Trundle assembly and box bottom with trundle assembly

Abstract

The trundle assembly comprises a bottom plate, a supporting block and a supporting wheel, a mounting groove is formed in the lower surface of the supporting block, a mounting concave hole is formed in the inner wall of the mounting groove, a limiting inclined block is fixedly connected to the inner wall of the mounting concave hole, the limiting inclined block is located at an opening of the mounting concave hole, and the supporting wheel is arranged in the mounting concave hole. The two ends of the supporting wheel are fixedly connected with supporting shafts, the supporting shafts are embedded into the installation concave holes along the limiting inclined blocks, and the supporting wheel extends out of the installation groove so that the purpose of conveniently assembling and disassembling the supporting wheel can be achieved.

Description

Technical Field

[0001] The utility model relates to a storage box, in particular to a caster assembly and a box bottom with the caster assembly. Background Art

[0002] A storage box is a box specially used to organize messy items. In order to ensure the cleanliness of the indoor environment, people often use storage boxes to store sundries, or use storage boxes to organize items needed for going out.

[0003] At present, a Chinese patent with authorization announcement number CN219116113U discloses a storage box, including a box body with an inner cavity and a box cover installed on the top of the box body, handle pieces are installed on the top of both sides of the box body, the handle pieces are rotatably connected to the box body, the handle pieces include a buckle part, a connecting part and a handle part, the connecting part is rotatably connected to the box body, the handle part has a handle hole, the buckle part can be abutted against the box cover and fasten the box cover to the top of the box body.

[0004] This type of storage box uses a handle to press the lid tightly onto the box body to prevent fingers from being pressed by the buckle and causing pain. The bottom of the box is usually flat. In order to facilitate movement, the wheels are usually fixed to the bottom of the box with screws. When the wheels are worn or damaged, a screwdriver is needed to complete the removal. Once the screws are rusted, it is very laborious to remove the screws. Utility Model Content

[0005] In view of this, the utility model aims to provide a caster assembly and a box bottom having the caster assembly, so as to achieve the effect of facilitating the replacement of supporting wheels.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a caster assembly, including a support block and a support wheel, the lower surface of the support block is provided with a mounting groove, the inner wall of the mounting groove is provided with a mounting recessed hole, the inner wall of the mounting recessed hole is fixedly connected with a limiting inclined block, the limiting inclined block is located at the opening of the mounting recessed hole, the two ends of the support wheel are connected with support shafts, the support shaft is embedded in the mounting recessed hole along the limiting inclined block, and the wheel surface of the support wheel extends out of the mounting groove.

[0007] To implement the above technical solution, after the support block is connected to the bottom plate of the box bottom, the support shaft is embedded into the mounting recessed hole along the limiting bevel block. The limiting effect of the limiting bevel block makes it difficult for the support shaft to fall out of the mounting recessed hole, and the support wheel rotates with the support shaft for easy transportation. When the support wheel is damaged, the support shaft can be pulled out of the mounting recessed hole by applying pulling force to the support wheel while holding the support wheel, so as to facilitate replacement of the support wheel.

[0008] As a preferred solution of the utility model, a support tube is fixedly connected to the inner wall of the installation groove, the support tube is connected to a support seat via a connecting structure, and an auxiliary wheel is rotatably connected to the support seat.

[0009] To implement the above technical solution, the connecting structure is connected to the support seat and the support tube, and the auxiliary wheels can play a role of auxiliary support.

[0010] As a preferred solution of the utility model, the connecting structure includes a fixing rod and a fixing hole, the fixing hole is opened on the support seat, the end of the fixing rod is fixedly connected with a fixing block, the fixing rod passes through the fixing hole and then enters the support tube, the fixing block contacts the lower surface of the support seat, and the fixing rod is connected to the support tube through an anti-slip mechanism.

[0011] To implement the above technical solution, the fixing rod is passed through the fixing hole and then inserted into the support tube. The fixing block supports the support seat. The fixing rod is connected to the support tube through the anti-slip mechanism to limit the support seat.

[0012] As a preferred solution of the utility model, the anti-slip mechanism includes an anti-slip groove and an anti-slip spring sheet. The end of the fixed rod is connected to the anti-slip rod. The anti-slip groove is opened on the outer wall of the anti-slip rod. The two ends of the anti-slip spring sheet are fixed on the inner wall of the support tube and bent into an arc shape. The middle part of the anti-slip spring sheet is used to embed in the anti-slip groove.

[0013] To implement the above technical solution, the fixing rod is passed through the fixing hole and then inserted into the supporting tube, so that the anti-dropping groove on the anti-dropping rod corresponds to the anti-dropping spring sheet, and the middle part of the anti-dropping spring sheet is embedded in the anti-dropping groove to achieve the anti-dropping effect of the fixing rod. When a pulling force is applied to the fixing rod, the anti-dropping spring sheet can drop out of the anti-dropping groove, and the fixing rod can be pulled out of the supporting tube, which is easy to operate.

[0014] As a preferred solution of the utility model, a weight-reducing hole is opened on the side wall of the support wheel, and a support rib is fixedly connected in the weight-reducing hole, and a plurality of the support ribs are evenly distributed along the axis of the support shaft.

[0015] The implementation of the above technical solution reduces the overall mass of the support wheel, and the support wheel can maintain a high structural strength through the arrangement of the support ribs.

[0016] The utility model also discloses a box bottom, comprising a bottom plate and a caster assembly, wherein four support blocks are respectively located at four corners of the bottom plate, and the bottom plate and the support blocks are connected via a clamping mechanism.

[0017] To implement the above technical solution, the connection between the support block and the base plate is made more convenient by setting the clamping structure.

[0018] As a preferred solution of the utility model, the clamping mechanism includes a receiving groove, a first reinforcing rib, a second reinforcing rib, a first connecting groove and a second connecting groove, the receiving groove is opened on the lower surface of the base plate, the first reinforcing rib and the second reinforcing rib are fixed on the bottom wall of the receiving groove, one end of the second reinforcing rib is fixedly connected to the middle part of the second reinforcing rib, the first connecting groove and the second connecting groove are both opened on the support block, the first reinforcing rib is embedded in the first connecting groove, and the second reinforcing rib is embedded in the second connecting groove.

[0019] To implement the above technical solution, the support block moves toward the bottom plate, so that the first reinforcing rib is embedded in the first connecting groove, and the second reinforcing rib is embedded in the second connecting groove. The friction force generated can realize the positioning of the support block, which is convenient for disassembly and assembly.

[0020] As a preferred solution of the utility model, a friction strip is fixedly connected to the outer wall of the support block, and the friction strip is used to press against the inner wall of the accommodating groove.

[0021] By implementing the above technical solution, the friction between the support block and the inner wall of the receiving groove is improved, so that the support block can be placed more stably.

[0022] As a preferred solution of the utility model, a plurality of the friction strips are provided, and the plurality of the friction strips are arranged in parallel, and the length direction of the friction strip is parallel to the height direction of the support block.

[0023] Implementing the above technical solution can further improve the stability of the support block placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the external structure of Example 1;

[0025] Figure 2 A schematic diagram showing the structure of the support block;

[0026] Figure 3 To reflect the structural diagram of the support wheel;

[0027] Figure 4 To show the schematic diagram of the connection structure between the support tube and the support seat;

[0028] Figure 5 A schematic diagram showing the structure of the anti-slip mechanism;

[0029] Figure 6 This is a schematic diagram showing the structure of Example 2;

[0030] Figure 7 A schematic diagram showing the position of the first reinforcement rib;

[0031] Figure 8 It is a schematic diagram showing the position of the first connecting groove.

[0032] 1. Support block; 11. Support wheel; 12. Support shaft; 2. Mounting groove; 3. Support plate; 31. Mounting recess; 32. Limiting inclined block; 41. Weight reduction hole; 42. Support rib; 51. Support tube; 52. Support seat; 53. Auxiliary wheel; 6. Connecting structure; 61. Fixing rod; 62. Fixing hole; 63. Fixing block; 7. Anti-slip mechanism; 71. Anti-slip groove; 72. Anti-slip spring sheet; 73. Anti-slip rod; 8. Bottom plate; 9. Clamping mechanism; 91. Accommodating groove; 92. First reinforcing rib; 93. Second reinforcing rib; 94. First connecting groove; 95. Second connecting groove; 96. Friction strip. DETAILED DESCRIPTION

[0033] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0034] Embodiment 1: A caster assembly includes a support wheel 11 and a square support block 1. A mounting groove 2 is provided on the lower surface of the support block 1, and a support plate 3 is preferably fixedly connected to the inner wall of the mounting groove 2, and the cross section of the support plate 3 is arranged in an isosceles trapezoid. Two support plates 3 are arranged opposite to each other; a mounting recess 31 is provided at the end of the support plate 3.

[0035] A limiting inclined block 32 is fixedly connected to the inner wall of the mounting recessed hole 31, and the limiting inclined block 32 is located at the opening of the mounting recessed hole 31. Support shafts 12 are fixedly connected to both ends of the support wheel 11, and the outer diameter of the support shaft 12 is greater than the distance between the two limiting inclined blocks 32. The support shaft 12 is embedded in the mounting recessed hole 31 along the limiting inclined block 32, and the support wheel 11 extends out from the mounting groove 2.

[0036] A weight-reducing hole 41 is opened on the side wall of the support wheel 11 , and a support rib 42 is fixedly connected in the weight-reducing hole 41 . Four support ribs 42 are evenly distributed along the axis of the support shaft 12 .

[0037] A support tube 51 is fixedly connected to the inner wall of the mounting groove 2, and the support tube 51 is connected to a support seat 52 through a connecting structure 6. The support seat 52 is located below the support tube 51. The connecting structure 6 includes a fixing rod 61 and a fixing hole 62. Among them, the fixing hole 62 is opened on the support seat 52, and a fixing block 63 is fixedly connected to the end of the fixing rod 61. The fixing rod 61 passes through the fixing hole 62 and then penetrates into the support tube 51, and the fixing block 63 contacts the lower surface of the support seat 52. The outer diameter of the fixing block 63 is larger than the inner diameter of the fixing hole 62. The fixing rod 61 is connected to the support tube 51 through an anti-slip mechanism 7.

[0038] The anti-slip mechanism 7 includes an anti-slip groove 71 and an anti-slip spring sheet 72. The end of the fixed rod 61 is connected to an anti-slip rod 73, and the outer diameter of the anti-slip rod 73 is smaller than the outer diameter of the fixed rod 61. The anti-slip groove 71 is provided on the outer wall of the anti-slip rod 73, and the anti-slip groove 71, the anti-slip rod 73 and the fixed rod 61 are coaxially arranged. The two ends of the anti-slip spring sheet 72 are fixed to the inner wall of the support tube 51, and the middle part of the anti-slip spring sheet 72 is bent into an arc. The middle part of the anti-slip spring sheet 72 is used to be embedded in the anti-slip groove 71.

[0039] At this time, the support base 52 can rotate along the axis of the fixing rod 61 .

[0040] An auxiliary wheel 53 is rotatably connected to the support base 52 .

[0041] By applying a pulling force to the fixing rod 61 to overcome the friction between the anti-dropping rod 73 and the anti-dropping spring sheet 72 , the fixing rod 61 can be pulled out from the supporting tube 51 , so that the supporting seat 52 can be replaced.

[0042] Embodiment 2: A box bottom, comprising a bottom plate 8 and a caster assembly in Embodiment 1, wherein four support blocks 1 are respectively located at four corners of the bottom plate 8, and the bottom plate 8 and the support blocks 1 are connected via a clamping mechanism 9.

[0043] The clamping mechanism 9 includes a receiving groove 91, a first reinforcing rib 92, a second reinforcing rib 93, a first connecting groove 94 and a second connecting groove 95. The receiving groove 91 is provided on the lower surface of the bottom plate 8. The first reinforcing rib 92 and the second reinforcing rib 93 are fixed to the bottom wall of the receiving groove 91, and the first reinforcing rib 92 is arranged in an L shape. One end of the second reinforcing rib 93 is fixedly connected to the middle part of the second reinforcing rib 93, and the other end is fixedly connected to the inner wall of the receiving groove 91.

[0044] The first connection groove 94 and the second connection groove 95 are both formed on the support block 1. The first reinforcing rib 92 is embedded in the first connection groove 94, and the second reinforcing rib 93 is embedded in the second connection groove 95.

[0045] A friction strip 96 is fixedly connected to the outer wall of the support block 1, and the friction strip 96 is used to press against the inner wall of the receiving groove 91; in order to increase friction and stability, a plurality of friction strips 96 are provided, and the plurality of friction strips 96 are arranged in parallel. The length direction of the friction strip 96 is parallel to the height direction of the support block 1.

[0046] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A caster assembly, characterized in that: The invention comprises a support block (1) and a support wheel (11), wherein a mounting groove (2) is provided on the lower surface of the support block (1), a mounting recessed hole (31) is provided on the inner wall of the mounting recessed hole (2), a limiting inclined block (32) is fixedly connected to the inner wall of the mounting recessed hole (31), the limiting inclined block (32) is located at the opening of the mounting recessed hole (31), support shafts (12) are connected to the two ends of the support wheel (11), the support shaft (12) is embedded in the mounting recessed hole (31) along the limiting inclined block (32), and the wheel surface of the support wheel (11) protrudes from the mounting groove (2).

2. A caster assembly according to claim 1, characterized in that: A support tube (51) is fixedly connected to the inner wall of the installation groove (2); the support tube (51) is connected to a support seat (52) via a connection structure (6); and an auxiliary wheel (53) is rotatably connected to the support seat (52).

3. A caster assembly according to claim 2, characterized in that: The connection structure (6) comprises a fixing rod (61) and a fixing hole (62). The fixing hole (62) is formed on the support seat (52). The end of the fixing rod (61) is fixedly connected with a fixing block (63). The fixing rod (61) passes through the fixing hole (62) and then enters the support tube (51). The fixing block (63) contacts the lower surface of the support seat (52). The fixing rod (61) is connected to the support tube (51) via an anti-slip mechanism (7).

4. A caster assembly according to claim 3, characterized in that: The anti-slip mechanism (7) comprises an anti-slip groove (71) and an anti-slip spring sheet (72); the end of the fixing rod (61) is connected to an anti-slip rod (73); the anti-slip groove (71) is arranged on the outer wall of the anti-slip rod (73); the two ends of the anti-slip spring sheet (72) are fixed on the inner wall of the support tube (51) and bent into an arc; the middle part of the anti-slip spring sheet (72) is used to be embedded in the anti-slip groove (71).

5. The caster assembly according to claim 1, characterized in that: A weight-reducing hole (41) is provided on the side wall of the support wheel (11), and a support rib (42) is fixedly connected inside the weight-reducing hole (41), and a plurality of the support ribs (42) are evenly distributed along the axis of the support shaft (12).

6. A box bottom, comprising a bottom plate (8) and a caster assembly according to any one of claims 1 to 5, characterized in that: The four support blocks (1) are respectively located at the four corners of the bottom plate (8), and the bottom plate (8) and the support blocks (1) are connected via a clamping mechanism (9).

7. A box bottom according to claim 6, characterized in that: The clamping mechanism (9) comprises a receiving groove (91), a first reinforcing rib (92), a second reinforcing rib (93), a first connecting groove (94) and a second connecting groove (95); the receiving groove (91) is provided on the lower surface of the bottom plate (8); the first reinforcing rib (92) and the second reinforcing rib (93) are fixed on the bottom wall of the receiving groove (91); one end of the second reinforcing rib (93) is fixedly connected to the middle part of the second reinforcing rib (93); the first connecting groove (94) and the second connecting groove (95) are both provided on the supporting block (1); the first reinforcing rib (92) is embedded in the first connecting groove (94); and the second reinforcing rib (93) is embedded in the second connecting groove (95).

8. A box bottom according to claim 7, characterized in that: A friction strip (96) is fixedly connected to the outer wall of the support block (1), and the friction strip (96) is used to press against the inner wall of the accommodating groove (91).

9. A box bottom according to claim 8, characterized in that: A plurality of the friction strips (96) are provided, and the plurality of friction strips (96) are arranged in parallel, and the length direction of the friction strips (96) is parallel to the height direction of the support block (1).

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