Trolley rotating joint

Abstract

The utility model discloses a rotating joint of a trolley, and belongs to the technical field of children products. The bicycle frame comprises a bicycle frame clamping ring and a handlebar connecting piece. The device further comprises a key and a clamping wheel. The handle connecting piece, the clamping wheel and the frame clamping ring are all located on the same central axis, the handle connecting piece and the frame clamping ring are each provided with a circular groove, and the two circular grooves directly face each other to form a circular through cavity for the clamping wheel to move; the side wall of the clamping wheel is divided into two parts, the circumference of one part is a smooth curved surface, and protrusions are arranged on the circumference of the other part. Grooves matched with the protrusions are formed in the inner walls of the two circular grooves. A spring is arranged between the bottom of one circular groove and the clamping wheel; a through hole penetrating to the circular groove is formed in the handle connecting piece, and the key is located in the through hole and can move along the central axis. According to the utility model, the adjustment between the handle and the frame is realized, and the adjustable positions are multiple.

Description

Technical Field

[0001] The utility model relates to the technical field of children's products, in particular to a rotating joint of a stroller. Background Art

[0002] Many children's products include multiple rods that rotate with each other, especially the connection between the handlebars and the frame, which can adjust the position of the handlebars. However, the joints where the handlebars are adjusted in the existing technology are relatively complex, and there are many linkage mechanisms when folding. Utility Model Content

[0003] The purpose of the present invention is to avoid the deficiencies in the above-mentioned background technology and to provide a trolley rotating joint for realizing adjustment between the handle and the frame, with multiple adjustable positions.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A trolley rotating joint includes a frame clamp and a handle connecting piece; a button and a clamping wheel; the handle connecting piece, the clamping wheel and the frame clamp are all located on the same central axis, wherein the handle connecting piece and the frame clamp are both provided with circular grooves, and the two circular grooves face each other to form a circular through cavity for displacement of the clamping wheel;

[0006] The side wall of the clamping wheel is divided into two parts, one of which has a smooth curved surface and the other has a protrusion. The inner walls of the two circular grooves are provided with grooves that match the protrusions. A spring is provided between the bottom of one of the circular grooves and the clamping wheel.

[0007] The handle connecting piece is provided with a through hole which passes through to the circular groove. The button is located in the through hole and can move along the central axis.

[0008] Furthermore, the protrusions form gear teeth in an array along the circumference thereof, and the grooves form tooth grooves in an array along the circumference of the inner wall of the circular groove where they are located, and the gear teeth and the tooth grooves cooperate with each other.

[0009] Furthermore, the spring is a compression spring, which is located in the circular groove of the frame clamping ring, so that the clamping wheel has a tendency to move toward the other circular groove.

[0010] Furthermore, at least one support column is provided on the connection side of the button, and the support column and the button are designed as an integrated whole; the support column and the through hole correspond one to one, and the support column passes through the corresponding through hole and rests on the clamping wheel.

[0011] Furthermore, the end of the support column is provided with a bend for preventing it from falling off, and the bend is provided with a smooth inclined surface for easy embedding.

[0012] Furthermore, a pin is provided at the center of the circular groove connected to the handle, and the pin passes through the clamping wheel.

[0013] Compared with the background technology, the present invention has the following beneficial effects:

[0014] 1) The utility model fixes the handlebar connector and the frame clamp through a clamping wheel. Pressing a button unlocks the handlebar connector and the frame clamp, thereby achieving relative rotation between the two.

[0015] 2) The utility model has a plurality of protrusions and circular grooves on the clamping wheel, which can have multiple rotation positions, simple structure, simple operation and convenient pushing and pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the clamping wheel in an embodiment of the present utility model.

[0018] Figure 3 This is a simplified diagram of the key structure of an embodiment of the utility model;

[0019] Figure 4 It is a simplified structural diagram of a frame clamping ring according to an embodiment of the present utility model.

[0020] Figure 5 This is a schematic diagram of the inner structure of the handlebar connector according to an embodiment of the present utility model.

[0021] Figure 6 This is a schematic diagram of the outer structure of the handlebar connector according to an embodiment of the present utility model.

[0022] In the figure: 1, button; 2, pin; 3, frame clamp; 4, clamp wheel; 5, handlebar connector; 4-1, protrusion, 4-2, smooth curved surface, 1-1, support column, 1-2, bend, 1-3, smooth inclined surface, 3-1, groove, 5-1, groove, 5-2, through hole, 5-3, button mounting position, 6, spring. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1 to 6 This embodiment includes a frame clamp and a handlebar connector; it is characterized in that it also includes a button and a clamping wheel; the handlebar connector, the clamping wheel and the frame clamp are all located on the same central axis, wherein the handlebar connector and the frame clamp are both provided with circular grooves, and the two circular grooves are opposite to form a circular through cavity for the displacement of the clamping wheel;

[0025] The side wall of the clamping wheel is divided into two parts, one of which has a smooth curved surface and the other has a protrusion. The inner walls of the two circular grooves are provided with grooves that match the protrusions. A spring is provided between the bottom of one of the circular grooves and the clamping wheel.

[0026] The handle connector is provided with a through hole extending through the circular groove, and the button is located in the through hole and can move along the central axis;

[0027] At least one post is provided on the connection side of the button, and the post and the button are designed as an integrated whole; the post and the through hole correspond one to one, and the post passes through the corresponding through hole and abuts on the clamping wheel;

[0028] The end of the support column is provided with a bend for preventing slippage, and the bend is provided with a smooth inclined surface for easy insertion. Relying on the smooth inclined surface of the bend, the key is pressed into the key installation position. When the smooth inclined surface slides, the support column moves toward the middle position due to its own elasticity. After passing through the through hole, the bend rebounds, and the stepped surface of the bend is stuck on the other side of the through hole to prevent slippage. Pressing the key again will also allow the key to move along the through hole, applying pressure to the clamping wheel, causing it to move horizontally, so that the protrusion on the clamping wheel disengages from the groove on the handle connector, achieving unlocking. At this time, after rotating the handle connector to the appropriate position, release the key, and the clamping wheel rebounds to achieve locking.

[0029] The protrusions form gear teeth along their circumference, and the grooves form tooth grooves along the circumference of the inner wall of the circular groove. The teeth and tooth grooves cooperate with each other. The arrangement of the teeth and tooth grooves enables it to have multiple rotation positions, and can be adjusted to a suitable angle whether it is pushed or pulled.

[0030] The spring is a compression spring located in a circular groove of the frame's clamping ring, causing the clamping wheel to tend to move toward the other circular groove. The spring can also be a tension spring located in a circular groove of the handlebar connector, causing the wheel to tend to move toward the handlebar connector's circular groove. A pin is provided in the center of the handlebar connector's circular groove, which passes through the clamping wheel.

Claims

1. A trolley rotating joint, comprising a frame clamp and a handle connector; characterized in that: The handlebar connector, the clamping wheel and the frame clamping ring are all located on the same central axis, wherein the handlebar connector and the frame clamping ring are both provided with circular grooves, and the two circular grooves are opposite to form a circular through cavity for the displacement of the clamping wheel; The side wall of the clamping wheel is divided into two parts, one part has a smooth curved surface on the circumference, and the other part has a protrusion on the circumference; the inner walls of the two circular grooves are provided with grooves that match the protrusions; a spring is provided between the bottom of one of the circular grooves and the clamping wheel; The handle connector is provided with a through hole extending through the circular groove, and the button is located in the through hole and can move along the central axis; At least one post is provided on the connection side of the button, and the post and the button are designed as an integrated whole; the post and the through hole correspond one to one, and the post passes through the corresponding through hole and abuts on the clamping wheel; The end of the support column is provided with a bend for preventing it from falling off, and the bend is provided with a smooth inclined surface for easy embedding.

2. A trolley rotation joint according to claim 1, characterized in that: The protrusions form gear teeth along the circumference of the protrusions, and the grooves form tooth grooves along the circumference of the inner wall of the circular groove, and the gear teeth and the tooth grooves cooperate with each other.

3. A trolley rotation joint according to claim 1, characterized in that: The spring is a compression spring, which is located in the circular groove of the frame clamping ring, so that the clamping wheel has a tendency to move toward another circular groove.

4. A trolley rotation joint according to claim 1, characterized in that: A pin is provided at the center of the circular groove connected to the handle, and the pin passes through the clamping wheel.

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