CN107191126B

CN107191126B - Curtain head

Info

Publication number: CN107191126B
Application number: CN201710523190.9A
Authority: CN
Inventors: 卢先锋; 杨士举; 范明
Original assignee: Ningbo Xianfeng New Material Co Ltd
Current assignee: Ningbo Xianfeng New Material Co Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2023-02-03
Anticipated expiration: 2037-06-30
Also published as: CN107191126A

Abstract

The invention provides a curtain head, comprising: the base is fixedly arranged, and a mandrel is arranged on the base; the rear end of the brake disc is provided with an umbrella-shaped inclined plane, the brake disc penetrates through the mandrel, and the base limits the brake disc to rotate when the brake disc is in abutting connection with the base; the pipe plug is used for driving the curtain reelpipe to rotate and is in linkage connection with the brake disc; the movable wedge block is movably arranged on the umbrella-shaped inclined plane of the brake disc and is positioned between the pipe plug and the base; the ball disc is sleeved outside the brake disc and is in linkage connection with the movable wedge block, and the movable wedge block is pressed when the ball disc rotates, so that the movable wedge block pushes the brake disc to be separated from the base; the invention has the beneficial effects that: the head can realize the self-locking function under the structure without the torsional spring, so that the curtain is more stable to open and close, larger friction force cannot be generated, labor is saved when a user pulls the curtain, and the head is stable and reliable in use.

Description

Curtain head

Technical Field

The invention belongs to the technical field of curtain drivers, and relates to a curtain head.

Background

Curtains are arranged in places such as offices, hotels, restaurants, classrooms, families and the like, the curtain is provided with a bead pulling driver, and the curtain rolling pipe can rotate through the bead pulling driver, so that the effect of putting down or retracting the curtain is achieved.

The bead-pulling driver (or called as a head) of the manual bead-pulling curtain has simple structure and convenient use, so the bead-pulling driver is widely applied.

The detent function of a typical manual pull bead driver is accomplished by one or more self-locking torsion springs on a spindle that holds the driver stationary. Due to the dead weight of the rolling screen fabric and the rolling screen lower rod, the torsion spring is always in a pre-tightening state of completely bearing the weight.

In addition, the torsion spring can not completely loosen and rotate when the curtain is unfolded or folded, so that when the curtain is folded, the dead weight of the fabric and the lower rod of the roller shutter is overcome, and the friction force generated by the torsion spring and the core shaft when the torsion spring rotates is also overcome.

In order to overcome the defects of the existing bead pulling driver for manually pulling the bead curtain, a curtain driver which does not need a torsion spring for self-locking, is reliable in braking and saves labor when in use is needed.

Disclosure of Invention

The invention aims to provide a curtain head, aiming at the problems in the prior art.

The purpose of the invention can be realized by the following technical scheme: a window covering head comprising:

the base is fixedly arranged, and a mandrel is arranged on the base;

the rear end of the brake disc is provided with an umbrella-shaped inclined plane, the brake disc penetrates through the mandrel, and when the brake disc is in abutting connection with the base, the base limits the brake disc to rotate;

the pipe plug is used for driving a curtain reelpipe to rotate, and the pipe plug is in linkage connection with the brake disc;

the movable wedge block is movably arranged on the umbrella-shaped inclined plane of the brake disc and is positioned between the pipe plug and the base;

the bead disk is sleeved at the outer part of the brake disk and is in linkage connection with the movable wedge block, and the bead disk presses the movable wedge block when rotating, so that the movable wedge block pushes the brake disk to be separated from the base.

Preferably, be provided with the inner chamber on the stopcock and the rear end of stopcock has the disc terminal surface, be provided with the elastic component in the inner chamber, the brake disc wears to establish in the inner chamber, the one end of elastic component is contradicted in the inner chamber the other end is contradicted on the preceding terminal surface of brake disc, thereby will the brake disc is contradicted on the base.

Preferably, the movable wedge block is provided with a chamfer, a magnetic column groove, a sliding surface and a sliding groove, the sliding surface is U-shaped and is used for being in contact connection with the inner ring of the bead disk, the chamfer is in contact connection with the umbrella-shaped inclined surface, the magnetic column groove is internally provided with a magnetic column, the magnetic column corresponds to the inner ring of the bead disk, and the sliding groove faces the pipe plug.

Preferably, the inner ring of the ball disc is provided with a bulge corresponding to the movable wedge block, and the bulge is in abutting connection with the sliding surface.

Preferably, a sliding boss is arranged on the disc-shaped end face, the sliding boss is in abutting connection with the sliding groove, and when the sliding face is extruded by the protrusion, the movable wedge block slides along the sliding boss.

Preferably, a plurality of rotating pieces are uniformly spaced and annularly distributed on the disc-shaped end face, and the protrusion and the movable wedge block are located between two adjacent rotating pieces.

Preferably, a magnetic strip penetrates through the protrusion, and the magnetic strip is connected with the magnetic column through magnetic force.

Preferably, a plurality of ribs are uniformly distributed in the inner cavity along the axial direction, and a plurality of strip-shaped grooves matched with the ribs are formed in the front end of the brake disc, so that the brake disc can axially move along the ribs.

Preferably, the rear end face of the base is provided with a base magnetic sheet, the brake disc is provided with a brake disc magnetic sheet, and the base magnetic sheet is connected with the brake disc magnetic sheet through magnetic force.

Preferably, the base is provided with a ratchet arranged around the mandrel; the bottom of the brake disc is provided with brake teeth, and when the brake disc is in interference connection with the base, the brake teeth are meshed with the ratchet teeth, so that the brake disc is limited to rotate.

Compared with the prior art, the invention has the beneficial effects that:

1. the head can realize the self-locking function under the structure without the torsional spring, so that the curtain is more stable to open and close, larger friction force cannot be generated, labor is saved when a user pulls the curtain, and the curtain is stable and reliable to use.

2. The elastic piece can give the elasticity of brake disc to make brake disc and base locking together, thereby play effectual auto-lock effect.

3. The movable wedge block is provided with a chamfer, a magnetic column groove, a sliding surface and a sliding groove, so that the movable wedge block can move along a set direction through the rotation of the ball disc, the brake disc is pushed, and the movable wedge block can be reset through the assistance of magnetic force.

4. Through the effect of the sliding surface on the protrusion and the movable wedge block, the self-locking and unlocking effects of the base and the pipe plug can be realized through the rotation of the ball disc, the structure is simple and effective, and the self-locking and unlocking effects are very smooth and labor-saving.

5. The sliding groove is matched with the sliding boss, so that the movable wedge block can slide along the direction of the sliding boss, the movement track of the movable wedge block can be effectively ensured, and the movable wedge block can push the brake disc along the correct direction.

6. The movable wedge block can be assisted to reset by the magnetic attraction effect of the magnetic column and the magnetic strip.

Drawings

FIG. 1 is a schematic view of a window covering head of the present invention;

FIG. 2 is a schematic view of the positions of the ball disk, the brake disk and the movable wedge of the present invention;

FIG. 3 is an exploded view of the curtain head of the present invention;

FIG. 4 is a schematic view of an assembly structure of the curtain head of the present invention;

FIG. 5 is a block diagram of a window covering head of the present invention;

FIG. 6 is a schematic structural view of a plug according to the present invention;

FIG. 7 is a front side view of the brake disc of the present invention;

FIG. 8 is a rear side view of the brake rotor of the present invention;

FIG. 9 is a schematic front side view of the movable wedge of the present invention;

fig. 10 is a rear side view schematically illustrating the construction of the movable wedge according to the present invention.

In the figure, 100, the base; 110. a mandrel; 120. a base magnetic sheet; 130. a ratchet; 200. a brake disc; 210. an umbrella-shaped inclined plane; 220. a strip-shaped groove; 230. a brake disc magnet sheet; 240. a brake tooth; 300. a pipe plug; 310. an inner cavity; 311. reinforcing wires; 320. a disk-shaped end face; 321. sliding the boss; 322. a rotating sheet; 330. an elastic member; 400. a movable wedge block; 410. a chamfer plane; 420. a magnetic pole slot; 430. a sliding surface; 440. a chute; 500. a bead disk; 510. a protrusion; 520. a magnetic strip.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3, 4 and 5, a curtain head, also called a curtain driver, is applied to a curtain to drive a curtain roller to rotate, thereby spreading or collecting the curtain.

The driver includes: the base 100, the brake disc 200, the movable wedge block, the bead disc 500 and the pipe plug are different from a traditional manual bead pulling driver in that the overall structure is more reasonable and very ingenious, the brake disc 200 and the base 100 are locked to achieve the purpose of self-locking, and the self-locking is relieved through ingenious connection of the movable wedge block, the bead disc 500 and the brake disc 200, so that the defect that a traditional braking head is always in a pre-tightening state of completely bearing the weight through a torsion spring can be overcome.

The base 100 is fixedly arranged, and a mandrel 110 is arranged on the base 100; the base 100 is actually the outermost part of the headpiece, and like an end cap, is often fixed and cannot rotate.

The brake disc 200 is a tubular structure having a shaft hole, and one end of the brake disc corresponding to the base 100 is a rear end, and the rear end is provided with an umbrella-shaped inclined surface 210; it is also worth noting here that the rear end of the brake disc 200 is actually a disc-shaped end surface on which the umbrella-shaped inclined surface 210 is located.

The brake disc 200 is arranged on the mandrel 110 in a penetrating manner, and when the brake disc 200 is in interference connection with the base 100, the base 100 limits the brake disc 200 to rotate; it should be noted here that the brake disc 200 plays a braking role, and in the brake head, it is linked with the pipe plug, that is, when the brake disc 200 cannot rotate, the pipe plug cannot rotate, thereby playing a self-locking role.

The pipe plug is in a plug-shaped structure with a hole, the rear end of the pipe plug is provided with a disc-shaped end surface, and the front end of the pipe plug can be plugged into the hole of the curtain roller pipe and is used for driving the curtain roller pipe to rotate; structurally, the tubular end of the pipe plug is provided with a plurality of clamping grooves which can be clamped in the curtain rolling pipe, so that the pipe plug and the curtain rolling pipe are fixed in the circumferential direction; the pipe plug can be connected with the curtain roller pipe, and finally, the curtain roller pipe is rotated by driving the pipe plug to rotate in the actual working process.

The pipe plug is in linkage connection with the brake disc 200, and the brake disc 200 can move axially in the pipe plug; when the brake disc 200 collides with the base 100 and cannot rotate, the pipe plug can be locked and cannot rotate, and when the brake disc 200 is separated from the base 100, the brake disc 200 can rotate together with the pipe plug.

It is also worth noting here that the plug is actually fitted over the tubular end of the brake disc 200, that is, it is actually equivalent to being fitted over the mandrel 110, the brake disc 200 being able to move axially in the plug.

The movable wedge is a pushing member for driving the brake disc 200 to move axially in the plug, and more precisely, a pushing member capable of separating the brake disc 200 from the base 100, and is movably disposed on the umbrella-shaped inclined surface 210 of the brake disc 200, and the movable wedge is located between the plug and the base 100.

It should be noted here that the number of the movable wedges is preferably six, and they are uniformly arranged in a ring shape on the umbrella-shaped inclined surface 210 of the brake disc 200, similar to a ring, and surround the spindle 110.

The bead disk 500 is sleeved outside the brake disk 200 and is in linkage connection with the movable wedge blocks, specifically, the six movable wedge blocks abut against the inner ring of the bead disk 500, and the bead disk 500 is sleeved outside the brake disk 200.

When the ball disc 500 rotates, the movable wedge is pressed, so that the movable wedge pushes the brake disc 200 to separate from the base 100; it is also worth noting here that the ball pan 500 is actually also in interlocking connection with the pipe plug, being able to bring the pipe plug into rotation when it is rotated.

Structurally, the bead plate 500 is a component directly driven by a user, that is, the user rotates the bead plate 500 by pulling the pull bead, when the bead plate 500 rotates, the base 100 is pushed to be separated from the brake disc 200 by the movable wedge, at this time, the self-locking state is released, and at this time, the bead plate 500 continues to drive the pipe plug to rotate, so that the curtain roller pipe rotates.

The connecting structure can drive the pipe plug to rotate when the bead disc 500 separates the brake disc 200, and is very ingenious and practical.

As shown in fig. 1, 3, 4 and 6, on the basis of the above embodiment, the plug is provided with a cavity and the rear end of the plug has a disc-shaped end surface, specifically, the plug 300 is similar to a tubular structure, the cavity 310 extends through the plug 300, and the disc-shaped end surface 320 at the rear end of the cavity 310 is actually an annular structure surrounding the rear end of the cavity 310.

Be provided with elastic component 330 in the inner chamber 310, brake disc 200 wears to establish in the inner chamber 310, the one end of elastic component 330 is contradicted in the inner chamber 310 the other end is contradicted on the front end face of brake disc 200, thereby with brake disc 200 is contradicted on base 100.

Briefly, the elastic member 330 can provide an elastic force to the brake disc 200 so that the brake disc can be abutted against the base 100, and it is worth mentioning that the elastic member 330 may be preferably a spring.

In actual operation, when the ball disc 500 stops rotating, the elastic member 330 gives an elastic force to the brake disc 200, so that the brake disc 200 is locked with the base 100, and when the ball disc 500 rotates, the brake disc 200 overcomes the elastic force of the elastic member 330, so as to be separated from the base 100.

As shown in fig. 3, 4, 9, and 10, in addition to the above-mentioned embodiments, the movable wedge 400 is provided with a chamfer 410, a magnetic pillar groove 420, a sliding surface 430, and a sliding groove 440, and it should be noted here that a plurality of movable wedges 400 are annularly arranged, wherein the chamfer 410 is a lower end surface of the movable wedge 400, the magnetic pillar groove 420 penetrates from a front end surface to a rear end surface of the movable wedge 400, the sliding surface 430 is an upper end surface of the movable wedge 400, and the sliding groove 440 is located on a rear end surface of the movable wedge 400 and is opened from top to bottom.

The sliding surface 430 is U-shaped for interference connection with the inner ring of the ball disc 500, the center of the sliding surface 430 is recessed downward, and the inner ring of the ball disc 500 actually has a plurality of protrusions 510, and when the ball disc 500 rotates, the protrusions 510 slide from the recessed portion of the sliding surface 430 to the protrusions 510 at both sides, and press the movable wedge 400 to move downward, thereby pressing the umbrella-shaped inclined surface 210 of the brake disc 200.

The chamfered surface 410 is in interference contact with the umbrella-shaped inclined surface 210, so that the movable wedge 400 pushes the brake disc 200, in short, when the movable wedge 400 moves toward the core shaft 110, the chamfered surface 410 pushes the brake disc 200, so that the brake disc 200 moves toward the inner cavity 310.

The magnetic column is arranged in the magnetic column groove 420 and corresponds to the inner ring of the ball disc 500, specifically, the magnetic column groove 420 is located below the concave part of the sliding surface 430, and the purpose of arranging the magnetic column is to enable the protrusion 510 of the ball disc 500 to be attracted by the magnetic column when the ball disc is not rotated, so that the protrusion 510 is located in the concave part of the sliding surface 430, and the brake disc 200 and the base 100 can be smoothly connected together in an abutting mode.

The sliding groove 440 is disposed toward the pipe plug 300, and it should be noted that the movable wedge 400 is attached to the end of the pipe plug 300 to move up and down, so that the sliding groove 440 needs to be disposed on the movable wedge 400 to facilitate the sliding of the movable wedge 400, and in short, the movable wedge 400 can slide along a set direction through the sliding groove 440, so that the movable wedge 400 can more smoothly and reliably push the brake disc 200.

As shown in fig. 2, 3, 5 and 10, on the basis of the above embodiment, the inner ring of the ball tray 500 is provided with the protrusions 510 corresponding to the movable wedges 400, the number of the protrusions 510 is the same as that of the movable wedges 400, and the protrusions 510 are arranged in a one-to-one correspondence, the protrusions 510 are connected with the sliding surface 430 in an interference manner, the protrusions 510 are located in the recesses of the sliding surface 430 when the ball tray 500 is not rotated, and the protrusions are slid to the sides of the sliding surface 430 when the ball tray 500 is rotated.

Through the protrusion 510 and the sliding surface 430 on the movable wedge 400, the self-locking and unlocking effects of the base 100 and the pipe plug 300 can be realized through the rotation of the ball disc 500, the structure is simple and effective, and the self-locking and unlocking effects are very smooth and labor-saving.

As shown in fig. 3, 6 and 9, in the above embodiment, the disk-shaped end surface 320 is provided with the sliding bosses 321, the number of the sliding bosses 321 is equal to the number of the movable wedges 400, the positions of the sliding bosses correspond to those of the movable wedges 400, and the sliding bosses 321 are columnar and are arranged along the radial direction of the disk-shaped end surface 320.

The sliding boss 321 is in interference connection with the sliding groove 440, and when the sliding surface 430 is pressed by the protrusion 510, the movable wedge 400 slides along the sliding boss 321, so that the moving track of the movable wedge 400 can be effectively ensured, and the movable wedge 400 can push the brake disc 200 in the correct direction.

As shown in fig. 3 and fig. 6, on the basis of the above embodiment, a plurality of evenly spaced and annularly distributed rotating pieces 322 are disposed on the disk-shaped end surface 320, and the protrusion 510 and the movable wedge 400 are located between two adjacent rotating pieces 322.

It should be noted here that the bead plate 500 actually abuts against the disk-shaped end surface 320, and the rotating plate 322 is located on the inner ring of the bead plate 500, so as to fix the whole bead plate 500 on the disk-shaped end surface 320, which is linked with the tube plug 300 through the rotating plate 322, and the protrusion 510 is located between the two rotating plates 322, that is, the bead plate 500 actually rotates a certain angle without driving the tube plug 300, and when the rotation stroke of the bead plate 500 exceeds the distance between the two rotating plates, the protrusion 510 and the rotating plate 322 drive the tube plug 300 to rotate.

As shown in fig. 3 and 5, in addition to the above embodiments, a magnetic strip 520 is inserted into the protrusion 510, the magnetic strip 520 is magnetically connected to the magnetic pillar, and the magnetic strip 520 arranged in the protrusion 510 can be magnetically connected to the magnetic pillar in the magnetic pillar groove 420, so that when no external force is applied to the bead tray 500, the protrusion 510 moves to the recess of the sliding surface 430, i.e., the upper side of the magnetic pillar, under the influence of magnetic force; and the movable wedge 400 can be assisted to reset by the magnetic attraction effect of the two.

As shown in fig. 6, on the basis of the above embodiment, a plurality of ribs 311 are uniformly distributed in the inner cavity 310 along the axial direction, and a plurality of bar-shaped grooves 220 matched with the ribs 311 are formed at the front end of the brake disc 200, so that the brake disc 200 can move along the axial direction of the ribs 311.

The arrangement of the rib lines 311 and the strip-shaped grooves 220 enables the brake disc 200 to move axially, specifically, the brake disc 200 can move back and forth in the inner cavity 310 smoothly, and the function of locking the brake disc 200 can be achieved, so that the brake disc 200 cannot rotate in the inner cavity 310.

As shown in fig. 3, in the above embodiment, a base magnetic piece 120 is provided on a rear end surface of the base 100, a brake disk magnetic piece 230 is provided on the brake disk 200, and the base magnetic piece 120 and the brake disk magnetic piece 230 are connected by magnetic force.

Through the base magnetic sheet 120 and the brake disc magnetic sheet 230, a magnetic attraction effect can be generated between the base 100 and the brake disc 200, so that the base 100 and the brake disc 200 can be more reliably connected, and cannot be easily separated, only when the thrust generated by the movable wedge 400 is greater than the magnetic force, the brake disc 200 can be pushed open, and thus, the reliability of self-locking can be effectively ensured.

As shown in fig. 3, 5 and 7, on the basis of the above embodiment, the base 100 is provided with a ratchet 130 disposed around the mandrel 110; the brake disk 200 is provided with braking teeth 240 at the bottom thereof, and when the brake disk 200 is in interference contact with the base 100, the braking teeth 240 are engaged with the ratchet teeth 130, thereby restricting the rotation of the brake disk 200.

The ratchet 130 and the braking teeth 240 can make the base 100 and the brake disc 200 be clamped together, and more precisely, can limit the brake disc 200 from rotating, when the ratchet 130 is engaged with the brake disc 200, the brake disc 200 can be clamped because the base 100 is fixed, so that the brake disc 200 can be very reliably limited.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A window covering head, comprising:

the base is provided with a mandrel;

the pipe plug is used for driving the curtain roller pipe to rotate, and the pipe plug is in linkage connection with the brake disc;

the bead disc is sleeved on the brake disc and is in linkage connection with the movable wedge block, and the bead disc presses the movable wedge block when rotating, so that the movable wedge block pushes the brake disc to be separated from the base;

the pipe plug is provided with an inner cavity, the rear end of the pipe plug is provided with a disc-shaped end face, an elastic piece is arranged in the inner cavity, the brake disc is arranged in the inner cavity in a penetrating mode, one end of the elastic piece abuts against the inner cavity, the other end of the elastic piece abuts against the front end face of the brake disc, and therefore the brake disc abuts against the base;

the movable wedge block is provided with a diagonal plane, a magnetic column groove, a sliding plane and a sliding groove, the sliding plane is in abutting connection with the inner ring of the bead disk, the diagonal plane is in abutting connection with the umbrella-shaped inclined plane, a magnetic column is arranged in the magnetic column groove and corresponds to the inner ring of the bead disk, and the sliding groove is arranged towards the pipe plug;

the inner ring of the ball disc is provided with a bulge corresponding to the movable wedge block, and the bulge is in abutting connection with the sliding surface; the bulge is positioned on the concave part of the sliding surface when the ball disc does not rotate; when the ball disc rotates, the bulge slides to the side part of the sliding surface, pushes the movable wedge block to move towards the direction of the mandrel, and pushes the brake disc through the inclined cutting surface, so that the brake disc moves towards the inner cavity;

and a sliding boss is arranged on the disc-shaped end face and is in abutting connection with the sliding groove, and when the sliding surface is extruded by the protrusion, the movable wedge block slides along the sliding boss.

2. The window covering head as defined in claim 1, wherein: the disc-shaped end face is provided with a plurality of rotating pieces which are evenly spaced and distributed in an annular shape, and the protrusion and the movable wedge block are located between two adjacent rotating pieces.

3. The window covering headpiece of claim 1, wherein: the magnetic strip penetrates through the bulge, and the magnetic strip is connected with the magnetic column through magnetic force.

4. The window covering head of claim 2, wherein: a plurality of rib lines are uniformly distributed in the inner cavity along the axial direction, and a plurality of strip-shaped grooves matched with the rib lines are formed in the front end of the brake disc, so that the brake disc can move along the axial direction of the rib lines.

5. The window covering head as defined in claim 1 or 4, wherein: the brake disc is characterized in that a base magnetic sheet is arranged on the rear end face of the base, a brake disc magnetic sheet is arranged on the brake disc, and the base magnetic sheet is connected with the brake disc magnetic sheet through magnetic force.

6. The window covering head of claim 5, wherein: the base is provided with ratchets arranged around the mandrel; the bottom of the brake disc is provided with brake teeth, and when the brake disc is in abutting connection with the base, the brake teeth are meshed with the ratchet teeth, so that the brake disc is limited to rotate.