JP4481032B2 - Child seat lock mechanism to stroller - Google Patents

Description

  The present invention relates to a child seat locking mechanism that can be attached to and detached from a stroller body.

  In general, a child seat is used when an infant, such as a child under one, is put on a passenger car. Such a child seat can be attached to and detached from the passenger car seat, and when removed from the passenger car seat, it can be used as a carry for moving an infant while lying on a child seat, or as a baby carriage seat attached to a baby stroller. There are proposals that can be used.

  FIG. 7 is a perspective view showing the shape of the child seat 10 that can be attached to the stroller body. The child seat 10 is provided with a handle 11 that also serves as an inverted U-shaped sunshade mounting member so as to be swingable. That is, handle attachment portions 12 are provided on both sides of the child seat 10, and the tip of the handle 11 is inserted into the handle attachment portion 12 so as to be swingable. In addition, a hook-like belt guide 13 protruding rearward when the child seat 10 is fixed is provided. The child seat 10 can be detachably attached to the stroller body 14 as shown in FIG. By the way, in the child seat that can be attached to the baby stroller body, the child seat is provided with a lock mechanism for fixing the child seat to the baby stroller body.

However, the detachable lever provided on the child seat side for operating the locking mechanism is unavoidably located at a position where the child's hand can reach due to the structure, or at a position where the child seat is easy to contact while using the child seat as a carry. In some cases, the detachable lever may be operated incorrectly.
Japanese Patent Laid-Open No. 2002-205586

  An object of the present invention is to provide a child seat locking mechanism in which a detachable lever is not operated by mistake.

  Further, in the case where the detachable lever is not operated by mistake as described above, when the child seat is set in the stroller body, it is not necessary to release the second lock mechanism which is the erroneous operation preventing means each time. An object is to obtain a child seat locking mechanism.

  According to the first aspect of the present invention, a lock member that can be engaged with and disengaged from a pin mounted on an armrest of a stroller body, a stopper that rotates integrally with the lock member, and a stopper step portion of the stopper can be engaged and disengaged. And a stopper release member having an engaging protrusion, wherein the unlocking state is maintained when the child seat is removed from the stroller body, and the detachable lever for operating the lock member on the child seat is provided. A second lock mechanism for restricting movement in the unlocking direction is provided.

  According to a second aspect of the present invention, in the first aspect of the invention, the second lock mechanism is a lock button that advances and retreats within an operating area of the detachable lever.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the lock member is mounted with the detachable lever at an angle at which the lock claw of the lock member can be detached from the pin mounted on the armrest. The stopper shaft is mounted so as to be rotatable only in the unlocking direction.

  According to a fourth aspect of the present invention, in the third aspect of the invention, the stopper shaft to which the detachable lever is attached is formed by a shaft having notched flat portions formed on both sides, and the stopper shaft is the lock. The hole is formed in a hole formed in the member, and the hole is formed with a fan-shaped notch that allows the lock member to rotate only in the unlocking direction with respect to the stopper shaft. And

  The invention according to claim 1 or 2 has a function in which the unlocked state is maintained even when the detachable lever is operated and the hand is released when the child seat is detached from the stroller body, and the child seat is attached to the stroller body. In this case, it is possible to prevent the lock member from being operated in the unlocking direction due to an erroneous operation of the detachable lever. In the invention according to claim 3 or 4, when the child seat is set on the stroller body, it is not necessary to release the second lock mechanism each time, and the operability can be improved.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a view showing a state in which the child seat of the present invention is mounted on a baby stroller body, and both side portions of the child seat 15 are provided with locking portions 15a having an inverted U-shaped cross section that engage with the armrest 16 of the baby stroller body. A detachable locking mechanism 20 described later is mounted in the locking portion 15a. On the other hand, an elongated hole 17 having a narrow width is formed on the upper surface of the armrest 16, and a pin 18 extending in the left-right direction is provided in the armrest 16, and the attachment / detachment mechanism 20 is inserted into the elongated hole 17. The pin 18 can be engaged.

  FIG. 2 is an exploded perspective view of the detachable lock mechanism 20. The detachable lock mechanism 20 has frame plates 21, 21 on the left and right side surfaces, and a plate body between the left and right frame plates 21, 21. A locking member 22 made of the stopper and a stopper 23 and a stopper releasing member 24 provided on one side of the locking member 22 are disposed. The lock member 22, the stopper 23, and the stopper release member 24 are mounted in a plastic protective member 25 together with the left and right frame plates 21 and 21, and the removable lock mechanism 20 is inserted and removed by the protective member 25. The long hole 16 of the armrest 16 is not damaged.

  The protective member 25 and the left and right frame plates 21 are formed with notches 27 a and 27 b that open upward and engage with pins 18 provided on the armrest 16. The child seat is fixed to the inner upper surface of the locking portion 15a through an angle member 21b provided on the arm portion 21a.

  A stopper shaft 28 is rotatably mounted on the protection member 25 and the frame plate 21, and the lock member 22 and the stopper 23 are mounted on the stopper shaft 28. That is, the stopper shaft 28 is formed with notched flat portions on both sides, and the locking member 22 and the stopper 23 are also formed with holes 22a and 23a having the same shape as the stopper shaft 28. The locking member 22 and the stopper 23 are rotated together with the stopper shaft 28 by fitting 22a and 23a to the stopper shaft 28. The distal end portion of the stopper shaft 28 protrudes outward from the side surface of the locking portion 15a, and the detachable lever 30 is fixed to the protruding distal end portion. Further, a stopper releasing member 24 is rotatably mounted by a shaft 31 provided on the protective member 25 and the frame plate 21.

  The lock member 22 has a recess 22b that can be engaged with the shaft 31 at an intermediate portion, and a lock claw 22c that can be engaged with the pin 18 at a lower end portion. A guide surface 22d that is inclined upward on the toe side is formed at the edge.

  An arc 23b centering on the axis of the hole 23a is formed at the tip of the stopper 23, and a stopper step 23c extending in the radial direction toward the axis of the hole 23a is formed at one end of the arc 23b. Has been. Further, the stopper release member 24 is formed in an inverted L shape, and an intermediate portion thereof is fixed to the shaft 31, and can be engaged with the stopper step portion 23c at an intermediate portion of the horizontal arm 24a of the stopper release member 24. A simple engaging protrusion 24b is provided. Further, a stopper release operating portion 24d that can be engaged with the pin 18 from the opposite side of the lock claw 22c of the lock member 22 is formed at the lower end portion of the arm 24c extending below the stopper release member 24. An inclined portion 24e is formed at the upper edge of 24d. A spring 32 is provided between the horizontal arm 23d of the stopper 23 and the tip of the horizontal arm 24a of the stopper releasing member 24 to urge both of them in the pulling direction.

  FIG. 3 is a perspective view in which the components shown in FIG. 2 are combined into a unit and one frame plate 21 is omitted.

  When the child seat is mounted on the stroller body, the lower part of the child seat is inserted between the left and right armrests 16 and the detachable locking mechanism 20 provided on both sides of the child seat is inserted through the elongated holes 17 of the armrest 16. Into the armrest 16. Therefore, the child seat is lowered, and the notches 27a and 27b of the protective member 25 and the frame plate 21 are fitted to the pins 18 provided in the armrest 16, and the guide surface 22d of the lock member 22 is in contact with the pins 18. Then, the lock member 22 is rotated counterclockwise as shown in FIG. 4A against the spring 32 together with the stopper 23 by the guide surface 22d. Therefore, the lock claw 22c is moved laterally from the notches 27a and 27b, and the notch 27b of the frame plate 21 is engaged with the pin 18 of the armrest 16.

  Thus, when the notch 27b of the frame plate 21 is engaged with the pin 18, the lock member 22 is rotated clockwise by the spring 32 via the stopper 23, and the recess 22b is engaged with the shaft 31, The lock claw 22 c is engaged below the pin 18, and the stopper release operating portion 24 d of the stopper release member 24 is engaged below the pin 18. Therefore, the child seat is locked at that position (FIG. 4B).

  On the other hand, when removing the child seat from the stroller body, when the detachable lever 30 is rotated counterclockwise in FIG. 3, the lock member 22 is rotated counterclockwise, as shown in FIG. The lock claw 22c is moved to the unlock position. When the lock member 22 is thus rotated to the unlock position, the stopper 23 is also simultaneously rotated counterclockwise by the stopper shaft 28, and the stopper release member 24 is counterclockwise in FIG. The engaging projection 24b of the stopper release member 24 is engaged with the stopper step 23c of the stopper 23. Therefore, the rotation of the lock portion 22 is prevented, and the lock member 22 is automatically fixed at the unlocked position (FIG. 4A).

  Thus, even when the hand is released from the attachment / detachment lever 30, the lock member 22 is automatically fixed at the unlocked position, so that the child seat can be detached from the stroller body simply by lifting the child seat upward.

  On the other hand, when the child seat is lifted as described above, the stopper release operating portion 24e abuts against the pin 18 in the middle thereof, and the stopper release member 24 is rotated clockwise around the shaft 31 against the spring 32. Therefore, the engaging protrusion 24b is detached from the stopper step 23c, and the stopper action is lost. Therefore, the lock member 22 is automatically returned from the lock release position to the position shown in FIG.

  FIG. 5 is an external partial view showing a state where the child seat is attached to the stroller body. The detachable lever 30 is provided on the outer surface of the child seat 15, and the second lock button 40 is provided above the detachable lever 30. Is arranged. The second lock button 40 is urged by a spring (not shown) disposed in the child seat 15 in a direction protruding into the rotation surface of the detachable lever 30, and is engaged with the detachable lever 30 from above. In addition, the movement of the detachable lever 30 in the unlocking direction is prevented.

  Thus, even when an infant touches the detachable lever 30 or touches the body while using the child seat as a carry, the detachable lever 30 is prevented from moving in the unlocking direction.

  However, when the child seat 15 as described above is set on the stroller body, the lock member 22 needs to rotate in a direction in which the engagement with the pin 18 is released, but is integrated with the lock member 22. Since the rotation of the detachable lever 30 is blocked by the second lock button 40, the lock member 22 cannot be rotated. Therefore, when the child seat 15 is usually set on the baby stroller body, it is necessary to set the child lock 15 while releasing the engagement with the detachable lever 30 by pushing the second lock button 40 against the spring, and the usability is deteriorated. There is also a problem.

Therefore, in the present invention, the hole 22a for fitting the stopper shaft 28 into the lock member 22 is formed in the same shape as the stopper shaft 28, and the lock member 22 is formed in the hole 22a as shown in FIG. A fan-shaped notch 22a ₁ that allows the lock member 22 to rotate only in the unlocking direction with respect to the stopper shaft 28 by an angle that allows the lock claw 22c to be detached from the pin 18 attached to the armrest. Is formed.

  Accordingly, even when the rotation of the detachable lever 30 is prevented by the second lock button 40, when the child seat 15 is set in the stroller body, the lock member 22 and the lock claw 22 c of the lock member 22 contact the pin 18. By contacting, the lock claw 22c of the lock member 22 rotates by an angle that allows it to be detached from the pin 18 attached to the armrest. Therefore, when the child seat 15 is set in the stroller body, it is not necessary to set the child seat 15 while pressing the second lock button 40 each time, and the usability can be improved.

The partial notch perspective view which shows the mounting state to the baby carriage main body of the child seat of this invention. The disassembled perspective view of a detachable lock mechanism part. The figure which shows schematic structure of a detachable lock mechanism. (A), (b) is operation | movement explanatory drawing of an attachment / detachment lock mechanism. The partial external view which shows the state which mounted | wore the baby carriage main body with the child seat. The enlarged view of the hole for the fitting to the stopper shaft of a lock member. The perspective view of the conventional child seat. The figure which shows the state which mounted | wore the baby carriage main body with the child seat.

Explanation of symbols

10, 15 Child seat 11 Handle 12 Handle mounting portion 14 Stroller body 15a Child seat locking portion 16 Armrest 17 Long hole 18 Pin 20 Removable lock mechanism 21 Frame plate 22 Lock member 23 Stopper 22a, 23a Hole 22a ₁ Notch 23c Stopper step Part 24 stopper release member 24b engaging part 27a, 27b notch 28 stopper shaft 30 detachable lever
40 Second lock button

Claims (3)

A lock member that can be engaged with and disengaged from the pin mounted on the armrest of the stroller body, a stopper that rotates integrally with the lock member, and a stopper release that has an engaging projection that can be engaged and disengaged at the stopper step of the stopper. and a member, in the child seat locking mechanism which is adapted to the child seat is unlocked state when removed from the stroller body is maintained,
The child seat is provided with a second lock mechanism for restricting movement in the unlocking direction of the detachable lever for operating the lock member ,
The lock member is mounted so that the lock claw of the lock member can rotate only in the unlocking direction with respect to the stopper shaft to which the detachable lever is mounted at an angle at which the lock claw of the lock member can be detached from the pin mounted on the armrest. And
When the child seat is mounted on the stroller body, the guide surface of the lock member abuts on the pin mounted on the armrest, and the lock member locks against the stopper shaft on which the detachable lever is mounted. A child seat locking mechanism, wherein the child seat locking mechanism rotates in a release direction . 2. The child seat lock mechanism according to claim 1, wherein the second lock mechanism is a lock button that advances and retreats within an operation area of the detachable lever. The detachable lever the stopper shaft mounted is, together with the flat portion cut away on both sides is formed by a shaft which is formed, the stopper shaft are fitted in a hole formed in the locking member, said hole the, characterized in that the locking member is fan-shaped notch is formed to allow rotation of only unlocking direction with respect to the stopper shaft, locking of the child seat according to claim 1 or 2, wherein mechanism.

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