Disassembly and assembly type lead screw assembly of single-motor lifting table

Abstract

The utility model relates to the technical field of lifting tables, in particular to a disassembly and assembly type lead screw assembly of a single-motor lifting table, which comprises two table legs, a transmission rod, two lead screws, two groups of speed reduction transmission devices and a motor driving device. A lead screw is arranged in each table leg, and the lead screws are in threaded connection with the table legs. The speed reduction transmission device comprises a connecting piece and a gear box. The connecting piece is fixed in the gearbox, an inserting groove is formed in the lower end of the connecting piece, and the upper end of the lead screw is fixed in the inserting groove. The two ends of the transmission rod are connected into the corresponding gear boxes. The motor driving device is connected with the transmission rod so as to drive the two lead screws to do lifting motion through the two gear boxes at the same time. The two lead screws rotate forwards and backwards to achieve lifting motion, the lead screws are connected with the connecting pieces in an inserted mode, the connecting pieces are fixed to the gear box, the gear box is fixed to the lower end of the table top frame, the lead screws, the table legs and the table top frame can be detachably connected, packaging, carrying and carrying are convenient, a consumer can assemble the table conveniently, and the mounting and dismounting efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lifting table, especially to a single motor lifting table dismounting screw rod assembly. BACKGROUND

[0002] The lifting table is also called learning table or lifting office table, which can meet the health office needs of personnel of different heights to realize the standing and sitting alternation office by using the lifting characteristics. At present, more and more office personnel choose the lifting table to work. The lifting table generally includes the electric lifting table and the manual lifting table, the former adopts the motor to drive the lifting, and the latter adopts the crank to drive the lifting. The single motor driven lifting table in the electric lifting table is also called single motor lifting table or single motor electric lifting table. The first speed reduction assembly driven by the motor and the second speed reduction assembly driven by the transmission rod of the existing lifting table are arranged in the integral gear box, and the table leg screw rod assembly is assembled together, so that the space is large, and the transportation is inconvenient. SUMMARY

[0003] In order to solve the technical defects in the background art, the utility model aims at providing a single motor lifting table dismounting screw rod assembly.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme:

[0005] A single motor lifting table dismounting screw rod assembly, which comprises two table legs, a transmission rod, two screw rods, two groups of speed reduction transmission devices and a motor driving device; a screw rod is arranged in each of the two table legs, and the screw rod is threadedly connected with the table leg; the speed reduction transmission device comprises a connecting piece and a gear box; the connecting piece is fixed in the gear box, the lower end of the connecting piece is provided with a plug-in slot, and the upper end of the screw rod is fixed in the plug-in slot; the two ends of the transmission rod are connected to the corresponding gear boxes; the motor driving device is connected with the transmission rod to drive the two screw rods to move up and down through the two gear boxes.

[0006] By adopting the above technical scheme, the motor driving device drives the two screw rods to rotate through the transmission rod and the two groups of speed reduction transmission devices, the two screw rods are reversed to realize the lifting movement, the screw rod is plug-in connected with the connecting piece, the connecting piece is fixed on the gear box, the gear box is fixed on the lower end of the table top frame, the screw rod, the table leg and the table top frame can be detachably connected, the packaging, carrying and carrying are convenient, the consumer can assemble conveniently, and the installation and disassembly efficiency is high.

[0007] Furthermore, the gearbox includes a first reduction gear, a second reduction gear, and a housing. Both the first and second reduction gears are housed within the housing. The first reduction gear includes a first wheel body and a first rack. The first wheel body is fitted onto the connecting member, and the first rack is arranged around the end of the first wheel body near the lead screw, with the teeth of the first rack facing upwards. The second reduction gear includes a second wheel body and a second rack. The second wheel body is fitted and fixed to the end of the transmission rod, and the length directions of the first and second wheel bodies are perpendicular. The second rack is located on the periphery of the end of the second wheel body near the first wheel body. The teeth of the second rack face the first wheel body, and the second rack meshes with the first rack, resulting in a compact structure and stable, upward-moving transmission. The connecting member is fixedly connected to the first wheel body, resulting in a compact structure and cost-effectiveness.

[0008] Furthermore, the first wheel body has a mounting groove along its length, and the mounting groove has a polygonal cross-section to prevent relative rotation between the first wheel body and the connecting member when the first wheel body rotates, thereby improving transmission efficiency. One end of the connecting member is fixed in the mounting groove, and the other end of the connecting member protrudes from the housing body, and the other end of the connecting member is provided with the insertion groove.

[0009] Furthermore, the cross-section of the insertion slot is set as a hexagonal structure, and the upper end of the lead screw is provided with a hexagonal insertion strip, which is inserted into the insertion slot. The structure is simple and the installation and disassembly are more convenient.

[0010] Furthermore, the speed reduction transmission device also includes a fixing bolt. The upper end of the connector is provided with a connecting groove, and the connecting groove is threaded. One end of the fixing bolt is fixed to the outside of the housing, and the other end of the fixing bolt passes through the housing and is threaded into the connecting groove, making installation and disassembly convenient and assembly easy.

[0011] Furthermore, a bearing seat is provided between the table leg and the gearbox. The bearing seat is fitted around the lead screw and connected to the lead screw bearing. The upper end of the bearing seat is connected to the table frame, which facilitates fixing the bearing of the bearing seat to the table frame. The bearing seat also helps to improve the efficiency of the lifting movement of the lead screw.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] The utility model discloses a single motor lifting table dismounting quality screw rod assembly through motor drive arrangement through transmission link, two groups of speed reducer drive two screw rods to rotate, and two screw rods reverse to realize lifting motion, and screw rod and connecting piece insert connection, and connecting piece is fixed on gear box, and gear box is fixed on the lower end of desktop frame, can realize screw rod, table leg and the detachable connection of desktop frame, convenient for packing, carrying, convenient to use, and consumer assembles, and the installation and dismounting efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of an embodiment of single motor lifting table dismounting quality screw rod assembly of the utility model.

[0015] Figure 2 It is the front view of an embodiment of single motor lifting table dismounting quality screw rod assembly of the utility model.

[0016] Figure 3 It is Figure 2 It is the section structure schematic diagram of A-A in

[0017] Figure 4 It is Figure 3 It is the enlarged schematic view of B structure in

[0018] Figure 5 It is the structure schematic diagram of an embodiment of single motor lifting table dismounting quality screw rod assembly of the utility model.

[0019] Figure 6 It is the structure schematic diagram of an embodiment of gear mesh connection of single motor lifting table dismounting quality screw rod assembly of the utility model.

[0020] Figure 7 It is the structure schematic diagram of an embodiment of connecting piece of single motor lifting table dismounting quality screw rod assembly of the utility model.

[0021] The reference numerals in the drawings are explained as follows:

[0022] 1, single motor lifting table dismounting quality screw rod assembly;2, table leg;3, transmission link;4, screw rod;41, insert strip;42, bearing seat;5, speed reducer;51, connecting piece;511, insert slot;52, gear box;521, first speed reduction gear;5211, first wheel body;5212, first rack;5213, installation slot;522, second speed reduction gear;5221, second wheel body;5222, second rack;5223, recess;523, box body;5231, clamping plate;524, fixed bolt. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all the other embodiments obtained by those skilled in the art belong to the scope of protection of the present utility model.

[0024] Those skilled in the art should understand that, in the disclosure of the present utility model, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the present utility model.

[0025] In the description of the present utility model, if there is a word such as "several" or the like, the meaning is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If the first, second, third is described, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0026] The following will be described in detail with reference to the drawings of the embodiments of the present utility model. Figures 1-7 The embodiments of the present utility model will be further described in detail.

[0027] A single-motor lifting table disassembly version lead screw assembly 1, as shown in Figure 1 , Figure 2 , Figure 3 It includes two table legs 2, a transmission rod 3, two lead screws 4, two groups of speed reduction transmission devices 5 and a motor driving device. The inside of the two table legs 2 is provided with a lead screw 4, and the lead screw 4 is threadedly connected with the table leg 2. The speed reduction transmission device 5 includes a connecting piece 51 and a gear box 52. The connecting piece 51 is fixed in the gear box 52, and the lower end of the connecting piece 51 is provided with a plug-in slot 511, and the upper end of the lead screw 4 is fixed in the plug-in slot 511. The two ends of the transmission rod 3 are connected to the corresponding gear boxes 52. The motor driving device is connected with the transmission rod 3 to drive the two lead screws 4 to move up and down at the same time through the two gear boxes 52. The motor driving device is not shown in the figure.

[0028] The motor driving device drives two lead screws 4 to rotate through a transmission rod 3 and two groups of speed reduction transmission devices 5, and the two lead screws 4 rotate in opposite directions to realize the lifting movement. The lead screw 4 is insertedly connected with a connecting piece 51, the connecting piece 51 is fixed on a gear box 52, the gear box 52 is fixed on the lower end of the desktop frame, the lead screw 4, the table leg 2 and the desktop frame can be detachably connected, which is convenient for packaging, carrying, assembling, and has high installation and dismounting efficiency, reduces the probability of installation error, and is convenient for manufacturers to design and produce.

[0029] In some embodiments, referring to Figure 4 , Figure 6 , the gear box 52 comprises a first speed reduction gear 521, a second speed reduction gear 522 and a box body 523. The first speed reduction gear 521 and the second speed reduction gear 522 are arranged in the box body 523. The first speed reduction gear 521 comprises a first wheel body 5211 and a first rack 5212. The first wheel body 5211 is sleeved on the connecting piece 51, and the first rack 5212 is arranged around one end of the first wheel body 5211 close to the lead screw 4. The tooth opening of the first rack 5212 is arranged upward. The second speed reduction gear 522 comprises a second wheel body 5221 and a second rack 5222. The second wheel body 5221 is sleeved and fixed on the end of the transmission rod 3. The length directions of the first wheel body 5211 and the second wheel body 5221 are arranged vertically. The second rack 5222 is arranged on the end of the side of the second wheel body 5221 close to the first wheel body 5211. The tooth opening of the second rack 5222 is arranged toward the side of the first wheel body 5211. The second rack 5222 is meshingly connected with the first rack 5212, the structure is compact, the transmission connection is stable and high. The connecting piece 51 is fixedly connected with the first wheel body 5211, the structure is compact, and the cost is saved.

[0030] In some embodiments, referring to Figure 4 , Figure 6 , Figure 7 , the first wheel body 5211 is provided with a mounting groove 5213 along the length direction thereof. The cross section of the mounting groove 5213 is a polygonal structure, which prevents the relative rotation between the first wheel body 5211 and the connecting piece 51 when the first wheel body 5211 rotates, and improves the transmission efficiency. One end of the connecting piece 51 is fixed in the mounting groove 5213, and the other end of the connecting piece 51 protrudes from the box body 523 and is provided with an insertion groove 511.

[0031] Specifically, the cross section of the insertion groove 511 is a hexagonal structure, and the upper end of the lead screw 4 is provided with a hexagonal insertion strip 41 which is inserted into the insertion groove 511. The structure is simple, and the installation and dismounting are more convenient.

[0032] In some embodiments, referring to Figure 1 , Figure 4The speed reducer 5 further comprises a fixing bolt 524. The upper end of the connecting piece 51 is provided with a connecting groove, and the fixing bolt 524 is fixed to the outer side of the box body 523 at one end and is screwed into the connecting groove at the other end, so that the speed reducer 5 is convenient to assemble and disassemble.

[0033] The box body 523 comprises an upper shell and a lower shell. The upper shell and the lower shell are fixedly connected by screws to form a closed cavity. The end positions of the upper shell and the lower shell corresponding to the first wheel body 5211 are provided with a through hole. The through hole of the upper shell is used for mounting the fixing bolt 524, and the through hole of the lower shell is used for connecting the other end of the connecting piece 51, so that the lead screw 4 can be accurately inserted into the insertion groove 511. The upper shell and the lower shell are both provided with a semicircular inner hole at the end facing the transmission rod 3. The inner holes of the upper shell and the lower shell surround the circumferential side of the second wheel body 5221. The circumferential side of the end of the second wheel body 5221 away from the first wheel body 5211 is provided with an annular groove 5223, and the inner sides of the upper shell and the lower shell are correspondingly provided with a clamping plate 5231 clamped in the groove 5223. The clamping plate 5231 can fix the second wheel body 5221, the box body 523 and the transmission rod 3, so that the structure connection is more stable.

[0034] In some embodiments, please refer to Figure 4 、 Figure 5 The bearing seat 42 is sleeved on the circumferential side of the lead screw 4 and is bearing-connected with the lead screw 4. The upper end of the bearing seat 42 is connected with the tabletop frame, so that the bearing in the bearing seat 42 and the tabletop frame are fixedly connected, and the bearing seat 42 is also conducive to improving the efficiency of the lifting movement of the lead screw 4.

[0035] In use, the two groups of speed reducers 5, transmission rods 3 and motor driving devices are installed on the tabletop frame. The lower end of the lead screw 4 is screwed into the inside of the table leg 2 through the bearing seat 42, and the upper end of the bearing seat 42 is fixed to the tabletop frame. The motor driving device is started, the motor driving device drives the transmission rod 3 to rotate, the transmission rod 3 drives the second wheel body 5221 to rotate, and the second rack 5222 on the second wheel body 5221 is engaged with the first rack 5212 to drive the first wheel body 5211 to rotate. The connecting piece 51 is fixed to the first wheel body 5211 by the fixing bolt 524, and the first wheel body 5211 drives the connecting piece 51 to rotate synchronously. Since the lead screw 4 is inserted into the insertion groove 511 of the connecting piece 51, the rotation of the connecting piece 51 drives the lead screw 4 to rotate, and the lead screw 4 is screwed with the table leg 2, so that the up-down movement of the lead screw 4 can be realized to adjust the height of the tabletop. When disassembling, the lead screw 4 is only pulled out of the insertion port, so that the table leg 2 and the tabletop frame can be separated, and the assembly and disassembly are very convenient.

[0036] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A single-motor lifting table detachable lead screw assembly, characterized in that, The device includes two table legs (2), a transmission rod (3), two lead screws (4), two sets of speed reduction transmission devices (5), and a motor drive device. Each of the two table legs (2) has a lead screw (4) inside, and the lead screw (4) is threadedly connected to the table leg (2). The speed reduction transmission device (5) includes a connector (51) and a gearbox (52). The connector (51) is fixed in the gearbox (52), and the lower end of the connector (51) is provided with a insertion groove (511). The upper end of the lead screw (4) is fixed in the insertion groove (511). Both ends of the transmission rod (3) are connected to the corresponding gearbox (52). The motor drive device is connected to the transmission rod (3) to drive the two lead screws (4) to move up and down simultaneously through the two gearboxes (52).

2. The single-motor lifting table detachable lead screw assembly according to claim 1, characterized in that, The gearbox (52) includes a first reduction gear (521), a second reduction gear (522), and a housing (523); both the first reduction gear (521) and the second reduction gear (522) are disposed within the housing (523); the first reduction gear (521) includes a first wheel body (5211) and a first rack (5212), the first wheel body (5211) is fitted onto the connecting member (51), and the first rack (5212) is arranged around the end of the first wheel body (5211) near the lead screw (4), with the teeth of the first rack (5212) facing upwards; the second reduction gear (522) includes a first reduction gear (5211), a second reduction gear (522), and a third reduction gear (522). The first wheel (5221) and the second rack (5222) are mounted on the end of the transmission rod (3). The first wheel (5211) and the second wheel (5221) are arranged perpendicularly in the length direction. The second rack (5222) is arranged on the periphery of the end of the second wheel (5221) near the first wheel (5211). The teeth of the second rack (5222) are arranged on the side of the first wheel (5211). The second rack (5222) is meshed with the first rack (5212). The connecting piece (51) is fixedly connected to the first wheel (5211).

3. The single-motor lifting table detachable lead screw assembly according to claim 2, characterized in that, The first wheel body (5211) is provided with a mounting groove (5213) along its length direction, and the cross section of the mounting groove (5213) is a polygonal structure; one end of the connector (51) is fixed in the mounting groove (5213), the other end of the connector (51) protrudes from the housing (523), and the other end of the connector (51) is provided with the insertion groove (511).

4. The single-motor lifting table detachable lead screw assembly according to claim 3, characterized in that, The cross-section of the insertion groove (511) is set as a hexagonal structure, and the upper end of the lead screw (4) is provided with a hexagonal insertion strip (41), which is inserted into the insertion groove (511).

5. The single-motor lifting table detachable lead screw assembly according to claim 3, characterized in that, The speed reduction transmission device (5) also includes a fixing bolt (524); the upper end of the connector (51) is provided with a connecting groove, the connecting groove is provided with a thread, one end of the fixing bolt (524) is fixed to the outside of the housing (523), and the other end of the fixing bolt (524) passes through the housing (523) and is threaded into the connecting groove.

6. The single-motor lifting table detachable lead screw assembly according to claim 1, characterized in that, A bearing seat (42) is also provided between the table leg (2) and the gearbox (52). The bearing seat (42) is fitted around the lead screw (4) and is connected to the lead screw (4) bearing. The upper end of the bearing seat (42) is connected to the table frame.

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