CN221090839U - Steering mechanism of trolley - Google Patents
Steering mechanism of trolley Download PDFInfo
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- CN221090839U CN221090839U CN202323458088.5U CN202323458088U CN221090839U CN 221090839 U CN221090839 U CN 221090839U CN 202323458088 U CN202323458088 U CN 202323458088U CN 221090839 U CN221090839 U CN 221090839U
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- frame body
- connecting unit
- cart
- steering mechanism
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- 238000010586 diagram Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a steering mechanism of a trolley. Including the shallow frame body, including on the shallow frame body: the handle rod is rotatably arranged on the trolley frame body, and the lower end of the handle rod is provided with a first connecting unit which rotates synchronously with the handle rod; the travelling wheel units are rotatably arranged on the trolley frame body, and are fixedly connected with second connecting units; and one end of the third connecting unit is rotationally connected with the first connecting unit, and the other end of the third connecting unit is rotationally connected with the second connecting unit, so that the travelling wheel unit rotates along with the rotation of the handle rod. The utility model provides the handle bar and the left-right steering function of the front wheels of the cart, and the front wheels can be steered along with the left-right steering of the handle bar through the connecting rod structure, so that the operation is more convenient, the structure is simple, and the maintenance is convenient.
Description
Technical Field
The utility model relates to the technical field of outdoor carts, in particular to a cart steering mechanism.
Background
The outdoor trolley is a tool which is widely used at present and is convenient for people to use in daily life, and can be used in partial construction operation.
The outdoor trolley is deeply favored by users because of the foldable and unfolded storage space, the existing common outdoor trolley is usually provided with a pull rod capable of being turned up and down at the front end of the existing outdoor trolley, and wheels at the bottom of the existing outdoor trolley are designed into universal wheels, such as patent document CN208036335U.
In practical use, the outdoor trolley is generally used for storing more articles, and some users can also be used for riding children, so that the outdoor trolley has larger carrying capacity when in use. The pull rod can only turn up and down, so that the existing outdoor trolley is difficult to turn left and right when in use, and therefore, the application is put forward by the applicant.
Disclosure of utility model
Aiming at the defects in the prior art, the utility model provides a trolley steering mechanism which can more conveniently steer the trolley and has higher steering accuracy.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
the utility model provides a shallow steering mechanism, includes the shallow frame body, including on the shallow frame body:
The handle rod is rotatably arranged on the trolley frame body, and the lower end of the handle rod is provided with a first connecting unit which rotates synchronously with the handle rod;
the travelling wheel units are rotatably arranged on the trolley frame body, and are fixedly connected with second connecting units; and
And one end of the third connecting unit is rotationally connected with the first connecting unit, and the other end of the third connecting unit is rotationally connected with the second connecting unit, so that the travelling wheel unit rotates along with the rotation of the handle bar.
In the above scheme, preferably, the front end of the cart frame body comprises an extension head, a rotating shaft is rotatably arranged on the extension head, a connecting frame is fixedly connected to the upper end of the rotating shaft, the lower end of the rotating shaft is fixedly connected with the first connecting unit, and the handle bar is rotatably arranged on the connecting frame.
In the above aspect, preferably, a torsion spring is disposed between the handle bar and the rotating shaft or between the handle bar and the connecting frame;
the first connecting unit is arranged below the cart frame body, and the inner end of the first connecting unit extends into the orthographic projection range of the cart frame body.
In the above aspect, preferably, the traveling wheel unit includes a traveling wheel frame and traveling wheels rotatably disposed on the traveling wheel frame, and the traveling wheel frame is rotatably disposed on the cart frame.
In the above scheme, preferably, the front end of the cart frame body comprises a plurality of hollow sleeves, and the upper part of the walking wheel frame body comprises a connecting column rotationally connected with the sleeves.
In the above scheme, preferably, a notch is circumferentially formed at the upper end of the connecting column, and a clamp spring matched with the notch for longitudinally limiting the connecting column is arranged on the sleeve.
In the above aspect, preferably, the shape of the connecting post and the shape of the hollow cavity inside the sleeve are both cylindrical.
In the above aspect, preferably, at least two travelling wheel units are disposed at left and right of the front end of the cart frame, the two travelling wheel units are disposed at two sides of the first connection unit, and the third connection units corresponding to the travelling wheel units are respectively connected to left and right ends of the inner end of the first connection unit in a rotating manner.
In the above aspect, preferably, a slot is formed in a side wall of the second connection unit, the end portion of one end of the third connection unit rotatably connected to the second connection unit includes a folded edge matched with the slot, and the slot is disposed on a moving path of the folded edge.
In the above aspect, preferably, a slot is formed in a side wall of the second connection unit, and the end portion of the third connection unit, which is rotatably connected to the second connection unit, includes a folded edge that is matched with the slot, and the slot is arranged on a moving path of the folded edge;
The two second connecting units are provided with the slots at least on the outer side walls of the two second connecting units.
The beneficial effects of the utility model are as follows:
The utility model provides the handle bar and the left-right steering function of the front wheels of the cart, and the front wheels can be steered along with the left-right steering of the handle bar through the connecting rod structure, so that the operation is more convenient, the structure is simple, and the maintenance is convenient.
Drawings
FIG. 1 is a schematic diagram of the present utility model.
Fig. 2 is an enlarged schematic view at D in fig. 1.
Fig. 3 is a schematic view showing the installation state of each link mechanism of the present utility model.
Fig. 4 is a schematic diagram showing the state of cooperation between each link mechanism and the traveling wheel frame body according to the present utility model.
Fig. 5 is a schematic diagram illustrating a mating state of the second connecting unit and the third connecting unit according to the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and detailed description:
Referring to fig. 1-5, a steering mechanism of a cart comprises a cart frame body 1, wherein the front end of the cart frame body 1 comprises an extension head 11 and a plurality of sleeves 12, alternatively, the extension head 11 and the sleeves 12 are integrally formed with the cart frame body 1 or the extension head 11 and the sleeves 12 are welded and fixed on the cart frame body 1, and the number of the sleeves 12 can be two and respectively arranged at the left side and the right side of the extension head 11.
The extension head 11 is used for being matched with the handle bar 2, and the sleeve 12 is used for being matched with the travelling wheel unit.
In this embodiment, the extension head 11 and the handle bar 2 are rotatably provided with a rotating shaft 13, alternatively, the extension head 11 is provided with a hole in the longitudinal direction, the rotating shaft 13 is disposed at the hole in a penetrating manner and is in a form-fitting manner with the extension head 11, and in order to prevent the rotating shaft 13 from falling off, the upper end and the lower end of the rotating shaft 13 may be provided with connecting pieces for limiting the longitudinal direction of the rotating shaft 13 on the extension head 11, which may refer to the conventional design method.
After the rotating shaft 13 is mounted on the extension head 11, the upper end of the rotating shaft is fixedly connected with the connecting frame 14, the connecting frame 14 can be U-shaped, the lower end part 21 of the handle bar 2 is rotatably connected to the connecting frame 14, for example, the lower end part 21 of the handle bar 2 comprises two ends which transversely extend, one end is rotatably connected to one longitudinal wall of the connecting frame 14, and the other end is rotatably connected to the other longitudinal wall of the connecting frame 14. After such design, the handle bar 2 can be provided with the function of turning up and down, and can be turned up to be buckled on the positioning buckle on the cart when not in use (the existing design can be referred to), and can be turned down to save more labor when in use.
In order to make the handle bar 2 turn up more labor-saving, in this embodiment, a torsion spring is disposed between the handle bar 2 and the rotating shaft 13 or between the handle bar 2 and the connecting frame 14, and after the user releases his or her hand, the force for turning up the handle bar 2 can be provided by the torsion spring.
In this embodiment, the lower end of the rotating shaft 13 is fixedly connected with the first connecting unit 3, the first connecting unit 3 is disposed below the cart frame body 1, and the inner end thereof extends into the orthographic projection range of the cart frame body 1, so that the inner end thereof is located below the cart storage bag 4, and the whole structure looks more concise.
Because the lower end of the rotating shaft 13 is fixedly connected with the first connecting unit 3, and the upper end of the rotating shaft is fixedly connected with the connecting frame 14, the three structures can synchronously act, and because the handle bar 2 can be vertically overturned and is rotatably arranged on the connecting frame 14, the first connecting unit 3 can rotate along with the handle bar 2 when a user rotates the handle bar 2 left and right.
As described above, the traveling wheel unit is matched with the sleeve 12, specifically, the traveling wheel unit includes a traveling wheel frame 51 and a traveling wheel 52 rotatably disposed on the traveling wheel frame 51, the upper portion of the traveling wheel frame 51 includes a connecting post 53, and the connecting post 53 may be cylindrical, and may be integrally formed with the traveling wheel frame 51 or welded and fixed on the top surface of the traveling wheel frame 51.
In this embodiment, the sleeve 12 includes a hollow cavity adapted to the connecting post 53, and the hollow cavity may also be cylindrical, where the connecting post 53 penetrates into the hollow cavity from bottom to top, so that the travelling wheel unit can rotate relative to the sleeve 12.
In order to prevent the connection post 53 from falling from the sleeve 12, in this embodiment, a notch 531 is circumferentially formed on the connection post 53, and a clamp spring matched with the notch 531 to longitudinally limit the connection post 53 is disposed on the sleeve 12. The upper end and the lower end of the sleeve 12 are the same, the hollow cavity is a through hole longitudinally penetrating the sleeve 12, the snap spring is arranged at the upper end of the sleeve 12, and the outer diameter of the snap spring is larger than the aperture of the upper end opening of the hollow cavity, so that longitudinal limit is formed. For aesthetic purposes, a cover 15 which is matched with the shape of the sleeve 12 and used for covering all parts of the upper end of the sleeve can be clamped at the upper end of the sleeve 12.
As shown in fig. 3-5, two travelling wheel units are distributed left and right at the front end of the cart frame body 1, a travelling wheel frame body 51 on each travelling wheel unit is fixedly connected with a corresponding second connecting unit 6, the inner ends of the second connecting units 6 are consistent with the first connecting units 3, and extend towards the inner side of the cart frame body 1, and as one option, the two second connecting units 6 arranged left and right are arranged in parallel with the first connecting units 3.
Corresponding third connecting units 7 are respectively arranged between the second connecting unit 6 positioned at the left side and the first connecting unit 3 and between the second connecting unit 6 positioned at the right side and the first connecting unit 3, one end of the third connecting unit 7 is rotationally connected with the first connecting unit 3, the other end is rotationally connected with the second connecting unit 6, and specifically, the width of the first connecting unit 3 can be larger than the width of the second connecting unit 6, so that the left end and the right end of the inner end can provide enough space for being connected with the corresponding third connecting unit 7.
By means of the connecting rod member formed by the first connecting unit 3, the second connecting unit 6 and the third connecting unit 7, when the handle bar 2 rotates left and right, the two travelling wheels 52 can rotate left and right along with the handle bar 2, and a user can quickly control the steering of the cart by only controlling the handle bar 2, and compared with the uncontrollability of universal wheels, the steering direction control in this way is more accurate.
In order to control the steering range of the cart and avoid the difficulty in pulling the cart due to the overlarge steering range, in this embodiment, a slot 61 is formed on the side wall of the second connecting unit 6, a folded edge 71 matched with the slot 61 is formed at one end part of the third connecting unit 7 rotationally connected to the second connecting unit 6, the folded edge 71 acts along with the action of the third connecting unit 7, the slot 61 is located on the moving path of the folded edge 71, and when the folded edge 71 is located in the slot 61 and the inner wall of the folded edge abuts against the inner wall of the slot 61, the travelling wheel 52 is in the state of the largest rotation angle.
In this embodiment, the two second connecting units 6 are provided with slots 61 on at least the outer side walls thereof, the flanges 71 can be formed by bending the outer ends of the third connecting units 7, or additionally welded and fixed by fastening means, the maximum rotation range of the left turn of the travelling wheel 52 is defined by one flange 71 and the corresponding slot 61, and the maximum rotation range of the right turn of the travelling wheel 52 is defined by the other flange 71 and the corresponding slot 61, however, if the second connecting units 6 are fixed on the travelling wheel frame 51 by welding or fastening means, the left and right side walls of the second connecting units 6 can be provided with corresponding slots, so as to form an immobilization structure, and any second connecting unit 6 can be adapted to any travelling wheel frame 51 without considering the direction of assembly when producing the second connecting units 6.
For the running fit between the first connecting unit 3 and the third connecting unit 7 and the running fit between the second connecting unit 6 and the third connecting unit 7, through holes are formed in corresponding positions of the first connecting unit 3, the second connecting unit 6 and the third connecting unit 7, and the corresponding two components are connected in a running mode through pin shafts or bolts passing through the corresponding through holes.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The utility model provides a shallow steering mechanism, includes pushing away the frame body, its characterized in that: the cart frame body comprises:
The handle rod is rotatably arranged on the trolley frame body, and the lower end of the handle rod is provided with a first connecting unit which rotates synchronously with the handle rod;
the travelling wheel units are rotatably arranged on the trolley frame body, and are fixedly connected with second connecting units; and
And one end of the third connecting unit is rotationally connected with the first connecting unit, and the other end of the third connecting unit is rotationally connected with the second connecting unit, so that the travelling wheel unit rotates along with the rotation of the handle bar.
2. A cart steering mechanism according to claim 1, wherein: the front end of the trolley frame body comprises an extension head, a rotating shaft is rotatably arranged on the extension head, a connecting frame is fixedly connected to the upper end of the rotating shaft, the lower end of the rotating shaft is fixedly connected with the first connecting unit, and the handle rod is rotatably arranged on the connecting frame.
3. A cart steering mechanism according to claim 2, wherein: a torsion spring is arranged between the handle bar and the rotating shaft or between the handle bar and the connecting frame;
the first connecting unit is arranged below the cart frame body, and the inner end of the first connecting unit extends into the orthographic projection range of the cart frame body.
4. A cart steering mechanism according to claim 1, wherein: the travelling wheel unit comprises a travelling wheel frame body and travelling wheels rotatably arranged on the travelling wheel frame body, and the travelling wheel frame body is rotatably arranged on the cart frame body.
5. A cart steering mechanism according to claim 4, wherein: the front end of the trolley frame body comprises a plurality of hollow sleeves, and the upper part of the walking wheel frame body comprises a connecting column which is rotationally connected with the sleeves.
6. A cart steering mechanism according to claim 5, wherein: the upper end of the connecting column is circumferentially provided with a notch, and the sleeve is provided with a clamp spring matched with the notch for longitudinally limiting the connecting column.
7. A trolley steering mechanism as claimed in claim 5 or 6, wherein: the shape of the connecting column and the shape of the hollow cavity inside the sleeve are cylindrical.
8. A trolley steering mechanism as claimed in any one of claims 1 to 6, wherein: at least two travelling wheel units are arranged at the left and right of the front end of the trolley frame body, the two travelling wheel units are respectively arranged at two sides of the first connecting unit, and the third connecting units corresponding to the travelling wheel units are respectively connected with the left and right ends of the inner end of the first connecting unit in a rotating mode.
9. A trolley steering mechanism as claimed in any one of claims 4 to 6, wherein: the side wall of the second connecting unit is provided with a slot, one end part of the third connecting unit, which is rotationally connected with the second connecting unit, comprises a folded edge matched with the slot, and the slot is arranged on a movable path of the folded edge.
10. A cart steering mechanism according to claim 8, wherein: a slot is formed in the side wall of the second connecting unit, one end part of the third connecting unit, which is rotatably connected with the second connecting unit, comprises a folded edge matched with the slot, and the slot is arranged on a movable path of the folded edge;
The two second connecting units are provided with the slots at least on the outer side walls of the two second connecting units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323458088.5U CN221090839U (en) | 2023-12-19 | 2023-12-19 | Steering mechanism of trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323458088.5U CN221090839U (en) | 2023-12-19 | 2023-12-19 | Steering mechanism of trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221090839U true CN221090839U (en) | 2024-06-07 |
Family
ID=91303053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323458088.5U Active CN221090839U (en) | 2023-12-19 | 2023-12-19 | Steering mechanism of trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221090839U (en) |
-
2023
- 2023-12-19 CN CN202323458088.5U patent/CN221090839U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |