Auxiliary lifting expansion table

Abstract

The utility model provides an auxiliary lifting expansion table, which solves the problem that a drawing expansion table in the prior art is tedious and strenuous in deformation operation, and comprises a main body frame and a drawing frame, a main rail and an auxiliary rail are respectively arranged on the main body frame and the drawing frame, the auxiliary rail is arranged on the main rail in a sliding manner, and a limiting pin is arranged on the auxiliary rail; the fixed table plate is arranged on the main rail, and the expansion table plate is arranged on the auxiliary rail; the lifting sliding blocks are arranged at the bottom of the expansion table board and slidably arranged on the auxiliary rails, sliding grooves are formed in the lifting sliding blocks, the limiting pins are movably arranged on the sliding grooves, and the drawing frame is pushed and pulled to drive the auxiliary lifting expansion table to be switched between the unfolded state and the folded state; and the expanding table plate is jacked up by the jacking auxiliary assembly and the lifting sliding block and is spliced with the fixed table plate to form a complete expanding table plate.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to an auxiliary height-adjustable extension table. Background Technology

[0002] In this rapidly changing and diverse era, people's needs for furniture are constantly evolving. Tables, as a core piece of furniture in both the home and workplace, are becoming increasingly diverse and specialized in style and function. The market offers a wide variety of tables, precisely categorized according to different usage scenarios to suit various activities and occasions. For example, we have desks designed specifically for offices, dining tables for family meals, school desks for school environments, computer desks designed for personal computer use, and study desks that provide a comfortable space for studying and reading. Each table, with its unique design, provides optimal support and convenience for its specific purpose.

[0003] Beyond functional specialization, the structural design of tables is constantly being innovated and optimized. Height-adjustable tables allow users to easily adjust the height according to their own height and habits for a healthier and more comfortable sitting posture. Foldable tables, due to their ease of storage and space-saving features, are ideal for small living spaces. Expandable tables, with their flexible extension function, can adapt to various occasions and are increasingly popular with families.

[0004] Pull-out tables, as a type of expandable table, allow for the extension and folding of the desktop through a simple pull-out motion, providing users with more space and convenience. However, existing pull-out table designs are often quite complex and heavy, requiring considerable strength to unfold or fold up, usually necessitating assistance from others. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide an auxiliary lifting extension table, which solves the problem of cumbersome and laborious deformation operation of the existing pull-out extension table.

[0006] To solve the above-mentioned technical problems, this utility model provides an auxiliary height-adjustable extension table, comprising:

[0007] The main frame and the pull-out frame are respectively provided with a main rail and a secondary rail. The secondary rail is slidably disposed on the main rail and is provided with a limit pin.

[0008] A fixed tabletop and an extendable tabletop, wherein the fixed tabletop is mounted on the main rail and the extendable tabletop is mounted on the secondary rail;

[0009] The lifting slider is located at the bottom of the extension table and slidably mounted on the sub-rail. The lifting slider is provided with a sliding groove, and the limiting pin is movably mounted on the sliding groove. Pushing and pulling the pull-out frame causes the auxiliary lifting extension table to switch between the unfolded and folded states.

[0010] A lifting auxiliary component applies an upward lifting force to the extendable table to balance its weight. In the folded state, the limiting pin is located at the upper part of the sliding groove, and the extendable table is positioned at the bottom of the fixed table. When switching to the unfolded state, the lifting force assists the extendable table to move upward, while simultaneously moving the limiting pin to the lower part of the sliding groove. The extendable table is then lifted by the lifting auxiliary component and the lifting slider and combined with the fixed table to form a complete extendable table.

[0011] As a more preferred embodiment, the sliding groove includes a lower horizontal groove and an inclined upper groove connected to the lower horizontal groove. In the folded state, the limiting pin is located in the inclined upper groove. When switching to the unfolded state, the lifting force assists the extended table to move upward, and at the same time drives the limiting pin to move from the inclined upper groove to the lower horizontal groove.

[0012] As a more preferred method, the bottom of the fixed tabletop is provided with a storage slot that is compatible with the extended tabletop, and in the folded state, the extended tabletop is placed in the storage slot.

[0013] As a more preferred embodiment, the lifting auxiliary component includes a spring-loaded lifting member, the lower part of which is fixed to the pull-out frame and the upper part of which abuts against the extended table. The spring-loaded lifting member applies an upward elastic force to the extended table.

[0014] As a more preferred embodiment, the elastic lifting component includes a housing, a lifting shaft, and an elastic element, wherein the housing is fixed to the pull-out frame, the lifting shaft is vertically movably disposed within the housing, with one end protruding from the housing and abutting against the extended table, and the elastic element is disposed within the housing with both ends connected to the housing and the lifting shaft, respectively.

[0015] As a more preferred embodiment, the elastic lifting component also includes a rotating wheel structure, which is disposed on the upper part of the lifting shaft and abuts against the extension table.

[0016] As a more preferred embodiment, the lifting auxiliary assembly includes a telescopic gas spring, one end of which is hinged to the pull-out frame and the other end to the extendable table. The telescopic gas spring applies a thrust to the extendable table in an upward-sloping direction.

[0017] As a more preferred method, the bottom of the extendable table is provided with rollers, and the extendable table is slidably mounted on the sub-rail via the rollers.

[0018] As a more preferred embodiment, the main rail is provided with a main sliding groove, and a main sliding wheel is provided in the main sliding groove. The secondary rail is provided with a secondary sliding groove, and a secondary sliding wheel is provided in the secondary sliding groove. The main sliding wheel is connected to the secondary rail, and the secondary sliding wheel is connected to the main rail. The unfolding and lifting are achieved by the sliding of the main sliding wheel and the secondary sliding wheel in the main sliding groove and the secondary sliding groove, respectively.

[0019] As a more preferred embodiment, the auxiliary height-adjustable extension table also includes several support legs, which are fixed to the bottom of the main frame and the pull-out frame to provide support.

[0020] As described above, the auxiliary lifting extension table of this utility model has the following beneficial effects: In the folded state, the extension table panel is located at the bottom of the fixed table panel. Pulling the pull-out frame away from the main frame causes the secondary rail to slide on the main rail, and the extension table panel is pulled out from the bottom of the fixed table panel. At this time, the auxiliary lifting unit applies a lifting force to the extension table panel to balance the weight of the extension table panel and assist in pushing the extension table panel upward, so that the limiting pin moves from the upper part of the sliding groove to the lower part. When the limiting pin moves to the lower horizontal groove, the lifting table panel drives the extension table panel to rise and merge with the fixed table panel to form a complete extension table panel. When the table is extended, the auxiliary lifting extension table switches to the extended state. To switch back to the retracted state, simply move the limiting pin upwards along the lower part of the sliding groove. During this process, the extended table descends to the level of the groove at the bottom of the fixed table. Then, push the pull-out bracket to retract the extended table into the bottom of the fixed table, thus completing the switch from the extended state to the retracted state. It can be seen that whether switching from the retracted state to the extended state or vice versa, the lifting auxiliary component balances the weight of the extended table, allowing the limiting pin to move effortlessly in the sliding groove. This assists in retracting the extended table and connecting it to the fixed table, making the operation simple, convenient, and labor-saving.

[0021] In summary, the auxiliary lifting extension table of this utility model balances the weight of the extension table panel by using a lifting auxiliary component, allowing the limiting pin to move easily between the upper and lower parts of the sliding groove. The structure is simple, the operation is convenient and labor-saving, and it solves the problem of cumbersome and laborious deformation operation of the existing pull-out extension table. Attached Figure Description

[0022] Figure 1 The diagram shown is an exploded view of the folded state of the auxiliary lifting extension table of this utility model.

[0023] Figure 2 Displayed as Figure 1 A magnified view of a portion of region A in the middle;

[0024] Figure 3 The diagram shows the structure of the auxiliary lifting extension table of this utility model in its folded state;

[0025] Figure 4 The diagram shows the auxiliary lifting component of the auxiliary lifting extension table of this utility model;

[0026] Figure 5 The image shown is a cross-sectional view of the auxiliary lifting component of the auxiliary lifting extension table of this utility model;

[0027] Figure 6 The diagram shows the structure of the main rail and the auxiliary rail of the auxiliary lifting extension table of this utility model.

[0028] Figure 7 The diagram shows the unfolded state of the auxiliary lifting extension table of this utility model.

[0029] Component designation explanation

[0030] 1 Main frame 11 Main track 111 Main slide 112 Main pulley 12 Limiting components 121 Relay 122 Limiting part 122a Lifting hole 122b Limit port 2 Pull-out shelf 21 Suborbital 211 Secondary sliding groove 212 auxiliary pulley 213 Limit pin 3 Fixed table 31 Storage slot 4 Extendable table 41 Rolling wheel 5 Lifting slider 51 Positioning pin 52 sliding groove 521 Lower horizontal channel 522 Inclined upper groove 53 Limit block 6 Support leg 7 Lifting auxiliary components 71 Elastic lifting component 711 case 712 elastic component 713 Lifting shaft 714 Rotary structure 8 Telescopic air mast Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0032] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit this application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0035] like Figures 1 to 7 As shown, this utility model provides an auxiliary height-adjustable extension table, comprising:

[0036] The main frame 1 and the pull-out frame 2 are respectively provided with a main rail 11 and a secondary rail 21. The secondary rail 21 is slidably disposed on the main rail 11, and a limit pin 213 is provided on the secondary rail 21.

[0037] The fixed tabletop 3 and the extended tabletop 4 are provided. The fixed tabletop 3 is set on the main rail 11 and a storage groove 31 adapted to the extended tabletop 4 is provided between the fixed tabletop 3 and the main rail 11. The extended tabletop 4 is set on the secondary rail 21.

[0038] The lifting slider 5 is located at the bottom of the extension table 4 and is slidably mounted on the sub-rail 21. The lifting slider 5 is provided with a sliding groove 52. The limiting pin 213 is movably mounted on the sliding groove 52. The sliding groove 52 includes a lower horizontal groove 521 and an inclined upper groove 522 connected to the lower horizontal groove 521. Pushing and pulling the pull-out bracket 2 causes the auxiliary lifting extension table to switch between the unfolded state and the folded state.

[0039] The lifting auxiliary component 7 applies an upward lifting force to the extendable table 4 to balance its weight. In the folded state, the limiting pin 213 is located in the inclined upper groove 522, and the extendable table 4 is placed in the storage groove 31. When switching to the unfolded state, the lifting force assists the extendable table 4 to move upward, while simultaneously moving the limiting pin 213 from the inclined upper groove 522 to the lower horizontal groove 521. The extendable table 4 is lifted by the lifting auxiliary component 7 and the lifting slider 5 and combined with the fixed table 3 to form a complete extendable table.

[0040] To better illustrate the auxiliary height-adjustable extension table of this utility model, the following specific application will be used as an example: In its folded state, the auxiliary height-adjustable extension table of this utility model... Figure 1 as well as Figure 3 As shown, the extendable table 4 is disposed in the storage slot 31. Pulling the pull-out bracket 2 away from the main frame 1 causes the secondary rail 21 to slide on the main rail 11, and the extendable table 4 is pulled out of the storage slot 31. At this time, the auxiliary lifting unit applies a lifting force to the extendable table 4 to balance its weight and assist in pushing it upwards. This causes the limiting pin 213 to move along the inclined upper slot 522 towards the lower horizontal slot 521. The limiting pin 213 moves to the lower horizontal slot 521. When the lifting table panel lifts the extension table panel 4 and assembles it with the fixed table panel 3 to form a complete extension table panel, the auxiliary lifting extension table switches to the unfolded state. Then, when switching to the folded state, it is only necessary to move the limiting pin 213 along the lower horizontal groove 521 towards the inclined upper groove 522. During this process, the extension table panel 4 descends to the level of the opening of the storage groove 31. Then, the pull-out bracket 2 is pushed, causing the extension table panel 4 to be stored in the storage groove 31, thus completing the switch from the unfolded state to the folded state. Figure 7 As shown above, in this utility model, regardless of whether the switch is from the folded state to the unfolded state or vice versa, the lifting auxiliary component 7 is used to balance the weight of the extension table 4, allowing the limiting pin 213 to move effortlessly in the inclined upper groove 522 and the lower horizontal groove 521. This assists in the storage of the extension table 4 and its connection with the fixed table 3, making the operation simple, convenient, and labor-saving. In summary, the auxiliary lifting extension table of this utility model balances the weight of the extension table 4 through the lifting auxiliary component 7, allowing the limiting pin 213 to move easily in the inclined upper groove 522 and the lower horizontal groove 521. The structure is simple, the operation is convenient and labor-saving, and it solves the problem of cumbersome and laborious deformation operation of the existing pull-out extension table. The sliding groove 52 can also be configured to include only the inclined upper groove 522. Those skilled in the art can also implement the solution in this application by combining the existing technology and the description of this application.

[0041] In some possible embodiments of this utility model, such as Figure 1 As shown, the lifting auxiliary component 7 includes a spring lifting member 71, which is fixed to the pull-out frame 2 and abuts against the extension table 4. The spring lifting member 71 applies an upward elastic force to the extension table 4, wherein the elastic force serves to lift the extension table 4.

[0042] In some possible embodiments of this utility model, such as Figure 4 as well as Figure 5 As shown, the elastic lifting member 71 includes a housing 711, a lifting shaft 713, and an elastic member 712. The housing 711 is fixed to the pull-out frame 2. The lifting shaft 713 is disposed inside the housing 711, with one end protruding from the housing 711 and abutting against the extension table 4. The elastic member 712 is disposed inside the housing 711, and both ends of the elastic member 712 are connected to the housing 711 and the lifting shaft 713, respectively. Furthermore, in this embodiment, the elastic member 712 is a spring.

[0043] In some possible embodiments of this utility model, such as Figure 4 as well as Figure 5 As shown, the elastic lifting member 71 also includes a rotating wheel structure 714, which is disposed at one end of the lifting shaft 713 to reduce the friction between the elastic lifting member 71 and each component when they slide.

[0044] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the lifting auxiliary component 7 includes a telescopic gas spring 8, one end of which is hinged to the pull-out frame 2 and the other end of which is hinged to the extension table 4. The telescopic gas spring 8 applies a thrust to the extension table 4 in an upward direction. Furthermore, in this embodiment, the lifting auxiliary component 7 includes two sets of telescopic gas springs 8, one end of which is symmetrically hinged to both sides of the pull-out frame 2.

[0045] In some possible embodiments of this utility model, such as Figure 1 As shown, the main frame 1 is provided with two main rails 11, which are respectively vertically arranged at both ends of the main frame 1; the pull-out frame 2 is provided with two auxiliary rails 21, which are respectively vertically arranged at both ends of the pull-out frame 2, and the auxiliary rails 21 are respectively slidably arranged on the corresponding main rails 11.

[0046] In some possible embodiments of this utility model, such as Figure 1 As shown, the fixed tabletop 3 and the extended tabletop 4 are respectively mounted on the two main rails 11 and the secondary rails 21.

[0047] In some possible embodiments of this utility model, such as Figure 1 As shown, the bottom of the extended table 4 is provided with a roller 41, and the extended table 4 is mounted on the sub-rail 21 via the roller 41.

[0048] In some possible embodiments of this utility model, such as Figure 6 As shown, the main rail 11 is provided with a main sliding groove 111, and a main sliding wheel 112 is provided in the main sliding groove 111. The secondary rail 21 is provided with a secondary sliding groove 211, and a secondary sliding wheel 212 is provided in the secondary sliding groove 211. The main sliding wheel 112 is connected to the secondary rail 21, and the secondary sliding wheel 212 is connected to the main rail 11. The main sliding wheel 112 is realized by sliding in the main sliding groove 111 and the secondary sliding groove 211 respectively.

[0049] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the lifting slider 5 is also provided with a limit block 53. One end of the limit block 53 is rotatably disposed on the lifting slider 5. By rotating the limit block 53, the limit block 53 is disposed on the sliding groove 52, thereby limiting the movement of the limit pin 213 in the sliding groove 52.

[0050] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2As shown, a positioning pin 51 is provided on the secondary rail 21, and a limiting member 12 that cooperates with the positioning pin 51 is provided on the main rail 11. When the extended table 4 is pulled out from the storage slot 31, the positioning pin 51 on the lifting slider 5 is limited by the limiting member 12. When the pull-out frame 2 is pulled back, the lifting slider 5 is limited, and the pull-out frame 2 slides relative to the lifting slider 5, so that the limiting pin 213 moves in the sliding groove 52, further saving effort. Furthermore, in this embodiment, the limiting member 12 includes a connecting part 121 and a limiting part 122. The limiting member 12 passes through the secondary rail 21 and is connected to the main rail 11 through the connecting part 121. Furthermore, in this embodiment, the inclined upper groove 522 is connected to the middle of the lower horizontal groove 521. When the limiting pin 213 moves along the inclined upper groove 522... When the movement reaches the lower horizontal groove 521, it first moves away from the main frame 1 within the lower horizontal groove 521 to allow the extended table 4 to be pulled out from the storage groove 31 and move away from the fixed table 3 at a certain distance before starting to lift, avoiding interference during the lifting process. After the extended table 4 has been lifted, the pull-out frame 2 is pushed in the opposite direction to make the limiting pin 213 move closer to the main frame 1 within the lower horizontal groove 521, thereby allowing the extended table 4 to be joined with the fixed table 3. Moreover, a lifting hole 122a is provided on the limiting part 122, and a limiting opening 122b facing the positioning pin 51 is provided on the lifting hole 122a. When the lifting slider 5 slides on the sub-rail 21, it enters the lifting hole 122a through the limiting opening 122b. The lifting hole 122a limits the positioning pin 51 while satisfying the lifting action of the lifting slider 5.

[0051] Furthermore, in some possible embodiments of this utility model, such as Figure 1 As shown, the auxiliary lifting extension table is provided with four elastic lifting components 71. Two of them are fixed to the pull-out frame 2, and the rotating wheel structure 714 of the elastic lifting component 71 is arranged upward to abut against the extension table 4, providing lifting force to the extension table 4 while reducing the friction between the extension table 4 and the lifting shaft 713. The other two elastic lifting components 71 are arranged on the lifting slider 5, and the rotating wheel structure 714 of the elastic lifting component 71 is arranged downward. When the extension table 4 is lifted from the lower position... When the elastic lifting member 71 is pulled out of the accommodating cavity, the rotating wheel structure 714 of the elastic lifting member 71 contacts the connecting part 121 of the limiting member 12. As the extension table 4 slides, the rotating wheel structure 714 slides to the upper part of the connecting part 121, thereby compressing the elastic member 712 inside the elastic lifting member 71. The generated elastic force further assists the lifting slider 5 in lifting the extension table 4. The four elastic lifting members 71 are respectively arranged near the four corners of the extension table 4, thereby providing a more stable lifting force.

[0052] In some possible embodiments of this utility model, the total lifting force provided by the lifting auxiliary component 7 is slightly less than the weight of the extension table 4. This is designed so that when the extension table is switched from the unfolded state to the folded state, the extension table 4 can move downward under the action of gravity. Correspondingly, the limiting pin 213 can move spontaneously from the lower horizontal groove 521 to the inclined upper groove 522, thereby realizing that the extension table 4 spontaneously falls to a position flush with the storage groove 31. This satisfies the requirement that the switch from the unfolded state to the folded state can be completed by simply pushing the movable part. If the total lifting force provided by the lifting auxiliary component 7 is greater than the weight of the extension table 4, then when the extension table is switched from the unfolded state to the folded state, the extension table 4 needs to be manually pressed down to overcome the lifting force in order to make the extension table 4 fall to a position flush with the storage groove 31.

[0053] In some possible embodiments of this utility model, such as Figure 1 As shown, the auxiliary lifting extension table also includes several support legs 6, which are fixed to the bottom of the main frame 1 and the pull-out frame 2 to provide support.

[0054] As described above, the auxiliary height-adjustable extension table of this utility model has the following beneficial effects:

[0055] 1. Structural Design:

[0056] Main rail 11 and secondary rail 21 design: The sliding and positioning of the extension table 4 are achieved through the design of the main rail 11 and secondary rail 21 on the main frame 1 and the pull-out frame 2;

[0057] Limiting pin 213 and sliding groove 52: The movement of the limiting pin 213 in the sliding groove 52, including the lower horizontal groove 521 and the inclined upper groove 522, ensures the stable unfolding and folding of the extension table 4;

[0058] Lifting slider 5 and lifting auxiliary component 7: The combination of lifting slider 5 and lifting auxiliary component 7 provides lifting force, balances the gravity of extension table 4, and simplifies operation.

[0059] 2. Ease of use:

[0060] Easy switching: The extension table 4 can be easily unfolded and folded using the lifting auxiliary component 7, making operation simple and convenient;

[0061] Effort-saving design: The lifting force is used to assist in the movement and positioning of the extension table 4, reducing the labor intensity of the user during operation.

[0062] 3. Stability and security:

[0063] Elastic lifting element 71 and rotating wheel structure 714: reduce friction, provide stable lifting force, and ensure table stability;

[0064] Positioning pin 51 and limiting component 12: ensure the stability and safety of the extension table 4 during the pulling out and lifting process.

[0065] 4. Flexibility and adaptability:

[0066] Multiple Lifting Components: Offers a variety of lifting components such as the spring-loaded lifting element 71 and the telescopic air rod 8 to adapt to different usage scenarios;

[0067] Roller 41 and sliding wheel design: The design of roller 41 and sliding wheel increases the flexibility of tabletop movement.

[0068] 5. Scalability and compatibility:

[0069] Dual-track design: The dual-track design on the main frame 1 and the pull-out rack 2 improves the compatibility and expandability of the tabletop;

[0070] Support Leg 6 Design: The addition of support leg 6 provides extra support and enhances the stability of the table.

[0071] This patented auxiliary lifting extension table, through its innovative structural design, provides a simple, labor-saving, stable, and safe way to unfold and fold the tabletop. The cooperation of the main rail 11 and the secondary rail 21, the design of the limiting pin 213 and the sliding groove 52, and the coordinated work of the lifting slider 5 and the lifting auxiliary component 7 enable easy switching and stable support of the extension tabletop 4. Furthermore, the patent considers operational flexibility and tabletop expandability, improving the tabletop's adaptability and compatibility through the design of various lifting components, rolling wheels 41, and sliding wheels. Overall, this patented design solves the problem of cumbersome and laborious operation of existing pull-out extension tables, providing a more efficient and user-friendly solution.

[0072] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0073] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An auxiliary height-adjustable extension table, characterized in that, include: The main frame (1) and the pull-out frame (2) are respectively provided with a main rail (11) and a secondary rail (21). The secondary rail (21) is slidably disposed on the main rail (11), and a limit pin (213) is provided on the secondary rail (21). A fixed tabletop (3) and an extended tabletop (4) are provided, wherein the fixed tabletop (3) is mounted on the main rail (11) and the extended tabletop (4) is mounted on the secondary rail (21); The lifting slider (5) is located at the bottom of the extension table (4) and is slidably mounted on the sub-rail (21). The lifting slider (5) is provided with a sliding groove (52). The limiting pin (213) is movably mounted on the sliding groove (52). Pushing and pulling the pull-out frame (2) drives the auxiliary lifting extension table to switch between the unfolded state and the folded state. The lifting auxiliary component (7) applies an upward lifting force to the extended table (4) to balance the weight of the extended table (4). In the retracted state, the limiting pin (213) is located on the upper part of the sliding groove (52), and the extended table (4) is set at the bottom of the fixed table (3). When switching to the unfolded state, the lifting force assists the extended table (4) to move upward, and at the same time drives the limiting pin (213) to move to the lower part of the sliding groove (52). The extended table (4) is lifted by the lifting auxiliary component (7) and the lifting slider (5) and is combined with the fixed table (3) to form a complete extended table.

2. The auxiliary height-adjustable extension table according to claim 1, characterized in that: The sliding groove (52) includes a lower horizontal groove (521) and an inclined upper groove (522) connected to the lower horizontal groove (521). In the closed state, the limiting pin (213) is located in the inclined upper groove (522). When switching to the unfolded state, the lifting force assists the extension table (4) to move upward, and at the same time drives the limiting pin (213) to move from the inclined upper groove (522) to the lower horizontal groove (521).

3. The auxiliary height-adjustable extension table according to claim 1, characterized in that: The bottom of the fixed tabletop (3) is provided with a storage slot (31) that is compatible with the extended tabletop (4). In the folded state, the extended tabletop (4) is placed in the storage slot (31).

4. The auxiliary height-adjustable extension table according to claim 1, characterized in that: The lifting auxiliary component (7) includes a spring lifting member (71), the lower part of which is fixed to the pull-out frame (2) and the upper part abuts against the extension table (4). The spring lifting member (71) applies an upward elastic force to the extension table (4).

5. The auxiliary height-adjustable extension table according to claim 4, characterized in that: The elastic lifting member (71) includes a housing (711), a lifting shaft (713), and an elastic member (712). The housing (711) is fixed on the pull-out frame (2). The lifting shaft (713) is vertically and vertically disposed inside the housing (711), with one end protruding from the housing (711) and abutting against the extended table (4). The elastic member (712) is disposed inside the housing (711), and both ends of the elastic member (712) are connected to the housing (711) and the lifting shaft (713), respectively.

6. The auxiliary height-adjustable extension table according to claim 5, characterized in that: The elastic lifting component (71) also includes a rotating wheel structure (714), which is located on the upper part of the lifting shaft (713) and abuts against the extension table (4).

7. The auxiliary height-adjustable extension table according to claim 1, characterized in that: The lifting auxiliary component (7) includes a telescopic air rod (8), one end of which is hinged to the pull-out frame (2) and the other end is hinged to the extension table (4). The telescopic air rod (8) applies a thrust to the extension table (4) in an upward direction.

8. The auxiliary height-adjustable extension table according to claim 1, characterized in that: The bottom of the extended table (4) is provided with a roller (41), and the extended table (4) is slidably mounted on the sub-rail (21) by means of the roller (41).

9. The auxiliary height-adjustable extension table according to claim 1, characterized in that: The main rail (11) is provided with a main sliding groove (111), and a main sliding wheel (112) is provided in the main sliding groove (111). The secondary rail (21) is provided with a secondary sliding groove (211), and a secondary sliding wheel (212) is provided in the secondary sliding groove (211). The main sliding wheel (112) is connected to the secondary rail (21), and the secondary sliding wheel (212) is connected to the main rail (11). The unfolding and lifting are realized by the sliding of the main sliding wheel (112) and the secondary sliding wheel (212) in the main sliding groove (111) and the secondary sliding groove (211) respectively.

10. The auxiliary height-adjustable extension table according to claim 1, characterized in that: The auxiliary lifting extension table also includes several support legs (6), which are fixed to the bottom of the main frame (1) and the pull-out frame (2) to provide support.

Images