CN212156278U - Telescopic pull rod mechanism and fan - Google Patents

Abstract

The utility model provides a flexible pull rod mechanism, can be used to the fan, including the pull rod, half open cup joint portion, the cam is dialled and is turned round, set up in the cam portion's that the cam was dialled and is turned round pin axle, the connecting rod of connecting pin axle, support and push away the seat, the pull rod runs through cup joint portion, cup joint portion is equipped with relative first butt portion and second butt portion, first butt portion, second butt portion, support and push away the seat, the round pin axle distributes in proper order on the connecting rod, the cam is dialled and is turned round the locking pull rod of portion of cup joint when being located the first position, the cam is dialled and is turned round the portion of cup joint when using the round pin axle to rotate to a second position as the axle, support and push away the seat including first protruding portion and the second protruding portion that are located its opposite both sides, first protruding portion at. By the design, the cam is more closely linked with the button, the pushing seat and the second abutting part, so that the relative position among the cam and the pushing seat is kept, the user experience is improved, and the cam pushing device is more practical.

Description

Telescopic pull rod mechanism and fan

The application is a divisional application of a Chinese utility model patent application with the application date of 2019, 16.06 and the application number of 201920927626.5 and the name of 'one fan'.

[ technical field ] A method for producing a semiconductor device

The utility model relates to a fan with flexible pull rod and affiliated.

[ background of the invention ]

In the prior art, the handle is used as the more common components of equipment such as fans, and is usually arranged at the rear side of the fan, the fan is moved by matching with the wheels of the fan, the handle can be designed to be telescopic, so that the user who promotes the handle can experience the use, how to better configure the handle device to the outer side of the fan, how to promote the locking use experience of the pull rod of the telescopic handle device, and the like, and the aim of continuously improving and optimizing the handle device in the prior art is fulfilled.

[ Utility model ] content

The utility model provides a comparatively practical fan of structure with flexible pull rod.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a fan, including the wheel, a housing, first outer tube, the second outer tube, assemble the pull rod to first outer tube and second outer tube, the pull rod is including can at least partly nest in first outer tube in order can be along the flexible first pole portion of first outer tube pull, can at least partly nest in the second outer tube in order can be along the flexible second pole portion of second outer tube pull, first outer tube is equipped with opposite first end and second end, the second outer tube is equipped with opposite third end and fourth end, the fan is still including the half-open portion of cup jointing that is used for locking first pole portion, be fixed in the fixed part of second end, the portion of cup jointing links as an organic wholely with corresponding fixed part.

By means of the design, the pull rod can be conveniently configured on the first outer pipe and the second outer pipe by means of the sleeve joint part and the fixing part, the pull rod is matched with the movable fan which can be relaxed through wheels, and therefore the structure is practical.

Furthermore, the fan further comprises a first cross beam for positioning the first outer tube and the second outer tube, the first cross beam is fixedly arranged on the shell, and the first outer tube and the second outer tube are respectively and fixedly connected with the first cross beam. By the design, the first outer pipe and the second outer pipe are combined together through the first cross beam.

Furthermore, the first cross beam is provided with a first sleeve part and a second sleeve part, the first sleeve part and the second sleeve part are spaced in the length direction of the first cross beam, the first end part is nested in the first sleeve part, the first end part is fixedly locked in the first sleeve part, the third end part is nested in the second sleeve part, and the third end part is fixedly locked in the second sleeve part.

Furthermore, the first beam is provided with a first folded edge, the first folded edge connects the first sleeve part and the second sleeve part, one end of the first folded edge, which is plugged in the first sleeve part, forms the bottom wall of the first sleeve part, the first end part is connected with the bottom wall of the first sleeve part, the other end of the first folded edge, which is plugged in the second sleeve part, forms the bottom wall of the second sleeve part, and the third end part is connected with the bottom wall of the first sleeve part.

Furthermore, the fan further comprises a plurality of fan blades positioned in the outer shell, a first screw and a second screw, wherein the first screw and the second screw are used for locking the first cross beam on the outer shell, the first cross beam is provided with a first screw hole corresponding to the first screw and a second screw hole corresponding to the second screw, the first screw hole and the second screw hole are positioned between the first sleeve part and the second sleeve part, the first screw hole is relatively close to the first sleeve part and is far away from the second sleeve part, and the second screw hole is relatively close to the second sleeve part and is far away from the first sleeve part. The layout is beneficial to the more balanced and stable locking of the cross beam on the shell.

Further, the first sleeve part and the second sleeve part are parallel, and the first sleeve part and the second sleeve part are located at two opposite ends of the first cross beam in the length direction.

Further, the fan further comprises a third screw for locking the first end part to the first sleeve part, the third screw extends into the first end part, and the third screw can block the first rod part on the retraction path of the first rod part to prevent the first rod part from further retracting.

Further, the fan further comprises a fourth screw for locking the third end part to the second sleeve part, the fourth screw extends into the third end part, and the fourth screw can block the second rod part on the retraction path of the second rod part to prevent the second rod part from further retracting.

Furthermore, the fan further comprises a second cross beam, the pull rod further comprises a cross rod connected with the first rod part and the second rod part, the second cross beam is located between the first cross beam and the cross rod, the first outer tube and the second outer tube respectively penetrate through the second cross beam, and the second cross beam is fixedly installed on the shell.

Further, the second cross beam is provided with a third sleeve portion nested outside the first outer tube and a fourth sleeve portion nested outside the second outer tube, the third sleeve portion and the fourth sleeve portion are spaced apart in the longitudinal direction of the second cross beam, the first outer tube penetrates the second cross beam through the third sleeve portion, and the second outer tube penetrates the second cross beam through the fourth sleeve portion.

Further, the third sleeve portion and the fourth sleeve portion are parallel, and the third sleeve portion and the fourth sleeve portion are located at opposite ends of the second cross beam in the length direction.

Furthermore, the second cross beam is also connected with a third folded edge and a fourth folded edge which are opposite at intervals, the third folded edge is connected with a third sleeve part and a fourth sleeve part, the fourth folded edge is connected with the third sleeve part and the fourth sleeve part, the shell is provided with a plurality of first positioning bulges and a plurality of second positioning bulges, the first positioning bulges and the second positioning bulges are positioned between the third folded edge and the fourth folded edge, the first positioning bulges are connected and leaned against the third folded edge in the direction away from the fourth folded edge, and the second positioning bulges are connected and leaned against the fourth folded edge in the direction away from the third folded edge; the first positioning protrusions are arranged in a row, and the second positioning protrusions are arranged in a row. By the design, the second cross beam is accurately positioned to the shell through the matching of the first positioning bulge, the second positioning bulge, the third folding edge and the fourth folding edge.

Further, the first outer pipe is perpendicular to the length direction of the second cross beam, and the length direction of the first cross beam is parallel to the length direction of the second cross beam; the first outer tube is parallel to the second outer tube, and the first rod part is parallel to the second outer tube.

Furthermore, the fixing part is cylindrical and is nested outside the second end part.

Furthermore, the fan further comprises a fifth screw, the fixing portion is provided with a boss portion, the second end portion is fixedly provided with a nut, the nut is located in the boss portion, and the boss portion is fixedly locked on the nut through the fifth screw so as to fixedly lock the fixing portion on the second end portion.

The fan further comprises a cam shifting knob, a pin shaft and a connecting rod connected with the pin shaft, wherein the cam shifting knob is provided with a cam part, the pin shaft is arranged at the cam part, the sleeving part is provided with a first abutting part and a second abutting part which are opposite, the first abutting part, the second abutting part and the pin shaft are sequentially distributed on the connecting rod, the sleeving part locks the first rod part when the cam shifting knob is positioned at a first position, and the sleeving part releases the first rod part when the cam shifting knob rotates from the first position to a second position by taking the pin shaft as an axis; the cam shifting knob directly or indirectly pushes the second abutting part to be close to the second abutting part in the process of rotating from the second position to the first position by taking the pin shaft as an axis, so that the cross section area of the sleeving part is contracted to lock the pull rod.

Further, the fan further comprises a pushing seat, the pushing seat comprises a first protruding portion and a second protruding portion, the first protruding portion and the second protruding portion are located on two opposite sides of the pushing seat, at least part of the first protruding portion is embedded into the second abutting portion, at least part of the second protruding portion is embedded into the cam portion, and the cam shifting knob is used for pushing the second abutting portion to be close to the second abutting portion through the pushing seat to enable the cross-sectional area of the sleeving portion to shrink and lock the pull rod in the process of rotating from the second position to the first position by taking the pin shaft as an axis. Embedding cooperation makes the cam dial to turn round, supports to push away seat, second butt portion three and links inseparabler, does benefit to the maintenance of relative position between the three, and the user uses and experiences and can promote.

Furthermore, the second abutting part is provided with an accommodating hole, the connecting rod penetrates through the accommodating hole and the first protruding part, the first protruding part is embedded into the accommodating hole, and the accommodating hole can block the first protruding part from rotating by taking the axis of the connecting rod as a rotating axis. The design is favorable for keeping the position of the abutting seat relative to the second abutting part.

Furthermore, the cross section of the first protruding part is polygonal, and the cross section of the accommodating hole is polygonal matched with the first protruding part.

Furthermore, the connecting rod is perpendicular to the pin shaft, the second protruding portion comprises a first portion and a second portion which are located on two opposite sides of the connecting rod in the radial direction, the connecting rod penetrates through the first portion and the second portion, the first portion and the second portion are at least partially embedded between the first cam portion and the second cam portion respectively, and the pushing seat blocks the cam toggle from rotating relative to the second abutting portion by taking the connecting rod as a shaft.

Furthermore, the cam part comprises a first cam part and a second cam part which are opposite, the connecting rod part extends into the space between the first cam part and the second cam part and is connected with the pin shaft, the first cam part is provided with a first shaft hole corresponding to the pin shaft, the second cam part is provided with a second shaft hole corresponding to the pin shaft, the first shaft hole and the second shaft hole are opposite in the axial direction of the pin shaft, and the second protruding part is at least partially embedded between the first cam part and the second cam part.

Further, the second protrusion includes a first portion and a second portion located on opposite sides of the link in a radial direction, the link passes through between the first portion and the second portion, and the first portion and the second portion are at least partially embedded between the first cam portion and the second cam portion, respectively.

Furthermore, the connecting rod is perpendicular to the pin shaft, the first part and the second part are positioned on two opposite sides of the connecting rod in the first direction, and the first direction is perpendicular to the axial direction of the connecting rod and the axial direction of the pin shaft; when the cam dial knob is located at the second position, the pin shaft part is accommodated between the first part and the second part.

Furthermore, the first part is provided with a first concave surface which is concave in the direction far away from the pin shaft, the second part is provided with a second concave surface which is concave in the direction far away from the pin shaft, the first concave surface and the second concave surface are positioned on two opposite sides of the connecting rod in the radial direction, the connecting rod penetrates through the first concave surface and the second concave surface, and when the cam shifting knob is positioned at the second position, the pin shaft part enters between the first concave surface and the second concave surface. First concave surface and second concave surface can more match with the round pin axle, do benefit to the round pin axle that the part of more adaptability held the entering, and the space utilization is compacter.

Furthermore, the fan further comprises an elastic part sleeved on the connecting rod, the abutting-pushing seat is provided with an abutting surface, the abutting surface surrounds the connecting rod, one end of the elastic part is located in the first protruding portion, the abutting surface is located in the first protruding portion, and when the cam shifting knob is located at the first position, one end of the elastic part abuts against the first abutting portion, and the other end of the elastic part abuts against the abutting surface.

Further, the fan still includes the end cap of cover on the connecting rod, and first butt portion is located between end cap and the second butt portion, and the connecting rod includes the body of rod and an organic whole connects in the headstock of the body of rod, and the headstock holds in the end cap, connecting rod perpendicular to round pin axle, connecting rod threaded connection in round pin axle, and the end cap drives the connecting rod and rotates for the round pin axle during rotatory end cap, and when the cam was dialled to turn round and is located the primary importance, the end cap was supported towards second butt portion and is pressed in first butt. Therefore, the connecting rod and the pin shaft can be further screwed together or disassembled by screwing the end cap.

Furthermore, the fan still includes the end cap of cover on the connecting rod, and first butt portion is located between end cap and the second butt portion, and the connecting rod includes the body of rod and integrative the headstock of connecting in the body of rod, and the end cap is equipped with barb portion, backstop portion, and the headstock holds in the end cap and spacing between barb portion and backstop portion, and when the cam was dialled to turn round and is located the first position, the end cap was supported towards the second butt portion and is pressed in first butt portion.

Further, the end cap is provided with a containing cavity, the barb part is positioned in the containing cavity, the stopping part is in an annular shape surrounding the connecting rod body, the stopping part is positioned at one end of the containing cavity, and the stopping part is positioned between the first abutting part and the head seat.

Furthermore, the stopping part is provided with a yielding notch corresponding to the barb part, and the yielding notch can form a demoulding opening for the barb part. The abdication gap is convenient for demoulding and forming the barb part.

Further, the projection of the abdicating notch along the axial direction of the connecting rod covers the projection of the stopping part along the axial direction of the connecting rod.

Furthermore, the fan also comprises another half-open sleeving part for locking the second rod part and another fixing part fixed at the fourth end part, and each sleeving part is integrally connected with the corresponding fixing part.

Furthermore, the fan further comprises a first inner cylinder nested in the second end portion, the first inner cylinder is integrally connected with the corresponding sleeving portion, the first rod portion penetrates through the first inner cylinder, the first rod portion is provided with a first stopping member, and the first inner cylinder can block the first stopping member on an outward drawing line of the first rod portion so as to prevent the first rod portion from being continuously drawn outward.

The application also provides a telescopic pull rod mechanism, including the pull rod, half open cup joint portion, the cam is dialled and is turned round, set up in the cam portion's that the cam was dialled and is turned round the round pin axle, the connecting rod of connecting pin axle, support and push away the seat, the pull rod runs through cup joint portion, cup joint portion is equipped with relative first butt portion and second butt portion, first butt portion, second butt portion, support and push away the seat, the round pin axle distributes in proper order on the connecting rod, the cam is dialled and is turned round the locking pull rod of portion of cup joint when being located the first position, the cam is dialled and is turned round the portion of cup joint release pull rod when taking the round pin axle to rotate to a second position from the first position, support and push away the seat including first protruding portion and the second protruding portion that are located its opposite both sides, first protruding portion at least part imbeds in. By the design, the cam is more closely linked with the button, the pushing seat and the second abutting part, so that the relative position among the cam and the pushing seat is kept, the user experience is improved, and the cam pushing device is more practical.

Furthermore, the second abutting part is provided with an accommodating hole, the first protruding part is embedded into the accommodating hole, the connecting rod penetrates through the accommodating hole and the first protruding part, the cross section of the first protruding part is polygonal, and the cross section of the accommodating hole is matched with the polygon of the first protruding part so as to prevent the first protruding part from rotating by taking the axis of the connecting rod as a rotation axis. The design is favorable for keeping the position of the abutting seat relative to the second abutting part.

Furthermore, the telescopic pull rod mechanism also comprises an outer tube and a cylindrical fixing part, and the fixing part is nested outside the end part of the outer tube; the fixing part is provided with a boss part, the end part of the outer tube is fixedly provided with a nut, the nut is positioned in the boss part, and the boss part is locked on the nut by a screw so as to lock the fixing part on the end part of the outer tube; the second fixing part is cylindrical and is nested outside the second end part; the sleeve joint part is also provided with a C-shaped part, the first abutting part is integrally connected to one end of the circumferential direction of the C-shaped part, the second abutting part is integrally connected to the other end of the circumferential direction of the C-shaped part, and the cam shifting knob is used for pushing the second abutting part to be close to the second abutting part by abutting against the pushing seat to enable the cross section area of the sleeve joint part to be contracted so as to lock the pull rod in the process of rotating from the second position to the first position by taking the pin shaft as an axis; the connecting rod is perpendicular to the pin shaft, the second protruding portion comprises a first portion and a second portion which are located on two opposite sides of the connecting rod in the radial direction, the connecting rod penetrates through the first portion and the second portion, the first portion and the second portion are at least partially embedded between the first cam portion and the second cam portion respectively, and the pushing seat blocks the cam shifting knob to rotate relative to the second abutting portion by taking the connecting rod as a shaft.

Furthermore, the connecting rod is perpendicular to the pin shaft, the cam part comprises a first cam part and a second cam part which are opposite, the connecting rod part extends into the space between the first cam part and the second cam part to be connected with the pin shaft, the first cam part is provided with a first shaft hole corresponding to the pin shaft, the second cam part is provided with a second shaft hole corresponding to the pin shaft, the first shaft hole and the second shaft hole are opposite in the axial direction of the pin shaft, and the second protruding part is at least partially embedded between the first cam part and the second cam part; the second protrusion includes a first portion and a second portion located on opposite sides of the link in a radial direction, the link passes through between the first portion and the second portion, and the first portion and the second portion are at least partially embedded between the first cam portion and the second cam portion, respectively.

Furthermore, the first part and the second part are positioned on two opposite sides of the connecting rod in a first direction, and the first direction is perpendicular to the axial direction of the connecting rod and the axial direction of the pin shaft; when the cam dial knob is located at the second position, the pin shaft part is accommodated between the first part and the second part.

Furthermore, the first part is provided with a first concave surface which is concave in the direction far away from the pin shaft, the second part is provided with a second concave surface which is concave in the direction far away from the pin shaft, the first concave surface and the first concave surface are positioned on two opposite sides of the connecting rod in the radial direction, the connecting rod penetrates through the first concave surface and the second concave surface, and when the cam is arranged at the second position, the pin shaft part is accommodated between the first concave surface and the second concave surface.

Furthermore, telescopic pull rod mechanism still includes the end cap of cover on the connecting rod, and first butt portion is located between end cap and the second butt portion, and the connecting rod includes the body of rod and an organic whole connects in the headstock of the body of rod, and the end cap is equipped with barb portion, backstop portion, and the headstock holds in the end cap and spacing between barb portion and backstop portion, and when the cam was dialled to turn round and is located the first position, the end cap was pushed in first butt portion and was pushed the seat towards first butt portion and push against in second butt portion towards second butt portion.

Furthermore, the end cap is provided with an accommodating cavity, the barb part is positioned in the accommodating cavity, the stopping part is annular and surrounds the connecting rod body, the stopping part is positioned at one end of the accommodating cavity, and the stopping part is positioned between the first abutting part and the head seat; the stopping part is provided with a yielding notch corresponding to the barb part, and the axial projection of the stopping part along the connecting rod is covered by the yielding notch along the axial projection of the connecting rod.

Further, flexible pull rod mechanism still includes the end cap of cover on the connecting rod, connecting rod perpendicular to round pin axle, and the connecting rod includes the body of rod and an organic whole connects in the headstock of the body of rod, and first butt portion is located between end cap and the second butt portion, and the headstock holds in the end cap, and connecting rod threaded connection is in round pin axle, and the end cap drives the connecting rod and rotates for the round pin axle during rotatory end cap, and when the cam was dialled and is turned round and be located the first position, the end cap was supported towards second butt portion and is pressed in.

The application further provides a fan, which comprises the telescopic pull rod mechanism.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a perspective view of the fan;

FIG. 2 is a perspective view of the fan with the telescoping pull rod mechanism removed;

FIG. 3 is a perspective view of the fan telescopic pull rod mechanism;

FIG. 4 is a perspective view of the fan telescopic pull rod mechanism at another angle;

FIG. 5 is a longitudinal sectional view of the fan;

FIG. 6 is an exploded view of the fan telescoping pull rod mechanism;

FIG. 7 is an enlarged cross-sectional view of a portion of the fan near the cam knob taken along the transverse axis of the link (with the cam knob in a first position);

FIG. 8 is an enlarged view of a portion of FIG. 6;

FIG. 9 is an enlarged view of a longitudinal section of the fan adjacent the first sleeve portion along the axis of the first shaft portion (with the tie rod retracted to the bottom);

FIG. 10 is an enlarged view of a longitudinal partial cross-section of the vicinity of the present fan cup along the axis of the first stem (draw bar top out);

FIG. 11 is a perspective view of the fan engaging portion and the fixing portion;

FIG. 12 is a perspective view of the fan end cap of the present invention.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 12, a fan includes a wheel 10, a housing 11, a plurality of blades 120 located in the housing 11, a first outer tube 13, a second outer tube 14, and a pull rod assembled to the first outer tube 13 and the second outer tube 14, wherein the pull rod includes a first rod 20 at least partially nested in the first outer tube 13 to be retractable along the first outer tube 13, and a second rod 21 at least partially nested in the second outer tube 14 to be retractable along the second outer tube 14, the first outer tube 13 has a first end 130 and a second end 131 opposite to each other, the second outer tube 14 has a third end 140 and a fourth end 141 opposite to each other, the fan further includes a semi-open socket 30 for locking the first rod 20, and a fixing portion 31 fixed to the second end 131, and the socket 30 is integrally connected to the corresponding fixing portion 31. The pull rod can be drawn out and retracted relative to the first outer tube 13 and the second outer tube 14, the first rod portion 20 is drawn out and retracted relative to the first outer tube 13, and the second rod portion 21 is drawn out and retracted relative to the second outer tube 14. The fan blades 120 form a roller 121.

The fan further comprises a first cross beam 40 for positioning the first outer tube 13 and the second outer tube 14, the first cross beam 40 is fixedly installed on the housing 11, the first outer tube 13 and the second outer tube 14 are respectively fixedly connected with the first cross beam 40, and the first outer tube 13 and the second outer tube 14 are combined together through the first cross beam 40. The first cross beam 40 is provided with a first sleeve part 400, a second sleeve part 401 and a first flange 402, the first sleeve part 400 and the second sleeve part 401 are spaced apart in the longitudinal direction of the first cross beam 40, the first end part 130 is nested in the first sleeve part 400, the first end part 130 is locked to the first sleeve part 400, the third end part 140 is nested in the second sleeve part 401, and the third end part 140 is locked to the second sleeve part 401. The first flange 402 connects the first sleeve portion 400 and the second sleeve portion 401, a part of the first flange 402 is sealed at one end of the first sleeve portion 400 to form a bottom wall 4000 of the first sleeve portion 400, the first end 130 is in contact with the bottom wall 4000 of the first sleeve portion 400, another part of the first flange 402 is sealed at one end of the second sleeve portion 401 to form a bottom wall 4010 of the second sleeve portion 401, and the third end 140 is in contact with the bottom wall 4010 of the first sleeve portion 400.

The fan further includes a first screw 150 and a second screw 151 for locking the first beam 40 to the housing 11, the first beam 40 is provided with a first screw hole 403 corresponding to the first screw 150 and a second screw hole 404 corresponding to the second screw 151, the first screw hole 403 and the second screw hole 404 are located between the first sleeve portion 400 and the second sleeve portion 401, the first screw hole 403 is relatively close to the first sleeve portion 400 and is far away from the second sleeve portion 401, and the second screw hole 404 is relatively close to the second sleeve portion 401 and is far away from the first sleeve portion 400. The first sleeve portion 400 is parallel to the second sleeve portion 401, and the first sleeve portion 400 and the second sleeve portion 401 are located at opposite ends in the longitudinal direction of the first cross member 40.

The fan further includes a third screw 152 for locking the first end portion 130 to the first sleeve portion 400, and a fourth screw 153 for locking the third end portion 140 to the second sleeve portion 401, wherein the third screw 152 extends into the first end portion 130, and the third screw 152 can block the first rod portion 20 on the retraction path of the first rod portion 20 to prevent the first rod portion 20 from further retracting. The fourth screw 153 extends into the third end 140, and the fourth screw 153 can block the second shaft 21 on the retraction path of the second shaft 21 to prevent the second shaft 21 from further retracting. When the pull rod is retracted, the third screw 152 blocks the first rod 20 to indicate that the first rod 20 is retracted to the bottom, and the fourth screw 153 blocks the second rod 21 to indicate that the second rod 21 is retracted to the bottom.

The fan further comprises a second cross beam 41, the pull rod further comprises a cross rod 22 connecting the first rod part 20 and the second rod part 21, the second cross beam 41 is located between the first cross beam 40 and the cross rod 22, the first outer tube 13 and the second outer tube 14 respectively penetrate through the second cross beam 41, and the second cross beam 41 is fixedly installed on the shell 11. The second beam 41 is fixed to the housing 11 by screws 154. The second cross member 41 is provided with a third sleeve portion 410 fitted outside the first outer pipe 13 and a fourth sleeve portion 411 fitted outside the second outer pipe 14, the third sleeve portion 410 and the fourth sleeve portion 411 are spaced apart in the longitudinal direction of the second cross member 41, the first outer pipe 13 penetrates the second cross member 41 via the third sleeve portion 410, and the second outer pipe 14 penetrates the second cross member 41 via the fourth sleeve portion 411. The third sleeve portion 410 is parallel to the fourth sleeve portion 411, and the third sleeve portion 410 and the fourth sleeve portion 411 are located at opposite ends of the second cross member 41 in the longitudinal direction. The second beam 41 is further connected with a third folded edge 412 and a fourth folded edge 413 which are opposite at intervals, the third folded edge 412 is connected with a third sleeve part 410 and a fourth sleeve part 411, the fourth folded edge 413 is connected with the third sleeve part 410 and the fourth sleeve part 411, the housing 11 is provided with a plurality of first positioning bulges 110 and a plurality of second positioning bulges 111, the first positioning bulges 110 and the second positioning bulges 111 are positioned between the third folded edge 412 and the fourth folded edge 413, the first positioning bulges 110 lean against the third folded edge 412 towards the direction far away from the fourth folded edge 413, and the second positioning bulges 111 lean against the fourth folded edge 413 towards the direction far away from the third folded edge 412; the first positioning protrusions 110 are arranged in a row, and the second positioning protrusions 111 are arranged in a row. Due to the design, the second beam 41 is accurately positioned on the housing 11 through the matching of the first positioning protrusion 110 and the second positioning protrusion 111 with the third folding edge 412 and the fourth folding edge 413.

The fan further includes a screw 154 for locking the second beam 41 to the housing 11, the second beam 41 is provided with two screw holes 414 corresponding to the screw 154, the housing 11 is provided with two screw posts 112 for locking the first screw 150 and the second screw 151, two screw posts 113 for locking the screw 154, and an air outlet 114. The third folding edge 412 and the fourth folding edge 413 are slightly expanded and deformed under the action of the opposite pressing force of the first positioning protrusion 110 and the second positioning protrusion 111, and the first positioning protrusion 110 and the second positioning protrusion 111 are respectively provided with a guide edge to guide the third folding edge 412 and the fourth folding edge 413 to be clamped on the peripheries of the first positioning protrusion 110 and the second positioning protrusion 111. The first outer tube 13 is perpendicular to the length direction of the second beam 41, and the length direction of the first beam 40 is parallel to the length direction of the second beam 41; the first outer tube 13 is parallel to the second outer tube 14, and the first rod portion 20 is parallel to the second rod portion 21 and the second outer tube 14.

The fixing portion 31 is cylindrical, and the fixing portion 31 is fitted outside the second end portion 131. The fan further includes a fifth screw 155, the fixing portion 31 is provided with a boss portion 310, the second end portion 131 is fixedly provided with a nut 1310, the nut 1310 is located in the boss portion 310, and the boss portion 310 is locked to the nut 1310 by the fifth screw 155 to lock the fixing portion 31 to the second end portion 131. Nut 1310 is welded to second end 131.

The fan further comprises a cam dial knob 50, a pin shaft 51, a connecting rod 52 connected with the pin shaft 51 and a pushing seat 53, wherein the cam dial knob 50 is provided with a cam part and a dial lever 500 integrally connected with the cam part, the pin shaft 51 is arranged at the cam part, the sleeving part 30 is provided with a first abutting part 300 and a second abutting part 301 which are opposite, the first abutting part 300, the second abutting part 301, the pushing seat 53 and the pin shaft 51 are sequentially distributed on the connecting rod 52, the sleeving part 30 locks the first rod part 20 when the cam dial knob 50 is positioned at a first position, and the sleeving part 30 releases the first rod part 20 when the cam dial knob 50 rotates from the first position to a second position by taking the pin shaft 51 as an axis; when the cam knob 50 rotates from the second position to the first position about the pin shaft 51, the cam portion directly or indirectly pushes the second abutting portion 301 to approach the second abutting portion 301, so that the cross-sectional area of the sleeve portion 30 is contracted to lock the pull rod. For the present embodiment, the cam knob 50 is rotated about 100 degrees around the pin 51 from the first position to the second position. The socket portion 30 is further provided with a C-shaped portion 302, the first abutting portion 300 is integrally connected to one circumferential end of the C-shaped portion 302, and the second abutting portion 301 is integrally connected to the other circumferential end of the C-shaped portion 302.

The abutting seat 53 comprises a first protruding portion 530 and a second protruding portion located on two opposite sides of the abutting seat 53, the first protruding portion 530 is at least partially embedded in the second abutting portion 301, the second protruding portion is at least partially embedded in the cam portion, the cam portion pushes the second abutting portion 301 to be close to the second abutting portion 301 through the abutting seat 53 when the cam toggle 50 rotates from the second position to the first position by taking the pin 51 as an axis, so that the cross-sectional area of the socket portion 30 is contracted to lock the pull rod, the cam toggle 50, the abutting seat 53 and the second abutting portion 301 are connected more tightly through the embedding fit, the relative position among the three parts is kept, and the user experience is improved. The second abutting portion 301 is provided with a receiving hole 3010, the link 52 penetrates through the receiving hole 3010 and the first protruding portion 530, the first protruding portion 530 is inserted into the receiving hole 3010, and the receiving hole 3010 can block the first protruding portion 530 from rotating around the axis of the link 52, so that the position of the abutting seat 53 relative to the second abutting portion 301 can be maintained. The first protrusion 530 has a polygonal cross section, and the receiving hole 3010 has a polygonal cross section matching the first protrusion 530, so as to prevent the first protrusion 530 from rotating around the axis of the link 52. The first protrusion 530 and the receiving hole 3010 have hexagonal cross sections.

The link 52 is perpendicular to the pin 51, the second protrusion includes a first portion 531 and a second portion 532 located on two opposite sides of the link 52 in the radial direction, the link 52 passes through between the first portion 531 and the second portion 532, the first portion 531 and the second portion 532 are respectively at least partially embedded between the first cam portion 501 and the second cam portion 502, and the push seat 53 blocks the cam knob 50 from rotating relative to the second abutting portion 301 about the link 52. When the cam knob 50 is about to rotate around the link 52, the first portion 531 and the second portion 532 are driven to rotate the first protrusion 530, and the first protrusion 530 is limited by the receiving hole 3010, so that the cam knob 50 is difficult to rotate around the link 52 relative to the second contact portion 301. The cam portion comprises a first cam portion 501 and a second cam portion 502 which are opposite, the connecting rod 52 extends partially into the space between the first cam portion 501 and the second cam portion 502 to be connected with the pin shaft 51, the first cam portion 501 is provided with a first shaft hole 503 corresponding to the pin shaft 51, the second cam portion 502 is provided with a second shaft hole 504 corresponding to the pin shaft 51, the first shaft hole 503 and the second shaft hole 504 are opposite in the axial direction of the pin shaft 51, and the second protruding portion is at least partially embedded between the first cam portion 501 and the second cam portion 502. The abutting seat 53 has a first rail concave surface 533 corresponding to the first cam portion 501 and a second rail concave surface 534 corresponding to the second cam portion 502, the first rail concave surface 533 and the second rail concave surface 534 are located on opposite sides of the second protrusion, the cam knob 50 is located between the first position and the second position, the first cam portion 501 slides along the first rail concave surface 533 and pushes the abutting seat 53 by abutting against the first rail concave surface 533, and the second cam portion 502 slides along the second rail concave surface 534 and pushes the abutting seat 53 by abutting against the second rail concave surface 534 during the rotation process between the first position and the second position. During rotation of the cam knob 50 from the first position to the second position, the first and second portions 531, 532 move relative to the cam knob 50 along the space between the first and second cam portions 501, 502.

The first portion 531 and the second portion 532 are located on two opposite sides of the connecting rod 52 in a first direction, and the first direction is perpendicular to the axial direction of the connecting rod 52 and the axial direction of the pin 51; when the cam knob 50 is in the second position, the pin 51 is partially received between the first and second portions 531 and 532. When the cam knob 50 is in the first position, the pin 51 is disengaged between the first portion 531 and the second portion 532. The first portion 531 is provided with a first concave surface 5310 which is concave in the direction away from the pin 51, the second portion 532 is provided with a second concave surface 5320 which is concave in the direction away from the pin 51, the first concave surface 5310 and the second concave surface 5320 are located on two opposite sides of the connecting rod 52 in the radial direction, the connecting rod 52 penetrates through the space between the first concave surface 5310 and the second concave surface 5320, and when the cam knob 50 is located at the second position, the pin 51 partially enters the space between the first concave surface 5310 and the second concave surface 5320. The first concave surface 5310 and the second concave surface 5320 can be matched with the pin 51 more, so that the pin 51 can be accommodated in a more adaptive part, and the space utilization is more compact. When the cam knob 50 is located at the first position, the pin 51 is separated from the space between the first concave surface 5310 and the second concave surface 5320. The radius of curvature of the first concave surface 5310 and the radius of curvature of the second concave surface 5320 are larger than the radius of curvature of the pin 51.

The fan further includes an elastic member 16 sleeved on the connecting rod 52, and an end cap 17 sleeved on the connecting rod 52, the abutting seat 53 has an abutting surface 535, the abutting surface 535 surrounds the connecting rod 52, one end of the elastic member 16 is located inside the first protrusion 530, the abutting surface 535 is located inside the first protrusion 530, and when the cam knob 50 is located at the first position, one end of the elastic member 16 abuts against the first abutting portion 300, and the other end abuts against the abutting surface 535. The elastic member 16 may be a spring. The link 52 is perpendicular to the abutment surface 535. The first abutting portion 300 is located between the end cap 17 and the second abutting portion 301, the connecting rod 52 includes a rod body 520 and a head seat 521 integrally connected to the rod body 520, the head seat 521 is accommodated in the end cap 17, the connecting rod 52 is in threaded connection with the pin shaft 51, the end cap 17 drives the connecting rod 52 to rotate relative to the pin shaft 51 when the end cap 17 is rotated, when the cam toggle 50 is located at the first position, the end cap 17 abuts against the first abutting portion 300 towards the second abutting portion 301, and the end cap 17 abuts against the first abutting portion 300 towards the second abutting portion 301 under the abutting of the head seat 521. The connecting rod 52 and the pin 51 can be further screwed together or disconnected by screwing the end cap 17. The cap 17 and the head 521 are respectively formed as nuts. The end cap 17 is provided with a barb portion 170 and a stopping portion 171, the head seat 521 is limited between the barb portion 170 and the stopping portion 171, when the cam toggle 50 is located at the first position, the end cap 17 is pressed against the first abutting portion 300 towards the second abutting portion 301, and the pushing seat 53 is pressed against the second abutting portion 301 towards the first abutting portion 300, so that the second abutting portion 301 and the first abutting portion 300 are close to each other. The end cap 17 has an accommodating cavity 172, the barb 170 is located in the accommodating cavity 172, the stopper 171 is in a ring shape surrounding the rod 520 of the connecting rod 52, the stopper 171 is located at one end of the accommodating cavity 172, and the stopper 171 is located between the first abutting portion 300 and the head seat 521. The stopping portion 171 is provided with a relief notch 1710 corresponding to the barb portion 170, and the relief notch 1710 can form a demolding opening for the barb portion 170, so that demolding molding of the barb portion 170 is facilitated. The projection of the relief notch 1710 along the axial direction of the link 52 covers the projection of the stopper 171 along the axial direction of the link 52.

The fan further includes another half-open sleeve portion 33 for locking the second rod portion 21, and another fixing portion 34 fixed to the fourth end portion 141, wherein each sleeve portion 30, 33 is integrally connected to the corresponding fixing portion 31, 34, i.e. each sleeve portion 30, 33 is integrally connected to the corresponding fixing portion 31, 34 by way of integral molding, but may also be integrally connected by way of gluing, etc. The fan further includes a first inner cylinder 35 nested in the second end portion 131, and a second inner cylinder (not shown) nested in the fourth end portion 141, the first inner cylinder 35 is integrally connected with the corresponding socket portion 30, the second inner cylinder is integrally connected with the corresponding socket portion 33, the first rod portion 20 penetrates through the first inner cylinder 35, the second rod portion 21 penetrates through the second inner cylinder, the first rod portion 20 is provided with a first stop member 200, the first inner cylinder 35 can block the first stop member 200 on the outward drawing route of the first rod portion 20 to prevent the first rod portion 20 from being drawn outward, the second rod portion 21 is provided with a second stop member 210, and the second inner cylinder can block the second stop member 210 on the outward drawing route of the second rod portion 21 to prevent the second rod portion 21 from being drawn outward. In this embodiment, the first stop member 200 and the second stop member 210 are snap rings, but may also be pins, protrusions, etc. When the pull rod is pulled out, the first inner cylinder 35 blocks the first stop member 200 to indicate that the first rod part 20 is pulled out to the top, and the second inner cylinder blocks the second stop member 210 to indicate that the second rod part 21 is pulled out to the top.

While the present invention has been described with reference to the particular illustrative embodiments, it will be understood by those skilled in the art that the present invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the present invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. The utility model provides a telescopic pull rod mechanism which characterized in that: the push rod comprises a pull rod, a semi-open sleeving part, a cam pulling knob, a pin shaft arranged in the cam part of the cam pulling knob, a connecting rod connected with the pin shaft, a pushing seat, a pull rod penetrating through the sleeving part, a first abutting part and a second abutting part which are opposite to each other and arranged in the sleeving part, the first abutting part, the second abutting part, the pushing seat and the pin shaft are sequentially distributed on the connecting rod, the sleeving part locks the pull rod when the cam pulling knob is positioned at a first position, the cam pulling knob releases the pull rod when rotating to a second position from the first position by taking the pin shaft as an axis, the pushing seat comprises a first protruding part and a second protruding part which are positioned at two opposite sides of the cam pulling knob, at least part of the first protruding part is embedded into the second abutting part, and at least part of the second protruding part is embedded into the.

2. The telescopic link mechanism of claim 1, wherein: the second abutting part is provided with an accommodating hole, the first protruding part is embedded into the accommodating hole, the connecting rod penetrates through the accommodating hole and the first protruding part, the cross section of the first protruding part is polygonal, and the cross section of the accommodating hole is matched with the polygon of the first protruding part so as to prevent the first protruding part from rotating by taking the axis of the connecting rod as a rotating axis.

3. The telescopic link mechanism of claim 2, wherein: the fixing part is nested outside the end part of the outer pipe; the fixing part is provided with a boss part, the end part of the outer tube is fixedly provided with a nut, the nut is positioned in the boss part, and the boss part is locked on the nut by a screw so as to lock the fixing part on the end part of the outer tube; the second fixing part is cylindrical and is nested outside the second end part; the sleeve joint part is also provided with a C-shaped part, the first abutting part is integrally connected to one end of the circumferential direction of the C-shaped part, the second abutting part is integrally connected to the other end of the circumferential direction of the C-shaped part, and the cam shifting knob is used for pushing the second abutting part to be close to the second abutting part by abutting against the pushing seat to enable the cross section area of the sleeve joint part to be contracted so as to lock the pull rod in the process of rotating from the second position to the first position by taking the pin shaft as an axis; the connecting rod is perpendicular to the pin shaft, the second protruding portion comprises a first portion and a second portion which are located on two opposite sides of the connecting rod in the radial direction, the connecting rod penetrates through the first portion and the second portion, the first portion and the second portion are at least partially embedded between the first cam portion and the second cam portion respectively, and the pushing seat blocks the cam shifting knob to rotate relative to the second abutting portion by taking the connecting rod as a shaft.

4. The telescopic link mechanism of claim 1, wherein: the connecting rod is perpendicular to the pin shaft, the cam part comprises a first cam part and a second cam part which are opposite, the connecting rod part extends into the space between the first cam part and the second cam part and is connected with the pin shaft, the first cam part is provided with a first shaft hole corresponding to the pin shaft, the second cam part is provided with a second shaft hole corresponding to the pin shaft, the first shaft hole and the second shaft hole are opposite in the axial direction of the pin shaft, and the second protruding part is at least partially embedded between the first cam part and the second cam part; the second protrusion includes a first portion and a second portion located on opposite sides of the link in a radial direction, the link passes through between the first portion and the second portion, and the first portion and the second portion are at least partially embedded between the first cam portion and the second cam portion, respectively.

5. The telescopic link mechanism of claim 4, wherein: the first part and the second part are positioned on two opposite sides of the connecting rod in a first direction, and the first direction is perpendicular to the axial direction of the connecting rod and the axial direction of the pin shaft; when the cam dial knob is located at the second position, the pin shaft part is accommodated between the first part and the second part.

6. The telescopic link mechanism of claim 4, wherein: the first part is provided with a first concave surface which is concave in the direction far away from the pin shaft, the second part is provided with a second concave surface which is concave in the direction far away from the pin shaft, the first concave surface and the first concave surface are positioned on two opposite sides of the connecting rod in the radial direction, the connecting rod penetrates through the first concave surface and the second concave surface, and when the cam is arranged at the second position, the pin shaft part is accommodated between the first concave surface and the second concave surface.

7. The telescopic link mechanism of claim 1, wherein: the connecting rod comprises a rod body and a head seat integrally connected to the rod body, the end cap is provided with a barb part and a stopping part, the head seat is accommodated in the end cap and limited between the barb part and the stopping part, and when the cam shifting knob is located at the first position, the end cap abuts against the first abutting part and abuts against the pushing seat to abut against the second abutting part.

8. The telescopic link mechanism of claim 7, wherein: the end cap is provided with an accommodating cavity, the barb part is positioned in the accommodating cavity, the stopping part is in an annular shape surrounding the connecting rod body and is positioned at one end of the accommodating cavity, and the stopping part is positioned between the first abutting part and the head seat; the stopping part is provided with a yielding notch corresponding to the barb part, and the axial projection of the stopping part along the connecting rod is covered by the yielding notch along the axial projection of the connecting rod.

9. The telescopic link mechanism of claim 1, wherein: still including the end cap of cover on the connecting rod, connecting rod perpendicular to round pin axle, the connecting rod includes the body of rod and an organic whole connects in the headstock of the body of rod, and first butt portion is located between end cap and the second butt portion, and the headstock holds in the end cap, and connecting rod threaded connection is in round pin axle, and the end cap drives the connecting rod and rotates for the round pin axle during rotatory end cap, and when the cam was dialled to turn round and is located the first position, the end cap was supported towards second butt portion and is pressed in.

10. A fan, characterized by: comprising a telescopic rod mechanism according to any of claims 1 to 9.

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