL frame with respect to the center plane, projected figure of the rotation axis of the push handle to the push rod is straight line segments on the central plane.

  More preferably, the distance between the center point of the grip portion when the push handle is in the first operating position and the center plane is equal to the distance when the push handle is in the second operating position. It is larger than the distance between the center point of the grip portion and the center plane.

  In some embodiments, the push handle has a slot at a front end portion thereof, and an upper end portion of the push rod is rotatably inserted into the slot about itself as a rotation axis.

  In some other embodiments, a position limiting mechanism used to limit the rotation angle of the push handle is disposed between the push handle and the push rod.

  In some embodiments, the push handle is provided with an elongated groove, and the length direction of the elongated groove coincides with the direction of the rotation axis of the push handle with respect to the push rod. The handle has a spiral groove communicating with the slot, the length direction of the spiral groove extends in the vertical direction, a sliding body is connected to the upper end of the traction rope, and the sliding The moving body is inserted into the elongated groove and the spiral groove.

  Further, in some embodiments, the push rod includes an internal cavity that communicates with the elongated groove, and a portion of the sliding body and the tow rope are disposed within the internal cavity. .

  Further, in some embodiments, two brake mechanisms are provided, and the two brake mechanisms are respectively disposed between two of the wheels and the frame.

  Preferably, the frame includes two push rods and two push handles respectively disposed on the left side and the right side of the frame, and the grip portions of the two push handles are separated from each other when the brake mechanism is in a braking state. When the brake mechanisms are in the released state, they are close to each other.

  The scope of the present invention is not particularly limited to a technical system in which the above technical features are combined. Other technical schemes in which the technical features or equivalent features are arbitrarily combined, such as, but not limited to, the technical features having similar functions disclosed in the present invention are not limited thereto. The technical system formed by this should also be included in the present invention.

  By applying the above technical solution, the present invention has the following advantages over the prior art. Since the tow rope is connected between the push handle and the brake mechanism, when the push handle rotates with respect to the push rod by pushing down the push handle, the tow rope can release the brake mechanism and the stroller Can be moved. If the user keeps the push handle released, the push handle automatically returns to its original state, so that the brake mechanism enters the braking state and the stroller cannot move. Therefore, the stroller disclosed by the present invention can be used more safely.

FIG. 1 is a cross-sectional view showing a connecting portion between a push handle and a push rod. FIG. 2 is a cross-sectional view of the push handle. FIG. 3 is a schematic diagram showing the push handle in the first operating position when the brake mechanism is in a braking state. FIG. 4 is a schematic diagram showing the push handle in the second operating position when the brake mechanism is in the released state. FIG. 5 is a perspective view of a first embodiment according to the present invention. FIG. 6 is a side view of a second embodiment according to the present invention. FIG. 7 is a front view of the stroller in FIG. 6 when the brake mechanism is in a released state. FIG. 8 is a front view of the stroller in FIG. 6 when the brake mechanism is in a braking state. FIG. 9 is a cross-sectional view of the push handle of the stroller in FIG. FIG. 10 is a schematic diagram showing some components of the brake mechanism according to the present invention.

  Hereinafter, the present invention will be described with reference to the accompanying drawings. However, these drawings are for illustrative purposes only and should not be considered as limiting the scope of the present invention. This is because the present invention allows other equally effective embodiments.

First Embodiment As shown in FIG. 5, the main body of the stroller is disposed in a foldable frame 1, a seat mechanism (not shown by reference numerals) disposed in the frame 1, and a lower portion of the frame 1. Four wheels 2 and a brake mechanism attached between the wheels 2 and the frame 1. Further, the frame 1 includes at least one push rod 3 and at least one push handle 4, and a front end portion of the at least one push handle 4 is rotatably connected to a rear end portion of the at least one push rod 3. The at least one push handle 4 has a holding portion 11 for holding at the rear end thereof.

  The frame 1 also includes a plurality of wheel brackets (not shown with reference numerals), and each of the plurality of wheels is rotatably connected to a corresponding wheel bracket via a wheel shaft extending along the horizontal direction. Yes. The brake mechanism is usually disposed between the wheel 2 at the rear portion of the frame 1 and the corresponding wheel bracket, and is connected to the push handle 4 via the traction rope 7. In a preferred embodiment, it comprises two push handles 4 and two push rods 3 arranged on the left and right sides of the frame 1, respectively. With this configuration, since the user can push the stroller while holding the two gripping portions 11 of the two push handles 4 with both hands, a balanced operation can be realized conveniently.

  In the embodiment shown in FIG. 5, two brake mechanisms are provided, which are respectively arranged between the two wheels 2 and the frame 1, and are respectively connected to the push handle 4 via a traction rope 7. Connected. The state of the brake mechanism can be controlled by rotating the push handle 4 with respect to the push rod 3. 3 to 4 show a state change of the push handle 4 in the embodiment of FIG. The two push handles 4 are rotatably connected to the push rod 3, and the two brake mechanisms are respectively connected to the corresponding push handles 4 via the traction ropes 7. As shown in FIG. 4, the two push handles 4 of the stroller both rotate with respect to the push rod 3 in the process of operating the brake mechanism to the release state by the push handle 4.

  The overall configuration of each brake mechanism is not shown. This is because the brake mechanism is not a significant technical feature to be protected in the present invention, but can be realized in various ways.

  FIG. 10 shows a brake block 13 for braking. A plurality of brake holes may be formed in the wheel 2 of the vehicle body so as to coincide with the brake block 13, and preferably the plurality of brake holes are formed on the wheel 2 of the vehicle body. Are evenly distributed on the circumference around the center of rotation. A brake pin 131 is provided in the brake block 13 of FIG. The brake block 13 is connected to the lower end portion of the traction rope 7, and the pressure spring 14 is disposed between the brake block 13 and the wheel bracket. When the brake mechanism is in a braking state, the brake pin 131 is inserted into one brake hole. When the brake mechanism is in the released state, the brake pin 131 is removed from the brake hole.

  As the brake mechanism of the present invention, for example, a gripping brake device including a fixed wheel shaft and a wheel boss on a wheel of a vehicle body can be used. The brake mechanism includes a brake bar, one end of the brake bar is fixed to the wheel bracket, and the other end of the brake bar is connected to the lower end of the traction rope. In the braking state, the brake bar grips the corresponding wheel boss, and in the released state, the brake bar disengages from the corresponding wheel boss. The gripping brake device described in the present specification is a brake device generally used in the art, and therefore is not described in more detail in the drawings of the present invention.

  The frame 1 has a symmetrical configuration with respect to the center plane, and the projection figure of the rotation axis of the push handle 4 with respect to the push rod 3 is a straight line segment on the center plane. That is, the rotation axis is preferably not perpendicular to the center plane. In general, the push rod 3 is made of a pipe, and preferably the direction of the rotation axis coincides with the length direction of the push rod 3.

  When the brake mechanism is in a braking state, the push handle 4 is in the first operating position as shown in FIG. When the brake mechanism is in the released state, the push handle 4 is in the second operating position, as shown in FIG. In the push handle 4, the highest point of the grip 11 when the push handle 4 is in the first operating position is higher than the highest point of the grip 11 when the push handle 4 is in the second operating position. It is preferable to be mounted as such.

  Further, when the brake mechanism is in a braking state, as shown in FIG. 3, the grip portions 11 of the two push handles 4 are far away from each other. When the brake mechanism is in the released state, as shown in FIG. 4, the gripping portions 11 of the two push handles 4 are approaching each other.

  In order to facilitate the push handle 4 to be in the first operating position, an elastic member may be disposed on the frame 1. As will be described later in the second embodiment, the elastic member may be disposed between the push handle 4 and the push rod 3, or may be disposed between the brake block 13 and the wheel bracket. That is, since the return force can be easily obtained by the pressure spring 14, the brake mechanism returns to the original state without using an external force and enters a braking state. At the same time, the pressure spring 14 transmits the return force to the push handle 4 via the brake block 13 and the traction rope 7, so that the push handle 4 remains in the first operating position.

  If the user wants to push the stroller, it is necessary to push down both of the grips 11 of the two push handles 4 simultaneously. As a result, the two brake mechanisms are released and the stroller can be pushed. Furthermore, since both of the gripping portions 11 of the two push handles 4 move to the inside of the frame 1 in the process of pushing down the gripping portion 11 of the push handle 4, the comfort of the pushing operation is further improved.

  The connection between the push handle 4 and the push rod 3 can be changed in order to make the baby stroller more compact, rationalized and simplified. As shown in FIGS. 1 to 2, the push handle 4 has a slot 5 at the front end thereof, and the upper end of the push rod 3 is rotatably inserted into the slot 5 with itself as a rotation axis. . Or a push rod has the slot 5 in the front-end part, and the lower end part of the push handle 4 is rotatably inserted in the said slot 5 by making itself into a rotating shaft. Such a configuration is not shown, but can be realized by changing the configuration of FIGS.

  A position limiting mechanism used to limit the rotation angle of the push handle 4 is disposed between the push handle 4 and the push rod 3 (not shown). Since the position limiting mechanism is not a significant technical feature to be protected in the present invention, it is not described in more detail in the drawings. Further, the position limiting mechanism can be realized by a simple method. For example, the push handle 4 is provided with a first position restriction portion, and the push rod 3 is provided with two second position restriction portions. The two second position restriction portions make the first position restriction portion constant. It is limited to rotate only within the angular range. When the first position restricting portion and the two second position restricting portions come into contact with each other, the push handle cannot continue to rotate around the push rod 3.

  As shown in FIGS. 1 to 2, the push handle 4 has an elongated groove 8, and the direction of the rotation axis of the push handle 4 relative to the push rod 3 coincides with the length direction of the elongated groove 8. Yes. The push handle 4 has a spiral groove 9 communicating with the slot 5, and the length direction of the spiral groove 9 extends along the vertical direction. A sliding body 6 is connected to the upper end of the traction rope 7, and the sliding body 6 is inserted into the elongated groove 8 and the spiral groove 9. During the rotation of the push handle 4, the sliding body 6 slides inside the spiral groove 9 and the elongated groove 8, and the position of the sliding body 6 in the elongated groove 8 is controlled by the spiral groove 9. When the traction rope 7 is pulled during sliding, the brake mechanism can switch between a braking state and a released state.

  As shown in FIG. 1, the push rod 3 is provided with an internal cavity 10 that communicates with the elongated groove 8, and a part of the sliding body 6 and the traction rope 7 are disposed in the internal cavity 10. .

Second Embodiment FIGS. 6 to 9 show a second embodiment of the present invention. The second embodiment differs from the first embodiment in the number of brake mechanisms. As shown in FIGS. 6 to 8, one brake mechanism is disposed between one of the plurality of wheels 2 and the frame 1. Similarly, this brake mechanism is connected to the push handle 4 by the traction rope 7, and the change in the state of the brake mechanism can be controlled by rotating the push handle 4. Accordingly, in the present embodiment, only one push handle is configured to be rotatably connected to the corresponding push rod 3. That is, the push handle 4 connected to the brake mechanism via such a traction rope can rotate with respect to the push rod 3, and the brake mechanism is released from the braking state and released as shown in FIGS. In the process of switching between the states, only one push handle 4 switches between the first operation position and the second operation position, and the other push handle 4 remains in the initial state. If the user wants to push the stroller, he / she releases the brake mechanism by pushing one push handle 4 down and inside the frame 1. At the same time, the gripping portions 11 of the two push handles 4 approach each other and reach a convenient position for holding. On the other hand, as shown in FIGS. 7 to 8, it is preferable that the grip portion of one push handle 4 is designed to have a configuration and an attachment angle adapted to pushing. As a result, the user can habitually depress the grip portion of the other push handle 4 before pushing the stroller. That is, one push handle 4 substantially matches the state of the other push handle 4 in the second operating position.

  FIG. 9 shows a torsion spring 12 disposed between the push handle 4 and the push rod 3. Since the push handle 4 exerts a return force via the torsion spring 12, the push handle 4 can return to the original operating position without using an external force and can remain in the first operating position. This method is also applicable to the first embodiment. That is, the pressure spring 14 described in the first embodiment is removed, and the push handle 4 is restored using only the torsion spring 12, and the brake mechanism is also restored to the braking state. Alternatively, both the pressure spring 14 and the torsion spring 12 can be provided so that not only the push handle 4 returns more steadily but also the brake mechanism returns more steadily to the braking state.

  As described above, the detailed description is described according to the spirit of the present invention, but the present invention is not limited to the above-described embodiments and implementation methods.

  Those skilled in the relevant art can make many modifications and methods within the scope of the present invention.

Claims (8)

A foldable frame (1) including a push rod (3) and a push handle (4), the push handle (4) having a holding part (11) for holding at a rear part thereof and the push handle ( 4) is rotatable at the rear end of the push rod (3) so that it can rotate about the axis relative to the push rod (3) between a first operating position and a second operating position. And the highest point of the grip portion (11) in the first operating position of the push handle (4) is in the second operating position of the push handle (4). A foldable frame (1) higher than the highest point of the gripping part (11);
A seat mechanism provided in the frame (1);
A plurality of wheels (2) arranged at the bottom of the frame (1);
A brake mechanism disposed between at least one of the plurality of wheels (2) and the frame (1);
A tow rope (7), wherein the push handle (4) controls the operation of the brake mechanism via the tow rope by rotating with respect to the push rod (3), and the push handle ( 4) to change the brake mechanism to the released state when the second operating position, and to change the brake mechanism to the braking state when the push handle (4) is the first operating position; A stroller including a tow rope (7) connected between the push handle (4) and the brake mechanism,
Said frame (1) further seen including an elastic member for the push handle (4) is likely to be the first operating position,
The frame (1) is symmetrical with respect to the center plane, and when the rotation axis of the push handle (4) with respect to the push rod (3) is projected onto the center plane, a straight line segment is formed on the center plane. A stroller characterized by that. The distance between the center point of the grip part (11) in the first operating position of the push handle (4) and the center plane is the grip in the second operating position of the push handle (4). The stroller according to claim 1 , wherein the stroller is larger than a distance between a center point of the portion (11) and the center plane.   The push handle (4) has a front portion in which a slot (5) is opened, and an upper end portion of the push rod (3) is rotatably inserted into the slot (5) about itself as a rotation axis. The stroller as claimed in claim 1.   The stroller according to claim 1, wherein a position limiting mechanism used to limit a rotation angle of the push handle (4) is disposed between the push handle (4) and the push rod (3). A sliding body (6) connected to the upper end of the tow rope (7);
The sliding body (6) is inserted into the elongated groove (8) and the spiral groove (9), and the length direction of the elongated groove (8) is that of the push handle (4) with respect to the push rod (3). The elongate groove (8) is opened in the push handle (4) so as to be parallel to the rotation axis, and the push groove (9) extends in the vertical direction. The spiral groove (9) is opened in the handle (4),
The stroller according to claim 3 , wherein the spiral groove communicates with the slot (5). The push rod (3) is provided with an internal cavity (10) communicating with the elongated groove (8), and a part of the sliding body (6) and the traction rope (7) are connected to the internal cavity. The stroller according to claim 5 , which is arranged in (10). The stroller according to any one of claims 1 to 6 , further comprising two brake mechanisms, wherein the two brake mechanisms are respectively disposed between two of the plurality of wheels and the frame. Two push rods (3) and two push handles (4) disposed on the left and right sides of the frame (1), respectively, the grip portion (11) of the two push handles (4) The stroller according to any one of claims 1 to 6 , wherein when the brake mechanism is in a braking state, they are separated from each other, and when the brake mechanism is in a released state, they are close to each other.

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