59results about How to "Auto lock" patented technology

A luminous element drive circuit and a method thereof are disclosed. One end of the luminous element is coupled to a power voltage and the cathode of a diode by an inductor, and the other end thereof is coupled to the anode of the diode. The luminous element drive circuit comprises a switch, a current sensing circuit and a switch control circuit. The current sensing circuit is coupled to the anode of the diode by the switch and used for deciding whether to generate closing control signals according to the breakover current value of the switch. The switch control circuit is used for controlling the breakover and closing of the switch and can close the switch according to the closing control signals. In addition, the switch control circuit is also used for comparing the breakover current value of the switch with a reference current value, so as to generate comparison result to dynamically adjust the time length for closing the switch.

The invention relates to an intelligent central control system of an electric vehicle. The system comprises a central processing platform and a terminal information receiving controller. The central processing platform comprises a master control single-chip microcomputer, a human-computer interaction interface, a controller feedback unit, a battery feedback unit, a burglar alarm feedback unit and a steering gear feedback unit. The human-computer interaction interface is arranged in the middle of a handlebar of a vehicle head and displays data processed by the master control single-chip microcomputer so that the working state of the electric vehicle can be monitored in real time. The central processing platform and the terminal information receiving controller are in two-way communication wirelessly. Due to the fact that the system is provided with the central processing platform and various feedback units, the state of the electric vehicle can be detected, and the electric vehicle can be controlled. Besides, because the system is further provided with the terminal information receiving controller, corresponding response is made after a signal is received. When the terminal receiving controller goes beyond a set communication distance from a central control platform, the electric vehicle is automatically locked.

The invention relates to a multifunctional self-adaptive maintenance platform and an operation method thereof. The multifunctional self-adaptive maintenance platform comprises a lifting frame, whereinthe lifting frame is of a square frame type structure; upper guide wheel assemblies are mounted on the two sides of the upper part of the lifting frame respectively; lower guide wheel assemblies aremounted on the two sides of the middle part of the lifting frame respectively; hoisting machines are mounted on the two sides of the lower part of the lifting frame respectively; a centrifugal safetylock is mounted on the lifting frame above each hoisting machine; the front side of the lifting frame is connected with a working hanging basket through a swinging arm and a screw rod mechanism; a balancing weight is mounted on the rear side of the bottom of the lifting frame through a balancing weight bracket; the working hanging basket does lifting motion along with the lifting frame; and the working hanging basket does transverse telescopic motion relative to the lifting frame through the rotation of the swinging arm. The multifunctional self-adaptive maintenance platform has the advantagesof being compact and reasonable in structural design and convenient to operate, the working range of the hanging basket is expanded and the movement direction of the hanging basket is expanded, and the positioning precision and the working efficiency are improved.

The invention discloses an opening-closing door of processing equipment for a valve cover of an electromagnetic valve. The opening-closing door of the processing equipment for the valve cover of the electromagnetic valve comprises two observation windows arranged on the opening-closing door; upper flanges, lower flanges and side flanges which inwards extend are arranged on the opening-closing door; the opening-closing door further comprises a door locking device; the door locking device comprises a door opening sliding chute formed in one door of the opening-closing door; a spring fixing cover is arranged on the opening-closing door and covers the door opening sliding chute; a first guide seat is arranged on the lower end faces of the upper flanges and are located above the spring fixing cover; the upper end of a first guide post sequentially penetrates through the first guide seat and the upper flanges; the lower end of the first guide post penetrates through the spring fixing cover; and a switch fixing seat is fixedly arranged on the first guide post located in the spring fixing cover. By means of the mode, the opening-closing door disclosed by the invention is simple in structure and simple and convenient to operate; the door can be opened by only sliding a switch; and during locking, the door resets by use of a spring, and can be automatically locked.

The invention discloses an arm strength exercise protection mechanism assembly, and the assembly comprises a base and a frame fixed to the rear end of the base; by arranging an arm strength device clamping block with a lifting function, the purpose that an arm strength device can be clamped to adapt to fitness crowds at different heights is achieved, and the purpose of widening the range of the adaptive crowds is achieved. The counting mechanism capable of counting pressing after the arm strength device is bent and reset is arranged at the upper end of the clamping block, so that counting can be completed only after the exercise action reaches the standard, and the purposes of exercising and improving the exercise action standard and conveniently counting are achieved; the hand-held block capable of sensing the state of the hand-held arm strength device is arranged in the clamping block, so that the arm strength device can be used for bending exercise only when the hand holds the arm strength device, and the arm strength device can be automatically locked to prevent injury when the hand-held block is loosened and slipped.

The invention mainly discloses a suitcase with self-locking function, which includes a box body, a pull rod and a moving mechanism. The moving mechanism includes a mounting plate, a wheel frame, a cardan shaft, a wheel shaft and a pulley. The upper end of the wheel frame is provided with a shock absorber. The wheel frame is connected to the mounting plate through the cardan shaft, and the pulley is connected to the wheel frame through the wheel shaft. The first locking piece and the second locking piece are arranged on the wheel shaft, and the first locking piece and the second locking piece are respectively located on the On the left and right sides of the pulley, the first locking piece and the second locking piece are both composed of a sleeve and a locking block. An electromagnet is arranged on the sleeve of the first locking piece, and an electromagnet is arranged on the sleeve of the second locking piece. Features metal blocks. The invention has the advantages of simple structure, convenient assembly and disassembly, and can automatically lock the pulley to prevent the rolling of the pulley, thereby further fixing the suitcase and making the use more convenient.

The invention discloses a simulated live-action sand table for urban and rural planning management construction, and the sand table comprises a table body, the upper surface of the table body is provided with a mounting groove, the mounting groove is internally provided with a disc body, and the lower surface of the table body is fixedly provided with four supporting legs; the inclination assembly is used for adjusting the inclination angle of the disc body, the inclination assembly comprises a threaded rod and a sliding block, the threaded rod is sleeved with the sliding block in a threaded mode, an installation plate is fixedly installed between the two supporting legs, the threaded rod is vertically and rotationally installed on the installation plate, and the back face of the disc body is rotationally connected with the sliding block; and the limiting component is used for limiting rotation of the disc body. When the tray body needs to be obliquely displayed, a worker can quickly control the sliding block to move in the vertical direction through the inclination assembly, so that the tray body can be quickly adjusted to incline, the inclination angle of the tray body can be automatically controlled, and the practicability of the device is improved.

The invention relates to the technical field of computers, in particular to an integrated multifunctional computer network transmitter structure which comprises a mounting bottom plate frame, an arc-shaped mounting frame, a transmitter body, a mounting cover plate and the like. An arc-shaped mounting frame is connected to the top of the mounting bottom plate frame through bolts, a conveyor body is fixedly connected to the inner side of the arc-shaped mounting frame and located at the top of the mounting bottom plate frame, and a mounting cover plate is fixedly connected to the upper portion of the arc-shaped mounting frame. Through the cooperation of the slotted sliding frame and the devices on the slotted sliding frame, an operator only needs to insert a plug into the jack on the transmitter body and then loosen the plug, and the slotted sliding frame drives the plug to reciprocate so as to realize the reciprocating plugging action of the plug. Therefore, oxides possibly existing in the socket on the transmitter body due to long-term non-use can be removed, and the condition of poor contact after a plug is plugged is avoided.

The invention discloses intelligent display screen equipment which comprises a clamping frame and a display screen arranged in the clamping frame. A clamping assembly is arranged in the left side endsurface of the clamping frame; an installing frame is fixedly arranged on the left side of the top end surface of the clamping frame; a first sliding hole is formed in the left side end surface of theinstalling frame; a first sliding frame is arranged in the first sliding hole in a sliding fit way; a second sliding hole is formed in the inner top wall of the first sliding hole; a second sliding frame with the bottom end surface being fixedly connected with the top end surface of the first sliding frame is arranged in the second sliding hole in a sliding fit way; a first screw rod is arrangedin the second sliding frame in a threaded fit way; the extending tail end of the left side of the first screw rod is connected with the left side inner wall of the second sliding hole in a running fitway; and a first electronic roller is connected to the extending tail end of the right side of the first screw rod in a power fit way.

A multifunctional portable child dining chair is characterized by comprising a child seat assembly (1), an upper seat assembly (2), an upper chair leg lock assembly (3), a lower seat assembly (4) anda lower chair leg lock assembly (5). When the dining chair is unfolded, the requirements of children of different ages on the dining chair can be met by adjusting the position of a dinner plate (1-4),the upper seat assembly (2) and the lower seat assembly (4) are compact in structure, safe, stable and capable of saving space, the upper chair leg lock assembly (3) and the lower chair leg lock assembly (5) can automatically lock a chair leg assembly (2-2), and safe and relieved dining experience is provided for children. After the dining chair is folded, the structure is small and neat, carrying is convenient, and traveling is easier and more pleasant. When the child dining chair is disassembled, the child dining chair can be disassembled into three individuals, adult users and children canuse the child dining chair simultaneously, and the utilization rate of the child dining chair is increased. The multifunctional portable child dining chair is easy to operate, reliable to use, safe,stable, convenient to carry, elegant, attractive and high in applicability.

The invention provides an upright locking mechanism. The upright locking mechanism comprises a movable upright and a base which are connected via a rotating shaft, wherein a rotary latch hook, a knob shifting fork and a reset shifting fork are connected to the base; a reset spring is arranged on each of the knob shifting fork and the reset shifting fork; branching support legs are formed at one end of the rotary latch hook and the two branching support legs are respectively clamped into the knob shifting fork and the reset shifting fork; a latch hook head and a latch hook support leg which are divergent are formed at the other end of the rotary latch hook; a lock hole corresponding to the latch hook head is formed in the movable upright; the movable upright oppresses the latch hook support leg to drive the rotary latch hook to rotate when rotating; the latch hook head is clamped into the lock hole.