Multi-layer flat plate parallel telescopic structure

Abstract

The invention provides a multi-layer flat plate parallel telescopic structure which comprises a plate frame mechanism and two outer toothed plate mechanisms, and the plate frame mechanism comprises a lower top plate, an upper top plate and a transition flat plate; wherein the upper top plate is arranged on one side of the lower top plate, the transition flat plate is arranged between the upper top plate and the lower top plate, the two outer toothed plate mechanisms are symmetrically arranged on the two sides of the transition flat plate in a staggered mode, and the two inner toothed plate mechanisms are symmetrically arranged between the two outer toothed plate mechanisms and the transition flat plate; the outer toothed plate mechanism and the inner toothed plate mechanism are used for guiding the outer rack and the inner rack in a gear meshing mode, the parallelism and stability of the parallel telescopic structure are guaranteed, meanwhile, the requirement of the telescopic structure for the working environment is lowered, the inner toothed plate mechanism can be used for being combined with the outer rack and the inner rack at the same time, and the working efficiency is improved. And the overall load capacity of the telescopic structure is ensured, so that the load requirement of the maximum stroke is met.

Description

Technical Field

[0001] The present invention relates to a parallel telescopic structure, specifically a multi-layer flat plate parallel telescopic structure, belonging to the technical field of telescopic structures. Background Technique

[0002] A parallel telescopic structure is a structure used in various application scenarios that require telescoping while maintaining axial parallel stability. Especially in the large-stroke application of multi-layer pneumatic airbags stacked, the design of the parallel telescopic structure is particularly important. It mainly ensures that when the airbags telescope, each layer of airbags can move synchronously, maintaining axial parallelism and stability, so as to achieve precise control of the large stroke.

[0003] Traditional large-stroke telescopic structures mostly adopt telescopic sleeve structures or multi-section electric cylinder structures. Although the existing structures can effectively ensure axial parallelism and stability during the telescoping process, their maximum stroke is limited, they have high requirements for the working environment, and when the stroke continuously increases, their load capacity will gradually decrease due to the influence of the structure itself. Especially for the last section of the multi-section electric cylinder, the load capacity is limited. Therefore, a multi-layer flat plate parallel telescopic structure is proposed. Summary of the Invention

[0004] In view of this, the present invention provides a multi-layer flat plate parallel telescopic structure to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] The technical solution of the embodiment of the present invention is implemented as follows: A multi-layer flat plate parallel telescopic structure includes a plate frame mechanism and two outer tooth plate mechanisms. The plate frame mechanism includes a lower top plate, an upper top plate, and a transition flat plate.

[0006] Among them, the upper top plate is arranged on one side of the lower top plate, the transition flat plate is arranged between the upper top plate and the lower top plate, the two outer tooth plate mechanisms are symmetrically and staggeredly arranged on both sides of the transition flat plate, two inner tooth plate mechanisms are symmetrically arranged between the two outer tooth plate mechanisms and the transition flat plate, the two inner tooth plate mechanisms are staggeredly arranged, and a rack structure is arranged between the lower top plate, the upper top plate, and the transition flat plate.

[0007] Among them, the rack structure includes eight outer racks and four inner racks.

[0008] Among them, one end of four of the outer racks is fixedly connected to the side of the lower top plate close to the transition flat plate, one end of the other four outer racks is fixedly connected to the side of the upper top plate close to the transition flat plate, the eight outer racks are all staggeredly arranged, four of the inner racks are respectively fixedly connected in pairs on both sides of the transition flat plate, and the four inner racks are all staggeredly arranged.

[0009] Among them, the outer tooth plate mechanism guides the outer rack by means of gear meshing.

[0010] Among them, the inner tooth plate mechanism guides the outer rack and the inner rack by means of gear meshing.

[0011] Further preferably, both of the outer tooth plate mechanisms include an outer flat plate, four first single-layer support blocks, four first fixed shafts, and eight first outer gears;

[0012] Among them, the outer flat plate is arranged on one side of the transition flat plate. The four first single-layer support blocks are divided into two groups and are fixedly connected to both sides of the outer flat plate in a staggered manner. The four first fixed shafts are respectively fixedly connected to the inner side walls of the two groups of first single-layer support blocks. The eight first outer gears are respectively rotatably connected to both ends of the four first fixed shafts.

[0013] Further preferably, both of the inner tooth plate mechanisms include an inner flat plate, two double-layer support blocks, four second fixed shafts, four second outer gears, four inner gears, two second single-layer support blocks, two third fixed shafts, and four third outer gears;

[0014] Among them, the inner flat plate is arranged between the outer flat plate and the transition flat plate. The two double-layer support blocks are symmetrically and fixedly connected to one side of the inner flat plate close to the transition flat plate. The four second fixed shafts are divided into two groups. One group of second fixed shafts is fixedly connected to the bottom of the inner side walls of the two double-layer support blocks. The four second outer gears are all rotatably connected to both ends of one group of second fixed shafts. The other group of second fixed shafts is fixedly connected to the top of the inner side walls of the two double-layer support blocks. The four inner gears are all rotatably connected to both ends of the other group of second fixed shafts.

[0015] Further preferably, the two second single-layer support blocks are symmetrically and fixedly connected to one side of the inner flat plate away from the transition flat plate. The two third fixed shafts are fixedly connected to the inner side walls of the two second single-layer support blocks. The four third outer gears are all rotatably connected to both ends of the two third fixed shafts. The two second single-layer support blocks and the two double-layer support blocks are arranged in a staggered manner.

[0016] Further preferably, the rack structure further includes a plurality of single tooth grooves and a plurality of double tooth grooves;

[0017] Among them, a plurality of the single tooth grooves are all opened on one side of the transition flat plate, the outer flat plate, and the inner flat plate. A plurality of the double tooth grooves are all opened on one side of the outer flat plate and the inner flat plate. The outer side wall of the outer rack is slidably connected to the inner side walls of the single tooth grooves and the double tooth grooves. The outer side wall of the inner rack is slidably connected to one side of the inner side wall of the double tooth groove.

[0018] Further preferably, the outer side of the external rack is meshed and connected to the outer side walls of the first external gear, the second external gear and the third external gear, and the outer side of the internal rack is meshed and connected to the outer side wall of the internal gear.

[0019] Further preferably, external through holes are evenly formed in one sides of the lower top plate, the upper top plate, the transition flat plate, the outer flat plate and the inner flat plate, and central holes are formed in the middle parts of the transition flat plate, the outer flat plate and the first fixed shaft.

[0020] Due to the adoption of the above technical solutions in the embodiments of the present invention, the following advantages are achieved:

[0021] 1. In the present invention, the external tooth plate mechanism and the internal tooth plate mechanism are used to guide the external rack and the internal rack by means of gear meshing. While ensuring the parallelism and stability of the parallel telescopic structure, the requirements for the working environment of the telescopic structure are reduced, and the internal tooth plate mechanism can be used to be combined with both the external rack and the internal rack at the same time, ensuring the overall load capacity of the telescopic structure to meet the load requirements of the maximum stroke.

[0022] 2. The multi-layer flat plate parallel telescopic structure of the present invention can be used in various application scenarios that require telescoping while maintaining axial parallel stability. Especially in the large-stroke application of multi-layer pneumatic airbag superposition, compared with the prior art, the multi-layer flat plate parallel telescopic structure of the present invention has a larger stroke. In the large-stroke of multi-layer pneumatic airbag superposition, by using the external tooth plate mechanism and the internal tooth plate mechanism as the joint surfaces for docking each layer of airbag, the axial stability of the multi-layer airbag during large-stroke operation can be effectively achieved.

[0023] The above summary is only for the purpose of the specification and is not limited in any way. In addition to the above-described illustrative aspects, embodiments and features, further aspects, embodiments and features of the present invention will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 is the structural diagram of the present invention;

[0026] Figure 2 is the cross-sectional structural schematic diagram of the present invention;

[0027] Figure 3 is the exploded view of the present invention;

[0028] Figure 4 Is the axonometric view of the lower top plate of the present invention;

[0029] Figure 5 Is the axonometric view of the transition flat plate of the present invention;

[0030] Figure 6 Is the axonometric view of the outer flat plate of the present invention;

[0031] Figure 7 Is the axonometric view of the inner flat plate of the present invention.

[0032] Reference numerals: 1, plate frame mechanism; 2, outer tooth plate mechanism; 3, inner tooth plate mechanism; 4, rack structure; 101, lower top plate; 102, upper top plate; 103, transition flat plate; 201, outer flat plate; 202, first single-layer support block; 203, first fixed shaft; 204, first outer gear; 301, inner flat plate; 302, double-layer support block; 303, second fixed shaft; 304, second outer gear; 305, inner gear; 306, second single-layer support block; 307, third fixed shaft; 308, third outer gear; 401, outer rack; 402, inner rack; 403, single tooth groove; 404, double tooth groove; 51, external through hole; 52, central hole. Detailed implementation manners

[0033] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary in nature rather than restrictive.

[0034] It should be noted that terms such as "first", "second", "symmetric", "array", etc. are only used for the purpose of distinguishing descriptions and position descriptions, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "symmetric", etc. can explicitly or implicitly include one or more of such features; similarly, when there is no numerical limitation on certain features in the form of words such as "two", "three", etc., it should be noted that such features also belong to explicitly or implicitly including one or more feature quantities.

[0035] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0036] As Figures 1-7 shown, the embodiment of the present invention provides a multi-layer flat plate parallel telescopic structure, including a plate frame mechanism 1 and two outer tooth plate mechanisms 2. The plate frame mechanism 1 includes a lower top plate 101, an upper top plate 102 and a transition flat plate 103;

[0037] Among them, the upper top plate 102 is arranged on one side of the lower top plate 101, the transition flat plate 103 is arranged between the upper top plate 102 and the lower top plate 101, two outer toothed plate mechanisms 2 are symmetrically and staggeredly arranged on both sides of the transition flat plate 103, two inner toothed plate mechanisms 3 are symmetrically arranged between the two outer toothed plate mechanisms 2 and the transition flat plate 103, the two inner toothed plate mechanisms 3 are staggeredly arranged, and a rack structure 4 is arranged between the lower top plate 101, the upper top plate 102 and the transition flat plate 103;

[0038] Among them, the rack structure 4 includes eight outer racks 401 and four inner racks 402;

[0039] Among them, one end of four outer racks 401 is fixedly connected to the side of the lower top plate 101 close to the transition flat plate 103, one end of the other four outer racks 401 is fixedly connected to the side of the upper top plate 102 close to the transition flat plate 103, the eight outer racks 401 are all staggeredly arranged, four inner racks 402 are respectively fixedly connected in pairs on both sides of the transition flat plate 103, and the four inner racks 402 are all staggeredly arranged;

[0040] Among them, the outer toothed plate mechanism 2 guides the outer rack 401 by means of gear meshing;

[0041] Among them, the inner toothed plate mechanism 3 guides the outer rack 401 and the inner rack 402 by means of gear meshing.

[0042] In one embodiment, both of the two outer toothed plate mechanisms 2 include an outer flat plate 201, four first single-layer support blocks 202, four first fixed shafts 203 and eight first outer gears 204;

[0043] Among them, the outer flat plate 201 is arranged on one side of the transition flat plate 103, the four first single-layer support blocks 202 are divided into two groups and are staggeredly fixedly connected to both sides of the outer flat plate 201, the four first fixed shafts 203 are respectively fixedly connected to the inner side walls of the two groups of first single-layer support blocks 202, and the eight first outer gears 204 are respectively rotatably connected to both ends of the four first fixed shafts 203;

[0044] The first single-layer support block 202 is used to support the first fixed shaft 203, and the eight staggeredly arranged first outer gears 204 are used to simultaneously mesh with the four outer racks 401 to increase the stability of the outer rack 401 when following the movement of the lower top plate 101 or the upper top plate 102.

[0045] In one embodiment, both of the two inner toothed plate mechanisms 3 include an inner flat plate 301, two double-layer support blocks 302, four second fixed shafts 303, four second outer gears 304, four inner gears 305, two second single-layer support blocks 306, two third fixed shafts 307 and four third outer gears 308;

[0046] Among them, the inner flat plate 301 is arranged between the outer flat plate 201 and the transition flat plate 103. Two double-layer support blocks 302 are symmetrically and fixedly connected to one side of the inner flat plate 301 close to the transition flat plate 103. The four second fixed shafts 303 are divided into two groups. One group of second fixed shafts 303 is fixedly connected to the bottoms of the inner side walls of the two double-layer support blocks 302. The four second outer gears 304 are all rotatably connected to both ends of one group of second fixed shafts 303. The other group of second fixed shafts 303 is fixedly connected to the tops of the inner side walls of the two double-layer support blocks 302. The four inner gears 305 are all rotatably connected to both ends of the other group of second fixed shafts 303. Two second single-layer support blocks 306 are symmetrically and fixedly connected to one side of the inner flat plate 301 far from the transition flat plate 103. Two third fixed shafts 307 are fixedly connected to the inner side walls of the two second single-layer support blocks 306. The four third outer gears 308 are all rotatably connected to both ends of the two third fixed shafts 307. The two second single-layer support blocks 306 and the two double-layer support blocks 302 are arranged in a staggered manner;

[0047] The double-layer support blocks 302 provided are used to support the four second fixed shafts 303, and the second single-layer support blocks 306 provided are used to support the two third fixed shafts 307.

[0048] In one embodiment, the rack structure 4 further includes a plurality of single-tooth grooves 403 and a plurality of double-tooth grooves 404;

[0049] Among them, a plurality of single-tooth grooves 403 are all opened on one side of the transition flat plate 103, the outer flat plate 201 and the inner flat plate 301, and a plurality of double-tooth grooves 404 are all opened on one side of the outer flat plate 201 and the inner flat plate 301. The outer side wall of the outer rack 401 is slidably connected to the inner side walls of the single-tooth grooves 403 and the double-tooth grooves 404, and the outer side wall of the inner rack 402 is slidably connected to one side of the inner side wall of the double-tooth grooves 404;

[0050] The outer side of the outer rack 401 is meshed and connected to the outer side walls of the first outer gear 204, the second outer gear 304 and the third outer gear 308, and the outer side of the inner rack 402 is meshed and connected to the outer side wall of the inner gear 305;

[0051] The single-tooth grooves 403 provided are used to guide and limit the outer rack 401, and the double-tooth grooves 404 provided are used to guide and limit the outer rack 401 and the inner rack 402 at the same time.

[0052] In one embodiment, external through holes 51 are evenly opened on one side of the lower top plate 101, the upper top plate 102, the transition flat plate 103, the outer flat plate 201 and the inner flat plate 301, and central holes 52 are opened in the middle of the transition flat plate 103, the outer flat plate 201 and the first fixed shaft 203;

[0053] The externally provided through-hole 51 is used for installing the parallel telescopic structure, and the centrally provided through-hole 52 is used for installing an airbag structure inside the parallel telescopic structure.

[0054] When the present invention is in operation: First, the lower top plate 101, the upper top plate 102, the transition flat plate 103, the external tooth plate mechanism 2, the internal tooth plate mechanism 3, and the rack structure 4 are installed in the form of rack dislocation, and it is ensured that the transition flat plate 103 is located at the center of the multi-layer flat parallel telescopic structure. After the overall structure is assembled, installation is carried out according to actual requirements.

[0055] When the parallel telescopic structure extends as a whole or extends individually, the first external gears 204 on the two external tooth plate mechanisms 2 are respectively meshed with the external racks 401 on the lower top plate 101 and the upper top plate 102. So when the lower top plate 101 or the upper top plate 102 drives the external rack 401 to move, the moving external rack 401 drives the first external gear 204 to rotate by means of the tooth pattern. At the same time, the moving external rack 401 drives the second external gear 304 to rotate by means of the tooth pattern to ensure the stability of the lower top plate 101 or the upper top plate 102 during the movement process. The single tooth groove 403 provided is used for guiding and limiting the external rack 401, and the double tooth groove 404 provided is used for guiding and limiting the external rack 401 and the internal rack 402 simultaneously.

[0056] When one end of the external rack 401 moves to the position of the second external gear 304, the formation of the lower top plate 101 or the upper top plate 102 reaches the maximum. Then the inner flat plate 301 drives the internal gear 305 to move along the internal rack 402. When one end of the internal rack 402 moves to the position of the internal gear 305, the parallel telescopic structure reaches the maximum. At this time, the second external gear 304 and the internal gear 305 on the inner flat plate 301 are still meshed with the external rack 401 and the internal rack 402 simultaneously, and the external rack 401 and the internal rack 402 still maintain a certain formation overlap, enabling the internal tooth plate mechanism 3 to effectively lock the relative movement of the external rack 401 and the internal rack 402 by means of the gear and always keep it horizontal.

[0057] When the parallel telescopic structure contracts as a whole, when the external rack 401 comes into contact with the lower top plate 101 and the upper top plate 102 simultaneously, the parallel telescopic structure contracts to the limit, and the transition flat plate 103, the external tooth plate mechanism 2, the internal tooth plate mechanism 3, and the internal rack 402 as a whole are all within the length of the external rack 401.

[0058] The externally provided through-hole 51 is used for installing the parallel telescopic structure according to actual requirements, and the centrally provided through-hole 52 is used for installing an airbag structure inside the parallel telescopic structure according to actual requirements.

[0059] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A multi-layer flat plate parallel telescopic structure, comprising a plate frame mechanism (1) and two outer toothed plate mechanisms (2), characterized in that, The plate frame mechanism (1) includes a lower top plate (101), an upper top plate (102), and a transition flat plate (103); Among them, the upper top plate (102) is arranged on one side of the lower top plate (101), the transition flat plate (103) is arranged between the upper top plate (102) and the lower top plate (101), two of the outer toothed plate mechanisms (2) are symmetrically and staggeredly arranged on both sides of the transition flat plate (103), two inner toothed plate mechanisms (3) are symmetrically arranged between the two outer toothed plate mechanisms (2) and the transition flat plate (103), the two inner toothed plate mechanisms (3) are staggeredly arranged, and a rack structure (4) is arranged between the lower top plate (101), the upper top plate (102), and the transition flat plate (103); Among them, the rack structure (4) includes eight outer racks (401) and four inner racks (402); Among them, one end of four of the outer racks (401) is fixedly connected to the side of the lower top plate (101) close to the transition flat plate (103), the other end of the other four outer racks (401) is fixedly connected to the side of the upper top plate (102) close to the transition flat plate (103), the eight outer racks (401) are all staggeredly arranged, four of the inner racks (402) are respectively fixedly connected in pairs on both sides of the transition flat plate (103), and the four inner racks (402) are all staggeredly arranged; Among them, the outer toothed plate mechanism (2) guides the outer rack (401) by means of gear meshing; Among them, the inner toothed plate mechanism (3) guides the outer rack (401) and the inner rack (402) by means of gear meshing.

2. The multi-layer flat plate parallel telescopic structure according to claim 1, wherein: Both of the two outer toothed plate mechanisms (2) include an outer flat plate (201), four first single-layer support blocks (202), four first fixed shafts (203), and eight first outer gears (204); Among them, the outer flat plate (201) is arranged on one side of the transition flat plate (103), the four first single-layer support blocks (202) are divided into two groups and are staggeredly and fixedly connected to both sides of the outer flat plate (201), the four first fixed shafts (203) are respectively fixedly connected to the inner side walls of the two groups of first single-layer support blocks (202), and the eight first outer gears (204) are respectively rotatably connected to both ends of the four first fixed shafts (203).

3. The multi-layer flat plate parallel telescopic structure according to claim 2, characterized in that: Both of the two inner toothed plate mechanisms (3) include an inner flat plate (301), two double-layer support blocks (302), four second fixed shafts (303), four second outer gears (304), four inner gears (305), two second single-layer support blocks (306), two third fixed shafts (307), and four third outer gears (308); Among them, the inner flat plate (301) is arranged between the outer flat plate (201) and the transition flat plate (103). Two double-layer support blocks (302) are symmetrically and fixedly connected to one side of the inner flat plate (301) close to the transition flat plate (103). The four second fixed shafts (303) are divided into two groups. One group of second fixed shafts (303) is fixedly connected to the bottom of the inner side walls of the two double-layer support blocks (302). The four second outer gears (304) are all rotatably connected to both ends of one group of second fixed shafts (303). The other group of second fixed shafts (303) is fixedly connected to the top of the inner side walls of the two double-layer support blocks (302). The four inner gears (305) are all rotatably connected to both ends of the other group of second fixed shafts (303).

4. The multi-layer flat plate parallel telescopic structure according to claim 3, wherein: Two second single-layer support blocks (306) are symmetrically and fixedly connected to one side of the inner flat plate (301) far from the transition flat plate (103). Two third fixed shafts (307) are fixedly connected to the inner side walls of the two second single-layer support blocks (306). The four third outer gears (308) are all rotatably connected to both ends of the two third fixed shafts (307). The two second single-layer support blocks (306) and the two double-layer support blocks (302) are arranged in a staggered manner.

5. The multi-layer flat plate parallel telescopic structure according to claim 3, characterized in that: The rack structure (4) further includes a plurality of single tooth grooves (403) and a plurality of double tooth grooves (404). Among them, a plurality of the single tooth grooves (403) are all opened on one side of the transition flat plate (103), the outer flat plate (201) and the inner flat plate (301). A plurality of the double tooth grooves (404) are all opened on one side of the outer flat plate (201) and the inner flat plate (301). The outer side wall of the outer rack (401) is slidably connected to the inner side walls of the single tooth grooves (403) and the double tooth grooves (404). The outer side wall of the inner rack (402) is slidably connected to one side of the inner side wall of the double tooth grooves (404).

6. The multi-layer flat plate parallel telescopic structure according to claim 3, wherein: The outer side of the outer rack (401) is meshed and connected to the outer side walls of the first outer gear (204), the second outer gear (304) and the third outer gear (308). The outer side of the inner rack (402) is meshed and connected to the outer side wall of the inner gear (305).

7. The multi-layer flat plate parallel telescopic structure according to claim 3, wherein: One side of the lower top plate (101), the upper top plate (102), the transition flat plate (103), the outer flat plate (201) and the inner flat plate (301) is uniformly provided with external through holes (51). The middle parts of the transition flat plate (103), the outer flat plate (201) and the first fixed shaft (203) are all provided with central holes (52).

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