Handle device

Abstract

To provide a handle device in which an upper end of a fixing piece of the handle device is connected to a folding rod, and a lower end of the fixing piece is fixedly connected to a connecting seat, the handle device being designed to further limit rotation of the connecting seat and to prevent the handle device from falling down to the left and right.SOLUTION: The handle device includes: a connecting seat and two connection rods. The connecting seat has a first rotating shaft, and a lower end of a pulling rod mechanism is attached on an outer circumference of the rotating shaft in a sleeve form. The connecting seat further has a connecting groove, two ends of the connecting groove are hinged to first ends of the two connection rods, and second ends of the two connection rods, remote from the connection groove, are respectively hinged to preset first points on both sides of a cart frame. The connecting seat is fixedly connected to a fixed piece, and an upper end of the fixed piece is configured to be connected to a preset second point at an upper part of the cart frame.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application relates to the technical field of folding carts, and more particularly to handle devices. [Background technology]

[0002] Carts provide convenience for users in their daily shopping and transportation. After use, users can fold the cart and store it. However, existing cart handles often tip over to the left or right, making it inconvenient for users to store the cart.

[0003] Therefore, how to prevent the handlebars from tipping to the left or right has become an urgent technical problem that must be solved by those skilled in the art. Summary of the Invention

[0004] The object of this application is to provide a handle device in which the upper end of the fixed piece of the handle device is connected to a folding rod and the lower end of the fixed piece is fixedly connected to a connecting seat portion, which further restricts rotation at the connecting seat portion and prevents the handle device from tipping over to the left or right.

[0005] To achieve the above object, the present application provides a handle device comprising a connecting seat and two connecting rods, the connecting seat having a first pivot shaft, a lower end of a traction rod mechanism attached to an outer periphery of the first pivot shaft in a sleeve-like manner, the connecting seat further having a connecting groove, two ends of which are hinged to first ends of the two connecting rods, and second ends of the two connecting rods remote from the connecting grooves being hinged to first predetermined locations on both sides of the cart frame, respectively, the connecting seat being fixedly connected to a fixed piece, the upper end of which is configured to be connected to a second predetermined location on the upper part of the cart frame.

[0006] The lower end of the fixed piece may be fixedly connected to an outer wall of the connecting groove portion that is farther from the first rotation axis, and the fixed piece may be perpendicular to the first rotation axis.

[0007] Preferably, a band-shaped fixing hole extending in a direction parallel to the fixing piece is defined at the upper end of the fixing piece.

[0008] Preferably, the first ends of the two connecting rods are provided with band-shaped hinge holes, and the two connecting rods are hinged to the two ends of the connecting groove portion via the band-shaped hinge holes.

[0009] The handle device may further include a limiting mechanism configured to limit the rotation angle of the traction rod mechanism.

[0010] The handle device may further include an attachment cover attached to the upper end opening of the connecting groove portion, and avoidance openings configured to receive the two connecting rods may be defined at both ends of the attachment cover.

[0011] The mounting cover may further include a side cover configured to abut against an outer wall of the connecting groove portion that is farther from the first rotation shaft.

[0012] The mounting cover may have a through hole penetrating in the thickness direction, and the fixing piece may be configured to pass through the through hole.

[0013] Another handle device provided by the present application includes a connecting seat and two connecting rods, the connecting seat having a first pivot shaft, a traction rod mechanism fixedly connected to the first pivot shaft, the connecting seat further having a connecting groove, two ends of the connecting groove hinged to first ends of the two connecting rods, second ends of the two connecting rods remote from the connecting groove hinged to first predetermined locations on both sides of the cart frame, respectively, the connecting seat is fixedly connected to a fixed piece, an upper end of which is configured to be connected to a second predetermined location on the upper part of the cart frame.

[0014] The two ends of the connecting seat are hinged to the two connecting rods, respectively. When the cart frame is folded, the two first points move toward each other, and the two connecting rods rotate around the hinge points between the two connecting rods and the connecting seat, respectively, causing the two connecting rods to move toward each other and folding the handle device. The connecting seat is fixedly connected to the fixed piece, and the angle between them remains fixed. The upper end of the fixed piece is connected to the second point, and after the cart frame is folded, the angle between the connecting seat and the cart frame remains fixed, thereby preventing the towing rod mechanism from tipping over left or right. [Brief explanation of the drawings]

[0015] In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly described below. It is clear that the drawings in the following description are only the embodiments of the present application, and those skilled in the art can obtain other drawings based on the provided drawings without creative work. [Figure 1] 1 is a schematic structural diagram of a handle device attached to a folding cart provided by the present application; [Figure 2] 1 is a schematic structural diagram of a specific embodiment of a handle device provided by the present application; [Figure 3] FIG. 3 is an exploded view of the handle device of FIG. 2. [Figure 4] 1 is a schematic structural diagram of another specific embodiment of a handle device provided by the present application; [Figure 5] FIG. 5 is an exploded view of the handle device of FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below in conjunction with the drawings of the embodiments of this application. It is clear that the embodiments described below are only some embodiments of this application, and are not all embodiments. Based on the embodiments in this application, any other embodiments obtained by those skilled in the art without creative efforts are all within the scope of protection of this application.

[0017] In order to enable those skilled in the art to better understand the solutions of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Referring to Figures 1 to 5, Figure 1 is a schematic structural diagram of a handle device provided by the present application and attached to a folding cart, Figure 2 is a schematic structural diagram of a specific embodiment of the handle device provided by the present application, Figure 3 is an exploded view of the handle device of Figure 2, Figure 4 is a schematic structural diagram of another specific embodiment of the handle device provided by the present application, and Figure 5 is an exploded view of the handle device of Figure 4.

[0019] The handle device provided by the present application has a structure shown in FIG. 2 or FIG. 4, and includes a traction rod mechanism 1, a connecting seat 2, two connecting rods 3, and a fixing piece 4.

[0020] The connecting seat portion 2 has a rotating shaft seat (first portion) and a connecting groove portion 21 (second portion), and the rotating shaft seat has a first rotating shaft arranged in a direction parallel to the connecting shaft. A first connecting sleeve 11 is provided at the lower end of the traction rod mechanism 1. The first connecting sleeve 11 extends in the left-right direction. The first connecting sleeve 11 is attached in the form of a sleeve to the outer periphery of the first rotating shaft. In other words, the first rotating shaft extends in the left-right direction within the first connecting sleeve 11 and is fixed to the rotating shaft seat. Therefore, the traction rod mechanism 1 can swing back and forth around the first rotating shaft.

[0021] The connecting groove 21 is located rearward of the pivot shaft seat. The connecting groove 21 extends in the left-right direction and is open upward (upward in the vertical direction, which will be described later) and left-right. The connecting groove 21 has a pair of outer walls. One of the pair of outer walls (the front outer wall) is located near the first pivot shaft, and the other (the rear outer wall) is located farther from the first pivot shaft than the front outer wall. The two connecting rods 3 have first ends located near the connecting groove 21 and second ends located farther from the connecting groove 21. The first ends of the two connecting rods 3 are hinged to two left-right ends of the connecting groove 21 (the right end of the pair of outer walls and the left end of the pair of outer walls), respectively. Specifically, a second pivot shaft penetrates the first ends of the two connecting rods 3 in the front-rear direction and is fixed to the two ends of the connecting groove 21, respectively. That is, the first ends of the two connecting rods 3 are pivotally supported by the second rotation shafts at the two ends of the connecting groove 21. Therefore, the two connecting rods 3 can rotate left and right around the hinge points (second rotation shafts) between the two connecting rods 3 and the connecting groove 21.

[0022] The second ends of the two connecting rods 3 are hinged to the cart frame F by second connecting sleeves 60. As shown in FIG. 1, these second connecting sleeves 60 are attached in a sleeve-like manner to the outer peripheries of the left and right columns provided at the front of the cart frame F. Each second connecting sleeve 60 has a hinge shaft (third pivot shaft) arranged in the front-rear direction. A hinge hole (shaft hole) is defined at the second end of each connecting rod 3, and the hinge shaft (third pivot shaft) is inserted into the hinge hole (shaft hole) to realize the connection between the connecting rod 3 and the cart frame F. The position of the hinge shaft (third pivot shaft) is the predetermined first position P1. In this way, the first positions P1 are provided on both sides of the lower front portion of the cart frame F. The two first positions P1 are usually distributed symmetrically on both sides of the cart frame F, and the two connecting rods 3 have the same length. The second connecting sleeve 60 is open downwards so as not to interfere with the second ends of the two connecting rods 3 when the two connecting rods 3 rotate.

[0023] The fixed piece 4 extends in the vertical direction. The lower end of the fixed piece 4 is fixedly connected to the connecting seat 2. The fixed piece 4 is located rearward relative to the traction rod mechanism 1. A folding frame is provided on the upper part of the cart frame F. The folding frame has a first X-shaped portion and a second X-shaped portion. The first X-shaped portion and the second X-shaped portion each have two folding rods 71, 72 that intersect in an X shape and are rotatably supported at the intersection. First ends of the two folding rods 71, 72 of the first X-shaped portion and first ends of the two folding rods 71, 72 of the second X-shaped portion are rotatably connected by a fourth rotation shaft. The second end of the first X-shaped folding rod 71 is pivotally supported on the left column, and the second end of the second X-shaped folding rod 71 is pivotally supported on the right column. The second end of the first X-shaped folding rod 72 is pivotally supported on a left slider mounted on the left column so as to be movable up and down, and the second end of the second X-shaped folding rod 72 is pivotally supported on a right slider mounted on the right column so as to be movable up and down. The midpoint of the folding frame is the hinge point (fourth pivot axis) of the two folding rods 71. In a specific embodiment of the present application, this midpoint is selected as the preset second point P2, and the upper end of the fixing piece 4 is connected to the second point P2. After the cart frame F is folded or unfolded, the midpoint of the folding frame is always located at the center of the front of the cart frame F, so the angle between the connecting seat part 2 and the cart frame F changes little, which also keeps the traction rod mechanism 1 close to the center line of the front of the cart frame F and makes it difficult for the traction rod mechanism 1 to tip left or right. In addition, the user can also select another position when folding or unfolding where the change in the distance ratio from the left and right sides of the cart frame F is relatively small, and the second position P2 is usually located above the connecting seat part 2.

[0024] Alternatively, the lower end of the fixed piece 4 may be fixedly connected to the center of the outer wall of the connecting groove 21 that is farther from the first rotation axis, and the fixed piece 4 may be perpendicular to the first rotation axis. The traction rod mechanism 1 may also be perpendicular to the first rotation axis, so that the fixed piece 4 and the traction rod mechanism 1 are located in the same plane. After the cart frame F is folded, the traction rod mechanism 1 is always located in the center of the front of the cart frame F under the restriction of the fixed piece 4, so that the traction rod mechanism 1 does not occupy any extra space.

[0025] During the folding process of the cart frame F, the second point P2 may undergo a first vertical displacement, and the connecting seat 2 may undergo a second vertical displacement. These two displacements are typically different. To prevent the fixing piece 4 from affecting the folding of the cart frame F, in another specific embodiment of the present application, as shown in FIGS. 4 and 5 , a strip-shaped fixing hole 41 is defined at the upper end of the fixing piece 4, and the strip-shaped fixing hole 41 extends parallel to the fixing piece 4 (vertically). The fixing piece is connected to the second point P2 through the strip-shaped fixing hole 41, and the vertical length of the strip-shaped fixing hole 41 is greater than the difference between the first and second displacements. Therefore, the strip-shaped fixing hole 41 can prevent the fixing piece 4 from affecting the folding process of the cart frame F. The fixing hole 41 does not need to be strip-shaped; it can be a circular or regular polygonal hole.

[0026] As shown in FIG. 3 , a band-shaped hinge hole 31 (axial hole) is provided at the first end of each connecting rod 3 connected to the connecting groove 21, parallel to the connecting rod 3. In other words, the hinge hole 31 extends along the longitudinal direction of the connecting rod 3. The length (longitudinal dimension) of the band-shaped hinge hole 31, through which the connecting rod 3 may be hinged to the connecting groove 21 via the band-shaped hinge hole 31, is greater than the difference between the first and second displacements. During the folding process of the cart frame F, the fixing piece 4 moves the connecting seat 2 and moves within the band-shaped hinge hole 31, thereby preventing the fixing piece 4 from affecting the folding process of the cart frame F. Note that the hinge hole 31 does not need to be band-shaped and can be a hole with a perfect circle or regular polygon.

[0027] To facilitate easy towing by the user, the traction rod mechanism 1 may not normally need to rotate at an excessively large angle. For this reason, the handle device may be provided with a limiting mechanism configured to limit the rotation angle of the traction rod mechanism 1. As shown in FIG. 1 , a limiting protrusion 11a is provided on the outer wall of the first connecting sleeve 11 at the lower end of the traction rod mechanism 1, and the limiting protrusion 11a can abut against the connecting seat 2 to limit the rotation of the traction rod mechanism 1. Alternatively, the user may use a limiting mechanism having a different structure, but the structure is not limited herein.

[0028] In order to prevent foreign matter from entering the connecting groove 21, the handle device is provided with an attachment cover 5, which is attached to the upper end opening of the connecting groove 21 to prevent foreign matter from entering the connecting groove 21. Avoidance openings 51 are defined on both ends of the attachment cover 5, and after the cart frame F is folded, the two connecting rods 3 can enter the two avoidance openings 51.

[0029] 3, the mounting cover 5 further includes a side cover 52 bent downward, and the side cover 52 is configured to abut against the outer wall of the connecting groove portion 21 that is farther from the first pivot shaft. A fixing groove is defined in the edge of the side cover 52, and the mounting cover 5 is fixed to the connecting groove portion 21 by fastening this fixing groove to the outer wall of the connecting groove portion 21 that is farther from the first pivot shaft.

[0030] Furthermore, the upper end surface of the mounting cover 5 has through holes 53 that penetrate in the thickness direction (vertical direction), and the fixing pieces 4 pass through the through holes 53. Therefore, the mounting cover 5 can protect the connecting portions between the fixing pieces 4 and the connecting seat portions 2.

[0031] In this embodiment, the fixed piece 4 is provided on the handle device, and is fixedly connected to the connecting seat 2, with the upper end of the fixed piece 4 connected to a second point P2 on the cart frame F. When the cart frame F is folded, the two first points P1 approach each other, and the two connecting rods 3 rotate around hinge points (second rotation axes) between the two connecting rods 3 and the connecting seat 2, thereby bringing the two connecting rods 3 closer to each other and folding the handle device. The connecting seat 2 is fixedly connected to the fixed piece 4, and the angle between them remains fixed. After the cart frame F is folded, the fixed piece 4 prevents the connecting seat 2 from rotating, thereby preventing the traction rod mechanism 1 from swinging left and right.

[0032] It should be noted that the terms "first," "second," etc. used in this specification are merely used to distinguish one element from another, and do not require or imply that there is any actual relationship or order between these elements.

[0033] The handle device according to the present application has been described in detail above. The principles and embodiments of the present application have been illustrated by specific examples in this specification. The explanation of the above examples is intended only to facilitate understanding of the method and spirit of the present application. It should be noted that those skilled in the art may make improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0034] The design of the first part of the connecting seat part of the present invention can be modified arbitrarily as long as it supports the lower ends of the traction rod mechanisms so as to be rotatable in the front-rear direction or is fixed to the lower ends of the traction rod mechanisms. For example, the traction rod mechanism may have a shaft hole penetrating its lower end in the left-right direction, and the first part of the connecting seat part may have a first rotation shaft inserted into the shaft hole. Alternatively, the traction rod mechanism may have a first rotation shaft provided at its lower end and extending in the left-right direction, and the first part of the connecting seat part may have at least one shaft hole for supporting the first rotation shaft. The design of both ends of the second part of the connecting seat part of the present invention can be modified arbitrarily as long as it supports the first ends of the two connecting rods so as to be rotatable in the left-right direction. For example, the second part of the connecting seat part may be a wall extending in the left-right direction, and the second rotation shaft may penetrate the first ends of the two connecting rods 3 in the front-rear direction, respectively, and be fixed to both ends of the connecting groove part 21. Alternatively, the reverse may be possible. [Explanation of symbols]

[0035] The symbols in Figures 1 to 5 are as follows: 1. Traction rod mechanism 2 Connecting seat 3 Connecting rod 4 Fixed piece 5 Mounting cover 11 First connecting sleeve 11a Limiting protrusion 21 Connecting groove 31 Belt-shaped hinge hole 41 Belt fixing hole 51 Evasion opening 52 Side cover 53 Through hole 60 Second connecting sleeve 71, 72 Folding rod P1 1st Place P2 2nd Place

Claims

1. The device includes a connecting seat and two connecting rods. The connecting seat has a first pivot shaft, a lower end of a traction rod mechanism is attached in a sleeve-like manner to an outer periphery of the first rotation shaft; The connecting seat further has a connecting groove, two ends of the connecting groove are hinged to the first ends of the two connecting rods; The second ends of the two connecting rods that are farther from the connecting grooves are hinged to predetermined first locations on both sides of the cart frame, respectively; The connecting seat is fixedly connected to the fixing piece, The handle device is configured so that the upper end of the fixed piece is connected to a second predetermined location on the upper part of the cart frame.

2. The handle device according to claim 1, a lower end of the fixed piece is fixedly connected to an outer wall of the connecting groove portion that is farther from the first pivot shaft, The fixed piece is perpendicular to the first rotation axis.

3. The handle device according to claim 2, A handle device, wherein a band-shaped fixing hole extending in a direction parallel to the fixing piece is defined at the upper end of the fixing piece.

4. The handle device according to claim 2, The first ends of the two connecting rods are provided with band-shaped hinge holes, The two connecting rods are hinged to the two ends of the connecting groove portion through the band-shaped hinge holes.

5. The handle device according to claim 1, The handle device further comprises a limiting mechanism configured to limit a rotation angle of the traction rod mechanism.

6. The handle device according to any one of claims 1 to 5, The connecting groove further includes an attachment cover attached to an upper end opening of the connecting groove, The handle device has avoidance openings defined at opposite ends of the mounting cover, the avoidance openings being configured to receive the two connecting rods.

7. The handle device according to claim 6, The handle device, wherein the mounting cover further includes a side cover configured to abut against an outer wall of the connecting groove portion that is farther from the first pivot shaft.

8. The handle device according to claim 6, The mounting cover has a through hole penetrating in a thickness direction, The fixing piece is configured to pass through the through hole.

9. a traction rod mechanism; A connecting seat portion; Two connecting rods; and a fixing piece, the connecting seat portion has a first portion and a second portion located rearward of the first portion and having both ends in the left-right direction, the first portion pivotally supports a lower end of the traction rod mechanism so as to be rotatable in the front-rear direction or is fixed to the lower end of the traction rod mechanism, Both end portions of the second portion pivotally support the first ends of the two connecting rods so as to be rotatable in the left-right direction, second ends of the two connecting rods opposite to the first ends are pivotally supported at predetermined first locations on both sides of a lower front portion of the cart frame so as to be rotatable in the left-right direction; A handle device in which the fixed piece is fixed to the connecting seat and the upper end of the fixed piece is connected to a second predetermined location in the center of the upper front part of the cart frame.

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