44results about How to "Does not increase in length" patented technology

The invention discloses a double clutch type automatic gearbox, which comprises a shell of the gearbox, first and second input shafts, and first and second automatic clutches which selectively transmit the rotation of a motor to the first or second input shaft; two sides of the first and second input shafts are provided with first and second output shafts basically parallel to the first and second input shafts; driving gears arranged on the input shafts are meshed with driven gears capable of rotatably sleeved on the first output shaft and/or the second output shaft; and at least one driving gear in the driving gears arranged on the first input shaft or the second input shaft is simultaneously two driven gears on the first and second output shafts. The driving gears are shared, so the arrangement mode of the gear transmission group is changed into a parallel arrangement mode, the length of the gearbox can be greatly shortened, the gearbox can be provided with eight gears on the premise of maintaining the same dimension as a five- or six-gear gearbox, and the dynamic property, the economical efficiency and the grade of the whole vehicle are obviously improved.

The invention provides a socket and a connector assembly. The connector assembly comprises a plug and the socket. An axis which is extended towards left and right directions of a front end of a socket shell is rotatably assembled with a dust cover. The socket shell is also provided with a spring driving mechanism which provides an elastic force for the dust cover overturning towards a closing position. The spring driving mechanism comprises a straight push spring extended forward and backward and a force transmission component which transmits a force between the straight push spring and the dust cover. The dust cover possesses a closed bearing portion. The force transmission component possesses a closed top pressing portion which pushes the closed bearing portion. The spring driving mechanism of the socket in the invention comprises the straight push spring and the force transmission component which transmits the force between the straight push spring and the dust cover; when the straight push spring is set, a space on a length direction of the socket shell can be used, wherein the length direction is a front and back direction; a height of the socket shell and a length of the socket shell are not increased so that the whole socket structure is compact and a usage condition of an integrated and miniature socket connector can be satisfied.

The invention provides a spatial filtering system. The system comprises a laser input device, a spatial filter and an optical path adjusting device, wherein a small hole for filtering is formed in the spatial filter. The system is characterized in that: the optical path adjusting device comprises a charge coupled device (CCD) arranged on the side face of the spatial filter, and a reflecting mirror which is positioned in the spatial filter and is used for reflecting a profile image of the small hole to the CCD. The spatial filtering system has the advantages that: 1, the CCD cannot increase the length of a main optical path, so the system has small volume; 2, the laser energy loss of the main optical path is low; and 3, the system can observe an image near the small hole in the incident light direction and the emergent light direction simultaneously, is convenient to control, and is favorable for improving laser alignment accuracy.

The invention relates to an error detection method used for a data block. The method comprises the following steps: generating the data block which comprises a first field and at least one second field, the first field having a first multi-bit and the second field having a second multi-bit; selecting a CRC initial value of the second multi-bit according to the first field; taking the CRC initial value as an initial value of a CRC register, then calculating a CRC code of the second multi-bit; adding the CRC code into the second multi-bit, forming a whole second multi-bit, the second multi-bit including the CRC code being used for error detection when the second multi-bit is decoded; and emitting the data block including the first multi-bit and the whole second multi-bit. The invention also relates to the error detection method of the data block receiver. The method comprises the steps of selecting the CRC initial value according to a rule which is the same with a sender and utilizing the CRC initial value to carry out verification to the data block by adopting the first field after the decoding. The invention also relates to error detection equipment used for the data block. Error detection capability of the data block is improved without increasing a data length of the original data block. An error operation caused by incorrectly encoding of partial field can be avoided. In the invention is very suitable for a narrowband communication system with limited bearing capability.

The invention relates to a P2P (Peer-to-Peer) mode based PSRD (Program Support Requirements Document) universal service resource discovery method, comprising the following steps of: carrying out hash operation on targets (names or descriptions of resources and IP addresses of nodes) through hash functions, wherein the result of the hash operation is an m-digit binary identifier ID which is respectively recorded as IDk=Hash (the names or the descriptions of the resources) and IDn=Hash (IP), and the value range of the IDn is [0, 2m-1]; arraying the IDn from 0 to 2m-1 into a circle according to a sequence from large to small so as to form distributed structuring network node rings, wherein each structuring network node ring stores a subsequent node; mapping a given target to a certain peering point of a network, wherein the peering point stores a (IDk, Value) pair, the IDk is a hash value of a resource to be searched, and the Value is the actual storage position of the resource to be searched; when searching the resource, directly inquiring in a local pointer gauge, and directly spanning a plurality of nodes to reach a destination node or a node near the destination node till the resource is found or corresponding error handling is carried out.

The invention relates to a fall prevention device for a torsional impacter, which is used for oil and gas drilling and can prevent the failed internal parts of the torsional impacter from falling to the bottom of a well to cause drilling accidents. The technical scheme is that: a shell is in clearance fit with a transmission shaft; the shell is provided with a shell groove; the transmission shaft is provided with a transmission shaft groove; the radial thickness of a fall prevention block is smaller than the depth of the transmission shaft groove; the fall prevention block is compressed in the transmission shaft groove; when the transmission shaft groove moves to the shell groove to form a cavity, a spring is released and the fall prevention block is pushed to the shell groove and tightly attached to the wall surface of the shell groove; and a threaded pin is arranged in a threaded hole formed on the shell. The grooves are respectively formed at a centering position of the transmission shaft and the shell, so that the length and external diameter of a tool cannot be increased, and the shell has high strength; meanwhile, drilling fluid can be prevented from entering the torsional impacter from the fall prevention device; the spring is compressed and released so as to realize assembly and disassembly; and the fall prevention device has a simple structure and high safety factor and is used for an underground drilling tool.

The invention relates to an idle lock head clutch structure, which comprises a lock head body, a lock cylinder assembly arranged in the lock head body, and a clutch arranged opposite to the lock cylinder assembly, wherein the lock cylinder assembly comprises a lock cylinder, a clutch disc arranged in the lock cylinder and a stop element arranged in the lock cylinder; the clutch is sleeved with the lock cylinder; and the clutch disc is provided with a first clutch wall matched with the stop element and a second clutch wall matched with the clutch. The clutch of the lock cylinder is sleeved with the lock cylinder, and the clutch disc is provided with the first clutch wall and the second clutch wall matched with the stop element and the clutch respectively, so that clutch operation is realized, and in the novel clutch structure, the rear clutch is not driven to rotate by random angle ration of an unauthorized key, and the clutch can be driven to rotate by random angle insertion of an authorized key.

The invention discloses a brewing core of a coffee machine. The brewing core comprises a support, a top head, a brewing device, a water inlet pipe and a ball screw rod pair; the ball screw rod pair isinstalled on the support, the brewing device is provided with a brewing cavity with an opening facing the top head, a powder falling opening is disposed nearby the opening of the brewing device, a movable filter plate is arranged in the brewing cavity, the water inlet pipe is fixed to the brewing device, and the top head is internally provided with a liquid outlet pipeline; and the brewing deviceis fixed on the support, and the top head is fixed on a sliding part of the ball screw rod pair. By adopting the brewing core of the coffee machine, the water leakage on the junction of the water inlet pipe and the brewing device can be effectively avoided.

The invention discloses a directional coupler and a beam splitter thereof. The directional coupler comprises a first phase shifting arm formed by sequentially connecting a first bent waveguide, a first straight waveguide, a second bent waveguide, a second straight waveguide and a third bent waveguide, and a second phase shifting arm formed by sequentially connecting a fourth bent waveguide, a fifth bent waveguide and a sixth bent waveguide, wherein the first bent waveguide and the sixth bent waveguide are in central symmetry, the second bent waveguide and the fifth bent waveguide are in central symmetry, the third bent waveguide and the fourth bent waveguide are in central symmetry, and the first straight waveguide and the second straight waveguide are parallel and equal in length. The first straight waveguide and the second straight waveguide are both perpendicular to the direction from a first coupling waveguide area to a second coupling waveguide area. In the embodiment of the invention, the length of the device can be reduced under the condition of keeping a relatively large bandwidth, and the phase precision is ensured.

The invention discloses a high-order backward wave oscillation suppression structure for a strip beam traveling wave tube, and belongs to the technical field of microwave electronics and terahertz. The structure comprises a shell and rectangular gates arranged on the upper top face and the lower bottom face of an inner cavity of the shell in a staggered mode, the two side faces of the shell are each provided with a column of rectangular coupling waveguides which are the same in size and arranged periodically, and the two columns of rectangular coupling waveguides are staggered by half a slow wave period in the axis direction and are also designed in a staggered mode in the longitudinal direction. And one rectangular coupling waveguide corresponds to one rectangular cavity. By loading the staggered rectangular coupling waveguides on the two sides of the slow-wave structure, suppression and absorption of a high-order mode are synchronously realized on the premise of not influencing and not damaging a working mode.

The invention provides a mobile terminal, which comprises a main board, a liquid crystal display (LCD) body and an LCD controller. The main board is provided with a first surface and a second surface, the second surface is provided with a groove mounting area, the LCD body is mounted on the first surface of the main board, the LCD controller comprises a control part and a bendable connecting part connected with the control part, the control part is held in the groove mounting area of the second surface and connected with the main board, and the connecting part is connected with the LCD body. The groove mounting area is formed on the back side (namely the second surface) of the main board and the control part of the LCD controller can be held in the groove mounting area, so that the length and the thickness of the mobile terminal cannot be increased, and the structural design of the integral mobile can meet the requirement of appearance more easily.

The invention provides a box assembly, an automatic gearbox and an automobile. The box assembly comprises a box body and a box cover; at least two axial grooves are formed in the circumferential direction on the end portion of the box body; a through hole which penetrates through the thickness of the box body is formed between the two axial groove; at least two tooth-shaped projections are formed in the circumferential direction of the box cover edge; a boss which protrudes the box cover surface is arranged between the two tooth-shaped projections; the axial grooves are matched with the tooth-shaped projections; the through hole is matched with the boss. According to the technical scheme, the axial grooves and the tooth-shaped projections are formed due to machining based on original structures of the box body and the box cover and the axial length of the axial grooves and the tooth-shaped projections does not increase, so that 3 to 4 mm space in the axial direction of the box body and the box cover is saved, which is meaningful to shrink of the axial size of small products.

The invention discloses a sewer structure. The sewer structure comprises a sewer main body buried underground and a sewer cover plate arranged at the top of the sewer main body; the top of the side wall of the sewer main body is higher than the ground on two sides of the sewer main body; a rain aqueduct is formed in the sewer cover plate and communicated with the ground on two sides of the sewer main body; the inner bottom surface of the rain aqueduct and the ground on two sides of the sewer main body are positioned on the same plane; and a groove corresponding to the rain aqueduct is formed in the top of the side wall of the sewer main body. The sewer structure is simple in structure and reasonable in design, rain aqueducts are formed in the sewer every certain distance, and the interval between two adjacent rain aqueducts is preferably 20m so that rain in the field can flow smoothly, and field waterlogging cannot be caused due to large-scale application of the sewer, and the problem of re-designing the route planning of sewers can be avoided.