Recyclable and durable modular bolt type connecting piece
By introducing a rotating component and an adjusting component into the pin-type connector, the locking and length adjustment of the pin are realized, solving the problem that existing connectors cannot adapt to different situations and improving the durability and stability of the connector.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SOUTHWEST JIAOTONG UNIV
- Filing Date
- 2025-07-30
- Publication Date
- 2026-05-19
AI Technical Summary
Existing pin-type connectors have a simple structure, cannot be adjusted in length, are not suitable for assembling building modules in different scenarios, and lack a locking mechanism, which makes the pins easy to fall off, resulting in insufficient strength and short service life.
A recyclable and durable modular pin-type connector was designed. By setting a rotating component and an adjusting component, the locking and length adjustment of the pin can be realized. The connector includes a limit block, a rotating component, and an adjusting component. The limit block is locked by the angle between it and the pin, and the adjusting component adjusts the length of the connecting rod.
It effectively prevents the pins from falling off due to the shaking of the building modules, adapts to different spacing between building modules, and extends the service life of the connectors.
Smart Images

Figure CN224259612U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of construction, specifically a recyclable and durable modular pin-type connector. Background Technology
[0002] Modular assembly structures break down buildings into modular "units," efficiently completing the construction processes of the modules, such as structure, decoration, water and electricity, equipment pipelines, and bathroom facilities, in the factory. On-site, these units are quickly assembled into a complete building using reliable connection technology. This technology moves buildings from the construction site to the factory, significantly shortening the construction period and reducing construction difficulty.
[0003] Connectors are needed when connecting building modules. The most widely used type is the pin-type connector. However, the current connectors have a relatively simple structure, cannot be adjusted in length, and are not suitable for assembling building modules in different scenarios. Moreover, the pins used to connect the connecting rod to the building module do not have a locking mechanism. During the movement of the building module, the pins may fall off due to shaking. In addition, the existing pin-type connectors are not strong enough and have a short service life. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a recyclable and durable modular pin-type connector. This solves the problems of existing connectors having simple structures, being unable to adjust length, being unsuitable for assembling building modules in different scenarios, lacking locking mechanisms for the pins used to connect the connecting rods to the building modules, potentially causing the pins to fall off due to shaking during the movement of the building modules, and having insufficient strength and short service life.
[0005] A recyclable and durable modular pin-type connector includes a first connecting rod and a second connecting rod. Each of the first and second connecting rods has a connector head at one end. A pin is movably connected inside the connector head. A limit block is provided at the bottom of the pin. A rotating component is provided at the connection between the limit block and the pin. A first connecting block and a second connecting block are fixedly connected to one side of the first and second connecting rods, respectively. An adjusting component is provided at the connection between the first and second connecting blocks. A fixing head is provided at the other end of the first and second connecting rods.
[0006] Preferably, the rotating assembly includes a slot, a rotating block, a rotating groove, and a rotating rod. The slot is located at the bottom of the pin. The rotating block is fixedly connected to the top of the limiting block and movably connected to the slot. The rotating groove is located on the inner walls of both sides of the slot. The rotating rod is fixedly connected to both sides of the rotating block and rotatably connected to the rotating groove.
[0007] Preferably, the rotating assembly further includes a cavity, a first sliding groove, a connecting groove, a pull rod, a first slider, and a first spring. The cavity is formed inside a set of rotating rods. The first sliding groove is formed on the top and bottom inner walls of the cavity. The connecting groove is formed inside the pin and communicates with the set of rotating grooves. The pull rod is movably connected to the connecting groove and passes through one side of the inner wall of the cavity and extends into the cavity. The first slider is fixedly connected to the inner end of the pull rod and slidably connected to the first sliding groove. The first spring is fixedly installed inside the cavity and its two ends are respectively fixedly connected to one side of the first slider and one side of the inner wall of the cavity.
[0008] Preferably, the rotating assembly further includes a slot, a locking block, and a first pulling block. The slot is formed on one side surface of the bottom of the pin. The locking block is fixedly connected to the outer periphery of the pull rod near the outer end and is adapted to the size of the slot. The first pulling block is fixedly connected to the outer end of the pull rod.
[0009] Preferably, the adjustment assembly includes an adjustment groove, an adjustment block, a fixing hole, a through hole, and a fixing rod. The adjustment groove is located in the middle of one side of the first connecting block. The adjustment block is fixedly connected to the middle of one side of the second connecting block and slidably connected to the adjustment groove. Several fixing holes are provided and penetrate through the adjustment block. The through hole penetrates the inner wall of the top of the adjustment groove. The fixing rod is movably connected to the through hole and is adapted to the size of the fixing hole.
[0010] Preferably, the adjustment assembly further includes a second slide groove, a second slider, a second spring, and a second pull block. The second slide groove is formed in the inner wall of the through hole. The second slider is fixedly connected to the fixed rod and slidably connected to the second slide groove. The second spring is sleeved on the outer periphery of the fixed rod and its two ends are respectively fixedly connected to the top of the second slider and the inner wall of the top of the second slide groove. The second pull block is fixedly connected to the top of the fixed rod.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. This utility model features a rotating assembly. Pulling the first pull block outward causes it to move the locking block outward via a pull rod. During this process, the first slider slides outward along the first groove and stretches the first spring. When the locking block moves out of the groove, the pull rod is rotated, causing the rotating rod to rotate via the first slider and the first groove. This, in turn, causes the limiting block to rotate. When the angle between the limiting block and the pin is 90°, the first pull block is released, the first spring rebounds, and the pull rod moves inward via the first slider. When the locking block moves inward with the pull rod until it is inserted into the groove, the pull rod is fixed in its current position, thus maintaining the angle between the limiting block and the pin at 90°. This design can lock the connection between the building module and the connecting rod using the limiting block, preventing the pin from falling off due to the shaking of the building module.
[0013] 2. This utility model features an adjustment component. Pulling the second pull block upward causes the fixed rod to move upward, and the second slider compresses the second spring. After the fixed rod moves out of the fixed hole, the adjustment block slides along the adjustment groove. When the total length of the first connecting rod and the second connecting rod matches the spacing of the building modules, the second pull block is released, the second spring rebounds, and the second slider moves the fixed rod downward. When the fixed rod is inserted into the fixed hole at the current position, the adjustment block is fixed at the current position, thus maintaining the current total length of the first connecting rod and the second connecting rod. This design allows for adjustment of the total length of the connecting rod at any time, making it suitable for building module connections in different situations. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the adjustment component structure of this utility model;
[0016] Figure 3 for Figure 1 Enlarged view of point A in the middle;
[0017] Figure 4 This is a schematic diagram of the rotating component structure of this utility model;
[0018] Figure 5 for Figure 4 Enlarged view of section B in the middle.
[0019] In the picture:
[0020] 1. First connecting rod; 2. Second connecting rod; 3. Connector head; 4. Pin; 5. Limiting block; 6. Rotating assembly; 61. Empty groove; 62. Rotating block; 63. Rotating slot; 64. Rotating rod; 65. Cavity; 66. First sliding groove; 67. Connecting groove; 68. Pull rod; 69. First slider; 610. First spring; 611. Slot; 612. Slot; 613. First pull block; 7. First connecting block; 8. Second connecting block; 9. Adjusting assembly; 91. Adjusting groove; 92. Adjusting block; 93. Fixing hole; 94. Through hole; 95. Fixing rod; 96. Second sliding groove; 97. Second slider; 98. Second spring; 99. Second pull block; 10. Fixing head. Detailed Implementation
[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0022] As attached Figure 1 To be continued Figure 5 As shown:
[0023] Example 1: This utility model provides a recyclable and durable modular pin-4 connector, including a first connecting rod 1 and a second connecting rod 2. Each of the first connecting rod 1 and the second connecting rod 2 has a connector 3 at one end. A pin 4 is movably connected inside the connector 3. A limit block 5 is provided at the bottom of the pin 4. A rotating component 6 is provided at the connection between the limit block 5 and the pin 4. A first connecting block 7 and a second connecting block 8 are fixedly connected to one side of the first connecting rod 1 and the second connecting rod 2, respectively. A fixing head 10 is provided at the other end of each of the first connecting rod 1 and the second connecting rod 2. The first connecting rod 1 and the second connecting rod 2 are made of alloy structural steel and galvanized to improve bending strength and prevent corrosion. The pin 4 is made of martensitic stainless steel, and the limit block 5 is made of 316L stainless steel, jointly improving the overall strength and durability of the device.
[0024] Furthermore, the rotating assembly 6 includes a slot 61, a rotating block 62, a rotating groove 63, and a rotating rod 64. The slot 61 is located at the bottom of the pin 4. The rotating block 62 is fixedly connected to the top of the limiting block 5 and movably connected to the slot 61. The rotating groove 63 is located on both sides of the inner wall of the slot 61. The rotating rod 64 is fixedly connected to both sides of the rotating block 62 and rotatably connected to the rotating groove 63. The rotating assembly 6 also includes a cavity 65, a first sliding groove 66, a connecting groove 67, a pull rod 68, a first slider 69, and a first spring 610. The cavity 65 is located inside a set of rotating rods 64. The first sliding groove 66 is located on the top and bottom inner walls of the cavity 65. The connecting groove 67 is located inside the pin 4 and communicates with a set of rotating grooves 63. The pull rod 68 is movably connected to the connecting groove 67 and passes through it. The first slider 69 is fixedly connected to the inner end of the pull rod 68 and slidably connected to the first groove 66. The first spring 610 is fixedly installed inside the cavity 65 and its two ends are respectively fixedly connected to one side of the first slider 69 and one side of the inner wall of the cavity 65. The rotating assembly 6 also includes a slot 611, a block 612 and a first pull block 613. The slot 611 is opened on one side surface of the bottom of the pin 4. The block 612 is fixedly connected to the outer periphery of the pull rod 68 near the outer end and is adapted to the size of the slot 611. The first pull block 613 is fixedly connected to the outer end of the pull rod 68. The surface of the pull rod 68 is coated with polytetrafluoroethylene (PTFE). The first spring 610 is made of 316 stainless steel wire and has a fatigue resistance of more than 100,000 cycles.
[0025] As can be seen from the above, by providing the rotating component 6, pulling the first pull block 613 outward causes it to move the locking block 612 outward via the pull rod 68. During this process, the first slider 69 slides outward along the first slide groove 66 and stretches the first spring 610. When the locking block 612 moves out of the locking groove 611, rotating the pull rod 68 causes it to rotate via the first slider 69 and the first slide groove 66, thereby causing the limiting block 5 to rotate via the rotating block 62. When the limiting block 5... When the angle between the limiting block 5 and the pin 4 is 90°, the first pull block 613 is released, the first spring 610 rebounds and drives the pull rod 68 to move inward through the first slider 69. When the locking block 612 moves inward with the pull rod 68 into the insertion slot 611, the pull rod 68 can be fixed in the current position, so that the angle between the limiting block 5 and the pin 4 is maintained at 90°. This design can lock the connection between the building module and the connecting rod through the limiting block 5, and prevent the pin 4 from falling off due to the shaking of the building module.
[0026] Example 2: This example is basically the same as the previous example, except that an adjustment component 9 is provided at the connection between the first connecting block 7 and the second connecting block 8. The adjustment component 9 includes an adjustment groove 91, an adjustment block 92, a fixing hole 93, a through hole 94, and a fixing rod 95. The adjustment groove 91 is located in the middle of one side of the first connecting block 7. The adjustment block 92 is fixedly connected to the middle of one side of the second connecting block 8 and slidably connected to the adjustment groove 91. Several fixing holes 93 are provided and penetrate through the adjustment block 92. The through hole 94 penetrates the inner wall of the top of the adjustment groove 91. The fixing rod 95 is movably connected to the through hole 94. The adjustment assembly 9 also includes a second slide groove 96, a second slider 97, a second spring 98, and a second pull block 99, with the second slide groove 96 being formed in the inner wall of the through hole 94. The second slider 97 is fixedly connected to the fixed rod 95 and slidably connected to the second slide groove 96. The second spring 98 is sleeved on the outer periphery of the fixed rod 95 and its two ends are respectively fixedly connected to the top of the second slider 97 and the inner wall of the top of the second slide groove 96. The second pull block 99 is fixedly connected to the top of the fixed rod 95. The second spring 98 is made of 316 stainless steel wire and has a fatigue resistance of more than 100,000 cycles.
[0027] As can be seen from the above, by setting the adjustment component 9, pulling the second pull block 99 upward causes the fixed rod 95 to move upward and the second slider 97 to compress the second spring 98. When the fixed rod 95 moves out of the fixed hole 93, the adjustment block 92 slides along the adjustment groove 91. When the total length of the first connecting rod 1 and the second connecting rod 2 matches the spacing of the building modules, the second pull block 99 is released, the second spring 98 rebounds and drives the fixed rod 95 downward through the second slider 97. When the fixed rod 95 is inserted into the fixed hole 93 at the current position, the adjustment block 92 can be fixed at the current position, so that the first connecting rod 1 and the second connecting rod 2 maintain the current total length. This design can adjust the total length of the connecting rod at any time, so that it can be used for building module connection in different situations.
[0028] Working principle: When connecting two building modules, first observe the distance between the building modules. Then, pull the second pull block 99 upwards to move the fixing rod 95 upwards and compress the second spring 98 through the second slider 97. After the fixing rod 95 moves out of the fixing hole 93, slide the adjusting block 92 along the adjusting groove 91. When the total length of the first connecting rod 1 and the second connecting rod 2 matches the distance between the building modules, release the second pull block 99. The second spring 98 rebounds and moves the fixing rod 95 downwards through the second slider 97. When the fixing rod 95 is inserted into the fixing hole 93 at the current position, the adjusting block 92 is fixed in the current position, thus maintaining the current total length of the first connecting rod 1 and the second connecting rod 2. Then, remove the pin 4 from the connector 3 and place the connector 3 above the connecting hole of the building module and align it. At this time, insert the pin 4 into the connector 3 and the connecting hole, and then pull the first pull block 613 outward so that it drives the locking block 612 outward through the pull rod 68. During this process, the first slider 69 slides outward along the first slide groove 66 and stretches the first spring 610. When the locking block 612 moves out of the slot 611, rotate the pull rod 68 so that it drives the rotating rod 64 to rotate through the first slider 69 and the first slide groove 66, thereby driving the limiting block 5 to rotate through the rotating block 62. When the angle between the limiting block 5 and the pin 4 is 90°, release the first pull block 613. The first spring 610 rebounds and drives the pull rod 68 to move inward through the first slider 69. When the locking block 612 moves inward with the pull rod 68 to insert into the slot 611, the pull rod 68 can be fixed in the current position, so that the angle between the limiting block 5 and the pin 4 is maintained at 90°.
[0029] The embodiments of this utility model are given for the purpose of illustration and description. Although the embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Any changes, modifications, substitutions and variations made by those skilled in the art to the above embodiments within the scope of this utility model should be included within the protection scope of this utility model.
Claims
1. A recyclable and durable modular pin-type connector, characterized in that: It includes a first connecting rod (1) and a second connecting rod (2). One end of the first connecting rod (1) and the second connecting rod (2) is provided with a connector (3). A pin (4) is movably connected inside the connector (3). A limit block (5) is provided at the bottom of the pin (4). A rotating component (6) is provided at the connection between the limit block (5) and the pin (4). A first connecting block (7) and a second connecting block (8) are fixedly connected to one side of the first connecting rod (1) and the second connecting rod (2), respectively. An adjusting component (9) is provided at the connection between the first connecting block (7) and the second connecting block (8). A fixing head (10) is provided at the other end of the first connecting rod (1) and the second connecting rod (2).
2. The recyclable and durable modular pin-type connector as described in claim 1, characterized in that: The rotating assembly (6) includes a slot (61), a rotating block (62), a rotating groove (63), and a rotating rod (64). The slot (61) is located at the bottom of the pin (4). The rotating block (62) is fixedly connected to the top of the limiting block (5) and movably connected to the slot (61). The rotating groove (63) is located on the inner walls of both sides of the slot (61). The rotating rod (64) is fixedly connected to both sides of the rotating block (62) and rotatably connected to the rotating groove (63).
3. The recyclable and durable modular pin-type connector as described in claim 2, characterized in that: The rotating assembly (6) further includes a cavity (65), a first slide groove (66), a connecting groove (67), a pull rod (68), a first slider (69), and a first spring (610). The cavity (65) is opened inside a set of rotating rods (64). The first slide groove (66) is opened on the inner wall of the top and bottom of the cavity (65). The connecting groove (67) is opened inside the pin (4) and communicates with a set of rotating grooves (63). The pull rod (68) is movably connected to the connecting groove (67) and passes through the inner wall of one side of the cavity (65) and extends into the cavity (65). The first slider (69) is fixedly connected to the inner end of the pull rod (68) and slidably connected to the first slide groove (66). The first spring (610) is fixedly installed inside the cavity (65) and its two ends are respectively fixedly connected to one side of the first slider (69) and one side of the inner wall of the cavity (65).
4. The recyclable and durable modular pin-type connector as described in claim 3, characterized in that: The rotating assembly (6) further includes a slot (611), a block (612), and a first pull block (613). The slot (611) is opened on one side of the bottom of the pin (4). The block (612) is fixedly connected to the outer periphery of the pull rod (68) near the outer end and is adapted to the size of the slot (611). The first pull block (613) is fixedly connected to the outer end of the pull rod (68).
5. The recyclable and durable modular pin-type connector as described in claim 1, characterized in that: The adjustment assembly (9) includes an adjustment groove (91), an adjustment block (92), a fixing hole (93), a through hole (94), and a fixing rod (95). The adjustment groove (91) is located in the middle of one side of the first connecting block (7). The adjustment block (92) is fixedly connected to the middle of one side of the second connecting block (8) and slidably connected to the adjustment groove (91). Several fixing holes (93) are provided and penetrate through the adjustment block (92). The through hole (94) penetrates through the inner wall of the top of the adjustment groove (91). The fixing rod (95) is movably connected to the through hole (94) and is adapted to the size of the fixing hole (93).
6. The recyclable and durable modular pin-type connector as described in claim 1, characterized in that: The adjustment assembly (9) further includes a second slide groove (96), a second slider (97), a second spring (98), and a second pull block (99). The second slide groove (96) is opened on the inner wall of the through hole (94). The second slider (97) is fixedly connected to the fixed rod (95) and slidably connected to the second slide groove (96). The second spring (98) is sleeved on the outer periphery of the fixed rod (95) and its two ends are respectively fixedly connected to the top of the second slider (97) and the inner wall of the top of the second slide groove (96). The second pull block (99) is fixedly connected to the top of the fixed rod (95).