JP2001321280A - Attaching and detaching system for attaching and detaching material and baby stroller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reliable attaching and detaching system for attaching and detaching material and a baby stroller, which enables the attaching and detaching material like a protecting frame to be easily attached and detached with one hand. SOLUTION: The system has a protruding retaining part 10 with a hollow part 103 extending vertically, an attaching and detaching material (protecting frame) 20 provided with a prop part 27 inserted into the hollow part 103, a locking system 300 which stops ascending of the prop part 27 inserted into the hollow part 103 as well as releases the stopping, and a driving system 200 which not only moves the prop part 27 upward, fixed with the locking system 300, but also ascends the prop part 27 with a fixed stroke when the locking system 300 is released. With the locking system being cancelled, the prop part 27 can support itself retained by the hollow part 103.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for attaching and detaching a detachable member and a baby chair, and more particularly to a mechanism for attaching and detaching a protective frame for a baby chair for a bathroom which is arranged in a bathroom to accommodate a baby and a baby chair using the same. About.

[0002]

2. Description of the Related Art When an adult having an infant takes a bath with the infant, there is known a baby chair for bathroom called a bath guard chair which is arranged in a bathroom for the purpose of accommodating the infant so as not to move around.

As this bathroom baby chair, for example, the one shown in the perspective view of FIG. 6 is commercially available. The baby chair 600 has a protrusion 602 at the front center of the base 601 to prevent the infant from shifting forward, armrests 603 and 604 on both sides of the base 601, and a backrest 6 at the rear.
06, a protective frame 607 that is detachably and rotatably attached to the front of both armrests 603, 604.

A mechanism for attaching and detaching the protective frame is fixed by engaging a lever 608 provided at one end of the protective frame 607 with an armrest 603, and attaching the protective frame 6 to the armrest 604 on the other side.
07 is rotatably held at the armrest 604 in an upright state, and the protection frame 607 is further moved from the upright state.
Can be detached from the armrest 604.

When the baby is accommodated in the baby chair 600, the lever 608 is depressed to unlock the protection frame 607 and the armrest 603, and then the protection frame 607 provided with the lever 608 is lifted and rotated. Let
After erecting the protective frame 607 on the other armrest 604,
The protective frame 604 is removed, the infant is seated with the infant's feet protruding from between the protrusion 602 and the armrests 603, 604, and then the protective frame 607 is attached to the armrest 604 upright. When the protection frame 607 is tilted sideways, the armrest 603 and the lever 60 of the protection frame 607 are moved.
8 automatically returns to completion.

[0006]

However, the above-mentioned mechanism for attaching and detaching the protection frame 607 of the baby chair 600 has a problem in that when the lever 608 is pushed down, the protection frame 6
07 and the armrest 603 are released, but when the lever 608 is returned to its original position, the engagement between the protection frame 607 and the armrest 603 is restored. Therefore, lever 60
It is necessary to perform an operation of lifting the protective frame 607 while pressing down the 8, and it is necessary to use both hands. If both hands are used for operation of the baby chair, the baby is left unattended during that time, and a cumbersome operation of lifting the baby and sitting down after the operation of the baby chair is required.

Therefore, if the protective frame can be removed with one hand,
The baby chair can be operated while holding the baby in the other hand, and the baby can be immediately seated, which is very convenient. In this case, it is necessary to consider safety as a baby chair.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a detachable mechanism for a detachable member and a detachable member which is excellent in safety, and which can easily detach and attach a detachable member such as a protective frame with one hand. It is an object of the present invention to provide a baby chair used for a protection frame attaching / detaching mechanism.

[0009]

According to a first aspect of the present invention, there is provided an attaching / detaching member including a holding portion having a hollow portion extending in a vertical direction, and a support portion inserted into the hollow portion. A lock mechanism capable of locking the support portion inserted into the hollow portion at a predetermined rising position and releasing the lock, and the support portion locked by the lock mechanism And an urging mechanism that raises the support column by a predetermined stroke when the lock of the lock mechanism is released, and in a state where the lock of the lock mechanism is released, There is provided an attachment / detachment mechanism for an attachment / detachment member, wherein the support portion is held by the hollow portion while being supported by the urging mechanism, and can stand on its own.

According to this detachable member attaching / detaching mechanism, when attaching the detachable member to the holding portion, the support portion of the attaching / detaching member is inserted into the hollow portion of the holding portion against the urging force of the urging mechanism.
Thus, the support is fixed by the lock mechanism while the upright is stopped by the urging mechanism. Also,
When removing the detachable member from the holding part, release the lock mechanism that locks the pillar part inserted in the hollow part, and the pillar part moves upward by the urging mechanism stroke by the urging force of the urging mechanism. Ascends and moves from the locking position of the lock mechanism,
The locking mechanism does not work again. And the support | pillar part of a detachable member can be pulled out from a holding part, and a detachable member can be pulled out from a holding part. In this case, when the lock mechanism is released, the support portion stands up from the hollow portion, so that the support portion remains held by the holding portion, and the detachable member from which the lock mechanism has been released comes out of the holding portion immediately. Nothing. Therefore, it is safe even if the lock mechanism is released by mistake. Therefore, when removing the detachable member, it is only necessary to release the lock mechanism and lift the detachable member from which the lock mechanism has been released, so that the operation can be easily performed with one hand. In addition, when the detachable member is attached, it is only necessary to insert the support portion of the detachable member into the hollow portion, so that the operation can be easily performed with one hand.

According to a second aspect of the present invention, in the protection frame attaching / detaching mechanism according to the first aspect, the lock mechanism is provided on the support column inserted into the hollow portion when the lock mechanism advances. An engagement claw that engages with a hole to lock the support portion from rising by the urging mechanism, separates from the engagement hole when retracted, a lever that retracts the engagement claw,
And a claw biasing means for biasing the engagement claw to move forward.

[0012] In such an attaching / detaching mechanism of the attaching / detaching member, since the pawl urging means moves the engaging pawl forward, the locking of the column portion by the engaging pawl is reliably performed. In addition, by operating the lever, the engaging claw can be retracted to release the engagement of the engaging claw with the support, so that the lock can be easily released with one hand.

According to a third aspect of the present invention, there is provided a baby chair including a protective frame disposed at a front portion of a base on which an infant sits and surrounding the front of the infant and a holding portion to which the protective frame is detachably fixed. The holding portion includes a hollow portion extending in a vertical direction, the protection frame includes a support portion inserted into the hollow portion, and the support portion inserted into the hollow portion is lifted at a predetermined position. A lock mechanism for performing locking and releasing the lock, and urging the support portion locked by the lock mechanism upward, and when the lock of the lock mechanism is released. An urging mechanism that raises the strut portion at a predetermined stroke, and in a state where the locking of the lock mechanism is released, the strut portion is held by the hollow portion while being supported by the urging mechanism. A feature of being independent To provide Chea.

This baby chair has the same operation as that of the first aspect because the mechanism for attaching and detaching the attachment member according to the first aspect is applied to the protective frame.

According to a fourth aspect of the present invention, in the baby chair according to the third aspect, the lock mechanism engages with an engagement hole provided in the support portion inserted into the hollow portion when the lock mechanism advances. An engaging claw separated from the engaging hole when retracted, a lever for retracting the engaging claw, and an engaging claw for moving the engaging claw forward are provided. And a claw biasing means for biasing the baby chair.

In this baby chair, the attachment / detachment mechanism of the attachment / detachment member according to the second aspect is applied to a protective frame, and thus has the same operation as the second aspect.

[0017]

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

FIG. 1 is a perspective view showing an embodiment of the baby chair of the present invention. The baby chair 1 is a bathroom baby chair which is arranged in a bathroom when an adult having an infant takes a bath with the infant and accommodates the infant and prevents the infant from moving around. Called.

The baby chair 1 includes a resin pedestal 2 on which a baby can be seated. On both sides of the pedestal 2, armrests 3 and 3 are provided which are integral with the pedestal 2. At the rear of the pedestal 2, a resin backrest 4 is provided in an upright state. The backrest portion 4 is rotatably supported on the pedestal 2 by a rotation shaft 5 so that it can be fixed at two positions: a standing position and a reclining position that is tilted backward.

At the center of the front of the pedestal 2, there is provided a substantially quadrangular prism-shaped resinous projecting and retaining portion 10 which tapers slightly toward the tip so as to protrude from the pedestal 2. At the upper end of the protruding holding portion 10, a protection frame 20 as a detachable member made of a loose arc-shaped resin whose both ends are bent rearward is detachably fixed. The protection frame 20 is disposed at the front of the baby chair and surrounds and protects the front of the baby. The protection frame 20 is a lever head 3 protruding from a lever opening 101 provided at a front portion of the protrusion holding portion 10.
The lock is released by depressing 30 and can be removed from the protruding holding portion 10.
The protection frame 20 is configured by integrally combining an upper frame 21 and a lower frame 22. On the upper surface of the upper frame 21 of the protective frame 20, a toy 2 that rotates and makes a sound so that infants can play.
3, 24 and 25 are provided.

FIG. 2 is a perspective view showing a state in which the protective frame 20 has been pulled out from the projecting holding section 10. As shown in FIG. As shown in FIG. 2, a bulging portion 26 is formed integrally with the lower frame 22 on the lower surface of the central portion of the lower frame 22 of the protection frame 20. On the lower surface of the bulging portion 26, the base end of a bottomed rectangular tube-like column 27 that tapers slightly toward the tip is formed integrally with the bulging portion 26. An engagement hole 28 is formed in the front surface of the support 27 so that an engagement claw to be described later can be engaged.
On the other hand, the protruding holding part 10 is a double tube of a square cylindrical outer wall 102 and a square cylindrical inner wall 104 provided in the outer wall 102 and forming a hollow part 103. The opening of the hollow portion 103 is formed on the upper surface of the protrusion holding portion 10. The periphery of the opening is a square frame portion 105 connecting the outer wall portion 102 and the inner wall portion 104.

Next, the structure of the projection holding section 10 will be described. FIG. 3 is a perspective view showing a state in which the lock mechanism and the urging mechanism housed in the outer wall portion 102 of the projection holding portion 10 are taken out from the projection holding portion 10, and the outer wall portion and the inner wall portion are shown. Absent. 4A and 4B are cross-sectional views showing the internal structure of the protruding holding unit and the protective frame, wherein FIG. 4A shows a state in which the column of the protective frame is locked by a lock mechanism, and FIG. Is released from the lock mechanism, and stands on the biasing mechanism and stands by itself in the hollow portion of the holding section.

As shown in FIG. 4, the projecting holding section 10 has a rectangular cylindrical outer wall section 102, in which an urging mechanism 200 and a lock mechanism 300 are accommodated. An opening 101 for a lever is formed in the front surface of the outer wall 102. Inside the outer wall portion 102, a rectangular cylindrical inner wall portion 104 that is slightly similar to the outer shape of the column portion 27 and becomes slightly narrower as the depth increases becomes a square frame portion 105 integrally formed with the upper end of the outer wall portion 102. And is provided in the vertical direction integrally therewith. The lower end of the inner wall 104 is open. A hollow portion 103 is formed on the inner surface of the inner wall portion 104,
The hollow portion 103 has a similar shape to the column portion 27, and has a rectangular column shape that extends in the vertical direction and gradually narrows as it becomes deeper.
As described above, since the hollow portion 103 and the pillar portion 27 have a rectangular cross section similar to each other, the protection frame 26 is formed by the protrusion holding portion 1.
It does not rotate with respect to 0 and is safe. Inner wall 1
A through hole 106 that penetrates the inner wall portion 104 is provided on the front surface of 04. The through hole 106 is formed in a size and a position through which an engagement claw described later passes.

As shown in FIG. 4, a biasing mechanism 200 is provided below the hollow portion 103. This urging mechanism 2
Reference numeral 00 denotes an urging means accommodating portion 210, a push-up box 220, and an urging means 230. Energizing means housing 2
Reference numeral 10 denotes a rectangular box shape having an open upper surface, and an outer wall portion 102.
Plate-shaped base 211 for closing the lower opening of the base (see FIG. 3)
A frame 212 having a U-shaped cross section and an open front is provided as three side walls. The base 211 is fixed to the lower opening of the outer wall 102. The push-up box 220 is provided with a square tubular body 221, and integrally provided on its upper surface with a square plate 222 protruding outward in four horizontal directions from the square tubular body 221, and the square tubular body 221 is biased. It is slidably housed in the means housing part 210. A compression spring 230 as an urging means is housed in the push-up box 220.
Is interposed between the inner surface of the square plate 222 on the upper surface of the push-up box 220 and the inner bottom surface of the biasing means accommodating portion 210 to urge the push-up box 220 upward.

As shown in FIG. 3, the urging means accommodating section 210
A window portion 213 is provided on the side wall portion of the box 220, and a horizontally long protrusion 223 provided on the side wall portion of the push-up box 220 protrudes from the window portion 213. Therefore, push-up box 2
20 is urged upward by the compression spring 230 and rises.
When the projection 223 abuts on the upper surface of the window 213, the position where the protrusion 223 abuts on the upper surface of the window 213 is a limit point of the ascent of the push-up box 220. On the other hand, when the push-up box 220 is pushed down against the urging of the compression spring 230, the lower end surface of the rectangular cylindrical body 221 comes into contact with the inner bottom surface of the urging means accommodating portion 210, and the lowering is stopped. That is, in the push-up box 220, the protrusion 223 is
3 and slides in the urging means accommodating portion 210 with a stroke between a position where the upper end of the urging member 3 abuts and a position where the lower end face of the rectangular cylindrical body 221 abuts against the inner bottom surface of the urging means accommodating portion 210. It has become.

The lock mechanism 300 is, as shown in FIG.
The frame 212 is supported by a pair of opposing support plates 310 integrally projecting forward from both side surfaces on the front side. The opposing support plate 310 is reinforced by the beams 311 which are laid over each other. The lock mechanism 300 includes the opposing support plate 3
It has a horizontal rotating shaft 320 supported between them. A base end of a lever head 330 protruding from the lever opening 101 provided on the front surface of the outer wall 102 is fixed to the rotating shaft 320. In addition, lever head 3
A base end of a shaft 340 that is orthogonal to the lever head 330 and that extends substantially in the vertical direction is integrally provided at the base end of 30. A space for ensuring rotation of the shaft 340 is provided between the shaft 340 and the inner surface of the outer wall portion 102. Shaft 3
An engagement claw 350 is integrally provided at the tip of the forcibly rearward in a direction orthogonal to the shaft 340. The tip of the engagement claw 350 passes through the through hole 106 formed in the inner wall 104. And can protrude into the hollow portion 103. The lower surface of the engagement claw 350 is a flat surface 351, and the upper surface is an inclined surface 352 that is inclined downward toward the front end. Further, a closing member 360 for closing the upper portion of the lever opening 101 is provided integrally with the lever head on the upper surface on the base end side of the lever head 330, and the upper surface of the closing member 360 has a substantially S-shape. A plate spring portion 370 is provided integrally as a claw urging means bent at a predetermined angle. The distal end side of the leaf spring portion 370 contacts the inner surface of the front surface of the outer wall portion 102. Therefore, the leaf spring portion 370 is
Is always urged toward the hollow portion 103, and the lever head 330 is urged to rotate upward. Therefore, the engagement claw 350 is advanced by the bias of the leaf spring portion 370, and the tip portion always enters the hollow portion 103 through the through hole 106. Also,
By pushing down the lever head 340 against the bias of the leaf spring portion 370, the shaft 3
The rotation of 40 causes the engagement claw 350 to retreat, so that the tip of the engagement claw 350 is recessed from the hollow portion 103. That is, the engagement claw 3
The tip of 50 is provided to be able to come and go inside the hollow portion 103. The shaft 340 is provided with a leaf spring portion 37 for molding.
A cutout portion 341 is provided on the surface facing 0.

FIG. 4A shows a state in which the support 27 of the protection frame 20 is fixed by the lock mechanism 300. In this state, almost the entire support 27 is hollow 10
3 and the distal end surface of the column 27 pushes down the urging mechanism 200. The column 27 is urged upward by the urging mechanism 200.
0 is the lower end 28a of the engaging hole 28 of the support 27.
As a result, the support 27 is locked and locked by the lock mechanism 300. In this case, since the lower surface 351 of the engaging claw 350 is substantially perpendicular to the elevating direction of the engaging hole 28, the engagement is reliably performed.

In the locked state shown in FIG. 4A, when the lever head 330 protruding from the front surface of the protruding holding portion 10 is pushed down, the shaft 340 biases the leaf spring portion 370 about the rotating shaft 320. , The engaging claw 350 is retracted, and its tip is retracted from the hollow portion 103. As a result, the engagement between the engaging claw 350 and the engaging hole 28 of the column 27 is released, and the column 27 is pushed up by the pushing box 2 of the urging mechanism 200.
The push-up box 22 pushes upward and moves up.
0 stops when the projection 223 abuts on the upper end of the window 213.

FIG. 4B shows a state where the lever head 330 is pushed down to release the engagement of the lock mechanism 300 with the column 27. FIG. 5 shows the state shown in FIG.
2 is a perspective view showing a state where the lock mechanism shown in FIG. 1 is released, and an outer wall portion 102 and an inner wall portion 104 are not shown.

As shown in these figures, once the lock of the column 27 by the lock mechanism 300 is released, the engaging hole 28 of the column 27 rises from the position locked by the locking claw 350. The lock mechanism 300 does not automatically work again to be locked. When the lock is released, the urging mechanism 200 stops at the rising end, and the distal end surface of the support 27 of the protection frame 20 is pushed up by the push-up box 20 of the urging mechanism 200.
The support 27 is surrounded by an inner wall 104 constituting the hollow portion 103. That is, the column 27 is in a state of being independent within the hollow portion 103. Therefore, only by operating the lock mechanism 300, the column 27 of the protection frame 20 remains inserted into the hollow portion 103 of the protruding holding portion 10, and the protection frame maintains the function of protecting the infant.

From the self-standing state shown in FIG.
When the 0 is lifted, the protection frame 20 can be pulled out of the projecting holding portion 10 as shown in FIG. Then, the infant is allowed to sit on the pedestal 2 with the feet of the infant protruding from between the protruding holding portion 10 and the armrest portion 3, and then the protective frame 20 is attached to the protruding holding portion 10, and the infant is placed in a baby chair. 1 is completed.

When attaching the protection frame 20 to the protruding holding portion 10, it is only necessary to insert the support 27 of the protection frame 20 into the hollow portion 103. When the support column 27 is inserted into the hollow portion 103, the front end surface of the support column 27 hits the engaging claw 350 that has advanced into the hollow portion 103. However, since the upper surface of the engagement claw 350 is the inclined surface 352, The engaging claw 350 is provided on the support 27.
And retreats against the urging of the leaf spring portion 370.
When the support 27 is continuously inserted into the hollow portion 103, the tip end surface of the support 27 comes into contact with the square plate 222 of the push-up box 220, and the support 2 further resists the urging force of the urging mechanism 200.
7 into the hollow portion 103, and
When the urging mechanism 200 is pushed down until the lower end edge 28a of the engaging claw 8 is located below the lower surface 351 of the engaging claw 350, the engaging claw 3
The lever 50 automatically advances by the urging force of the leaf spring portion 370, the tip of the engaging claw 350 advances into the hollow portion 103, and the lever head 330 rises. After the lever head 330 is raised, when the user releases his / her hand from the protection frame 20, the supporting column 27 is pushed by the urging mechanism 200.
The lower surface 351 of the engagement claw 350 is urged upward by the urging force of
The lower end edge 28a of the engaging hole 28 of the support 27 is
The urging force of 00 causes the engaging claw 350 to engage with the engaging hole 28, and the column 27 is stopped from rising. Thereby, the upward movement is locked and locked by the lock mechanism 300 while being urged upward by the urging mechanism 200, so that the support column 27 is fixed to the hollow portion 103, and the protection frame 20 is fixed to the protruding holding portion 10.

In such a protective frame attaching / detaching mechanism, the engagement between the engaging claw 350 of the lock mechanism 300 and the engaging hole 28 of the column 27 can be easily released with one hand by pushing down the lever head 330. After the engagement is released, the protection frame 20 can be easily removed with one hand by lifting the protection frame 20. When the protection frame 20 is attached, the support portion 27 may be simply inserted into the hollow portion 103.
It can be easily operated with one hand and has excellent operability. In addition, when the engagement is released, the protection frame 20 does not come out of the protruding holding portion 10 immediately, but the support 27 is self-standing in the hollow portion 103, so that the function of the protection frame 20 is maintained. . Therefore, even if the lock is released by mistake, the function of the protection frame 20 is maintained, so that the lock can be easily restored by noticing that the lock has been released and pushing back the protection frame, It is safe.

Although the engagement hole 28 is described as being penetrated through the wall of the column 27,
Since it is only necessary to stop the raising of the support portion 27 by engaging with the support 50, a groove shape may be used.

In the above description, the embodiment of the attaching / detaching mechanism of the protective frame of the bathroom baby chair is shown. However, the attaching / detaching mechanism of the attaching / detaching member of the present invention is not limited to other baby chairs, and is not limited to baby chairs. Can be used for tools.

[0036]

The attachment / detachment mechanism for the attachment / detachment member according to the present invention can easily attach / detach the attachment / detachment member with a simple operation.

Further, in the baby chair of the present invention, since such a detachable mechanism is employed in the protective frame, the protective frame can be detached safely by a simple operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a baby chair according to the present invention.

FIG. 2 is a perspective view showing a state in which a protection frame of the baby chair of FIG. 1 is removed.

FIG. 3 is a perspective view showing an internal structure of a protruding holding portion of the baby chair of FIG. 1, showing a state in which a protective frame is fixed to the protruding holding portion.

4A and 4B are cross-sectional views illustrating an internal structure of a protruding holding portion of the baby chair of FIG. 1, wherein FIG. 4A illustrates a state in which a protective frame is locked to the protruding holding portion, and FIG. The state in which the lock is released in the protruding holding portion is shown.

5 is a perspective view showing an internal structure of a protruding holding portion of the baby chair of FIG. 1, showing a state in which a protective frame is unlocked in the protruding holding portion.

FIG. 6 is a perspective view showing an example of a conventional bathroom baby chair.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Baby chair 2 Pedestal 3 Armrest part 10 Projection holding part 20 Protective frame 27 Prop part 28 Engagement hole 102 Outer wall part 103 Hollow part 104 Inner wall part 200 Urging mechanism 300 Lock mechanism 320 Rotating shaft 330 Lever head 350 Engagement claw

Claims (4)

[Claims] 1. A holding portion having a hollow portion extending in a vertical direction, a detachable member having a post inserted into the hollow portion, and a detachable member having a post inserted into the hollow portion at a predetermined position where the post is raised. A lock mechanism for performing locking and releasing the lock, and urging the support portion locked by the lock mechanism upward, and when the lock of the lock mechanism is released. An urging mechanism that raises the strut portion at a predetermined stroke, wherein the strut portion is held by the hollow portion while being supported by the urging mechanism in a state where the locking of the lock mechanism is released. An attachment / detachment mechanism for an attachment / detachment member, which can stand alone. 2. The attachment / detachment mechanism for an attachment / detachment member according to claim 1, wherein the lock mechanism engages with an engagement hole provided in the support portion inserted into the hollow portion when the lock mechanism moves forward. And the engaging claw that is separated from the engaging hole when retracted, a lever that retracts the engaging claw, and biases the engaging claw to move forward. And a claw urging means. 3. A baby chair comprising: a protection frame disposed at a front portion of a pedestal on which a baby sits and surrounding a front of the baby; and a holding portion to which the protection frame is detachably fixed. Is provided with a hollow portion extending in the vertical direction, the protective frame includes a pillar portion inserted into the hollow portion, performs locking at a predetermined position of the rise of the pillar portion inserted into the hollow portion, and A lock mechanism capable of releasing the lock, and a support member for urging the support portion locked by the lock mechanism upward, and a predetermined stroke when the lock mechanism is released. An urging mechanism for raising the portion, wherein the support portion is held by the hollow portion while being supported by the urging mechanism and can stand alone in a state where the lock of the lock mechanism is released. Baby chair. 4. The baby chair according to claim 3, wherein the lock mechanism engages with an engagement hole provided in the support portion inserted into the hollow portion when the lock mechanism moves forward, and the support mechanism uses the urging mechanism. An engaging claw that locks the ascent of the portion and separates from the engaging hole when retracted, a lever that retracts the engaging claw, and a claw bias that urges the engaging claw to move forward And a baby chair.