CN2405850Y

CN2405850Y - Tricycle for children

Info

Publication number: CN2405850Y
Application number: CN 00216116
Authority: CN
Inventors: 贺新军
Original assignee: Goodbaby Group Corp
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2000-01-10
Filing date: 2000-01-10
Publication date: 2000-11-15
Anticipated expiration: 2010-01-10

Abstract

The utility model relates to a tricycle for children, which comprises a front frame, a rear frame (8), a front wheel (10), two rear wheels (7), and a saddle (4), wherein, the front frame comprises a front fork (2) and a handle (3); a foot board (9) is connected to the shaft part of the front wheel (10) via a crank (1). The utility model is characterized in that a shaft axis of the front wheel (11) of the front wheel (10) is positioned at the rear part of the shaft axis of a rotating shaft (12) of the front fork above the front fork (2); the arrangement of the front wheel is similar to a universal wheel, and thus when the tricycle is pushed rearward, the running direction of the tricycle can be rotated at will, omitting driving mechanisms.

Description

Child's tricycle

The utility model relates to a kind of child's tricycle.

The back vehicle frame that in the prior art, the structure of child's tricycle comprises front vehicle frame, be rotatably connected with described front vehicle frame, be arranged at the front-wheel of described front vehicle frame below, respectively be arranged at the left and right sides, rear portion of described back vehicle frame two trailing wheels, be arranged at the vehicle seat on the vehicle frame of described back; Described front vehicle frame comprises the front fork of below bifurcated and is arranged at the handgrip of top and arranged on left and right sides, described handgrip and described front fork connect as one rigidly, described front-wheel is arranged on the described front fork, and tread plate is by the axial region of crank connecting link in described front-wheel; The front-wheel axial line of described front-wheel is positioned at the front portion of the axial line of the front fork rotating shaft above the described front fork.Children can freely rotate front fork when holding described handgrip, thereby the direction of front wheel, make child's tricycle can change direction of travel, but the adult can not control the direction of front fork and front-wheel when promoting child's tricycle, also promptly can not control the direction of travel of child's tricycle.In the prior art, for the adult can control the left and right moving direction of front fork, there is the lower end of the push rod on the vehicle frame of a kind of back to be provided with driving device, this driving device can twist, control the left and right swing of front-fork, and then the direction of travel of control child's tricycle, but this structure is very complicated.

The purpose of this utility model is to provide a kind of adult can control the child's tricycle of child's tricycle direction of travel at the rear portion of back vehicle frame.

The technical solution of the utility model is: a kind of child's tricycle, the back vehicle frame that comprises front vehicle frame, is rotatably connected with described front vehicle frame, be arranged at the front-wheel of described front vehicle frame below, respectively be arranged at the left and right sides, rear portion of described back vehicle frame two trailing wheels, be arranged at the vehicle seat on the vehicle frame of described back; Described front vehicle frame comprises the front fork and the handgrip that is arranged at the top and arranged on left and right sides of below bifurcated, and described front-wheel is arranged on the described front fork, and tread plate is by the axial region of crank connecting link in described front-wheel; The front-wheel axial line of described front-wheel is positioned at the rear portion of the axial line of the front fork rotating shaft above the described front fork, make that the deviation distance of axial line of described front-wheel axial line and described front fork rotating shaft is e, the axial line of described front fork rotating shaft is the axial line of the axle that is rotatably connected of described front vehicle frame and described back vehicle frame.

The utility model compared with prior art has following advantage:

Because the setting of front-wheel is similar to a cardan wheel, when therefore promoting child's tricycle in the back, can make the working direction of any rotation child's tricycle, omitted transmission device.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is the structural front view of embodiment one of the present utility model;

Accompanying drawing 2 is the structural front view of embodiment two of the present utility model;

Accompanying drawing 3 is the structural front view of embodiment three of the present utility model;

Accompanying drawing 4 is a three-dimensional structure diagram of the present utility model;

Accompanying drawing 5 is the structure cutaway view (when being in released state) of the blocking device between handgrip of the present utility model and the described front fork;

Accompanying drawing 6 is the A-A place cutaway view of accompanying drawing 5;

Accompanying drawing 7 is the B-B place cutaway view of accompanying drawing 5;

Accompanying drawing 8 is the structure cutaway view (when being in the lock state) of the blocking device between handgrip of the present utility model and the described front fork;

Accompanying drawing 9 is the C-C place cutaway view of accompanying drawing 8;

Accompanying drawing 10 is the structure cutaway view of the another kind of blocking device between handgrip of the present utility model and the described front fork;

[1], crank; [2], front fork; [3], handgrip; [4], vehicle seat; [5], rear push-rod; [6], locking fixture block; [7], trailing wheel; [8], back vehicle frame; [9], tread plate; [10], front-wheel; [11], front-wheel axial line; [12], front fork rotating shaft; [13], front wheel carrier; [14], lock sleeve; [15], back vehicle frame adapter sleeve; [16], locking hole; [e], deviation distance;

Embodiment: referring to accompanying drawing 1 to accompanying drawing 4, a kind of child's tricycle, the back vehicle frame [8] that comprises front vehicle frame, is rotatably connected with described front vehicle frame, be arranged at the front-wheel [10] of described front vehicle frame below, respectively be arranged at the left and right sides, rear portion of described back vehicle frame [8] two trailing wheels [7], be arranged at the vehicle seat [4] on the described back vehicle frame [8]; Described front vehicle frame comprises the front fork [2] of below bifurcated and is arranged at the handgrip [3] of top and arranged on left and right sides, and described front-wheel [10] is arranged on the described front fork [2], and tread plate [9] is connected in the axial region of described front-wheel [10] by crank [1]; The front-wheel axial line [11] of described front-wheel [10] is positioned at the rear portion of the axial line of the front fork rotating shaft [12] above the described front fork [2], make that the described front-wheel axial line [11] and the deviation distance of the axial line of described front fork rotating shaft [12] are the e of institute's mark in the accompanying drawing, the axial line of described front fork rotating shaft [12] is the axial line of the axle that is rotatably connected of described front vehicle frame and described back vehicle frame [8].

Accompanying drawing 1 is not for being provided with the structural front view of blocking device between front fork [2] and the handgrip [3]; Need overcome torsion that child hold handgrip [3] when the adult controls the direction of travel of child's tricycle from behind this moment.

Accompanying drawing 2 is for being provided with the structural front view of blocking device between front fork [2] and the handgrip [3], the front fork rotating shaft [12] of front fork [2] is positioned at the rear portion of described front fork [2], but front-wheel axial line [11] still is positioned at the rear portion of described front fork rotating shaft [12].

Be provided with blocking device between described handgrip [3] and the described front fork [2]; Described blocking device has two kinds of mode of operations, first mode of operation is a locking state, by described blocking device rigidly be connected as a single entity between described handgrip [3] and the described front fork [2] this moment, and the front vehicle frame that described handgrip [3] and described front fork [2] are formed is rotated with respect to described back vehicle frame [8] jointly; Can oneself control the direction of front-wheel [10] when this moment, child held handgrip [3], also can control the rotation direction of front-wheel [10] by the adult of back.Second mode of operation is a released state, described front fork this moment [2] can rotate with respect to described handgrip [3] and described back vehicle frame [8], its rotational axis line is the axial line of described front fork rotating shaft [12], promptly front fork this moment [2] can rotate with respect to handgrip [3], front fork [2] also can rotate with respect to back vehicle frame [8], the rotation of the uncontrollable front fork of described handgrip [3] [2] has only the adult of back can rotate the direct of travel of child's tricycle.

Accompanying drawing 5, accompanying drawing 6, in the accompanying drawing 7, described blocking device is released state, described back vehicle frame adapter sleeve [15] and described back vehicle frame [8] weld together, described lock sleeve [14] can not relatively rotate (referring to accompanying drawing 6) with back vehicle frame adapter sleeve [15], described lock sleeve [14] can not relatively rotate (referring to accompanying drawing 7) with described handgrip [3], be that handgrip [3] can not rotate with respect to back vehicle frame [8], but the front fork rotating shaft [12] on the front fork [2] but can freely be rotated (referring to accompanying drawing 7) with respect to back vehicle frame [8] and handgrip [3], front-wheel this moment [10] plays cardan wheel, and blocking device is in released state.

In accompanying drawing 8 and the accompanying drawing 9, described back vehicle frame adapter sleeve [15] and described back vehicle frame [8] be weld together still, but front fork rotating shaft [12] but can not be rotated (referring to accompanying drawing 9) with respect to described handgrip [3], the front vehicle frame that front fork [2] and handgrip [3] are formed is that turning cylinder rotates with respect to described back vehicle frame [8] with described handgrip rotating shaft, and this moment, blocking device was in locking state.

Accompanying drawing 10 is a kind of very simple blocking devices, be equipped with locking hole [16] in the rotating shaft of described front fork rotating shaft [12] and handgrip [3], when inserting in the pin in two holes, front fork rotating shaft [12] and handgrip [3] are connected to one and can not relatively rotate, and blocking device is in locking state; When extracting pin, described blocking device is in released state, and handgrip [3] can freely rotate with respect to front fork [2], also can freely rotate with respect to described back vehicle frame [8].

Described back vehicle frame [8] is provided with the rear push-rod of upwards erectting [5], is convenient to the adult and turns in the rear portion of child's tricycle promotion child's tricycle walking and control.

Referring to accompanying drawing 1 and accompanying drawing 2, described front fork rotating shaft [12] is convenient to turning to of front-wheel [10] perpendicular to the ground that is used to support described front-wheel [10] and trailing wheel [7], but also can be as shown in Figure 3, and front fork rotating shaft [12] is skewed with ground.

The bottom of described front fork [2] extends back and forms front wheel carrier [13], and described front-wheel [10] is arranged at the rear portion of described front wheel carrier [13].

Claims

1, a kind of child's tricycle, the back vehicle frame [8] that comprises front vehicle frame, is rotatably connected with described front vehicle frame, be arranged at the front-wheel [10] of described front vehicle frame below, respectively be arranged at the left and right sides, rear portion of described back vehicle frame [8] two trailing wheels [7], be arranged at the vehicle seat [4] on the described back vehicle frame [8]; Described front vehicle frame comprises the front fork [2] of below bifurcated and is arranged at the handgrip [3] of its top and arranged on left and right sides, and described front-wheel [10] is arranged on the described front fork [2], and tread plate [9] is connected in the axial region of described front-wheel [10] by crank [1]; It is characterized in that: the front-wheel axial line [11] of described front-wheel [10] is positioned at the rear portion of the axial line of the front fork rotating shaft [12] above the described front fork [2], makes the described front-wheel axial line [11] and the deviation distance of the axial line of described front fork rotating shaft [12] be [e].

2, child's tricycle according to claim 1 is characterized in that: be provided with blocking device between described handgrip [3] and the described front fork [2]; Described blocking device has two kinds of mode of operations, first mode of operation is a locking state, by described blocking device be connected in one between described handgrip [3] and the described front fork [2] this moment, the front vehicle frame that described handgrip [3] and described front fork [2] are formed is rotated with respect to described back vehicle frame [8], and the rotational axis line of described front vehicle frame is the axial line of described front fork rotating shaft [12]; Second mode of operation is a released state, and [2 with respect to described handgrip [3] and described back vehicle frame [8] rotation, and the rotational axis line of described front fork [2] is the axial line of described front fork rotating shaft [12] for described front fork at this moment.

3, child's tricycle according to claim 1 is characterized in that: described back vehicle frame [8] is provided with the rear push-rod of upwards erectting [5].

4, child's tricycle according to claim 1 is characterized in that: described front fork rotating shaft [12] is perpendicular to the ground that is used to support described front-wheel [10] and trailing wheel [7].

5, child's tricycle according to claim 1 is characterized in that: the bottom of described front fork [2] extends back and forms front wheel carrier [13], and described front-wheel [10] is arranged at the rear portion of described front wheel carrier [13].