Rotating device of trolley pull rod and trolley with rotating device

Abstract

The utility model discloses a rotating device of a trolley pull rod and a trolley applying the rotating device. The rotating device comprises a first rotating piece and a second rotating piece, the first rotating piece is mounted at the bottom of the pull rod; the second rotating part is mounted on the vehicle body; a rotating groove is formed in the second rotating part; the first rotating piece is provided with a rotating end which extends into the rotating groove and is rotationally connected with the rotating groove; the first rotating piece is also provided with a first inclined surface and a first clamping and limiting part; the second rotating piece is provided with a second inclined face and a second clamping and limiting part in a matched mode. In the process that the first rotating piece rotates around the second rotating piece, the first inclined face and the second inclined face can abut against each other or be far away from each other, and the first clamping and limiting part and the second clamping and limiting part can be clamped and limited or separated from each other. The device is simple in structure and convenient to install; the pull rod can be vertically pushed, so that the trolley is kept in a stable and labor-saving moving state on the flat ground, the space utilization rate is high during storage, and the trolley has great economic value and market prospect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of luggage, especially relates to a trolley capable of loading luggage and a trolley pull rod. BACKGROUND

[0002] With the continuous improvement of people's living standards, material needs are also diversified. At present, a trolley with a pull rod appears on the market, which comprises a pull rod and a trolley body. The trolley body is installed with rollers below and can be installed with a box body or a bag body above, which is used for transporting goods or pets. The pull rod is installed on one side of the trolley body and can be telescopic and rotating. The trolley body also has the function of folding and storing. For example, patent No. CN201921539533.1, patent name "Pull rod device capable of telescoping in pull rod trolley body" discloses a trolley structure, which comprises a handle, a pull rod, a pull rod trolley body and universal wheels. One end of the pull rod is connected with the handle, and the other end of the pull rod is connected with the pull rod trolley body. The handle is provided with a button device. The four corners of the pull rod trolley body are provided with fixed connection seats. The fixed connection seats are provided with universal wheels below. The pull rod comprises an inner tube and an outer tube. The inner tube is nested in the outer tube. The inner tube and the outer tube are provided with a telescopic pull rod device. The telescopic pull rod device can realize the extension or contraction state of the two tubes. At the same time, the inner tube and the outer tube can realize the locking or unlocking state by controlling the button device. The pull rod and the pull rod trolley body are provided with a rotating device. When stored, it can be stored below the trolley body. However, the structure of this trolley is still relatively complex, and the installation and storage of the pull rod are not simple enough. SUMMARY

[0003] The utility model aims at providing a trolley pull rod rotating device with simple structure and convenient installation to solve the problems in the above background technology. The utility model also aims at providing a trolley applying the above trolley pull rod rotating device.

[0004] The utility model discloses a trolley pull rod rotating device, which comprises a first rotating part installed at the bottom of the pull rod and a second rotating part installed on the trolley body.

[0005] A trolley pull rod rotating device, which comprises a first rotating part installed at the bottom of the pull rod and a second rotating part installed on the trolley body. The second rotating part is provided with a rotating groove. The first rotating part is provided with a rotating end which extends into the rotating groove and is rotationally connected with the rotating groove. The first rotating part is also provided with a first inclined surface and a first clamping limiting part. The second rotating part is also provided with a second inclined surface and a second clamping limiting part. During the rotation of the first rotating part around the second rotating part, the first inclined surface and the second inclined surface can be close to each other or away from each other, and the first clamping limiting part and the second clamping limiting part can be clamped with each other or separated from each other. When the first inclined surface and the second inclined surface are close to each other and the first clamping limiting part and the second clamping limiting part are clamped with each other, the pull rod and the trolley body are in a pushable state.

[0006] Preferably, the first rotating member is provided with a third inclined surface; the second rotating member is provided with a fourth inclined surface; when the pull rod drives the first rotating member to rotate around the second rotating member to the bottom of the vehicle body and tends to be parallel to the bottom of the vehicle body, the pull rod is in a storage state, and the third inclined surface and the fourth inclined surface abut against each other.

[0007] Preferably, the second rotating member is in a whole "V" shape, comprising a connecting section and a hinged section; the connecting section is fixedly connected with the vehicle body; the hinged section is inclined downward relative to the connecting section; the rotating groove is arranged in the hinged section; the second inclined surface and the fourth inclined surface are arranged on the front side and the rear side of the hinged section respectively.

[0008] Preferably, the first clamping part comprises a protrusion arranged on the side wall surface of the rotating end; the second clamping part comprises a clamping groove arranged on the inner side wall of the rotating groove and matched with the protrusion.

[0009] Preferably, the number of the clamping grooves is at least one, and when the protrusion is clamped into one of the clamping grooves, the first inclined surface and the second inclined surface abut against each other.

[0010] Preferably, the clamping groove is provided with a guide inclined surface on the side where the protrusion is clamped in, so as to facilitate clamping and unclamping; the shape of the protrusion is matched with the shape of the clamping groove.

[0011] Preferably, the first clamping part comprises a clamping groove arranged on the rotating end; the second clamping part comprises a clamping hook arranged in the rotating groove correspondingly; the clamping hook can extend into the clamping groove to clamp or separate from the clamping groove.

[0012] Preferably, the clamping groove and the clamping hook matched with the clamping groove are further arranged; the clamping groove is arranged on the rotating end, and the clamping hook is arranged in the rotating groove; during the rotation of the first rotating member, the clamping hook can extend into the clamping groove to clamp or separate from the clamping groove.

[0013] Preferably, the first inclined surface and the third inclined surface are arranged on the end of the rotating end away from the vehicle body; the first inclined surface and the third inclined surface are in a perpendicular relationship, and the first inclined surface and the third inclined surface intersect, and the intersection is connected through an arc surface.

[0014] The utility model discloses still disclose a kind of cart, including the rotating device of the cart pull rod described above.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The pull rod can realize precise 90° upright pushing, so that the bag can keep a stable and labor-saving moving state on the flat ground, and is suitable for quickly shuttling in various spacious spaces; the pull rod can be freely switched between 0° and 270°, and when the pull rod is obliquely pulled, the labor saving and the controllability can be ingeniously balanced, and the pull rod performs well when coping with complex terrain or needing flexible turning; in particular, the pull rod also supports 270° rotation folding, greatly saves space, and can be easily placed in a corner of a house or a luggage compartment in a transportation process, and meets the high requirement of space utilization of modern travel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a state diagram of the first inclined surface and the second inclined surface of the rotating device embodiment of the utility model (the current state is applied to a cart, and the pull rod is in a straight upright state relative to the base and can be pushed);

[0018] Figure 2 is a state diagram of the first inclined surface and the second inclined surface of the rotating device embodiment of the utility model (the current state is applied to a cart, and the pull rod is in a straight upright state relative to the base and can be pushed); Figure 1 is a sectional view of the state diagram;

[0019] Figure 3 is a structure diagram of the rotating device embodiment of the utility model;

[0020] Figure 4 is a structure diagram of the rotating device embodiment of the utility model; Figure 2 is a structure diagram of the rotating device embodiment of the utility model;

[0021] Figure 5 is a state diagram of the third inclined surface and the fourth inclined surface of the rotating device embodiment of the utility model (the current state is applied to a cart, and the pull rod is in a storage state relative to the base);

[0022] Figure 6 is a side view of the state diagram; Figure 5

[0023] Figure 7 is a structure diagram of the rotating device embodiment of the utility model;

[0024] Figure 8 is a structure diagram of the cart embodiment of the utility model (the pull rod is in a straight upright state relative to the base and can be pushed);

[0025] Figure 9 is another state diagram of the cart embodiment of the utility model (the pull rod is in a storage state relative to the base, and the clasp is not drawn). DETAILED DESCRIPTION

[0026] ​In the description of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as limiting the utility model.

[0027] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0028] In the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] The trolley referred to in the embodiment refers to a kind of trolley for dragging, including pull rod and car body, the roller is installed below car body, and car body contains storage space similar to box or bag, which can be used to transport goods or pets.For example, pet trolley provided with pet box and pet cage;Luggage trolley provided with box or bag;Or handcart for dragging express or camping. The pushable state of trolley is generally the state when pull rod and car body are substantially perpendicular to each other, the user is behind the advancing direction, and the car body and the goods on the car body are moved forward by pushing the pull rod handle. Conversely, the trolley also has a pullable state, the car body and the pull rod are at an obtuse angle, the user pulls the pull rod in front of the advancing direction, and the car body and the goods on the car body are moved forward. The trolley also has the function of folding storage, and the conventional storage mode is that the car body itself is foldable and tends to fold close to the pull rod, such as camping handcart. Another storage mode is that the pull rod is folded and stored. The car body of this type of storage mode generally includes a base and a detachable box or bag mounted on the base, such as pet trolley or luggage trolley. The box or bag of the trolley can be detached and stored, and the pull rod can be slidably inserted under the base when rotated to be parallel to the base, and then pulled out when used.

[0030] As Figures 1-7 The utility model discloses a trolley pull rod's rotating device, including first rotating part 1 and second rotating part 2,

[0031] Including the first rotating part 1 of installing in the pull rod bottom and the second rotating part 2 of installing on the trolley body, the second rotating part is provided with rotating groove 20, the first rotating part 1 is equipped with the rotating end 10 of inducting rotating groove 20 and with its rotating connection, the first rotating part 1 is still provided with first inclined plane 11 and first clamping part, the second rotating part 2 is cooperatively provided with second inclined plane 21, second clamping part, the first inclined plane 11 and second inclined plane 21 can adhere to abut or away in the rotating process of the first rotating part 1 around the second rotating part 2, the first clamping part and second clamping part can be clamped or separate each other, when the first inclined plane 11 and second inclined plane 21 adhere and the first clamping part and second clamping part are clamped each other, the pull rod 3 is with the trolley body is pushable state. When the pull rod 3 rotates to the trolley body bottom and tends to be parallel with the trolley body bottom, the pull rod 3 is in the storage state. Compared with the rotating of pull rod and then sliding insertion, it is more convenient and fast.

[0032] As Figures 8-9 The rotating device of the embodiment is applied to the pull rod trolley with base 4, and the pull rod trolley is double pull rod. Of course, in some embodiments, the trolley can also use single pull rod, and the rotating device of the embodiment can also be applied. One end of the first rotating part 1 is installed at the bottom of the pull rod 3, and the other end is hinged to the second rotating part 2. When the user rotates the pull rod 3, the first rotating part 1 will be rotated along the hinge part until the first inclined plane 11 on the first rotating part and the second inclined plane 21 on the second rotating part are attached. When they are attached and abutted, the pull rod 3 and the trolley base 4 are in a state of being approximately perpendicular to each other, that is, the pull rod 3 is in a 90-degree upright state to facilitate the user to push. The attachment and abutment of the first inclined plane 11 and the second inclined plane 21, on the one hand, limits the continued rotation of the pull rod 3, so that the pull rod remains in a pushable state; on the other hand, since the limiting contact surface is an inclined plane, compared with a vertical contact surface, the contact area is larger, the force is more uniform, the stability of the rotating device is stronger, and the service life is longer.

[0033] Further, the first clamping part and the second clamping part are arranged to be able to separate each other only by using relatively large force. This is to enable the pull rod 3 to remain fixed in position or not to tilt when it is in the upright and pushable state without external force or with small external force.

[0034] More specifically, the first rotating member 1 is provided with a third inclined surface 12; the second rotating member 2 is provided with a fourth inclined surface 22; when the pull rod 3 is rotated to the storage state, the third inclined surface 12 and the fourth inclined surface 22 are in close contact. The third inclined surface 12 and the fourth inclined surface 22 are in close contact, which also plays a limiting role, avoiding the pull rod 3 from rotating beyond the limited angle when forcibly stored, causing the pull rod 3 to collide with the base 4 and causing damage.

[0035] More specifically, the second rotating member 2 is in the shape of a whole "V", including a connecting section 23 and a hinged section 24; the end of the connecting section 23 is connected and fixed with the base 4, and the hinged section 24 is inclined downward relative to the connecting section 23; the rotating groove 20 is arranged in the hinged section 24; the second inclined surface 21 and the fourth inclined surface 22 are arranged on the front side and the rear side of the hinged section 24, respectively. More specifically, the first inclined surface 11 and the third inclined surface 12 are arranged at the end of the rotating end 10 away from the vehicle body; the rotating angle range of the pull rod 3 of the embodiment is 0°-270°, so the first inclined surface 11 and the third inclined surface 12 are in a perpendicular relationship, and the first inclined surface 11 and the third inclined surface 12 intersect, and the intersection is connected through the arc surface 13; the second inclined surface 21 and the fourth inclined surface 22 are in a parallel relationship. The overall shape of the second rotating member 2 on the one hand facilitates the formation of the second inclined surface 21 and the fourth inclined surface 22, saving materials. On the other hand, the shape of the above-mentioned rotating device provides sufficient space for the relative rotation of the pull rod 3 and the base 4, and when stored, the pull rod 3 can also be close to the bottom surface of the base 4, and the storage is more complete and compact, the space utilization rate is high, and whether it is a corner at home or a luggage compartment during transportation, it can be easily placed, meeting the high requirements of modern travel for space utilization.

[0036] More specifically, the end of the connecting section 23 is provided with a first connecting hole 231 for plug-in connection of the longitudinal rod member 41 on the base; the connecting section 23 is also provided with a second connecting hole 232 for plug-in connection of the transverse rod member 42 on the base. The connecting section 23 and the base 4 have a longitudinal and transverse connection relationship, which is more stable and rigid compared to a single direction connection.

[0037] More specifically, the embodiment discloses a specific structure of the first limiting part and the second limiting part, including a protrusion 14 arranged on the rotating end 10; the protrusion 14 is formed on the side wall surface of the rotating end 10. Further, the inner side wall of the rotating groove 20 is provided with a clamping groove 25 corresponding to the protrusion 14. As shown in the accompanying drawings, the protrusion 14 is arranged on the side wall surface of the rotating end 10, and the clamping groove 25 is arranged on the inner side wall of the rotating groove 20 corresponding to the protrusion 14. When the pull rod 3 is in the storage state, the protrusion 14 is in close contact with the clamping groove 25, which limits the rotation of the pull rod 3 and prevents the pull rod 3 from rotating beyond the limited angle. Figure 6As shown, the width between the two protrusions 14 is slightly larger than the width of the rotating groove 20. The protrusions 14 and the rotating groove 20 are in a transitional fit, but the first rotating member 1 can still rotate normally relative to the second rotating member 2. However, the protrusions 14 will be in a squeezed state during the rotation. When the protrusions 14 enter the slot 25, they are in a clearance fit with the slot 25. The concave-convex fit between the two can play a limiting role to keep the pull rod upright. As shown, the slot 25 on the second rotating member is a through groove; the slot 25 is provided with a guide surface 251 on the side where the protrusions 14 are inserted to facilitate insertion and removal. The shape of the protrusions 14 is adapted to the slot 25. When the protrusions 14 are inserted into the slot 25, the first inclined surface 11 and the second inclined surface 12 are in contact, and the pull rod 3 is in an upright state. The fit between the slot 25 and the protrusions 14 allows the user to better receive force when pushing the cart, and further prevents the pull rod 3 from easily loosening and tipping over in an upright state. When the lever is released from its upright position, the user only needs to apply a force slightly greater than that required to rotate the lever to disengage the protrusion 14 from the slot 25. There is at least one slot 25. In some embodiments, the slot 25 can be used not only to limit the lever 3 in its upright position but also to limit it in its retracted position.

[0038] More specifically, this embodiment also includes a locking groove 15 and a cooperating hook 26; the locking groove 15 is formed on the rotating end 10, and the hook 26 is disposed in the rotating groove 20; during the rotation of the first rotating member 1, the hook 26 can extend into the locking groove 15 to lock or disengage from the locking groove 15. The locking groove 15 and the hook 26 have the same function as the protrusion 14 and the locking groove, all used to help the pull rod 3 maintain an upright state. At the same time, disengaging both also requires the user to use a little more force.

[0039] Of course, in some embodiments, the locking groove 15 and the corresponding locking hook 26 can replace the protrusion and the locking groove, becoming a specific structure of a first locking part and a second locking part.

[0040] This embodiment also discloses a trolley, including a base 4 and a pull rod 3. The base 4 and the pull rod 3 are connected by the aforementioned rotating device; rollers 5 are provided below the base 4. Figure 8 The trolley lever is in an upright position; Figure 9 The trolley handle is in a retracted state. Those skilled in the art can make various other corresponding changes and modifications based on the technical solution and concept described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A rotating device for a trolley lever, characterized in that, The device includes a first rotating component mounted at the bottom of the pull rod and a second rotating component mounted on the vehicle body. The second rotating component is provided with a rotating groove. The first rotating component is provided with a rotating end that extends into and is rotatably connected to the rotating groove. The first rotating component is also provided with a first inclined surface and a first locking portion. The second rotating component is provided with a second inclined surface and a second locking portion. During the rotation of the first rotating component around the second rotating component, the first inclined surface and the second inclined surface can approach or move away from each other, and the first locking portion and the second locking portion can lock or disengage from each other. When the first inclined surface and the second inclined surface are in contact and the first locking portion and the second locking portion lock each other, the pull rod is in a pushable state with respect to the vehicle body.

2. The rotating device for a trolley lever according to claim 1, characterized in that, The first rotating component has a third inclined surface; the second rotating component has a fourth inclined surface; when the pull rod drives the first rotating component to rotate around the second rotating component to the bottom of the vehicle body and tends to be parallel to the bottom of the vehicle body, the pull rod is in a retracted state, and the third inclined surface and the fourth inclined surface are in contact and abut against each other.

3. The rotating device for a trolley lever according to claim 2, characterized in that, The second rotating component is V-shaped and includes a connecting section and a hinge section. The connecting section is fixedly connected to the vehicle body. The hinge section is inclined downward relative to the connecting section. The rotating groove is disposed in the hinge section. The second inclined surface and the fourth inclined surface are respectively disposed on the front and rear sides of the hinge section.

4. The rotating device for a trolley lever according to claim 1, characterized in that, The first locking part includes a protrusion provided on the side wall surface of the rotating end; the second locking part includes a locking groove provided on the inner side wall of the rotating groove that cooperates with the protrusion.

5. The rotating device for a trolley lever according to claim 4, characterized in that, The number of slots is at least one, and when the protrusion is engaged in one of the slots, the first inclined surface and the second inclined surface are in contact.

6. The rotating device for a trolley lever according to claim 5, characterized in that, The slot has a guide slope on the side where the protrusion engages, which facilitates engagement and disengagement; the shape of the protrusion is adapted to the shape of the slot.

7. The rotating device for a trolley lever according to claim 1, characterized in that, The second locking part is included in the rotating groove. The first locking part includes a locking groove formed on the rotating end; a corresponding locking hook is provided; the locking hook can extend into the locking groove to lock or disengage from the locking groove.

8. The rotating device for a trolley lever according to claim 1, characterized in that, It also includes a locking groove and a corresponding locking hook; the locking groove is formed on the rotating end, and the locking hook is disposed in the rotating groove; during the rotation of the first rotating component, the locking hook can extend into the locking groove to lock or disengage from the locking groove.

9. The rotating device for a trolley lever according to claim 2, characterized in that, The first inclined surface and the third inclined surface are located at the end of the rotating end away from the vehicle body; the first inclined surface and the third inclined surface are perpendicular to each other and intersect, and the intersection is connected by an arc surface.

10. A trolley, characterized in that, The rotating device includes the trolley lever as described in any one of claims 1-9.

Images