JPH0995240A - Protection frame for babby buggy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a sure attachment/detachment of a protection frame for a babby buggy. SOLUTION: On at least one of right and left armrests 30 a hole 40 for attaching a protection frame 10 is formed, and a connector 60 for connecting the protection frame 10 to the armrest 30 through the mounting hole 40 is provided. The connector 60 is equipped with a lock member 70 locking the connector 60 under the fitted state in the hole 40, a lock release member 80 releasing locking made by the lock member 70, and a lock release preventing member 90 preventing normally the rock release operation of the lock release member 80.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stroller protection frame, and more particularly to a stroller that can be reliably attached and detached.

[0002]

2. Description of the Related Art As a protective frame of this type, at least one of the left and right armrests is provided with a mounting hole for mounting the protective frame, and the protective frame can be detachably connected to the mounting hole of the armrest. A connecting device is provided (for example, Japanese Utility Model Laid-Open No. 54-178361, Japanese Utility Model Laid-Open No. 1-68978).
Japanese Utility Model Publication, Japanese Utility Model Publication No. 5-34472, Japanese Utility Model Publication No. 7-22
883 publication).

The above-described conventional coupling device includes a lock member that locks the coupling device in a state of being coupled to the mounting hole, and a lock release member that releases the locked state by the locking member.

[0004]

However, the above-mentioned conventional connecting device has a problem that the protective frame comes off when the lock releasing member is inadvertently operated. Therefore, the invention according to claim 1 is made in view of the problems of the above-described conventional technique, and an object of the invention is to provide a protective frame for a stroller in which the connecting device can be reliably attached and detached. To provide.

[0005] The second aspect of the present invention is the first aspect of the present invention.
In addition to the objects of the described invention, the following objects are intended. That is, according to the second aspect of the invention, the infant can be raised and lowered by removing only one of the left and right connecting devices. The invention described in claim 3 has the following object in addition to the object of the invention described in claim 2.

That is, the invention according to claim 3 restricts the rotation angle of the connecting device so that the protective frame does not rotate more than necessary. The invention according to claim 4 has the following objects in addition to the objects of the inventions according to claims 1 to 3 described above. That is, the invention according to claim 4 is
The armrest can be bent when the stroller is folded.

[0007]

[Means for Solving the Problems]

(Features) The present invention is to achieve the above-mentioned object, and its contents will be described below using embodiments shown in the drawings. The invention according to claim 1 is characterized by the following points.

That is, the connecting device (60) is, for example, as shown in FIG.
As shown in FIG. 5, a lock release preventing member (90) is provided which always prevents the lock releasing operation by the lock releasing member (80). The invention described in claim 2 is characterized by the following three points in addition to the characteristic points of the invention described in claim 1.

First, the left and right armrests (30) are provided with mounting holes (40) for mounting a protective frame, as shown in FIG. 1, for example. Secondly, as shown in FIG. 1, for example, a pair of left and right connecting devices (60) that can be detachably connected to the respective mounting holes (40) of the armrest (30) are provided at both ends of the protective frame (10). Each is provided.

Thirdly, the left and right connecting devices (60) are formed so as to be rotatable with respect to the respective mounting holes (40) as shown in FIGS. The invention described in claim 3 is characterized by the following points in addition to the characteristic points of the invention described in claim 2. That is, for example, as shown in FIG. 4, each attachment hole (40) is provided with a rotation angle regulation part (190) that regulates the rotation angle of the coupling device (60).

The invention according to claim 4 is the above-described claim 1.
In addition to the features of the invention described in 3 to 3, the following features are provided. That is, a bendable flexible portion (50) is provided in the middle of the length of the protective frame (10), for example, as shown in FIG. (Operation) Next, the operation of each invention described in each claim having the above configuration will be described below.

According to the first aspect of the invention, the following operation is achieved. That is, to mount the protective frame (10),
The connecting device (60) may be attached to the mounting hole (40) of the armrest (30). When the connecting device (60) is mounted, the connecting device (60) is locked in the mounting hole (40) by the lock member (70).

On the other hand, in order to remove the protection frame (10), after operating the lock release preventing member (90), the lock release member (80)
By operating, the connecting device (60) may be removed from the mounting hole (40). Even if the lock release member (80) is simply operated without operating the lock release prevention member (90), the locked state of the lock member (70) is maintained, and the coupling device (60) is attached to the mounting hole (40). ) It doesn't come off.

According to the invention described in claim 2, in addition to the operation of the invention described in claim 1, the following operation is exhibited.
That is, first, follow the steps above to set the left and right armrests (3
0) One of the left and right connecting devices of the protective frame (10) connected to one
Remove (60). After that, the other coupling device (60) that remains is rotated with respect to the mounting hole (40) of the armrest (30) being coupled.

As a result, the infant can be raised and lowered. According to the invention described in claim 3, in addition to the operation of the invention described in claim 2, the following operation is exhibited. That is, the protective frame (10) can rotate about the mounting hole (40), but its rotation angle is restricted within a certain range.

Therefore, the protective frame (10) does not rotate more than necessary. It is also possible to prevent the protective frame (10) from rotating more than necessary and colliding with an infant or an operator. In the invention described in claim 4, in addition to the operation of the invention described in claims 1 to 3, the following operation is achieved. That is, when the stroller (20) is folded in the width direction, the protective frame (10) can be bent from the flexible portion (50).

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIGS. 1 to 11 show a first embodiment of the present invention. 1 is an exploded perspective view of a stroller protection frame, FIG. 2 is a perspective view of a stroller with a protection frame attached, FIG. 3 is an exploded perspective view of a protection frame coupling device, and FIG. 4 is an armrest mounting hole. 5 is a perspective view showing a rotating state of the protective frame, FIGS. 6 to 11 are various sectional views showing a procedure for attaching the protective frame, and FIG. 6 is a vertical sectional view showing a state in which the protective frame is removed. FIG. 7, FIG. 7 is a horizontal cross-sectional view corresponding to FIG. 6, FIG. 8 is a vertical cross-sectional view showing the mounting state of the protective frame, FIG. 9 is a horizontal cross-sectional view corresponding to FIG. 8, and FIG. FIG. 11 is a longitudinal sectional view showing a state, and FIG. 11 is a lateral sectional view corresponding to FIG. (Protective Frame) In FIGS. 1 and 2, reference numeral 10 indicates a protective frame 10, and this protective frame 10 is, as shown in FIG.
Is a device for removably attaching to attachment holes 40, 40 provided at the front ends of the left and right armrests 30, 30 to prevent a seated infant from falling from the seat.

As shown in FIG. 1, the protective frame 10 is provided with a pair of left and right connecting devices 60, 60 that are detachably attached to the mounting holes 40 of the armrest 30 at both left and right ends of the flexible portion 50. . As shown in FIG. 3, each of the coupling devices 60 includes a lock member 70 that locks the coupling device 60 in a state where the coupling device 60 is coupled to the mounting hole 40, a lock release member 80 that unlocks the lock by the lock member 70, and a lock member. The lock release preventing member 90 is provided for always preventing the lock releasing operation by the release member 80.

As shown in FIG. 1, in the flexible portion 50, the outer periphery of the leaf spring 51 is covered with a soft resin core material 52, and the outer periphery of the core material 52 is further covered with a soft resin cover member 53. Is coated with. Therefore, the protective frame 10 includes the flexible portion 50.
In addition to being bendable, it is possible to restore the original shape by removing the bending force.

Further, at both ends of the flexible portion 50, mounting small holes 54 for mounting the flexible portion 50 to the coupling device 60, respectively,
A mounting groove 55 is provided. (Protective Frame Connecting Device) Next, a pair of left and right connecting devices 60 of the protective frame 10 will be described with reference to FIGS.

As shown in FIG. 3, each coupling device 60 is provided with a lock member 70, a lock release member 80, and a lock release blocking member 90 in a case 100 that can be divided into front and rear.
As shown in FIG. 1, the case 100 has a flexible portion 50 on one side.
It is a hollow member having an insertion opening 101 for insertion of a case, and can be divided into a box-shaped case main body 102 having an open front surface and a cover 103 which is attached to the case main body 102 and closes the front open surface. is there.

As shown in FIG. 3, the case main body 102 is provided with the armrest 3 on the side opposite to the insertion opening 101 of the flexible portion 50.
An insertion cylinder portion 110 to be inserted into the zero mounting hole 40 is provided so as to project.
Further, inside the case body 102, a plurality of engaging boss portions 120 ... For engaging the cover 103, and a mounting boss portion 130 for mounting the flexible portion 50 are provided. The insertion tube portion 110 provided on the case body 102 is a member for inserting the lock member 70 into the mounting hole 40 of the armrest 30 and holding the lock member 70 inside from the tip side thereof. A pair of lock protrusion / retraction holes 111 are opened in the diameter direction.

Locking member 70 held in the insertion tube portion 110
Is made of a spring material having a substantially V-shaped cross-section, and lock projections 71, 71 projecting outwardly are provided at both tip ends of the spring projections. The lock member 70 has the insertion tube portion 11 from the base end side.
It is held in the insertion tube portion 110 in a state where the lock projection 71 is inserted into the lock projection insertion / retraction hole 111. And, the lock protrusion 71 is always in a state of being protruded from the lock protrusion protruding / retracting hole 111 by the restoring force of the spring material forming the lock member 70.

A lock releasing member 80 is mounted in the insertion tube portion 110 from the base end side of the insertion tube portion 110. The unlocking member 80 is made of a cylindrical member and has a main body 81
A step portion 82 is provided on the outer peripheral surface in the middle of the length of the step 82, and the tip end side of the step portion 82 is a reduced diameter portion 83 having an outer diameter reduced from that of the main body portion 81. A lock member insertion hole 84 having a substantially rectangular cross section is provided from the tip end surface of the reduced diameter portion 83 toward the inside of the main body portion 81.

The body portion 81 located in the middle of the lock member insertion hole 84 is provided with a long hole 85 in the longitudinal direction penetrating in the diametrical direction. A helical spring 86 is inserted and held in the lock member insertion hole 84 of the lock releasing member 80. In order to hold the coiled spring 86 in the lock member insertion hole 84, the coiled spring 86 is contracted and inserted toward the inner side of the lock member insertion hole 84, and is positioned on the outlet side of the lock member insertion hole 84. Then, the spring locking shaft 87 is mounted in the above-mentioned long hole 85.

The spring locking shaft 87 is formed to be slightly longer than the diameter of the lock releasing member 80, and both ends thereof project outward from the elongated hole 85.
On the other hand, inside the case main body 102, a pair of bearing grooves 140, 140 for supporting the spring locking shaft 87 is provided so as to be located on the outer circumference on the proximal end side of the insertion tubular portion 110. Also, the cover 103
A lock release member insertion hole 150 for inserting the main body 81 of the lock release member 80 is opened toward the insertion tube portion 110. Further, the cover 103 is attached to the case main body 102 at the inner end of the lock release member insertion hole 150 provided in the cover 103.
Installed on the bearing groove 140,
Locking protrusions 160, 160 for locking the spring locking shaft 87 inside
Is protruding.

In the lock releasing member 80, the reduced diameter portion 83 side is inserted into the insertion tube portion 110, and the main body portion 81 side is inserted into the lock releasing member insertion hole 150 formed in the cover 103.
By attaching the spring locking shaft 87 to the bearing groove 140 and closing the bearing groove 140 while the spring locking shaft 87 is locked in the bearing groove 140 by the locking protrusion 160 provided on the cover 103, It can be installed inside the case 100. At this time, the base end side of the lock member 70 is inserted into the lock member insertion hole 84 of the lock release member 80.

When the lock releasing member 80 is mounted in the case 100, the tip of the main body 81 of the lock releasing member 80 is always urged by the coiled spring 86 so that the lock releasing member insertion hole 150 formed in the cover 103 is opened. It is in a state of protruding from. Then, the lock release member is resisted against the bias of the coil spring 86.
When the lock release member 80 is pushed into the lock release member insertion hole 150, the lock release member 80 has a step portion 82 of the lock release member 80 within the range of the elongated hole 85 through which the spring locking shaft 87 is inserted. It is pushed into the insertion tube 110 until it abuts the end. Then, the base end side of the lock member 70 advances into the lock member insertion hole 84 of the lock release member 80, the lock member 70 is crushed so that the front end sides of the lock member 70 come close to each other, and the lock protrusion 71 is inserted into the lock protrusion insertion hole 111. It will be in the state of doing.

Further, inside the case main body 102, a lock release preventing member insertion hole 170 for inserting the lock release preventing member 90 is formed. At the outer peripheral part in the middle of the length of the lock release preventing member insertion hole 170, the lock release preventing member 9
A pair of shaft grooves 180, 180 for rotatably supporting the 0 is provided. The lock release blocking member 90 rotatably attached to the lock release blocking member insertion hole 170 includes an operating portion 91 protruding outward from the lock release blocking member insertion hole 170, and on the left and right side surfaces of the operating portion 91. Are provided with turning shafts 92, 92 projecting backwards from each other, and when attached to the case body 102 on the other side of the operating portion 91 with the turning shaft 92 sandwiched, they are directed toward the inside of the case body 102. An engagement protrusion 93 is provided. In addition, the unlocking prevention member 90 is attached to the case body
When attached to, the leaf spring 94 is attached by a bolt 95 to the inner side surface located inside the case body 102.

The unlocking prevention member 90 is a case body.
The turning shaft 92 is axially supported by the shaft groove 180 from the inner side of the 102, and the operating portion 91 is attached to the case main body 102 so as to project outward from the lock release preventing member insertion hole 170. At this time, the tip of the leaf spring 94 is covered with the cover 103.
A lock release preventing member that abuts the inner surface of the lock (shown in FIG. 7).
90 is urged so that the operation portion 91 projects outward from the lock release preventing member insertion hole 170.

In the above-mentioned protruding state, the lock release preventing member 90
The engaging projection 93 of engages with the stepped portion 82 of the unlocking member 80,
The operation of the lock releasing member 80 is regulated so that the lock releasing member 80 is not pushed into the insertion tube portion 110. Then, when the lock release preventing member 90 is rotated around the rotation shaft 92 such that the operation portion 91 is pushed into the lock release preventing member insertion hole 170, the lock portion is engaged with the step portion 82 of the lock release member 80. Of the lock release preventing member 90,
When the lock release member 80 is released, the lock release member 80 can be pushed into the insertion tube portion 110. (Mounting holes for armrests) Next, the left and right armrests
Each mounting hole 40 of 30 will be described with reference to FIGS.

As shown in FIGS. 6 and 7, each mounting hole 40 is provided from the outer surface of the armrest 30 toward the inner side of the armrest 30, and the inner diameter dimension thereof is larger than the outer diameter dimension of the insertion tube portion 110. It is slightly larger. In addition, the length of the mounting hole 40 is slightly longer than the length from the base end portion of the insertion tube portion 110 to the base end side of the lock projection projecting / retracting hole 111. Further, as shown in FIG. 7, guide grooves 41, 41 for guiding the lock protrusion 71 of the lock member 70 are formed on the inner surface of the entrance of the mounting hole 40.
However, a pair is provided facing each other.

As shown in FIG. 4, the mounting hole 40 is provided with a rotation angle restricting portion 190 for restricting the rotation angle of the connecting device 60. The rotation angle restricting portion 190 is provided on the inner surface on the back side of the mounting hole 40, and when the lock protrusion 71 is projected from the lock protrusion protruding / retracting hole 111 of the insertion cylindrical portion 110, the insertion cylindrical portion 110 has about 90 mm. A pair of rotation spaces 191 and 191, which are rotatable with respect to each other, and a pair of rotation spaces 191 and 191, which are opposed to each other, are provided between the pair of rotation spaces 191 and 191. Part 1
It has 92,192 and.

Therefore, the insertion tube portion is inserted to the back of the mounting hole 40.
When 110 is inserted and the lock protrusion 71 projects from the lock protrusion protruding / retracting hole 111 of the insertion tube portion 110, as shown in FIG.
The protective frame 10 can rotate downward in the range of about 90 ° with respect to the armrest 30. For this reason,
The protective frame 30 does not interfere when the protective frame 10 is removed from the armrest 30 and the infant is seated on the seat or is lowered from the seat. Furthermore, even when the stroller 20 is folded in the width direction, since the protection frame 10 rotates with respect to the armrest 30, the stroller 20 can be easily folded. (Mounting method) Next, the protective frame 10 having the above-described configuration
6 to 1 for how to attach and detach the armrest 30 to and from the armrest 30.
The description will be made by using the first example.

As shown in FIGS. 6 and 7, when the connecting device 60 of the protective frame 10 is removed from the mounting hole 40 of the armrest 30, the unlocking member 80 is urged by the coiled spring 86 to move the main body 81. The tip of the lock release member insertion hole 150 of the cover 103
It is in the state protruding from. In addition, the lock protrusion 71 of the lock member 70 is in a state of protruding from the lock protrusion retracting hole 111 of the insertion tube portion 110 toward the outside of the insertion tube portion 110. Further, the unlocking prevention member 90 is rotated counterclockwise around the rotation shaft 92 in FIG. 7 by the bias of the leaf spring 94, and the operation portion 91 is locked by the unlocking prevention member insertion hole 170.
While protruding outward from, the engaging projection 93 engages with the stepped portion 82 of the insertion tubular portion 110, and the lock release member 80 cannot be pushed into the insertion tubular portion 110.

Then, the lock projection protruding / retracting hole 1 of the insertion tube portion 110
When the lock protrusion 71 protruding from 11 is faced to the guide groove 41 of the mounting hole 40 and the insertion tube portion 110 is pushed into the mounting hole 40, the lock protrusion 71 of the lock member 70 is pushed to the inner surface of the mounting hole 40. Then, the insertion tube portion 110 can be pushed into the mounting hole 40 by being inserted into the lock projection projecting / retracting hole 111. Mounting holes in this way
When the insertion tube portion 110 is pushed all the way to the innermost part of the 40, as shown in FIGS.
Located in the rotation space 191, the lock protrusion 71 projects toward the outside of the insertion tube portion 110 from the lock protrusion retracting hole 111 due to its restoring force. Then, the lock protrusion 71 is locked to the rear end surface of the mounting hole 40, the insertion tube portion 110 is locked in the mounting hole 40, and the protection frame 10 can be mounted to the armrest 30. (Removing method) To remove the protective frame 10 from the armrest 30, as shown by the broken line in FIG.
The operation portion 91 of 90 is pushed into the lock release blocking member insertion hole 170. Then, the unlocking prevention member 90 rotates clockwise about the rotation shaft 92 in FIG.
The engaging projection 93 engaged with the stepped portion 82 is disengaged from the stepped portion 82.

In this state, as shown in FIGS. 10 and 11, since the operation of the lock releasing member 80 is not restricted,
Within the range of the elongated hole 85 through which the spring locking shaft 87 is inserted, the stepped portion 82 of the lock release member 80 is inserted into the insertion tubular portion against the bias of the coiled spring 86.
The lock release member 80 can be pushed into the insertion tube portion 110 until it comes into contact with the base end portion of the 110. Then, the base end side of the lock member 70 has the lock member insertion hole 84 of the lock release member 80.
Then, the lock member 70 is crushed so that the front ends of the lock member 70 come close to each other, and the lock protrusion 71 is moved into the lock protrusion hole 11.
1, the insertion tube portion 110 locked in the mounting hole 40 is unlocked, and the armrest 30 protects the protection frame 1 from the armrest 30.
0 can be removed.

That is, after the protective frame 10 is attached to the armrest 30 and locked, the lock is released to unlock the protective frame 10.
To remove 10, the unlocking prevention member 90 and the unlocking member 80 must be operated at the same time.
Further, since the lock release preventing member 90 and the lock release member 80 are provided close to each other and facing each other, they can be operated with one hand. For example, the lock release blocking member 90 may be operated with an index finger or the like while the coupling device 60 is grasped, and the lock release member 80 may be pushed in with the thumb.

From the mounting hole 40 of the armrest 30 to the connecting device 60
When the insertion tube portion 110 is completely removed, as shown in FIGS. 6 and 7, the lock member 70 again projects from the inside of the lock projection withdrawal hole 111 toward the outside of the insertion tube portion 110 due to its restoring force. Further, the lock releasing member 80 is in a state in which the tip end of the main body portion 81 is projected from the lock releasing member insertion hole 150 provided in the cover 103 by the bias of the coiled spring 86, and the engaging protrusion 93 is the lock releasing member 80. By engaging with the stepped portion 82, the operation of the lock releasing member 80 is restricted again.

In the above-described embodiment, the mounting holes 40 are provided at both end portions of the left and right armrests 30, and the connecting devices 60 are provided at both end portions of the protective frame 10, respectively. The connection device 60 may be provided only on one of the left and right armrests 30 and may be provided only on one end of the protective frame 10 corresponding to the mounting hole 40. In this case, the other end of the protective frame 10 is always connected to the tip of the opposing armrest 30. Further, the protective frame 10 which is always connected to the tip of the armrest 30 may be configured to be rotatable at the connecting portion, or may be provided with means for restricting the rotation angle thereof. (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS.

FIG. 12 is a cross-sectional view showing a state where the protective frame is removed from the armrest, FIG. 13 is a cross-sectional view showing a mounted state of the protective frame, and FIG. 14 is a cross-sectional view showing a state in which the lock releasing member is operated. Are shown respectively. The feature of the second embodiment is that the connecting device is concave, and a convex portion that fits the connecting device into the concave portion is formed in the mounting hole of the armrest.

In the second embodiment, the lock release preventing member is omitted, but like the first embodiment described above, the lock release preventing member causes the lock releasing operation by the lock releasing member. Is always blocked. (Protective Frame) The protective frame 200 of the second embodiment is shown in FIGS.
As shown in, the mounting hole provided at the tip of the armrest 30.
210 and a connecting device detachably attached to the mounting hole 210
220 and.

As shown in FIGS. 12 to 14, the coupling device 220 includes an insertion tube portion 230 provided at its tip and a coupling device 2
The lock release member insertion hole 240 opened from the surface side of 20 toward the inside of the insertion tube portion 230, and the lock release member insertion hole 240
And a lock releasing member 250 attached so as to be able to project in and out. The above-mentioned lock release member insertion hole 240 is provided with a step portion 241 on the distal end side of the insertion tube portion 230, and is a reduced diameter portion 242 whose diameter is reduced from the step portion 241 to the distal end side.

The lock releasing member 250, which is attached to the lock releasing member insertion hole 240 so as to be retractable and retractable, is a cylindrical member having one end closed, and in the middle of the length direction, the lock releasing member 250 extends in the diametrical direction. A long hole 251 has been opened. Further, a helical spring 252 is inserted and held in the unlocking member 250. In order to hold the coiled spring 252 in the lock releasing member 250, the coiled spring 252 is contracted and inserted from the open end of the lock releasing member 250 toward the rear side, and the coil spring 252 is positioned so as to be positioned on the open end side. The spring locking shaft 253 is attached in the elongated hole 251. The spring locking shaft 253 is formed to be slightly longer than the diameter of the lock releasing member 250, and both ends thereof project from the elongated hole 251 toward the outside,
It is supported by a bearing (not shown) provided on the outer peripheral portion of the lock release member insertion hole 240.

Therefore, the lock releasing member 250 is always urged by the coil spring 252 so that the lock releasing member insertion hole 2
The closed end side is projected from 40 toward the front side. Further, the lock releasing member 250 can be pushed into the lock releasing member insertion hole 240 within the range of the elongated hole 251 against the bias of the coiled spring 252. (Mounting hole for armrest) On the other hand, as shown in FIGS. 12 to 14, the mounting hole 210 has an inner diameter slightly larger than the outer diameter of the insertion tube portion 230.
It has a depth slightly longer than the length of the insertion tube portion 230.

At the inner end of the mounting hole 210, the mounting hole 210
A lock member 260 is provided so as to project toward the surface side of the. The lock member 260 includes a base 261 that is attached to the inner end of the attachment hole 210, and a pair of locking pieces 262 and 262 that project from the substantially central portion of the base 261. Each locking piece 262
Is made of synthetic resin or the like so as to be integrated with the base 261 and has flexibility and elasticity. Further, each locking piece 262 is provided with a locking step portion 263 projecting outward from the middle of the length, and a taper portion whose diameter is reduced from the locking step portion 263 toward the tip side. It is 264. Then, the distance between the outer surfaces of the tips of the two locking pieces 262 is
The diameter is smaller than the inner diameter of the reduced diameter portion 242 of the insertion hole, and the distance of the outer surface near the locking step portion 263 is larger than the inner diameter of the reduced diameter portion 242. Also base 2
The distance from 61 to the locking step 263 is the reduced diameter portion 24 of the mounting hole 210.
It is slightly longer than the length of 2.

In each of the lock members 260, the base 261 is screwed to the inner end surface of the mounting hole 210 so that the locking piece 262 projects from the inside of the mounting hole 210 toward the surface side of the mounting hole 210.
It is mounted in the mounting hole 210 by being mounted by 270. (Mounting method) Next, the protective frame 200 having the above-described configuration
The mounting method will be described with reference to FIGS.

As shown in FIG. 12, when the connecting device 220 of the protective frame 200 is removed from the mounting hole 210 of the armrest 30, the lock releasing member 250 is urged by the coiled spring 252 so that the closed end side is unlocked. It is in a state of protruding from the surface side of the insertion hole 240. Then, when the insertion tube portion 230 is inserted into the mounting hole 210 from the tip side, first, the locking piece 2 of the lock member 260 is inserted into the reduced diameter portion 242 of the lock release member insertion hole 240.
The tip side of 62 enters and the respective taper parts 264 are pushed by the inner wall surface of the reduced diameter part 242, and the locking pieces 262 bend and enter the mounting hole 210 so that the tip parts of the locking pieces 262 come close to each other. .

Further, when the insertion tube portion 230 is inserted into the mounting hole 210, as shown in FIG. 13, each tapered portion 264 passes through the reduced diameter portion 242 and the locking piece 262 is restored by its elasticity. The locking step 263 of the locking piece 262 engages with the step 241 of the mounting hole 210, and the protection frame 200 can be attached to the armrest 30. In this state, the tip end of the locking piece 262 has slightly entered the unlocking member 250. (Removing method) To remove the protective frame 200 from the armrest 30, as shown in FIG.
Is pushed into the lock release member insertion hole 240 within the range of the elongated hole 251 against the bias of the coiled spring 252. Then, the locking piece 2
The tip end side of 62 further enters into the insertion tubular portion 230, and each tapered portion 264 is pushed by the inner wall surface of the insertion tubular portion 230, and the locking piece 26
The locking pieces 262 bend so that the tip ends of the 2 come close to each other.

In this state, the stepped portion 241 of the mounting hole 210 and the locking stepped portion 263 of the locking piece 262 are disengaged, and the insertion tube portion 230 is pulled out from the inside of the mounting hole 210 to protect the armrest 30 from the protective frame. 2
00 can be removed. Then, the unlocking member 25
When the force pushing 0 is removed, the unlocking member 250
12, the coil spring 252 returns to the state in which the closed end side of the coil spring 252 is projected from the front surface side of the lock release member insertion hole 240.

Protective frame for stroller 20 according to the second embodiment
The 200 has a simpler structure and a smaller number of parts than the protection frame 10 according to the first embodiment. Therefore, manufacturing becomes easier and the manufacturing cost can be reduced.

[0052]

Since the present invention is configured as described above, it has the following effects. Claim 1
According to the described invention, it is possible to provide a stroller protection frame in which the connecting device can be reliably attached and detached.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the following effect is exhibited. That is, according to the second aspect of the present invention, the infant can be raised and lowered by removing only one of the left and right connecting devices. According to the invention of claim 3, in addition to the effect of the invention of claim 2 described above, the following effect is exhibited.

That is, according to the invention of claim 3,
By restricting the rotation angle of the connecting device, the protective frame can be prevented from rotating more than necessary. According to the invention described in claim 4, in addition to the effects of the invention described in claims 1 to 3, the following effects are exhibited. That is, according to the invention of claim 4, the armrest can be bent when the stroller is folded.

When the left and right connecting devices are made rotatable as in the second aspect of the invention, the stroller can be folded more easily.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a protective frame of a stroller.

FIG. 2 is a perspective view of the stroller with a protection frame attached.

FIG. 3 is an exploded perspective view of a protection frame connecting device.

FIG. 4 is a cross-sectional view showing a mounting hole of an armrest.

FIG. 5 is a perspective view showing a rotating state of a protective frame.

FIG. 6 is a vertical cross-sectional view showing a state in which a protective frame is removed.

FIG. 7 is a transverse sectional view corresponding to FIG.

FIG. 8 is a vertical cross-sectional view showing a mounted state of a protective frame.

9 is a transverse cross-sectional view corresponding to FIG.

FIG. 10 is a vertical cross-sectional view showing a state where the lock release preventing member is operated.

11 is a transverse sectional view corresponding to FIG.

FIG. 12 is a transverse cross-sectional view showing a second embodiment and showing a state in which the protective frame is removed from the armrest.

13 is a transverse cross-sectional view corresponding to FIG. 12 and showing a mounted state of the protective frame.

FIG. 14 is a cross-sectional view corresponding to FIG. 12, showing a state in which the lock releasing member is operated.

[Explanation of symbols]

10 Protective frame 20 Stroller 30 Armrest 40 Mounting hole 41 Guide groove 50 Flexible part 51 Leaf spring 52 Core material 53 Cover member 54 Mounting small hole 55 Mounting groove 60 Coupling device 70 Lock member 71 Lock protrusion 80 Lock release member 81 Main body 82 Stepped portion 83 Reduced diameter portion 84 Lock member insertion hole 85 Long hole 86 String spring 87 Spring locking shaft 90 Lock release prevention member 91 Operation portion 92 Rotation shaft 93 Engagement projection 94 Leaf spring 95 Bolt 100 Case 101 Insertion opening 102 Case body 103 Cover 110 Inserting cylinder 111 Lock protrusion / retract hole 120 Engagement boss 130 Mounting boss 140 Bearing groove 150 Lock release member insertion hole 160 Lock protrusion 170 Lock release prevention member insertion hole 180 Shaft groove 190 Rotation angle regulation Part 191 Rotating space 192 Restriction protrusion 200 Protective frame 210 Mounting hole 220 Coupling device 230 Insertion cylinder part 240 Lock release member insertion hole 241 Step part 242 Reduced diameter part 250 Lock release member 251 Long hole 252 Winding spring 253 Spring locking shaft 260 Lock member 261 Base 262 Locking piece 263 Locking step 264 Taper 270 Screw

Claims (4)

[Claims] 1. A stroller protection frame for preventing a seated infant from falling down from the seat by straddling between the left and right armrests of the stroller, wherein at least one of the left and right armrests has a protective frame. An attachment hole for attaching the frame is provided, a connection device that is detachably connectable to the attachment hole of the armrest is provided in the protection frame, and the connection device is locked in a state where the connection device is connected to the attachment hole. In a protective frame of a stroller including a lock member that locks the lock member and a lock release member that releases the lock by the lock member, the coupling device includes a lock release blocking member that always blocks the lock release operation by the lock release member. A stroller protection frame characterized by the provision of. 2. The left and right armrests are respectively provided with mounting holes for mounting a protective frame, and both ends of the protective frame are respectively provided with a pair of left and right connecting devices which can be detachably connected to the respective mounting holes of the armrest. The stroller protection frame according to claim 1, wherein the left and right connecting devices are formed so as to be rotatable with respect to the respective mounting holes. 3. The stroller protection frame according to claim 2, wherein each of the mounting holes is provided with a rotation angle restriction portion for restricting a rotation angle of the coupling device. 4. The stroller protective frame according to claim 1, wherein a flexible portion that can be bent is provided in the middle of the length of the protective frame.