Expansion connecting piece for splicing intelligent travel cabin frame

Abstract

The utility model belongs to the technical field of expansion connecting pieces, and discloses an expansion connecting piece for splicing an intelligent travel cabin framework, which comprises an outer cylinder, a threaded rod is in threaded connection with the inner part of the outer cylinder, and a moving rod is in threaded connection with the outer part of the threaded rod; through cooperation of a threaded rod, a movable rod, an inclined block, a limiting block and other structures, the threaded rod is prevented from being excessively tightened, then the installation precision is improved, one end of each inclined block is in an inclined plane shape, so that a square plate can extrude the two inclined blocks to move oppositely after moving downwards, and then a connecting column at the bottom end of the limiting block slides along a track of an inclined groove; the arc-shaped groove is formed in the surface of the top end of the threaded rod, so that the limiting block moves upwards to drive the round rod to be clamped into the arc-shaped groove, then the round rod abuts against the inner wall of the threaded rod, continuous rotation of the threaded rod is limited, damage to the luggage compartment frame due to excessive tightening is prevented, and the overall mounting precision of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of expansion connecting piece, specifically a kind of expansion connecting piece for wisdom travel cabin framework splicing. BACKGROUND

[0002] Expansion connecting piece is a kind of mechanical fitting for connecting or fixing component, it is widely applied in wisdom travel cabin framework splicing, expansion connecting piece is mainly used to connect and fix each module or component of cabin body, to ensure the stability and safety of structure.

[0003] For example, the utility model with publication number CN212177608U discloses an expansion connecting piece, including expansion rod, limiting sleeve and hollow structure expansion body, expansion body includes expansion section, limiting section and limiting disc, limiting disc is located between expansion section and limiting section, limiting sleeve is sleeved on limiting section;Expansion rod includes screw end, driving end and limiting medium, limiting medium is located in the middle of expansion rod, screw end and driving end are located at both ends of expansion respectively, driving end is arranged in expansion body for driving expansion section expansion.The utility model not only can be completely hidden between board when connecting board, but also can simplify the connecting process of board and improve the reliability of board connection;

[0004] The above device can be hidden in the board when connected by the cooperation between various structures, but since the expansion rod is not provided with a limiting component during rotation, the expansion rod can be over-tightened, which can cause the expansion sleeve to be broken when excessive axial force acts on the expansion sleeve, especially for some poor quality or thin-walled expansion sleeves, when bearing extrusion force beyond its limit, cracks can easily appear at the thin-walled part or opening of the pipe wall, thus causing the expansion function to fail, at the same time, over-tightening can also cause cracks on the inner wall of the installed base body, thus affecting the overall installation accuracy of the device, therefore, an expansion connecting piece for wisdom travel cabin framework splicing is proposed to solve the problems in the background art. UTILITY MODEL CONTENTS

[0005] To solve the problems in the above background art, the utility model provides an expansion connecting piece for wisdom travel cabin framework splicing, which has the advantages of preventing the threaded rod from being over-tightened, thus improving the installation accuracy.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A kind of inflation connecting piece for wisdom travel cabin frame splicing, including outer tube, the inside screw thread connection of the outer tube has threaded rod, the outside screw thread connection of the threaded rod has moving rod, the outer wall of the outer tube is annularly arranged at equal angles Arc plate, the outer wall of the arc plate is fixedly connected with gasket, the inner wall of the arc plate is annularly arranged at equal angles Two groups of connecting rods, the outer wall of the outer tube is equipped with inflation pipe plug, the top of the moving rod is fixedly connected with square plate, the inside of the outer tube is symmetrically movably connected with two inclined blocks and limit block, the inner wall of the inclined block is provided with inclined slot, the bottom of the inclined block is fixedly connected with spring piece.

[0007] Preferably, the number of the connecting rods is four, and the ends of the connecting rods away from the arc plate are hinged to the moving rod.

[0008] Preferably, the gasket is made of rubber material, the outer wall of the top of the arc plate abuts against the inner wall of the inflation pipe plug, and the inner wall of the outer tube is provided with a sliding groove for limiting the arc plate.

[0009] Preferably, the opposite ends of the two inclined blocks are beveled, and the square plate abuts against the bevels of the two moving rods after moving downward.

[0010] Preferably, the inclined blocks are elastically connected to the outer tube by the spring pieces, the two inclined slots are oppositely directed, and the bottom of the limit block is provided with a connecting column movably clamped in the inclined slot.

[0011] Preferably, the top of the threaded rod penetrates through the outer wall of the outer tube and extends to the outside of the outer tube, and the surface of the top of the threaded rod is provided with an arc-shaped groove.

[0012] Preferably, the limit block is composed of a square plate and a round rod, the inner wall of the outer tube is provided with a square groove for limiting the limit block in the vertical direction, and the limit block drives the round rod to be clamped in the arc-shaped groove after moving upward.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discloses a cooperation between threaded rod, movable rod inclined block and spacing block etc. structure, thereby prevent threaded rod over tighten, and further improve the installation accuracy, the one end of inclined block is inclined, thereby make square plate can extrude two inclined blocks opposite movement after moving down, and further make the connecting column of spacing block bottom end along the track of inclined groove slide, the inner wall of outer tube is provided with the square groove of limiting inclined groove, thereby make the connecting column only drive spacing block move up, the surface of threaded rod top end is provided with arc groove, thereby make spacing block drive round bar after moving up and insert into arc groove inside, and further round bar and threaded rod inner wall abut, thereby limit threaded rod continue to rotate, prevent over tighten and cause damage to the frame of the tourism cabin, and further improve the installation accuracy of device whole. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the right section structure schematic diagram of the utility model;

[0017] Figure 3 It is the threaded rod, arc plate, gasket and inclined block position relation schematic diagram of the utility model

[0018] Figure 4 It is Figure 2 The enlarged view of A in the middle;

[0019] Figure 5 It is the explosion view of inclined block of the utility model.

[0020] In the drawing: 1, outer tube;2, threaded rod;3, movable rod;4, arc plate;5, gasket;6, connecting rod;7, sliding groove;8, expansion pipe plug;9, square plate;10, inclined block;11, inclined groove;12, elastic sheet;13, spacing block;14, arc groove. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0022] As Figures 1 to 5The utility model provides a kind of inflation connecting piece for wisdom cultural and travel cabin frame splicing shown, including outer tube 1, the inside screw thread connection of outer tube 1 has threaded rod 2, threaded rod 2 is externally threaded and is connected with moving rod 3, the outside annular isopolygon of outer tube 1 is provided with arc plate 4, the outer wall of arc plate 4 is fixedly connected with gasket 5, the inner wall annular of arc plate 4 is provided with two groups of connecting rods 6, the outside of outer tube 1 is equipped with inflation pipe plug 8, the top of moving rod 3 is fixedly connected with square plate 9, the inside of outer tube 1 is symmetrically movably connected with two inclined blocks 10 and limit block 13, the inner wall of inclined block 10 is provided with inclined slot 11, the bottom of inclined block 10 is fixedly connected with elastic sheet 12.

[0023] Adopt the above scheme: the end of inclined block 10 is beveled, so that square plate 9 can extrude two inclined blocks 10 to move oppositely after moving down, so that the connecting column at the bottom of limit block 13 slides along the track of inclined slot 11, the inside wall of outer tube 1 is provided with square slot for limiting inclined slot 11, so that the connecting column can only drive limit block 13 to move up, the surface of the top of threaded rod 2 is provided with arc slot 14, so that limit block 13 drives round rod to be clamped into the inside of arc slot 14 after moving up, and then the round rod abuts against the inner wall of threaded rod 2, so as to limit the continuous rotation of threaded rod 2, prevent over-tightening from damaging the cultural and travel cabin frame, and improve the installation accuracy of the device as a whole.

[0024] As shown in Figure 1 and Figure 4 , the number of one group of connecting rods 6 is four, the end of connecting rod 6 away from arc plate 4 is hinged to moving rod 3, the outer wall of inflation pipe plug 8 is toothed, gasket 5 is made of rubber material, the outer wall of the top of arc plate 4 abuts against the inner wall of inflation pipe plug 8, the inside wall of outer tube 1 is provided with sliding groove 7 for limiting arc plate 4, the opposite end of two inclined blocks 10 is beveled, square plate 9 abuts against the bevel of two moving rods 3 after moving down.

[0025] Adopt the above scheme: the outer wall of inflation pipe plug 8 is toothed, which can embed into the surface of the frame during the expansion of inflation pipe plug 8, like countless small hooks inserted into the tiny pores and uneven places of the material, so as to greatly increase the contact area between inflation pipe plug 8 and the inner wall of the frame, and improve the overall shear resistance of outer tube 1.

[0026] Gasket 5 is made of rubber material, which can effectively prevent outer tube 1 from loosening or rotating due to vibration or external impact, and improve the overall fixing and connecting effect of the device.

[0027] As shown in Figures 2 to 5As shown, the inclined block 10 is elastically connected with the outer cylinder 1 through the elastic sheet 12, the two inclined grooves 11 are opposite to each other, the bottom end of the limiting block 13 is provided with a connecting column movably clamped in the inclined groove 11, the top end of the threaded rod 2 penetrates through the outer wall of the outer cylinder 1 and extends to the outside of the outer cylinder 1, the surface of the top end of the threaded rod 2 is provided with an arc-shaped groove 14, the limiting block 13 is composed of a square plate and a round rod, the inner wall of the outer cylinder 1 is provided with a square groove for limiting the limiting block 13 in the vertical direction, and the round rod is clamped into the inside of the arc-shaped groove 14 after the limiting block 13 moves upward.

[0028] By adopting the above scheme: through the design of the elastic sheet 12, when it is needed to take out the device, the threaded rod 2 is reversely rotated, the square plate 9 is driven to move upward through the moving rod 3, the square plate 9 is released from the extrusion of the inclined block 10, then the two inclined blocks 10 are reset under the elastic force of the elastic sheet 12, the limiting block 13 moves downward and is released from the limiting of the threaded rod 2, and then the device is convenient for use next time.

[0029] Specifically by Figure 3 As can be seen from the description, the arc-shaped groove 14 is in an arc shape, and when the threaded rod 2 is reversely rotated, the round rod at the top end of the limiting block 13 will first slide in the inside of the arc-shaped groove 14 until the square plate 9 is released from the abutment with the moving rod 3, and at this time, the limiting block 13 is separated from the inside of the arc-shaped groove 14.

[0030] The working principle and use process of the utility model are as follows: the operator inserts the outer cylinder 1 into the inside of the two frames of the intelligent cultural and travel warehouse that need to be spliced, then the threaded rod 2 is rotated, the moving rod 3 drives the square plate 9 to move downward, the moving rod 3 moves downward at the same time, the two groups of connecting rods 6 drive the four arc-shaped plates 4 to move towards the outside of the outer cylinder 1 respectively, the arc-shaped plate 4 drives the gasket 5 to move in the same direction, the outer wall of the gasket 5 abuts against the inner wall of the cultural and travel warehouse frame and forms friction and resistance, the arc-shaped plate 4 moves at the same time, the top part of the arc-shaped plate 4 also extrudes the inner wall of the expansion tube plug 8, the expansion tube plug 8 is expanded, the expansion tube plug 8 is tightly clamped in the inner wall of the frame, and the outer cylinder 1 is stably fixed at the frame splicing position.

[0031] After the square plate 9 moves downward by a distance, the bottom part of the square plate 9 abuts against the inclined surfaces of the two inclined blocks 10, the two inclined blocks 10 are extruded to move oppositely, the connecting column at the bottom of the limiting block 13 slides upward along the track of the inclined groove 11, when the bottom part of the square plate 9 abuts against the inner wall of the outer cylinder 1, the limiting block 13 drives the round rod at the top end of the limiting block 13 to be clamped into the inside of the arc-shaped groove 14, and the round rod abuts against the inner wall at one end of the arc-shaped groove 14, so as to limit the threaded rod 2 from continuing to rotate, thereby preventing the threaded rod 2 from being excessively tightened and causing damage to the frame of the intelligent cultural and travel warehouse.

[0032] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An inflation connecting piece for splicing a smart travel cabin framework, comprising an outer cylinder (1), characterized in that: The outer cylinder (1) is internally threaded with a threaded rod (2), the threaded rod (2) is externally threaded with a moving rod (3), the outer cylinder (1) is externally annularly equiangularly provided with an arc plate (4), the outer wall of the arc plate (4) is fixedly connected with a gasket (5), the inner wall of the arc plate (4) is annularly equiangularly provided with two groups of connecting rods (6), the outer cylinder (1) is externally sleeved with an expansion pipe plug (8), the top end of the moving rod (3) is fixedly connected with a square plate (9), the inner part of the outer cylinder (1) is symmetrically movably connected with two inclined blocks (10) and a limiting block (13), the inner wall of the inclined block (10) is provided with an inclined groove (11), and the bottom end of the inclined block (10) is fixedly connected with an elastic sheet (12).

2. The inflation connecting piece for the framework splicing of the smart travel cabin according to claim 1, characterized in that: The number of one group of the connecting rods (6) is four, one end of the connecting rod (6) away from the arc plate (4) is hinged to the moving rod (3), and the outer wall of the expansion pipe plug (8) is in the form of teeth.

3. The inflation connecting piece for the framework splicing of the smart travel cabin according to claim 1, characterized in that: The gasket (5) is made of rubber material, the outer wall of the top end of the arc plate (4) abuts against the inner wall of the expansion pipe plug (8), and the inner wall of the outer cylinder (1) is provided with a sliding groove (7) for limiting the arc plate (4).

4. The inflation connecting piece for the framework splicing of the smart travel cabin according to claim 1, characterized in that: The opposite end of the two inclined blocks (10) is in the form of an inclined surface, and the square plate (9) abuts against the inclined surfaces of the two moving rods (3) after moving downward.

5. The inflation connecting piece for the framework splicing of the smart travel cabin according to claim 1, characterized in that: The inclined block (10) is elastically connected with the outer cylinder (1) through the elastic sheet (12), the directions of the two inclined grooves (11) are opposite, and the bottom end of the limiting block (13) is provided with a connecting column movably clamped in the inclined groove (11).

6. The inflation connecting piece for the framework splicing of the smart travel cabin according to claim 1, characterized in that: The top end of the threaded rod (2) penetrates through the outer wall of the outer cylinder (1) and extends to the outside of the outer cylinder (1), and the surface of the top end of the threaded rod (2) is provided with an arc-shaped groove (14).

7. The inflation connecting piece for the framework splicing of the smart travel cabin according to claim 1, characterized in that: The limiting block (13) is composed of a square plate and a round rod, the inner wall of the outer cylinder (1) is provided with a square groove for limiting the limiting block (13) in the vertical direction, and the round rod is clamped into the inside of the arc-shaped groove (14) after the limiting block (13) moves upward.

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