An expansion rod type building component docking and locking device

Abstract

The present invention relates to an expansion rod type building component docking and locking device, comprising a docking box, a base, and an expansion rod locking mechanism. The docking box has a conical hole at the bottom thereof for docking with the conical base. The expansion rod locking mechanism comprises a worm gear transmission mechanism, an expansion rod base, a spring, a locking tongue, a friction ring, an expansion rod rotating shaft, and an expansion rod. The expansion rod base is fixed to the base by being connected to a spring in a groove at the upper end of the base. The locking tongue extends through a base channel and the expansion rod base into the docking box. The top of the locking tongue is conical and nested in the friction ring. When the worm gear rotates, the locking tongue can be driven to rotate and move up and down. The expansion rod rotating shaft is mounted on the expansion rod base. The upper portions of the three expansion rods are conical surfaces that surround the locking tongue and the friction ring and can rotate about the rotating shaft. The present invention locks by expanding the expansion rods, can withstand bidirectional loads of tension and compression, has the advantages of being easy to install, can be quickly unlocked manually, and can adapt to certain fitting tolerances, thereby reducing the time required for installation and maintenance.

Description

Technical Field

[0001] The present invention belongs to the technical field of building components, and in particular relates to a self-locking expansion rod-type docking locking device. Background Art

[0002] With the vigorous development of technologies related to the production, transportation, and assembly of prefabricated components, industrialized construction production has become an inevitable trend in future development, with many advantages such as high efficiency, high quality, and low energy consumption. However, at present, the assembly of various prefabricated building components into building products, such as the currently popular folding houses, uses traditional connection methods such as bolting, riveting, and welding to quickly connect and lock the walls or parts of the house after unfolding. These methods require high positioning accuracy between components, high component processing costs, and difficult maintenance, which are obviously difficult to meet the requirements. Therefore, there is an urgent need to develop a building component docking and locking device with a simple structure, time-saving and labor-saving, easy to install, simple to control docking, and able to adapt to certain matching tolerances, so as to make the performance of building products more high-quality and reliable. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a building component docking and locking device with a simple structure, time-saving and labor-saving, easy installation, simple docking control and adaptability to certain matching tolerances.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] An expansion rod type building component docking and locking device, comprising:

[0006] The docking box includes a passage running through the docking box, the passage including a first conical surface at the lower end that is smaller at the top and larger at the bottom, and a second conical surface at the middle that is larger at the top and smaller at the bottom, the first conical surface being connected to the second conical surface;

[0007] The base has a tapered end at its upper end that can be inserted into the docking box, and the tapered end is adapted to the first tapered surface; a channel for installing a locking tongue is provided inside the base; and a groove is provided in the channel;

[0008] a locking tongue, disposed in the channel of the base and capable of extending into the docking box;

[0009] a friction ferrule, which is disposed on the upper end of the lock tongue;

[0010] a spring, mounted in the groove of the base;

[0011] The expansion rod base is installed in the base groove and located above the spring, and can slide relative to the base;

[0012] An expansion rod rotating shaft is mounted on the expansion rod base;

[0013] The expansion rod has a conical surface on the upper part, surrounds the lock tongue and the friction ring and can rotate around the expansion rod rotation axis; when the lock tongue moves downward, the expansion rod rotates outward around the expansion rod rotation axis, and the upper conical surface of the expansion rod contacts the second conical surface of the docking box.

[0014] In order to solve the problem that the expansion rod type building component docking and locking device can adapt to a certain fitting tolerance during docking, so that even if there is a certain deviation in the direction and position of the lock tongue during docking, the docking and locking can still be completed smoothly, and the collision between the base and the docking box is smaller and the collision contact area is larger, the upper end of the base is designed to be a conical surface that fits the docking box. During docking and locking, the docking box and the base are guided to the correct position through the conical surface, and the lock tongue is correctly inserted into the docking box channel to capture the position. In addition, the minimum aperture of the tapered hole of the docking box is larger than the outer diameter of the friction ring, so that the component where the docking box is located and the component where the lock tongue is located allow a certain installation error, thereby reducing manufacturing and installation costs.

[0015] In order to solve the problem of manual unlocking of the expansion rod type building component docking locking device for easy maintenance after docking and locking, the locking device can be unlocked by external commands after docking. The middle and lower sections of the lock tongue are designed as a threaded rod that cooperates with the internal thread of the base channel, and its bottom is designed as a hexagonal thin rod inserted into the worm gear. After the unlocking command is issued, the worm gear system is started, and the rotation of the worm drives the worm gear and the lock tongue to rotate. The lock tongue moves upward through the thread between the base, the expansion rod base is reset upward by the spring, the expansion rod returns to its natural position, and the expansion rod type docking locking device is unlocked.

[0016] The advantage of the present invention is that when locked by the expansion rod type docking locking device, the docking locking process has a large tolerance and is simple to control. After the expansion rod is expanded and locked, the tensile load is borne by the expansion rod and the docking box channel, and the compressive load is borne by the extrusion of the docking box conical surface and the base conical surface. It can bear loads in both directions and can be manually unlocked, saving time and effort and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a north-south cross-sectional view of the expansion rod type docking locking device provided by an embodiment of the present invention in an unlocked state;

[0018] Figure 2 2. It is an east-west cross-sectional view of the expansion rod type docking locking device provided by an embodiment of the present invention in an unlocked state;

[0019] Figure 3 3. It is a schematic diagram of the three-dimensional structure of the expansion rod type docking locking device in the unlocked state provided by an embodiment of the present invention;

[0020] Figure 4 3D structural diagram of the expansion rod locking mechanism in the unlocked state provided by an embodiment of the present invention;

[0021] Figure 5This is a schematic diagram of the three-dimensional structure of the worm gear transmission mechanism and the lock tongue provided by an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the expansion rod locking mechanism in the locked state provided by an embodiment of the present invention;

[0023] Figure 7 is a north-south cross-sectional view of the expansion rod type docking locking device provided by an embodiment of the present invention in a locked state;

[0024] Figure 8 2. It is an east-west cross-sectional view of the expansion rod type docking locking device provided by an embodiment of the present invention in a locked state;

[0025] Figure 9 It is a schematic diagram of the three-dimensional structure of the expansion rod type docking locking device in the locked state provided by an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1- docking box; 2- base; 3- worm gear; 4- worm; 5- spring; 6- expansion rod base; 7- lock tongue; 8- friction ring; 9- expansion rod shaft; 10- expansion rod. DETAILED DESCRIPTION

[0028] In order to make the technical solution and advantages of this application more clear, the technical solution of this application will be further clearly and completely described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only some embodiments of this application and are only used to explain this application, not to limit this application. It should be noted that for the sake of ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can refer to the general design. In the absence of conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0029] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application should be the ordinary meanings understood by ordinary technicians in the field to which this application belongs. The words "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inside", "outside" and other words indicating directions used in the description of this application are only used to indicate relative directions or positional relationships, and do not imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. Therefore, it cannot be understood as a limitation on this application. The words "one", "an" or "the" and similar words used in the description of this application should not be understood as absolute limitations on quantity, but should be understood as the presence of at least one. The words "including" or "comprising" and similar words used in the description of this application mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0030] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the words "install", "connect", "connect" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0031] The following is combined with Figure 1 To the attached Figure 9 This application is described in further detail.

[0032] The expansion rod type building component docking and locking device of the present invention can realize bidirectional load bearing and manual unlocking through worm gear transmission and expansion locking of the expansion rod. It has the advantages of large matching tolerance during the docking process, simple control, and reliable force bearing after locking.

[0033] like Figures 1 to 3As shown, the expansion rod type building component docking and locking device includes a docking box 1 and a base 2 docked with the docking box. The upper end of the docking box 1 includes a cylinder and a conical surface with a larger upper part and a smaller lower part connected to form a channel, and the lower end includes a conical channel with a smaller upper part and a larger lower part. The upper end of the base 2 docked with the docking box 1 is a conical end, and the conical end of the base fits with the conical channel at the lower end of the docking box 1. The diameter of its conical end is slightly smaller than the diameter of the conical channel at the lower end of the docking box, and the conical end of the base can be close to the conical channel of the docking box; the expansion rod type docking device includes an expansion rod locking mechanism, the expansion rod locking mechanism includes a worm gear transmission mechanism fixedly mounted on the base, the worm 4 is an Archimedean cylindrical worm, which passes through the base 2 horizontally and extends out, and the worm wheel 3 is engaged with the worm 4 to form a staggered axis gear pair, and the expansion rod locking mechanism also includes a spring 5 fixedly mounted in the channel at the upper end of the base, an expansion rod base 6, a lock tongue 7, a friction ring 8, an expansion rod rotating shaft 9 and an expansion rod 10.

[0034] like Figure 4 As shown, the expansion rod base 6 is fixed in the base groove by connecting with the spring 5 and can slide slightly relative to the base; the lock tongue 7 passes through the inner channel of the base and extends into the docking box 1 with the expansion rod base. The middle and lower sections of the lock tongue 7 are threaded rods that match the internal threads of the base channel. Its bottom is a hexagonal thin rod inserted into the worm gear. The center of the worm gear has a regular hexagonal hole with a circumscribed circle diameter slightly larger than the circumscribed circle diameter of the hexagonal thin rod at the bottom of the lock tongue, forming a linear motion pair. The rotation of the worm gear system drives the lock tongue 7 to rotate, and the up and down movement is achieved through the thread; the friction ring 8 is outer-circled on the upper end of the lock tongue 7; the expansion rod rotating shaft 9 is mounted on the expansion rod base 6, and its number corresponds to the number of expansion rods 10.

[0035] In one embodiment, the expansion rods 10 include three, which are shrinkable and have a conical surface on the upper part. The conical surface of the expansion rods is slightly larger than the conical surface of the friction ring. In the natural state, the three expansion rods 10 jointly surround the lock tongue 7 and the friction ring 8 and fit tightly. When they are not subject to pressure from the lock tongue 7 and the friction ring 8, they should automatically shrink back to the natural vertical position.

[0036] like Figures 5 to 9As shown, when the expansion rod type building component docking and locking device is docked and locked, the docking box 1 and the base 2 are guided to the correct position through the conical surface, guiding the lock tongue 7 to correctly insert into the channel capture position of the docking box 2. After the locking command is issued, the worm 4 rotates according to the corresponding command, and the worm wheel 3 forming the staggered axis gear pair rotates accordingly, driving the lock tongue 7 to rotate. The threaded rod in the middle section of the lock tongue 7 and the internal thread of the channel of the base 2 rotates, and the lock tongue 7 moves downward, and the friction ring 8 on it moves downward accordingly, and the friction ring fits tightly. 8 is squeezed with the expansion rod 10, the expansion rod 10 is stretched and rotated outward along the expansion rod shaft 9, and at the same time the expansion rod base 6 is squeezed by the expansion rod 10 to move vertically downward and compress the spring 5, and the lock tongue 7 continues to move downward until the expansion rod 10 expands and is stuck with the upper conical surface of the docking box 1, and at the same time, the conical end of the base is tightly fitted with the conical channel at the lower end of the docking box. After the expansion rod docking device is locked, the tensile load is borne by the expansion rod 10 and the upper conical surface of the docking box, and the compressive load is borne by the squeezing of the conical surface of the docking box and the conical surface of the base, and it can bear loads in both directions.

[0037] like Figures 1 to 4 As shown, the unlocking process of the expansion rod type building component docking locking device is opposite to the locking process. After the unlocking command is issued, the worm 4 rotates in the opposite direction according to the corresponding command, and the worm wheel 3 which forms the staggered axis gear pair with it rotates in the opposite direction, driving the lock tongue 7 to rotate in the opposite direction. The threaded rod in the middle section of the lock tongue and the inner thread of the base channel rotate in the opposite direction, and the lock tongue 7 moves upward, and the friction ring 8 on the outer sleeve moves upward accordingly. The expansion rod 10 which is not squeezed by the friction ring 8 automatically shrinks and rotates inward along the expansion rod rotating shaft 9 and gradually fits with the friction ring 8. At the same time, the expansion rod base 6 is squeezed upward by the spring 5 and resets. Finally, the expansion rod 10 shrinks back to the natural vertical position and fits tightly with the friction ring 8. The expansion rod docking device is manually unlocked and can be reused.

[0038] The docking and locking process of the present invention has a large tolerance and is simple to control. Locking is achieved by expanding the expansion rod. After locking, the force is reliable and can be manually unlocked, which saves time and effort and is easy to install. The two-way load-bearing capacity of the locking device is also greatly improved.

Claims

1. An expansion rod type building component docking and locking device, characterized in that: include: The docking box includes a passage running through the docking box, the passage including a first conical surface at the lower end that is smaller at the top and larger at the bottom, and a second conical surface at the middle that is larger at the top and smaller at the bottom, the first conical surface being connected to the second conical surface; The base has a tapered end at its upper end that can be inserted into the docking box, and the tapered end is adapted to the first tapered surface; a channel for installing a locking tongue is provided inside the base; and a groove is provided in the channel; a locking tongue, disposed in the channel of the base and capable of extending into the docking box; a friction ferrule, which is disposed on the upper end of the lock tongue; a spring mounted in the groove of the base; The expansion rod base is installed in the base groove and located above the spring, and can slide relative to the base; An expansion rod rotating shaft is mounted on the expansion rod base; The expansion rod has a conical surface on its upper portion, surrounds the lock tongue and the friction ring and is rotatable around the expansion rod rotation axis; when the lock tongue moves downward, the expansion rod rotates outward around the expansion rod rotation axis, and the upper conical surface of the expansion rod contacts the second conical surface of the docking box; The top of the lock tongue is conical, and the middle and lower sections are threaded rods, which are matched with the internal threads of the base channel; The conical surface of the friction ring is slightly smaller than the conical surface of the expansion rod. In a natural state, the expansion rod surrounds the lock tongue and the friction ring and fits tightly. When the expansion rod is not subjected to pressure from the lock tongue and the friction ring, it should automatically shrink back to a natural vertical position.

2. The expansion rod type building component docking and locking device according to claim 1, characterized in that: A transmission mechanism is provided in the base, and the transmission mechanism is connected to the lock tongue for driving the lock tongue to move along the channel of the base and extend into the docking box.

3. The expansion rod type building component docking and locking device according to claim 2, characterized in that: The transmission mechanism is a worm gear transmission mechanism, the worm extends out of the base, and the turbine is connected to the lower end of the lock tongue.

4. The expansion rod type building component docking and locking device according to claim 3, characterized in that: The worm gear transmission mechanism is installed in the base through a groove. The worm is an Archimedean cylindrical worm, which passes through the base horizontally and extends out. The worm wheel and the worm are meshed to form a staggered axis gear pair. A regular hexagonal hole is opened in the center of the worm wheel, and the diameter of the circumscribed circle is slightly larger than the diameter of the circumscribed circle of the hexagonal thin rod at the bottom of the lock tongue.

5. The expansion rod type building component docking and locking device according to claim 1, characterized in that: The bottom of the lock tongue is a hexagonal thin rod.

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