33results about How to "Play the role of self-locking" patented technology

The invention provides a lifting stand column with a small installation distance. The lifting stand column comprises a driving device, a lifting pipe and a transmission assembly. The lifting pipe comprises a first pipe, a second pipe, a third pipe, a fourth pipe and a fifth pipe. The lower end of the fifth pipe is fixed to the driving device. The transmission assembly comprises a first screw rod,a second screw rod, a third screw rod and a fourth screw rod. The output end of the driving device is in transmission fit with the first screw rod and can drive the first screw rod to rotate. The lower end of the second screw rod is provided with a first nut in threaded transmission connection with the first screw rod. The lower end of the third screw rod is provided with a second nut in threadedtransmission connection with the second screw rod. The lower end of the fourth screw rod is provided with a third nut in threaded transmission connection with the third screw rod. The lower end of thefirst pipe is provided with a fourth nut in threaded transmission connection with the fourth screw rod. The adjacent screw rods are in threaded transmission connection, in addition, each nut is located between the corresponding two adjacent screw rods, the transmission assembly can be more compact in the axial direction and the radial direction, and the small installation distance and the large stroke of the lifting stand column are achieved.

The invention discloses a multiple anti-theft bluetooth office lock, which comprises a motor fixed on a table, a control circuit for driving the motor to run, and a drive block fixed on a drawer, the opposite sides of the drive block are respectively fixedly connected with connecting rods , one end of the connecting rod is fixed to the drive block, the other end is fixed to the inner wall of the drawer, a threaded hole is provided in the middle of the drive block, a screw is coaxially fixed on the rotating shaft of the motor, and the screw passes through the screw thread The hole is set to match the internal thread of the threaded hole, and the drawer is driven to move back and forth along the length direction of the screw rod when the motor rotates. The multiple anti-theft bluetooth office lock of the present invention can effectively lock and open the drawer through the setting of the control circuit, motor, drive block, screw rod and threaded hole, avoiding the problem that can be achieved by destroying the lock cylinder in the prior art. And the problem of prying open the drawer.

The invention relates to a near-ultraviolet source adjustment mechanism for a solar simulator, which includes an adapter ring, a body, a condenser lens, an adjustment cylinder, an inner focusing cylinder, an insulating sleeve and a lamp holder, and the adapter ring is sleeved on one side of the body. The condenser is fixedly connected to the adapter ring, the adjusting cylinder is connected to the other side of the body by rotation, the inner focusing cylinder is plugged into the body, the insulating sleeve is plugged into the focusing inner cylinder, and the lamp holder is plugged into the insulating sleeve, among which , there are four adjusting screws threaded on the insulating sleeve, the axis directions of the adjacent adjusting screws are vertical to each other and one end is in contact with the lamp holder, the other end of the adjusting screw passes through the focusing inner barrel and extends out of the body; the focusing inner There are several guide columns fixedly connected to the outer wall of the cylinder, and several guide grooves are opened on the adjustment cylinder. The guide columns pass through the body and extend into the guide grooves, so that the guide columns and the adjustment cylinder are slidably connected. The advantages of adjusting the position of the xenon lamp axis, horizontal direction, and vertical direction are unchanged.