JP2019214220A - Foldable tricycle for infant - Google Patents

Abstract

To provide a foldable tricycle for an infant, which has a folding structure simplified and allows locking and lock-releasing to be surely performed when folding the tricycle while securing safety.SOLUTION: In a foldable tricycle for an infant in which a handle frame comprising pedals at a front wheel and left and right rear wheels are constituted of a vehicle-body frame mounted with a saddle, one end of a vehicle-body front part frame is fitted into a front position of the vehicle-body frame and a tip of a vehicle-body rear part frame is fitted into an intermediate position to connect the frames foldably, which are folded at front and rear pivotally-provided positions of a vehicle-body intermediate frame pivotally connected to the vehicle-body front part frame at the front position and pivotally connected to the vehicle-body rear part frame at a rear position, and an L-shape lock member is connected to the vehicle-body rear part frame, so as to lock states of the tricycle not yet folded and already folded.SELECTED DRAWING: Figure 2

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding tricycle for infants, in which the space for storing and storing the tricycle for infants is significantly reduced, and the folding structure is simplified to ensure safety.

  In many homes such as apartment houses and high-rise houses, a tricycle for infants is stored in the entrance of the house or stored at the entrance. In addition, every time a child plays a tricycle outdoors or in a park, take it out using an elevator or stairs, and after use, install and store it again at the entrance, entrance, or veranda. You are doing. Further, there is a case where a tricycle is loaded in a trunk of a car or the like and goes out for vacation.

  In such a case, even a tricycle for infants needs a certain amount of storage and storage space, so the entrances and entrances of houses that are limited in size are made small, and when entering and exiting the entrance. It can be an obstacle. Further, when a tricycle is stored together with various kinds of luggage in an automobile trunk or the like and goes out for a leisure trip, the bulkiness of the tricycle often becomes an obstacle. In addition, when carrying a tricycle, especially when carrying it up and down stairs, it is difficult for a young person to carry it, holding it with both hands, making it difficult to carry it in a stable form.

  By the way, although folding tricycles of various structures have been proposed in the past (for example, Patent Documents 1 to 4), there are advantages and disadvantages in structure, and there is much room for improvement mechanically. For this reason, we do not know the fact that a practically useful folding tricycle has been commercialized before.

Japanese Utility Model Publication No. 50-126373 JP-A-53-164277 Japanese Utility Model Publication No. 55-37782 Registered Utility Model No. 30621151

  Therefore, the present applicant subsequently folds the tricycle to greatly reduce its installation, storage space, etc., so that the folding operation and the form change to the use state can be easily performed, and at the time of use, A patent is obtained by applying for a folding tricycle equipped with a unique mechanism such as a lock that enables safe use of the vehicle (Patent No. 3631669).

  However, in the folding tricycle disclosed in Japanese Patent No. 3631669, the locked state at the time of folding is maintained or released by pushing the operation piece provided on the lock plate, but the operation piece is pushed. Had to be operated by putting his hand in a narrow place, and there was a problem that operation was difficult. In addition, since the bent rod portion is locked in the engagement concave portion of the lock plate, there is a problem that the lock cannot be reliably performed. An object of the present invention is to solve the above-described disadvantages, to simplify a folding structure, and to surely secure and release a locked state and an unlocked state at the time of folding to secure safety.

  In order to achieve the above object, a folding tricycle for an infant according to claim 1, wherein a handle frame having a pedal on a front wheel and left and right rear wheels are framed by a body frame having a saddle attached thereto. , One end of the vehicle body front frame is fitted into the front position of the vehicle body frame, and the tip of the vehicle body rear frame is fitted into the intermediate position so as to be foldably connected, and is pivotally mounted at the front position with the vehicle body front frame. Folding lock device that folds at the front and rear pivot positions of the vehicle body intermediate frame pivotally installed at the rear and rear positions, and connects the L-shaped locking member to the vehicle body rear frame to lock the state before and after folding. Is provided.

  A folding tricycle for an infant according to a second aspect is the folding tricycle for an infant according to the first aspect, wherein the folding lock device includes an operating piece provided at the rear of the saddle and an operating piece provided at one end of the long side of the L-shape. And the L-shaped short side is inserted into an elliptical hole formed in the back of the body frame, and an L-shaped lock member that operates in conjunction with the operation of the operation piece is connected to one end of the operation piece. And a spring for urging the movement of the piece to an initial state.

  Further, the folding tricycle for infants according to claim 3 is the folding tricycle for infants according to claim 1, wherein the locked state before folding is a U-shape in which the short side of the L-shape is provided at the tip of the rear frame of the vehicle body. It is characterized by being inserted into a connection hole.

  Further, the infant tricycle according to claim 4 is the infant tricycle according to claim 1, wherein the locked state after folding is such that an L-shaped short side is provided in a locking hole provided at a tip end of a rear frame of the vehicle body. It is characterized by being locked.

  ADVANTAGE OF THE INVENTION According to the folding tricycle for infants by this invention, in the folding tricycle for infants which comprises the handle frame provided with the pedal on the front wheel and the right and left rear wheels by the body frame to which the saddle is attached, the front of the body frame One end of the vehicle body front frame is fitted at the position, the front end of the vehicle body rear frame is fitted at the intermediate position and foldably connected, pivotally mounted at the front position with the vehicle body front frame, and pivoted at the rear position with the vehicle body rear frame. The folding lock device that folds the front and rear pivotal positions of the vehicle body intermediate frame and connects the L-shaped locking member to the vehicle body rear frame to lock the state before and after folding is provided. The structure can be simplified, and the locked state and unlocked state at the time of folding can be reliably performed, and safety can be ensured.

  Further, according to the folding tricycle for infants of the present invention, the folding lock device comprises: an operation piece provided at the rear of the saddle; one end of a long side of the L-shape fixed to the operation piece; An L-shaped lock member that is inserted into an elliptical hole formed on the back surface of the operating piece and operates in conjunction with the operation of the operating piece, and a spring that is connected to one end of the operating piece and urges the operation of the operating piece to an initial state Thus, the folding structure can be simplified.

  According to the folding tricycle for infants of the present invention, the locked state before folding is such that the short side of the L-shape is inserted into the U-shaped connecting hole provided at the end of the rear frame of the vehicle body, so that the locked state before the folding is achieved. The lock state can be reliably performed, and safety can be ensured.

  According to the folding tricycle for infants of the present invention, since the locked state after folding is such that the short side of the L-shape is locked in the locking hole provided at the tip of the rear frame of the vehicle body, the locked state after folding. And safety can be ensured.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the folding tricycle for infants concerning this invention. It is a principal part exploded view of a folding mechanism part. It is a principal part perspective view of a fold lock apparatus. It is operation | movement explanatory drawing which shows the lock state before folding. It is operation | movement explanatory drawing which shows the locked state after folding. It is a perspective view which shows the folding state of the folding tricycle for infants.

  Hereinafter, embodiments of a folding tricycle for infants according to the present invention will be sequentially described with reference to the drawings. First, the overall configuration of the folding tricycle for an infant will be described. In FIG. 1, H is a handle frame of a folding tricycle for infants. A front wheel R1 is fitted to lower end portions of a pair of left and right handle masts M1 and M2 supported at two upper and lower positions near the middle, and the handle masts M1 and M2. Is bent outward in the left and right direction, and handle grips G1 and G2 are fitted and fixed to both ends thereof.

  The left and right intervals of the handle masts M1, M2 are fixedly maintained by intermediate metal fittings K1, K2 pivoted at two positions above and below the handle pipe P. D is a pedal attached to the left and right sides of the crank rotation shaft of the front wheel R1. S is a saddle made of a hard synthetic resin attached to the vehicle body frame 10, and T is a backrest, which is held by two pillars standing on the rear of the saddle S. N is an accessory case attached to the rear of the folding tricycle for infants, and R2 and R3 are rear wheels.

  FIG. 2 is an exploded view showing a main part of the folding mechanism. Reference numeral 10 denotes a U-shaped body frame having both ends bent at right angles. A saddle S is attached to the front side, and the back side is bent at right angles. One end 31 of the vehicle body front frame 30 is fitted into the inner front position 11, the front end 51 of the vehicle body rear frame 50 is fitted into the intermediate position 12, and is foldably connected and supported by bolts and nuts. The vehicle body front frame 30 is formed so as to protrude downward from the vicinity of the middle of the handle pipe P, and has a stay 32 at the front end for inserting the front 41 of the vehicle body intermediate frame 40. The rear body frame 50 is formed so as to protrude forward from the middle of a reinforcing pipe 60 which is rotatably supported at the right and left sides of the rear end of the folding tricycle for infants and which is rotatably supported and bent in a substantially U-shape. The end 51 has a locking hole 52, a U-shaped connecting hole 53, and a stay 54 for inserting the rear 42 of the vehicle body intermediate frame 40. The vehicle body intermediate frame 40 connects the vehicle body front frame 30 and the vehicle body rear frame 50, and the front 41 is inserted into the stay 32 of the vehicle body front frame 30, and the rear 42 is inserted into the stay 54 of the vehicle body rear frame 50. Pivotably connect.

  FIG. 3 is a perspective view showing a main part of the foldable lock device. Reference numeral 61 denotes an operation piece provided at the rear of the saddle S to start a folding operation. Is fixed to the claw portion 61a of the operation piece 61, and the short side 64 of the L-shape is inserted into the oval hole 13 formed in the back surface of the vehicle body frame 10. One end of a spring 65 is connected to the claw portion 61a of the operation piece 61, and urges the operation of the operation piece 61 to an initial state.

  Next, a description will be given of the operation of folding the infant tricycle having the usage pattern as shown in FIG. In the state before the folding, as shown in FIG. 4, the L-shaped short side 64 of the lock member 62 is fitted into a U-shaped connecting hole 53 provided at the tip end 51 of the rear frame 50 of the vehicle body, and Maintain the locked state of. In order to fold the folding tricycle for infants from this state, the lower part of the operation piece 61 provided at the rear of the saddle S is pulled upward, and the rear of the saddle S is lifted. One end 63a of the long side 63 of the L-shape of the member 62 moves, the short side 64 of the L-shape of the lock member 62 moves in the elliptical hole 13 and disengages from the U-shaped connection hole 53, and the locked state before folding. Cancel.

  When the locked state before the folding is released, the vehicle is folded at the pivotal positions of the front 41 of the vehicle body front frame 30 and the vehicle body intermediate frame 40 and the pivot positions of the vehicle body rear frame 50 and the rear 42 of the vehicle body intermediate frame 40, as shown in FIG. As shown in the figure, the folding tricycle for infants is folded. The L-shaped short side 64 of the lock member 62 that has come off from the U-shaped connection hole 53 is locked in a locking hole 52 provided in the front end 51 of the rear frame 50 of the vehicle body, as shown in FIG. By locking in the locking hole 52, the locked state after folding is maintained.

  Next, an operation of changing the form of the folding tricycle for infants folded as shown in FIG. 6 to the original use state will be described. To release the folded state, pull up the lower part of the operation piece 61 provided behind the saddle S, and lift the accessory case N attached to the rear part of the folding tricycle for infants, and fix it to the claw 61a of the operation piece 61. One end 63a of the long side 63 of the L-shaped lock member 62 moves, the short side 64 of the L-shape of the lock member 62 moves in the elliptical hole 13, and the lock provided at the tip 51 of the rear frame 50 of the vehicle body. It comes off from the stop hole 52 and releases the locked state after folding. At the pivotal positions of the front 41 of the vehicle body front frame 30 and the vehicle body intermediate frame 40 and the pivot positions of the vehicle body rear frame 50 and the rear 42 of the vehicle body intermediate frame 40, the L-shaped short side of the lock member 62 is returned. Reference numeral 64 is fitted in the U-shaped connection hole 53. The engagement with the U-shaped connection hole 53 maintains the locked state before folding.

  As described above, according to the present invention, in a folding tricycle for infants, in which a handle frame having a pedal on a front wheel and left and right rear wheels are framed by a body frame to which a saddle is attached, One end of the vehicle body front frame is fitted into the front position, and the front end of the vehicle body rear frame is fitted into the intermediate position so that it can be folded and connected, pivotally mounted on the vehicle body front frame at the front position, and pivoted with the vehicle body rear frame at the rear position. Since the front and rear pivotal positions of the vehicle body intermediate frame to be installed are folded and the L-shaped locking member is connected to the vehicle body rear frame to provide a folding lock device that locks the state before and after folding, The folding structure can be simplified and the locked state and unlocked state at the time of folding can be reliably performed, so that safety can be ensured.

H Handle frame M1, M2 Handle mast G1, G2 Handle grip P Handle pipe K1, K2 Middle fitting
R1 Front wheel D Pedal R2, R3 Rear wheel S Saddle T Backrest N Small box 10 Body frame 11 Front position 12 Intermediate position 13 Oval hole 30 Body front frame 31 One end 32 Stay 40 Body middle frame 41 Front 42 Rear 50 Body rear frame 51 Tip 52 Locking hole 53 U-shaped connection hole 54 Stay 60 Reinforcement pipe 61 Operating piece 61a Claw 62 L-shaped lock member 63 L-shaped long side 63a Long side one end 64 L-shaped short side 65 Spring

Claims (4)

  One end of a vehicle body front frame is fitted to a front position of the vehicle body frame in a folding tricycle for infants, in which a handle frame having a pedal on a front wheel and left and right rear wheels are framed by a vehicle body frame to which a saddle is attached. , The front end of the vehicle body rear frame is fitted into the intermediate position so as to be foldably connected, and is pivotally mounted at the front position with the vehicle body front frame, and is pivotally mounted at the rear position with the vehicle body rear frame. A folding tricycle for an infant, comprising: a folding lock device that folds at a pivotal position and connects an L-shaped locking member to the rear frame of the vehicle body to lock a state before and after folding.   The folding lock device has an operation piece provided at the rear of the saddle, and one end of a long side of an L-shape fixed to the operation piece, and a short side of the L-shape is formed in an elliptical hole formed in a back surface of the body frame. An L-shaped lock member that is inserted and operates in conjunction with operation of the operation piece, and a spring that is connected to one end of the operation piece and urges the operation of the operation piece to an initial state. The folding tricycle for infants according to claim 1, wherein   The infant tricycle according to claim 1, wherein the locked state before the folding is such that the short side of the L-shape is inserted into a U-shaped connecting hole provided at a tip of the rear frame of the vehicle body.   The folding three-wheeled vehicle for an infant according to claim 1, wherein the locked state after the folding is such that a short side of the L-shape is locked in a locking hole provided at a tip of the rear frame of the vehicle body.

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