39results about How to "Realize threaded connection" patented technology

The invention relates to an air inlet valve, in particular to a special manual air inlet valve for a device in bearing water storage equipment, and solves the problem of incapability of automatic outlet water upon water supply cut-off of an external water supply system and formation of negative pressure at a high position of a pipeline system existing in the bearing water storage equipment. The special manual air inlet valve for the device in the bearing water storage equipment comprises an air collection pipe, an air collection pipe joint, an air inlet pipe, a seal ring, a push rod, a push button, a compression spring and a valve seat, wherein the lower end of the air collection pipe is provided with an opening; the air collection pipe joint is hermetically connected to the upper end of the air collection pipe; the upper end of the air inlet pipe extends into the inner cavity of the air collection pipe, and is close to the lower end face of the air collection pipe joint; and the lower end of the air inlet pipe extends out of the air collection pipe and is hermetically connected with a middle circular hole of the valve seat. Through the valve, the problem of incapability of automatic outlet water upon water supply cut-off of the external water supply system and formation of negative pressure at the high position of the pipeline system existing in the bearing water storage equipment is effectively solved; and the valve is suitable for various kinds of bearing water storage equipment.

The invention discloses a lumbar vertebral arch internal fixed bolt used for orthopedic surgery of a hospital and an application device of the bolt. A single bolt type percutaneous zygopophysis pedicle bolt internal fixation system comprises a locating sheathing canal and a corresponding inner core, a guide pin for determining the bolt depth, a soft tissue expander for expanding a bolt placement channel of the body surface, a tapping rod piece, a medical hollow drill and a drilling tool for drilling a bone, a bolt installing device and a vertebral pedicle bolt. The vertebral pedicle bolt is divided into a third thread segment, a rough rod segment, and an internal hexagonal heavy platform is arranged on the nut, the bolt installing device is a hollow structure, and is in counterpoint connection with the nut through a connection key at the front end, and the connection key is a boss matched with the internal hexagonal heavy platform. The invention overcomes the default of complex operation step in the prior art, and provides the single bolt type percutaneous zygopophysis pedicle bolt internal fixation system having low improvement cost.

The invention discloses a thread processing method for aluminum oxide ceramics, and belongs to the technical field of aluminum oxide ceramics. The thread processing method is characterized by comprising the following steps: performing isostatic pressure pressing on dried aluminum oxide powder, thereby obtaining an aluminum oxide blank to be processed; processing threads on a screw rod, thereby obtaining a blank with threads; continuously sintering the threaded blank for 36-58 hours from the room temperature to 1600 DEG C by using a constant gradient sectional sintering process, and cooling to be the room temperature according to a cooling curve after the sintering is completed, thereby obtaining the threads, wherein the continuous temperature rising process takes 34-52 hours in the continuous sintering process. The shrinkage rate of a sintered line can be controlled to be of a certain value according to demands, so that a threaded product of the aluminum oxide ceramic is uniform in specification and sufficient in precision after being sintered.

The element (1) has a hollow cylindrical metal insert (3) which is fixed and enclosed in a plastic structure (4a,4b) having contact surface in for bearing against the fiber-plastic composite component (2,2a,2b) one plane vertically to the force application direction. The metal insert has undercuts (7,8) which are oriented in opposite directions. The plastic structure is double-cone-shape in the plane of force transmission direction. The base surface of double cone and contact surfaces of the plastic structure are made of bulk molding compound (BMC).

The invention discloses a light-emitting nail block toy, which includes a main control block, several surface blocks and several light-emitting nails, a control module is arranged inside the main control block, and a control module of the main control block is The outer surface is provided with at least one first splicing interface; the inside of the surface block is provided with an LED driver module, and the inner surface of the surface block is provided with a second splicing interface corresponding to the first splicing interface, at least one The surface block can be spliced ​​on the main control block through the splicing interface, and the control module is connected to the LED driver module through the splicing interface. The outer surface of the surface block is provided with several nail holes. Three sets of first electrodes are arranged on the sidewall of the nail hole. The invention has the advantages of promoting children's cognitive construction and hands-on ability, promoting children's autonomous game ability, improving children's sense of color, interest, creativity and cognitive ability, and the like.

The invention discloses a production process of a high-performance novel nut, comprising the following steps: ① preparing an outer shell and an inlay, the outer shell and the inlay are made of different materials; a through hole is formed in the outer shell; ②The inlay is fixedly installed in the through hole of the outer shell to form a semi-finished nut; ③The inner inlay is formed into a screw hole for matching with the screw; the outer shell is machined to form a finished nut. Compared with the prior art, the present invention adopts the method of embedding an inlay in the outer casing, so that the transmission nut can fully utilize the performance of the material, and the quality and cost of the transmission nut are balanced. The tight connection between the inlay and the outer shell is realized through the spinning process, so that the inlay and the outer shell are integrally fixed, the processing technology is simple, and the cost is low, which further improves the competitiveness of the nut product.

The invention discloses a connecting device for an indoor machine. The connecting device for the indoor machine and the outdoor machine comprises a first connector, a second connector which is in threaded connection with the first connector and an auxiliary screwing piece which is in slide connection with the exterior of the first connector; a rolling column accommodating groove with gradually changed depth is formed in the periphery of the first connector or the internal circumference of the auxiliary screwing piece along the circumferential direction; a rolling column is arranged inside the rolling column accommodating groove in a rolling mode to enable the first connector and the auxiliary screwing piece to be linked along a screwing direction of the first connector and the auxiliary screwing piece. According to the connecting device for the indoor machine and the outdoor machine, the auxiliary screwing piece can only act on the first connector along one direction to achieve connection between the indoor machine and the outdoor machine, the auxiliary screwing piece cannot apply acting force to the first connector during contrarotation, reliable connection between the first connector and the second connector is guaranteed, leakage of heat transferring mediums is avoided due to the auxiliary screwing piece, the wedge groove and the wedge block and installation and maintenance of the indoor machine and the outdoor machine are convenient and installation and maintenance costs of an air conditioner are reduced due to the fact that the connecting device for the indoor machine and the outdoor machine can be arranged indoor. The invention also provides an outdoor machine comprising the connecting device.