A kind of clutch being applied on intelligent door lock
Technical field
The present invention relates to a kind of clutch being applied on intelligent door lock.
Background technology
The clutch of circulation is varied on the market, with the most general be exactly the rotation by motor, by rotatablely moving and be transformed into rectilinear motion after the train of reduction gears of associated, the transformation of this motion is all finally to realize by the relative motion of rotating shaft and spring.
As the conventional clutch in Fig. 1 ~ 3, it mainly comprises base 1, cover plate 2, motor 3, rotating shaft 7, spring 8, rectilinear motion part 9 and the train of reduction gears being made up of driving gear 4, driven gear 5, reduction gearing 6, motor 3 and rotating shaft 7 are parallel to the both sides that are arranged on base 1 of base 1, be positioned at train of reduction gears rear, driving gear 4 is arranged on the output shaft of motor 3, driven gear 5 is arranged on the front end of rotating shaft 7, reduction gearing 6 is arranged on base 1 front portion by an alignment pin, three gears are positioned at same one end of base 1, reduction gearing 6 has the initiative between gear 4 and driven gear 5, connect driving gear 4 and driven gear 5 and carry out transmission, rectilinear motion part 9 is sleeved on rotating shaft 7, spring 8 is also sleeved on rotating shaft 7, and be positioned at rectilinear motion part 9, after spring 8 two ends pin bendings, radially stretch out, hang on the rectilinear motion part 9 that is positioned at spring 8 two ends, outside rectilinear motion part 9 rear end protuberate basic units 1, rotating shaft 7 is also radially interspersed with a pin, pin two ends pass spring 8, cover plate 2 covers on base 1, form box structure protection internal part and avoid extruding together with base 1.
Motor 3 can forward also can reverse, and is mainly decided by the turn signal receiving. In the time that motor 3 rotates, driving gear 4 on drive motor 3, driving gear 4 drives driven gear 5 and then driven rotary axle 7 by reduction gearing 6 again, and rotating shaft 7 is when rotated, play the also and then rotation of pin on rotating shaft 7, being rotated in the spiral being formed by spring 8 of pin carried out. Because spring 8 two ends pin bending straight lines are drawn and hung on rectilinear motion part 9, limit spring 8 and can not rotate. In the time that pin rotates on spring 8, spring 8 can only do the rectilinear motion that advances, retreats along with spiral along rotating shaft 7, and the action that drives rectilinear motion part 9 to regain or stretch out.
Conventional clutch in use runs into following problem: 1), due to the characteristic of product, rotating shaft diameter is not too large, generally in 3-5mm left and right, and interspersed pin thereon, by punching pin is thrown on axle, processing technology bothers very much. Once as the pin-and-hole on axle occurs gap with the cooperation of pin, pin will drop out, if both interference fit are bigger than normal, be difficult to assembling. It is less than normal that the diameter of axle has also limited the diameter of pin in addition. Above problem causes and is difficult in process of production control and in use very unstable, easily breaks down.
2) spring is to convert straight-line critical component to by rotatablely moving, for restraining spring can be along with rotating shaft rotates, designer is all identical to carry out bending at the two ends of spring pin and tangles rectilinear motion part, to allow the thrust of spring on rectilinear motion part. The wire diameter of spring itself can not be too small or excessive, and it is motionless that the too small meeting of spring wire diameter causes power to push away not, and the excessive meeting of spring wire diameter causes the excessive motor of resistance to drive, therefore the wire diameter of spring is general all in the scope of 0.25-0.4mm. The spring of little wire diameter like this, after the pin bending of two ends, can produce permanent stress injury at bending part, and in use this is a very large potential safety hazard.
Be that a point contacts because pin interacts with spring, and spring bending position is just in time also in contact range. In the time that rotating shaft drives realization to rotatablely move by motor, the contact meeting of point type more easily causes heating, wearing and tearing, and the problem the most easily occurring is to break in spring bending position. In the time breaking in two bending positions on spring, spring will rotate along with rotating shaft, cannot complete the straight-line conversion that rotatablely moves, and whole mechanism cannot normally move again.
3) said mechanism is to install concentratedly in a box body being made up of base and cover plate. Traditional assembling mode comparatively bothers, and rotating shaft will go to install through base, for the position of restriction rotating shaft, also needs to use collar that rotating shaft is stuck in box body.
In addition, cover after cover plate completing the assembling of each parts on base, because box body cannot form a perimeter support, in use, as cover plate pressurized is easy to kill the accessory in box body. At present be mainly to adopt plastics to do box body on the market, whole clutch is that the corresponding position that is directly placed on smart lock is pushed down by product lid above. Now often occur that plastic deformation or product lid distortion build-up of pressure is excessive and kill the problem that the part of box body inside is joined, make the clutch cannot normal operation, cause product quality problem.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of clutch of better quality.
It is as follows that the present invention realizes the technical scheme that its goal of the invention takes: a kind of clutch being applied on intelligent door lock, it comprises base, cover plate, cover plate covers on base, the motor, rotating shaft, spring, rectilinear motion part and the train of reduction gears that on base, are provided with;
Motor drives the forward and reverse rotation of rotating shaft by train of reduction gears, and with the forward and reverse rotation of rotating shaft, spring does the rectilinear motion that advances or retreat along rotating shaft, and drives the rear end of rectilinear motion part regain or stretch out;
Described rotating shaft be provided with one section with spring adaptation, projection thread, described spring fitting is in the threaded section of rotating shaft, straight the drawing of two ends pin of spring, hangs on the rectilinear motion part that is positioned at spring side.
Be to carry out point type by pin and spring to contact with respect to rotating shaft in prior art, contact thereby adopt thread can make rotating shaft and spring carry out linearity in the present invention, to increase the contact area of rotating shaft and spring, reduce wearing and tearing, reduce heating; Both ends of the spring pin is straight draws, and hangs on the rectilinear motion part that is positioned at spring side, avoids having bending in the place contacting with rotating shaft, is conducive to extend the service life of spring.
As improvement of the present invention, described base comprises side plate and the middle dividing plate of base plate, periphery, described side plate and dividing plate form on base for supporting the brace table of cover plate, described side plate and dividing plate are at both sides and anterior three installation cavitys that are respectively used to hold described motor, rectilinear motion part, train of reduction gears that cross of base plate, the surrounding of described installation cavity has brace table, to form omnidirectional support in the surrounding of motor, rectilinear motion part, train of reduction gears, effectively reduce cover plate pressurized and cause the generation of the stuck problem of interior fittings.
As a further improvement on the present invention, the front side board of described base is by the dismountable base front end that is fixed on of connector, between the installation cavity of described rectilinear motion part and the installation cavity of train of reduction gears by together with dividing plate separate, this dividing plate top has a breach, the installation cavity that enters train of reduction gears is passed in rotating shaft front portion from this breach, this breach forms the front restitope of rotating shaft, this breach is made up of two U-shaped grooves, be positioned at U-shaped groove above and be the mouth that tightens that is positioned at U-shaped groove below, this tightens mouth and is configured for a bayonet socket that stops rotating shaft to move forward, the installation cavity rear portion of described rectilinear motion part is provided with the rear restitope of rotating shaft, rear restitope end face is provided with U-shaped breach, the side plate at rear restitope rear is configured for stoping the baffle plate moving after rotating shaft, the relevant position of described cover plate is provided with for coordinating with U-shaped breach and two described U-shaped grooves the arc bayonet socket that clamps rotating shaft, the both sides of the side plate at described rear restitope and rear thereof all have for allowing the therefrom room of protuberate basic unit, rectilinear motion part rear end. so, rotating shaft when mounted, need not be through operations such as base and cover collars, and rotating shaft is putting after rectilinear motion part, only need directly put into the correct position of base.
In order to facilitate the installation of rotating shaft on rectilinear motion part, the present invention also improves the structure of rectilinear motion part, the spring cavity of described rectilinear motion part front portion is the square tubular that a side is opened wide, comprise front end face, rear end face and a side, rear end face is provided with the circular hole passing for rotating shaft, front end face is laterally provided with a groove away from a side of spring cavity side, the otch that this groove is gone out by the just right round perforate of circular hole on position and rear end face with from the middle part crosscut of circle perforate circumference forms, spring cavity side is provided with a square port, after straight the drawing of two ends pin of spring, pass this square port, after the bending of end, hang over square port edge, away from the spin axis space of rotating shaft.
As optional embodiment of the present invention, between the installation cavity of described motor and the installation cavity of train of reduction gears also by together with dividing plate separate, this dividing plate top has a U-shaped breach, the output shaft of motor passes the installation cavity that enters train of reduction gears from this U-shaped breach, motor main body is resisted against on the edge of these U-shaped breach both sides and stops its migration, the installation cavity rear portion of motor is provided with arc saddle, the side plate of motor rear side is provided with connection jaws, the relevant position of described cover plate is provided with the arc bayonet socket for clamping motor main body, also be provided with for stop for keeping out at motor body rear face the curved baffle moving after motor after cover cap is on base.
The rear end face of the installation cavity of described train of reduction gears is the dividing plate between the installation cavity in train of reduction gears and the installation cavity of rectilinear motion part and the installation cavity of motor, the front end face of the installation cavity of described train of reduction gears is the front side board of base, and described train of reduction gears is made up of driving gear, driven gear and reduction gearing,Driving gear is arranged on the output shaft of motor, driven gear is arranged on the front end of rotating shaft, reduction gearing is sleeved on an alignment pin, reduction gearing has the initiative between gear and driven gear, connect driving gear and driven gear and carry out transmission, described alignment pin one end is inserted on the rear end face of installation cavity of described train of reduction gears, the other end is inserted on the front end face of installation cavity of described train of reduction gears, the front end of described rotating shaft is also inserted on the front end face of installation cavity of described train of reduction gears, this mounting means of alignment pin of the present invention and rotating shaft, supporting and location pin and rotating shaft better, the shaft concentricity that ensures alignment pin and rotating shaft is not crooked, also be more conducive to ensure the precision of the centre-to-centre spacing between alignment pin and rotating shaft.
For the ease of installation of the present invention, the present invention has also done following improvement, between the front and rear end of the installation cavity of described train of reduction gears, be all provided with locating dowel and the locating hole for coordinating installation between the dividing plate between the installation cavity of described rectilinear motion part and the installation cavity of described motor and described cover plate.
The back side of described base plate is provided with a screw and two locating dowels for clutch is installed, three's distribution triangular in shape. When locating dowel is clutch installation, play the role of positioning herein, make clutch that rear position is installed and keep stable not off normal.
The position that cover plate is positioned at the installation cavity top of train of reduction gears is provided with a square aperture, is to stay enough spaces to the rotation of gear herein, avoids interfering with the rotation of gear.
The both sides of the edge of described cover plate are also provided with the grab of downward protrusion, and the relevant position, outside of the side plate of base both sides is provided with the button bit coordinating with this grab.
With respect to prior art, the present invention mainly has following beneficial effect: 1) the present invention arranges thread on rotating shaft, spring is arranged on rotating shaft by thread, be arranged on the mode on rotating shaft with respect to prior art medi-spring by pin, the present invention makes spring contact and become linear contact with the point type of rotating shaft, increase the contact area of rotating shaft and spring, wearing and tearing are reduced, also reduce heating, and solved the problem that in prior art, between pin and rotating shaft, the technique of match machined bothers very much; In addition, straight the drawing of two ends pin of medi-spring of the present invention, hangs on the rectilinear motion part that is positioned at spring side, relatively prior art, the present invention has avoided spring to have bending in the place contacting with rotating shaft, makes bending part on the spring revolution space away from rotating shaft; One aspect of the present invention adopts the mode of linear contact, makes on the other hand the stress damage position of spring away from the revolution space of spring, can extend greatly the service life of spring, thereby improve the quality of whole clutch and smart lock.
2) the present invention is provided with surrounding and has the installation cavity of brace table to motor, rectilinear motion part and train of reduction gears, form omnidirectional support in the surrounding of motor, rectilinear motion part and train of reduction gears, effectively reduce cover plate pressurized and cause the generation of the stuck problem of interior fittings.
3) with respect in prior art, rotating shaft being installed on to this mode in the installing hole on base, the present invention adopts the forward and backward restitope of below and the arc bayonet socket of top that rotating shaft is stuck in to this mounting means between restitope and arc bayonet socket, rotating shaft need not or put the operations such as collar through base when mounted, in addition, rectilinear motion part is designed to the square tubular that a side is opened wide by the present invention, all simplified greatly the assembling of clutch of the present invention.
Brief description of the drawings
Fig. 1 is the stereogram of conventional clutch;
Fig. 2 is another stereogram (cover plate does not draw) of conventional clutch;
Fig. 3 is the top view of conventional clutch;
Fig. 4 is the explosive view of the part accessory of the clutch of preferred embodiment of the present invention;
Fig. 5 is the stereogram of the clutch of preferred embodiment of the present invention;
Fig. 6 is the stereogram of the clutch of preferred embodiment of the present invention;
Fig. 7 is the assembling schematic diagram of the clutch of preferred embodiment of the present invention;
Fig. 8 is another explosive view of the part accessory of the clutch of preferred embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiments of the invention, the invention will be further described:
As shown in Figure 1, 2, 3, the clutch being applied on intelligent door lock of the present invention, it comprises base 1 and cover plate 2, cover plate 2 covers on base 1, forms box structure together with base 1.
Clutch also comprises motor 3, rotating shaft 7, spring 8, rectilinear motion part 9 and the train of reduction gears being formed by driving gear 4, driven gear 5, reduction gearing 6, and these members are all arranged in the box structure being made up of above-mentioned base 1 and cover plate 2.
As shown in Figure 1, base 1 comprises side plate 11 and the middle dividing plate 12 of base plate, periphery. Side plate 11 and dividing plate 12 form on base 1 for supporting the brace table of cover plate 2, side plate 11 and dividing plate 12 are at arranged on left and right sides and anterior three installation cavitys that are respectively used to hold motor 3, rectilinear motion part 9, train of reduction gears that cross of base plate 1, the surrounding of each installation cavity has brace table, so that the surrounding in motor 3, rectilinear motion part 9, train of reduction gears forms omnidirectional support to cover plate 2, effectively reduce the generation that cover plate 2 pressurizeds cause the stuck problem of the accessory of box structure inside.
Between the installation cavity of motor 3 and rectilinear motion part 9, separated by a longitudinal side plate 12, they two separate by a lateral partitions 12 and the installation cavity of the train of reduction gears that is positioned at base front portion again. The front side board of base 1 is by dismountable base 1 front end that is fixed on of connector, as shown in Figure 1,3. The rear end face of the installation cavity of train of reduction gears is the described lateral partitions 12 between the installation cavity in train of reduction gears and the installation cavity of rectilinear motion part and the installation cavity of motor, and the front end face of the installation cavity of train of reduction gears is the front side board 11 of base 1. As shown in Figure 1,3, motor 3 is parallel in the installation cavity of motor that base 1 ground is arranged on base 1 left side. The top of the lateral partitions 12 between the installation cavity of motor and the installation cavity of train of reduction gears has a U-shaped breach 121, the output shaft of motor passes the installation cavity that enters train of reduction gears from U-shaped breach 121, motor main body is resisted against on the edge of U-shaped breach 121 both sides and stops its migration, the installation cavity rear portion of motor 3 is provided with arc saddle 13, and the side plate 11 of motor 3 rear side is provided with connection jaws 111. As shown in Figure 4, the relevant position of cover plate 2 is provided with the arc bayonet socket 21 for clamping motor main body, also be provided with for stoping for keeping out at motor body rear face the curved baffle 22 moving after motor after covering on base 1 at lid 2, arc buckle 21 and curved baffle 22 are connected as a single entity.
As shown in Fig. 1,3,5, rotating shaft 7 is parallel in the installation cavity of the rectilinear motion part that is arranged on base 1 right side of base 1 equally. Lateral partitions 12 tops between the installation cavity of rectilinear motion part 9 and the installation cavity of train of reduction gears have a breach 122, the installation cavity that enters train of reduction gears is passed in rotating shaft 7 front portions from this breach, front end is inserted on the front end face of installation cavity of train of reduction gears, breach 122 forms the front restitope of rotating shaft 7, this breach 122 is made up of two U-shaped grooves, be positioned at U-shaped groove above and be the mouth that tightens that is positioned at U-shaped groove below, this tightens mouth and is configured for a bayonet socket that stops rotating shaft 7 to move forward. The installation cavity rear portion of rectilinear motion part 9 is provided with the rear restitope 14 of rotating shaft 7, rear restitope 14 end faces are provided with U-shaped breach 141, rear restitope 14 is connected with the side plate 11 at its rear, the side plate 11 at rear restitope 14 rears is configured for stoping the baffle plate moving after rotating shaft 7, and the both sides of the side plate 11 at rear restitope 14 and rear thereof all have for allowing the therefrom room 15 of protuberate basic unit 1, rectilinear motion part 9 rear ends. The relevant position of cover plate 2 is provided with for coordinating with U-shaped breach 141 and two U-shaped grooves the arc bayonet socket 23 that clamps rotating shaft 7. Be different from rotating shaft of the prior art and pierce into the mode that the installing hole that arranges on base is installed, rotating shaft of the present invention when mounted, only need directly put into the correct position of base, cover after lid, the U-shaped breach 141 being equipped with on base and lid, U-shaped groove, arc bayonet socket 23 are installed between the two by rotating shaft, avoid rotating shaft through base and put the operations such as collar, very convenient.
As shown in Figure 3,4, rectilinear motion part 9 is sleeved on rotating shaft 7. Rectilinear motion part 9 front portions are spring cavity 91, spring cavity 91 is the square tubular that a side is opened wide, comprise front end face 911, rear end face 912 and a side 913, rear end face 912 is provided with the circular hole passing for rotating shaft 7, front end face 911 is laterally provided with a groove 9111 away from a side of spring cavity 91 sides 913, the otch that groove 9111 is gone out by the just right round perforate of circular hole on position and rear end face 912 with from the middle part crosscut of circle perforate circumference forms, and spring cavity 91 sides are provided with a square port 9131. Rectilinear motion part 9 rear portions are " π " font, comprise two Extendible flakes and a tongue piece, two Extendible flake front ends connect the rear end face 912 of rectilinear motion part spring cavity, rear end outside room 15 protuberate basic units 1 of side plate 11 both sides at restitope 14 and rear thereof, is connected with the tongue piece that is horizontally installed on base 1 rear respectively from rotating shaft. Rectilinear motion part can have multiple pattern, as tongue piece is designed to dismountable Extendible flake rear end that is arranged on, as the relevant position design at tongue piece and Extendible flake is convenient to make tongue piece to be mounted on hook and the hanging hole etc. of Extendible flake rear end face. Tongue piece can also have multiple pattern, to adapt to the more smart lock of polytypic, improves the versatility of clutch of the present invention.
As shown in Figure 1,3, spring 8 is also sleeved on rotating shaft 7, and is positioned at the spring cavity 91 of rectilinear motion part 9 front portions, rotating shaft 7 be provided with one section with spring 8 adaptations, projection threads 71, spring 8 is installed on the threaded section of rotating shaft 7. After straight the drawing of two ends pin of spring 8, through the square port 9131 of spring cavity 91, after the bending of end, hang on the upper and lower edge of square port 9131, away from the spin axis space of rotating shaft 7. The present invention arranges thread, make spring and contacting of rotating shaft be transformed into linear contact, be conducive to increase the contact area of rotating shaft and spring, reduce wearing and tearing, reduce heating, in addition, both ends of the spring pin is straight draws, avoid having bending in the place contacting with rotating shaft, can extend greatly on the whole the service life of spring.
Driving gear 4 is arranged on the output shaft of motor 3, driven gear 5 is arranged on the front end of rotating shaft 7, reduction gearing 6 is arranged on base 1 front portion by an alignment pin 10, alignment pin 10 one end are inserted on the rear end face of installation cavity of train of reduction gears, the other end is inserted on the front end face of installation cavity of train of reduction gears, as shown in Figure 5. Reduction gearing 6 has the initiative between gear 4 and driven gear 5, connects driving gear 4 and driven gear 5 and carries out transmission, as shown in Figure 3. Motor 3 drives the forward and reverse rotation of rotating shaft 7 by driving gear 4, reduction gearing 6, driven gear 5, with the forward and reverse rotation of rotating shaft 7, spring 8 does the rectilinear motion that advances or retreat along rotating shaft 7, and drives the rear end of rectilinear motion part 9 regain or stretch out.
For the ease of installation of the present invention, as shown in Figure 3,4, between the front and rear end of the installation cavity of train of reduction gears, be provided with locating hole 24 and the locating dowel 123 for coordinating installation, be also provided with the installing hole 25 and the tapped blind hole 124 that coordinate installation for both. Between the longitudinal baffle 12 between the installation cavity of rectilinear motion part and the installation cavity of motor and cover plate 2, be also provided with locating dowel 125 and locating hole 26 for coordinating installation, be also provided with tapped blind hole 126 and installing hole 27 for coordinating installation. On longitudinal baffle 12 upper surfaces, be also provided with a long perforate, mainly consider technological problems herein. If base adopts plastic material, in the time that material thickness is excessive, there will be serious shrink, open control by open length on longitudinal baffle herein, object is to subtract thick, prevents that shrink material from causing the problem that dimensional accuracy is inadequate. If base adopts metal material processing, do not need to consider the thick problem of subtracting of this position. The back side of base 1 base plate is provided with a screw 16 and two locating dowels 17 for clutch is installed, three's distribution triangular in shape. Locating dowel 17 plays the role of positioning in the time that clutch is installed herein, makes clutch that rear position is installed and keeps stable not off normal. Clutch of the present invention can also adopt three screws of distribution triangular in shape to fix installation, the locating dowel of design also can have various ways herein, as divided four small columns in four end angle places of base back surface, or directly adopt a square as locating dowel.
The position that cover plate 2 is positioned at the installation cavity top of train of reduction gears is provided with a square aperture 28, is to stay enough spaces to the rotation of gear herein, avoids interfering with the rotation of gear. Certainly, the design of this place's square aperture, a just selection of the present embodiment, in the time that the installation cavity height of train of reduction gears is enough, can not design this opening completely. The both sides of the edge of cover plate 2 are also provided with the grab 29 of downward protrusion, and the relevant position, outside of the side plate of base 1 both sides is provided with the button bit 18 coordinating with this grab.