Universal wheel structure with higher steering capability

Abstract

The utility model relates to a universal wheel structure with higher steering capability, and belongs to the technical field of universal wheels. Comprising a bearing seat and a roller seat, the roller seat is rotatably arranged at the bottom of the bearing seat, a hinged roller is arranged at the bottom of one side of the roller seat, a bearing is arranged at the bottom of the bearing seat, a boss protruding upwards is arranged at the top of the roller seat, and the bottom of the bearing abuts against the top of the boss; according to the scheme, the bearing structure is arranged at the bottom of the bearing seat, the boss on the roller seat abuts against the bearing and does not make direct contact with the bottom of the upper bearing seat, the balls in the bearing have high rotating capacity, and even if a heavy object is placed above a moved object, the balls in the bearing can rotate and drive the roller seat at the bottom to rotate; the roller seat has higher rotating capacity, and the rollers at the bottom can rotate to a specified direction, so that an object is pushed to move.

Description

Technical Field

[0001] This utility model belongs to the field of omnidirectional wheel technology and relates to an omnidirectional wheel structure with stronger steering ability. Background Technology

[0002] Casters are devices installed on the bottom of items such as trolleys, office chairs, wardrobes, suitcases, and flower pot trays, allowing these items to be easily moved. A typical caster setup consists of a roller and a connecting frame. The roller is hinged to one side of the bottom of the connecting frame, and the top of the connecting frame is rotatably connected to the item, allowing the roller on the connecting frame to rotate in any direction, thus pushing the item.

[0003] However, the existing caster wheel structure still has some shortcomings. The bottom of the above-mentioned items is usually equipped with four or more caster wheels. In order to maintain the stability of the items, when the items are not pushed, the caster wheels at the bottom will maintain different orientations, so that the items will not move easily. When the weight of the items on the caster wheel structure is heavy, the friction between the items and the connecting frame will increase, causing the orientation of the connecting frame to be locked. Some rollers cannot rotate to the specified orientation, making it difficult to push the items to move. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the current technology by proposing a universal wheel structure with stronger steering capability. The technical problem to be solved by this invention is: how to maintain the steering capability of the roller when carrying heavy objects.

[0005] The objective of this utility model can be achieved through the following technical solution: a universal wheel structure with stronger steering capability, including a bearing seat and a roller seat, wherein the roller seat is rotatably disposed at the bottom of the bearing seat, a roller is provided on one side of the bottom of the roller seat with hinged connection, a bearing is provided at the bottom of the bearing seat, and an upwardly protruding boss is provided at the top of the roller seat, wherein the bottom of the bearing abuts against the top of the boss.

[0006] In this design, the bearing housing is located at the bottom of the object being moved, and the roller housing connects the roller and the bearing housing. The rotating roller allows the object to be easily pushed. In the above structure, a bearing structure is provided at the bottom of the bearing housing, so that the boss on the roller housing abuts against the bearing and does not directly contact the bottom of the upper bearing housing. The balls inside the bearing have strong rotational capacity. Even if a heavy object is placed on top of the object being moved, the balls inside the bearing can still rotate and drive the bottom roller housing to rotate, causing the bottom roller to rotate in the specified direction, thereby pushing the object to move.

[0007] In the aforementioned omnidirectional wheel structure with enhanced steering capability, the top of the roller seat is provided with a connecting shaft, and the outer wall of the connecting shaft is provided with a snap-fit ​​part. The bottom of the bearing seat is provided with a mounting post, and the mounting post has a mounting groove inside. When the connecting shaft is inserted into the mounting groove, the snap-fit ​​part engages with the structure inside the mounting groove. The snap-fit ​​part can be a structure that protrudes outward or is recessed inward. The mounting groove has corresponding recessed or protruding structures. When the connecting part is inserted into the mounting groove, the snap-fit ​​part engages with the corresponding structure inside the mounting groove, preventing the roller seat from falling off while allowing it to be rotatably connected to the bearing seat.

[0008] In the aforementioned omnidirectional wheel structure with enhanced steering capability, the bottom of the connecting shaft is integrally connected to the roller seat, and a fixed metal rod is provided inside the connecting shaft. The connecting shaft and roller seat are integrally formed, and the metal rod inserted inside the connecting shaft improves the structural strength of the connecting shaft, enhances the load-bearing capacity of the omnidirectional wheel structure, and extends its service life.

[0009] In the aforementioned omnidirectional wheel structure with enhanced steering capability, the connecting shaft is entirely made of metal, and its bottom is inserted into and fixedly connected to the roller seat. The connecting shaft and roller seat are connected separately; the connecting shaft is inserted into the roller seat and then fixedly connected. The fact that the connecting shaft is entirely made of metal improves its structural strength.

[0010] In the aforementioned swivel wheel structure with enhanced steering capability, the bottom of the mounting post is higher than the bottom of the bearing. This elevation prevents the boss from contacting the bearing housing, reducing friction.

[0011] In the aforementioned omnidirectional wheel structure with enhanced steering capability, rotatable washers are provided on the upper and lower sides of the bearing, and a fixing kit is fitted onto the outer bottom of the bearing housing. The bottom end of the fixing kit has a limiting part that extends inward to directly below the bearing. The limiting part on the fixing kit is used to hold the bearing in place, preventing it from falling off.

[0012] In the aforementioned omnidirectional wheel structure with enhanced steering capability, the top side wall of the fixing kit is provided with several slots, and the side wall of the bearing housing is provided with several ribs. The ribs are inserted into the slots, allowing the fixing kit to engage with the bottom of the bearing housing. The ribs enhance the structural strength of the bearing housing, and the bottom also serves to engage the fixing kit.

[0013] In the aforementioned omnidirectional wheel structure with enhanced steering capability, a tray is provided on top of the bearing housing. The bearing housing and the ribs on the side walls are integrally formed and connected to the tray. The bottom of the tray has four identical bearing housings and roller seats. Flower pots are placed on top of the tray, and pushing the tray allows for easy movement of heavier potted plants.

[0014] In the aforementioned omnidirectional wheel structure with enhanced steering capability, the roller base consists of an upper housing and a lower housing, which are fixedly connected. The upper and lower housings can be fixedly connected via ultrasonic waves or by bolts and threaded holes.

[0015] In the aforementioned omnidirectional wheel structure with enhanced steering capability, the roller has a hinged axle inside, with both ends of the axle fixedly connected to the roller seat, and the outer side of the roller is coated with rubber. The axle connects the roller, and the rubber coating on the outer side of the roller reduces noise when the roller is rolling.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] In this design, a bearing structure is provided at the bottom of the bearing housing, so that the boss on the roller housing abuts against the bearing and does not directly contact the bottom of the upper bearing housing. The balls inside the bearing have strong rotational ability. Even if a heavy object is placed on top of the object being moved, the balls inside the bearing can still rotate and drive the bottom roller housing to rotate, giving the roller housing a stronger rotational ability. The bottom roller can rotate to a specified direction, thereby pushing the object to move. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a frontal half-sectional view of the structure of this utility model;

[0020] Figure 3 This is a half-sectional structural diagram of Embodiment 2 of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of Embodiment 3 of this utility model.

[0022] In the diagram, 1. Bearing housing; 1a. Rib; 1b. Mounting post; 1c. Mounting groove; 2. Roller seat; 2a. Upper housing; 2b. Lower housing; 2c. Boss; 3. Roller; 3a. Roller shaft; 3b. Rubber coating; 4. Fixing kit; 4a. Slot; 4b. Limiting part; 5. Bearing; 5a. Shim; 6. Connecting shaft; 6a. Snap-fit ​​part; 6b. Metal rod; 7. Tray; 7a. Slide rail; 8. Water tank; 9. Self-locking switch. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0024] like Figure 1 As shown, the omnidirectional wheel structure with stronger steering capability includes a bearing seat 1. The top of the outer wall of the bearing seat 1 is provided with several integrally connected ribs 1a. The bottom of the bearing seat 1 is provided with a fixing kit 4. The top of the fixing kit 4 is provided with several slots 4a. The ribs 1a are inserted into the slots 4a to make the fixing kit 4 and the bearing seat 1 snap-fitted together. The bottom of the bearing seat 1 is provided with a rotatable roller seat 2. The roller seat 2 is composed of an upper shell 2a and a lower shell 2b. The upper shell 2a and the lower shell 2b are fixedly connected. A hinged roller 3 is provided on one side of the bottom of the roller seat 2.

[0025] like Figure 2 As shown, the bearing seat 1 has a bearing 5 at its bottom, and gaskets 5a are provided on the upper and lower sides of the bearing 5. The bottom end of the fixing kit 4 has a limiting part 4b, which extends inward to directly below the bearing 5. The top of the roller seat 2 has a boss 2c, the top of which abuts against the gaskets 5a at the bottom of the bearing 5. A connecting shaft 6 is integrally connected above the boss 2c. A metal rod 6b is fixedly connected inside the connecting shaft 6, and a snap-fit ​​is provided on the outer wall of the connecting shaft 6. Part 6a, the bearing seat 1 has a mounting post 1b at its center, the bottom of the mounting post 1b is higher than the bottom of the bearing 5, the mounting post 1b has a mounting groove 1c inside, when the connecting shaft 6 is inserted into the mounting groove 1c, the snap-fit ​​part 6a snaps into the mounting groove 1c, so that the roller seat 2 is rotatably set at the bottom of the bearing seat 1, the roller 3 has a hinged roller 3a inside, the two ends of the roller 3a are fixed to the roller seat 2, and the outer side of the roller 3 is covered with rubber 3b.

[0026] The working principle of this solution is as follows: Figure 1-2 As shown, the bearing seat 1 is used to install on the bottom of the moved item, and the rotatable roller seat 2 is used to connect the roller 3 and the bearing seat 1, so that the roller 3 can rotate to a specified direction. The rotation of the roller 3 allows these items to be pushed easily. Since a bearing 5 structure is set at the bottom of the bearing seat 1, the boss 2c on the roller seat 2 abuts against the upper pad 5a, and the upper part of the pad 5a contacts the ball on the bearing 5, so that the pad 5a can rotate together with the bottom roller seat 2. The ball inside the bearing 5 has a strong rotational capacity. Even if a heavy item is placed on top of the moved item, the ball inside the bearing 5 can rotate and drive the bottom pad 5a and the roller seat 2 to rotate, so that the bottom roller 3 rotates to a specified direction, thereby pushing the item to move. Example

[0027] This example is an alternative to Embodiment 1, differing from Embodiment 1 in that the structure of the connecting shaft 6 is different, such as... Figure 3As shown, in this embodiment, the connecting shaft 6 and the roller seat 2 are connected separately. The connecting shaft 6 is made of metal material. The bottom of the connecting shaft 6 is inserted into the roller seat 2 and fixedly connected. The connection method between the upper end of the connecting shaft 6 and the bearing seat 1 is the same as in Embodiment 1. This structure of the connecting shaft 6 can effectively improve the structural strength and enhance the load-bearing capacity of the universal wheel structure. Example

[0028] This embodiment illustrates one application scenario of the aforementioned omnidirectional wheel structure, such as... Figure 4 As shown, the bearing seat 1 is integrally connected to the bottom of the flowerpot tray 7. The four corners of the tray 7 are equipped with identical bearing seats 1 and roller seats 2. The top of the tray 7 is used to place potted plants. When the tray 7 needs to be moved, the universal wheels at the bottom allow the roller seats 2 to rotate even when the potted plants are heavy, so that all the rollers 3 rotate to the same direction, thus moving the tray 7. A water storage box 8 is provided at the bottom of the tray 7 to collect water accumulated above the tray 7. The top of the tray 7 is high around the edges and low in the center, allowing water to flow quickly into the water storage box 8. The water storage box 8 is pulled out from the bottom of the tray 7 via a slide rail 7a. One end of the water storage box 8 is connected to a self-locking switch 9 to prevent it from falling off. By pressing the water storage box 8 inwards using the self-locking switch 9, it can be pulled out from the bottom of the tray 7.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0030] Although this document frequently uses terms such as 1. bearing housing; 1a. rib; 1b. mounting post; 1c. mounting groove; 2. roller housing; 2a. upper housing; 2b. lower housing; 2c. boss; 3. roller; 3a. roller shaft; 3b. rubber coating; 4. fixing kit; 4a. slot; 4b. limiting part; 5. bearing; 5a. gasket; 6. connecting shaft; 6a. snap-fit ​​part; 6b. metal rod; 7. tray; 7a. slide rail; 8. water tank; 9. self-locking switch, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A universal wheel structure with stronger steering capability, comprising a bearing seat (1) and a roller seat (2), the roller seat (2) being rotatably arranged at the bottom of the bearing seat (1), and a hinged connected roller (3) being arranged at the bottom of one side of the roller seat (2), characterized in that, The bottom of the bearing seat (1) is provided with a bearing (5), the top of the roller seat (2) is provided with a boss (2c) protruding upward, and the bottom of the bearing (5) abuts against the top of the boss (2c).

2. The structure of the universal wheel with stronger steering capability according to claim 1, wherein, The top of the roller seat (2) is provided with a connecting shaft (6), the outer side wall of the connecting shaft (6) is provided with a clamping part (6a), the bottom of the bearing seat (1) is provided with a mounting column (1b), the inside of the mounting column (1b) is provided with a mounting groove (1c), and when the connecting shaft (6) is inserted into the inside of the mounting groove (1c), the clamping part (6a) is clamped and connected with the structure in the inside of the mounting groove (1c).

3. The universal wheel structure with stronger steering capability according to claim 2, characterized in that, The bottom of the connecting shaft (6) is integrally connected with the roller seat (2), and the inside of the connecting shaft (6) is provided with a fixed metal rod (6b).

4. The universal wheel structure having stronger steering ability according to claim 2, wherein The connecting shaft (6) is made of metal material, and the bottom of the connecting shaft (6) is inserted into the inside of the roller seat (2) and fixedly connected.

5. The structure of the universal wheel with stronger steering ability according to claim 2, wherein, The bottom of the mounting column (1b) is higher than the bottom of the bearing (5).

6. The structure of the universal wheel with stronger steering capability according to claim 1, wherein, The upper and lower sides of the bearing (5) are provided with rotatable gaskets (5a), the bottom outside of the bearing seat (1) is provided with a fixed sleeve (4), the bottom end of the fixed sleeve (4) is provided with a limiting part (4b), and the limiting part (4b) extends inwardly to the directly below of the bearing (5).

7. The structure of the universal wheel with stronger steering ability according to claim 6, characterized in that, The side wall top of the fixed sleeve (4) is provided with a plurality of clamping grooves (4a), the side wall of the bearing seat (1) is provided with a plurality of ribs (1a), the ribs (1a) are inserted into the inside of the clamping grooves (4a), and the fixed sleeve (4) and the bottom of the bearing seat (1) are clamped and connected.

8. The structure of the universal wheel with stronger steering ability according to claim 7, wherein, The top of the bearing seat (1) is provided with a tray (7), the bearing seat (1) and the ribs (1a) on the side wall are connected with the tray (7) in an integral molding manner, and the bottom of the tray (7) is provided with four bearing seats (1) and roller seats (2) which are the same in structure.

9. The structure of the universal wheel with stronger steering capability according to claim 1, wherein, The roller seat (2) is composed of an upper shell (2a) and a lower shell (2b), and the upper shell (2a) and the lower shell (2b) are fixedly connected.

10. The structure of the universal wheel with stronger steering capability according to claim 1, wherein, The inside of the roller (3) is provided with a hinged roller shaft (3a), both ends of the roller shaft (3a) are fixedly connected with the roller seat (2), and the outside of the roller (3) is provided with a rubber coating (3b).

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