JPH0514925Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to childcare equipment with a seat, such as baby carriages and Haiti Air, and particularly relates to a locking mechanism for a seat belt that includes a torso belt and a crotch belt.

[Conventional technology] In childcare equipment with seats such as baby carriages and Haiti Air, in order to ensure the safety of the child sitting in the seat,
Seat belts are compulsory. 9th
The figure is a perspective view showing a baby carriage that has been conventionally provided on the market. The illustrated baby carriage seat is composed of a seat part 1 and a backrest part 2. This seat is equipped with a seat belt 3.

As shown in the figure, the seat belt 3 includes a first torso belt 4 extending along one side of the child sitting in the seat, a second torso belt 5 extending along the other side of the child, and a second torso belt 5 extending along the other side of the child. extend between the child's legs,
A crotch belt 6 whose base part is fixedly attached to the seat part 1 of the seat is provided. A loop 6a is formed in the upper part of the crotch belt 6. One torso belt 4 has a relatively long length compared to the other torso belt 5. The long torso belt 4 is then passed through the loop 6a of the crotch belt 6. A receiver 7 is attached to the tip of the body belt 4, and an insert 8 is attached to the tip of the other body belt 5. The insert 8 is inserted into the receiver 7 and locked in that position.

When removing a child from the seat of a baby carriage, the following operations are performed. First, the receiver 7 and the insert 8
Release the lock status. In this state, one of the torso belts 4 is still passed through the loop 6a of the crotch belt 6, making it difficult to remove the child from the seat. Therefore, after releasing the lock between the receiver 7 and the insert 8, it is necessary to pull out one of the torso belts 4 from the loop 6a of the crotch belt 6. When such an operation is performed, the first torso belt 4, the second torso belt 5, and the crotch belt 6 are separated from each other, so that the child can be easily removed from the seat.

Next, when placing the child in the seat and fastening the seat belt 3, the following operations are performed. First, attach the first torso belt 4 to the loop 6a of the crotch belt 6.
Pass it inside. Then, insert the insert 8 into the receiver 7.
By inserting, the first trunk belt 4 and the second trunk belt 5 are connected.

[Problems to be solved by the invention] As mentioned above, when placing a child in the seat and fastening the seat belt 3, or when removing the child from the seat, operations related to the receiver 7 and the insert 8 are necessary. In addition, it is necessary to pass the torso belt 4 through the loop 6a of the crotch belt 6, or to pull out the torso belt 4 from the loop 6a. Such operations are relatively cumbersome and cannot be performed with only one hand.

Therefore, the object of this invention is to provide a locking mechanism for a seatbelt of a childcare appliance with a seat, which allows the seatbelt to be attached and detached with a simple operation.

More preferably, it is an object to provide a seatbelt locking mechanism that can perform desired operations with a small number of parts in consideration of manufacturing costs.

[Means for Solving the Problems] This invention consists of a first torso belt and a second torso belt that extend along both sides of the child sitting in the seat and are installed so as to wrap around the child's abdomen. , a crotch belt extending between the legs of a child seated in a seat, the base of which is fixedly attached to the seat of the seat;
To provide a locking mechanism for seat belts of a child care appliance with a seat, which connects each other and locks them so that they do not come off, and includes the following.

a. A first insertion member attached to the tip of the first trunk belt.

b. A second insertion member attached to the tip of the second trunk belt.

c attached to the tip of the crotch belt, and having openings on both sides thereof into which the first insertion member and the second insertion member are inserted;
A case with an opening window in the center.

d a central portion disposed within the case and rotatably attached to the case via a shaft, one end portion capable of engaging with the first insert member, and the other end portion exposed from the opening window of the case. and engages with the inserted first insert member when in the first position to prevent its removal;
a first lever that disengages the first insert member when in a second position;

e a central part arranged in the case and rotatably attached to the case via a shaft, one end part capable of engaging the second insert member, and the other end part of the first lever from below; the other end is in contact with the second insert member, and when in the first position, engages with the inserted second insert member to prevent its removal; and when in the second position, engages with the second insert member. A second lever that releases the locked state.

f. A spring disposed within the case and biasing the first and second levers to respective first positions by pushing up the other end of the second lever from below.

[Operations and Effects of the Invention] When removing a child from the seat of a child care appliance with a seat, the following operations are performed. The first lever is brought to the second position by pushing the other end of the first lever exposed through the opening window of the case. Since the other end of the second lever is located below the other end of the first lever, the other end of the second lever is pushed by the other end of the first lever, and as a result, the other end of the second lever is pushed by the other end of the first lever. 2 lever is brought to the second position. Then, the engagement between the first and second levers and the first insert member and the second insert member is released, so that the first torso belt, the second torso belt, and the crotch belt can be separated from each other. . Therefore, the child can be easily removed from the seat.
In this way, with this invention, the first torso belt, the second torso belt, and the crotch belt can be separated from each other with a simple operation. In other words, it is necessary to pull out the torso belt from the loop of the crotch belt, as is the case with conventional seat belts.

Next, when fastening the seat belt to a child sitting in the seat, the first insertion member and the second
It is only necessary to insert each insert into the opening of the case. Then, the first and second levers engage the first insert member and the second insert member to lock the first torso belt, the second torso belt, and the crotch belt, respectively, so that they do not come off. This locked state is firmly maintained by a spring. in this way,
When putting on the seat belt, there is no need to pass the torso belt through the loop of the crotch belt.

Furthermore, in the present invention, the other end of the first lever and the other end of the second lever overlap, and this overlapping part is pushed up from below by one spring to maintain the locked state. There is. Moreover, since the locking state is released by pushing in the other end of the first lever exposed through the opening window of the case, the locking mechanism can be configured with a small number of parts.

As described above, according to this invention, it is possible to put on or take off the seat belt with very simple operations. Furthermore, it is possible to construct a lock mechanism that can perform desired operations with a small number of parts.

[Embodiment] FIG. 3 shows a seat belt 10 in which an embodiment of this invention is adopted. The seat of the childcare equipment is composed of a seat part 11 and a backrest part 12,
This seat is equipped with a seat belt 10.
The seat belt 10 includes a first torso belt 13 extending along one side of the child sitting in the seat, a second torso belt 14 extending along the other side, and between the child's legs. For example, the crotch belt 15 is fixedly attached to the seat portion 11 via a pin 16. When the child is seated on the seat, the first torso belt 13, second torso belt 14 and crotch belt 15 are firmly connected to each other to prevent the child from slipping off the seat.

In FIG. 1 and FIG. 2, the first trunk belt 13,
A connecting portion between the second torso belt 14 and the crotch belt 15 is shown in an enlarged scale. Specifically, FIG. 1 is a sectional view of a main part of an embodiment of this invention,
FIG. 2 is a front view thereof. 1 is also a sectional view taken along the line - in FIG. 2. Note that illustration of each belt is omitted in FIGS. 1 and 2.

A first insertion member 17 is attached to the tip of the first trunk belt 13 . Further, a second insertion member 18 is attached to the tip of the second trunk belt 14. Further, a case 19 is attached to the tip of the crotch belt 15.

As shown in detail in FIGS. 1 and 2, the first
The insert member 17 has three slits 20, 2.
1 and 22 are formed. First trunk belt 13
As shown by the imaginary line in Figure 1, first,
After passing through the rightmost slit 20 from bottom to top, and passing through the leftmost slit 22 from top to bottom, the slit 21 located in the center is passed through.
from bottom to top, and finally passes through the rightmost slit 20 from top to bottom. The first trunk belt 13 has the above three slits 20, 2
By suitably adjusting the portions passing through 1 and 22, the overall length can be adjusted. Similarly, the second insert member 18 is also formed with three slits 23, 24, 25 through which the second trunk belt 14 can pass. Therefore, the second trunk belt 14 also
Its length is adjustable.

Referring to FIG. 2, a connecting member 30 is fixedly attached to the case 19. Three slits 31, 32, and 33 are formed in this connecting member 30. The crotch belt 15 is guided to pass through these three slits 31, 32, and 33. Its aspect is similar to that of the first trunk belt 13. Therefore, the entire length of the crotch belt 15 is also adjustable.

Referring to FIG. 1, an engagement slit 28 is formed at the tip of the first insertion member 17, and an engagement slit 29 is also formed at the tip of the second insertion member 18. Further, the case 19 connected to the crotch belt 15 has openings 26 and 27 on both sides thereof, into which the first insertion member 17 and the second insertion member 18 are inserted.

Furthermore, as shown in the figure, inside the case 19,
Two levers, a first lever 34 and a second lever 37, are housed. First lever 34
is rotatably attached to the case 19 via a shaft 35. The first lever 34 has an engaging convex portion 34a that can be engaged with the engaging slit 28 of the first insertion member 17, and further has an operating portion 34b exposed from the window 36 of the case 19. . The second lever 37 is rotatably attached to the case 19 via a shaft 38. This second lever 37
has an engaging convex portion 37a that can be engaged with the engaging slit 29 of the second insertion member 18, and further has a force transmitting portion 37b that projects upward and downward. The upper end of the force transmitting portion 37b is always connected to the first lever 3.
It is in contact with 4. Furthermore, a leaf spring 39 is arranged below the force transmitting portion 37b of the second lever 37. This leaf spring 39 is always in contact with the lower end of the force transmitting portion 37b of the second lever 37, and always urges the force transmitting portion 37b to move upward. Therefore, the second lever 37 is always urged to rotate counterclockwise in FIG. 1 by the urging force of the leaf spring 39. on the other hand,
The first lever 34, which is pushed from below by the force transmitting portion 37b of the second lever 37, is always urged to rotate clockwise in FIG.

FIG. 4 is a diagram showing how the leaf spring 39 is attached. Although the case 19 is not shown in FIG. 4, there are four guide pins 4 arranged on the case 19 along both sides of the leaf spring 39.
0, 41, 42, and 43 are erected. Therefore, the leaf spring 39 has four guide pins 40, 4
1, 42, and 43, and expands and contracts in its length direction. In FIG. 4, the stretched state is shown with imaginary lines. Furthermore, referring to FIG. 1, the leaf spring 39
has a mountain-like shape at its center, and if you push this mountain downward, the entire length will increase. Further, as shown in the figure, both the rotation shaft 35 portion of the first lever 34 and the rotation shaft 38 portion of the second lever 37 are adjacent to the slope portion of the leaf spring 39. Therefore, the presence of the first lever 34 and the second lever 37 prevents the leaf spring 39 from moving in its length direction from the state shown in FIG.

1 to 3 show a state in which the first torso belt 13, the second torso belt 14, and the crotch belt 15 are connected to each other. In that state,
The engaging convex portion 34a of the first lever 34 engages with the engaging slit 28 of the first insert member 17, thereby preventing the first insert member 17 from coming off from the case 19. Further, the engagement protrusion 37a of the second lever 37 engages with the engagement slit 29 of the second insertion member 18, thereby causing the second insertion member 18 to engage with the engagement slit 29 of the second insertion member 18.
is prohibited from leaving Case 19. The state shown in FIG. 1 is firmly maintained by the biasing force of the leaf spring 39.

Next, when attempting to remove the seatbelt, the user may push in the operating portion 34b exposed through the window 36 of the case 19. The situation is shown in FIG. By pushing in the operating portion 34b, the first lever 34 rotates counterclockwise in the figure. As a result, the engagement between the engagement protrusion 34a of the first lever 34 and the engagement slit 28 of the first insertion member 17 is released. Therefore, if the first insertion member 17 is pulled to the right in FIG. 5, it will be separated from the case 19.

The rotation of the first lever 34 is transmitted to the second lever 37 via the force transmitting section 37b. That is, the second lever 37 rotates clockwise in the figure,
As a result, the engagement between the engagement convex portion 37a and the engagement slit 29 of the second insertion member 18 is released. Therefore, if the second insertion member 18 is pulled leftward from the state shown in FIG. 5, it will be separated from the case 19. Note that as the second lever 37 rotates, the leaf spring 39 is expanded in its length direction.

As described above, by simply pushing in the operation part 34b exposed from the case 19, the first torso belt 13, the second torso belt 14, and the crotch belt 15
can be separated from each other. This operation is very simple. In other words, there is no need for an operation such as pulling out the torso belt from the loop of the crotch belt, which is required with conventional seat belts. Note that the first insertion member 1 is removed from the state shown in FIG.
7 and the second insertion member 18 from the case 19, the first lever 34 and the second insertion member 18 are separated from the case 19.
Both levers 37 return to the state shown in FIG. 1 by the biasing force of the leaf spring 39.

Preferably, the tip of the first insertion member 17 and the tip of the second insertion member 18, or the engagement protrusion 34a of the first lever 34 and the engagement protrusion 37a of the second lever 37 are Member 17
The second insert member 18 is formed in such a shape that the engaged state shown in FIG. 1 can be obtained by simply inserting the second insert member 18 through the openings 26 and 27 of the case 19. In the embodiment shown in FIG. 1, the tip of the first insertion member 17 has a tapered slope shape,
The tip end of the second insertion member 18 also has a tapered slope shape. Furthermore, the engagement convex portion 34a of the first lever 34 and the engagement convex portion 37a of the second lever 37 also have a tapered slope shape.
Therefore, for example, when the first insertion member 17 is inserted through the opening 26 of the case 19, the tip of the first insertion member 17 and the engagement protrusion 34a of the first lever 34 first come into contact. If the first insertion member 17 is further pushed in in this state, the first lever 3
4 rotates against the force of the leaf spring 39. When the engagement slit 28 of the first insertion member 17 is positioned directly below the engagement convex portion 34a of the first lever 34, the first lever 34 is brought into the state shown in FIG. 1 by the force of the leaf spring 39. The state of engagement between the engagement convex portion 34a and the engagement slit 28 is established. Second
A similar operation is performed for the insert member 18.

As described above, the operation of putting on the seat belt is very easy. In other words,
Unlike the seat belt shown in FIG. 9, there is no need to pass the torso belt through the loop of the crotch belt.

In the conventional seat belt 3 shown in FIG. 9, the length of the crotch belt 6 cannot be adjusted. This crotch belt 6 also serves to determine the height of the front portions of the torso belts 4 and 5. Therefore, depending on the size of the child sitting in the seat,
The mounting positions of the torso belts 4 and 5 were sometimes too high, or conversely too low.

A preferred embodiment of the invention also overcomes these problems. This will be explained using FIGS. 6 and 7. Crotch belt 15
are guided to pass through three slits 31, 32, and 33 formed in the connecting member 30 of the case 19. Therefore, slit 31,3
2 and 33, the overall length of the crotch belt 15 can be changed as appropriate.
The state shown in FIG. 6 is a state in which the length of the crotch belt 15 is relatively short, and the state shown in FIG. 7 is a state in which the length of the crotch belt 15 is relatively long. When the length of the crotch belt 15 is short, the front portions of the torso belts 13 and 14 are located relatively lower,
On the other hand, when the length of the crotch belt 15 is long, the front portions of the torso belts 13 and 14 are located relatively upward. Therefore, when the child's body is small,
As shown in FIG. 6, the length of the crotch belt 15 is shortened. On the other hand, as the child's body grows larger,
As shown in FIG. 7, the length of the crotch belt 15 is increased. Since the length of the crotch belt 15 is adjustable in this way, it is possible to adjust the position of the seat belt so that it is located at an optimal position relative to the child's body.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a main part of an embodiment of this invention. FIG. 2 is a front view of one embodiment of this invention. FIG. 3 is a schematic perspective view showing an embodiment of this invention installed on a seat. FIG. 4 shows the leaf spring 39 shown in FIG.
It is a figure which shows the attachment aspect of. FIG. 5 is a diagram showing a state after both the first lever 34 and the second lever 37 have rotated from the state shown in FIG.
FIG. 6 is an illustrative side view of the state in which the crotch belt 15 and torso belt 13 are connected. FIG. 7 is an illustrative view showing a state after the length of the crotch belt 15 has been lengthened from the state shown in FIG. 6. Figure 8 shows
1 is a perspective view showing a baby carriage equipped with a conventional seat belt locking mechanism. In the figure, 10 is a seat belt, 13 is a first
A torso belt, 14 is a second torso belt, 15 is a crotch belt, 17 is a first insertion member, 18 is a second insertion member, 19 is a case, 34 is a first lever, 37 is a second lever, 39 is a leaf spring show.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A first torso belt and a second torso belt that extend along both flanks of a child sitting in a seat and are installed so as to wrap around the child's abdomen; A seat belt for a childcare appliance with a seat that connects a crotch belt that extends between the legs of a seated child and whose base is fixedly attached to the seat of the seat to prevent them from coming off. The locking mechanism includes: a first insertion member attached to the tip of the first body belt; a second insertion member attached to the tip of the second body belt; and a lock mechanism of the crotch belt. It is attached to the tip and has openings on both sides thereof into which the first insertion member and the second insertion member are inserted,
a case having an opening window in its central part; a central part disposed within the case and rotatably attached to the case via a shaft; and one end capable of engaging with the first insertion member. , and has the other end exposed from the opening window of the case, and when in the first position, engages with the inserted first insert member and prevents its removal;
a first lever disengaged from the first insert member when in a second position; a central portion disposed within the case and rotatably attached to the case via a shaft; one end that can engage with the second insert member, and the other end that abuts the other end of the first lever from below, and engages with the inserted second insert member when in the first position. a second lever disposed within the case and configured to prevent the other end of the second lever from being disengaged when the second lever is in the second position; A locking mechanism for a seat belt of a child-care appliance with a seat, comprising: a spring that biases the first and second levers to each bring the first lever to a first position by pushing up from below. (2) The locking mechanism for a seat belt of a child care appliance with a seat according to claim 1 of the utility model registration claim, wherein the spring is a leaf spring. (3) The locking mechanism for a seat belt of a child care appliance with a seat according to claim 1 or 2 of the registered utility model claim, wherein the crotch belt is attached to the case so that its length can be adjusted.