80results about How to "Prevent mutual rotation" patented technology

An adaptive crash structure of a vehicle body or chassis of a motor vehicle includes a first metal casting and a second metal casting. A deformation element in the form of a metal casting for absorbing energy interconnects and forms with the first and second metal castings a single piece construction through a casting process. The deformation element is comprised of a plurality of funnel-shaped wedge bodies which are disposed in succession, with neighboring wedge bodies being connected through intervention of a predetermined breaking web. Each wedge body is defined by a diameter, wherein the diameters of the wedge bodies are sized to allow the wedge bodies to move telescopically into one another when a limit stress is reached and the predetermined breaking webs rupture so as to effect a tight intergrip of the telescoping wedge bodies in a self-locking manner.

An adaptive crash structure of a vehicle body or chassis of a motor vehicle includes a first metal casting and a second metal casting. A deformation element in the form of a metal casting for absorbing energy interconnects and forms with the first and second metal castings a single piece construction through a casting process. The deformation element is comprised of a plurality of funnel-shaped wedge bodies which are disposed in succession, with neighboring wedge bodies being connected through intervention of a predetermined breaking web. Each wedge body is defined by a diameter, wherein the diameters of the wedge bodies are sized to allow the wedge bodies to move telescopically into one another when a limit stress is reached and the predetermined breaking webs rupture so as to effect a tight intergrip of the telescoping wedge bodies in a self-locking manner.

A height-adjustable implant is designed to be inserted between vertebral bodies and includes a first and a second sleeve part. The second sleeve part carries an external thread and is inserted with a longitudinal section thereof in the first sleeve part in a rotationally fixed and axially movable manner. On its longitudinal section projecting from the first sleeve part, the second sleeve part is encompassed by a nut that engages with the external thread. The nut carries a toothed ring. The invention also relates to a tool for handling the implant.

A robotic link mechanism comprising a pair of base elements connected by a passive flexible joint, such that flexure of the joint changes the mutual orientation of the base elements. A pair of obliquely truncated cylinders are confined between the base elements such that the obliquely formed end surfaces of the cylinders can rotate in sliding contact with each other, and the other end of each cylinder can rotate in sliding contact with its associated base element. Driving motors are attached to the base elements, each one controlled to rotate the cylinder associated with that base element, such that rotation of at least one of the cylinders causes the base elements to undergo change in their mutual orientation. The mechanism thus has a backbone composed of the passive flexible joint, which is supported and actuated by the oblique truncated cylindrical structure that serves as an active exoskeleton.

A personal digital assistant having a double spindle hinge capable of openably and rotatably unfolding two casings foldably and rotatably joined to each other and holding the attitude of the unfolded casings. The personal digital assistant comprises the first casing, the second casing, and the double spindle hinge connecting the first and second casings to each other so as to be opened and closed and rotated relative to each other. The double spindle hinge further comprises an open / close shaft part installed in the first casing, a housing held on the open / close shaft part in the state of rotatable about an axis in the axial direction of the open / close shaft part, and a rotating shaft part connecting the housing to the second casing rotatably relative to each other about an axis in the vertical direction to the axial direction of the open / close shaft part. The rotating shaft part further comprises a first engagement part at the side end part of the housing, the open / close shaft part comprises a second engagement part engageable with the first engagement part, and the first engagement part and the second engagement part (A) are disengaged from each other when the first casing and the second casing are opened to a specified angle so that the first casing and the second casing can be rotated relative to each other and (B) are engaged with each other when the open / close angle of the first casing and the second casing is not the specified angle so that the first casing and the second casing cannot be rotated relative to each other. Also, the first engagement part and the second engagement part are formed so that, in the state of (A) above, the combination of the cross section of the first engagement part with the cross section of the second engagement part can form a roughly circular shape.

The invention discloses gear double-sided deburring equipment which comprises a machine frame. The equipment is characterized in that a gear rotating device, a gear pressing device, a gear lower surface deburring device and a gear upper surface deburring device are arranged on the machine frame, the gear rotating device comprises a lower mounting frame, a transmission shaft, a gear positioning seat and a first motor, the gear pressing device comprises an upper mounting frame, a gear pressure head and a pressing cylinder, the gear lower surface deburring device comprises a first X-axis adjusting mechanism, a first Z-axis adjusting mechanism, a lower grinding wheel driving mechanism and a lower grinding wheel, and the gear upper surface deburring device comprises a second X-axis adjusting mechanism, a second Z-axis adjusting mechanism, an upper grinding wheel driving mechanism and an upper grinding wheel. By means of the double-sided deburring equipment, deburring processing can be carries out on the two faces of a gear simultaneously, the production efficiency can be greatly provided, the size precision of the gear can be improved, and the subsequent assembly precision of the gear can be guaranteed.

A coupling device for coupling together a tool holder (3) with a rotatable spindle (2) of a machining machine. The coupling de-vice comprises: - a female-shaped coupling part (10) with an internally cone-shaped section (11) and a male-shaped coupling part (20) with an externally cone-shaped section (21); - an annular groove (25) arranged in the externally cone-shaped section; - locking balls (15), which are radially displaceable in radial holes (16) in the internally cone-shaped section; and - a locking sleeve (30), which is arranged on the outside of the female-shaped coupling part and which is rotatable between a releasing position, in which the locking balls can be displaced radially to a retracted position while allowing a mutual axial displacement between the coupling parts, and a locking position, in which the locking balls are kept in engagement in said groove while preventing a mutual axial displacement between the coupling parts. The locking sleeve is provided with radially springing guide members (31), which co-operates with a respective locking ball.

A assembly comprises: a first member, a second member and an anti-rotation device. The first member is provided with a bore and a groove on a surface of the bore. At least a portion of the second member is disposed within the bore in the first member and a recess is provided on a generally axially facing surface of the portion of the second member. The anti-rotation device comprises an arcuate resilient body comprising a radially inner portion and a radially outer portion, the radially outer portion being received within the groove, the radially inner portion abutting a surface of the portion of the second member. A first anti-rotation feature is provided on the radially outer portion for cooperation with a complimentary feature of the first member. A second anti-rotation feature is provided on the radially inner portion, extending away from the radially inner portion of the body in a generally axial direction and is received within the recess on the second member.

The invention provides a coaxial type shifting fork structure. The coaxial type shifting fork structure comprises a mechanism base, a first shifting fork, a second shifting fork and a gear shifting execution mechanism. The first shifting fork and the second shifting fork are installed on the mechanism base through shifting fork shafts. The gear shifting execution mechanism comprises two shifting blocks, the shifting fork shafts comprise the first shifting fork shaft and the second shifting fork shaft, and the first shifting fork shaft and the second shifting fork shaft are coaxially installed in the mechanism base. The first shifting fork and the second shifting fork are installed on the first shifting fork shaft and the second shifting fork shaft correspondingly. The two shifting blocks are matched with the first shifting fork and the second shifting fork correspondingly. The coaxial type shifting fork structure is high in smoothness and simple in structure.

The invention relates to a railway wagon bogie and side frame cross bar mechanism connection method. The railway wagon bogie and side frame cross bar mechanism connection method is characterized in that the relative motion between two side frames within the horizontal plane is eliminated by a five-bar mechanism, so that a stable structure is achieved. The five-bar mechanism comprises three connecting bars and two bars formed by the two side frames, the two side frames are connected with both ends of the three connecting bars, so that the five-bar mechanism is formed in the horizontal plane, and the relative motion between the two side frames within the horizontal plane is eliminated by the five-bar mechanism assembly. Since the railway wagon bogie and side frame cross bar mechanism connection method adopts the five-bar mechanism side frame control principle and the five-bar mechanism side frame control mechanism on the basis of a conventional three-major part type bogie, the defects of poor performance stability and structural stability existing in currently used four-cross bar connection bogies are overcome, the structural fatigue reliability of vehicles and the critical speed of vehicle running are increased effectively, the dynamic acting force between wheels and rails is decreased, and thereby the purpose of increasing the running speed and running quality of wagons and reducing operation and maintenance costs is achieved.

The invention discloses an expansion bolt with a clamping block. The expansion bolt comprises a bolt body (1) and an outer sleeve (2), wherein an axial sliding groove (11) is formed in the large end side of the bolt body (1), a matched sliding block (21) is arranged on the inner side wall of the outer sleeve (2), and the sliding block (21) is clamped into the sliding groove (11) and is slidably connected with the sliding groove (11). According to the expansion bolt, the sliding groove (11) is formed in the outer wall of the bolt body (1), the matched sliding block (21) is arranged on the outersleeve (2), the sliding block (21) is clamped into the sliding groove (11), therefore, when nuts on the bolt body (1) are screwed, due to the fact that the sliding block (21) is clamped in the sliding groove (11) all the time, the mutual rotation of the bolt body (1) and the outer sleeve (2) can be effectively prevented, and the nuts can be conveniently tightened.

A swivel comprises a first body component and a second body component with an interconnection assembly for interconnecting the first and second body components and to allow mutual rotation of the first and second components about a swivel axis. The swivel further includes a rotation limiting arrangement which, in a release condition, allows free mutual rotation of the first and second body components and in a first or a second locking condition restricts mutual rotation of the first and second body components. A user control is operable to selectively cause the rotation limiting arrangement to adopt one of a locking condition and the release condition. In the first locking condition, the rotation limiting arrangement prevents mutual rotation of the first and the second body components and in the second locking condition, the rotation limiting arrangement, allows limited mutual rotation of the first and second body components by less than 360°.

The invention relates to the technical field of automobile gauges, and discloses a quick switching module device for an automobile gauge tool, which comprises a heightening seat, a dismounting modulemounting seat and a dismounting seat arranged on a bottom plate. The dismounting module mounting seat comprises a lower base and an upper base, an anti-rotating pin is arranged between the lower baseand the upper base, the lower base comprises a lower base body and a rotating sleeve in rotating fit with the lower base, a driving part used for driving the rotating sleeve to rotate is arranged on the rotating sleeve, and a lock pin is arranged in the rotating sleeve; the upper base comprises an upper base body and a positioning column mounted on the upper base body, and a locking groove in sliding fit with the lock pin is formed in the positioning column. According to the quick switching module device for the automobile gauge tool, a lock pin positioning and locking mode is adopted, each switching module does not need to be screwed up independently, operation time is saved, tool installation efficiency is improved, repeatability and reproducibility are improved, and structural stabilityis also improved.

The invention provides a sealing structure. A wavy spring (2) is mounted at the bottom of a sealing groove of a piston rod (1). Two sealing rings (3) are mounted outside the wavy spring (2). Each sealing ring (3) is provided with a cut. The sealing structure has the advantages that the wavy spring at the bottom of the sealing groove of the piston rod provides pretightening force for the two fluoroplastic sealing rings to enable the sealing rings to fit an inner hole of a matched part, so that a sealing function is achieved; by the structure, frictional force generated during axial reciprocating of the piston rod can be reduced effectively.

A coupling device for coupling together a tool holder (3) with a rotatable spindle (2) of a machining machine. The coupling device comprises: —a female-shaped coupling part (10) with an internally cone-shaped section (11) and a male-shaped coupling part (20) with an externally cone-shaped section (21); —an annular groove (25) arranged in the externally cone-shaped section; —locking balls (15), which are radially displaceable in radial holes (16) in the internally cone-shaped section; and —a locking sleeve (30), which is arranged on the outside of the female-shaped coupling part and which is rotatable between a releasing position, in which the locking balls can be displaced radially to a retracted position while allowing a mutual axial displacement between the coupling parts, and a locking position, in which the locking balls are kept in engagement in said groove while preventing a mutual axial displacement between the coupling parts. The locking sleeve is provided with radially springing guide members (31), which co-operates with a respective locking ball.

A hose reel includes a frame, a reel rotatably arranged within the frame and a rewind mechanism with a spring. A removable lid is attached to the frame and encloses an inside of the hose reel from all directions to prevent a user of the hose reel from accessing the inside of the hose reel. An axle is rotatable in relation to the reel. A first end of the spring is attached to the reel and a second end of the spring is attached to the axle. The axle has an outer end connected to the lid to prevent mutual rotation between the lid and the outer end in a direction which decreases the spring force of the spring.

An attachment system is provided for attaching an external component to a chassis of a vehicle, such as components for performing snow clearance, road measurements, road surface marking assemblies, transport of vehicles or gear, including salvaging work and transport of heavy duty vehicles. The attachment system includes at least an elongated chassis coupler element, a fastening mechanism for fastening the chassis coupler element to the chassis when in a mounted position, a distance element, and a clamping mechanism. The coupler element is shaped to fit inside a hollow space of the distance element, and the clamping mechanism is operable to control an insertion length of the coupler element into the hollow space thereby controlling the clamping of the distance element and the chassis when the attachment device is in a mounted position.