A connecting device applied between modular building units

Abstract

The present invention discloses a connecting device applied to modular building units, comprising: a self-locking connecting piece provided with a bayonet on the self-locking connecting piece; a first column and a second column connected by the self-locking connecting piece, the self-locking connecting piece is fixedly arranged at one end of the second column, a receiving cavity is arranged at one end of the first column, a limiting rod is arranged in the receiving cavity, the first column is sleeved on the self-locking connecting piece through the receiving cavity, and the limiting rod is clamped with the self-locking connecting piece through the bayonet. In the present invention, one end of the self-locking connecting piece is fixedly arranged on the second column, and the other end is clamped and fixed with the first column through the combination of the bayonet and the limiting rod, and the first column is sleeved on the self-locking connecting piece. Therefore, when the first column and the second column are connected, there is no need to occupy a large construction space, and the splicing can be completed only by aligning one end of the first column with one end of the second column and moving them. The construction is convenient and time-consuming short.

Description

Technical Field

[0001] The present invention relates to the field of modular buildings, and particularly to a connecting device applied between modular building units. Background Art

[0002] In recent years, the society has been continuously promoting the upgrading of building industrialization, digitization, and intelligentization, accelerating the transformation of construction methods, and continuously promoting the high-quality development of the construction industry. Modular building is a new type of building form integrating multiple disciplines that has emerged in recent years. It is a new type of highly prefabricated building. Prefabricated building module units are produced in factories, and then the prefabricated module units are transported to the site for splicing into a complete building. Modular connection nodes are the key to realizing modular building and the reliable service of such structures.

[0003] In the existing connection technologies, the connection forms between modules generally adopt bolt connection or welding connection. These connection methods have disadvantages such as long construction time and large requirements for construction space. The lack of construction space will increase the difficulty of on-site construction. Moreover, for modular buildings serving in harsh environments, the on-site construction conditions are poor. For traditional connection methods, a long construction period cannot guarantee the high-quality on-site splicing of modular building structures. Therefore, proposing a new modular building connection device suitable for rapid connection of modular buildings and not requiring additional construction space is the key to solving the connection problem between modular building units. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the purpose of the present invention is to provide a connecting device applied between modular building units, aiming to solve the problems of long construction time and large construction space required during the connection of modular units in the prior art.

[0005] The technical solution adopted by the present invention to solve the technical problems is as follows:

[0006] In a first aspect, an embodiment of the present invention provides a connecting device applied between modular building units, including:

[0007] A self-locking connector, with a bayonet provided on the self-locking connector;

[0008] A first cylinder and a second cylinder connected by the self-locking connector. The self-locking connector is fixedly arranged at one end of the second cylinder. A receiving cavity is provided at one end of the first cylinder, and a limiting rod is arranged in the receiving cavity. The first cylinder is sleeved on the self-locking connector through the receiving cavity, and the limiting rod is clamped with the self-locking connector through the bayonet.

[0009] As a further improved technical solution, the self-locking connector includes a locking assembly, the locking assembly includes a locking member, a fixing member and a fixing shaft. The fixing member is arranged at one end of the second cylinder body close to the first cylinder body. The locking member and the fixing member are respectively provided with a first through hole and a second through hole. The fixing shaft penetrates through the first through hole and is arranged in the second through hole. The bayonet is arranged on the locking member. The locking member can be opened or closed outward around the fixing shaft. The bayonet is opened or closed synchronously with the locking member. When the locking member is opened, the opening faces the first cylinder body.

[0010] As a further improved technical solution, the locking member includes a first limiting block and a second limiting block which are arranged oppositely. The first limiting block and the second limiting block are respectively provided with the first through hole. The first limiting block and the second limiting block are respectively connected to the fixing member through a fixing shaft. First engaging teeth and second engaging teeth are respectively arranged on two opposite sides of the first limiting block and the second limiting block which are opposite to each other. The first engaging teeth and the second engaging teeth are arranged oppositely and form the bayonet.

[0011] As a further improved technical solution, the fixing member includes a first clamping block, a second clamping block, a first reset elastic member and a second reset elastic member. The first limiting block and the second limiting block are both arranged between the first clamping block and the second clamping block. The first clamping block and the second clamping block are respectively provided with the second through hole. The first limiting block and the second limiting block are respectively connected to the first clamping block and the second clamping block through a fixing shaft. First grooves and second grooves are further respectively arranged on the first clamping block and the second clamping block. The openings of the first groove and the second groove both face the first cylinder body. The first groove and the second groove are both communicated with the bayonet. One end of the first reset elastic member abuts against the side of the first limiting block away from the first engaging teeth, and the other end of the first reset elastic member abuts against the first clamping block and the second clamping block. One end of the first reset elastic member applies a certain elastic force to the first limiting block. One end of the second reset elastic member abuts against the side of the second limiting block away from the second engaging teeth, and the other end of the second reset elastic member abuts against the first clamping block and the second clamping block. One end of the second reset elastic member applies a certain elastic force to the second limiting block. The first limiting block and the second limiting block can respectively overcome the elastic forces of the first reset elastic member and the second reset elastic member and open around the fixing shaft.

[0012] As a further improved technical solution, first slide rods and second slide rods are respectively arranged on two opposite sides of the first limiting block, third slide rods and fourth slide rods are respectively arranged on two opposite sides of the second limiting block, a first sliding groove and a second sliding groove are arranged on one side of the first clamping block close to the second clamping block, a third sliding groove and a fourth sliding groove are arranged on one side of the second clamping block close to the first clamping block, the first slide rod and the second slide rod are respectively arranged in the first sliding groove and the third sliding groove, the third slide rod and the fourth slide rod are respectively arranged in the second sliding groove and the fourth sliding groove, and either the first limiting block or the second limiting block can slide on the first clamping block and the second clamping block.

[0013] As a further improved technical solution, a first clamping groove and a second clamping groove are respectively arranged on two opposite sides of the first limiting block and the second limiting block facing away from each other. Along the opening direction of the engaging member, third clamping grooves and fourth clamping grooves are respectively arranged on two opposite sides of the first clamping block, and fifth clamping grooves and sixth clamping grooves are respectively arranged on two opposite sides of the second clamping block. Among them, a first fixing rod and a second fixing rod are respectively arranged in the third clamping groove and the fourth clamping groove, and a third fixing rod and a fourth fixing rod are respectively arranged in the fifth clamping groove and the sixth clamping groove;

[0014] The first reset elastic member includes a first torsion spring, a second torsion spring and a first connecting rod. One end of the first torsion spring and one end of the second torsion spring are respectively connected to two ends of the first connecting rod. The other ends of the first torsion spring and the second torsion spring are respectively provided with a first torsion rod and a second torsion rod. The first torsion spring and the second torsion spring are respectively sleeved on the first fixing rod and the third fixing rod. The first connecting rod is arranged in the first clamping groove, and the first torsion rod and the second torsion rod are respectively arranged in the third clamping groove and the fifth clamping groove;

[0015] The second reset elastic member includes a third torsion spring, a fourth torsion spring and a second connecting rod. One end of the third torsion spring and one end of the fourth torsion spring are respectively connected to two ends of the second connecting rod. The other ends of the third torsion spring and the fourth torsion spring are respectively provided with a third torsion rod and a fourth torsion rod. The third torsion spring and the fourth torsion spring are respectively sleeved on the second fixing rod and the fourth fixing rod. The second connecting rod is arranged in the second clamping groove, and the third torsion rod and the fourth torsion rod are respectively arranged in the fourth clamping groove and the sixth clamping groove.

[0016] As a further improved technical solution, along the length direction of the first column body, a limiting column is arranged in the accommodating cavity, and two ends of the limiting rod are respectively connected to the limiting column and the inner side wall of the accommodating cavity.

[0017] As a further improved technical solution, the self-locking connector further includes at least two baffle components, each of the baffle components is respectively arranged at one end of the second column body close to the first column body, and one of the locking components is respectively arranged between two adjacent sides of each of the baffle components. The self-locking connector is formed into a column shape by a combination of a plurality of the baffle components and a plurality of the locking components. Along the central axis direction of the self-locking connector, a limiting hole is arranged on the self-locking connector, and the limiting column is arranged in the limiting hole and abuts against the limiting hole.

[0018] As a further improved technical solution, the baffle component includes a top cover plate, an inner side plate and an outer side plate; one ends of the inner side plate and the outer side plate are arranged on the second column body, the top cover plate is arranged at one end of the inner side plate and the outer side plate away from the second column body, a gap is left between the inner side plate and the outer side plate, the inner side plate abuts against the limiting column, one side edge of the outer side plate and one side edge of the inner side plate are both connected to one side of the fixing member, and when the locking member opens outwards, one end of the locking member close to the first column body extends into the gap.

[0019] As a further improved technical solution, the self-locking connector further includes a bottom plate, the baffle components and the locking components are all arranged on one side of the bottom plate, and the other side of the bottom plate is arranged on one end of the second column body close to the first column body.

[0020] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0021] The embodiments of the present invention provide a connecting device applied to modular building units, including:

[0022] A self-locking connector, which is provided with a bayonet thereon; a first column body and a second column body connected by the self-locking connector, the self-locking connector is fixedly arranged at one end of the second column body, a receiving cavity is arranged at one end of the first column body, a limiting rod is arranged in the receiving cavity, the first column body is sleeved on the self-locking connector through the receiving cavity, and the limiting rod is clamped with the self-locking connector through the bayonet. In the present invention, one end of the self-locking connector is fixedly arranged on the second column body, and the other end of the self-locking connector is clamped and fixed to the first column body through the combination of the bayonet and the limiting rod, so as to realize the connection of the first column body and the second column body through the self-locking connector, and the first column body is sleeved on the self-locking connector. Therefore, when the first column body and the second column body are connected, it is not necessary to occupy a large construction space, and only need to move one end of the first column body to align with one end of the second column body to complete the splicing, and the construction is convenient and time-consuming. Description of the Drawings

[0023] Figure 1Explosion diagram of a connection device applied between modular building units provided by the present invention;

[0024] Figure 2 Schematic three-dimensional structure diagram of the self-locking connector in the present invention;

[0025] Figure 3 First schematic three-dimensional structure diagram of the locking assembly in the present invention;

[0026] Figure 4 Second schematic three-dimensional structure diagram of the locking assembly in the present invention;

[0027] Figure 5 Explosion diagram of the locking assembly in the present invention;

[0028] Figure 6 First schematic three-dimensional structure diagram of the first limiting block in the present invention;

[0029] Figure 7 Second schematic three-dimensional structure diagram of the first limiting block in the present invention;

[0030] Figure 8 First schematic three-dimensional structure diagram of the second limiting block in the present invention;

[0031] Figure 9 Second schematic three-dimensional structure diagram of the second limiting block in the present invention;

[0032] Figure 10 First schematic three-dimensional structure diagram of the first clamping block in the present invention;

[0033] Figure 11 Second schematic three-dimensional structure diagram of the first clamping block in the present invention;

[0034] Figure 12 First schematic three-dimensional structure diagram of the second clamping block in the present invention;

[0035] Figure 13 Second schematic three-dimensional structure diagram of the second clamping block in the present invention;

[0036] Figure 14 Schematic three-dimensional structure diagram of the first cylinder in the present invention;

[0037] Figure 15 Schematic structure diagram after the first cylinder and the limiting rod are assembled in the present invention;

[0038] Figure 16 Schematic three-dimensional structure diagram of the baffle assembly in the present invention;

[0039] Figure 17 Schematic three-dimensional structure diagram of the second embodiment of the self-locking connector provided by the present invention.

[0040] In the figure: 1. Self-locking connector; 101. Limiting hole; 2. First column; 201. Accommodating cavity; 202. Limiting rod; 203. Limiting column; 204. Insertion hole; 3. Second column; 4. Biting assembly; 5. Biting piece; 501. First through hole; 502. Bayonet; 5021. First tooth; 5022. Second tooth; 503. First limiting block; 5031. First sliding rod; 5032. Second sliding rod; 5033. First slot; 504. Second limiting block; 5041. Third sliding rod; 5042. Fourth sliding rod; 5043. Second slot; 6. Fixing piece; 601. Second through hole; 602. First clamping block; 6021. First sliding groove; 6022. Second sliding groove; 6023. Third slot; 6024. Fourth slot; 6025. First fixing rod; 6026. Second fixing rod; 6027. First groove; 603. Second clamping block; 6031. Third sliding groove; 6032. Fourth sliding groove; 6033. Fifth slot; 6034. Sixth slot; 6035. Third fixing rod; 6036. Fourth fixing rod; 6037. Second groove; 604. First reset elastic member; 6041. First torsion spring; 6042. Second torsion spring; 6043. First connecting rod; 6044. First torsion rod; 6045. Second torsion rod; 605. Second reset elastic member; 6051. Third torsion spring; 6052. Fourth torsion spring; 6053. Second connecting rod; 6054. Third torsion rod; 6055. Fourth torsion rod; 7. Fixed shaft; 8. Baffle assembly; 801. Top cover plate; 802. Inner side plate; 803. Outer side plate; 804. Gap; 9. Bottom plate. Detailed implementation mode

[0041] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0042] Embodiment 1:

[0043] Please refer to Figures 1-16 . Among them, the embodiment of the present invention provides a connecting device applied to the connection between modular building units, including: a self-locking connector 1, and a bayonet 502 is provided on the self-locking connector 1; a first column 2 and a second column 3 connected by the self-locking connector 1, the self-locking connector 1 is fixedly arranged at one end of the second column 3, an accommodating cavity 201 is provided at one end of the first column 2, a limiting rod 202 is arranged in the accommodating cavity 201, the first column 2 is sleeved on the self-locking connector 1 through the accommodating cavity 201, and the limiting rod 202 is clamped with the self-locking connector 1 through the bayonet 502.

[0044] As Figures 1-2 shown, in this embodiment, the connecting device applied to modular building units includes a first column 2, a second column 3 and a self-locking connector 1; wherein, the bottom end of the self-locking connector 1 is arranged at the top end of the second column 3, a bayonet 502 is arranged at the top end of the self-locking connector 1, a receiving cavity 201 is arranged at the bottom end of the first column 2, a limiting rod 202 is arranged in the receiving cavity 201, the first column 2 is sleeved on the self-locking connector 1 through the receiving cavity 201, the limiting rod 202 is clamped with the bayonet 502, and the bottom end of the first column 2 abuts against the top end of the second column 3. Therefore, the first column 2 is clamped with the self-locking connector 1, that is, at this time, the first column 2 and the second column 3 are relatively fixed through the self-locking connector 1. At the same time, openings (not shown) are arranged at the ends of the first column 2 and the second column 3 facing away from each other, and materials such as concrete or mortar can be injected into the first column 2 and the second column 3 through the openings to increase the strength at the connection node. In the present invention, one end of the self-locking connector 1 is fixedly arranged on the second column 3, and the other end of the self-locking connector 1 is clamped and fixed with the first column 2 through the combination of the bayonet 502 and the limiting rod 202, so as to realize the connection of the first column 2 and the second column 3 through the self-locking connector 1. Moreover, the first column 2 is sleeved on the self-locking connector 1. Therefore, when the first column 2 and the second column 3 are connected, there is no need to occupy a large construction space, and only by aligning one end of the first column 2 with one end of the second column 3 and moving them, the splicing can be completed. The construction is convenient and time-consuming is short.

[0045] As Figures 2-5As shown, in this embodiment, the self-locking connector 1 includes a locking assembly 4. The locking assembly 4 includes a locking member 5, a fixing member 6, and a fixing shaft 7. The fixing member 6 is disposed at one end of the second cylinder 3 close to the first cylinder 2. The locking member 5 and the fixing member 6 are respectively provided with a first through hole 501 and a second through hole 601. The fixing shaft 7 passes through the first through hole 501 and is disposed in the second through hole 601. The bayonet 502 is disposed on the locking member 5. The locking member 5 can be opened or closed outwardly around the fixing shaft 7. The bayonet 502 is opened or closed synchronously with the locking member 5. When the locking member 5 is opened, the opening faces the first cylinder 2. Specifically, the bottom end of the locking member 5 is connected to the fixing member 6 by the fixing shaft 7. When the end of the first cylinder 2 provided with the limiting rod 202 presses against the self-locking connector 1, the limiting rod 202 first abuts against the top end of the locking member 5, and then the top end of the locking member 5 is opened under the pressure of the limiting rod 202. At this time, the bottom end of the locking member 5 rotates around the fixing shaft 7. When the limiting rod 202 moves into the bayonet 502, the locking member 5 closes. At this time, the locking member 5 is locked with the limiting rod 202. The first cylinder 2 is sleeved on the self-locking connector 1 and abuts against the self-locking connector 1. At this time, the first cylinder 2 and the second cylinder 3 cannot move horizontally or vertically relative to each other.

[0046] As Figures 6-9As shown in the figure, as a further solution, the engaging member 5 includes a first limiting block 503 and a second limiting block 504 which are oppositely arranged. The first through holes 501 are respectively provided on the first limiting block 503 and the second limiting block 504. The first limiting block 503 and the second limiting block 504 are respectively connected to the fixing member 6 through a fixing shaft 7. First teeth 5021 and second teeth 5022 are respectively provided on the opposite sides of the first limiting block 503 and the second limiting block 504. The first teeth 5021 and the second teeth 5022 are oppositely arranged and form the engaging opening 502. Specifically, the first limiting block 503 and the second limiting block 504 have the same structure and size. The first teeth 5021 on the first limiting block 503 and the second teeth 5022 on the second limiting block 504 are oppositely arranged, and the two sets of teeth together form the engaging opening 502. A first through hole 501 is provided at the bottom of each of the first limiting block 503 and the second limiting block 504. A fixing shaft 7 is respectively provided in each of the first through holes 501, and both ends of each fixing shaft 7 are respectively fixed on the fixing member 6. A certain gap is left between the first limiting block 503 and the second limiting block 504, and the top surfaces of the first limiting block 503 and the second limiting block 504 are both arc surfaces. The bottom of the limiting rod 202 is also an arc surface. When the limiting rod 202 is pressed downward towards the engaging member 5, the arc surfaces at the tops of the first limiting block 503 and the second limiting block 504 together guide the limiting rod 202 to descend and enter the engaging opening 502. The bottom surfaces of the first teeth 5021 and the second teeth 5022 are both arc surfaces. When the limiting rod 202 falls into the engaging opening 502, both sides of the limiting rod 202 are respectively in contact with the first teeth 5021 and the second teeth 5022. At the same time, each of these arc surfaces can be replaced by an inclined surface, as long as the bottom surface of the limiting rod 202, the top surfaces of the first limiting block 503 and the second limiting block 504, and the bottom surfaces of the first teeth 5021 and the second teeth 5022 are all arc surfaces or inclined surfaces. In this embodiment, multiple first teeth 5021 and multiple second teeth 5022 can be provided. The multiple first teeth 5021 are arranged along the length direction of the first limiting block 503, and the multiple second teeth 5022 are arranged along the length direction of the second limiting block 504. The multiple first teeth 5021 and the multiple second teeth 5022 form multiple engaging openings 502. Each engaging opening 502 is composed of the opposite first teeth 5021 and second teeth 5022. The number of the limiting rods 202 can also be adjusted according to the number of the engaging openings 502. The structural stability between the first column 2 and the second column 3 can be enhanced by the engagement of multiple limiting rods 202 and multiple engaging openings 502.

[0047] As Figures 10-13As shown in the figure, as a further solution, the fixing member 6 includes a first clamping block 602, a second clamping block 603, a first reset elastic member 604 and a second reset elastic member 605; the first limiting block 503 and the second limiting block 504 are both arranged between the first clamping block 602 and the second clamping block 603. Two of the second through holes 601 are respectively provided on the first clamping block 602 and the second clamping block 603. The first limiting block 503 and the second limiting block 504 are respectively connected to the first clamping block 602 and the second clamping block 603 through a fixing shaft 7. The first clamping block 602 and the second clamping block 603 are also respectively provided with a first groove 6027 and a second groove 6037. The first groove 6027, the second groove 6037 and the bayonet 502 are communicated. Both the first groove 6027 and the second groove 6037 are U-shaped grooves, and the openings of the first groove 6027 and the second groove 6037 face the first column 2. When the first column 2 is engaged with the self-locking connecting member 1, the limiting rod 202 falls into the first groove 6027 and the second groove 6037. The limiting rod 202 is clamped with the bayonet 502 and the bottom of the limiting rod 202 abuts against the bottoms of the first groove 6027 and the second groove 6037. One end of the first reset elastic member 604 abuts against the side of the first limiting block 503 away from the first tooth 5021, and the other end of the first reset elastic member 604 abuts against the first clamping block 602 and the second clamping block 603. One end of the first reset elastic member 604 applies a certain elastic force to the first limiting block 503. One end of the second reset elastic member 605 abuts against the side of the second limiting block 504 away from the second tooth 5022, and the other end of the second reset elastic member 605 abuts against the first clamping block 602 and the second clamping block 603. One end of the second reset elastic member 605 applies a certain elastic force to the second limiting block 504. The first limiting block 503 and the second limiting block 504 can respectively overcome the elastic forces of the first reset elastic member 604 and the second reset elastic member 605 and open around the fixing shaft 7. Specifically, the horizontal height of the tops of the first limiting block 503 and the second limiting block 504 is lower than the horizontal height of the tops of the first clamping block 602 and the second clamping block 603, and the horizontal height of the bottoms of the first limiting block 503 and the second limiting block 504 is higher than the horizontal height of the bottoms of the first clamping block 602 and the second clamping block 603. Therefore, when the first limiting block 503 and the second limiting block 504 open on the clamping block, the bottom and the top will not be blocked.

[0048] In this embodiment, a first slide bar 5031 and a second slide bar 5032 are respectively arranged on two opposite sides of the first limiting block 503, a third slide bar 5041 and a fourth slide bar 5042 are respectively arranged on two opposite sides of the second limiting block 504, a first chute 6021 and a second chute 6022 are arranged on a side of the first clamping block 602 close to the second clamping block 603, a third chute 6031 and a fourth chute 6032 are arranged on a side of the second clamping block 603 close to the first clamping block 602, the first slide bar 5031 and the second slide bar 5032 are respectively arranged in the first chute 6021 and the third chute 6031, the third slide bar 5041 and the fourth slide bar 5042 are respectively arranged in the second chute 6022 and the fourth chute 6032, and either the first limiting block 503 or the second limiting block 504 can slide on the first clamping block 602 and the second clamping block 603. Specifically, the depths and widths of all the chutes are the same, the lengths and widths of all the slide bars are the same, the length of the slide bar is the same as the depth of the chute, the width of the slide bar is the same as the width of the chute, or the length of the slide bar is slightly smaller than the depth of the chute, and the path direction of the chute is adapted to the movement track of the slide bar. When the first limiting block 503 and the second limiting block 504 open or close, the first slide bar 5031 and the second slide bar 5032 slide in the first chute 6021 and the third chute 6031 respectively, and the third slide bar 5041 and the fourth slide bar 5042 slide in the second chute 6022 and the fourth chute 6032 respectively. The cooperation between each chute and the slide bar can make the clamping member 5 more flexible when opening or closing. At the same time, during the downward movement of the limiting rod 202, the opening and closing of the first limiting block 503 and the second limiting block 504 can move along a determined path due to the cooperation between each slide bar and each chute, without deviation, which may affect the engagement between the first limiting block 503 and the second limiting block 504 on both sides and the limiting rod 202. After the first limiting block 503 and the second limiting block 504 are engaged with the limiting rod 202, when there is a tendency for the first cylinder 2 and the second cylinder 3 to separate, the limiting rod 202 applies a pulling force to the first limiting block 503 and the second limiting block 504. In certain cases, the first limiting block 503 and the second limiting block 504 can transmit the force to each chute through each slide bar and then to the first clamping block 602 and the second clamping block 603, so that the clamping assembly 4 can be stressed together, enhancing the integrity of the connecting member. When the first limiting block 503 and the second limiting block 504 are in the initial position, both the first limiting block 503 and the second limiting block 504 are in a vertical state. Since the first limiting block 503 and the second limiting block 504 respectively receive the elastic forces applied by the first reset elastic member 604 and the second reset elastic member 605, one end of each slide bar abuts against one end of each chute far away from the opening at this time, so that the first limiting block 503 and the second limiting block 504 are respectively kept in a vertical state.

[0049] As a further solution, on the two sides of the first limiting block 503 and the second limiting block 504 facing away from each other, a first clamping groove 5033 and a second clamping groove 5043 are respectively provided. The first clamping groove 5033 and the second clamping groove 5043 are both linear clamping grooves arranged horizontally. Along the opening direction of the engaging member 5, on the two opposite sides of the first clamping block 602, a third clamping groove 6023 and a fourth clamping groove 6024 are respectively provided. On the two opposite sides of the second clamping block 603, a fifth clamping groove 6033 and a sixth clamping groove 6034 are respectively provided. The third clamping groove 6023, the fourth clamping groove 6024, the fifth clamping groove 6033 and the sixth clamping groove 6034 are all irregularly shaped clamping grooves, and the shapes of these four clamping grooves are defined according to the structures of the first reset elastic member 604 and the second reset elastic member 605. Among them, a first fixing rod 6025 and a second fixing rod 6026 are respectively provided in the third clamping groove 6023 and the fourth clamping groove 6024, and a third fixing rod 6035 and a fourth fixing rod 6036 are respectively provided in the fifth clamping groove 6033 and the sixth clamping groove 6034;

[0050] The first reset elastic member 604 includes a first torsion spring 6041, a second torsion spring 6042 and a first connecting rod 6043. One end of the first torsion spring 6041 and one end of the second torsion spring 6042 are respectively connected to both ends of the first connecting rod 6043. The other ends of the first torsion spring 6041 and the second torsion spring 6042 are respectively provided with a first torsion rod 6044 and a second torsion rod 6045. The first torsion spring 6041 and the second torsion spring 6042 are respectively sleeved on the first fixing rod 6025 and the third fixing rod 6035. The first connecting rod 6043 is arranged in the first clamping groove 5033, and the first torsion rod 6044 and the second torsion rod 6045 are respectively arranged in the third clamping groove 6023 and the fifth clamping groove 6033. Among them, the first connecting rod 6043 exerts a certain elastic force on the first limiting block 503, and the first torsion rod 6044 and the second torsion rod 6045 respectively exert elastic forces on the first clamping block 602 and the second clamping block 603. Here, the elastic forces received by the first clamping block 602 and the second clamping block 603 are very small. When an external force forces the first limiting block 503 to rotate outward, it is necessary to overcome the elastic force of the first connecting rod 6043. When the external force is withdrawn, the first limiting block 503 returns to its initial position under the elastic force exerted by the first connecting rod 6043.

[0051] The second reset elastic member 605 includes a third torsion spring 6051, a fourth torsion spring 6052 and a second connecting rod 6053. One end of the third torsion spring 6051 and one end of the fourth torsion spring 6052 are respectively connected to both ends of the second connecting rod 6053. The other end of the third torsion spring 6051 and the other end of the fourth torsion spring 6052 are respectively provided with a third torsion rod 6054 and a fourth torsion rod 6055. The third torsion spring 6051 and the fourth torsion spring 6052 are respectively sleeved on the second fixing rod 6026 and the fourth fixing rod 6036. The second connecting rod 6053 is arranged in the second card slot 5043. The third torsion rod 6054 and the fourth torsion rod 6055 are respectively arranged in the fourth card slot 6024 and the sixth card slot 6034. Wherein, the second connecting rod 6053 applies a certain elastic force to the second limiting block 504. The third torsion rod 6054 and the fourth torsion rod 6055 respectively apply elastic forces to the first clamping block 602 and the second clamping block 603. When an external force forces the second limiting block 504 to rotate outwards, it is necessary to overcome the elastic force of the second connecting rod 6053. When the external force is withdrawn, the second limiting block 504 returns to the initial position under the action of the elastic force applied by the second connecting rod 6053. It should be noted that the widths of the first card slot 5033 and the second card slot 5043 are slightly larger than the diameters of the first connecting rod 6043 and the second connecting rod 6053. For example, when the first connecting rod 6043 follows the first limiting block 503 to open outwards, the coils at the first torsion spring 6041 and the second torsion spring 6042 will stretch out a small section. Therefore, the first connecting rod 6043 will move slightly upwards in the first card slot 5033. Therefore, a section of space needs to be reserved in the first card slot 5033 and the second card slot 5043, and the widths of the first card slot 5033 and the second card slot 5043 also determine the opening and closing degrees of the first reset elastic member 604 and the second reset elastic member 605. Reasonably adjusting the widths of the first card slot 5033 and the second card slot 5043 can prevent the first limiting block 503 and the second limiting block 504 from opening too much.

[0052] At the same time, the depths of the card slots in each clamping block are greater than the depths of the card slots on each limiting block, ensuring that the reset elastic member has a greater pressure effect on each limiting block. In this way, after the biting is completed, the reset elastic member can continue to apply pressure to each limiting block through the connecting rod. During the force application process, each limiting block is in a vertical state and will not open, and always maintains the biting state.

[0053] Such as Figures 14-15As shown, as a further solution, along the length direction of the first cylinder 2, a limiting post 203 is provided in the accommodating cavity 201. The limiting post 203 can be welded to the first cylinder 2. Both ends of the limiting rod 202 are respectively connected to the limiting post 203 and the inner side wall of the accommodating cavity 201. Specifically, a jack 204 is provided on the limiting post 203. One end of the limiting rod 202 passes through the jack 204 and is arranged inside the limiting post 203, and the other end of the limiting rod 202 is fixedly connected to the inner side wall of the accommodating cavity 201, such as by welding.

[0054] In this embodiment, the self-locking connector 1 further includes at least two baffle components 8. Each baffle component 8 is respectively arranged at one end of the second cylinder 3 close to the first cylinder 2. A locking component 4 is respectively arranged between two adjacent sides of each baffle component 8. The self-locking connector 1 is formed into a column by the combination of a plurality of baffle components 8 and a plurality of locking components 4. Along the central axis direction of the self-locking connector 1, a limiting hole 101 is provided on the self-locking connector 1. The limiting post 203 is arranged in the limiting hole 101 and abuts against the limiting hole 101. Specifically, there are four baffle components 8 and four locking components 4 respectively. Each locking component 4 is respectively arranged between two adjacent baffle components 8. The four baffle components 8 and the four locking components 4 form a cylinder. When the first cylinder 2 is sleeved on the self-locking connector 1, the side wall of the accommodating cavity 201 abuts against each baffle component 8, and the limiting post 203 is arranged in the limiting hole 101, and the side wall of the limiting post 203 abuts against the side wall of the limiting hole 101. After the limiting post 203 is arranged in the limiting hole 101, the first cylinder 2 cannot move horizontally on the self-locking connector 1 through the cooperation of the limiting post 203 and the limiting hole 101, further strengthening the structural stability between the first cylinder 2 and the second cylinder 3.

[0055] As Figure 16As shown in the figure, as a further solution, the baffle assembly 8 includes a top cover plate 801, an inner side plate 802 and an outer side plate 803; one end of the inner side plate 802 and the outer side plate 803 is arranged on the second cylinder 3, the top cover plate 801 is arranged at one end of the inner side plate 802 and the outer side plate 803 away from the second cylinder 3, a gap 804 is left between the inner side plate 802 and the outer side plate 803, the inner side plate 802 is in contact with the limiting column 203, and one side edge of the outer side plate 803 and one side edge of the inner side plate 802 are both connected to one side of the fixing member 6. When the engaging member 5 opens outwards, the end of the engaging member 5 close to the first cylinder 2 extends into the gap 804. Among them, both side edges of the top cover plate 801 are arc-shaped, and the inner side plate 802 and the outer side plate 803 are arc surfaces; it should be noted that when the limiting column 203 is square, the inner side plate 802 and the outer side plate 803 are flat surfaces.

[0056] As a further step, the self-engaging connector 1 further includes a bottom plate 9, the baffle assembly 8 and the engaging assembly 4 are both arranged on one side of the bottom plate 9, and the other side of the bottom plate 9 is arranged on one end of the second cylinder 3 close to the first cylinder 2. Specifically, the connecting plate is a circular panel, and the bottom surface of the connecting plate is welded to the top end surface of the second cylinder 3. When the first cylinder 2 is sleeved on the self-engaging connector 1 and is fixedly connected with the self-engaging connector 1 by engagement, the bottom end of the first cylinder 2 abuts against the top surface of the connecting plate.

[0057] Embodiment 2:

[0058] The structure of the self-engaging connector 1 in the present invention further includes a second structure as Figure 17 shown. When the self-engaging connector 1 as Figure 17 shown is used, the structure of the second cylinder 3 in the present invention needs to be the same as that of the first cylinder 2. One ends of two first cylinders 2 and second cylinders 3 with the same structure and provided with a receiving cavity 201 are respectively pressed downwards towards both ends of the self-engaging connector 1 and sleeved on the upper end and the lower end of the self-engaging connector 1. The upper end and the lower end of the self-engaging connector 1 are respectively engaged with the first cylinder 2 and the second cylinder 3, so as to realize the fixed connection of the two modular columns.

[0059] In summary, the embodiments of the present invention provide a connecting device applied to modular building units, including:

[0060] Self-locking connector 1, with a bayonet 502 provided on the self-locking connector 1; a first column 2 and a second column 3 connected by the self-locking connector 1, the self-locking connector 1 is fixedly arranged at one end of the second column 3, a receiving cavity 201 is provided at one end of the first column 2, a limiting rod 202 is arranged in the receiving cavity 201, the first column 2 is sleeved on the self-locking connector 1 through the receiving cavity 201, and the limiting rod 202 is clamped with the self-locking connector 1 through the bayonet 502. In the present invention, one end of the self-locking connector 1 is fixedly arranged on the second column 3, and the other end of the self-locking connector 1 is clamped and fixed to the first column 2 through the combination of the bayonet 502 and the limiting rod 202, so as to realize the connection of the first column 2 and the second column 3 through the self-locking connector 1, and the first column 2 is sleeved on the self-locking connector 1. Therefore, when the first column 2 and the second column 3 are connected, they do not need to occupy too much space, and only need to move one end of the first column 2 to align with one end of the second column 3 to complete the splicing, which is convenient for construction and time-consuming.

[0061] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0062] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0064] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0065] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0066] Of course, the above description of the embodiments of the present invention is relatively detailed, but it should not be construed as a limitation on the protection scope of the present invention. The present invention may have other various implementation manners. Based on this implementation manner, other implementation manners obtained by those of ordinary skill in the art without any creative work belong to the protection scope of the present invention. The protection scope of the present invention shall be subject to the appended claims.

Claims

1. A connecting device applied between modular building units, characterized in that, include: A self-engaging connector, wherein the self-engaging connector is provided with a bayonet; A first column and a second column connected by the self-engaging connector, wherein the self-engaging connector is fixedly arranged at one end of the second column, an accommodating cavity is arranged at one end of the first column, a limiting rod is arranged in the accommodating cavity, the first column is sleeved on the self-engaging connector through the accommodating cavity, and the limiting rod is engaged with the self-engaging connector through the bayonet; The self-engaging connector includes an occlusal assembly, which includes an occlusal member, a fixing member and a fixing shaft. The fixing member is arranged at one end of the second column close to the first column. The occlusal member and the fixing member are respectively provided with a first through hole and a second through hole. The fixing shaft passes through the first through hole and is arranged in the second through hole. The bayonet is arranged on the occlusal member. The occlusal member can be opened or closed outwardly around the fixing shaft. The bayonet opens or closes synchronously with the occlusal member. The opening of the occlusal member when opened faces the first column. A limiting column is provided in the accommodating cavity along the length direction of the first column, and two ends of the limiting rod are respectively connected to the limiting column and the inner side wall of the accommodating cavity.

2. The connecting device applied to modular building units according to claim 1, characterized in that, The engaging member includes a first limit block and a second limit block which are arranged opposite to each other, the first limit block and the second limit block are respectively provided with the first through hole, the first limit block and the second limit block are respectively connected to the fixing member through a fixed shaft, the first limit block and the second limit block are respectively provided with a first latch tooth and a second latch tooth on the opposite sides, the first latch tooth and the second latch tooth are respectively arranged opposite to each other and constitute the bayonet.

3. The connecting device for modular building units according to claim 2, characterized in that, The fixing member includes a first clamping block, a second clamping block, a first reset elastic member and a second reset elastic member; the first limit block and the second limit block are both arranged between the first clamping block and the second clamping block, the first clamping block and the second clamping block are respectively provided with a second through hole, the first limit block and the second limit block are respectively connected to the first clamping block and the second clamping block through a fixed shaft; the first clamping block and the second clamping block are also respectively provided with a first groove and a second groove, the openings of the first groove and the second groove are both facing the first column, the first groove and the second groove are both connected to the bayonet, and the first reset elastic member is The first end of the first limit block abuts against a side of the first locking tooth, the other end of the first reset elastic member abuts against the first clamping block and the second clamping block, one end of the first reset elastic member applies a certain elastic force to the first limit block, one end of the second reset elastic member abuts against a side of the second limit block away from the second locking tooth, the other end of the second reset elastic member abuts against the first clamping block and the second clamping block, one end of the second reset elastic member applies a certain elastic force to the second limit block, the first limit block and the second limit block can respectively overcome the elastic force of the first reset elastic member and the elastic force of the second reset elastic member and open around the fixed axis.

4. The connecting device applied to the connection between modular building units according to claim 3, characterized in that, On opposite sides of the first limiting block, a first sliding rod and a second sliding rod are respectively provided. On opposite sides of the second limiting block, a third sliding rod and a fourth sliding rod are respectively provided. On one side of the first clamping block close to the second clamping block, a first sliding groove and a second sliding groove are provided. On one side of the second clamping block close to the first clamping block, a third sliding groove and a fourth sliding groove are provided. The first sliding rod and the second sliding rod are respectively arranged in the first sliding groove and the third sliding groove. The third sliding rod and the fourth sliding rod are respectively arranged in the second sliding groove and the fourth sliding groove. The first limiting block or the second limiting block can slide on the first clamping block and the second clamping block.

5. The connecting device applied to modular building units according to claim 3, characterized in that, On opposite sides of the first limiting block and the second limiting block facing away from each other, a first clamping groove and a second clamping groove are respectively provided. Along the opening direction of the engaging member, on opposite sides of the first clamping block, a third clamping groove and a fourth clamping groove are respectively provided. On opposite sides of the second clamping block, a fifth clamping groove and a sixth clamping groove are respectively provided. Among them, a first fixing rod and a second fixing rod are respectively arranged in the third clamping groove and the fourth clamping groove. A third fixing rod and a fourth fixing rod are respectively arranged in the fifth clamping groove and the sixth clamping groove. The first reset elastic member includes a first torsion spring, a second torsion spring and a first connecting rod. One end of the first torsion spring and one end of the second torsion spring are respectively connected to two ends of the first connecting rod. The other ends of the first torsion spring and the second torsion spring are respectively provided with a first torsion rod and a second torsion rod. The first torsion spring and the second torsion spring are respectively sleeved on the first fixing rod and the third fixing rod. The first connecting rod is arranged in the first clamping groove. The first torsion rod and the second torsion rod are respectively arranged in the third clamping groove and the fifth clamping groove. The second reset elastic member includes a third torsion spring, a fourth torsion spring and a second connecting rod. One end of the third torsion spring and one end of the fourth torsion spring are respectively connected to two ends of the second connecting rod. The other ends of the third torsion spring and the fourth torsion spring are respectively provided with a third torsion rod and a fourth torsion rod. The third torsion spring and the fourth torsion spring are respectively sleeved on the second fixing rod and the fourth fixing rod. The second connecting rod is arranged in the second clamping groove. The third torsion rod and the fourth torsion rod are respectively arranged in the fourth clamping groove and the sixth clamping groove.

6. The connecting device applied to modular building units according to claim 1, characterized in that, The self-engaging connecting member further includes at least two baffle components. Each baffle component is respectively arranged at one end of the second cylinder close to the first cylinder. An engaging component is respectively arranged between adjacent sides of each baffle component. The self-engaging connecting member is formed into a column by the combination of multiple baffle components and multiple engaging components. Along the central axis direction of the self-engaging connecting member, a limiting hole is provided on the self-engaging connecting member. The limiting column is arranged in the limiting hole and abuts against the limiting hole.

7. The connecting device applied to the modular building units according to claim 6, characterized in that, The baffle assembly includes a top cover plate, an inner side plate and an outer side plate; one end of the inner side plate and the outer side plate is arranged on the second cylinder, the top cover plate is arranged at one end of the inner side plate and the outer side plate away from the second cylinder, a gap is left between the inner side plate and the outer side plate, the inner side plate abuts against the limiting column, one side edge of the outer side plate and one side edge of the inner side plate are both connected to one side of the fixing piece, and when the engaging piece opens outwards, one end of the engaging piece close to the first cylinder extends into the gap.

8. The connecting device applied to modular building units according to claim 7, characterized in that, The self-engaging connecting piece further includes a bottom plate, the baffle assembly and the engaging assembly are both arranged on one side of the bottom plate, and the other side of the bottom plate is arranged on one end of the second cylinder close to the first cylinder.

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