[0018] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
[0019] As shown in the figure, the simple self-locking device of the present invention includes a lock pin 2 installed on the fixed carrier 1 and a lock body 4 rotatably installed on the movable carrier 3. For the rotation installation of the lock body, the movable carrier A rotating shaft is installed on the upper rotation, and then the lock body is rotated and installed on the rotating shaft to realize the rotation and installation of the lock body on the movable carrier. In this embodiment, the lock body 4 is eccentrically rotatably mounted on the movable carrier 3, and the center of gravity is set up. When the lock body is in a natural state, the upper middle part of the lock body forms a semi-elliptical shape, and the semi-elliptical bottom is formed into an inclined shape. The bottom of the arc.
[0020] The lock body 4 is provided with a lock groove 5 open at both ends. The lock groove 5 includes a locking section 5.1 for locking the locking pin 2 and a leading section 5.2 for guiding the locking pin 2 to slide out of the locking section 5.1. In this embodiment, when the lock body is in a natural state, the lock slot 5 is opened horizontally.
[0021] The entrance of the locking section 5.1 is provided with a first upper barrier wall 6 that can limit the lock body 4 on the lock pin 2 to prevent the lock body from continuing to descend. The first upper barrier wall may be a straight wall or slightly The arc-shaped wall only needs to limit the lock body on the lock pin. The locking portion of the locking section 5.1 is provided with a lower blocking wall 7 that prevents the lock pin 2 from entering the lead-out section 5.2. Similarly, the lower blocking wall 7 may be a straight wall or a slightly curved wall, as long as it can block the lock pin. The entrance of the lead-out section 5.2 is provided with a second upper retaining wall 8 that limits the lock body 4 on the lock pin 2 to prevent the lock body 4 from continuing to descend. Similarly, the second upper retaining wall 8 can be straight or slightly tapered. The arc-shaped wall only needs to limit the lock body on the lock pin. The lead-out section 5.2 is provided with a lower guide wall 9 that guides the lock pin 2 to slide out of the lock body 4. When the second upper blocking wall 8 is in contact with the lock pin 2, the lock pin 2 is located directly above the lower guide wall 9, and is also guided downward The wall can be a straight wall or a slightly curved wall, which can smoothly guide the lock pin to slide out. Of course, when the second upper retaining wall 8 is in positional contact with the lock pin 2 and the lock pin 2 is located directly above the lower guide wall 9, it can be understood that the cross-sectional center of the lock pin 2 is directly above the lower guide wall 9, ie image 3 As shown in the figure, the starting end of the lower guide wall 9 (that is, the right end in the figure) should be located to the right of the center of the cross section of the lock pin, that is to say, the starting end should exceed the center of the cross section of the lock pin.
[0022] In addition, the bottom of the lock body 4 is also provided with a bottom guide wall 4.1 that can guide the lock pin 2 to slide relative to the lock body 4 so that the lock pin 2 gradually approaches the entrance of the locking section 5.1 and contacts the first upper blocking wall 6 in a limiting position. The bottom guide wall 4.1 is an arc-shaped wall in this embodiment, and the surface is round and smooth, which is convenient for the sliding of the lock pin.
[0023] As an improvement of this embodiment, the locking portion of the locking section 5.1 is also provided with an upper stop 10 that prevents the lock pin 2 from exiting, so that the lock pin will not easily exit the locking portion when the force is high.
[0024] In this embodiment, the entire locking section is slightly arc-shaped, so that the lock pin can be firmly locked in the locking section, and the lower guide wall 9 of the lead-out section gradually slopes downward to gradually increase the opening of the entire lead-out section, which is convenient The lock pin slides out of the lead-out section smoothly.
[0025] The simple self-locking device of the present invention can be used in a variety of occasions that need to be locked, such as on a cabinet. At this time, a movable plate is installed on the back of the cabinet, and the movable plate becomes a movable carrier to install the lock of the simple self-locking device. A fixed plate is installed on the wall. The fixed plate becomes a fixed carrier to install the lock pin of the simple self-locking device. The sliding groove slide rail between the movable plate and the fixed plate can make the movable plate follow the fixed plate. Move relatively up and down, and install a gas spring between the movable plate and the fixed plate, which can support the movable plate and return the movable plate to its original position. Pull down the cabinet for the first time. After a certain distance, the lock body touches the lock. The lock pin slides along the lower guide wall relative to the lock body. When sliding to the entrance of the locking section, the lock body is restricted on the lock pin due to the arrangement of the first upper blocking wall, and the lock body cannot continue to descend. At this time, loosen the cabinet body, the cabinet body has a tendency to rise under the action of the gas spring, and the lock body is affected by gravity. At this time, the lock body starts to swing back while rising, and the lock pin enters the locking section. Due to the lower retaining wall, the lock pin is locked in the locking section. At this time, the lock body is also locked by the lock pin, and the cabinet body remains stationary. Compared with the original cabinet body height, the cabinet body height is lowered at this time, and the height can be increased. Dwarves place items, reference figure 2. After the items are placed, pull the cabinet a second time. At this time, the lock pin comes out of the lock section, and the lock pin that comes out of the lock section is in contact with the second upper retaining wall. At this time, the lock body is also restricted by the lock pin. Stay and stay still, see image 3. At this time, loosen the cabinet again, and also under the action of the gas spring, the lock pin contacts the lower guide wall during the ascent of the lock body, and the lock pin slides out of the lock body along the lower guide wall. After the lock pin slides out of the lock body, The lock body returns to its original position under the action of gravity. After the simple self-locking device is used on this type of cabinet, the cabinet can satisfy users of different heights.
[0026] Of course, the simple self-locking device of the present invention can also be used in other occasions where the height needs to be temporarily changed or temporarily locked while being able to return to the original position. The simple self-locking device of the present invention has very few parts, ingenious structure design, low cost, and more importantly, no spring is needed, which can avoid the situation that the entire simple self-locking device loses its function due to spring failure.
[0027] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments. All technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.
