Quick-load table

Abstract

In order to solve the problem in the prior art that the connection between the accessories on the table is prone to loosening and the loading and unloading efficiency is low, the present invention provides a quick-loading and unloading table, including a connecting assembly connecting a first accessory and a second accessory, the connecting assembly including a connecting piece and a pre-tightening piece, the connecting piece including a connecting portion and an operating portion, the operating portion having a locking position and an unlocking position, the orthographic projection of the operating portion in the locking position on the first accessory partially overlaps with the orthographic projection of the second accessory on the first accessory, the pre-tightening piece is clamped between the first accessory and the second accessory and can apply a pre-tightening force to the connecting piece under pressure; the orthographic projection of the operating portion in the unlocking position on the first accessory does not overlap with the orthographic projection of the second accessory on the first accessory. The present invention not only realizes the function of quick disassembly and assembly, but also provides a pre-tightening force for the connecting piece during connection, thereby enhancing the connection strength and preventing the loosening of the connecting assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting tables, in particular to a table that can be quickly assembled and disassembled. Background Art

[0002] At present, screws are widely used in assembly operations because they have the effect of quick assembly and quick disassembly. For example, the table top and table frame of an assembled table are generally connected by screws. In actual use, due to vibration during use, the screws will become loose after a long time, causing shaking between the table top and the table frame, which directly affects the use effect of the product. Moreover, when assembling with screws, gaskets and other pre-tightening parts are generally pressed on the end face away from the joint surface of the component through the nut of the screw. In order to ensure the connection effect of the table top and the table frame, it is generally necessary to fully screw the threaded section of each screw into the table top or the table frame. Moreover, when disassembling the table top and the table frame, it is generally necessary to completely detach the screws from the two connected objects before the two connected objects can be disassembled. This results in that if two components connected by screws need to be disassembled, all connecting screws need to be completely removed before it can be realized. This undoubtedly increases a lot of workload and causes low efficiency in loading and unloading of the table. Summary of the Invention

[0003] In order to solve the problem in the prior art that the connections between accessories on the table are prone to loosening and the loading and unloading efficiency is low, the present invention provides a quick-loading and unloading table, which not only can realize the quick disassembly and assembly function, but also provides a pre-tightening force for the connecting parts during connection, thereby enhancing the connection strength and preventing the connecting parts from loosening.

[0004] The present invention provides a quick-assemble and disassemble table, comprising:

[0005] a first accessory and a second accessory; and,

[0006] a connecting assembly comprising a connecting member and a pre-tightening member, wherein the connecting member comprises a connecting portion and an operating portion provided on the connecting portion, the connecting portion being connected to the first accessory and allowing the operating portion to switch between a locked position and an unlocked position in a connected state;

[0007] The orthographic projection of the operating part in the locked position on the first accessory partially overlaps with the orthographic projection of the second accessory on the first accessory, and the side of the second accessory facing away from the first accessory is stopped by the operating part. The preload member is clamped between the first accessory and the second accessory to generate elastic deformation, and the elastic deformation of the preload member applies a preload force to the connecting part through the second accessory; the orthographic projection of the operating part in the unlocked position on the first accessory does not overlap with the orthographic projection of the second accessory on the first accessory, so as to release the stop of the second accessory by the operating part.

[0008] In this technical solution, the connecting assembly is used for the rapid assembly and disassembly of a first accessory and a second accessory. In the locked position, the first accessory and the second accessory are stably connected by the connection between the connecting portion and the first accessory and the stopping effect of the operating portion on the second accessory. The pre-tightening member is located between the first accessory and the second accessory. Unlike a conventional screw connection (where the gasket is generally pressed against the second accessory), the pre-tightening member is mutually squeezed by the first accessory and the second accessory during the connection process. The pre-tightening member undergoes elastic deformation under the mutual squeezing force, which in turn reacts to the operating portion of the connecting member through the second accessory to pre-tighten the connecting member. This pre-tightening force can improve the connection strength of the connecting member and reduce the possibility of loosening at the connection between the connecting portion and the first accessory. Moreover, the pre-tightening member is located between the first accessory and the second accessory. During disassembly, the operating portion releases the stop on the second accessory. The rebound force exerted by the pre-tightening member on the second accessory helps separate the second accessory from the first accessory, reducing the difficulty of disassembly.

[0009] In addition, the connecting piece in the present technical solution also has an unlocking position. In the unlocking position, the first accessory and the second accessory can be quickly disassembled, wherein the unlocking position can realize the disassembly of the second accessory when the connecting piece is connected to the first accessory. Compared with the ordinary screw assembly connection, there is no need to completely remove the connecting piece from the first accessory. It is only necessary to switch the operating part of the connecting piece to the unlocking position, which improves the disassembly efficiency. This can also avoid the need to carry a large number of connecting components during the assembly process, causing inconvenience in operation and easy loss of connecting components.

[0010] Furthermore, the operating part slides along the radial direction of the connecting part and switches between the locked position and the unlocked position; or, the operating part can rotate about the axis of the connecting part and switch between the locked position and the unlocked position; or, the operating part is configured as a cam component and rotates the connecting part in an eccentric manner.

[0011] In this technical solution, different operating modes for the operating portion to switch between the locked position and the unlocked position are provided. The operating portion can switch between the locked position and the unlocked position by sliding or rotating, which has a wider range of applications.

[0012] Furthermore, the connecting portion is threadedly connected to the first accessory. The threaded connection allows the connecting assembly to be detachably connected to the first accessory, making assembly and disassembly easy. Furthermore, the locking pressure during assembly of the first and second accessories can be varied according to assembly requirements, thereby improving the reliability of the connection between the first and second accessories.

[0013] Furthermore, the operating portion can drive the connecting portion to rotate. The operating portion is not only a component that drives the connecting portion to rotate, but also a component that switches the connecting assembly between a locked state and an unlocked state, making the overall structure of the connecting assembly more compact.

[0014] Furthermore, a mounting hole is provided on the second accessory; the operating portion in the locked position is stopped on the second accessory around the mounting hole; and the operating portion in the unlocked position can pass through the mounting hole to allow the second accessory to be removed.

[0015] In this technical solution, when in the locking position, the connecting piece passes through the mounting hole, so that the operating part can stop and lock the second accessory from the middle position of the second accessory. In this way, when in the locking state, the second accessory is prevented from tilting when subjected to the pressure of the operating part, making the locking state of the second accessory more stable.

[0016] Furthermore, the preload member is a coil spring or an elastic support sleeve.

[0017] In this technical solution, a single pre-tightening member is used to pre-tighten the connecting member, wherein a coil spring is simple in structure and convenient in arrangement; an elastic support sleeve is used. Due to the structural characteristics of the elastic support sleeve itself, when in the locked state, the elastic support sleeve is clamped between the first accessory and the second accessory, so that the elastic support sleeve increases the contact area between the first accessory and the second accessory, thereby improving the stability of the joint.

[0018] Furthermore, the preload element includes a coil spring and a support sleeve, with the coil spring being pressed against the first or second accessory by the support sleeve. This technical solution provides a new structural form of the preload element, consisting of two components: a coil spring and a support sleeve. The coil spring is used to provide a preload force in the locked state, thereby improving the connection strength of the connector. In actual use, the installation position of the second accessory can be determined by the contact between the two ends of the support sleeve and the first and second accessories.

[0019] Furthermore, in the locked state, two ends of the support sleeve abut against the first accessory and the second accessory respectively.

[0020] In this technical solution, both ends of the support sleeve abut against the first accessory and the second accessory at the same time in the locked state, thereby improving the stability of the connection between the first accessory and the second accessory, and the support sleeve can serve as a reference for whether the first accessory and the second accessory are pressed into place in the locked state.

[0021] Furthermore, the coil spring is built into the support sleeve, and the connecting portion passes through the coil spring and the support sleeve.

[0022] In this technical solution, the coil spring is built into the support sleeve. In the locked state, the support sleeve protects the spring and cooperates with the penetrating connection part to limit the range of movement of the coil spring, preventing the spring from being compressed and twisted, thereby providing stable and reliable preload force.

[0023] Furthermore, the support sleeve can produce elastic deformation, and the connecting component has a primary preload stroke and a secondary preload stroke:

[0024] In the first-level preload stroke, the coil spring is compressed, and a gap is provided between the support sleeve and the first accessory or the second accessory;

[0025] During the secondary preload stroke, the coil spring and the support sleeve are synchronously compressed by the first accessory and the second accessory.

[0026] In this technical solution, segmented pre-tightening is adopted, and only the coil spring is involved in the first-level pre-tightening stroke, which is convenient for installing accessories. In the second-level pre-tightening stroke, the coil spring and the support sleeve are compressed together to enhance the pre-tightening force. On the one hand, it can increase the connection strength of the connection part, and on the other hand, it is beneficial for the operating part to press against the accessory to prevent it from loosening.

[0027] Furthermore, the first accessory is a table top, the second accessory is a table frame supporting the table top, and the connecting assembly is pre-installed on the table top, and the table frame and the table top are quickly assembled and disassembled through the connecting assembly. The connecting assembly is pre-installed on the table top, which reduces the workload of finding the connection position during assembly. The connecting assembly is integrated with the table top to avoid loss of the connecting assembly. The table frame and the table top can be connected without screws, which improves the overall appearance of the table. Moreover, during assembly and disassembly, there is no need to remove the connecting assembly, which improves the efficiency of assembly and disassembly of the table.

[0028] Furthermore, the table includes a table top and a table frame supporting the table top, the table frame includes two table leg assemblies and a crossbeam connecting the two, the connecting assembly is pre-installed on the crossbeam, and the table leg assemblies and the crossbeam are quickly assembled and disassembled through the connecting assembly. This facilitates the rapid positioning of the table leg assemblies, realizes the rapid assembly and disassembly of the table leg assemblies and the table frame bracket, and facilitates assembly and maintenance.

[0029] Furthermore, the crossbeam includes a first crossbeam and a second crossbeam that are mutually telescopically connected, and the connecting assembly is connected to one of the first crossbeam and the second crossbeam to achieve positioning of the two after they are telescoped. This allows for rapid positioning of the first and second crossbeams after they are telescoped, and the telescopic structure can provide stable support for tabletops of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1This is an overall structural diagram of a table according to one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of a connection assembly according to one embodiment of the present invention connecting a first accessory and a second accessory in a locked state;

[0033] Figure 3 is an assembly structure diagram of a connection component according to one embodiment of the present invention;

[0034] Figure 4 This is an exploded view of the components of a connection assembly according to one embodiment of the present invention;

[0035] Figure 5 This is a structural diagram of a connector operating portion provided with a screwing head and a swing arm in one embodiment of the present invention;

[0036] Figure 6 This is a structural diagram of an operating portion of a connecting member of one embodiment of the present invention being a cam handle;

[0037] Figure 7 This is a schematic diagram of a connector according to one embodiment of the present invention, in which the operating portion comprises a fixed head and a telescopic head, and the mounting hole comprises a circular hole structure;

[0038] Figure 8 This is a schematic diagram of the structure of one embodiment of the present invention, in which the mounting hole is "L"-shaped and the operating portion is provided with an operating lever and a blocking lever;

[0039] Figure 9 This is a schematic diagram of the structure of one embodiment of the present invention, in which the mounting hole is in a "Z" shape and the operating portion is provided with an operating lever and a blocking lever;

[0040] Figure 10 This is a schematic diagram of the pre-tightening process when the support sleeve and the coil spring are connected in parallel in one embodiment of the present invention;

[0041] Figure 11 This is a schematic diagram of the overall structure of a table according to one embodiment of the present invention;

[0042] Figure 12 This is a structural diagram of a table top and a table frame connected via a connecting assembly in one embodiment of the present invention;

[0043] Figure 13 This is a structural diagram of one embodiment of the present invention, in which a first crossbeam and a second crossbeam are connected through a connecting assembly to achieve positioning after extension and retraction.

[0044] In the figure,

[0045] 100, first accessory; 200, second accessory; 201, mounting hole;

[0046] 300, connecting assembly; 301, connecting piece; 302, preloaded piece; 3021, coil spring; 3022, support sleeve; 303, connecting part; 304, operating part; 3041, screwing head; 3042, swing arm; 3043, fixed head; 3044, telescopic head; 3045, spring; 3046, operating lever; 3047, stop lever; 3048, spring;

[0047] 401, table top; 402, crossbeam; 4021, first crossbeam; 4022, second crossbeam; 4023, flange; 4024, guide hole;

[0048] 501, table frame; 5011, side bracket; 5012, baffle; 5013, recess; 502, table leg assembly. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] One embodiment of the present invention is as follows: Figure 1-4 , provides a quick-assemble and disassemble table, wherein the table includes a first accessory 100, a second accessory 200 and a connecting assembly 300, the connecting assembly 300 includes a connecting piece 301 and a pre-tightening piece 302, the connecting piece 301 includes a connecting portion 303 and an operating portion 304 that can drive the connecting portion 303 to rotate, the connecting portion 303 is connected to the first accessory 100, and in the connected state, the operating portion 304 is allowed to switch between a locked position and an unlocked position; the orthographic projection of the operating portion 304 in the locked position on the first accessory 100 is aligned with the projection of the second accessory 200 on the first accessory The orthographic projection of the operating part 304 on the first accessory 100 partially overlaps, and the side of the second accessory 200 facing away from the first accessory 100 is stopped by the operating part 304. The pre-tightening member 302 is clamped between the first accessory 100 and the second accessory 200 to generate elastic deformation. The elastic deformation of the pre-tightening member 302 applies a pre-tightening force to the connecting member 301 through the second accessory 200; the orthographic projection of the operating part 304 in the unlocked position on the first accessory 100 does not overlap with the orthographic projection of the second accessory 200 on the first accessory 100, so as to release the stop of the second accessory 200 by the operating part 304.

[0051] In this embodiment, during assembly, the connector 301 is pre-installed on the first accessory 100 through the connecting portion 303. When it is necessary to connect with the second accessory 200, the operating portion 304 is switched to the locking position. Since in the locking position, the orthographic projection of the operating portion 304 on the first accessory 100 partially overlaps with the orthographic projection of the second accessory 200 on the first accessory 100, the side of the second accessory 200 facing away from the first accessory 100 is stopped by the operating portion 304. In this way, the second accessory 200 cannot move away from the first accessory 100 under the stop of the operating portion 304. With the connection structure of the connector 301 and the first accessory 100, the second accessory 200 can be pressed tightly against the first accessory 100 through the operating portion 304. On an accessory 100, a stable connection between the first accessory 100 and the second accessory 200 is achieved, wherein the pre-tightening member 302 is located between the first accessory 100 and the second accessory 200, which is different from the position of the gasket in the ordinary screw connection in the prior art (the position of the gasket is generally pressed on the second accessory 200). During the connection between the first accessory 100 and the second accessory 200, the pre-tightening member 302 is squeezed to produce elastic deformation, and the elastic deformation reacts to the operating part 304 of the connecting member 301 through the second accessory 200 to achieve pre-tightening of the connecting member 301. The pre-tightening force can improve the connection strength of the connecting member 301 and reduce the possibility of loosening at the connection between the connecting part 303 and the first accessory 100. In addition, in the prior art, when ordinary screws are used for connection, rust and long-term pressure between the first accessory 100 and the second accessory 200 will cause adhesion between the first accessory 100 and the second accessory 200. When the first accessory 100 and the second accessory 200 are disassembled, it is not easy for the two to separate from each other. In this embodiment, during disassembly, the operating part 304 releases the stop on the second accessory 200, and the rebound force applied to the second accessory 200 by the pre-tightening part 302 helps to separate the second accessory 200 and the first accessory 100 from each other, thereby reducing the difficulty of disassembly.

[0052] In addition, the connecting piece 301 in this embodiment also has an unlocking position. In the unlocking position, the second accessory 200 can be disassembled when the connecting piece 301 is connected to the first accessory 100. Compared with the ordinary screw assembly connection in the prior art, there is no need to completely disassemble the connecting piece 301 from the first accessory 100. The second accessory 200 can be disassembled by simply switching the operating part 304 of the connecting piece 301 to the unlocking position, thereby improving the disassembly efficiency. After the connecting component 300 is pre-installed on the first accessory 100 in this embodiment, no matter when it is subsequently assembled or disassembled with the second accessory 200, there is no need to remove the connecting component 300 from the first accessory 100. This can also avoid the need to carry a large number of connecting components 300 during the assembly process, which causes inconvenience in operation and easy loss of the connecting components 300.

[0053] Regarding the connection structure between the connecting portion and the first accessory, one embodiment of the present invention is that the connecting portion is threadedly connected to the first accessory, see the attached Figure 3 、 4 , 5, 6. The connecting component is pre-installed on the first accessory through a threaded connection to achieve a detachable connection between the connecting component and the first accessory. Moreover, during the locking process of the first accessory and the second accessory, the locking pressure can be adjusted by screwing the connecting piece to achieve a more stable connection effect.

[0054] Regarding the connection structure between the connecting part and the first accessory, one embodiment of the present invention is that an axially fixed and circumferentially rotating connecting member structure is adopted between the connecting part and the first accessory. At this time, the connecting member can rotate freely but will not separate from the first accessory. There is no need to worry about the problem of the connecting component being separated from the first accessory due to adjustment during the assembly process. Moreover, such a connecting member structure is convenient for adjusting the circumferential position of the connecting member according to installation requirements while ensuring the connection effect between the connecting member and the first accessory.

[0055] Regarding the connection structure between the connecting portion and the first accessory, one embodiment of the present invention is that the connecting portion is fixedly connected to the first accessory. In this embodiment, the connecting portion can be fixed to the first accessory by riveting, welding, or other means. Of course, the connecting portion and the first accessory can also be designed as an integral structure.

[0056] Regarding the connection structure between the operating portion and the connecting portion, one embodiment of the present invention is that the operating portion and the connecting portion are movably connected. The specific movably connected manner includes: 1. See the attached Figure 7 The sliding of the operating portion along the radial direction of the connecting portion can switch the operating portion between the locked position and the unlocked position. The operating portion includes an operating rod slidably connected to the connecting portion in the radial direction of the connecting portion. A spring is connected between the operating rod and the connecting portion. The switching of the operating portion between the locked position and the unlocked position is achieved by controlling the extension and contraction of the operating rod; 2. See attached Figure 5 The operating portion rotates around the rotation axis of the connecting portion to switch between the locked position and the unlocked position. The specific structure description is described in the subsequent description. 3. See the attached Figure 6 The operating portion is provided with a cam handle rotatably connected to one end of the connecting portion, with the rotation axis of the cam handle being perpendicular to the rotation axis of the connecting portion. A detailed structural description is provided below. In this embodiment, the operating portion and the connecting portion are flexibly connected, allowing the position of the operating portion to be independently adjusted without being restricted by the connection between the connecting portion and the first accessory, resulting in greater flexibility and convenience.

[0057] In the aforementioned embodiments of the movable connection between the operating portion and the connecting portion, the connecting portion can be threadedly connected to the first accessory, or the connecting portion and the first accessory can be connected in an axially fixed and circumferentially rotating manner, or the connecting portion and the first accessory can be fixedly connected. It can be seen that the movable connection between the operating portion and the connecting portion is adaptable to various connection structures between the connecting portion and the first accessory, thus having a wider range of applications.

[0058] Regarding the connection structure between the operating part and the connecting part, one embodiment of the present invention is that the operating part and the connecting part constitute a fixed connection structure. In this embodiment, the number of components of the connecting assembly is reduced. At this time, a threaded connection can be adopted between the connecting part and the first accessory, or an axially fixed and circumferentially rotating connection structure can be adopted between the connecting part and the first accessory; but the connecting part and the first accessory cannot be fixedly connected. This embodiment can improve the structural compactness of the connecting member. The operating portion and the connecting portion can be rotated synchronously, making operation convenient. For example, when the connecting portion 303 is threadedly connected to the first accessory, since the screwing process of the threaded connection is also a rotational operation, the operation mode of switching between the unlocked position and the locked position can be integrated with the threaded connection mode of the connecting portion 303 and the first accessory 100 into a single rotational operation. The rotating operating portion 304 can not only realize the threaded connection of the connecting portion 303 and the first accessory 100, but also realize the switching between the unlocked position and the locked position, making the overall structure of the connecting assembly 300 more compact and easier to operate. In addition, the purpose of switching from the locked position to the unlocked position is to remove the second accessory 200. In actual use, the rotation direction of loosening the threaded connection of the connecting portion 303 is set to be consistent with the rotation direction of rotating from the locked position to the unlocked position. The threaded connection can be loosened at the same time as unlocking, making removal of the second accessory 200 more convenient. Correspondingly, during the locking process, the rotation direction of tightening the threaded connection of the connecting portion 303 is set to be consistent with the rotation direction of rotating from the unlocked position to the locked position, facilitating stable connection of the second accessory 200.

[0059] Specifically, the rotation of the operating portion 304 of the present invention can be synchronized with the connection portion 303, and the operating portion 304 can also rotate independently relative to the connection portion 303 (applicable to a structure in which the connection portion 303 and the first accessory 100 are riveted, welded, or the two are designed as one body), see the attached Figure 5The cam 3042 is rotated to rotate around the screw head 3041 so that the connecting member 301 can be switched between the locked and unlocked positions.

[0060] In addition, the present invention discloses the following embodiments for the specific switching structure of the connecting member in the locked position and the unlocked position, see the attached Figure 6 The rotation axis of the operating part is perpendicular to the axis of the connecting part. At this time, the operating part is designed as a cam handle structure. The cam handle can be rotated to a position perpendicular to the axis of the connecting part. At this time, one end of the cam handle presses on the second accessory 200 to form a stop for the second accessory 200, corresponding to the locked position. The cam handle can be rotated to a position colinear with the axis of the connecting part 303, releasing the stop on the second accessory, corresponding to the unlocked position.

[0061] The structure of the operating part of the present invention has various forms. Figure 5 The operating portion protrudes radially outward along one side of one end of the connecting portion, and the operating portion and the connecting piece form an "L" shape.

[0062] See attached Figure 3 、 4 The operating portion protrudes radially outward symmetrically along both sides of one end of the connecting portion, and the operating portion and the connecting piece form a "T" shape.

[0063] See attached Figure 7The operating portion 304 is a structure that protrudes outward in the radial direction of the connecting portion 303 and can be extended and retracted in the radial direction of the connecting portion 303. In this embodiment, the operating portion 304 includes a fixed head 3043 and a retractable head 3044. Of course, the retractable head 3044 can also be directly connected to the connecting portion 303. A spring 3045 is connected between the retractable head 3044 and the fixed head 3043. In this embodiment, the operating portion 304 does not need to be rotated to achieve the switching between the unlocked position and the locked position. It only needs to retract the retractable head 3044. That is, when the telescopic head 3044 is extended, the telescopic head 3044 can stop the second accessory 200, corresponding to the locked position; when the telescopic head 3044 is retracted, the telescopic head 3044 cannot stop the second accessory 200, corresponding to the unlocked position. In this embodiment, one end of the telescopic head 3044 can be designed as a sloped structure to facilitate the operating part 304 to pass through the second accessory 200 during operation. Through the sloped design, when the second accessory 200 approaches the first accessory 100, the telescopic head 3044 can be retracted by squeezing.

[0064] During the assembly process, the operating portion 304 of the connecting assembly 300 can stop the edge of the second accessory 200 to achieve the connection between the first accessory 100 and the second accessory 200. In order to achieve a more stable connection effect, one embodiment of the present invention is to refer to the attached Figure 2 , a mounting hole is provided on the second accessory 200; the operating portion 304 in the locked position stops on the second accessory 200 around the mounting hole; the operating portion 304 in the unlocked position can pass through the mounting hole to allow the second accessory 200 to be removed. In this embodiment, when in the locked position, the connecting member 301 passes through the mounting hole, allowing the operating portion 304 to stop and lock the second accessory 200 from the middle position of the second accessory 200. In this way, when in the locked state, the second accessory 200 is prevented from tilting when subjected to pressure from the operating portion 304, making the locked state of the second accessory 200 more stable. The shape of the mounting hole can be specifically designed according to the different structures of the operating portion 304;

[0065] For details, see the attached Figure 2 The mounting hole is a waist-shaped hole or a long hole, and the shape of the operating portion can also be designed to be square, triangular, waist-shaped, or oval, as well as other shapes with different aspect ratios.

[0066] See attached Figure 7, the mounting hole is a circular hole. At this time, the operating part 304 is the retractable structure mentioned above. When the retractable head 3044 is in the extended state, the maximum distance from the axis of the connecting part 303 is greater than the diameter of the mounting hole. At this time, in the locked state, the retractable head 3044 can be stopped on the second accessory 200 around the mounting hole. When unlocking is required, the retractable head 3044 is pressed to retract the retractable head 3044 so that the retractable head 3044 is retracted into the range of the mounting hole, thereby releasing the stopping effect on the second accessory 200. In this embodiment, when the connecting part 303 and the first accessory 100 are threadedly connected, the stop on the second accessory 200 will not be released unless the retractable head 3044 is pressed to retract. During the process of screwing the connecting part 303 to tighten the thread, there is no need to worry about the operating part 304 accidentally entering the unlocked position and causing a misinterpreted locking action.

[0067] See attached Figure 8 、 9 , the mounting hole is a special-shaped hole, and its cross-section is "L" shaped ( Figure 8 ) or "Z" shape ( Figure 9), in this embodiment, the connecting portion 303 is threadedly connected to the first accessory 100, and the shape of the operating portion 304 is similar to the cross-sectional shape of the mounting hole 201. The operating portion 304 includes an operating rod 3046 and a blocking rod 3047. The blocking rod 3047 is slidably mounted on the side wall of the end portion of the operating rod 3046 and a spring 3048 is connected to the operating rod 3046. During the assembly process, it is necessary to tighten the thread of the operating portion 304 to achieve a stable connection between the first accessory 100 and the second accessory 200. During this process, the operating portion 304 may pass through the unlocked position multiple times. At the moment when the operating portion 304 is in the unlocked position, the second accessory 200 may pass through the second accessory 200 under the action of the preload 302 and its own elasticity. If the second accessory 200 is pressed manually for locking, it is relatively laborious. Therefore, in this embodiment, the operating rod 304 is used to tighten the screw thread of the connecting portion 303. The design of 046 and stop rod 3047 can avoid mislocking during the screwing process, wherein a spring 3048 is connected between the stop rod 3047 and the operating rod 3046. In the natural state, the stop rod 3047 extends a short distance from the operating rod 3046. At this time, if the operating part 304 is in the unlocked position, it can be unlocked normally. During the screwing process, the operator's hands will pinch the two sides of the operating rod 3046 to screw. At this time, the operator will make one end of the stop rod 3047 extend a farther distance from the operating rod 3046. The extended length of the stop rod 3047 will still form a stopping effect on the second accessory 200 when the operating part 304 is in the unlocked position. At this time, during the screwing process, there is no need to worry about the problem of mislocking. When it is really necessary to unlock, when it is rotated to the unlocked position, you only need to loosen the operating part 304, and the stop rod 3047 will automatically reset to the initial state under the action of the spring 3048, and normal unlocking can be achieved. In this embodiment, the operating part 304 is designed to be a structure composed of an operating rod 3046 and a blocking rod 3047. The blocking rod 3047 is designed to be a retractable structure through a spring 3048. The operator's twisting action during operation is comprehensively considered (generally, the operator pinches the two ends of the operating rod 3046 for twisting, as shown by the arrow position in the figure), avoiding the problem of mislocking during the twisting process, and will not affect the normal unlocking operation. The spring 3048 realizes the automatic reset function of the blocking rod 3047 position, and does not require additional operation by the operator. It is easy to use. The dotted position in the middle is one of the locking positions of the operating part.

[0068] One embodiment of the present invention regarding the disposition of the pre-tightening member 302 is that the pre-tightening member 302 is a coil spring or an elastic support sleeve.

[0069] In this embodiment, a single pre-tightening member 302 is used to pre-tighten the connecting member 301, wherein the pre-tightening member 302 can be a coil spring or an elastic support sleeve, or other elastic members such as a disc spring. The coil spring has a simple structure and is easy to arrange; the elastic support sleeve is used. Due to the structural characteristics of the elastic support sleeve's own sleeve body, when in the locked state, the elastic support sleeve is clamped between the first accessory 100 and the second accessory 200, so that the contact between the elastic support sleeve and the first accessory 100 and the second accessory 200 is surface contact. The surface contact can improve the stability of the joint, ensure the posture of the pre-tightening member 302, avoid the tilt of the pre-tightening member 302, and improve the stability of the connection between the first accessory 100 and the second accessory 200.

[0070] One embodiment of the present invention is, see Figure 4 The pre-tightening member 302 includes a coil spring 3021 and a support sleeve 3022 . The coil spring 3021 is pressed against the first accessory 100 or the second accessory 200 by the support sleeve 3022 .

[0071] In this embodiment, the support sleeve 3022 can be a rigid component or an elastic component. When the support sleeve 3022 is a rigid component, the coil spring 3021 is used to provide a preload force for the connector 301 when the connector 301 is in the locked state. In the locked state, the two ends of the support sleeve 3022 can respectively abut the first accessory 100 and the second accessory 200. In this way, the support sleeve 3022 can also improve the stability of the connection between the first accessory 100 and the second accessory 200 through surface contact with the first accessory 100 and the second accessory 200. Moreover, when the two ends of the support sleeve 3022 in the locked state abut the first accessory 100 and the second accessory 200, respectively, the coil spring 3021 can no longer be compressed, thereby achieving an upper limit for the preload force. In addition, the rigid structure of the support sleeve 3022 can leave a certain gap between the first accessory 100 and the second accessory 200, which meets the need for reserved space on the table.

[0072] Furthermore, the support sleeve 3022 is a rigid structure, the coil spring 3021 is built into the support sleeve 3022, and the connecting portion passes through the coil spring 3021 and the support sleeve 3022. The coil spring 3021 is built into the support sleeve 3022. In the locked state, the two ends of the support sleeve 3022 can respectively abut the first accessory 100 and the second accessory 200. This prevents the exposed spring from being visible from the outside, thereby improving the overall appearance of the table. The connecting portion passes through the coil spring 3021 and the support sleeve 3022, improving the integrity of the connection assembly 300. The locking force of the connecting portion and the preload force of the preload member 302 are collinear, which can improve the stability of the overall structure. In addition, the connecting portion and the support sleeve 3022 have a dual internal and external limiting effect on the coil spring 3021, preventing the coil spring 3021 from tilting and twisting during the compression process.

[0073] When the support sleeve 3022 is an elastic component, the coil spring 3021 and the support sleeve 3022 jointly provide a pre-tightening force for the connector 301 when it is in a locked state, wherein the support sleeve 3022 and the coil spring 3021 can be connected in series or in parallel. When the support sleeve 3022 and the coil spring 3021 are connected in series, during the locking process, the support sleeve 3022 and the coil spring 3021 are compressed synchronously. In actual design, the support sleeve 3022 and the coil spring 3021 can be designed with different elastic coefficients. In this embodiment, the pre-tightening force generated by the same compression distance is greater, which can further improve the connection strength of the connector 301. Moreover, compared with the rigid structure of the support sleeve 3022, the distance between the first accessory 100 and the second accessory 200 has more adjustment possibilities.

[0074] When the support sleeve 3022 can produce elastic deformation and the coil spring 3021 is connected in parallel with the support sleeve 3022, the connecting assembly 300 has a primary preload stroke and a secondary preload stroke: see the attached Figure 10 In the first-stage preload stroke, the coil spring 3021 is compressed, and a gap is provided between the support sleeve 3022 and the first accessory 100 or the second accessory 200 ; in the second-stage preload stroke, the coil spring 3021 and the support sleeve 3022 are synchronously compressed by the first accessory 100 and the second accessory 200 .

[0075] In this embodiment, in the first-level preload stroke, only the coil spring 3021 is compressed, and a gap is provided between the support sleeve 3022 and the first accessory 100 or the second accessory 200. The support sleeve 3022 will not be compressed, and the preload force of the connector 301 is provided only by the elastic deformation of the coil spring 3021. In the first-level preload stroke, the adjustment of the preload force changes linearly (the magnitude of the preload force is proportional to the displacement of the preload stroke). The preload force at this time is relatively small and easy to control. The first-level preload stroke continues until the gap between the support sleeve 3022 and the first accessory 100 or the second accessory 200 is eliminated. When the gap between the support sleeve 3022 and the first accessory 100 or the second accessory 200 is eliminated, the second preload stroke is entered. In the secondary preload stroke, the two ends of the support sleeve 3022 respectively abut the first accessory 100 and the second accessory 200. At this time, surface contact is formed between the support sleeve 3022 and the first accessory 100 and the second accessory 200, making the connection between the first accessory 100 and the second accessory 200 more stable; in the secondary preload stroke, the coil spring 3021 and the support sleeve 3022 are synchronously compressed. At this time, the preload force of the connecting member 301 is provided by the common elastic deformation of the coil spring 3021 and the support sleeve 3022. In this embodiment, when switching between the primary preload stroke and the secondary preload stroke, the preload force will produce a sudden change effect, causing a nonlinear change in the preload stroke of the connecting member 301. In this process, the same preload stroke will provide a greater preload force.

[0076] It can be seen that in the embodiment, through the design of the first-level pre-tightening stroke and the second-level pre-tightening stroke, during the pre-tightening process, under the same pre-tightening stroke, the pre-tightening force can have different changing rules at different stages. Such a design can pre-tighten the connector 301 with a first-level stroke during the installation process. At this time, the second accessory 200 is connected to the first accessory 100 with a certain pressure, but the position of the second accessory 200 is not completely limited, so that the second accessory 200 is connected to the first accessory 100 but not fixed. At this time, the position of the second accessory 200 can be fine-tuned according to the assembly process (the position of other cooperating components). When the positions of each component are adjusted appropriately, the second-level pre-tightening stroke is performed until the second accessory 200 and the first accessory 100 are firmly connected. The first-level pre-tightening stroke and the second-level pre-tightening stroke in this embodiment provide a pre-installation stage and a tightening stage in the assembly process, which is more convenient for assembly and improves assembly efficiency and connection reliability.

[0077] When the coil spring 3021 and the support sleeve 3022 are both elastic parts and connected in parallel, the coil spring 3021 can also be built into the support sleeve 3022, and in actual use, one end of the coil spring 3021 can be connected to the support sleeve 3022 or not.

[0078] One of the specific embodiments of the present invention is that the first accessory 100 is a table top 401, the second accessory 200 is a table frame 501 supporting the table top 401, the connecting component 300 is pre-installed on the table top 401, and the table frame 501 and the table top 401 are quickly assembled and unassembled through the connecting component 300, wherein the table frame 501 includes a side bracket 5011 and a baffle 5012.

[0079] See attached Figure 2 、 11 , 12. The side bracket 5011 and the table top 401 are connected by a connecting assembly 300. A mounting hole 201 is provided on the side bracket 5011. One end of the connecting member 301 passes through the mounting hole 201. The pre-tightening member 302 is clamped between the table top 401 and the side bracket 5011. When in the locked state, the operating part of the connecting member 301 is stopped on the side bracket 5011 around the mounting hole 201. The pre-tightening member 302 is elastically deformed by the pressure of the side bracket 5011 and the table top 401. The elastic deformation can pre-tighten the connecting member 301 and improve the connection strength of the connecting member 301. When in the unlocked state, the operating part is rotated to a position where the operating part can pass through the mounting hole 201. The side bracket 5011 can be disassembled without removing the connecting member 301 from the table top 401, and the side bracket 5011 can be quickly assembled and unassembled.

[0080] See attached Figure 11 、 12 The baffle 5012 and the table top 401 are connected by a connecting component 300. The baffle 5012 is installed on the table top 401 and covers the crossbeam. A cavity for wiring is formed between the baffle 5012, the table top 401 and the crossbeam. During assembly, the pre-tightening member 302 is arranged between the table top 401 and the baffle 5012. The design of the pre-tightening member 302 can ensure the presence of a cavity between the baffle 5012 and the table top 401. Through the design of the connecting component 300, the baffle 5012 and the table top 401 can be quickly loaded and unloaded.

[0081] In this embodiment, in order to ensure the assembly effect and avoid the problem that the operating part of the connecting piece 301 protrudes from the surface of the table frame 501 and easily causes scratches to the user during the assembly process, in the actual design, a recess 5013 is designed at the connection part on the side bracket 5011 and the baffle 5012, the mounting hole 201 is set in the recess 5013, and the connecting component 300 is connected in the recess 5013, so that during assembly, the operating part will not protrude from the surface of the side bracket 5011 or the baffle 5012.

[0082] One of the embodiments of the present invention is that a table includes a table top 401 and a table frame 501 supporting the table top 401, the table frame 501 includes two leg assemblies 502 and a beam connected therebetween, the connecting assembly 300 is pre-installed on the beam, referring to the accompanying drawings, in this embodiment, the leg assembly 502 is the second accessory 200, the beam is the first accessory 100, the connecting assembly 300 is pre-installed on the beam, a mounting hole 201 is provided on the leg assembly 502, the leg assembly 502 is installed on the beam through the connecting assembly 300, and quick loading and unloading between the leg assembly 502 and the beam can be achieved.

[0083] In addition, during actual design, the table leg assembly 502 can also be directly installed on the table top 401 through the connecting assembly 300. At this time, the table top 401 is the first accessory 100, and the table leg assembly 502 is the second accessory 200, thereby realizing rapid assembly and disassembly of the table leg assembly 502 and the table top 401 and improving assembly efficiency.

[0084] One embodiment of the present invention is as follows: Figure 11 、 13 The crossbeam includes a first crossbeam 4021 and a second crossbeam 4022 that are mutually telescopically connected. The connecting assembly 300 is connected to one of the first crossbeam 4021 and the second crossbeam 4022 to achieve positioning after the two crossbeams are telescopically extended. In this embodiment, the first crossbeam 4021 is the first accessory 100 and the second crossbeam 4022 is the second accessory 200. Alternatively, the second crossbeam 4022 is the first accessory 100 and the first crossbeam 4021 is the second accessory 200. The following description assumes that the first crossbeam 4021 is the first accessory 100 and the second crossbeam 4022 is the second accessory 200. The connecting assembly 300 is pre-installed on the first crossbeam 4021. The upper ends of the opposing side walls of the second crossbeam 4022 extend toward each other to form flanges 4023. The gap between the flanges 4023 constitutes the mounting hole 201.

[0085] In the prior art, the connection of the telescopic beam relied on screw locking, which was not only inconvenient to adjust but also could only be extended and retracted at a few specific lengths. With the solution of this embodiment, for example, a guide hole 4024 is provided on the bottom wall of the second beam 4022 along its length direction, and the connecting portion passes through the guide hole 4024 and is connected to the bottom wall of the first beam 4021. When the guide hole 4024 is within the allowable length range, the telescopic beam can achieve stepless extension and retraction adjustment without removing the connecting components.

[0086] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A quick-loading and unloading table, characterized in that: include: a first accessory and a second accessory; as well as, a connecting assembly comprising a connecting member and a pre-tightening member, wherein the connecting member comprises a connecting portion and an operating portion provided on the connecting portion, the connecting portion being connected to the first accessory and allowing the operating portion to switch between a locked position and an unlocked position in a connected state; The orthographic projection of the operating portion in the locked position on the first accessory partially overlaps with the orthographic projection of the second accessory on the first accessory, and the side of the second accessory facing away from the first accessory is stopped by the operating portion. The pre-tightening member is clamped between the first accessory and the second accessory to generate elastic deformation, and the elastic deformation of the pre-tightening member applies a pre-tightening force to the connecting member through the second accessory; The orthographic projection of the operating portion in the unlocked position on the first accessory does not overlap with the orthographic projection of the second accessory on the first accessory, so that the operating portion stops the second accessory; The pre-tightening member includes a coil spring and a support sleeve, and the coil spring is pressed onto the first accessory or the second accessory by the support sleeve; The support sleeve can produce elastic deformation, and the connecting component has a primary pre-tightening stroke and a secondary pre-tightening stroke: In the first-level preload stroke, the coil spring is compressed, and a gap is provided between the support sleeve and the first accessory or the second accessory; During the secondary preload stroke, the coil spring and the support sleeve are synchronously compressed by the first accessory and the second accessory.

2. The quick-install and disassemble table according to claim 1, characterized in that: The operating part slides along the radial direction of the connecting part to switch between the locked position and the unlocked position; or, the operating part can rotate about the axis of the connecting part to switch between the locked position and the unlocked position; or, the operating part is configured as a cam member and rotates eccentrically to connect the connecting part.

3. The quick-install and disassemble table according to claim 2, characterized in that: The connecting portion is threadedly connected to the first accessory.

4. The quick-assembly and disassembly table according to claim 3, characterized in that: The operating part can drive the connecting part to rotate.

5. The quick-install and dismantle table according to claim 1, characterized in that: The second accessory is provided with a mounting hole; The operating portion in the locked position is stopped on the second fitting around the mounting hole; The operating portion in the unlocked position can pass through the mounting hole to allow the second accessory to be removed.

6. The quick-install and dismantle table according to claim 1, characterized in that: The coil spring is built into the support sleeve, and the connecting portion passes through the coil spring and the support sleeve.

7. The quick-assemble and disassemble table according to any one of claims 1 to 6, characterized in that: The first accessory is a table top, the second accessory is a table frame supporting the table top, the connecting component is pre-installed on the table top, and the table frame and the table top are quickly assembled and disassembled through the connecting component.

8. The quick-assemble and disassemble table according to any one of claims 1 to 6, characterized in that: The table includes a table top and a table frame supporting the table top, the table frame includes two table leg assemblies and a crossbeam connected therebetween, the connecting assembly is pre-installed on the crossbeam, and the table leg assemblies and the crossbeam are quickly assembled and disassembled through the connecting assembly.

9. The quick-assembly and disassembly table according to claim 8, characterized in that: The crossbeam includes a first crossbeam and a second crossbeam that are sleeved together and can be relatively telescopic. The connecting assembly is connected to one of the first crossbeam and the second crossbeam to achieve positioning of the two after telescopic movement.

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