Trundle connecting structure

Abstract

The utility model provides a trundle connecting structure which comprises a box body and a trundle assembly, the box body is provided with a trundle mounting part, the trundle assembly comprises a connecting piece, a steering piece and a trundle, and the trundle is rotationally connected with the connecting piece through the steering piece; the connecting piece and the trundle mounting part comprise first guide parts which are matched with each other, and the first guide parts are aligned guide parts and are used for guiding and limiting the trundle assembly to a pre-mounting position; the connecting piece and the trundle mounting part comprise third guide parts which are matched with each other, and the third guide parts are plug-in type guide parts and are used for guiding the trundle assembly to the mounting position; the connecting piece and the trundle mounting part comprise locking pieces, the locking pieces are arranged on the connecting piece, and when the trundle assembly reaches the mounting position, the locking pieces automatically lock the trundle assembly; by unlocking the locking member, the caster assembly can be disengaged from the caster mounting portion. According to the trundle connecting structure, dismounting and mounting can be completed without auxiliary tools, and mounting is firm.

Description

Technical Field

[0001] This application relates to the field of luggage technology, and more specifically, to a caster connection structure. Background Technology

[0002] Suitcases, as a convenient travel tool, are widely used. A common suitcase structure features a box with casters fixed to the bottom for support and to reduce drag during movement. However, fixed casters are difficult to replace yourself when damaged and require specialized tools. Meanwhile, with the emergence of consumer demand for customized suitcases, suitcases with easily assembled and disassembled components have become a rising demand in this field. Traditional suitcases are assembled as a whole at the time of purchase, increasing storage space occupied during transportation and placement. Therefore, providing a structure that meets these needs without compromising user experience and assembly stability has become a problem that needs to be solved. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of this application is to provide a caster connection structure that enables quick disassembly and easy installation of casters without the need for tools.

[0004] The caster connection structure provided in this application includes a housing and a caster assembly. The housing has a caster mounting portion. The caster assembly includes a connector, a steering member, and a caster. The caster is rotatably connected to the connector via the steering member. The connector and the caster mounting portion include mutually cooperating first guide portions, which are alignment guide portions that guide and define the caster assembly to a pre-installation position. The connector and the caster mounting portion also include mutually cooperating third guide portions, which are plug-in guide portions that guide the caster assembly to the mounting position. The connector and the caster mounting portion include a locking member disposed on the connector. When the caster assembly reaches the mounting position, the locking member automatically locks the caster assembly. By unlocking the locking member, the caster assembly can be disengaged from the caster mounting portion.

[0005] Furthermore, the connector and caster mounting portion also includes a second guide portion, which is an alignment guide portion and is opposite to the edge of the connector where the first guide portion is located. The first guide portion and the second guide portion guide and define the caster assembly to the pre-installation position.

[0006] Furthermore, the first guide portion includes a first guide wall disposed on the connector and a first guide platform disposed on the caster mounting portion; or the first guide portion includes a first guide wall disposed on the caster mounting portion and a first guide platform disposed on the connector.

[0007] Furthermore, the third guide portion includes a slot disposed on the connector and a plug disposed on the caster mounting portion; or, the third guide portion includes a plug disposed on the connector and a slot disposed on the caster mounting portion.

[0008] Furthermore, a wedge-shaped surface is formed on the top of the third guide portion of the connector, and the inclination direction of the wedge-shaped surface is approximately perpendicular to the insertion direction of the third guide portion, and the caster mounting portion forms a wedge-shaped receiving space to match it.

[0009] Furthermore, the locking element includes a switch located on the connector and a locking hole on the caster mounting portion. When the switch is in the mounting position, it pops into the locking hole and locks the caster assembly. The unlocking switch allows the caster assembly to disengage.

[0010] Furthermore, the locking element includes a hook portion disposed on the connector and a hook hole disposed on the caster mounting portion. The hook portion extends through the wall of the third guide portion and is suspended in the air, with the top end of the hook portion higher than the base surface along the insertion direction.

[0011] Furthermore, the second guide portion includes a guide groove disposed in the connecting portion and a guide protrusion disposed in the caster mounting portion; or the second guide portion includes a guide groove disposed in the caster mounting portion and a guide protrusion disposed in the connecting portion.

[0012] Compared with the prior art, this application has the following beneficial effects:

[0013] 1. The caster connection structure provided in this application can securely install the caster assembly on the housing by setting an insertable third guide and a locking member. The locking member can automatically lock when it reaches the installation position, so that the caster assembly is fixed.

[0014] 2. The caster mounting structure provided in this application requires precise alignment of the caster mounting part and the caster assembly, and the third guide part is often difficult to quickly insert due to the obstruction of the view caused by the shape of the parts when installing the caster assembly. Therefore, the first guide part is provided to achieve the alignment of the third guide part first, so as to facilitate subsequent insertion, installation and locking.

[0015] 3. The caster mounting structure provided in this application, since the first guide part set as a wall achieves a positional limitation perpendicular to the third guide part on the water surface, there may still be swing and alignment problems on the vertical plane. Setting an alignment-type second guide part can further help limit the degree of freedom of the caster assembly on the vertical plane, thereby aligning with the third guide part in one go.

[0016] 4. The caster mounting structure provided in this application includes a locking component that is set as a button switch, which can automatically lock during installation and can be unlocked by pressing from inside the housing and reset after being removed.

[0017] 5. The caster mounting structure provided in this application includes a locking component consisting of a suspended hook that extends from the wall of the third guide portion. The top of the hook is higher than the base surface along the insertion direction, which allows the hook to be in an elastic deformation state during the sliding process from the pre-installation position to the installation position. When the installation position is reached, the hook will spring into the hook hole. At the moment of springing in, the suspension and reset of the wall will generate installation sound and / or vibration feedback, which makes it easy for the user to judge whether the installation is successful.

[0018] 6. The caster mounting structure provided in this application has a clearance portion that can reduce the resistance of the switch button during the caster's sliding process, and does not require separate pre-tightening.

[0019] 7. The caster mounting structure provided in this application has a wedge-shaped surface that can reduce the resistance of the caster assembly when it reaches the pre-installation position perpendicular to the insertion direction, making the entire installation process faster. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of a suitcase including a caster connection structure according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the caster assembly structure disclosed in one embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the caster mounting part structure disclosed in an embodiment of this application, showing a portion of the housing;

[0024] Figure 4 for Figure 2 Front view of the center caster assembly;

[0025] Figure 5 This is a schematic diagram of the internal structure of the caster mounting part disclosed in an embodiment of this application, showing a portion of the housing;

[0026] The diagram shows:

[0027] 10-Box body; 11-Cast wheel mounting section;

[0028] 20-Connector; 21-Castwheel;

[0029] 30 - First guide wall; 31 - First guide platform;

[0030] 40 - Second guide groove; 41 - Second guide protrusion;

[0031] 51 - Slot; 52 - Plug;

[0032] 60-Hook; 61-Switch; 62-Keyhole; 63-Allowing part; Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, all directional indications (such as up, down, left, right, front, back, bottom, etc.) in this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. Furthermore, descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0036] like Figure 1-5 As shown, this embodiment provides a caster connection structure, including a housing 10 and a caster assembly. The caster assembly is securely connected and easy to assemble and disassemble during use.

[0037] like Figure 2-3 As shown, the housing 10 is provided with a caster mounting part 11. The caster assembly includes a connector 20, a pivot, and a caster 21. The connector 20 and the pivot are rotatably connected, and the caster 21 is fixed to the connector 20. The connector 20 has a first guide wall 30, which surrounds the two sides of the connector 20. Correspondingly, a first guide platform 31 is provided on the caster mounting part 11 of the housing 10 to match the guide arc formed by the first guide wall 30.

[0038] The connector 20 has a platform, and a second guide groove 40 is provided below the platform. The second guide groove 40 is provided on the other two sides of the connector 20, and a second guide protrusion 41 is provided on the caster mounting portion 11 of the housing 10. In other embodiments not shown, the second guide groove 40 may be provided on the caster mounting portion 11, and the second guide protrusion 41 may be provided on the connector 20.

[0039] A third guide is provided on the top of the connector 20. The third guide has a slot 51, and the caster mounting part 11 of the corresponding housing 10 has a plug 52. In this embodiment, the third guide has three slots 51, and the caster mounting part 11 has three plugs 52 that can be inserted in the installed state.

[0040] In this embodiment, as Figure 4 As shown, a generally wedge-shaped surface (generally forming a wedge-shaped surface means having a wedge-shaped tendency, which may include continuous or discontinuous surfaces) is formed at the top of the slot 51 of the third guide, and its inclination direction is generally perpendicular to the insertion direction of the slot 51 and the plug 52. The platform of the caster mounting part 11 and the plug 52 form a wedge-shaped receiving space, which matches the wedge-shaped surface. In this embodiment, the wedge-shaped surface is defined by ribs extending from the top of the slot 51. The ribs enhance the support stability of the wedge-shaped surface and save material.

[0041] When installing the caster assembly, before the plug 52 of the third guide enters the mating position with the slot 51, the caster assembly can be easily aligned with the caster mounting portion 11 in a direction approximately perpendicular to the insertion direction of the plug 52, guided by the wedge-shaped surface. At this time, a portion of one side of the second guide protrusion 41 and a portion of one side of the first guide wall 30 can first abut against the caster mounting portion 11, bringing the caster assembly to the pre-installation position. After the slot 51 of the third guide and the plug 52 of the housing 10 are aligned, the caster assembly is pushed in until it reaches the installation position.

[0042] like Figure 2 , 4 As shown, the connector 20 and the caster mounting portion 11 also include a hook 60 and a switch 61. The hook 60 is suspended via the wall of the third guide. The caster mounting portion 11 of the housing 10 is provided with a hook hole 62, and the hook 60 and the hook hole 62 cooperate with each other in the installed state. The top of the hook 60 is higher than the base surface formed by the table surface along the insertion direction, which allows the hook 60 to return from its elastic deformation state to its original state when it moves from the pre-installed position to the installed position, springing into the hook hole 62 and generating vibration and sound feedback.

[0043] The switch 61 is a button with a raised design. The corresponding caster mounting part 11 is provided with a locking hole 62 and a clearance part 63, the clearance part 63 being a guide surface. The button of the switch 61 is a spring-loaded button, which is inserted into the locking hole 62 in the installed state. Pressing the button of the switch 61 disengages it from the locking hole 62, and the switch 61 springs back to its initial position after the caster assembly is removed.

[0044] In other embodiments not shown, the third guide can be a connector plug with a corresponding slot on the caster mounting portion (i.e., the positions of the plug and slot are interchangeable). The third guide is not limited to a plug / slot form and can be a structure that restricts the five degrees of freedom of the caster assembly, excluding the insertion direction, such as a guide rail / guide groove. The hook 60 and the switch 61 are preferably located on the connector 20 to facilitate locking and unlocking from inside the housing 10.

[0045] When the caster assembly reaches the installation position, the hook 60 enters the hook hole 62 through the wedge-shaped space of the caster mounting part 11, and the top of the hook 60 above the table surface springs into the hook hole 62; at the same time, the button of the switch 61 enters the lock hole 62, achieving a fully locked state.

[0046] When disassembling the caster assembly, press the button on switch 61 and hook 60 from inside the housing 10; pull the caster assembly to detach it from the housing 10.

[0047] The specific embodiments of this application have been described above. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application.

Claims

1. A caster connection structure, comprising a housing and a caster assembly, the housing having a caster mounting portion, the caster assembly comprising a connector, a steering member, and a caster, the caster being rotatably connected to the connector via the steering member, characterized in that: The connector and caster mounting portion include a first guide portion that cooperates with each other. The first guide portion is an alignment guide portion that guides and defines the caster assembly to a pre-installation position. The connector and caster mounting part include a mutually cooperating third guide part, which is a plug-in guide part, to guide the caster assembly to the mounting position; The connector and caster mounting part include a locking element, which is disposed on the connector. When the caster assembly reaches the mounting position, the locking element automatically locks the caster assembly. By unlocking the locking element, the caster assembly can be disengaged from the caster mounting part.

2. The caster connection structure according to claim 1, characterized in that: The connector and caster mounting portion further includes a second guide portion, which is an alignment guide portion and is opposite to the edge of the connector where the first guide portion is located. The first and second guide portions guide and define the caster assembly to the pre-installation position.

3. The caster connection structure according to claim 1, characterized in that: The first guide portion includes a first guide wall disposed on the connector and a first guide platform disposed on the caster mounting portion; Alternatively, the first guide portion may include a first guide wall disposed on the caster mounting portion and a first guide platform disposed on the connector.

4. The caster connection structure according to claim 1, characterized in that: The third guide portion includes a slot disposed on the connector and a plug disposed on the caster mounting portion; Alternatively, the third guide section includes a plug disposed on the connector and a slot disposed on the caster mounting section.

5. The caster connection structure according to claim 1, characterized in that: A wedge-shaped surface is formed at the top of the third guide portion of the connector, and the inclination direction of the wedge-shaped surface is approximately perpendicular to the insertion direction of the third guide portion. The caster mounting portion forms a wedge-shaped receiving space to match it.

6. The caster connection structure according to claim 1, characterized in that: The locking mechanism includes a switch located on the connector and a locking hole on the caster mounting portion. When the switch is in the mounting position, it pops into the locking hole and locks the caster assembly. The unlocking switch allows the caster assembly to disengage.

7. The caster connection structure according to claim 1, characterized in that: The locking element includes a hook portion provided on the connector and a hook hole provided on the caster mounting portion. The hook portion extends through the wall of the third guide portion and is suspended in the air. The top of the hook portion is higher than the base surface along the insertion direction.

8. The caster connection structure according to claim 2, characterized in that: The second guide portion includes a guide groove provided in the connecting portion and a guide protrusion provided in the caster mounting portion; The second guide portion includes a guide groove provided in the caster mounting portion and a guide protrusion provided in the connecting portion.

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