372 results about "Point contact" patented technology

The invention discloses a tooth-shaped structure of a bolt fixing tool. The tooth-shaped structure comprises a drive part, a looping part is concavely arranged inside the drive part; the inner periphery of the looping part is a hollow structure and is approximately a polygonal structure, the intersectional angle between edges of the polygonal structure of the looping part are respectively provided with an escape groove, the escape groove is a recessed arc structure, an opening of the escape groove and an opening of the adjacent escape groove take on a straight edge, the straight edge is a lank line section; a top surface is respectively arranged at the center of the straight edges between two adjacent escape grooves, the top surface is in a planar straight line section structure, the top surface is arranged at the straight edge between the two adjacent escape grooves and is superposed on the straight edge; a first groove and a second groove are respectively recessed between the escape groove and the top surface, the first groove is closer to the escape groove, the second groove is closer to the top surface, the first and the second grooves are arranged in line symmetry with another first and second grooves; based on the intermediate vertical line of the distance between the two side walls of the escape groove with the arc structure, the first and the second grooves are arranged in line symmetry with another first and second grooves by the central vertical line of the distance between the two side walls of the arc structure of the escape grooves. The tooth-shaped structure of a bolt fixation tool can not cause slipping and bruting of the bolt fixing part resulting from the stress concentration of point contact.

The invention discloses a metal forming punching device with a positioning structure and a using method thereof, and relates to the technical field of punching machines, the metal forming punching device comprises a punching machine body placed on the ground, the telescopic end of an oil cylinder at the top of the punching machine body is fixedly connected with an upper die base, and the bottom of the punching machine body is fixedly connected with a lower die base; a supporting frame is slidably connected to the outer side of the lower die base, and positioning structures are arranged on the two sides of the top of the supporting frame. According to the metal forming stamping device with the positioning structure and the using method of the metal forming stamping device, accurate transverse positioning and one-way stepping feeding of a metal material plate are achieved through the double-positioning clamping block, the four-point contact pulley block and the ratchet wheel system, it can be guaranteed that the material plate is kept stable in the stamping process through the synergistic effect of the driving wheel and the movable wheel, deviation is avoided, and the stamping quality is improved. And by controlling the downward moving distance of the rack, the rotation angle of the gear, the number of rotation turns of the first spline shaft and the final step pitch of the material plate driven by the driving wheel to move are adjusted.

The invention relates to an aperture structure, in particular to a high-stability variable aperture structure and photographic equipment, which comprises a fixing assembly, the fixing assembly comprises a fixing seat and a fixing cover, and a rotatable turntable and a plurality of aperture blades are mounted between the fixing seat and the fixing cover. The aperture blades are movably connected between the rotating disc and the fixing assembly through a guide structure, the fixing assembly is provided with a limiting concave part, the rotating disc is provided with a limiting groove, and the aperture-variable adjusting hole a is defined by the aperture blades. The rolling piece is arranged between the fixing assembly and the rotating disc in a point contact mode on the rotating disc, so that the rotating disc reduces rotating friction and improves rotating efficiency through the point-contact rolling piece, the rolling piece supports the rotating position of the rotating disc in a point contact mode, and the zero-clearance matching effect is achieved; the stable opening and closing of the aperture blades benefit from the zero-clearance stable rotation of the turntable, thereby facilitating the improvement of the photographing and imaging effect of a user, and improving the photographing quality.

The invention provides a high-sensitivity double-point contact single-pole microswitch. The high-sensitivity double-point contact single-pole microswitch comprises a base group, the base set is sleeved with a shell, and a mounting cavity is formed between the base set and the shell. An upper contact piece, a lower contact piece and a supporting frame which are connected with the base set are sequentially arranged in the installation cavity. A flat reed assembly and a bow reed are connected to the supporting frame. The shell is provided with a key, and the key is matched with the flat reed assembly to work; the support frame is provided with an inclined trapezoidal groove, and the bow reed is connected with the support frame through the inclined trapezoidal groove; the flat reed assembly comprises a flat reed, one end of the flat reed is provided with a plurality of movable contacts, and the other end of the flat reed is connected with the supporting frame. According to the double-insurance single-pole microswitch, the double-insurance problem of contact of an existing single-pole microswitch is solved, a traditional single-point contact mode of a single movable contact and a contact piece is changed into double-point contact, and a single-insurance single-pole microswitch is improved into a double-insurance single-pole microswitch under the condition that indexes such as the boundary dimension and the action characteristic of the switch are not changed; contact reliability of the switch is greatly improved, and actual requirements are met.

The invention provides a four-point supporting three-point leveling mechanism and a leveling method for a precision measuring table, and belongs to the technical field of precision measuring table leveling. Four-point supporting is achieved through the two piezoelectric ceramic stacking micro-displacement mechanisms and the two air springs, stability is improved, communication of the two air springs is equivalent to single-point supporting, three-point leveling is achieved by controlling the two piezoelectric ceramic stacking micro-displacement mechanisms, and control precision is improved; a piezoelectric ceramic stack is adopted to push a top block, a leveling top ball and a wedge block to realize micro-displacement adjustment, and high-precision control and quick response are completed. The four-point supporting three-point leveling mechanism of the precision measuring table has good dynamic stability, the steady-state error reaches 10-5 degrees, friction lag and assembly stress caused by surface contact are avoided through single-point contact of the leveling top ball and the wedge-shaped block, and precision automatic leveling in the mandrel measuring process can be achieved.

A method of recovering a master calibration state of a coordinate positioning machine has a first member that is moveable relative to a second member, wherein the geometry of the machine is characterised by a set of model parameters. The machine is controlled to make point contact between multiple reference surfaces of a tool mounted on the first member and multiple reference surfaces of an artefact mounted on the second member. The separations between these contacting surfaces that would be expected from the current model parameters are determined, and these separations are recorded as a set of master separations. The contacting step is subsequently performed again in respect of at least some of the contacts for which master separations were recorded. At least one of the model parameters is updated to provide a closer correspondence between the expected separations and the master separations.

A relay includes a first contact portion, a second contact portion, and a driving portion. The first contact part comprises a first movable contact spring, and a first movable contact, a first stress piece and a second stress piece which are arranged on the first movable contact spring. The second contact portion includes a first stationary contact. The driving part is provided with a first driving piece, and the first driving piece is located on the side, opposite to the first static contact, of the first movable contact spring and is configured to push the first stress piece to move so that the first movable contact can make contact with the first static contact and pull the second stress piece to move so that the first movable contact can be separated from the first static contact. The rigidity of the first stress piece is smaller than that of the second stress piece, and in the process that the first driving piece pushes the first stress piece, the first stress piece can deform to provide contact pressure for the first movable contact and the first static contact.

The present disclosure relates to a bending and rotation mechanism that enables control of bending operations accompanied by rotational operations. The mechanism includes a bending and rotation object the can be subjected to bending operations and rotational operations, and a string-like object contacting the bending and rotation object at a first contact point and second contact point of the bending and rotation object. A straight line connecting the first contact point and the second contact point is on a skew line relative to the axis of the bending and rotation object. The bending state and rotation state of the bending and rotation object are controlled on the basis of the length of the string-like object between the first contact point and the second contact point. The present disclosure can be applied, for example, to a bending and rotation mechanism, an information processing device, an electronic apparatus, or an information processing method.

The utility model relates to the technical field of aeronautical instruments, and discloses a dual-redundancy spring piece-contact actuating mechanism which comprises a base, a movable contact assembly, two static contact assemblies and an ejector rob, the movable contact assembly is provided with two first contacts, the number of the static contact assemblies is two, and the ejector rob is provided with two second contacts. Each static contact assembly is provided with a second contact which can be in contact fit with the first contact, and the push rod is used for sensing the change of the sensitive element to drive the first contact to move so as to be in contact with or separated from the second contact. According to the utility model, the movable contact assembly is provided with the two first contacts, the two first contacts are matched with the two second contacts on the static contact assembly, and the push rod is used for sensing the change of the sensitive element to drive the first contacts to move so as to be in contact with or separated from the second contacts, so that when the switch outputs a double-switching-value signal, the double-switching-value signal is output; the on point and the off point of the switch keep a consistent minimum difference value, delay of starting and resetting of the switch is reduced, and it is ensured that two switching value signals are kept consistent when the double-value switch is on or off.

The invention relates to the technical field of electric tool switches, in particular to a redundant contact electric tool switch which comprises a shell, a mounting structure, a control structure, a sealing structure, a driving structure and a triggering structure. The arrangement of the trigger structure realizes double-point contact, the design of the redundant contact system avoids the problem of poor contact caused by abrasion of a single contact, avoids the problem of repeated disassembly of the switch for maintenance, improves the practicability, and meanwhile, the movable and static contacts are not easy to fall off when being in contact, are strong in stability, and are convenient to maintain. The arrangement of the sealing structure ensures the overall sealing performance inside the switch, avoids the problem of poor contact caused by dust entering the switch, avoids the problem that a sealing ring at the joint of the button and the shell is easy to fall off, and the arrangement of the control structure realizes the switching between a switching mode and a rotating speed adjusting mode. The rotating speed of the electric tool is adjusted by pressing the button, and flexibility is high.

The utility model discloses a casting mould quick positioning connecting structure, including upper die and lower die, the die cavity surface clamping of upper die has lower die, still include three order positioning groove, fixed pin mechanism, mould spin hole and stop spin hole, the die cavity surface rectangle distribution of upper die is equipped with three order positioning groove, through setting three order positioning groove at upper die, and lower die place sets up mould spin hole and stop spin hole for assembling fixed pin mechanism, and the fixed pin mechanism of lower die place containing head fixed column, vice fixed platform, main fixed platform can cooperate three order positioning groove and form three point contact surface formula positioning connection, and the positioning butt joint level is increased significantly, can realize the positioning of upper die and lower die fast and accurately, and the composite installation mode of main fixed platform rear tail spin column cooperation inner hexagonal bolt at lower die, both solve the problem of single thread installation instability, and when the positioning part wears, through the convenient spin disassembly operation realizes the quick replacement of positioning structure.

The invention provides a touch action recognition method and device, a storage medium and electronic equipment, and belongs to the technical field of human-computer interaction. The method comprises the following steps: acquiring multi-frame queue data; calculating an effective contact number of the current frame data in the multi-frame queue data, and determining an action type to which the touch action of the current frame belongs based on the effective contact number; if the action type is a point contact type, calculating a corresponding dispersion degree according to the current frame data and the previous frame data, and determining whether the touch action of the current frame is one of a light touch action or a sliding action based on the dispersion degree; if the action type is a beating type or a palm type, calculating the number of continuous frames which are judged to be the same action type in the multi-frame queue data; and determining whether the touch action of the corresponding frame is one of a slow shooting action, a snapshot action, a long press action, a continuous touch action or a single touch action based on the number of the continuous frames. According to the invention, the recognition accuracy of complex gestures can be improved.

The utility model relates to a prism driving device, camera module and electronic equipment, comprising a base and a movable frame which is driven by a first driving assembly to rotate around an incident optical axis relative to the base, the prism driving device also comprises a fixed-point moving part and a plurality of ball groups, each ball group comprises a plurality of balls, the fixed-point moving part and the plurality of ball groups are respectively distributed on a plane vertical to the incident optical axis, the fixed-point moving part is in movable contact with at least any one of the base and the movable frame, and the ball groups are in movable contact with at least any one of the base and the movable frame. The driving device has the advantages that the design of the fixed-point moving part and the multiple ball groups is adopted, the precision and stability of the driving device are remarkably improved through the design of multi-point contact of the ball groups, and vibration and abrasion are reduced. Smooth rotation and high-precision positioning of the prism are ensured, and meanwhile, the modular design of the fixed-point moving part and the ball group facilitates maintenance and replacement.

The application discloses a connector assembly, comprising: a shielding member comprising a plurality of ground exposed parts and a base, the base is located between two rows of signal exposed parts in the front-rear direction, the signal exposed parts are located within the common projection of the ground exposed parts and the ground member in the left-right direction, the first groove of the ground exposed part comprises a first contact wall, a second contact wall and a first shielding wall connecting the first contact wall, the ground holding part of the ground member comprises a first holding part and a second holding part, the first contact wall abuts against the first holding part in the front-rear direction, the second contact wall abuts against the second holding part in the up-down direction, both the contact stability of the ground exposed part and the ground member and the multi-point contact can be ensured, the ground area is increased, the contact position of the first contact wall and the first holding part in the left-right direction is located within the projection of the first shielding wall, and the signal interference generated by the signal emitted by the signal exposed part from the contact position of the first contact wall and the first holding part to other signal exposed parts is reduced.

The utility model relates to the technical field of locks, in particular to a door lock for an inner end door of a high-speed passenger train. Comprising a lock body, a lock cylinder is arranged on the lock body, and a pin shaft is arranged on the lock cylinder; a through groove for containing the lock column is formed in the lock body, a pin groove matched with the pin shaft is formed in one end of the lock column, and the other end of the lock column extends out of the lock body. Two positioning grooves perpendicular to the lock column are further formed in the lock body, ball screws facing the lock column are arranged in the two positioning grooves, two limiting concave rings matched with the ball screws are arranged on the lock column, and the two limiting concave rings are located at the positions where the lock column is matched with the ball screws when the door lock is in the opened state and the closed state respectively and used for fixing the lock column. According to the door lock for the inner end door of the high-speed passenger train, matching of materials is achieved, and the movement direction of the lock column is adjusted by limiting the degree of freedom; the surface contact between the lock column and the lock body is changed into point contact, the fit clearance between the lock column and the lock body is as small as possible, the extension and retraction of the spring bolt are flexible and free, and the phenomena of clamping stagnation and shaking are avoided.

This invention relates to the field of medical devices and discloses an auxiliary tool for closed reduction of humeral fractures, comprising: a fixation body having a reduction channel formed inside, wherein at least two sides of the fixation body are respectively provided with openings communicating with the reduction channel; and a reduction module that can enter the reduction channel from any of the openings, wherein the reduction module can move and be positioned along a direction close to or away from the central axis of the reduction channel, wherein there are multiple reduction modules. This invention inserts multiple reduction modules from different openings to construct a customizable, multi-point contact and support structure within the reduction channel, and does not require manual positioning or additional trauma to the injured limb, thus achieving less trauma, higher stability, and more flexible operation in assisting closed reduction of humeral fractures.

Provided is a ball screw capable of reducing quadrant glitch error and torque resistance. Each of a thread groove of a nut (13) and a thread groove of a screw shaft (12) is formed to be a Gothic arch groove having two flank surfaces (13a1, 13a2) (or 12a1, 12a2). A preload causes the ball (14) to come into two-point contact with a flank surface (13a1) on the load side of the thread groove of the nut (13) and a flank surface (12a1) on the load side of the thread groove of the screw shaft (12). The thread groove of the nut (13) is formed so that the ball (14) does not come into contact with the flank surface (13a2) on the non-load side of the nut (13) even if the ball (14), during forward operation, moves toward biting into the flank surface (13a2) on the non-load side of the nut (13) in a direction perpendicular to the revolution direction. The thread groove of the screw shaft (12) is formed so that the ball (14) does not come into contact with the flank surface (12a2) on the non-load side of the screw shaft (12) even if the ball (14), during reverse operation, moves toward biting into the flank surface (12a2) on the non-load side of the screw shaft (12) in a direction perpendicular to the revolution direction.

The utility model discloses an inlaid ornament and ring, the ring comprises a ring body, the inlaid ornament is arranged on the ring body, the inlaid ornament comprises a main inlaying opening structure and a main diamond inlaid in the main inlaying opening structure, the main inlaying opening structure comprises a main inlaying seat and at least two limiting claws, and the limiting claws are arranged on the main inlaying seat. A cavity is formed in the main inlaying base, supporting parts are arranged on the two sides of the upper portion of the main inlaying base and make point contact with the pavilion portion of the main diamond, a gap is formed between the main diamond and the cavity, and the limiting claw is used for limiting the waist and the crown of the main diamond. A gap is formed between the inner side of the limiting claw and the main diamond, and the supporting part is matched with the limiting claw so that the main diamond can shake around two contact points. The diamond provided by the utility model can slightly shake around the connecting line between the two contact points, so that the main diamond is more shiny, and the dynamic visual effect of the ring is greatly improved.

The invention discloses an efficient demolding mold structure applied to a radiator back plate, and belongs to the technical field of die-casting molds. The mold mainly comprises a fixed mold mechanism and a movable mold mechanism, the fixed mold mechanism is provided with a base, a fixed mold base is installed on the base, a mold core is installed on the fixed mold base, the movable mold mechanism is provided with a movable mold base, the movable mold base is provided with a cavity, an installation groove is formed in the base, and a stripping mechanism is arranged in the installation groove and comprises a stripping plate arranged in the installation groove in a sliding mode. A spring is arranged between the stripper plate and the fixed die holder, a plurality of groups of mounting holes are formed in the stripper plate, stripper rods are inserted into the mounting holes, a plurality of groups of guide holes are formed in the fixed die holder, and the stripper rods are arranged in the guide holes in a penetrating manner. According to the efficient demolding mold structure applied to the radiator back plate, the stripping mechanism with the multiple sets of stripping rods is arranged, so that when the radiator back plate is stripped, multi-point contact can be achieved, the radiator back plate is kept balanced in the stripping process, and a back plate blank is prevented from deforming when being ejected out.

The utility model discloses a tool tray for cleaning parts, which comprises a bottom plate and a first supporting and limiting device arranged on the bottom plate and used for supporting and limiting a first part, the first supporting and limiting device comprises a first support, the bottom end of the first support is fixedly arranged on the bottom plate, and the other end of the first support extends along the axial direction of the first support to form a free end; the first radial limiting part is formed on the peripheral wall of the first support, and when the free end penetrates into the shaft hole of the first part, the first radial limiting part is in linear contact or point contact with the inner wall of the shaft hole of the first part; and the shaft end limiting part is formed on the first bracket, and the shaft end limiting part is suitable for being matched with the axial end face of the first part in a limiting manner. According to the tool tray for cleaning the parts, the parts such as locomotive accessories can be supported, limited and transferred, meanwhile, the supporting and limiting device makes point contact or contact with the parts through the original structural characteristics of the parts, the exposed area of the parts is increased, and therefore the cleaning area of the parts is increased.

The chamfering device comprises a conical grinding wheel, a clamping mechanism and a grinding wheel inclining mechanism, the grinding wheel inclining mechanism is used for clamping the grinding wheel and adjusting the inclined cutting angle of the grinding wheel towards the cylindrical lens, the clamping mechanism is used for clamping the cylindrical lens through the end, and meanwhile through the structural design of a guide base, a spring and the like, the cylindrical lens is clamped through the clamping mechanism. During chamfering, the end can abut against the side face of the grinding wheel; when the to-be-chamfered face is a concave face, the arc-shaped edge of the concave face abuts against the side face of the grinding wheel, the arc-shaped edge is ground at a time through rotation of the grinding wheel, and chamfering is achieved. When the to-be-chamfered face is a convex face or a plane, the arc-shaped edge of the convex face or the straight edge of the plane makes point contact with the side face of the grinding wheel and abuts against the side face of the grinding wheel through the spring, the cylindrical mirror translates from one end to the other end at a constant speed relative to the grinding wheel in the linear direction of the to-be-chamfered edge, and the chamfered edge is continuously ground through the rotation of the grinding wheel and the translation compound motion of the cylindrical mirror. And chamfering is achieved. Through the synergistic effect of the grinding wheel and the clamping mechanism, the precision of the chamfering width and angle of various curved surfaces is achieved, and the problem that the chamfering width and angle are not uniform due to an existing spherical mold is solved.

The present application belongs to the technical field of medical devices, and particularly relates to a TPLO animal special bone plate, which comprises a handle body extending vertically as a whole for connecting a tibia stem, the top end of the handle body is suspended to form an arm body extending transversely as a whole for connecting a bone cut, the plate body of the handle body and the arm body is respectively provided with a protruding unit, when the protruding unit is positioned against the tibia, the plate body of the handle body and the arm body is arranged in the gap between the tibia. The arm body extending transversely as a whole can reliably support the middle and lower part of the bone cut, while reducing the surface area of the bone plate head covering the bone cut, and can also ensure the effective fixation of the bone plate to the bone cut. The protruding unit arranged on the inner side of the bone plate and the tibia form a point contact, which can ensure the reliable positioning of the bone plate and the tibia, and also keep a gap between the bone plate and the tibia for blood delivery and circulation, which is beneficial to the blood circulation of the bone block covered by the bone plate.

The utility model discloses a long shaft part machining and positioning tool, and belongs to the technical field of long shaft part clamping and fixing. The multiple fastening assemblies slide on the base in the long edge direction of the base, each fastening assembly comprises a base plate and two clamping parts which are symmetrical with the center of the base plate as the reference, the two clamping parts in the same fastening assembly are matched with each other to clamp the long shaft from the left side and the right side of the long shaft, and the clamping parts clamp the long shaft from the upper side and the lower side of the long shaft; when the clamping device is used for clamping, four-point contact is formed between the clamping device and a part, clamping stress can be effectively dispersed, and deformation of a long shaft is avoided.

The invention discloses a thermomechanical analyzer, and relates to the technical field of thermomechanical analys.The thermomechanical analyzer comprises a base, a lifting assembly, a first testing mechanism, a second testing mechanism, a clamping mechanism and a furnace body, the lifting assembly is installed on the back face of the base, the first testing mechanism is installed at the top of the lifting assembly, and the second testing mechanism is used for annular shooting of a sample; the clamping mechanism is installed at the bottom of the first testing mechanism, and the furnace body is installed in the middle of the base. The arrangement mode that the first testing mechanism, the second testing mechanism and the clamping mechanism are matched is utilized, so that the clamping mechanism can conduct point contact of different degrees according to the shapes of different samples, and the influence of the clamp on the temperature of the samples can be reduced; the sample can be subjected to mechanical pressurization testing and thermal expansion shooting comparison by the first testing mechanism and the second testing mechanism, so that the material performance of the sample can be conveniently and accurately tested, and the furnace body can conveniently perform thermal method testing on the samples with different shapes.

A hinged ladder for ascending to and descending from a cockpit of an aircraft and method of using the ladder for access to and egress from the cockpit. The ladder is suspended from an anchor which supports the combined weight of the ladder and a user. The ladder comprises a plurality of rung plates connected by hinges. The rung plates have respective holes to accept the foot of a user. In use, the ladder is suspended from an anchor in use, and extends longitudinally. The ladder has a standoff to provide single point contact against a fuselage of the aircraft, preventing damage during use. The standoff may articulate outwardly from a rung plate about an X axis. The standoff may be braced by paired struts which articulate about respective Y axes, preventing collapse of the standoff. Each strut may be locked in position by a respective latch which articulates about a respective Z axis.

The invention discloses a machining tool for a high-speed-level turning support of an intelligent fan, and relates to the technical field of turning support machining tools.The tool comprises a base plate and a suspended supporting mechanism, and the suspended supporting mechanism is composed of a bottom point location supporting structure and an end clamping structure; the bottom point location supporting structure comprises two first supporting seats and a second supporting seat, and supporting studs abutting against the bottom face of the support body are arranged at the top ends of the first supporting seats and the top ends of the second supporting seats. Through the arrangement of the bottom point position supporting structure, a stable bottom supporting reference can be provided for the bracket main body by virtue of the geometric stability of a triangle by virtue of triangular distribution formed by the supporting seat II and the two supporting seats I on the top surface of the base plate; meanwhile, the supporting studs at the top ends of the first supporting seat and the second supporting seat directly abut against the bottom face of the support body, point location type supporting of the support body is achieved through three-point contact, and the whole support body is erected above the base plate to be in a suspended state.

The utility model discloses an optical fiber fixing device for a sterile environment, which comprises a fixing seat and a threading pipe, one end of the threading pipe is inserted into the fixing seat, a clamping sleeve is arranged between the inner wall of the fixing seat and the outer wall of the threading pipe, a locking sleeve is arranged on the fixing seat, a locking flange is arranged on the inner wall of the locking sleeve, the locking flange abuts against one end of the clamping sleeve, and the other end of the clamping sleeve abuts against the other end of the threading pipe. And a sealing piece is arranged between the inner wall of the locking sleeve and the outer wall of the threading pipe. The locking sleeve is connected with the fixing seat and tightly presses the clamping sleeve through the locking flange on the inner wall, the clamping sleeve deforms after being stressed to expand a gap between the fixing seat and the threading pipe, so that the threading pipe is fixed, the clamping sleeve and the threading pipe are in surface contact, and compared with an existing point contact structure of a set screw, the clamping sleeve has the advantages of being simple in structure and convenient to use. The threading pipe can be prevented from swinging after being stressed, the reliability is good, and the problem of sanitary dead angles at the countersunk threaded hole is solved; and the sealing element is used for sealing a gap between the inner wall of the locking sleeve and the outer wall of the threading pipe to prevent dust and other foreign matters from entering the interior.

The application relates to a screen quick dismounting device and belongs to the technical field of terminal product screen quick dismounting. A rotating cutting part is adopted, static vertical extrusion of traditional blades is replaced by cutting, local stress is dispersed by centrifugal force, stress concentration caused by single-point contact is avoided, the risk of blade collapse or screen hidden cracking is reduced, the L-shaped support part is hinged with a screen dismounting assembly, the L-shaped support part is driven to rotate around the hinge point, the rotating cutting part can automatically adjust the cutting angle according to the screen curvature, the cutting demand of screens with different curvatures can be adapted, the problem of uneven layering caused by non-orthogonal force application is avoided, the depth and speed of the rotating cutting part cutting into the screen are controlled by adjusting the lifting of the support plate through the connecting rod lifting part, stable transmission of the driving part is combined, the unstable advancing speed caused by resistance fluctuation is reduced, continuous and stable cutting action is realized, the dismounting efficiency is improved, and the problems of tool damage, low efficiency and screen damage caused by rigid contact of traditional devices are solved.

This utility model provides a stable support device for a high-angle running platform of a treadmill, comprising: a frame on which a running platform is mounted, thereby forming a treadmill; characterized in that: a stable support device is provided at the bottom rear side of the running platform, comprising: two longitudinal rods, each more than 15cm in length, connected in the middle by a transverse shaft, the two ends of the transverse shaft extending beyond the outer surfaces of the two longitudinal rods; two bearing seats, shaped like inverted U-shapes, fitted onto the two ends of the transverse shaft, the top surface of the bearing seats being higher than the two longitudinal rods, and having at least two engagement holes on the top surface, which are locked to the bottom of the running platform by two screws, thereby allowing the rear side of the running platform to pivot around the transverse shaft; and at least four feet, respectively installed on the bottom edge of the ends of the two longitudinal rods, forming a four-point contact with the ground. Accordingly, this utility model provides a stable grip on the ground with four points of contact, resulting in a stable and level surface, reducing frame wobbling and noise, and improving safety during exercise.

The application discloses a battery clamp, which comprises a mounting frame, a plurality of layer plates, a guide rail and two push plates, the layer plates are movably arranged on the mounting frame along a first direction, the guide rail is arranged on the mounting frame and extends along the first direction, and the two push plates are arranged in parallel along the first direction and are arranged between the layer plates. The application can avoid the problem of rapid wear caused by point contact in the related art, can make the guide rail and the push plate have a better guiding cooperation effect, and is thus beneficial to preventing parallelism deviation between the push plates.