38 results about "Tooth segment" patented technology

The invention relates to the technical field of oral liquid bottle cleaning and sterilizing, in particular to an oral liquid filling bottle body cleaning and sterilizing device. Comprising a case, an inner frame is arranged in the case, a motor, an inner gear ring and an outer gear ring are fixedly mounted on the inner frame, an intermittent shaft and a revolution shaft are rotatably mounted on the inner frame, two transmission interruption areas are arranged on the inner frame and correspond to the position between the inner gear ring and the outer gear ring, and a transmission wheel is mounted at the output shaft end of the motor; three fan-shaped tooth sections and three tooth-free arc sections are alternately arranged on the transmission wheel, the central angles of the three fan-shaped tooth sections are gradually increased by 30 degrees in the clockwise direction, and a driven gear meshed and matched with the fan-shaped tooth sections is mounted on the intermittent shaft. The device has the beneficial effects that through precise linkage of the motor, the transmission wheel, the variable-speed shaft, the inner gear ring and the outer gear ring, a stepped dehydration system is constructed, and the problem that stubborn water stains of traditional oral liquid bottle cleaning and sterilizing equipment are difficult to peel off is solved.

This invention relates to an attached milling unit, the housing of which has an attachment bracket for attachment to a movable support arm of a carrier. The housing extends along a longitudinal axis (01). Furthermore, the attached milling unit includes at least one motor (02) and a transmission unit, the axis of rotation (05) of which is perpendicular to the longitudinal axis (01) of the housing. Two cross-cutting heads (06) driven to rotate by the transmission unit are attached to both sides of the longitudinal axis (01) of the housing and carry several milling cutters (07). Each cross-cutting head (06) has a driven output shaft (09) about which it rotates, wherein the two output shafts (09) of the cross-cutting head (06) are arranged at an angle to each other and each forms an acute angle with the longitudinal axis (01) of the housing on the side opposite to the attachment bracket. Each output shaft (09) is attached with a driven gear (10) having helical teeth, wherein each helical tooth directly meshes with the corresponding spur tooth segment of the drive spur gear (04).

Electric drive unit for closing and / or opening a motor vehicle lock, in particular a motor vehicle door lock, with an actuating unit for actuating the motor vehicle lock, comprising at least one actuating element (10), with an electric motor (4) and a downstream gearbox provided for actuating the actuating unit, and wherein the gearbox is designed with at least one drive wheel (6) and at least one driven wheel (7, 8), characterized in that the drive wheel (6) is equipped with different tooth segments (16, 17) which, depending on the angle of rotation (Δ, Δ), engage with the driven wheel (7) or different driven wheels (7, 8) during its rotation.

A robotic pool cleaner is provided. The cleaner includes: a cleaning body, including a water inlet and a water outlet separate from the water inlet; a driving gear, the driving gear being rotatably provided on the cleaning body; a second tooth segment, the second tooth segment being meshed with the driving gear; and a cleaning roller brush mechanism, including a roller brush body and a roller brush gear; where the brush roller gear is connected to the brush roller body and meshed with the second tooth segment, and when rotating, the driving gear drives the second tooth segment to rotate, to drive the brush roller gear and the brush roller body to rotate relative to the cleaning body.

The device serves for adjustment, in particular height adjustment, of a seat section of a vehicle seat by means of a pinion adjustment device. This device comprises a pinion (10) mounted on a pinion shaft (R) and a meshing tooth segment (12) which, in the assembled state, is fixed on a shaft (8) rotatably mounted in a bearing opening (4) of a support component (2) about a pivot axis (D). An eccentric bushing (18) is inserted into the bearing opening (4), and by rotating the eccentric bushing (18), an axial distance (a) between the pivot axis (D) and the pinion shaft (R) can be adjusted. This simplifies assembly and allows a suitable axial distance (a) to be easily set for operation.

The invention relates to a wind turbine (2) comprising a nacelle (8) arranged on top of a tower (12), a rotor comprising a hub (6) and a plurality of blades (4), a main shaft (16) configured to be driven by the rotor about a main axis and supported on the nacelle (8), a generator (28) having a generator rotor and a generator stator, and a gear system (25) arranged to increase the rotational speed between the rotor and the generator rotor. The gear system (25) comprises a stationary ring gear (50), an input member (53) coupled to or driven by the main shaft (16), the input member (53) having a plurality of radially movable tooth segments (52, 63) carried in a guiding slot and engageable at an outer end with the ring gear (50), a central output member (55) within the input member (53), the central output member having an outer eccentric profile acting on and driven by inner ends of the radially movable tooth segments (52, 63), whereby through engagement with the ring gear (50) a rotational movement of the input member (53) drives the radially movable tooth segments (52, 63) and effects a rotation of the central output (55) member.

This invention discloses a high-efficiency and high-precision modeling method for contact analysis of face gear torque transmission structures, belonging to the field of aerospace technology. The method includes: dividing the gear structure and solving to obtain the coordinates of all nodes on the numerical tooth surface of the face gear pair; based on the coordinates of all nodes on the numerical tooth surface, introducing the axial installation error, shaft intersection error, and axis offset error of the face gear, establishing a structural mesh model of the face gear torque transmission system; defining contact pair relationships and boundary conditions on the structural mesh model; and performing convergence calculations on the structural mesh model based on the defined contact pairs and boundary conditions to complete the face gear contact analysis. By constructing a local tooth segment model structure of the meshing region between the face gear and the cylindrical gear in the face gear pair to replace the full tooth model structure for finite element contact analysis, the computational efficiency is improved, effectively avoiding the problem of high workload and low efficiency in contact analysis due to the large number of finite element meshes in the face gear torque transmission system.

An orthodontic aligner includes a posterior segment configured to apply first forces to move a set of posterior teeth of a dental arch of a patient. The orthodontic aligner further includes an anterior segment configured to apply second forces to move a set of anterior teeth of the dental arch. The orthodontic aligner further includes a connector that joins the posterior segment and the anterior segment. The connector is configured to isolate the first forces from the second forces. Isolation of first forces from the second forces enables: a) the first forces to be applied to the set of posterior teeth without substantial interference from the second forces applied to the set of anterior teeth; and b) the second forces to be applied to the set of anterior teeth without substantial interference from the first forces applied to the set of posterior teeth.

An orthodontic appliance and assembly for distal movement of segments in the posterior jawbone region is disclosed. The orthodontic appliance comprises a mesial element having a mesial base surface configured for attachment to a premolar or canine, an arm having a pivot at the distal end of the arm, and a distal element having a distal base surface configured for attachment to a molar. The distal element or distal portion of the arm comprises a distal anchoring structure for connecting a first distal movement force element. The mesial element may have a projection defining a groove for fitting an elastic band, the groove being positioned along a rounded convex surface of the projection having a diameter of at least 3 mm. A method of treatment is also provided.

This invention relates to a method, device, and medium for displaying mechanical information for risk warning during impacted tooth extraction. The method includes: Step S1: Obtaining the three-dimensional modeling results of each tissue unit; Step S2: Obtaining the modeling results of each tooth segment unit; Step S3: Constructing the tooth segment and its contact constraints with surrounding tissues; Step S4: Based on the constructed contact constraints, combined with the overall finite element stiffness matrix and operational load, solving for the displacement response of each finite element mesh; Step S5: Based on the displacement response of each finite element mesh and the shape function, obtaining the displacement matrix of each element, and further obtaining the strain tensor of each element; Step S6: Based on the constitutive matrix of the tissue material corresponding to each element and the strain tensor, obtaining the stress tensor of each element; Step S7: Comparing the stress tensor of each element with its pre-configured threshold and assigning color values ​​to the finite element mesh of each element. Compared with the prior art, this invention has the advantages of real-time performance and high accuracy.

This invention discloses a high-efficiency and high-precision modeling method for contact analysis of face gear torque transmission structures, belonging to the field of aerospace technology. The method includes: dividing the gear structure and solving to obtain the coordinates of all nodes on the numerical tooth surface of the face gear pair; based on the coordinates of all nodes on the numerical tooth surface, introducing the axial installation error, shaft intersection error, and axis offset error of the face gear, establishing a structural mesh model of the face gear torque transmission system; defining contact pair relationships and boundary conditions on the structural mesh model; and performing convergence calculations on the structural mesh model based on the defined contact pairs and boundary conditions to complete the face gear contact analysis. By constructing a local tooth segment model structure of the meshing region between the face gear and the cylindrical gear in the face gear pair to replace the full tooth model structure for finite element contact analysis, the computational efficiency is improved, effectively avoiding the problem of high workload and low efficiency in contact analysis due to the large number of finite element meshes in the face gear torque transmission system.

The invention discloses a three-axis linkage synchronous swinging toothbrush head supported by a block full-length bearing, and belongs to the technical field of oral cleaning appliances. The driving swinging component, the first driven swinging component and the second driven swinging component are arranged in the static shell in a swinging mode. A rigid driving shifting piece is arranged on the driving swing component and inserted into the driving groove of the first driven swing component to drive the first driven swing component to swing. The first driven swing component and the second driven swing component are provided with tooth sections which are meshed with each other to form a phase control synchronizing mechanism. And an annular guide supporting surface which continuously extends along the swinging axis direction is arranged in the static shell and is in sliding fit with the peripheral surfaces of the three swinging components to form a full-length bearing supporting structure. Through full-length bearing supporting in the block shell, the stability of a multi-shaft swing structure is improved, and through cooperation of rigid shifting piece driving and a phase synchronization mechanism, the multi-shaft swing mechanism has the advantages of being reliable in transmission, low in noise, resistant to abrasion and good in cleaning effect.

The utility model discloses a ton bag feeding device for chemical fertilizer mixing, including frame and control device, and the frame includes lower frame body and support frame, and the control device is installed between the support frame of both sides. Control device includes linear guide rail, double -end screw and control board, and linear guide rail support installation is on the support frame of one side, and double -end screw rotatory support installation is on the support frame of the other side, and one end of two control boards is respectively with linear guide rail sliding fit connection, and the other end of two control boards respectively with the positive tooth segment and the reverse tooth segment screw thread cooperation of double -end screw rotatory joint, and one end of double -end screw is installed with drive arrangement. The utility model discloses the interval between two control boards is adjusted to control the flow of the discharge bag mouth, and when the control board of both sides is closed to a certain distance, and the discharge bag mouth is closed, and when the worker first unties the rope, or needs to use the rope to tie the discharge bag mouth, the ton bag is located on the frame, and the safety hazard is reduced.

The invention relates to a stator (10) for an electric machine (52), comprising at least one stator tooth ring (12) extending in a ring shape around an axial direction (11), wherein the stator tooth ring (12) is segmented in the axial direction (11) into at least one axial tooth ring of the first type (30) and at least one axial tooth ring of the second type (32), wherein the at least one axial tooth ring of the first type (30) is segmented in a circumferential direction (15) of the stator tooth ring (12) into at least one T-shaped tooth segment (24) with teeth (14) pointing outwards in a radial direction (13) of the stator tooth ring (12), and the at least one axial tooth ring of the second type (32) is segmented in the circumferential direction (15) of the stator tooth ring (12) into at least one U-shaped tooth segment (26) with teeth (14) pointing outwards in the radial direction (13) of the stator tooth ring (12). It is segmented. The stator has improved magnetic properties and simultaneously allows for wave winding.

The utility model provides a plastic particle color mixing device, a plastic stirring machine and a machine cover. The utility model relates to the technical field of plastic particle color mixing. According to the plastic particle color mixing device, a discontinuous opening and closing mechanism is arranged, coloring agent powder can be placed in a storage hopper, when a plastic stirring machine stirs plastic particles, a motor is started to drive a rotating rod to rotate around a second bearing (22), and the rotating rod can drive a missing gear to rotate; when the tooth section of the missing gear is in contact with the transmission gear, the transmission gear, the transmission rod and the baffle are driven to rotate, at the moment, coloring agent powder falls into the plastic stirring machine through the discharging pipe, and when the tooth section of the missing gear is not in contact with the transmission gear, torsion generated by the torsion spring drives the transmission gear, the transmission rod and the baffle to reset. And the steps are sequentially circulated, so that the effect of discontinuously adding the coloring agent powder is achieved, and the dyeing effect is further improved.

The application discloses a lid driving locking assembly, a lid assembly and a vehicle, and solves the technical problem that an existing external-flap lid is easy to scratch human skin or clothes and cause a safety hazard. The lid driving locking assembly provided by the embodiment of the application comprises a mounting frame, a driven support, a locking mechanism and a driving mechanism. The driven support is slidingly connected to the mounting frame and is provided with a tooth segment. The locking mechanism comprises a first locking part and a second locking part matched with each other. The driving mechanism comprises a restoring part, a driving wheel, a driven cam and a driven gear. The second locking part slides relative to the mounting frame under the driving of the driven cam to be unlocked with the first locking part. The driven support slides relative to the mounting frame under the driving of the driven gear when the first locking part and the second locking part are in the unlocked state to open or close the lid. The application adopts one driving wheel to drive and cooperates with a sliding mode to realize the opening or closing and locking or unlocking of the lid, reduces the safety hazard and saves the space.

A stator for an electric motor, in particular as a drive of a power tool, comprises at least one first toothed arrangement and one second toothed arrangement, each having a rod element for receiving a radial arrangement of coil windings. Each tooth arrangement comprises an arcuate ring section and a connecting device with a first connecting element and a second connecting element, the first connecting element comprising a first contact surface extending obliquely with respect to the plane of the tooth section and a T-shaped portion, and the second connecting element comprising a second contact surface extending obliquely with respect to the plane of the tooth section. The first connecting element comprises a first contact surface and a T-shaped part, and the second connecting element comprises a second contact surface extending obliquely with respect to the tooth segment plane and a T-shaped receiving region, and wherein the first contact surface and the second contact surface as well as the T-shaped part and the T-shaped receiving region are configured in such a way that the first connecting element and the second connecting element can be connected to each other in a form-fitting manner.

The utility model discloses a front cover drive assembly and vehicle with it, front cover drive assembly includes: drive part and drive shaft, drive part and drive shaft transmission connection, be equipped with drive gear on drive shaft, drive arm, be equipped with connecting portion on drive arm, drive arm is equipped with tooth segment in one end of first direction, first direction is perpendicular with the axis direction of drive gear, and tooth segment and connecting portion are arranged in first direction interval, and tooth segment is engaged with drive gear, front cover hinge is used for being linked with front cover, and front cover hinge is rotatably connected with connecting portion, and drive gear is suitable for driving drive arm swing to drive front cover hinge to open and close front cover. According to the front cover drive assembly of the utility model, through setting tooth segment on drive arm, drive gear drives drive arm swing through tooth segment to realize the drive of front cover hinge, and the structure of front cover drive assembly is relatively simple, and the reliability is higher, and the production cost is lower.

The utility model discloses a cold pressing die for a spherical end socket, relates to the technical field of stamping dies, and aims to solve the problems that a material plate (blank) is easy to deviate due to operation errors or inertia when being placed on a bottom die, so that the wall thickness of the formed end socket is not uniform, the edge is not symmetrical and the like. A group of outer ring pieces are mounted on the outer wall of the bottom die, a ring groove is formed in the top surface of each outer ring piece, a correcting mechanism and a driving mechanism are arranged in each ring groove, a cover plate is arranged on the top surface of each outer ring piece, a through hole is formed in the top surface of each cover plate and is in sliding connection with the correcting mechanism, and an electric push cylinder capable of driving the correcting mechanism to ascend and descend is arranged on each outer ring piece; an outer ring piece is integrated with a correcting mechanism and a driving mechanism, an electric push cylinder can accurately control lifting of a correcting block, a driving motor is matched to drive a rotating piece and an inner ring tooth section, successive meshing driving of four sets of correcting gears is achieved, the correcting block conducts dynamic centering adjustment on a material plate, manual correction is thoroughly replaced, and the correcting efficiency is improved. And the positioning precision and the operation safety are obviously improved.

This utility model provides a multifunctional kitchen tool, including a first shear body, a second shear body, a first shear handle, and a second shear handle. The first shear body is connected to the first shear handle, and the second shear body is connected to the second shear handle. The first and second shear bodies are movably connected by screws. The first shear body is provided with a cutter, and a scaler is provided below the cutter. A rectangular hole is provided to the right of the cutter and the scaler. A main screw hole is provided to the right of the rectangular hole. A locking pin is provided to the right of the main screw hole. A first toothed section is provided to the right of the locking pin. The second shear body is provided with a bottle opener. A second toothed section is provided to the right of the bottle opener. A secondary screw hole is provided to the right of the second toothed section. A locking shaft is provided to the right of the secondary screw hole. A third toothed section is provided to the right of the locking shaft. The rectangular hole is provided with teeth. The rectangular hole with teeth and the second toothed section are combined to form a screw cutter.

The utility model relates to a concentric tooth thread rolling wheel body for a thread rolling machine. The concentric tooth thread rolling wheel body is used for machining rolled threads after assembly. The thread rolling wheel body is in a cone frustum shape and is provided with a cylindrical hole in the axial direction, the wheel face of the thread rolling wheel body is provided with a plurality of thread rolling teeth surrounding a wheel shaft of the thread rolling wheel body, the thread rolling teeth are distributed on the wheel shaft of the thread rolling wheel body at equal intervals in the axial direction, each thread rolling tooth is in a circular ring shape, and the circle center of each thread rolling tooth is located on the axis of the wheel shaft of the thread rolling wheel body. 2-3 different included angles are formed between the connecting line of the tops of the thread rolling teeth and the axis. The concentric tooth thread rolling wheel body sucks the thread rolling teeth through the front section, so that steel pipe threads are machined more conveniently in a labor-saving mode, and the output strength of workers is reduced. According to the concentric tooth thread rolling wheel, the tooth stress structure during thread machining is guaranteed through the length of 0.5-1 tooth at the front end of the gap and the fact that the last tooth of the standard tooth section is the complete tooth, and therefore the machining service life of the concentric tooth thread rolling wheel body is prolonged.

The invention relates to the technical field of ceramic extruders, in particular to a composite ceramic extruder with a cleaning function. Comprising a frame, a lifting frame is arranged on the frame, an extrusion station and a cleaning station are symmetrically arranged on the frame, a rotary support is rotationally connected to the lifting frame, and two symmetrically-arranged extrusion mechanisms are installed on the rotary support; the extrusion mechanism comprises a cover seat fixedly arranged on the rotary support, a vibration frame connected to the rotary support in a sliding mode, a top shaft rotationally connected to the rotary support and a rotating wheel, a spring is arranged between the vibration frame and the cover seat, a transmission shaft is rotationally connected to the vibration frame, the transmission shaft is in linkage with the top shaft, and three cleaning tooth sections and three empty tooth sections are alternately arranged on the rotating wheel; a toothed plate is installed on the vibration frame, and the three cleaning tooth sections are alternately meshed with the toothed plate. The rapid cleaning device has the beneficial effect that rapid cleaning of the extrusion part is achieved.

This invention discloses a rapid phase detection fixture for a helical shaft, comprising a support base, a test base, a test piece, and a clamping mechanism. Both the test base and the clamping mechanism are mounted on the support base. The test piece includes an encoder and an elastic rod. The encoder is an annular component mounted on the test base and has a stator ring and a rotor ring coaxially rotatably connected. The stator ring is connected to the test base. The elastic rod is radially mounted on the rotor ring, with its telescopic end facing inwards towards the rotor ring. The telescopic end of the elastic rod has a ball head that can extend into the helical tooth groove. The helical shaft coaxially passes through the encoder ring and is clamped by the clamping mechanism. The clamping mechanism thus clamps and fixes the helical shaft coaxially passing through the encoder. The test piece then measures the phase of each of the multiple helical tooth grooves at the helical tooth segment. The phase is then compared with design parameters to determine whether the machining accuracy of each helical dimension of the helical shaft meets the requirements.

This invention relates to the field of ceramic processing equipment technology, and provides an automated glazing device for ceramic product processing; a main body with a glazing chamber inside; a central wheel rotatably mounted inside the main body, with multiple clamping components evenly distributed on the central wheel; the clamping components are elastically rotatably mounted along the radial direction of the central wheel, and a gear is fixedly mounted at the end of the clamping component away from the central wheel; an arc-shaped rod is mounted at the bottom of the glazing chamber of the main body, and is elastically rotatably mounted in the main body around the central wheel, with several tooth segments arrayed on the side wall of the arc-shaped rod, and the tooth segments are arranged on the track of the gear; several blades are arrayed on the top of the arc-shaped rod; and two partition plates are installed inside the main body, with one end of each partition plate close to the side of the central wheel, and the other end extending to the inner wall respectively. The main body, the two partition plates, and the central wheel enclose a drying chamber, and several hot air holes are provided on the side wall of the drying chamber.

The application provides a step-by-step lifting building assembly work platform, which is used to solve the problems of the prior art, such as the separate setting of a lifting frame, a lifting device and a falling prevention device, complex device structure, high cost and poor stability. The building assembly work platform comprises a plurality of assembly units arranged between two concrete columns of a building to be constructed, each of the assembly units comprises a lifting frame, a falling prevention lifting assembly and a positioning guide assembly, the falling prevention lifting assembly comprises two sets of limiting mechanisms connected through a pushing hydraulic cylinder, the two sets of limiting mechanisms are in meshing limiting with limiting tooth segments on the limiting columns, and the positioning guide assembly comprises two sets of guide mechanisms arranged at two ends of the lifting frame respectively. The step-by-step lifting of the lifting frame is realized through the cooperation of the two sets of limiting mechanisms, the pushing hydraulic cylinder and the limiting tooth segments, and more than one set of limiting mechanisms is used to limit the vertical direction of the lifting frame during the lifting or lowering of the lifting frame, so that the device structure is simple, and the safety and stability are high.

ratchet key structure a main body (10) having at one end a first receiving chamber (11) which is circular, wherein a second receiving chamber (12) is formed on one side of the first receiving chamber (11) which is connected to the first receiving chamber (11), wherein the diameter of the second receiving chamber (12) is smaller than that of the first receiving chamber (11), wherein the center of the second receiving chamber (12) is located inside the first receiving chamber (11), wherein the second receiving chamber (12) is closed at the top and bottom, wherein a first annular groove (13) which is circular is provided in the first receiving chamber (11), wherein the first annular groove (13) is located near the lower opening, wherein the first receiving chamber (11) forms a first contact section (14) near the upper opening; in two dimensions the first recording space (11) forms a first circle (15) having a first center (151) and a vertical line (152) through the first center (151), the first circle (15) having a first radius (153), the second recording space (12) forming a second circle (154) having a second center (155) lying inside the first circle (15), the second circle (154) having a second radius (156) that is smaller than the first radius (153), a first distance (157) being between the first center (152) and the second center (155), and a first corner (158) being formed at the intersection points of the first circle (15) and the second circle (154); a ratchet wheel (20) rotatably arranged in the first receiving space (11) and having a ratchet part (21) on its outer circumferential surface, which is designed in the form of a toothed ring, wherein the ratchet wheel (20) forms a fitting part (22) inside, wherein the ratchet wheel (20) is provided with a second annular groove (13) which is aligned with the first annular groove (13), wherein the ratchet wheel (20) forms a second contact section (24) which rests against the first contact section (14); a pawl (30) arranged in the second receiving space (12) and bearing against one side, the front of the pawl (30) being provided with a toothed segment (31) that meshes with the ratchet part (21), the toothed segment (31) having a first arc section (311) which is a convex arc section, wherein a second arc section (312) is formed on each of the two sides of the first arc section (311), the two second arc sections (312) being symmetrical to the first arc section (311) and convex arc sections, wherein a connecting arc section (313) is formed between the first and the second arc section (311), wherein the two connecting arc sections (313) are symmetrical to the first arc section (311) and nearly arc-shaped, the connecting arc section (313) being tangential to the first arc section (311), and wherein the connecting arc section (313) runs tangentially to the second arc section (312);wherein the first arc segment (311) has a third radius (314) and the second arc segment (312) has a fourth radius (315), the fourth radius (315) being equal to or nearly equal to the size of the third radius (314); ; wherein the locking pawl (30) forms a recess (32) at one end, wherein the recess (32) has a first contact surface (321), a second contact surface (322) and a third contact surface (323) extending almost vertically to each other, wherein the first contact surface (321), the second contact surface (322) and the third contact surface (323) are planar, wherein the first contact surface (321) has a first width (324) and a second width (325), wherein the first width (324) and a second width (325) extend vertically to each other, and wherein the first width (324) is equal to the size of the second width (325); wherein the pawl (30) has a first surface (33) centrally on its rear side, wherein the first surface (33) abuts the wall of the second receiving space (12) and is convex arcuate or arcuate, wherein a second surface (34) is formed on one side of the first surface (33), wherein the second surface (34) is located between the first surface (33) and the recess (32), does not abut the wall of the second receiving space (12) and is planar, convex arcuate or arcuate, wherein a third surface (35) is formed on the other side of the first surface (33), which is planar, convex arcuate or arcuate, wherein an end surface (36) is formed at the other end of the pawl (30), which faces away from the recess (32) and is located between the third surface (35) and the toothed segment (31); wherein the teeth of the tooth segment (31) form a first arc (37), wherein the first arc (37) is coaxial to the first circle (15) and has similar dimensions, wherein the first surface (33) forms a second arc (371), wherein the second arc (371) has the same radius as the second circle (154), wherein a second corner (372) is formed at the intersection points of the first arc (37) and the second arc (371), the second corner (372) being close to the first corner (158), wherein a space (373) is formed between the first arc (37), the second arc (371) and the end surface (36), i.e. the end surface (36) does not touch either the first corner (158) or the second corner (372), so that the pawl (30) does not contact either the first corner (158) or the second corner (372); a limiting element (40) arranged in the second receiving chamber (12) and abutting the opposite side, wherein the limiting element (40) has a fourth surface (41) on its front side, the fourth surface (41) facing the ratchet part (21) and being concavely arcuate, wherein the limiting element (40) has a fifth surface (42) on one side, which faces the recess (32) and is planar, the fifth surface (42) being parallel or nearly parallel to the first contact surface (321), wherein the limiting element (40) has a sixth surface (43) on its rear side, the sixth surface (43) abutting the wall of the second receiving chamber (12) and being convexly arcuate, wherein the limiting element (40) has a first contact edge (44) facing the second contact surface (322) and located between the fourth and fifth surfaces (41), (42), and wherein the first attachment edge (44) is a projection; an elastic element (50) that is partially housed in the recess (32), wherein the elastic element (50) is located between the first contact surface (321) and the fifth surface (42), whereby the tooth segment (31) meshes with the ratchet part (21), wherein one end of the elastic element (50) forms a first end (51) that abuts the first contact surface (321) and has a first diameter (52), wherein the first diameter (52) corresponds to the first width (324) and the second width (325), wherein the other end of the elastic element (50) forms a second end (53) that abuts the fifth surface (42) and has a second diameter (54), and wherein the second diameter (54) is smaller than the first diameter (52); wherein the first diameter (52) corresponds to the first width (324) and the second width (325), whereby the first end (51) is bounded by the first contact surface (321), the second contact surface (322), the third contact surface (323) and the second receiving space (12), so that the first end (51) is fixed in the recess (32) and cannot move upwards, downwards, left or right there, wherein the recess (32) has the function of bounding the first end (51), wherein the second end (53) is bounded by the first contact edge (44) and therefore cannot detach from the second receiving space (12), whereby the elastic element (50) is fixed between the pawl (30) and the limiting element (40) and cannot detach from the second receiving space (12); and a locking ring (60) which is C-shaped and slightly elastic, wherein the locking ring (60) is received in the first annular groove (13) and the second annular groove (23) so that the ratchet wheel (20) is rotatably arranged in the first receiving space (11).

The invention discloses a split-half tooth yoke separation type outer rotor core structure for a concentrated winding type motor, and relates to the field of stator and rotor core structures, and the split-half tooth yoke separation type outer rotor core structure is characterized in that magnetic steel is uniformly arranged on the inner side of a rotor core body at equal intervals, a stator core is arranged on the inner side of the rotor core body, and the stator core is of a tooth yoke separation type structure; the inner side end part of the stator core is a stator tooth part, and the stator tooth part is of a split-half structure. According to the split-half tooth yoke separation type outer rotor iron core structure for the concentrated winding type motor, a circle of magnetic steel which is uniformly distributed is arranged on the inner side of a rotor iron core body, a stator iron core is correspondingly arranged on the inner side of the rotor iron core body, the stator iron core is in a tooth yoke separation type design, and a stator tooth part adopts a split-half type structure; and after all the flat copper wires are wound, the flat copper wires are integrally spliced and formed, and the groove type of the stator iron core is a parallel groove design, so that the space utilization rate of the stator groove is greatly improved.

A stator for an electric motor, in particular as a drive of a power tool, comprises at least one first toothed arrangement and one second toothed arrangement, each having a web element for receiving a radial arrangement of coil windings. Each toothed arrangement comprises an arcuate ring section and a connecting device having a first connecting element and a second connecting element, the first connecting element and the second connecting element being configured in the shape of a wedge such that, in the connected state, the first connecting element and the second connecting element are connected to each other. A first contact surface of the first connecting element, which extends obliquely with respect to the tooth segment plane, rests on a second contact surface of the second connecting element, which extends obliquely with respect to the tooth segment plane, and wherein the first connecting element comprises a first radially outwardly directed projection and the second connecting element comprises a second radially outwardly directed projection, and wherein the first connecting element comprises a first undercut and the second connecting element comprises a second undercut, the undercuts being configured to receive and retain at least one clip element.