CN101837800B - Manual lever of stroller - Google Patents

Abstract

A manual lever (15) of stroller according to the invention comprises the following components: a pair of side pipes (67), a U-shaped pipe (68), a remote operation device (37) which is provided on the U-shaped pipe, and a metal wire (69) which is provided on the remote operation device (37) and is connected with the fixing releasing components (38) provided on each side pipe. Each side pipe is provided with a square joint (61) with a square outer gear (71). The U-shaped pipe is provided with the other square joint (65) which is provided with the other square outer gear (83) and is rotatable relatively to the square joint. Between the square joint (61) and the other square joint (65), the following components are provided: an inner gear (63) which is detachably connected with the outer gear of the square joint (61) and the outer gear of the other joint (65); and a metal wire guiding shaft (74) which is provided adjacently with the inner gear (63) and guides the metal wire (69) to the periphery of a rotation center of the other square joint (65).

Description

stroller push rod

This application is a divisional application of an invention patent application with the title of "Pusher for Baby Carriage", the filing date being September 30, 2006 and the application number being 200610141573.1.

technical field

The present invention relates to a push rod of a baby carriage, and more particularly to a push rod of a baby carriage capable of improving the operability of a remote control device and capable of reducing the weight.

Background technique

In general, among baby carriages used when taking infants outdoors for walking or shopping, those that can be folded as needed, stored and carried easily have been developed.

Fig. 23 is a partially cutaway perspective view showing a schematic structure of the stroller. As shown in FIG. 23 , the stroller body includes a pair of left and right front legs 12 with front wheels 11, a pair of left and right rear legs 14 with rear wheels 13, a push rod 15 bent in a substantially U-shape, and a pair of left and right armrests. 16, and two left and right side vertical pipes 17 that are pivotally mounted to one end of the armrest 16 and extend parallel to each other.

The front ends of the front legs 12 are pivotally attached to the front portions of the armrests 16, and between the front ends of the armrests 16, arc-shaped bendable protective arms 18 are detachably mounted. In addition, the front ends of the left and right rear legs 14 are also pivotally attached to the middle portion of the armrest 16, and one end of a bracket 19 bent in a ㄑ shape is pivotally attached to the middle portion of the rear legs 14. In addition, intermediate positions of the brackets 19 are pivotally mounted on the lower ends of the side longitudinal tubes 17, respectively. And, in the unfolded state of the stroller, the locking member 20 slidably attached to the side vertical pipe 17 is engaged with an engaging portion formed on the other end of the bracket 19 to maintain the unfolded state.

On the other hand, the left and right front legs 12 are connected by a front leg connection stay 22 having a footrest 21 , and the left and right rear legs 14 are connected by a rear leg connection stay 23 . Furthermore, on the middle portion of each front leg 12, the front end of the side frame 24 is pivotally mounted, and the rear end of the side frame 24 is pivotally mounted on the side together with the lower end portion of the bracket 19 and the push rod 15. on the front end of the longitudinal pipe 17. Moreover, the middle part of the side frame 24 on either side is connected by the upper part connection stay 25 extended in the left-right direction.

Then, by engaging the locking member 20 provided on the lower end of the side vertical pipe 17 with the locking part provided on the upper end of the bracket 19, the stroller is held in a usable unfolded state. On the other hand, if the engagement of the locking member 20 and the bracket 19 is disengaged by operating the operating device 26 provided on the hand push rod 15, the armrest 16 and the side frame 24 can pivot with respect to the side vertical pipe 17. The shaft installation point is the center and swings upwards. As a result, the front leg 12 and the rear leg 14 can be swung to a substantially parallel state, and can be folded in two for easy portability.

A bottom seat 27 having a seat plate portion and a backrest portion is attached to the baby carriage body formed as described above. That is, the bottom seat 27 has its seat plate portion 27a installed on the upper connecting stay 25, and the left and right side edges of the backrest portion 27b are installed on the left and right side vertical pipes 17 at the pivotal installation points of the armrests 16. on the upper part. In addition, a baby seat (not shown) made of a sewn product is placed on the bottom seat 27 as necessary, and the baby carriage is moved by sitting or lying on the baby seat.

In the baby stroller as described above, since it may be transported in a folded state or carried while holding the baby stroller on a step or the like, weight reduction is one of the problems.

Conventionally, as shown in FIGS. 24( a ) and 24 ( b ), the push bar 15 of the stroller includes a pair of side pipes 67 and a U-shaped pipe 68 arranged between the pair of side pipes 67 . A remote operation device is provided on the U-shaped pipe 68, and a wire 69 connected to a lock release member provided on each side pipe is connected to the remote operation device. Each side pipe 67 is provided with one joint 61 having one external gear 71 and a wire guide path 90, and the U-shaped pipe 68 is provided with the other side external gear 83 and a wire guide path 90 opposite to the corresponding joint. One joint 61 is rotatable and the other joint 65 is rotatable. Furthermore, between the one joint 61 and the other joint 65 , there is provided an internal gear 63 which detachably engages the one external gear 71 of the one joint 61 and the other external gear 83 of the other joint 65 .

Here, the wire 69 is arranged in the wire guide path 60 provided outside the internal gear 63 so that it does not get entangled on the internal gear 63 when the U-shaped tube 68 is bent relative to the side tubes 67 . Therefore, when the U-shaped tube 68 is arranged linearly with respect to the side tube 67 (refer to FIG. 24(b)), it is necessary to change the length of the wire 69 arranged in the wire guide path 60 . Therefore, the loop 59 is formed by rotating the wire 69 in advance to form an idle amount.

However, if such a ring 59 is formed in advance, there will be useless resistance when operated by the remote operation device, which will cause deterioration of operability. In addition, since the wire 69 is heavy, if the wire 69 is rotated to form the loop 59, the stroller will become heavier by that amount.

In addition, the components that operate the lock member 20 etc. through the remote device at hand are often composed of an inner sliding member that is located inside a tube such as a push rod and that is linked to the remote device at hand, and an outer sliding member that follows it in conjunction with it. . In addition, the outer sliding member is usually formed in a cylindrical shape in many cases, and the stroller becomes heavier by this amount. That is, although the outer sliding member only needs to follow the inner sliding member, it does not necessarily need to be cylindrical, but most outer sliding members are usually formed in a cylindrical shape, and there is room for improvement in consideration of weight reduction.

Contents of the invention

The present invention has been made in consideration of such a problem, and an object of the present invention is to provide a lightweight stroller push bar.

The present invention is a hand push rod for a stroller, which is characterized in that it comprises: a pair of side pipes; a U-shaped pipe arranged between the pair of side pipes; a remote operation device arranged on the U-shaped pipe; The wire is provided on the remote operation device and connected to the lock release part provided on each side pipe; one side joint is provided on each side pipe and has an external gear and a wire guide path; the other The joint is set on the U-shaped tube, and has the other external gear and the wire guide path, which can rotate freely relative to the corresponding one joint; the internal gear is set between one joint and the other joint, and can be disassembled freely. Snapped on one external gear of one joint and the other external gear of the other joint; the guide part is arranged between one joint and the other joint, adjacent to the internal gear, and has the function of guiding the wire to the other joint The wire guides the shaft near the center of rotation.

The present invention is a hand pusher for a stroller, wherein the guide member has a holding plate for holding a wire guide shaft, and a guide protrusion provided on the holding plate for guiding the wire.

The present invention is a hand pusher for a stroller, wherein the guide protrusion of the guide member forms a space on the side of the U-shaped tube, and a notch for holding the wire is formed on the side of the side tube.

The present invention is a hand push rod for a stroller, characterized in that the other joint is provided with a button for releasing the engagement between the other external gear and the internal gear of the other joint.

The present invention is a hand push rod for a stroller, which is characterized in that the retaining plate of the guide part is provided with a retreat groove for retracting the metal wire.

The present invention is a hand push rod for a stroller, which is characterized in that a spring is provided between the internal gear and one joint, and a spring fixing shaft that supports and fixes the spring from the inside is provided on one joint.

The present invention is a hand push rod for a stroller, which is characterized in that it comprises: a pair of side pipes; a U-shaped pipe arranged between the pair of side pipes; a remote operation device arranged on the U-shaped pipe; The wire is provided on the remote operation device and connected to the lock release part provided on each side pipe; one side joint is provided on each side pipe and has an external gear and a wire guide path; the other The joint is set on the U-shaped tube, and has the other external gear and the wire guide path, which can rotate freely relative to the corresponding one joint; the internal gear is set between one joint and the other joint, and can be disassembled freely. Engaged with one external gear of one joint and the other external gear of the other joint; either one of the one joint and the other joint has a wire guide shaft that guides the wire to the vicinity of the rotation center of the other joint.

The present invention is a hand push rod for a stroller, which is characterized in that one of the one joint and the other joint has a joint main body equipped with a wire guide shaft; the joint main body has a joint extending along the rotation direction of the other joint. incision.

The present invention is a hand push rod for a stroller, characterized in that a joint cover is provided on the joint main body to cover a cutout extending along the rotation direction of the other joint and to be rotatable in the rotation direction of the other joint. ; The connector cover has a wire guide hole for the wire to pass through.

The present invention is a hand push rod for a stroller, characterized in that the other joint is provided with a button for releasing the engagement between the other external gear and the internal gear of the other joint.

The present invention is a hand push rod for baby carriage, which is characterized in that a spring is provided between the internal gear and the wire guide shaft; and a convex part for supporting the spring is provided on the side of the wire guide shaft.

The present invention is a hand push rod for a stroller, characterized in that the button has a protrusion that abuts against the internal gear, and a protruding rod that is provided on the protrusion and penetrates through the internal gear.

The present invention is a hand push rod for a stroller, which is characterized in that it comprises: a pair of side pipes with long holes extending along the axial direction on the sides; a U-shaped pipe arranged between the pair of side pipes; The guide part, at least in one side tube, extends along the axial direction of the side tube and is plugged and fixed; the inner sliding part, inside the side tube, is slidably installed along the guide part in the axial direction; the spring, tensioned Provided between the guide part and the inner slide part, applying force so that the inner slide part is in the initial position relative to the guide part; the plate-shaped outer slide part, provided on the outer surface of the side tube, through the long hole of the side tube It is connected to the inner sliding member, and is slidably attached to the outer surface of the side pipe along the length direction of the long hole of the side pipe.

The present invention is a hand push rod for a stroller, which is characterized in that it further comprises: a remote operation device disposed on the U-shaped tube; a metal wire disposed on the remote operation device and connected to the inner sliding part; By operating the wire with the remote operation device, the outer sliding member slides relative to the outer surface of the side pipe along the length direction of the elongated hole of the side pipe via the inner sliding member.

The present invention is a hand push bar for a stroller, characterized in that the outer sliding member is manually slidably mounted relative to the outer surface of the side pipe.

The present invention is a push rod for a stroller, wherein the outer sliding member is connected by a connecting member.

The present invention is a push rod for a stroller, wherein the outer sliding member is a lock release member that releases the lock when the stroller is folded in half.

The present invention is a hand push rod for a stroller, characterized in that the outer sliding member is a locking member that keeps the push rod in a face-to-face push state or a back push state.

The present invention is a hand pusher for a stroller, characterized in that a protruding portion protruding in a horizontal direction is provided on an inner outer surface of an outer sliding member.

The present invention is a hand push rod for a stroller, which is characterized in that a base portion slidably engaged in a long hole of a side pipe is provided on the outer surface of the outer sliding member.

According to the present invention, a light-weight stroller can be provided by shortening the length of the wire provided between the remote control unit and the unlocking member, or by making the outer sliding member that follows the inner sliding member into a plate shape. hand putter.

Description of drawings

Fig. 1 is a perspective view showing a schematic structure of a push rod incorporating the present invention.

Fig. 2 is a longitudinal sectional side view of the stroller.

Fig. 3 is an enlarged side view of a support frame and a side plate portion of a backrest portion.

Fig. 4 is a plan view of a back support frame and a headrest.

Fig. 5 is an explanatory diagram of the operation of the back support frame and the headrest.

Fig. 6 is an explanatory view showing the operation of the back rest support frame and the headrest during folding.

7 is a plan view of one joint, a spring, an internal gear, a guide member, the other joint, and a button of the first embodiment before assembly, viewed from the direction A of FIG. 1 .

8 is a plan view of one joint, a spring, an internal gear, a guide member, the other joint, and a button of the first embodiment before assembly, viewed from the direction B in FIG. 1 .

9 is a side cross-sectional view of one joint, spring, internal gear, guide member, other joint, and button before assembly in the first embodiment.

Fig. 10 is a configuration diagram of one joint according to the first embodiment.

Fig. 11 is a configuration diagram of an internal gear according to the first embodiment.

Fig. 12 is a block diagram of a guide member according to the first embodiment.

Fig. 13 is a configuration diagram of the other joint according to the first embodiment.

14 is a side cross-sectional view of one joint, spring, internal gear, guide member, other joint, and button assembled in the first embodiment.

Fig. 15 is a configuration diagram showing the relationship between the guide member and the wire according to the first embodiment.

16 is a schematic plan view of one joint, a spring, an internal gear, a guide member, the other joint, and a button before assembly in the second embodiment.

17 is a side cross-sectional view of one joint, spring, internal gear, guide member, other joint, and button before assembly in the second embodiment.

Fig. 18 is a schematic plan view showing the relationship between the joint main body, the joint cover and the wire in the second embodiment.

19 is a side cross-sectional view of one joint, spring, internal gear, guide member, other joint, and button assembled in the second embodiment.

Fig. 20 is a schematic plan view showing the relationship between the joint main body, the joint cover and the wire in the second embodiment.

Fig. 21 is a perspective view of a lock release member slidably provided on the hand push lever according to the third embodiment.

Fig. 22 is a longitudinal sectional view of a lock releasing member portion according to a third embodiment.

Fig. 23 is a partially cutaway perspective view of a conventional stroller.

Fig. 24 is a schematic plan view showing a conventional push rod.

Detailed ways

first embodiment

Next, a first embodiment of the present invention will be described with reference to the drawings.

First, a stroller incorporating the push bar 15 of the stroller of the present invention will be described with reference to FIGS. 1 to 6 .

Fig. 1 is a perspective view showing a general structure of a stroller, and Fig. 2 is a longitudinal sectional side view thereof. A push rod 15 bent in a U-shape, a pair of left and right armrests 16, and two left and right side vertical pipes 17 are pivotally attached to the rear ends of the armrests 16 and extend parallel to each other.

Top ends of the front leg 12 and the rear leg 14 are pivotally attached to the front end of the armrest 16 . On the rear end portion of the armrest 16, the apex portion of the side vertical pipe 17 is pivotally mounted. The left and right front legs 12 are connected by a front leg connecting stay 22 also serving as a footrest. The left and right rear legs 14 are connected by a rear leg connection stay 23 . The lower end of an L-shaped bracket 19 is pivotally attached to the rear leg 14 via a shaft 19 a , and the middle portion thereof is pivotally attached to the lower end of the side vertical pipe 17 via a shaft 30 . In addition, frame mounting parts 31 are pivotally attached to the lower end parts of the left and right side vertical pipes 17 via shafts 30 on the inner surfaces facing each other (see FIG. 3 ). Furthermore, the lower end portion of the U-shaped hand push rod 15 is pivotally attached to the shaft 30 together with the bracket 19 disposed outside the side vertical pipe 17 .

Front ends of side frames 24 are pivotally attached to intermediate positions of the left and right front legs 12 . Front ends of the left and right side frames 24 are connected by a front upper connecting stay 32 . In addition, the rear end portion of the side frame 24 is fixedly connected to the middle position of the frame mounting member 31 . On the frame attachment member 31 , a stay attachment portion 31 a is protrudingly provided at a lower position on the side opposite to the shaft 30 at the fixed connection position with respect to the side frame 24 . A rear upper connection stay 33 is fixedly connected to the stay attachment portion 31 a, and the left and right frame attachment members 31 are connected to each other by the rear upper connection stay 33 . In addition, on the left and right frame mounting members 31, between the shaft 30 and the rear upper connection stay 33, the left and right front ends of the back support frame 34 formed in an inverted U-shape are pivotally mounted through the shaft 35, The inverted U-shaped back support frame 34 is swingably attached to the frame attachment member 31 (see FIG. 3 ).

A lock member 20 that engages with a free end portion of the bracket 19 in the unfolded state of the stroller to maintain the unfolded state is slidably attached to the lower end of the side vertical pipe 17 . On the other hand, a lock release member 38 operated by a remote operation device 37 provided on the push rod 15 is slidably attached to the push rod 15 along the push rod 15 . Then, when the lock release member 38 is pulled up by the remote operation device 37, the lock release member 38 is pulled up. Then, when the unlocking member 38 is pulled upward, the unlocking lever 39 provided on the unlocking member 38 comes into contact with the operating plate 40 provided on the locking member 20, and the locking member 20 is pulled upward. Therefore, the lock of the bracket 19 is released, and the stroller main body can be folded in half so that the front legs 12 and the rear legs 14 are substantially parallel.

In addition, locking protrusions 41 (only one of which is shown (see FIG. 1 )) protruding laterally are fixed to the outer surfaces of the armrest 16 and the side vertical pipes 17 . In addition, on the push rod 15 , a locking member 42 having a concave portion engaged with the locking protrusion 41 is slidably attached along the push rod 15 . Therefore, by pulling the locking member 42 upwards, the locking member 42 is released from the locking protrusion 41, and the hand push lever 15 is swung backward or forward, so that the hand push lever 15 can be brought into a face-to-face pressing state or a back pushing state. pressure state.

A U-shaped seat support frame is formed by the left and right side frames 24 and 24 and the front upper connecting stay 32 connecting their front ends. In addition, a base material 46 for a bottom seat is stretched over a portion surrounded by the seat support frame and the backrest support frame 34 connected to the seat support frame. That is, both side edges of the seat portion 46 a of the bottom seat base material 46 are attached to the left and right side frames 24 , and front end edges of the seat portion 46 a are attached to the front upper connecting stay 32 . In addition, the side edges of the backrest 46b connected to the seat part 46a are mounted on the left and right side frame parts 34a of the backrest support frame 34, and the rear end edges of the backrest 46b are attached to the backrest support frame 34a. The left and right side frame parts 34a of the frame 34 are connected to the horizontal bar part 34b. In addition, the base material 46 for a bottom seat is stretched in a tensioned state in the front-rear direction and the left-right direction. And the bottom seat tensioning member 47 (refer FIG. 2) is bonded to the back side of the seat part 46a of the base material 46 for bottom seats stretched on the seat part support frame. In addition, the front end portion of the bottom seat tension member 47 is attached to the rear upper connecting stay 33 provided below the pivot mounting shaft 35 of the back support frame 34 in the expanded state of the stroller (see FIG. 2 ). ). Then, the seat part 46a of the bottom seat is also stretched to the rear side by the action of the bottom seat tension member 47, so it becomes a state of being stretched from all directions, and the base material 46 for the bottom seat is more reliably brought into a tensioned state. .

Further, on the back side of the back support frame 34 on which the bottom seat 46 is stretched, a gradient stretching belt 48 fixedly connected to the left and right side vertical pipes 17 is arranged. Therefore, the inclination angle of the back contact part 46a can be adjusted by adjusting the length of this inclination stretching belt 48. As shown in FIG.

In this way, the rigidity of the bottom seat can be maintained by stretching the base material 46 for the bottom seat in a tensioned state in the front-rear direction and the left-right direction. Therefore, a plate material like a conventional stroller is unnecessary, and weight reduction can be achieved. In addition, since the rear upper connecting stay 33 is located below the pivot of the back support frame 34, even if the bottom seat base material 46 bends under the infant's own weight, the buttocks will not touch it. The upper part of the rear side is connected to the stay 33, which will not cause discomfort.

On the other hand, as shown in FIG. 3 , to the shaft 30 connecting the side vertical pipe 17 and the frame mounting member 31 , the front end of a side plate 50 for protecting the side of an infant is pivotally attached. In addition, as shown in FIG. 4 , bearings 51 , 51 are provided on both left and right end portions of the horizontal bar portion 34 b connecting the left and right side frame portions 34 a of the backrest support frame 34 . And the lower end part of the headrest 52 which protects the head of an infant is pivotally attached to these bearings 51 and 51 via the shaft 53. As shown in FIG. Further, pins 54 are protrudingly provided on both left and right side portions of the headrest 52 , and the pins 54 can be engaged with elongated holes 155 formed in the rear end portions of the side plates 50 .

FIG. 3 is a view showing a state in which the back rest support frame 34 is tilted and the infant is laid down, and the headrest 52 is in a state of standing upward with respect to the plane of the back rest support frame 34 . Therefore, both sides of the infant are protected by the left and right side panels 50 , and the head of the infant is protected by the raised headrest 52 . At this time, if the length of the inclination stretching belt 48 is shortened (refer to FIG. 2 ), and the inclination angle of the supporting frame 34 is increased as shown in FIG. By the engagement of the pin 54 and the elongated hole 155 , the headrest 52 swings clockwise about the shaft 53 in FIG. 3 , and the headrest 52 and the back support frame 34 become substantially flush. Therefore, the baby can be brought into a lying state.

On the other hand, in the state shown in FIG. 5, if the inclination stretching belt 48 is loosened, the side plate 50 and the back support frame 34 swing downward together, and the headrest 52 swings upward thereupon to become the position shown in FIG. 3 . The state shown can protect the head of infants.

In addition, in the case of being folded in half, after making the side plate 50 and the back support frame 34 into the state shown in FIG. Conventional strollers are folded in the same way. FIG. 6 shows the state of the back support frame 34, the side plate 50, and the like in the folded state.

Next, the push rod 15 of the stroller of the present invention will be described in further detail with reference to the drawings. Here, Fig. 1 and Fig. 7 to Fig. 15 show details of the push rod 15 of the stroller of the present invention.

As shown in FIG. 1 , the hand push lever 15 of this embodiment includes a pair of side pipes 67 extending upward from the unlocking member 38 and the locking member 42 , and a U-shaped pipe arranged between the pair of side pipes 67 . pipe 68, and the remote operation device 37 provided on the U-shaped pipe 68. A wire 69 is connected to the remote operation device 37 , and the wire 69 is connected to the lock release member 38 provided below each side pipe 67 .

In addition, as shown in Fig. 1, Fig. 7, Fig. 8 and Fig. 9, the hand push rod 15 is equipped with a side joint 61 which is arranged on each side pipe 67 and has a side external gear 71 and a wire guide path 90; The other external gear 83 , the wire guide path 90 , and the other joint 65 , which is rotatable with respect to the corresponding one joint 61 , are provided on the square pipe 68 .

Between the one joint 61 and the other joint 65 , the internal gear 63 is detachably engaged with the one external gear 71 of the one joint 61 and the other external gear 83 of the other joint 65 .

Further, between the other joint 65 and the internal gear 63 , a guide member 64 having a wire guide shaft 74 that guides the wire 69 to the vicinity of the rotation center of the other joint 65 is provided.

Furthermore, on the other joint 65, a button 66 for disengaging the other external gear 83 and the internal gear 63 of the other joint 65 is provided, and between the internal gear 63 and the one joint 61, a receiving The internal gear 63 pushed by the button 66 is pushed back by the spring 62 (see FIG. 14( b )).

Next, the one joint 61 , the internal gear 63 , the guide member 64 , and the other joint 65 will be described in more detail with reference to FIGS. 10 to 13 .

First, one joint 61 has one external gear 71 that engages with the internal gear 63, a spring fixing shaft 72 that supports and fixes the spring 62 from the inside, and a wire guide path 90 that guides the wire 69, and the spring 62 is attached to the fixing shaft 72. on (see Figure 10(a), Figure 10(b)).

In addition, the internal gear 63 is provided between the one joint 61 and the other joint 65. As shown in FIG. In addition, as shown in FIG. 11( b ), a wire guide shaft 74 inserted into the guide member 64 is formed on the opposite side of the internal gear 63 to the fixed space 73 (see FIG. 12( a ), FIG. 12( b )). Furthermore, a notch 99 for holding the wire 69 is provided on the outer periphery of the internal gear 63 on the side tube 67 side (downward side).

Next, the guide member 64 will be described with reference to FIGS. 12( a ) and 12 ( b ). As shown in FIGS. 12( a ) and 12 ( b ), the guide member 64 has a holding plate 76 and a wire guide shaft 74 provided near the rotation center of the other joint 65 to guide the wire 69 . The wire guide shaft 74 is held by the holding plate 76 and inserted into the guide shaft fixing space 79 of the internal gear 63 (see FIG. 11( a ) and FIG. 11( b )). Furthermore, on the holding plate 76, a guide protrusion 77 for guiding the wire 69 is provided.

Here, as shown in FIG. 12(a) and FIG. 12(b), the guide protrusion 77 provided on the holding plate 76 forms a space 89 on the U-shaped tube side (upper side), and a space 89 on the side tube side (lower side). A cutout 81 for holding the wire 69 is formed. Among them, the space 89 is provided so that the wire 69 can freely rotate above the wire guide shaft 74, and the notch 81 is to securely guide the wire 69 to the vicinity of the rotation center by holding the wire 69 under the internal gear 63. part. In addition, the retaining plate 76 of the guide member 64 is provided with a wire 69 that is configured to reduce the force applied to the wire 69 when the guide member 64 is pushed by the protrusion 86 of the button 66 (refer to FIG. 14( b )). The retreat groove 82 that moves back.

In addition, as shown in FIG. 13( a ), the other joint 65 is provided with the other external gear 83 engaged with the internal gear 63 , the hollow portion 84 inserted into the guide member 64 , and the wire for guiding the wire 69 . Guided path 90 . Furthermore, as shown in FIG. 13( b ), a button insertion portion 85 into which the button 66 is inserted is provided on the surface of the other joint 65 opposite to the hollow portion 84 .

Next, the method of assembling the one joint 61 , the spring 62 , the internal gear 63 , the guide member 64 and the other joint 65 will be described with reference to FIGS. 7 , 8 , 9 and 14( a ).

As shown in FIG. 7 , FIG. 8 , FIG. 9 and FIG. 14( a ), the spring 62 is inserted into the spring fixing shaft 72 of one joint 61 . Next, the spring 62 fixed by the spring fixing shaft 72 is inserted into the spring fixing space 73 of the internal gear 63 . In the guide shaft fixing space 79 of the inner gear 63, the wire guide shaft 74 of the guide member 64 is plugged and fixed, and the fixed guide member 64 is inserted in the hollow portion 84 of the other joint 65, and is connected with the button 66. The protruding portion 86 contacts. At this time, the internal gear 63 engages with both the one external gear 71 of the one joint 61 and the other external gear 83 of the other joint 65 .

Next, the operation of the present embodiment having such a configuration will be described.

As shown in FIG. 14( a ), when the button 66 is not pressed, the internal gear 63 engages with both the one external gear 71 of the one joint 61 and the other external gear 83 of the other joint 65 . Therefore, since the other joint 65 is fixed without rotating around the one joint 61 , the U-shaped pipe 68 provided on the other joint 65 can be fixed to the side pipe 67 provided on the one joint 61 .

On the other hand, as shown in FIG. 14( b), by pressing the button 66 provided on the other joint 65 on the U-shaped pipe 68, the protrusion 86 of the button 66 pushes the internal gear 63, which can The engagement between the internal gear 63 and the other external gear 83 of the other joint 65 is released. Therefore, the other joint 65 can freely rotate around the one joint 61 , so that the U-shaped pipe 68 provided on the other joint 65 can freely rotate relative to the side pipe 67 provided on the one joint 61 .

Therefore, the height of the U-shaped pipe 68 from the ground can be adjusted, and the baby carriage can be easily pushed by adjusting the U-shaped pipe 68 to a height suitable for the operator.

In addition, when storing the baby carriage, by bending the U-shaped pipe 68, the length in the height direction of the baby carriage can be shortened, and the space for storing the baby carriage can be saved.

In addition, as shown in Figure 12(a) and Figure 12(b), since the retaining plate 76 of the guide member 64 is provided with a retreat groove 82 through which the wire 69 passes, the wire can be moved when the button 66 is pushed. 69 move back and move back in the slot 82. Therefore, it is possible to reduce the force applied to the wire 69 when the button 66 is pushed.

Next, the operation of the wire 69 when the U-shaped tube 68 is rotated relative to the side tube 67 will be described.

As shown in Fig. 15 (a) and Fig. 15 (b), under the situation that the U-shaped pipe 68 is not bent, the wire 69 extends from the lock release part 38 of the side pipe 67 to the U-shaped pipe 68. The remote operation device 37 is disposed in a substantially straight line between the one joint 61 and the other joint 65 while devolving around the wire guide shaft 74 .

On the other hand, when the U-shaped pipe 68 is bent, the other joint 65 turns relative to the one joint 61 . At this time, as shown in Fig. 15(c) and Fig. 15(d), the wire 69 extends from the lock release part 38 of the side pipe 67 to the remote operation device 37 of the U-shaped pipe 68, and is wound around the wire guide. The shaft 74 is bent.

Here, since the wire guide shaft 74 around which the wire 69 is wound is provided near the rotation center of the other joint 65 , the wire 69 can pass through the vicinity of the rotation center of the other joint 65 . Therefore, the wire 69 can be wound around the rotation center of the other joint 65 without being wound outside the internal gear 63 .

Therefore, it is not necessary to rotate the wire 69 in advance to form the ring 59 to create an idle amount (see FIG. 21 ). Therefore, it is only necessary to use the wire 69 of the minimum required length, so that the weight of the stroller can be reduced.

In addition, since the wire 69 is connected to the unlocking member 38 without forming the loop 59, when the button (not shown) of the remote operation device 37 is pushed and the wire 69 is pulled upward, there will be no unnecessary trouble. resistance effect. Therefore, the wire 69 connected to the lock release member 38 can be easily driven and operated.

In addition, since the wire 69 does not need to be looped, it is not necessary to form a loop of the wire 69 in the process of manufacturing the stroller.

In addition, since the guide protrusion 77 provided on the guide member 64 has a space 89 on the U-shaped pipe side (upper side), the wire 69 can freely move in the space 89 . Therefore, the wire 69 can freely rotate upward around the wire guide shaft 74 (see FIG. 15 ).

In addition, as shown in Fig. 12(a) and Fig. 12(b), the guide protrusion 77 provided on the guide member 64 has a notch 81 on the side pipe side (lower side), and, as Fig. 11(a), Fig. As shown in 11(b), the internal gear 63 also has a notch 99 on the side pipe side (downward side). Therefore, the wire 69 can be held below the guide member 64 and the internal gear 63 . Therefore, the wire 69 can be reliably guided to the vicinity of the rotation center.

2nd embodiment

Next, a second embodiment of the present invention will be described with reference to FIGS. 16 to 20 . In the second embodiment shown in FIGS. 16 to 20 , a wire guide shaft 87 is provided on one of the one joint 61 and the other joint 65 instead of the guide member 64 that guides the wire 69 . The first embodiment shown in FIGS. 1 to 15 is substantially the same.

In the second embodiment shown in FIGS. 16 to 20 , the same parts as those in the first embodiment shown in FIGS. 1 to 15 are denoted by the same reference numerals and detailed description thereof will be omitted.

First, the configuration in which the wire guide shaft 87 is provided on one joint 61 will be described with reference to FIGS. 16 to 18 .

As shown in FIGS. 16 , 17 and 18 , one joint 61 has a joint main body 92 and a joint cover 93 covering the joint main body 92 .

Among them, the joint body 92 of one joint 61 is provided with a wire guide path 91 for guiding the wire 69 and a wire guide shaft 87 for guiding the wire 69 near the rotation center of the other joint 65 . In addition, on the side of the internal gear 63 side of the wire guide shaft 87, a protrusion 97 supporting the spring 62 is provided so that the spring 62 does not enter the wire guide path 91 (see FIG. 17 ).

Here, FIG. 18(a) is a schematic view of the joint body 92 of one joint 61 viewed from above, and FIG. 18(b) is a schematic view of the joint cover 93 viewed from above. This is a schematic view of a state in which the wire 69 is inserted into the notch 94 of the joint body 92 and the wire guide hole 95 of the joint cover 93 as viewed from above after the joint cover 93 is assembled.

As shown in FIG. 18( a ), on the U-shaped pipe 68 side (upper side) of the joint body 92 of the one joint 61 , a notch 94 extending in the rotation direction of the other joint 65 is provided.

In addition, as shown in FIG. 18( b ), a wire guide hole 95 through which the wire 69 passes is provided in the joint cover 93 . And, as shown in FIG. 18( c ), the joint cover 93 is disposed on the U-shaped pipe side (upper side) of the joint main body 92 , and extends along the rotation direction of the other joint 65 provided on the joint main body 92 . The incision 94 is covered.

In addition, as shown in FIG. 18( c), the wire 69 is arranged such that it passes through a notch 94 provided on the joint body 92 and a wire guide hole 95 provided on the joint cover 93 disposed on the joint body 92 . .

Here, when the other joint 65 rotates relative to the one joint 61 , the wire 69 can freely move along the notch 94 above the wire guide shaft 87 . In addition, the joint cover 93 can freely rotate on the joint main body 92, and when the other joint 65 rotates relative to the one joint 61, the joint cover 93 is pushed by the wire 69 passing through the wire guide hole 95 and is pressed against the joint main body 92. Turn up.

In addition, as shown in FIG. 17 , the button 66 has a protrusion 86 capable of contacting the internal gear 63 , and a protruding rod 88 integrally provided on the protrusion 86 and penetrating the internal gear.

Next, a method of assembling the joint body 92 and the joint cover 93 of the one joint 61 , the spring 62 , the internal gear 63 , the other joint 65 and the button 66 will be described with reference to FIGS. 16 to 19 .

As shown in FIGS. 16 to 19 , the joint cover 93 of the one joint 61 is disposed on the U-shaped pipe side (upper side) of the joint main body 92 . Here, the joint cover 93 covers the notch 94 extending in the rotation direction of the other joint 65 on the U-shaped pipe side (upper side) of the joint main body 92 .

Next, on the side of the wire guide shaft 87 of the joint main body 92 , the spring 62 is arranged on the convex portion 97 provided on the side of the internal gear 63 . Next, the internal gear 63 is fitted into the joint main body 92 of the one joint 61 , and the spring 62 is inserted into the spring fixing space 73 of the internal gear 63 . Next, the other joint 65 is fitted into the joint main body 92 of the one joint 61 . At this time, the internal gear 63 is engaged with both the one external gear 71 of the one joint 61 and the other external gear 83 of the other joint 65 .

Then, the protruding rod 88 of the button 66 (see FIG. 17 ) is inserted through the hole 88d of the other joint 65, the hole 88c of the internal gear 63, the inside of the spring 62, the hole 88b of the joint main body 92, and the opening of the joint cover 93. hole 88a for insertion. In this case, the joint cover 93, the joint main body 92, the spring 62, the internal gear 63, and the other joint 65 are integrally assembled.

Next, the operation of the present embodiment having such a configuration will be described.

As shown in FIG. 19( a ), when the button 66 is not pressed, the internal gear 63 engages with both the one external gear 71 of the one joint 61 and the other external gear 83 of the other joint 65 . Therefore, the other joint 65 is fixed without rotating around the one joint 61 , so that the U-shaped pipe 68 provided on the other joint 65 can be fixed to the side pipe 67 provided on the one joint 61 .

On the other hand, as shown in Figure 19 (b), by pressing the button 66 provided on the other joint 65, the protrusion 86 of the button 66 pushes the internal gear 63, so that the internal gear 63 can be connected to the other joint 65. The engagement of the other external gear 83 is released. Therefore, the other joint 65 can freely rotate around the one joint 61 , so that the U-shaped pipe 68 provided on the other joint 65 can freely rotate relative to the side pipe 67 provided on the one joint 61 .

Therefore, the height of the U-shaped pipe 68 from the ground can be adjusted, and the baby carriage can be easily pushed by adjusting the U-shaped pipe 68 to a height suitable for the operator.

In addition, when storing the baby carriage, by bending the U-shaped pipe 68, the length in the height direction of the baby carriage can be shortened, and the space for storing the baby carriage can be saved.

Next, the operation of the wire 69 when the U-shaped tube 68 is rotated relative to the side tube 67 will be described.

As shown in FIG. 20( a ), without bending the U-shaped tube 68 , the metal wire 69 passes through the notch 94 provided on the joint body 92 and extending along the rotation direction of the other joint 65 . , and the wire guide hole 95 provided on the joint cover 93 (refer to FIG. 18(c)). In this case, the wire 69 extends from the unlocking member 38 of the side pipe 67 to the remote control device 37 of the U-shaped pipe 68 , and is substantially linear between the one joint 61 and the other joint 65 .

On the other hand, as shown in FIG. 20 (b), when the U-shaped pipe 68 is bent, the other joint 65 rotates relative to the one joint 61. At this time, the wire 69 is locked from the side pipe 67. The release member 38 extends to the remote control device 37 of the U-shaped pipe 68 and is wound around the wire guide shaft 87 to be bent.

Here, since the wire guide shaft 87 around which the wire 69 is wound is provided near the rotation center of the other joint 65 , the wire 69 can pass through the vicinity of the rotation center of the other joint 65 . Therefore, the wire 69 can be wound around the rotation center of the other joint 65 without going around the outside of the internal gear 63 .

Moreover, since the protrusion 97 is provided on the side of the wire guide shaft 87 , it is possible to prevent the spring 62 from falling into the wire guide path 91 of the one joint 61 . Therefore, the wire 69 can be reliably wound around the wire guide shaft 87 .

Thereby, it is not necessary to rotate the wire 69 in advance to form the ring 59 and to create an idle amount (see FIG. 21 ). Therefore, it is only necessary to use the wire 69 of the minimum required length, so that the weight of the stroller can be reduced.

In addition, since the wire 69 is connected to the unlocking member 38 without forming the loop 59, there is no unnecessary resistance when the button (not shown) of the remote operation device 37 is pressed to pull the wire 69 upward. effect. Therefore, the wire 69 connected to the lock release member 38 can be easily driven and operated.

In addition, since the wire 69 does not need to be looped, it is not necessary to form a loop of the wire 69 in the process of manufacturing the stroller.

In addition, as shown in FIG. 18( a), since the joint main body 92 of one joint 61 has a notch 94 provided on the U-shaped pipe side and extending along the rotation direction of the other joint 65, the wire 69 can be The inside of the extended cutout 94 is free to move. Therefore, as shown in FIG. 20( a ) and FIG. 20( b ), the wire 69 can freely rotate around the wire guide shaft 87 .

Furthermore, as shown in FIG. 18( b ), the joint cover 93 of one joint 61 is rotatable in the rotation direction of the other joint 65 and has a wire guide hole 95 through which the wire 69 passes. Therefore, as shown in Fig. 20(a) and Fig. 20(b), the wire 69 can freely rotate around the wire guide shaft 87, and the slit 94 extended on the joint body 92 can be hidden, thereby enabling good The appearance of the one joint 61 is kept as good as possible.

In addition, the protrusion 97 provided on the side of the wire guide shaft 87 may be any as long as it can support the spring 62 .

In addition, the size of the wire guide shaft 87 and the spring 62 can also be adjusted so that the spring 62 does not fall into the wire guide path 91 . In this case, the convex portion 97 does not need to be provided.

In the above-mentioned embodiment, the example in which one joint 61 has the joint main body 92, the joint cover 93, and the wire guide shaft 87 was illustrated, but it is not limited to this, and the other joint 65 may have the joint main body 92, the joint cover 93. , and the structure of the wire guide shaft 87.

third embodiment

Next, a third embodiment of the present invention will be described with reference to FIGS. 21 and 22 . In the third embodiment shown in FIGS. 21 and 22 , the same parts as those in the first embodiment shown in FIGS. 1 to 15 are denoted by the same reference numerals and detailed description thereof will be omitted. 21 is a perspective view of the unlocking member 38 slidably provided on the push rod 15, and FIG. 22 is a longitudinal sectional view of the unlocking member 38. As shown in FIG.

As shown in FIGS. 1 and 22 , the hand push rod 15 of this embodiment includes a pair of side pipes 67 having elongated holes 155 extending in the axial direction on the side surfaces, and a pair of side pipes 67 disposed between the pair of side pipes 67 . U-shaped pipe 68.

In addition, as shown in FIG. 22 , a guide member 156 extending in the axial direction of the side pipe 67 and having a protruding portion 156 a is inserted and fixed in the side pipe 67 . In addition, inside the side pipe 67 , an inner slide member 157 is provided so as to be slidable in the axial direction along the guide member 156 . Between the protruding portion 156 a of the guide member 156 and the inner slide member 157 , a spring 161 that biases the inner slide member 157 to an initial position relative to the guide member 156 is stretched. On the outer surface of the side pipe 67, a substantially plate-shaped lock release member (outer slide member) 38 is provided. The lengthwise direction is slidably mounted with respect to the outer surface of the side pipe 67 .

In addition, as shown in FIG. 21 and FIG. 22, on the hand push rod 15, a planar portion 15a is formed on a part thereof, and a substantially plate-shaped lock release member 38 is mounted on the push rod 15 so as to be slidable along the hand push rod 15. on the outer surface of the planar portion 15a. On the outer surface of the inner side (side vertical pipe 17 side) of the lock releasing member 38, a lock releasing lever (protruding portion) 39 protruding in a substantially horizontal direction is protruded.

Moreover, as shown in FIG. 22, the push rod 15 is provided with the long hole 155 extended in the axial direction as mentioned above. The base portion 38 a of the substantially plate-shaped lock releasing member 38 provided on the side pipe 67 side is slidably engaged in the elongated hole 155 .

In addition, as shown in FIG. 22 , a guide member 156 is inserted and fixed in the hand push rod 15 , and an inner slide member 157 is slidably mounted on a side surface of the guide member 156 . In addition, the inner slide member 157 is slidably engaged along an elongated hole 158 formed in the guide member 156 and extending in the axial direction. In addition, the inside slide member 157 is integrally connected to the lock releasing member 38 by a connecting member 159 such as a self-tapping screw attached to the lock releasing member 38 . Further, the front end portion (lower end portion) of the wire 60 operated by the remote operation device 37 is connected to the inner slide member 157 . Furthermore, as described above, the spring 161 is stretched between the guide member 156 and the inner slide member 157 , and biases the inner slide member 157 to be at an initial position, that is, downward with respect to the guide member 156 .

Then, in order to swing the front legs 12 and rear legs 14 of the stroller in a substantially parallel state, fold the main body of the stroller in two for easy portability, and operate the remote control device 37 to pull up the wire 60, then The inner slide member 157 is pulled upward against the spring 161 together with the lock release member 38 constituting the outer slide member. Therefore, the unlocking member 38 constituting the outer sliding member moves upward along the longitudinal direction of the elongated hole 155 . Therefore, in the unfolded state of the stroller, the lock member 20 (refer to FIG. 1 ), which engages with the free end of the bracket 19 and maintains the unfolded state, is moved along by the lock release lever 39 protruding from the lock release member 38 . Sliding along the side longitudinal tube 17. As a result, the engagement between the lock member 20 and the bracket 19 can be disengaged, and the stroller main body can be folded in half.

The unlocking member 38 constituting the above-mentioned outer sliding member is formed in a substantially plate shape. Therefore, it becomes lighter than the conventional cylindrical lock release member (refer FIG. 23), and weight reduction of a stroller main body etc. can be achieved. In addition, the elongated hole 155 extending in the longitudinal direction for guiding the sliding of the unlocking member 38 constituting the outer sliding member only needs to be formed on only one side of the pipe, and the processing can also be simplified.

In addition, in this embodiment, it is shown that the present invention is applied to the unlocking member 38, but it is also possible to apply the hand pusher 15 of the stroller to the locking member 42 held in the face-to-face push state or the back push state. In addition, it is also possible to reduce the weight of this component. Furthermore, in the above-mentioned embodiment, the example in which the inner sliding member 157 is moved via a wire or the like by the remote operation device, and the outer sliding member is operated through the inner sliding member 157 is shown, but it is not limited to this, and the outer sliding member may be directly moved by hand. Slider action.

Claims (8)

1. A push rod for a stroller, characterized in that it has: a pair of side pipes having elongated holes extending in the axial direction on the sides; U-shaped tube, arranged between a pair of side tubes; The guide part extends along the axial direction of the side tube and is plugged and fixed in at least one side tube; an inner slide member, inside the side tube, slidably installed in the axial direction along the guide member; a spring, stretched between the guide part and the inner sliding part, exerts force so that the inner sliding part is in an initial position relative to the guide part; The plate-shaped outer sliding part is arranged on the outer surface of the side pipe, and is connected to the inner sliding part through the long hole of the side pipe. Along the length direction of the long hole of the side pipe, surface slidably mounted, The side surface of the side pipe has a planar planar portion which is only a part of the side surface in the circumferential direction perpendicular to the axial direction, the long hole is formed in the planar portion, The plate-shaped outer sliding member is located only on the planar portion in the side surface of the side pipe, and slides on the planar portion, The outer sliding member has a base protruding in the horizontal direction and protruding into the side pipe through the elongated hole, and is connected to the inner sliding member at the base. 2. The hand push rod of the baby carriage as claimed in claim 1, characterized in that, Also have: The remote operation device is set on the U-shaped tube; a wire disposed on the remote operation device and attached to the inner sliding member; By operating the wire with the remote operation device, the outer sliding member slides relative to the outer surface of the side pipe along the length direction of the elongated hole of the side pipe via the inner sliding member. 3. The hand push bar of the baby carriage according to claim 1, wherein the outer sliding member is manually slidably installed with respect to the outer surface of the side pipe. 4. The push bar for baby carriages according to claim 1, wherein the outer sliding member is connected to the inner sliding member via a connecting member. 5. The stroller pushrod according to claim 1, which is a foldable stroller pushrod having a locking member that is connected to a bracket that is pivotally mounted on the rear leg. The free ends are engaged to maintain the stroller in an unfolded state, The outer slide member is a lock release member, and when the outer slide member is pulled up, the lock release lever of the outer slide member comes into contact with the operation plate of the lock member, and the lock member is pulled up, so that the stroller can be brought into a folded state. . 6. The hand pusher of the stroller according to claim 1, wherein the outer sliding member is a locking member that holds the pusher in a face-to-face push state or a back-side push state. 7 . The stroller pusher according to claim 1 , wherein a protruding portion protruding in the horizontal direction is provided on the inner outer surface of the outer sliding member. 7 . 8. The hand pusher for a stroller according to claim 1, wherein a base portion slidably engaged with the elongated hole of the side pipe is provided on the outer surface of the outer sliding member.