Two-stage supporting type support

Abstract

The utility model relates to the field of supports, in particular to a two-stage supporting type support. The table comprises a table board, a base and a supporting assembly. A supporting mechanism used for supporting the table board is installed between the base and the table board. The supporting assembly is installed on the table board and comprises at least two supporting rods, each supporting rod is provided with a supporting rod part, the supporting rod parts are located above the table board when the supporting rods are used, and the supporting rod parts are moved away from the upper portion of the table board when the supporting rods are not used. The device is simple in structure, light in weight, low in cost, low in price, convenient to carry and suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the field of brackets, in particular to a two-stage lifting bracket. Background Art

[0002] Students and office workers generally need to use laptops. Currently, users usually put their laptops on the table and use them while sitting on a chair. However, long-term sitting can have adverse effects on the cervical spine and waist, so research has emerged on devices that can place laptops at a higher position so that users can stand and use them, such as electric lift tables.

[0003] However, the electric lifting table has a complex and bulky structure, high production cost, high price, is not easy to carry, and is not suitable for popularization. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes a two-stage lifting bracket which is simple in structure, lightweight, low in cost, low in price, easy to carry and suitable for popularization.

[0005] The technical solution of the utility model is a two-stage lifting bracket, which includes a table top, a base and a lifting assembly; a supporting mechanism for supporting the table top is installed between the base and the table top; the lifting assembly is installed on the table top, and the lifting assembly includes at least two supporting rods, and the supporting rods have supporting rod parts, which are located above the table top when the supporting rods are in use, and are moved away from above the table top when the supporting rods are not in use.

[0006] Preferably, the outer end of the supporting rod portion has an upwardly convex limiting platform portion.

[0007] Preferably, two supporting rods are provided, and the supporting assembly further comprises two connecting seats a provided at the bottom of the table top, and a rotating column is rotatably mounted on the connecting seat a, and the rotating column is connected to the supporting rod.

[0008] Preferably, a protruding stop column portion is provided on the outer circumference of the rotating column, and the connecting seat a has a limiting groove for limiting the range of motion of the stop column portion. When the stop column portion abuts against the bottom end of the limiting groove, the supporting rod portion is located above the table top, and when the stop column portion abuts against the top end of the limiting groove, the supporting rod portion is located to the side or below the table top.

[0009] Preferably, at least two connecting seats b are provided at the bottom of the table top, the connecting seats b correspond to the supporting rods one by one, and the connecting seats b have slots or holes for the supporting rods to be inserted.

[0010] Preferably, the supporting mechanism includes a connecting frame a connected to the bottom of the table top, a bracket arranged on the base, and two sets of lifting components that are relatively distributed and can lift or lower the connecting frame a.

[0011] Preferably, the lifting assembly includes an upper rod with one end rotatably mounted on a connecting frame a, a lower rod with both ends rotatably connected to the other end of the upper rod and the bracket, and a clamping and limiting assembly arranged at the rotational connection between the upper rod and the lower rod.

[0012] Preferably, the clamping and limiting assembly includes a rotating sleeve and a connecting sleeve respectively clamped on the upper rod and the lower rod and rotatably connected to each other, a rivet for riveting the rotating sleeve and the connecting sleeve, a sliding sleeve slidably clamped in the upper rod, a spring connected between the rivet and the sliding sleeve, a clamping sleeve a and a clamping sleeve b clamped on the lower rod, a rotating rod rotatably arranged on the clamping sleeve a, and a knob connected to the outer end of the rotating rod; the clamping sleeve b has thrust grooves distributed along the inner circumference, and the rotating rod has a spring adapted to fit the thrust groove. The push ring portion has an annularly distributed tooth groove a at one end of the card sleeve facing the card sleeve a, and the tooth groove a has a blocking surface distributed along the axial direction of the card sleeve and a guiding inclined surface obliquely distributed relative to the blocking surface. The end of the card sleeve a facing the card sleeve has an annularly distributed tooth groove b adapted to the tooth groove a; the end of the upper rod rotatably connected to the lower rod has a groove a for the rotating sleeve to be clamped and the card sleeve to be slidably clamped, and the end of the lower rod rotatably connected to the upper rod has a groove b for the connecting sleeve and the card sleeve a to be clamped.

[0013] Preferably, the outer end of the upper rod is connected to a gear a and / or the outer end of the lower rod is connected to a gear b, the two gears a on the two upper rods are meshed and connected, and the two gears b on the two lower rods are meshed and connected.

[0014] Preferably, the supporting mechanism is a damping telescopic mechanism or a snap-on limiting telescopic mechanism.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] The utility model has a simple structure, is lightweight, low cost, low price, easy to carry and suitable for popularization. Two-level adjustment is achieved by adjusting the height of the table top and the height of the support rod of the support rod, and the height adjustment range is larger. The table top is maintained at the adjusted height by clamping the limit assembly, and the user can use it smoothly. The entire lifting bracket can be placed on the desktop of a study table or office desk, which is convenient for users to stand and study or work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of two support rods in the first embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the first embodiment of the utility model with two support rods folded;

[0019] Figure 3 It is a partial structural schematic diagram of the first embodiment of the utility model;

[0020] Figure 4This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0021] Figure 5 It is a schematic diagram of the lower structure in the embodiment of the utility model;

[0022] Figure 6 It is a cross-sectional view of the folding principle structure of the upper rod and the lower rod in the embodiment of the utility model;

[0023] Figure 7 for Figure 6 A magnified view of the structure at center A;

[0024] Figure 8 for Figure 6 Exploded diagram of the structure;

[0025] Fig. 9 It is a structural schematic diagram of the sliding sleeve;

[0026] Fig.10 This is a schematic diagram of the structure of the third embodiment of the present utility model;

[0027] Fig.11 for Fig.10 A cross-sectional view of the local structure.

[0028] : 1. table top; 2. support rod; 201. limit platform; 3. rotating column; 301. stop column; 4. connecting seat a; 401. limit groove; 5. connecting seat b; 6. connecting frame a; 7. upper rod; 71. gear a; 8. lower rod; 81. gear b; 9. bracket; 10. mounting cover; 11. base; 12. connecting sleeve; 13. rivet; 14. spring; 15. sliding sleeve; 16. sleeve a; 17. sleeve b; 18. rotating rod; 19. knob; 20. connecting frame b; 21. sliding rod; 22. guide cylinder; 23. connecting cylinder; 24. clamping plate; 241. clamping groove; 25. connecting platform; 26. buckle button; 261. buckle platform; 27. spring. DETAILED DESCRIPTION

[0029] Embodiment 1

[0030] like Figure 1-Figure 3 , Figure 5-Figure 9 As shown, a two-stage lifting bracket proposed in this embodiment includes a table top 1, a base 11 and a lifting component.

[0031] A supporting mechanism for supporting the table top 1 is installed between the base 11 and the table top 1 .

[0032] The lifting assembly is installed on the table board 1. The lifting assembly includes two supporting rods 2 and two connecting seats a4 arranged at the bottom of the table board 1. The supporting rod 2 has a supporting rod portion. The user can put the laptop on the supporting rod portion and place the mouse and / or external keyboard on the table board 1. The outer end of the supporting rod portion has an upward convex limiting platform portion 201. After the laptop is placed on the supporting rod portion, the limiting platform portion 201 is used to prevent the laptop from falling to the side where the user is. The supporting rod portion is located above the table board 1 when the supporting rod 2 is in use, and is moved away from the table board 1 when the supporting rod 2 is not in use. That is, when the laptop is used while standing, the supporting rod portion is adjusted to the top of the table board 1, and the laptop is supported by the supporting rod portion. When the laptop is not used while standing, the supporting rod portion is moved away, thereby reducing the space occupied by the entire two-stage lifting bracket and facilitating storage.

[0033] like Figure 3 As shown, a rotating column 3 is rotatably mounted on the connecting seat a4, and the rotating column 3 is connected to the supporting rod 2. By rotating the supporting rod 2, the supporting rod portion of the supporting rod 2 can be rotated to the top or side of the table board 1, and the rotating column 3 can be rotated on the connecting seat a4 to assist in the rotation adjustment of the supporting rod 2. A protruding stop column portion 301 is provided on the outer peripheral surface of the rotating column 3, and the connecting seat a4 has a limiting groove 401 that limits the range of movement of the stop column portion 301, thereby limiting the rotation range of the supporting rod 2. When the stop column portion 301 abuts against the bottom end of the limiting groove 401, the supporting rod portion is located above the table board 1, that is, it is used to place a laptop computer. When the stop column portion 301 abuts against the top end of the limiting groove 401, the supporting rod portion is located on the side or bottom of the table board 1, that is, it is stored to the side or bottom to reduce the occupied space. When the supporting rod 2 is not used, the table board 1 can also be used alone to place a laptop or book, as well as a mouse and / or an external keyboard.

[0034] like Figure 5 As shown, the supporting mechanism includes a connecting frame a6 connected to the bottom of the table board 1, a bracket 9 and a mounting cover 10 arranged on the base 11, and two sets of lifting components which are relatively distributed and can lift or lower the connecting frame a6. The height of the connecting frame a6 is adjusted by the lifting components, thereby adjusting the height of the table board 1. The support rod part combined with the support rod 2 can be adjusted to above the table board 1, thereby realizing two-stage adjustment and a large degree of adjustment.

[0035] like Figure 5As shown, the lifting assembly includes an upper rod 7 with one end rotatably mounted on the connecting frame a6, a lower rod 8 with two ends rotatably connected to the other end of the upper rod 7 and the bracket 9, and a clamping limit assembly arranged at the rotational connection between the upper rod 7 and the lower rod 8. The two sets of lifting assemblies can be adjusted to different degrees of expansion (degrees of expansion of the upper rod 7 and the lower rod 8). In the process of adjusting the height of the connecting frame a6, the upper rod 7 and the lower rod 8 in the same set of lifting assemblies are distributed in a V shape, and when adjusted to the highest position, the upper rod 7 and the lower rod 8 are both adjusted to a vertical state, and when adjusted to the lowest position, the upper rod 7 and the lower rod 8 are both adjusted to a horizontal state, that is, the entire lifting bracket is folded for easy carrying.

[0036] In addition, a gear a71 may be connected to the outer end of the upper rod 7, and / or a gear b81 may be connected to the outer end of the lower rod 8. The two gears a71 on the two upper rods 7 are meshed and connected, and the two gears b81 on the two lower rods 8 are meshed and connected, so that the two sets of lifting components can be adjusted synchronously. The gear b81 is located inside the mounting cover 10, and the gear b81 is shielded by the mounting cover 10. The gear a71 is located inside the connecting frame a6.

[0037] like Figure 6-Figure 9 As shown, the clamping and limiting assembly includes a rotating sleeve and a connecting sleeve 12 respectively clamped on the upper rod 7 and the lower rod 8 and rotatably connected to each other, a rivet 13 riveting the rotating sleeve and the connecting sleeve 12, a sliding sleeve 15 slidably clamped in the upper rod 7, a spring 14 connected between the rivet 13 and the sliding sleeve 15, a clamping sleeve a16 and a clamping sleeve b17 clamped on the lower rod 8, a rotating rod 18 rotatably arranged on the clamping sleeve a16, and a knob 19 connected to the outer end of the rotating rod 18; the clamping sleeve b17 has a thrust groove distributed along the inner circumference, the rotating rod 18 has a push ring portion adapted to the thrust groove, the end of the clamping sleeve 15 facing the clamping sleeve a16 has an annularly distributed tooth groove a, the tooth groove a has a blocking surface distributed along the axial direction of the clamping sleeve 15 and a guide inclined surface obliquely distributed relative to the blocking surface, and the end of the clamping sleeve a16 facing the clamping sleeve 15 has an annularly distributed tooth groove b adapted to the tooth groove a.

[0038] One end of the upper rod 7 rotatably connected to the lower rod 8 has a slot a for the rotating sleeve to be clamped and for the sliding sleeve 15 to be slidably clamped, and one end of the lower rod 8 rotatably connected to the upper rod 7 has a slot b for the connecting sleeve 12 and the clamping sleeve a16 to be clamped.

[0039] When the tooth groove a and the tooth groove b are engaged, the blocking surface can ensure that the sliding sleeve 15 and the sleeve a16 can rotate unidirectionally through the guiding inclined surface (corresponding to the unfolding of the upper rod 7 and the lower rod 8, and the rising of the connecting frame a6). After adjusting the height of the connecting frame a6, the blocking surface can maintain the connecting frame a6 at the adjusted height.

[0040] By turning the knob 19, the rotating rod 18 can be driven to rotate, and the rotating rod 18 moves on the thrust groove through the push ring part, and the rotating rod 18 moves toward the sliding sleeve 15, and pushes the sliding sleeve 15 outward through the end, so that the tooth groove a of the sliding sleeve 15 and the tooth groove b of the sleeve a16 are disengaged, and the spring 14 is compressed. At this time, the angle between the upper rod 7 and the lower rod 8 can be adjusted to adjust the height of the table board 1. After the adjustment is completed, release the knob 19, and the spring 14 pushes the sliding sleeve 15 to move in the opposite direction, and the tooth groove a and the tooth groove b are re-engaged to maintain the height of the table board 1.

[0041] This embodiment has a simple structure, is lightweight, low cost, low price, easy to carry and suitable for popularization. Two-level adjustment is achieved by adjusting the height of the table top 1 and the height of the supporting rod portion of the supporting rod 2. The height adjustment range is larger. The table top 1 is maintained at the adjusted height by clamping the limit assembly, and the user can use it smoothly. The entire lifting bracket can be placed on the desktop of a study table or office desk, which is convenient for users to stand and study or work.

[0042] Embodiment 2

[0043] like Figure 4-Figure 9 As shown, the present embodiment proposes a two-stage lifting bracket. Compared with the first embodiment, in the present embodiment, at least two connection seats b5 are provided at the bottom of the table top 1. The connection seats b5 correspond to the support rods 2 one by one. The connection seats b5 have slots or jacks for inserting the support rods 2. When using a laptop, the support rod 2 is inserted into the slots or jacks, and the laptop is placed on the support rod portion of the support rod 2, and the position is prevented from falling off by the limit table portion 201. When the support rod 2 is not in use, the support rod 2 is pulled out from the slots or jacks and stored.

[0044] Embodiment 3

[0045] The two-stage lifting bracket proposed in this embodiment is different from the first and second embodiments. Fig.10 and Fig.11 As shown, the supporting mechanism is a snap-on limiting telescopic mechanism, which includes a connecting frame b20 connected to the bottom of the table top 1, a sliding rod 21 vertically arranged on the connecting frame b20, a guide cylinder 22 vertically arranged on the base 11 and having a channel for the sliding rod 21 to pass through, a connecting cylinder 23 arranged at the top of the guide cylinder 22 and slidably connected to the sliding rod 21, a card plate 24 vertically arranged on the side of the sliding rod 21 and having multiple slots 241 distributed along the vertical direction, a connecting platform 25 arranged at the top of the guide cylinder 22 and located on the inner side of the connecting cylinder 23, a snap button 26 rotatably arranged on the connecting cylinder 23, and a spring 27 connected between the lower part of the snap button 26 and the connecting platform 25, and the spring 27 can be replaced by other elastic structures, such as an elastic pad.

[0046] The buckle button 26 includes a V-shaped plate and a buckle platform 261 connected to the top of the V-shaped plate. The V-shaped plate has a V-shaped surface that is distributed outward. The buckle platform 261 is buckled in the slot 241. The buckle platform 261 and the spring 27 are respectively located on the same side of the upper and lower ends of the V-shaped plate. By pressing the lower end of the V-shaped plate, the buckle platform 261 can be rotated out of the slot 241, and the spring 27 is compressed. At this time, the extension distance of the slide bar 21 on the guide cylinder 22 can be adjusted, that is, the height of the table top 1 can be adjusted. After reaching the desired height, the buckle button 26 is released, and the spring 27 pushes the buckle button 26 to rotate in the opposite direction. The buckle platform 261 is re-engaged in the slot 241 here for limiting, so that the table top 1 is stably maintained at the adjusted height.

[0047] Embodiment 4

[0048] This embodiment proposes a two-stage lifting bracket. The difference between this embodiment and the third embodiment is that the supporting mechanism is a damping telescopic mechanism, which includes a telescopic rod, a damping cylinder and a threaded knob that is threadedly connected to the top of the damping cylinder and can be screwed on the telescopic rod. The damping sliding of the telescopic rod is set on the damping cylinder. The top of the telescopic rod is connected to the bottom of the table board 1. The damping cylinder is vertically set on the base 11. The damping telescopic mechanism is simpler in structure than the buckle-limited telescopic mechanism in the third embodiment. The telescopic rod can be a round rod or a polygonal rod. When the telescopic rod is a polygonal rod, the telescopic rod can be lifted and slid on the damping cylinder; when the telescopic rod is a round rod, the telescopic rod can be lifted and slid and rotated on the damping cylinder, so that the table board 1 can be adjusted to the desired height and orientation.

[0049] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A two-stage lifting bracket, characterized in that: include: Table top (1); A base (11), with a supporting mechanism for supporting the table top (1) installed between the base (11) and the table top (1); A lifting assembly is installed on a table top (1), comprising at least two supporting rods (2), wherein the supporting rods (2) have supporting rod portions, wherein the supporting rod portions are located above the table top (1) when the supporting rods (2) are in use, and the supporting rod portions are moved away from above the table top (1) when the supporting rods (2) are not in use.

2. A two-stage lifting bracket according to claim 1, characterized in that: The outer end of the supporting rod portion is provided with an upwardly convex limiting platform portion (201).

3. The two-stage lifting bracket according to claim 1, characterized in that: Two supporting rods (2) are provided, and the supporting assembly further comprises two connecting seats a (4) arranged at the bottom of the table top (1), and a rotating column (3) is rotatably mounted on the connecting seat a (4), and the rotating column (3) is connected to the supporting rod (2).

4. A two-stage lifting bracket according to claim 3, characterized in that: The outer peripheral surface of the rotating column (3) is provided with a protruding stop column portion (301), and the connecting seat a (4) has a limiting groove (401) for limiting the range of movement of the stop column portion (301); when the stop column portion (301) abuts against the bottom end of the limiting groove (401), the supporting rod portion is located above the table top (1); when the stop column portion (301) abuts against the top end of the limiting groove (401), the supporting rod portion is located to the side or below the table top (1).

5. The two-stage lifting bracket according to claim 1, characterized in that: At least two connection seats b (5) are arranged at the bottom of the table top (1), the connection seats b (5) correspond to the support rods (2) one by one, and the connection seats b (5) have slots or holes for the support rods (2) to be inserted.

6. The two-stage lifting bracket according to claim 1, characterized in that: The supporting mechanism comprises a connecting frame a (6) connected to the bottom of the table top (1), a bracket (9) arranged on a base (11), and two sets of lifting components which are relatively distributed and can lift or lower the connecting frame a (6).

7. The two-stage lifting bracket according to claim 6, characterized in that: The lifting assembly comprises an upper rod (7) with one end rotatably arranged on a connecting frame a (6), a lower rod (8) with two ends rotatably connected to the other end of the upper rod (7) and a bracket (9), and a clamping and limiting assembly arranged at the rotational connection between the upper rod (7) and the lower rod (8).

8. The two-stage lifting bracket according to claim 7, characterized in that: The clamping and limiting assembly comprises a rotating sleeve and a connecting sleeve (12) respectively clamped on an upper rod (7) and a lower rod (8) and rotatably connected to each other, a rivet (13) for riveting the rotating sleeve and the connecting sleeve (12), a clamping sleeve (15) slidably clamped in the upper rod (7), a spring (14) connected between the rivet (13) and the clamping sleeve (15), a clamping sleeve a (16) and a clamping sleeve b (17) clamped on the lower rod (8), a rotating rod (18) rotatably arranged on the clamping sleeve a (16), and a knob (19) connected to the outer end of the rotating rod (18); the clamping sleeve b (17) has a thrust groove distributed along the inner circumference, and the rotating rod (18) is provided with a spring (14) connected between the rivet (13) and the clamping sleeve (15). (18) has a push ring portion adapted to the thrust groove, the end of the card sleeve (15) facing the card sleeve a (16) has an annularly distributed tooth groove a, the tooth groove a has a blocking surface distributed along the axial direction of the card sleeve (15) and a guiding inclined surface inclined relative to the blocking surface, and the end of the card sleeve a (16) facing the card sleeve (15) has an annularly distributed tooth groove b adapted to the tooth groove a; the end of the upper rod (7) rotatably connected to the lower rod (8) has a groove a for the rotating sleeve to be clamped and for the card sleeve (15) to be slidably clamped, and the end of the lower rod (8) rotatably connected to the upper rod (7) has a groove b for the connecting sleeve (12) and the card sleeve a (16) to be clamped.

9. A two-stage lifting bracket according to claim 7 or 8, characterized in that: The outer end of the upper rod (7) is connected to a gear a (71) and / or the outer end of the lower rod (8) is connected to a gear b (81), the two gears a (71) on the two upper rods (7) are meshed and connected, and the two gears b (81) on the two lower rods (8) are meshed and connected.

10. The two-stage lifting bracket according to claim 1, characterized in that: The supporting mechanism is a damping telescopic mechanism or a snap-on limiting telescopic mechanism.

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