41results about How to "Limit rotation" patented technology

A hinge is provided for an orthopedic brace having a first rotation plate, a second rotation plate, a pivotal connector connecting the first and second rotation plates, a rotation limiting mechanism, and a rotation locking mechanism. The rotation limiting mechanism includes a rotation limiting face formed in the peripheral edge of the second rotation plate and a rotation limiting assembly selectively positionable in a fixed position relative to the first rotation plate. The rotation limiting assembly has a stop face engageable with the rotation limiting face upon rotation of the first and second rotation plates, which limits further rotation in a first rotation direction. The rotation locking mechanism includes a rotation lock pin and a series of lock notches formed in the peripheral edge of the second rotation plate. The rotation lock pin is selectively positionable within one of the series of lock notches, which substantially locks the first and second rotation plates against rotation in the first rotation direction or in a second rotation direction opposite the first.

A developer supply container detachably mountable to an image forming apparatus, the developer supply container includes a main body for accommodating a developer; a discharge opening, provided in the main body, for permitting discharge of the developer; a shutter member for opening and closing the discharge opening; a rotatable member which is rotatable relative to the main body to effect opening and closing movement of the shutter member; a regulating member for limiting a rotation of the rotatable member in a direction of opening the shutter member, wherein the regulating member includes an extended portion integral with the rotatable member and extended substantially along the opening rotational direction of the rotatable member and a limiting projection, projected from the extended portion toward the main assembly, for abutment to a stopper projection of the main body, wherein the regulating member has an abutting portion for abutment to an image forming apparatus in a mounting operation of the developer supply container, and the limiting projection displaces to a position where it is incapable of abutting the stopper projection.

An apparatus for controlling removal of a component from a chassis may include an engaging member and a control member. The engaging member may engage a portion of the chassis when the component is withdrawn to a predetermined position in the chassis to inhibit removal of the component from the chassis. The control member may be operated to disengage the component from the chassis such that the user can remove the component from the chassis. The control member may be a handle that disengages the engaging member from the chassis when the handle is deployed.

An improved cleat assembly is disclosed, the assembly containing one or more spring clips configured for releasably securing the assembly to a bicycle pedal or the like. Specifically, the cleat assembly is configured such that an improper over-tightening of the cleat onto the sole of a user's shoe has substantially no effect on the free flexing of the spring clip while it is engaging or disengaging to / from the pedal. In addition, the cleat assembly incorporates one or more soft elastomeric caps that frictionally engage the ground when the user walks about, to provide improved traction and to eliminate undesired wear of critical assembly components. Further, for embodiments of cleat assemblies of the kind incorporating one or more adjustable set screws for adjusting the assemblies' float angles, threaded apertures for the set screws are formed by the confronting surfaces of a plastic upper plate and a metallic bottom plate, wherein the threads are formed only in the plastic upper plate. This allows the upper plate to be conveniently formed of an injection-molded plastic material and the bottom plate to be conveniently stamped from a piece of sheet metal. In a preferred embodiment of the invention, one or more holes are formed in the confronting surfaces of the metallic bottom plate, allowing the one or more set screws to contact the elastomeric material of the cap or caps, inhibiting the one or more set screws from working their way loose from the cleat assembly. In another embodiment of the invention, the upper plate and bottom plate are configured to stay secured together both prior to the initial installation of the cleat assembly and also in the event that the user detaches the cleat assembly from the shoe.

An LED lighting tube having a first segment, a second segment, and a rotating connector between the segments. Each segment has an elongated cylindrical housing, an aperture in the sidewall of the cylindrical housing, a reflector centered within the aperture, a circuit board within the cylindrical housing, and a rotatable electrical coupling connected to an outer end of the cylindrical housing. The circuit board has an LED that aligns with the aperture. The rotatable electrical coupling has a limiter insert that provides a rotative stop, a collet that at least partially surrounds the limiter insert and is rotatable about the limiter insert, and an interface connector secured to the limiter insert and in electrical communication with the circuit board. The rotatable electrical coupling permits the LED lighting tube to connect to a light fixture while also permitting the cylindrical housing to rotate relative to the light fixture. The rotation of the collet about the limiter insert is limited by the rotative stop.

An instrument for inserting a spinal implant into an intervertebral space is disclosed. The instrument includes an elongated body having inner and outer shafts configured to longitudinally translate with respect to each other, a holding tip which is configured to articulate with respect to the elongated body in response to the longitudinal translation of the inner and outer shafts, and a driveshaft assembly configured to cooperate with the articulation of the holding tip and secure a spinal implant to the instrument. A spinal implant and a system for inserting a spinal implant into an intervertebral space including an insertion instrument and a spinal implant are also disclosed.

The invention relates to a child safety seat with synchronously adjusted headrest and side wings, which comprises a seat part, a backrest part, side wings and a headrest. The side wings and the headrest are connected with a sliding mechanism, the sliding mechanism is slidably connected with the backrest part, and the sliding mechanism and the backrest part are provided with locking and unlocking mechanisms which are matched with each other. According to the child safety seat capable of synchronously adjusting the headrest and the side wings, the heights of the side wings and the headrest can be synchronously adjusted by pulling the handle to unlock, the handle is loosened, the heights of the headrest and the side wings are fixed at any gear height, operation is easy and fast, and user requirements are met.

The present invention relates to ear gear (100; 200), such as headphones, headset, ear protection or similar, having a pair of earpieces (102, 103; 203), being attached generally to a respective end region (106, 107; 206, 207) of an interconnecting headband (108; 208). Each earpiece is adjustably associated with the headband, for adjustment of the position of the earpieces relative to the headband. The ear gear further comprises at least two extending legs (106A, 106B, 107A, 107B; 206A, 206B, 207A, 207B) provided at the end region (106, 107; 206, 207) at the headband, and arm members (110, 11 1; 211) that at one end (110A, 111A; 211A) are attached to a respective earpiece. Further, the ear gear comprises an end cap (110E, 111E; 211E) provided at the respective headband end region (106, 107; 206, 207). At least one of the extended legs is rotatably arranged to each end cap (110E, 111E; 211E), such that the end cap can rotate relative to the at least one leg (106A, 106B, 107A, 107B; 206A, 206B, 207A, 207B).

The invention relates to a building structure joint, in particular to a reinforced concrete column beam anti-shock joint. The joint comprises frame columns, the frame columns extend outward to form brackets, the two ends of a frame beam between the frame columns extend outward to form protruding parts matched with the brackets, limiting holes are formed in the protruding parts, and the limiting holes are matched with limiting tables on the brackets. According to the reinforced concrete column beam anti-shock joint, the frame columns and the frame beam are connected in a split mode, during earthquakes, the frame beam and the beam columns rotate relative to each other along an inner circular bead and an outer circular bead under cooperation of the limiting holes and the limiting columns to form a plastic hinge at the beam end, the frame columns can be effectively protected, and collapse and failure of a structure are prevented.

The invention relates to an architectural structure node and in particular to an anti-seismic node of a reinforced concrete column beam. The anti-seismic node of the reinforced concrete column beam comprises a frame column. The frame column is outwards extended to form a bracket. Two ends of a frame beam between the frame columns are outwards extended to form a bulge part matched with the bracket. The upper surface of the bracket and the lower surface of the bulge part are provided with mutually matched grooves. Each groove is pre-embedded with an outer gear matched with an inner gear sheathed and fixed on a rotation shaft. The rotation shaft is fixed between the grooves through a fixing ring pre-embedded in the bracket. The split-type connection is formed between the frame column and the frame beam, so the beam end forms the plastic hinge structure in the earthquake, the node structure can be effectively protected, and the structure failure is prevented.

The invention discloses a self-excited vibration generation device for a soil rotary tillage blade. The self-excited vibration generation device comprises a rotating shaft, a bearing seat, a torsion beam and a stretching strip, wherein one end of the rotating shaft extends into the bearing seat, the torsion beam is fixedly mounted at one end, extending into the bearing seat, of the rotating shaft, one end of the stretching strip is mounted at one end of the torsion beam, and the other end of the stretching strip is mounted on the bearing seat; the rotating shaft can automatically rotate in the bearing seat. The invention provides a self-excited vibration generation method for the soil rotary tillage blade. According to the method, DOF (degree of freedom) of the blade rotating relative to a central axis of the rotating shaft is released, rigidity in the DOF direction is provided, and under the condition that the blade is stressed non-uniformly in a working process, self-excited vibration of the blade is realized. According to the invention, self-excited vibration of the blade in three DOF directions including rotation around the central axis of the rotating shaft, movement in the axial direction of the rotating shaft and rotation in a hinge pin direction can be produced in the working process, self-excited vibration frequency can be adjusted by adjusting the rigidity in the corresponding DOF direction so as to adapt to different soil, and tillage resistance is small. The invention belongs to the technical field of agricultural soil cultivation.

A trailer backup assist system for a vehicle towing a trailer includes a sensor sensing a hitch angle between the vehicle and the trailer, a steer-by-wire steering handwheel configured to receive a user input trailer path, a controller controlling the vehicle to reverse the trailer along a controlled path based on the sensed hitch angle and the user input, and a feedback actuator coupled to the steering handwheel to provide feedback torque to the steering handwheel in a trailer backup assist mode to limit rotation of the steering handwheel for the user input.

A bumper structure for the front and rear area of a motor vehicle includes a bumper cross member, and a crash box placed between the cross member and an end of a side rail. At least two bolted connections, extending in upright direction of the motor vehicle and disposed in parallel relationship, are provided for detachably securing the cross member to the crash box, wherein one of the bolted connections extends through a bore to define a pivot axis of the cross member whereas the other one of the bolted connections is arranged in an oblong hole to allow a limited rotation of the cross member about the pivot axis. In this way, damage to the crash box that is distal to the impact site is prevented.

The invention provides a confluence mechanism. The confluence mechanism is used for connecting tracks, and the tracks comprises a first branch track, a second branch track and a confluence track, wherein the outlet end of the first branch track is connected with the inlet end of the confluence track, the second branch track is disconnected with the confluence track, the first branch track, the second branch track and the confluence track are provided with roller hanger protruding tracks, and the roller hanger protruding track on the first branch track and the roller hanger protruding track on the confluence track are connected end to end to form a continuous protruding track; and a confluence mechanism comprises a fixing seat and a swing head, the fixing seat is arranged at the outlet end of the second branch track, one end of the swing head is rotatably arranged on the fixing seat, and the other end of the swing head can rotate to the position above the continuous protruding track. According to the confluence mechanism, the rotatable swing head is arranged at the outlet end of the second branch track, the confluence between the swing head and the first branch track can be realized, the structure is simple, and the maintenance is easy.

The invention discloses a rock-core drill holder which comprises a base, a left-side rotating shaft, a right-side rotating shaft, a left arm and a right arm. Each of the left-side rotating shaft and the right-side rotating shaft is mounted on the base through a pair of bearings, and one ends of the left arm and the right arm are mounted on the left-side rotating shaft and the right-side rotating shaft respectively while the other ends of the same are hinged to a clamping tile used for clamping a drilling rod; the left-side rotating shaft or the right-side rotating shaft is driven to rotate through a hydraulic oil cylinder, and a connecting rod used for enabling the left-side rotating shaft and the right-side rotating shaft to synchronously and rotate in different directions is arranged between the left-side rotating shaft and the right-side rotating shaft. According to the rock-core drill holder, the clamping tile is reliable in clamping, so that safety in use of the rock-core drill holder is guaranteed.

The invention provides a handle assembly, a distributor, a detergent box assembly and clothes treatment equipment. The handle assembly comprises a handle body and a decorating part, wherein the handlebody is provided with a clasp groove penetrating through the appearance face of the handle body; the decorating part is arranged in the clasp groove and is connected with the handle body through a movable connection structure, and the size of the decorating part is adaptive to the size of the clasp groove, and is used for sealing the clasp groove under the natural state and flush with the appearance face. The handle assembly, the distributor, the detergent box assembly and the clothes treatment equipment have the advantages that the decorating part is added in the clasp groove of the handle body, since the size of the decorating part is adaptive to the size of the clasp groove, the decorating part can seal the clasp groove under the natural state, thereby avoiding the situation that the dirt is hidden in the clasp groove, improving the cleanliness of the product, not only ensuring the integrity of the appearance face of the handle body, but also ensuring the smoothness of the appearance face of the handle body, and playing a good decorative role. In addition, the decorating part is movably connected with the handle body to trigger the decorating part, so that the clasp groove is exposed for a user to push and pull the handle assembly, thereby achieving the normal operation of the distributor.

A utility device includes a base tapered at an edge and a clip. The clip includes a hook, and when in a closed position, the hook fits into a recess of the clip and is unable to receive an object. However, in an opened position, the hook is pivoted away from the clip and is able to receive an object. An abutment prevents the hook from opening further than the opened position. The clip further includes a channel with overhangs and retainers that prevent an attached corresponding rotatable attachment piece from detaching from the channel. The corresponding rotatable attachment piece may attach to the channel and rotate within the channel. However, a first and second set of stoppers limit the rotation of the corresponding rotatable attachment piece within the channel. Further, the utility device may include a slot offset from the base to receive a corresponding fixed attachment piece.

A high-voltage vacuum circuit breaker driving device disclosed by the present invention comprises a bottom plate, the front part of the upper end of the bottom plate is provided with a vertically through opening, the front end of the bottom plate is fixedly provided with a mounting plate, the mounting plate is of an L-shaped structure, and the inclined surface of the upper end of the mounting plate is fixedly provided with three wire inlet ends. An A-phase leading-out terminal, a B-phase leading-out terminal and a C-phase leading-out terminal are sequentially and fixedly installed on the rear portion of the upper end of the bottom plate from left to right, and current transformers are fixedly installed on the front portions of the outer surfaces of the A-phase leading-out terminal and the C-phase leading-out terminal. According to the high-voltage vacuum circuit breaker driving device, the driving mechanism and the execution mechanism are arranged to cooperate with each other to realize automatic opening and closing of the isolation knife, so that the opening and closing efficiency and the personal safety of operators are improved; and a first limiting groove, a first limiting rod, a fan-shaped limiting groove and a second limiting rod are arranged to cooperate with one another to limit the rotation angle of the movable rod, so that the situations of excessive switching-on, improper switching-off and the like are effectively avoided.

The invention provides a platform adaptive airflow dust-proof water glass for classroom teaching teachers. The water glass comprises a direction adaptive adjustment mechanism and a adaptive dust-proofwater cup body, the surface of the adaptive dust-proof water glass body is in circular shape; a first arc-shaped handle is fixedly connected with the side surface of the adaptive dust-proof water glass body; a center placing butt groove is arranged on the lower surface of the adaptive dust-proof water glass body, and the inner wall of the center placing butt groove is in circular shape. The invention relates to the field of teaching. The platform adaptive airflow dust-proof water glass for classroom teaching teachers is provided with an arc-shaped dust-proof airflow cover and the surface of the arc-shaped dust-proof airflow cover is in arc shape so that chalk dusts are not easy to precipitate on the surface of the arc-shaped dust-proof airflow cover when the chalk dusts drift to the waterglass, moreover, the arc has certain guiding effects on the dusts and the wind, so that dusts fall around the cambered surface, thereby the water glass can effectively solve the problem that the general dust-proof water glass is inconvenient to be used in the field of teaching activities as the chalk dusts frequently fall into the water glass, which influences the normal drinking of the teacher.

The invention discloses an energy-saving LED lamp convenient to adjust. The energy-saving LED lamp comprises an LED table lamp adjusting machine, and the LED table lamp adjusting machine comprises a base, a lantern support, a lantern support angle positioning body, a lamp holder angle positioning body and a lamp holder. The rear end of the lantern support is rotationally mounted at the upper endof the base; the lantern support angle positioning body is mounted on the outer wall of the lamp holder in a sliding manner; the lower end of the front part of the lamp holder angle positioning body is fixedly connected to the outer wall of the front part of the lantern support ; the lamp holder is rotationally mounted at the front end of the lantern support; the base comprises an elastic strip, asupporting frame and a pedestal. The lower end of the elastic strip is fixedly connected to the lower end of the inner wall of the supporting frame, the side wall of the elastic strip does not make contact with the inner wall of the supporting frame, the lower end of the supporting frame is fixedly connected to the upper end of the pedestal, the lantern support comprises a first rotating shaft, an adjusting rod and a rotating shaft sleeve, and the first rotating shaft is symmetrically and fixedly connected to the rear end side wall of the adjusting rod. The height and orientation of the tablelamp are convenient to adjust, and the use requirement is better met.

A fastener for holding tubes, fluid lines and the like is provided with a barb for deforming material on the surface of tubular fluid line held in the fastener, and a hollow adjacent the barb for receiving the deformed material.

The invention discloses a riveting pressure tool. The riveting pressure tool comprises an upper die, a first pressure block, a lower die, a fixing plate and a guide positioning part, the lower die isprovided with a first fixing shaft, and the upper die is matched with the lower die and drives the lower die to move downwards; the guide positioning part penetrates through the fixing plate and is connected with the lower die, the riveting pressure tool further comprises a tension spring fixing shaft and a first tension spring, and the first pressure block is provided with a first tension springhole; the tension spring fixing shaft is connected with the lower die, one end of the first tension spring is connected with the tension spring fixing shaft, and the other end of the first tension spring is connected with the first tension spring hole in the first pressure block; the bottom of the first pressure block is in contact with the fixing plate, and the first pressure block is rotatably connected to the lower die through the first fixing shaft. The riveting pressure tool can be automatically reset after riveting pressure is completed, the safety level and processing efficiency are improved, and the operation difficulty is lowered so that a common operator can also be qualified for riveting pressure work.

The invention provides a vehicle chassis and a vehicle. The vehicle chassis comprises four wheels, a frame, four variable-angle transmission devices, four suspension systems, two differential systems and two steering systems. The frame, the four variable-angle transmission devices, the four suspension systems, the two differential systems and the two steering systems all enable the four wheels to steer towards one side by at least 90 degrees at the same time. Through the layout design of each component device and system in the vehicle chassis, the four wheels can steer towards one side at least 90 degrees at the same time, the situation that each component device and system in the chassis hinder the steering of the wheels is avoided, and the situation that the rotation amplitude of the wheels is limited due to the fact that the wheels are blocked by each component device and system in the chassis is prevented, and the functions of transverse running, four-wheel steering, in-situ rotation and the like of the vehicle are achieved.

A system for guiding a cutting tool in an osteotomy procedure includes a cutting block. The cutting block includes an aperture extending through a thickness of the cutting block and having a length and a width. The width of the aperture is defined between a first interior surface of the cutting block and a second interior surface of the cutting block opposing the first interior surface. The system further includes a sleeve. The sleeve includes a slot configured for receiving a sawblade and configured for insertion into the aperture of the cutting block such that the sleeve contacts either the first interior surface or the second interior surface without contacting the other interior surface.

The invention discloses a slag scraper device with a ratchet tooth-ratchet wheel locking and unlocking mechanism. The slag scraper device comprises the ratchet tooth-ratchet wheel locking and unlocking mechanism and a movable trolley. The ratchet tooth-ratchet wheel locking and unlocking mechanism is mounted on the movable trolley. The movable trolley is slidably mounted on a guide rail and connected with a driving part. The ratchet tooth-ratchet wheel locking and unlocking mechanism comprises a vertical rod, a ratchet wheel, a ratchet tooth, an adjustable limiting screw, a return spring and amovable adjusting rod. A slag scraper is fixedly mounted at the front end of the movable adjusting rod. The movable adjusting rod is hinged to the lower portion of the vertical rod. The ratchet wheelis fixedly mounted at the hinge joint of the movable adjusting rod. The ratchet tooth matched with the ratchet wheel is rotationally mounted on the vertical rod. The adjustable limiting screw is mounted on the part, between the movable adjusting rod and the ratchet tooth, of the vertical rod. The top end of the limiting screw is used for limiting the rotation position of the ratchet wheel so thatthe lowermost position of the movable adjusting rod and the slag scraper can be limited. The return spring is mounted between the ratchet tooth and the vertical rod and provides power for return of the ratchet tooth.

The invention provides electric wire lifting equipment for electric power construction, and relates to the technical field of electric power construction auxiliary devices. The electric wire lifting equipment comprises a bracket, sliding wheels are arranged at the bottom of the bracket, a vertical rod is arranged in the middle of the top of the bracket, a tooth groove is formed in the middle of the front end of the vertical rod, a main insertion rod is fixedly connected to the top end face of the vertical rod, a through hole is formed in the side face of the main insertion rod, the main insertion rod is inserted into bottom grooves of additional mounting rods and fixed through cooperation of a bolt and the through hole in the side face of the main insertion rod, and the tooth groove is formed in the middles of the front ends of the additional mounting rods. According to the to-be-lifted height, the additional mounting rods are additionally assembled, an auxiliary insertion rod of one additional mounting rod is inserted into the bottom groove in the bottom of the other additional mounting rod, height increasing treatment is carried out on the whole device, if position heightening does not need to be carried out, assembling of the plurality of additional mounting rods does not need to be carried out, and the problem that when an electric wire is transmitted at a specific height, the distance is not enough, and the electric wire cannot be lifted is solved.

The invention provides a soil cutting device based on self-excited vibration, which comprises a rotary blade mounted in a shell, a handle welding block welded at the bottom of the rotary blade is inserted into a waist-shaped hole at one end of a spring mandrel in the shell, and a self-excited spring is mounted on the spring mandrel; when rotary tillage operation is carried out, the cutter handle welding block swings in the kidney-shaped hole, one side of the cutter handle welding block makes contact with the end face of the self-excitation spring, the self-excitation spring can be compressed, and therefore self-excitation vibration is generated; when the self-excited vibration frequency is the same as the inherent frequency of the whole cutting device, the best soil cutting effect is achieved, and the resistance reduction and consumption reduction effects are the best at the moment. Threads are machined at the two ends of the spring mandrel and fastened through the nuts, the horizontal position of the spring mandrel is changed by screwing the nuts, the relative position of the kidney-shaped hole in the spring mandrel and the tool handle welding block can be changed, the rotation amplitude of the rotary blade is limited, and the rotary blade vibration cutting device can adapt to tillage vibration cutting work under different soil properties and different working conditions.