JP5864315B2 - Infant auxiliary seat - Google Patents

Description

  The present invention relates to an infant auxiliary seat, and more particularly, to an infant auxiliary seat improved in safety by improving the strength of a fixing portion fixed to a handlebar of a bicycle.

  2. Description of the Related Art As an infant auxiliary seat used when an infant rides on a bicycle, an infant auxiliary seat of a type that is attached to a handle bar of a bicycle handle and attached to the rear of the handle bar is known. As an improved technique regarding this type of infant auxiliary seat, for example, techniques disclosed in Patent Documents 1 to 4 can be cited. The infant auxiliary seats proposed in Patent Documents 1 to 4 include a handlebar abutting portion that faces the handlebar from the rear, and a pair of left and right hooks that are fitted to the handlebar from above, as an attachment structure to the handle, Under these, it has a receiving means fitted to the handle stem from the rear.

  In addition, the infant auxiliary seats proposed in Patent Documents 3 and 4 are turned upside down to selectively use two types of hooks: a hook with a large protrusion from the handlebar abutting portion and a small hook. A possible structure has been proposed. That is, if the handlebar is close to the handlebar and the handlebar is close, use a small hook that protrudes forward, and if the handlebar is far away from the handlebar and handlebar, use a large hook that protrudes forward. You can use two types of hooks properly.

  However, it has been difficult to reverse the hook on the user side or the method of proper use is not understood. Focusing on such problems, Patent Document 5 proposes an infant auxiliary seat that can easily and reliably set and change a hook for hanging the infant auxiliary seat on the handlebar of a bicycle.

JP 2002-316680 A JP 2002-240763 A JP 2002-114182 A Japanese Utility Model Publication No. 63-100387 JP-A-2005-67422

  However, the infant auxiliary seat described in Patent Document 5 has a problem that the hanging means is easily deformed because the hanging means for hanging the infant auxiliary seat on the handlebar of the bicycle is long. In other words, when the bicycle is run with an infant on it or when a large impact is applied from the outside, such as when the bicycle falls, the hanging means may be deformed. Such deformation of the hanging means affects safety, and improvement is desired, but when a large impact is applied from the outside, including other infant auxiliary seats so far. On the other hand, the fact is that sufficient consideration has not always been made.

  Accordingly, an object of the present invention is to provide an infant auxiliary seat that improves the strength of a fixing portion that is fixed to a handlebar of a bicycle and improves safety.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that the above-mentioned problems can be solved by making the structure of the fixing portion for fixing the infant auxiliary seat to the handlebar a predetermined one. The present invention has been completed.

That is, the infant auxiliary seat of the present invention is an infant auxiliary seat attached to a handlebar of a bicycle,
In an infant auxiliary seat comprising: a seat on which an infant is seated; a holding frame that holds the seat; and a fixing portion that fixes the holding frame to the handlebar.
The fixing portion comprises a pair of latching hooks and a connecting portion that integrally couples the pair of latching hooks,
When the fixing portion is attached to the handle bar, the connecting portion is located on the opposite side of the seat portion with the handle stem interposed therebetween.

  In the infant auxiliary seat according to the present invention, it is preferable that the fixing portion has an attaching / detaching portion detachable from the holding frame, and the fixing portion is pivotally attached to the holding frame by the attaching / detaching portion. Further, the attaching / detaching portion has a bolt hole along the handlebar, the bolt hole of the attaching / detaching portion is disposed between a pair of bolt holes provided in the holding frame, and the fixing portion is pivoted to the holding frame by a bolt. Preferably it is worn. Furthermore, it is preferable that the distance from the attaching / detaching portion to the handle stem is 5 mm or less. Furthermore, it is preferable that the position of the seat portion is adjustable. Moreover, it is preferable that the edge part and base part of a pair of said latch hook can be clamped with respect to a handlebar with a screw | thread. Furthermore, it is preferable that the holding frame has a grip portion for gripping a handle stem. Furthermore, in the infant auxiliary seat according to the present invention, the pair of latch hooks and the connecting portion may be composed of one component, or may be composed of detachable multiple components.

  ADVANTAGE OF THE INVENTION According to this invention, the infant auxiliary seat which improved the intensity | strength of the fixing | fixed part fixed to the handlebar of a bicycle, and improved safety can be provided.

It is a perspective view which shows one suitable embodiment of the infant auxiliary seat of this invention. It is an exploded view of the fixed part which concerns on one suitable embodiment of the infant auxiliary seat of this invention. It is a perspective view which shows a suitable example of the holding frame of the infant auxiliary seat of this invention. It is an exploded view which shows the other suitable example of the fixing | fixed part of the infant auxiliary seat of this invention. 1 is a cross-sectional view of an infant auxiliary seat according to a preferred embodiment of the present invention and the vicinity of a handle stem of a bicycle. It is an exploded view of the holding part which concerns on one suitable embodiment of the infant auxiliary seat of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a preferred embodiment of the infant auxiliary seat of the present invention, and FIG. 2 is an exploded view of a fixing portion according to the preferred embodiment of the infant auxiliary seat of the present invention. . As shown in FIGS. 1 and 2, the infant auxiliary seat 10 of the present invention is of a type that is attached to the handle of a bicycle, a seat 1 on which an infant sits, a holding frame 2 that holds the seat 1, And a fixing portion 3 for fixing the holding frame 2 to the handle bar 11. In the infant auxiliary seat 10 of the present invention, the fixed portion 3 includes a pair of hooks 3a and a connecting portion 3b that integrally connects the pair of hooks 3a. In this way, the pair of latching hooks 3a of the fixing portion 3 that fixes the infant auxiliary seat 10 to the handle bar 11 are connected and integrally formed, so that a pair of latching hooks is provided like a conventional infant assisting seat. Compared with the case where these were independent, the intensity | strength of the fixing | fixed part 3 can be improved.

  In the infant assisting apparatus 10 of the present invention, the shape of the holding frame 2 is not particularly limited, and may be a left and right independent type, as shown in FIG. Also good. In this case, it is preferable that the reinforcing plates 2a and 2b installed between the left and right holding frames are provided at an appropriate interval. Bolt holes 4a are provided in the reinforcing plates 2a and 2b, and the seat portion 1 can be fixed with bolts. When the holding frame 2 of the infant auxiliary seat 10 is manufactured separately on the left and right sides, it is advantageous from the viewpoint of manufacturing cost. However, since the holding frame 2 is independent on the left and right, as shown in FIG. Compared with the case where 2 is integrally formed at the rear of the seat, there is a problem that the holding strength for the seat 1 is low. Therefore, in the infant auxiliary seat 10 according to the present invention, the fixing portion 3 for attaching the infant auxiliary seat 10 to the handle bar 11 has an integral structure as described above, and the holding frame 2 is integrally formed behind the seat portion. By forming, the stability of the infant auxiliary seat can be further improved.

  In the infant auxiliary seat 10 of the present invention, the pair of latching hooks 3a and the connecting portion 3b of the fixing portion 3 may be integrally connected, and the form thereof is not particularly limited. For example, as shown in FIGS. 1 and 2 as a preferred example, the fixing portion 3 may be formed of a pair of latching hooks 3a and a connecting portion 3b as a single component, or another preferred embodiment shown in FIG. As shown as an example, a pair of latching hooks 3a and a connecting portion 3b may be formed independently, and these may be integrally connected. In another preferred embodiment shown in FIG. 4, a connecting portion 3b is disposed between a pair of hooks 3a, and the pair of hooks 3a and the connecting portion 3b are connected by a bolt 5a. You may connect with the long volt | bolt and nut which penetrate the stop hook 3a.

  2 and 4, the connecting portion 3b of the fixing portion 3 is disposed between the lower ends of the pair of hooks 3a. However, in the infant auxiliary seat 10 of the present invention, the connecting portion 3b is a pair of The connecting portion 3b may be disposed so as to connect the central portions of the hooks 3a, and the connecting portion 3b is provided so as to connect portions of the pair of hooks 3a that are hooked to the handle bar 11. May be.

  In the infant auxiliary seat 10 of the present invention, the fixing portion 3 has an attaching / detaching portion 3c that can be attached to and detached from the holding frame 2, and the fixing portion 3 is pivotally attached to the holding frame 2 by the attaching / detaching portion 3c. preferable. By pivotally attaching the fixing part 3 to the holding frame 2, the child auxiliary seat 10 can be easily adjusted by adjusting the angle of the fixing part 3 even for a vehicle type having a different protruding amount of the upper end part of the handle stem 12 to which the handle bar 11 is attached. Can be attached.

  As a preferred example of such a structure, for example, as shown in FIG. 2, the connecting portion edge of the fixing portion 3 on the side facing the pair of latching hooks 3a is curved, and bolts are provided at both ends inside the curve. An attaching / detaching portion 3c is formed by arranging the rotating shaft member 6 having the hole 4b, and the attaching / detaching portion 3c is coaxially disposed between a pair of bolt holes 4c formed in the projecting piece 7 of the holding frame 2, A configuration in which the rotating shaft member 6 is screwed from both ends with two bolts 5b to pivotally attach the fixing portion 3 and the holding frame 2 can be exemplified.

  In the infant auxiliary seat 10 of the present invention, as shown in FIG. 1, when the fixing portion 3 is attached to the handle bar 11, the connecting portion 3 b is disposed on the opposite side of the seat portion 1 with the handle stem 12 interposed therebetween. Is preferred. By arranging the handle stem 12 between the connecting portion 3b and the holding frame 2 in this manner, the infant auxiliary seat 10 can be fixed stably and firmly, and the infant seated on the infant auxiliary seat 10 moves. Even so, the infant auxiliary seat 10 does not move, and the stability of the infant auxiliary seat 10 can be improved satisfactorily.

  FIG. 5 shows a cross-sectional view of the vicinity of the handle stem 12 in a state in which the infant auxiliary seat according to one preferred embodiment of the present invention is attached to the handle bar 11. In the infant auxiliary seat 10 of the present invention, the distance from the attaching / detaching portion 3c to the handle stem 11 is preferably 5 mm or less (in the illustrated example, the attaching / detaching portion 3c and the handle stem 12 are in contact). When an infant is seated on the infant auxiliary seat 10, a large load is applied to the fixing portion 3 of the infant auxiliary seat 10. In addition, a large impact is applied to the fixed portion 3 from the outside even when the bicycle falls. Therefore, in the infant auxiliary seat 10 of the present invention, the attaching / detaching portion 3c of the fixing portion 3 can be arranged in the vicinity of the handle stem 12, and even if the load or impact is applied to the fixing portion 3, these loads or It is preferable that the impact can be distributed and received with the handle stem 12. By adopting such a structure, it is possible to prevent deformation and breakage of the fixing portion 3, particularly the pair of hooks 3a. In order to obtain the best effect, it is preferable that the attaching / detaching portion 3c of the fixing portion 3 and the handle stem 12 are in contact with each other as shown in the drawing. In addition, it is not preferable that the distance between the attaching / detaching portion 3c and the handle stem 12 in the fixing portion 3 of the infant auxiliary seat 10 is 5 mm or more because the above effect cannot be obtained sufficiently.

  In the infant auxiliary seat 10 of the present invention, as shown in FIG. 5, the cross-sectional shape in the direction orthogonal to the axial direction of the attaching / detaching portion 3 c of the fixing portion 3 is preferably substantially circular. With this structure, the distance between the attaching / detaching portion 3c and the handle stem 12 can be made constant even when the angle of the fixing portion 3 is adjusted, and the angle of the fixing portion 3 can be adjusted smoothly.

  In the infant auxiliary seat 10 of the present invention, the position of the seat portion 1 is preferably adjustable. For example, as shown in FIGS. 1 to 3, the height of the seat portion 1 is adjusted in multiple stages by drilling a plurality of bolt holes 4 c (three pairs in the illustrated example) in the projecting piece 7 of the holding frame 2. be able to. As shown in the figure, the height adjustment method of the seat portion 1 may be a long hole as well as a plurality of pairs of bolt holes 4 c in the holding frame 2.

  Moreover, in the infant auxiliary seat 10 of the present invention, as shown in FIGS. 1 to 3, it is preferable that the end portion and the base portion of the pair of hooks 3 a can be clamped to the handlebar 11 with screws 8. . By clamping the handle bar 11 with the latch hook 3a, the infant auxiliary seat 10 and the handle bar 11 can be more firmly fixed, and the stability of the infant auxiliary seat 10 can be further improved. it can.

  Furthermore, in the infant auxiliary seat 10 of the present invention, it is preferable that the holding frame 2 has a grip portion 9 for gripping the handle stem 12 as shown in FIGS. By holding the holding frame 2 on the handle stem 12, the stability of the infant auxiliary seat can be further improved. FIG. 6 shows an exploded view of a gripping part according to a preferred embodiment of the infant auxiliary seat of the present invention. For example, as shown in the figure, a lower gripping part 9a laid between a pair of holding frames 2, The handle stem 12 is gripped by the upper gripping portion 9b, and the bolt hole 4d drilled in the lower gripping portion 9a and the bolt hole 4e drilled in the upper gripping portion 9b are fixed by bolts 5c.

  The infant auxiliary seat 10 of the present invention includes a seat portion 1 on which an infant is seated, a holding frame 2 that holds the seat portion 1, and a fixing portion 3 that fixes the holding frame 2 to the handlebar 11. It is important that 3 is composed of a pair of latch hooks 3a and a connecting portion 3b that integrally couples the pair of latch hooks 3a, and there is no particular limitation, and a known configuration is adopted. Can do. For example, the seat 1 is usually placed on the holding frame 2, but the shape of the seat 1, whether or not the cushion material is arranged, the shape and material of the cushion material, and the like can be selected as appropriate. The infant auxiliary seat 10 of the present invention may be provided with a handle for an infant.

DESCRIPTION OF SYMBOLS 1 Seat part 2 Holding frame 2a Reinforcement plate 3 Fixing part 3a Stop hook 3b Connection part 3c Detachable part 4a, 4b, 4c, 4d, 4e Bolt hole 5a, 5b, 5c Bolt 6 Rotating shaft member 7 Protruding piece 8 Screw 9 Grasping Part 9a Lower grip part 9b Upper grip part 10 Infant auxiliary seat 11 Handle bar 12 Handle stem

Claims (9)

An infant auxiliary seat attached to the handlebar of a bicycle,
In an infant auxiliary seat comprising: a seat on which an infant is seated; a holding frame that holds the seat; and a fixing portion that fixes the holding frame to the handlebar.
Wherein a fixing portion is a pair of locking hooks, and a connecting portion integrally connecting said pair of latching hooks, Ri Tona,
The infant auxiliary seat , wherein when the fixing portion is attached to a handlebar, the connecting portion is located on the opposite side of the seat portion with a handle stem interposed therebetween .   The infant auxiliary seat according to claim 1, wherein the fixing portion has an attaching / detaching portion that is detachable from the holding frame, and the fixing portion is pivotally attached to the holding frame at the attaching / detaching portion. The attachment / detachment portion has a bolt hole along the handlebar, the bolt hole of the attachment / detachment portion is disposed between a pair of bolt holes provided in the holding frame, and the fixing portion is pivotally attached to the holding frame by a bolt. The infant auxiliary seat according to claim 2 . The infant auxiliary seat according to claim 2 or 3, wherein a distance from the attaching / detaching portion to the handle stem is 5 mm or less. The position of the said seat part is adjustable, The infant auxiliary seat as described in any one of Claims 1-4. The child auxiliary seat according to any one of claims 1 to 5 , wherein an end portion and a base portion of the pair of hooks can be clamped to the handlebar with screws. The infant auxiliary seat according to any one of claims 1 to 6 , wherein the holding frame includes a grip portion for gripping a handle stem. The infant auxiliary seat according to any one of claims 1 to 7 , wherein the pair of latching hooks and the connecting portion are made of one part. The infant auxiliary seat according to any one of claims 1 to 7 , wherein the pair of hooks and the connecting portion are detachable.

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