JPH0235551Y2 - - Google Patents

Description

[Detailed description of the invention] Field of the invention This invention is a child safety seat for automobiles that guarantees safety by keeping the body of an infant or child carried in a car in a fixed position at all times during driving. In particular, the present invention relates to a child safety seat for an automobile that is equipped with a safety guard that is placed in front of the seat and prevents an infant or child from jumping out of the seat.

Background of the Invention This type of child safety seat for an automobile is firmly fixed onto a car seat using, for example, a belt provided in the automobile. Therefore, an infant or child held securely by the safety belt and safety guard of a child safety seat in a car can be protected even when, for example, braking suddenly or driving around a sharp turn, or in a collision. Even when you wake it up, it will remain in a fixed position, which is good for safety.

However, if a collision occurs while driving, for example, an infant or child will receive a significant impact from the safety guard and safety belt. Therefore, it is desired to alleviate this impact force.

Purpose of the invention Therefore, the purpose of the invention is to provide a child safety seat for a car that can reduce the impact force applied to an infant or child when a car has a collision.

Structure and effects of the invention This invention consists of a seat for seating an infant or child, a safety guard placed in front of the seat, the left and right sides of the safety guard, and the left and right sides of the bottom of the seat. A child car vehicle comprising a left support rod and a right support rod that connect to the right side surface, and a left connecting member and a right connecting member that are respectively incorporated into a safety guard and removably attached to the left rear and right rear of the seat. It is a safety seat. The left support rod and right support rod are respectively
Its upper end is rotatably connected to the left and right sides of the safety guard, and its lower end is rotatably connected to the left and right sides of the bottom of the seat.
The left connecting member and the right connecting member are each incorporated into the safety guard so as to be slidable back and forth within a predetermined range. The child safety seat for an automobile further includes a left spring and a right spring that urge each of the left connecting member and the right connecting member and the safety guard to slide toward each other.

According to this invention, the safety guard is configured to be able to slide back and forth, and is always biased to slide rearward by the action of the left spring and the right spring. It is possible to reduce the impact force that infants or children receive when an accident occurs.

This will be explained more specifically. If a collision occurs while driving, the infant or child's body tends to fly forward from the child safety seat for an automobile due to inertia. However, forward flight is prevented by safety belts and safety guards.
That is, the infant or child's body is held firmly in place by the safety belt, but still moves forward on the seat due to inertia. This forward movement is prevented by the infant or child's body hitting the safety guard. Here, if the safety guard is fixed to the seat and cannot be moved at all,
When an infant or child's body hits the safety guard, the impact force is significant. but,
With this device, the infant or child's body can move further forward with the safety guard after hitting the safety guard, and a portion of the impact force upon collision is transferred to the left and right springs. Since the impact force is absorbed by the infant or child, the impact force is lessened.

In addition, the left connecting member and right connecting member are removably attached to the seat, and the left support rod and right support rod are rotatably connected to the bottom of the seat, so the safety guard can be moved to the lower front part. can be done. Therefore, the presence of the safety guard does not impede the loading or unloading of an infant or child into or out of the child safety seat for an automobile.

An embodiment of this invention will be described below with reference to the drawings.

DESCRIPTION OF EMBODIMENTS First, an outline of an embodiment of this invention will be explained using FIGS. 1 to 4, and then each component will be explained in detail.

An automobile child safety seat 1 shown in FIG. 1 is firmly fixed onto a car seat using, for example, a belt provided in the automobile. The seat 2 of the automobile child safety seat 1 has a seat portion 3 and a backrest portion 4.
An infant or child will sit here. A safety belt 5 is attached to the automobile child safety seat in order to firmly hold the body of an infant or child sitting on the seat. Further, as shown in the figure, a safety guard 6 is provided so as to be located in front of the seat 2. This safety guard 6 is shown in a plan view in FIG. 3, and in a side view in FIG.

With reference to FIGS. 1, 3 and 4, a description will be given of how the safety guard 6 is attached to the seat 2 of the child safety seat 1 for an automobile. Upper end portions of a left support rod 9 and a right support rod 10 are rotatably connected to the left side surface 7 and right side surface 8 of the safety guard 6, respectively. The lower ends of the left support rod 9 and the right support rod 10 are rotatably connected to the left side surface 11 and right side surface 12 of the bottom of the seat 2, respectively. Further, a left connecting member 15 and a right connecting member 16 are incorporated in the left rear portion 13 and right rear portion 14 of the safety guard 6, respectively. The left connecting member 15 and the right connecting member 16 are each provided so as to be slidable in the front and rear directions with respect to the safety guard 6. Although it does not appear in Figures 1 to 4,
The left spring 17 (the eighth
) and the right spring is placed. Therefore, normally the safety guard 6 is located at the position shown by the solid line in FIG. It moves together with the infant or child's body against the force of the spring and the right spring to the position shown in phantom lines in FIG. In this way, the impact force experienced by the infant or child is reduced.

The left connecting member 15 and the right connecting member 16 are removably attached to the left rear 18 and right rear 19 of the seat 2, respectively. The state shown in FIG. 2 is obtained by removing the left connecting member 15 and the right connecting member 16 from the seat 2, and then folding the safety guard 6 forward. Safety guard 6 is the second
If the safety guard 6 is located at the front lower part of the seat 2 as shown in the figure, the presence of the safety guard 6 will not be an obstacle when placing or removing an infant or child from the seat 2.

Each component will be specifically explained below.
Furthermore, as is clear from Figures 1 and 2,
The main part of this idea is the left side 7 of the safety guard 6.
and is provided in relation to the right side surface 8. Since the configuration provided in connection with the left side surface 7 and the configuration provided in connection with the right side surface 8 are substantially the same, only the configuration related to the left side surface 7 will be extracted and explained below. Description of the configuration related to the right side surface 8 will be omitted.

FIG. 5 shows a plan view of the left connecting member 15. In this figure, a part of the left connecting member 15 is shown in cross section, and the safety guard 6 is shown in phantom lines. As shown in the figure, from the right side surface 20 to the left side surface 2 at the rear part of the left connecting member 15,
An opening 22 extending close to 1 is formed. A lock pin 23 is arranged within this opening 22 and is slidable in the left-right direction. A head 24 is provided at one end of the lock pin 23, and this head 24 projects onto the right side surface 20 of the left connecting member 15. The other end of the lock pin 23 is connected to the left connecting member 1.
5, and a knob 25 is fixed to this protruding portion. A spring 26 is disposed between the head 24 of the locking pin 23 and the bottom of the opening 22, so that the locking pin 23 always moves to the right.
In other words, it is urged to slide toward the left side of the seat 2. Lock pin 23
The head 24 of the seat 2 fits into a lock hole 27 (see FIG. 2) formed in the left rear 18 of the seat 2, and
In this way, the left connecting member 15 is attached to the seat 2. When removing the left connecting member 15 from the seat 2, pull the knob 25 against the force of the spring 26.
All that is required is to disengage the head 24 and the lock hole 27.

Note that the configuration for removably attaching the left connecting member 15 to the left rear portion 18 of the seat 2 is not limited to that shown in FIG. 5. For example, a screw may be used instead of the locking pin 23 shown in FIG. 5, and a spring hole may be provided in the left rear portion 18 of the seat 2 to engage with the screw. In this case, the left connecting member 15 is attached or detached by rotating the screw. Therefore, compared to a structure using screws, the structure shown in FIG. 5 has the advantage that the left connecting member 15 can be easily attached and detached.

FIG. 6 shows a side sectional view of the left connecting member 15,
FIG. 7 shows a front view. Figures 5 to 7
Referring to the figure, the front portion of the left connecting member 15 is composed of a top wall 28, a left wall 29, a right wall 30, and a front wall 31. A long hole 32 extending in the front-rear direction is formed in the top wall 28. In addition, the front wall 31
A guide hole 33 is formed at the lower end of.

As is clear from FIG. 8, which shows a cross-sectional view taken along the line - in FIG. An opening 34 is formed. Inside this receiving opening 34, L
A character-shaped member 35 is fixed via a screw 36. L
The rear end portion of the letter-shaped member 35 projects upward, and the left spring 17 is disposed between this projecting portion and the front wall 31 of the left connecting member 15. Further, the safety guard 6 is provided with a pin 37 positioned within the elongated hole 32 of the left connecting member 15. In this way, the left connecting member 15 and the safety guard 6 are relatively slidable to the extent that the pin 37 can move within the elongated hole 32. By the action of the left spring 17, the safety guard 6 and the left connecting member 15 always slide toward each other, in other words, the safety guard 6
This means that it is biased to slide backward. The state shown in FIG. 8 is a state in which the pin 37 is in contact with the rear end of the elongated hole 32, that is, a state in which the safety guard 6 is located at the rearmost position. For example, when an infant or child's body collides with the safety guard 6 due to a collision while driving a car, the safety guard 6 slides forward against the force of the left spring 17, and the infant or child Alleviates the impact force applied to the

FIG. 9 shows a state in which the left connecting member 15 and the L-shaped member 35 shown in FIG. 8 are combined. The L-shaped member 35 is shaped to have an upper projection 38, and this upper projection 38 fits into a guide hole 33 formed in the front wall 31 of the left connecting member 15. As a result, when the safety guard 6 slides in the front-rear direction, movement in the left-right direction is prevented.

FIG. 10 shows a sectional view taken along line - in FIG. 4. A holder 39 is fixed to the safety guard 6, and an upper end fixing bracket 40 is fixed to the upper end of the left support rod 9. and,
The holder 39 and the upper end fixing bracket 40 are connected via a connecting pin 41 in a relatively rotatable state. This specific configuration will be explained using FIGS. 11 to 13 as well as FIG. 10.

FIG. 11 shows the shape of the holder 39 shown in FIG. 10 in detail. Holder 39
has leg portions 42 having a rectangular cross-sectional shape.
A hole 43 having a shape corresponding to the leg portion 42 is formed in the safety guard 6. Therefore, the holder 39 is fixed to the safety guard 6 with its legs 42 fitted into the holes 73. A circular through hole 44 is provided in the center of the holder 39.
is formed, and a connecting pin 41 shown in FIG. 10 is inserted into this through hole 44. As shown in FIG. 11C, the holder 39 is formed with two arcuate elongated holes 45 and 46 extending along an arc centered on the through hole 44. As shown in FIG.

FIG. 12 shows the upper securing bracket 40 shown in FIG. 10 in greater detail. A through hole 47 is formed in the center of the upper end fixing bracket 40, and a connecting pin 41 shown in FIG. 10 is inserted into the through hole 47. The upper end fixing bracket 40 has a receiving recess 48 having a square cross-section, into which the upper end of the left support rod 9 having a square cross-section is fitted. Further, the upper end fixing bracket 40 is provided with protrusions 49 and 50 that are positioned within the arcuate long holes 45 and 46 of the holder 39 described above. In this embodiment, the protrusions 49 and 50 have an arcuate shape extending along an arc centered on the through hole 47. The arcuate lengths of the protrusions 49 and 50 are made shorter than the arcuate long holes 45 and 46 of the holder 39.

The positional relationship between the arcuate long holes 45, 46 of the holder 39 and the protrusions 49, 50 of the upper end fixing bracket 40 is clear from FIG. In addition, in FIG. 13, the projections 49 and 50 of the upper end fixing bracket 40 are
is shown in cross section, and the safety guard 6 and left support rod 9 are shown in imaginary lines. As shown in the figure, the left support rod 9 has protrusions 49 and 50 formed in an arcuate long hole 45,
It can be rotated relative to the safety guard 6 within the range within which it can move. The state shown in FIG. 13A is a normal use state, and the state shown in FIG. 13B is a state when the safety guard 6 slides forward. By limiting the rotatable range of the left support rod 9 as described above, the following advantages can be obtained.

The first advantage is that the elongated hole 32 shown in FIG.
Also, the load on the pin 37 can be reduced. That is, the end of the forward slide of the safety guard 6 is defined by the pin 37 coming into contact with the front end of the elongated hole 32. Here, if the left support rod 9 and the safety guard 6 can rotate freely, the load to prevent the safety guard 6 from sliding forward is applied to the elongated hole 3.
2 and the pin 37. Therefore, if the range in which the pin 37 can move within the elongated hole 32 and the range in which the protrusions 49 and 50 of the upper end fixing bracket 40 can move within the arcuate elongated holes 45 and 46 of the holder 39 can be matched, the safety guard The load to prevent the forward slide of 6 will be distributed to two locations.

The second advantage is achieved when the safety guard 6 is moved to the lower front position as shown in FIG. That is, when the car child safety seat 1 is placed in the state shown in FIG. 2 while the car is running, if the safety guard 6 can rotate freely, the safety guard 6 will move in response to the shaking of the car. It will also sway. This is not desirable from a safety standpoint, and may even damage the car seat. Such drawbacks can be eliminated by limiting the rotation range of the safety guard 6. Furthermore, by limiting the rotation range of the safety guard 6, the operation of moving the safety guard 6 from the state shown in FIG. 2 to the state shown in FIG.
Moreover, the operation when attaching the right connecting member 16 to the seat 2 becomes easy.

Referring again to Figure 10, the left side of the bottom of the seat 1
1 is provided with a brake member 51 that is slidable in the left-right direction. A lower end fixing bracket 52 and a mounting bracket 53 are fixed to the lower end of the left support rod 9. The brake member 51, a lower end fixing bracket 52 and a mounting bracket 53 fixed to the left support rod 9 are connected via a connecting pin 54 so as to be able to rotate relative to each other. This specific configuration will be explained using FIGS. 14 to 19 as well as FIG. 10.

14-16 show the lower end securing bracket 52, and FIG. 17 shows the mounting bracket 5.
3 is shown. The lower end fixing bracket 52 and the mounting bracket 53 have through holes 55 and 56 in their centers, respectively. A connecting pin 54 shown in FIG. 10 is inserted through the through holes 55 and 56. Furthermore, on the surfaces where the lower end fixing bracket 52 and the mounting bracket 53 face each other,
Receiving recesses 57, 5 each having a square cross-sectional shape
8 is formed. The lower end of the left support rod 9, which has a square cross-sectional shape, is positioned within the receiving recesses 57, 58. Furthermore, referring to FIG. 10, there is a cover 59 on the side surface of the mounting bracket 53.
is installed.

As is clear from FIGS. 14 and 15,
The lower end fixing bracket 52 has a circular recess 60 formed on the side surface facing the brake member 51. A plurality of engagement recesses 61 are formed on the bottom surface of the circular recess 60 along a circle centered on the through hole 55 . Each engagement recess 61 has a tapered shape whose width decreases as it becomes deeper.

18 and 19, the brake member 5
1 is shown. The brake member 51 has two engaging protrusions 62 on the side surface facing the lower end fixing bracket 52, which can engage with the respective engaging recesses 61 described above. Each engagement protrusion 62 has a tapered shape whose width becomes narrower as it becomes higher. Further, a through hole 63 is formed in the center of the brake member 51,
The connecting pin 54 is inserted through the through hole 63.

Now, let's take a look at the shape of the brake member 51.
The brake member 51 has a substantially cylindrical shape, but has two arcuate notches 64 on its outer peripheral surface. Left side 11 of the seat bottom shown in FIG.
A receiving hole 65 is formed in which the brake member 51 is slidably received. The receiving hole 65 has a shape corresponding to the portion of the brake member 51 in which the two arcuate notches 64 described above are formed, and supports that portion in a slidable manner. Therefore, even if a rotational force is applied to the brake member 51, the brake member 51 will not rotate relative to the left side surface 11 of the seat bottom.

Referring to FIG. 19, the brake member 51 includes:
A storage opening 66 is formed extending from the side located within the seat 2 to near the side facing the lower end anchoring bracket 52. A spring 67 is housed within this housing opening 66, as shown in FIG. One end of the spring 67 is in contact with the bottom surface of the storage opening 66, and the other end is in contact with a head 68 formed at one end of the connecting pin 54. Note that a head 69 is also formed at the other end of the connecting pin 54.
9 is in contact with the side surface of the mounting bracket 53.
Therefore, the brake member 51 is always urged by the spring 67 to slide in one direction, that is, to the right in FIG. This direction is also the direction in which the engagement protrusion 62 of the brake member 51 and the engagement recess 61 of the lower end fixing bracket 52 engage.

In this way, the brake member 51 applies a braking force to the rotation of the left support rod 9. That is, by positioning the engagement protrusion 62 within the engagement recess 61, a force for preventing rotation of the left support rod 9 is exerted. This blocking force increases as the strength of the spring 67 increases. For example, when a predetermined rotational force is applied to the left support rod 9 as the safety guard 6 slides due to a collision, the brake member 51 slides against the force of the spring 67. As a result, the engaging protrusion 6
2 is disengaged from the engagement recess 61, allowing the left support rod 9 to rotate.

Note that the shapes of the engagement protrusion 62 and the engagement recess 61 are selected so as to achieve the above-mentioned sliding operation. For example, as described above, the engagement protrusion 62 and the engagement recess 61 each have a tapered shape.

As described above, by adopting a configuration that applies a braking force to the rotation of the left support rod 9, the following advantages can be obtained. That is, if such a configuration were not provided, the left spring 17 (and the right spring) shown in FIG. 8 would have to receive a large impact force by itself. For this purpose, a fairly strong spring is required. However, if the configuration is such that a braking force is applied to the rotation of the left support rod 9, a large amount of impact force will be absorbed at two locations, and the range of springs to be selected will be wide. becomes.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of this invention. FIG. 2 is a perspective view showing the state after the safety guard 6 has been moved to the front lower part from the state shown in FIG. 1. FIG. 3 is a plan view showing left and right portions of the safety guard 6 shown in FIG. 1. FIG. 4 is a diagram of the configuration related to the safety guard 6 shown in FIG. 1, viewed from the left side. FIG. 5 is a plan view showing the left connecting member 15 shown in FIG. 1, and a portion thereof is shown in cross section. FIG. 6 is a side sectional view of the left connecting member 15. FIG. 7 is a front view of the left connecting member 15. FIG. 8 is a sectional view taken along line - in FIG. 3. FIG. 9 is a front view of the combination of the left connecting member 15 and the L-shaped member 35 shown in FIG. 8. FIG. 10 is a sectional view taken along line - in FIG. 4. 11th A
The figure is a front view of the holder 39 shown in FIG. 10. FIG. 11B is a left side view of the holder 39. FIG. 11C is a right side view of the holder 39. FIG. 11D is a cross-sectional view taken along line XI-XI of FIG. 11C. FIG. 12A is a right side view of the upper securing bracket 40 shown in FIG. 10. Figure 12B is the line XII-XII in Figure 12A.
It is a front sectional view seen along. Figure 12C shows
FIG. 4 is a left side view of the upper end fixing bracket 40; 1st
FIG. 3A is a side view showing a state in which the projections 49 and 50 of the upper end fixing bracket 40 are located in the arcuate long holes 45 and 46 of the holder 39. FIG. 13B shows the state after the left support rod 9 has been rotated counterclockwise from the state shown in FIG. 13A. FIG. 14 is a perspective view of the lower end securing bracket 52 shown in FIG. 10. FIG. 15 is a view cut at the center of the lower end fixing bracket 52 shown in FIG. 14. FIG. 16 is a left side view of the lower end fixing bracket 52 shown in FIG. 14. FIG. 17A is a side view of the mounting bracket 53 shown in FIG. 10. FIG. 17B is a front sectional view of the mounting bracket 53. FIG. 17C is a right side view of the mounting bracket 53. FIG. 18 is a perspective view of the brake member 51 shown in FIG. 10. FIG. 19 is a diagram cut at the center of the brake member shown in FIG. 18. In the figure, 1 is a car child safety seat; 2 is a child safety seat for a car;
is the seat, 6 is the safety guard, 7 is the left side of the safety guard, 8 is the right side of the safety guard, 9 is the left support bar, 10 is the right support bar, 11 is the left side of the bottom of the seat, 12 is the seat Right side of the bottom, 15 is a left connecting member, 15 is a right connecting member, 17 is a left spring,
18 is the left rear of the seat, 19 is the right rear of the seat, 32
is a long hole, 37 is a pin, 45 and 46 are arc-shaped long holes,
49 and 50 are projections, 51 is a brake member, 61 is an engagement recess, 62 is an engagement projection, and 67 is a spring.

Claims (1)

[Claims for Utility Model Registration] (1) A seat for an infant or child to sit on, a safety guard disposed in front of the seat, and upper ends of which are located on the left and right sides of the safety guard, respectively. a left support rod and a right support rod that are rotatably connected and whose lower ends are rotatably connected to the left and right side surfaces of the bottom of the seat, each sliding back and forth within a predetermined range on the safety guard; a left connecting member and a right connecting member that are removably attached to the left and right rear portions of the seat; and a left connecting member and a right connecting member that are respectively connected to each other and the safety guard; A child safety seat for an automobile, comprising: a left spring and a right spring biased to slide in an approaching direction; (2) Each of the left connecting member and the right connecting member is formed with a long hole extending back and forth, and the safety guard is provided with a pin positioned in each of the long holes, The automobile according to claim 1, wherein the left connecting member, the right connecting member, and the safety guard are relatively slidable within a range in which the pin can move within the elongated hole. Child safety seat. (3) At the connection portion between the left and right side surfaces of the safety guard and the left support rod and the right support rod, the left and right side surfaces of the safety guard each have a circular arc centered on a rotation fulcrum. An arcuate long hole is formed extending along the left support rod and the right support rod, respectively.
A protrusion is provided that is positioned within each of the arcuate long holes, and each of the left support rod and right support rod is attached to the safety guard to the extent that the protrusion can move within the arcuate elongate hole. A child safety seat for an automobile according to claim 1 or 2, which is rotatable relative to the vehicle. (4) At the connection portion between the left side and right side of the bottom of the seat and the left support rod and the right support rod, the left support rod and the right support rod respectively include:
A plurality of engagement recesses are formed along a circle centered on a rotation fulcrum, and the left side and right side of the bottom of the seat each have an engagement protrusion capable of engaging with the engagement recess. and a brake member that is slidable left and right; the brake member is urged by a spring to slide in a direction that causes the engagement protrusion to engage with the engagement recess; and the engagement protrusion and the engagement recess is configured such that the brake member slides against the force of the spring when a rotational force of a predetermined level or more is applied to the left support rod and the right support rod. The automobile according to any one of claims 1 to 3, wherein the shape of the engagement protrusion is selected so that the engagement protrusion and the engagement recess are disengaged. Child safety seat.