Detachable trundle

Abstract

The utility model discloses a detachable trundle which comprises a fixed seat, a fixed part is clamped in the fixed seat, one side of a fixed shaft is clamped in the fixed part, a trundle frame is clamped on the other side of the fixed shaft, two sides of the trundle frame are rotatably connected with idler wheels respectively, and decorative covers are clamped at the ends, opposite to each other, of the idler wheels respectively. The wheel carrier can be conveniently and rapidly disassembled in the mode that the fixing piece and the mounting base are connected in a clamped mode, meanwhile, the fixing piece and the mounting base are independently arranged, the fixing piece can be disassembled without disassembling the fixing base, and the disassembling mode is simple and rapid.

Description

Technical Field

[0001] This utility model relates to the field of caster technology, specifically to a detachable caster. Background Technology

[0002] Casters are a general term that includes swivel casters, fixed casters, and swivel casters with brakes. Swivel casters, also known as universal wheels, are designed to rotate 360 ​​degrees; fixed casters, also called directional casters, have no rotating mechanism and cannot turn. Usually, the two types of casters are used together. For example, a handcart typically has two fixed casters at the front and two swivel casters near the push handle at the back.

[0003] Most existing casters are currently fixed to equipment with bolts. A search reveals a detachable caster structure disclosed in Chinese Patent Publication No. CN207055054U, which includes a wheel, a fixed base, and a caster fixing shaft. Two connecting parts are fixed between the fixed base and the caster fixing shaft, one of which is located in a slot on the upper surface of the fixed base. The middle section of the caster fixing shaft has an outwardly protruding annular boss. The bottom surface of the fixed base has a shaft cavity, which is composed of a cylindrical stepped top cavity and a stepped bottom cavity. The annular boss is fixedly positioned in the stepped top cavity, and the annular boss of the caster fixing shaft is suspended above the stepped bottom cavity and locked inside the stepped top cavity.

[0004] Although this patent uses a split caster, a split caster mounting base, and a detachable caster mounting shaft for fixation, allowing for easy disassembly and replacement if any of the three components is damaged, disassembly of the caster requires tightening screws located inside the mounting base. Tightening the screws necessitates first disassembling the mounting base, making the process rather cumbersome. Therefore, we propose a detachable caster to solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a detachable caster to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a detachable caster, including a fixed base, a fixing member being snapped into the fixed base, a fixing shaft being snapped into one side of the fixing member, a wheel frame being snapped into the other side of the fixing shaft, rollers being rotatably connected to both sides of the wheel frame, and decorative covers being snapped into the opposite ends of the rollers.

[0007] Preferably, mounting holes are provided at the four corners of the fixing base.

[0008] Preferably, the center of the fixing base is recessed with a insertion groove, which is inserted into and cooperates with the fixing member. A plurality of positioning plates are fixedly connected to the inner wall of the insertion groove, and the positioning plates are evenly distributed around the circumference.

[0009] Preferably, the two sides of the insertion slot are respectively provided with a slot, and one end of the slot is provided with a through opening, which is provided through the fixing base.

[0010] Preferably, the fixing member has a plurality of positioning grooves recessed on its periphery, the positioning grooves being inserted into and engaged with the positioning plate, and the positioning grooves and the positioning plate being set in a one-to-one correspondence.

[0011] Preferably, the fixing member has a coaxially fixed inner positioning ring inside, and one side of the fixing shaft is sleeved inside the positioning inner ring. Movable grooves are respectively opened on both sides of the positioning inner ring. Anti-detachment blocks and cylindrical blocks are slidably engaged on both sides of the movable grooves. The anti-detachment blocks and cylindrical blocks are respectively fixedly connected to the two ends of the spring at opposite ends. The spring is movably disposed in the movable groove. The end of the cylindrical block away from the spring slides against the actuating plate. The actuating plate is movably disposed on both sides of the fixing member. The opposite end faces of the actuating plate are respectively fixedly connected to the second locking block, and the second locking block is slidably engaged with the locking groove.

[0012] Preferably, anti-detachment grooves are provided at both ends of one side of the fixed shaft, and the anti-detachment grooves are slidably engaged with the anti-detachment blocks.

[0013] Preferably, a positioning ring is fixedly sleeved on the outside of the fixed shaft, and an annular groove is formed on the side of the fixed shaft away from the positioning ring.

[0014] Preferably, one end of the wheel frame is recessed and has a insertion hole, in which a ball is movably disposed, and the insertion hole is inserted into and fitted with a fixed shaft.

[0015] Preferably, the roller is fitted with a rubber rim, and the roller has several U-shaped openings. At least three U-shaped openings are evenly distributed around the circumference of each U-shaped opening. Each U-shaped opening is fixedly connected to a locking block, which engages with a locking strip. One end of the locking strip is fixedly connected to a decorative cover, and reinforcing ribs are fixedly connected to the connection between the locking strip and the decorative cover.

[0016] Compared with the prior art, the advantages of this utility model are: by using the fastener and the mounting base to snap together, the wheel frame can be quickly disassembled. At the same time, the two are set independently, so the fastener can be disassembled without disassembling the mounting base. The disassembly method is simple and quick. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded view of the present invention;

[0019] Figure 3 This is a schematic diagram of the fixed base structure in this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 5 This is a cross-sectional view of the position of the toggle plate of this utility model;

[0022] Figure 6 This utility model Figure 5 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 7 This is a schematic diagram of the roller structure in this utility model;

[0024] Figure 8 This is a schematic diagram of the decorative cover structure in this utility model.

[0025] In the diagram: 1. Fixed base, 11. Through port, 12. Mounting hole, 13. Slot, 14. Positioning plate, 15. Insertion slot, 2. Wheel frame, 21. Insertion hole, 3. Roller, 31. Rubber wheel rim, 32. U-shaped opening, 33. Block 1, 4. Decorative cover, 41. Locking strip, 42. Reinforcing rib, 5. Fixed shaft, 51. Annular groove, 52. Positioning ring, 53. Anti-detachment groove, 6. Fixing piece, 61. Positioning groove, 62. Block 2, 63. Actuating plate, 64. Positioning inner ring, 65. Movable groove, 66. Anti-detachment block, 67. Spring, 68. Columnar locking block, 7. Ball. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Reference Figure 1-3 This is the first embodiment of the present utility model. This embodiment provides a detachable caster, including a fixed base 1, a fixing member 6 is snapped into the fixed base 1, one side of the fixing shaft 5 is snapped into the fixing member 6, the other side of the fixing shaft 5 is snapped into the wheel frame 2, the two sides of the wheel frame 2 are respectively rotatably connected to rollers 3, and the opposite ends of the rollers 3 are respectively snapped into decorative covers 4.

[0029] The mounting base 1 is fixedly installed on the item being used with screws. The fixing part 6 is snapped into the mounting base 1. One side of the fixing shaft 5 is snapped into the fixing part 6, and the other side of the fixing shaft 5 is connected to the wheel frame 2, thus realizing the overall connection of the caster and facilitating the use of the caster. When disassembly is required, the fixing part 6 is disengaged from the mounting base 1, and the wheel frame 2 can be disassembled without disassembling the mounting base 1, ensuring the fixed position of the installation and making disassembly simpler and faster.

[0030] Example 2

[0031] Reference Figure 1-8 This is the second embodiment of the present utility model. This embodiment is based on the previous embodiment. Specifically, the four corners of the fixing base 1 are respectively provided with mounting holes 12. By passing screws through the mounting holes 12, the fixing base 1 can be fixedly installed on the item being used.

[0032] Specifically, the center of the fixed base 1 is recessed with a insertion groove 15, which is inserted into the fixing member 6. The inner wall of the insertion groove 15 is fixedly connected with several positioning plates 14, which are evenly distributed around the circumference.

[0033] Furthermore, slots 13 are provided on both sides of the insertion slot 15, and one end of the slot 13 is provided with a through opening 11, which is provided through the fixed base 1.

[0034] Furthermore, the fastener 6 has a plurality of positioning grooves 61 recessed on its periphery. The positioning grooves 61 are inserted into and cooperate with the positioning plate 14. The positioning grooves 61 and the positioning plate 14 are set one-to-one.

[0035] When the fastener 6 is inserted into the fixed base 1, the positioning grooves 61 are inserted into the positioning plate 14 one by one, thereby limiting the fastener 6 and preventing the fastener 6 from rotating.

[0036] Specifically, the inner positioning ring 64 is coaxially fixedly connected inside the fixing member 6. One side of the fixing shaft 5 is sleeved inside the positioning ring 64. Movable grooves 65 are respectively opened on both sides of the positioning ring 64. Anti-detachment block 66 and cylindrical block 68 are slidably engaged on both sides of the movable groove 65. The opposite ends of the anti-detachment block 66 and cylindrical block 68 are fixedly connected to the two ends of the spring 67. The spring 67 is movably disposed in the movable groove 65. The end of the cylindrical block 68 away from the spring 67 slides against the actuating plate 63. The actuating plate 63 is movably disposed on both sides of the fixing member 6. The opposite end faces of the actuating plate 63 are fixedly connected to the second block 62. The second block 62 is slidably engaged with the slot 13.

[0037] After the fastener 6 is inserted into the fixing base 1, the second locking block 62 is respectively locked into the locking groove 13, thereby limiting and fixing the fastener 6. At the same time, under the elastic force of the spring 67, the cylindrical locking block 68 is always in contact with the actuating plate 63, so that the second locking block 62 is always locked into the locking groove 13 to prevent it from falling off. When it is necessary to disassemble the fastener 6, the actuating plate 63 is manually pressed to drive the fixed locking block 62 to disengage from the locking groove 13, thereby causing the fastener 6 to disengage from the insertion groove 15 of the fixing base 1, thus realizing the disassembly of the fastener 6.

[0038] Furthermore, anti-detachment grooves 53 are respectively provided at both ends of one side of the fixed shaft 5, and the anti-detachment grooves 53 are slidably engaged with the anti-detachment block 66.

[0039] The anti-detachment block 66 engages with the anti-detachment groove 53, thereby engaging the fixed shaft 5 with the fixing member 6 and preventing the fixed shaft 5 from detaching from the fixing member 6.

[0040] Specifically, a positioning ring 52 is fixedly sleeved on the outside of the fixed shaft 5, and an annular groove 51 is provided on the side of the fixed shaft 5 away from the positioning ring 52.

[0041] Specifically, one end of the wheel frame 2 is recessed and has a insertion hole 21, and a ball 7 is movably disposed in the insertion hole 21. The insertion hole 21 is inserted and engaged with the fixed shaft 5.

[0042] The positioning ring 52 slides in contact with the top of the wheel frame 2, limiting the depth of the fixed shaft 5 in the insertion hole 21.

[0043] Specifically, a rubber rim 31 is fitted over the roller 3, and several U-shaped openings 32 are provided through the roller 3. At least three U-shaped openings 32 are evenly distributed around the circumference. A locking block 33 is fixedly connected inside each U-shaped opening 32. The locking block 33 engages with the locking strip 41. One end of the locking strip 41 is fixedly connected to the decorative cover 4, and reinforcing ribs 42 are fixedly connected at the connection between the locking strip 41 and the decorative cover 4.

[0044] The rubber wheel rim 31 provides external support and cushioning for the roller 3, improving the wear resistance of the roller 3 body. The decorative cover 4 is engaged with the locking block 33 via the locking strip 41, making it easy to disassemble and replace the decorative cover 4.

[0045] Example 3

[0046] Reference Figure 1-8This is the third embodiment of the present invention. Based on the above two embodiments, in use, the fixing base 1 is fixedly installed on the item being used with screws, the fixing part 6 is snapped into the fixing base 1, one side of the fixing shaft 5 is snapped into the fixing part 6, and the other side of the fixing shaft 5 is connected to the wheel frame 2, thereby realizing the overall connection of the caster and facilitating the use of the caster. When disassembly is required, the fixing part 6 is disengaged from the fixing base 1, and the wheel frame 2 can be disassembled without disassembling the fixing base 1, ensuring the fixation of the installation position, and the disassembly method is also simpler and faster.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable caster comprising a fixing base (1), characterized in that: The fixed seat (1) is clamped with a fixing part (6), one side of the fixing part (6) is clamped with a fixed shaft (5), the other side of the fixed shaft (5) is clamped with a wheel frame (2), both sides of the wheel frame (2) are respectively connected with a roller (3), and the opposite ends of the roller (3) are respectively clamped with a decorative cover (4).

2. A detachable caster according to claim 1, wherein: The four corners of the fixed seat (1) are respectively provided with mounting holes (12).

3. A detachable caster according to claim 1, wherein: The center of the fixed seat (1) is recessed with a plug-in groove (15), the plug-in groove (15) is plug-in matched with the fixing part (6), the inner wall of the plug-in groove (15) is fixedly connected with a plurality of positioning plates (14), and the positioning plates (14) are circumferentially distributed.

4. A detachable caster according to claim 3, wherein: Both sides of the plug-in groove (15) are respectively provided with clamping grooves (13), one end of the clamping groove (13) is provided with a through port (11), and the through port (11) penetrates the fixed seat (1).

5. A detachable caster according to claim 4, wherein: The circumferential side of the fixing part (6) is recessed with a plurality of positioning grooves (61), the positioning grooves (61) are plug-in matched with the positioning plates (14), and the positioning grooves (61) and the positioning plates (14) are one-to-one correspondingly arranged.

6. A detachable caster according to claim 5, wherein: The inside of the fixing part (6) is coaxially fixedly connected with a positioning inner ring (64), one side of the positioning inner ring (64) is sleeved with the fixed shaft (5), both sides of the positioning inner ring (64) are respectively provided with movable grooves (65), the movable grooves (65) are respectively slidably clamped with anti-coming-off blocks (66) and cylindrical clamping blocks (68), the opposite ends of the anti-coming-off blocks (66) and the cylindrical clamping blocks (68) are respectively fixedly connected with both ends of springs (67), the springs (67) are movably arranged in the movable grooves (65), one end of the cylindrical clamping block (68) away from the spring (67) is slidably abutted against a pushing plate (63), the pushing plate (63) is movably arranged on both sides of the fixing part (6), the opposite end faces of the pushing plate (63) are respectively fixedly connected with clamping blocks two (62), and the clamping blocks two (62) are respectively slidably clamped with the clamping grooves (13).

7. A detachable caster according to claim 6, wherein: Both ends of one side of the fixed shaft (5) are respectively provided with anti-coming-off grooves (53), and the anti-coming-off grooves (53) are slidably clamped with the anti-coming-off blocks (66).

8. A detachable caster according to claim 1, wherein: The fixed shaft (5) is fixedly sleeved with a positioning ring (52), and the fixed shaft (5) is provided with an annular groove (51) on the side away from the positioning ring (52).

9. A detachable caster according to claim 1, wherein: One end of the wheel frame (2) is recessed with a plug-in hole (21), the plug-in hole (21) movably arranges a ball (7), and the plug-in hole (21) is plug-in matched with the fixed shaft (5).

10. A detachable caster according to claim 1, wherein: The roller (3) is sleeved with a rubber rim (31), a plurality of U-shaped openings (32) are penetratingly arranged on the roller (3), the U-shaped openings (32) are circumferentially distributed at least three, clamping blocks one (33) are respectively fixedly connected in the U-shaped openings (32), the clamping blocks one (33) are clamped with clamping strips (41), one end of the clamping strip (41) is fixedly connected with the decorative cover (4), and the clamping strip (41) and the decorative cover (4) are connected with the clamping strips (41) and the decorative cover (4) are respectively fixedly connected with reinforcing ribs (42).

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