Summary of the invention
The object of the present invention is to provide a kind of spring brake, be intended to solve that existing brake complex structure, brake torsion are less, poor reliability, use is dumb, cost is high and the problem that can only apply to the input device end.
The present invention realizes like this, a kind of bidirectional spring brake, comprise that inside has the brake cover of holding cavity, for the input spring pusher dog that is connected with first input shaft of extraneous input device, be used for the delivery spring pusher dog that is connected with second input shaft of extraneous output unit and can be sticked in described input spring pusher dog respectively, the spring of delivery spring pusher dog, described input spring pusher dog, spring and delivery spring pusher dog are positioned in the described holding cavity in regular turn, described input spring pusher dog comprises first rotating disk and alternate a plurality of first pusher dogs being located at first rotating disk, one side and being sticked in described spring one end that are connected with described first input shaft, described delivery spring pusher dog comprises second rotating disk and alternate a plurality of second pusher dogs being located at described second rotating disk, one side and being sticked in the described spring the other end that are connected with described second input shaft, a plurality of described first pusher dogs and a plurality of described second pusher dog arrange in opposite directions, alternate intersecting to form around shape, described spring housing is located at outside described first pusher dog and described second pusher dog, described bidirectional spring brake also comprises the bearing that is sheathed on described first input shaft, and described bearing places an end of described brake cover.
Further, a plurality of described first pusher dogs are uniformly distributed in a side of described first rotating disk, first gap that is formed for placing second pusher dog between adjacent described first pusher dog, a plurality of described second pusher dogs are uniformly distributed in a side of described second rotating disk, second gap that is formed for placing first pusher dog between adjacent described second pusher dog.
Further, there is the gap between described first pusher dog and described second pusher dog.
Further, the top of described first pusher dog has first groove that can be connected to described spring one end, and the top of described second pusher dog has second groove that can be connected to the described spring the other end.
Further, have first draw-in groove that can be sticked in described first input shaft in described first rotating disk, have second draw-in groove that can be sticked in described second input shaft in described second rotating disk.
The present invention also provides a kind of electric equipment, and it comprises that described input device has first input shaft for the input device of input power, the output unit that is used for outputting power and above-mentioned bidirectional spring brake, and described output unit has second input shaft.
Further, described first input shaft passes described input spring pusher dog, and places described delivery spring pusher dog.
Further, an end of described brake cover is sticked in the shell of described input device, and its other end is sticked in the shell of described output unit.
Compared with prior art, this bidirectional spring brake is mechanical mechanism, does not need the participation of electricity, and it can be used for the input device end, also can be used for the output unit end, and cost is low; Pass through torsion spring between input spring pusher dog and the delivery spring pusher dog, thereby realize transmission or the brake function of power, its simple in structure and when brake, torsion is bigger, realization brake function that can be promptly and accurately, the reliability height, it is according to actual state, utilize spring can adjust the size of torsion, use flexibly.
Embodiment
In order to make purpose of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The invention provides a kind of bidirectional spring brake, comprise input spring pusher dog that inside has the brake cover of holding cavity, is used for being connected with first input shaft of extraneous input device, for the delivery spring pusher dog that is connected with second input shaft of extraneous output unit and the spring that can be sticked in described input spring pusher dog, delivery spring pusher dog respectively, described input spring pusher dog, spring and delivery spring pusher dog are positioned in the described holding cavity in regular turn.
Among the present invention, this bidirectional spring brake is mechanical mechanism, and it does not need the participation of electricity, so can be used for the input device end, also can be used for the output unit end, and simple in structure, cost is low, during brake, interior wall friction by spring and holding cavity carries out brake operation, and its torsion is bigger, and realization brake function that can be promptly and accurately, the reliability height, and this bidirectional spring brake can utilize spring can adjust the size of torsion according to actual state, uses flexibly.
Below in conjunction with concrete accompanying drawing realization of the present invention is described in detail.
Shown in Fig. 1 ~ 3, be a preferred embodiment provided by the invention.
As described in Fig. 1 ~ 3, this bidirectional spring brake 1 comprises brake cover 12, input spring pusher dog 13, delivery spring pusher dog 15 and spring 14, these brake cover 12 shells as bidirectional spring brake 1, it is cylindric, has holding cavity 123 in it, this holding cavity 123 is circular hole, be used for placing input spring pusher dog 13, delivery spring pusher dog 15 and spring 14, and input spring pusher dog 13, spring 14 and delivery spring pusher dog 15 are positioned in the holding cavity 123 in regular turn, this holding cavity 123 is communicated with the two ends of brake cover 12, like this, guarantee that first input shaft 21 of extraneous input device 2 and second input shaft 32 of the output unit 3 in the external world can stretch in the holding cavity 123, input spring pusher dog 13, delivery spring pusher dog 15 and spring 14 can rotate in this holding cavity 123, input spring pusher dog 13 1 ends are used for being connected in first input shaft 21 of input device 2, its the other end is sticked in spring 14, one end of delivery spring pusher dog 15 is sticked in spring 14, its the other end is connected in second input shaft 32 of output unit 3, like this, spring 14 can be sticked in input spring pusher dog 13 and delivery spring pusher dog 15 respectively, when first input shaft 21 of input device 2 rotates, driving input spring pusher dog 13 rotates in the holding cavity 123 of brake cover 12, simultaneously, input spring pusher dog 13 torsion springs 14, make spring 14 tighten up, the torsion of spring 14 is also along with it tightens up increasing, when the torsion of spring 14 acquires a certain degree, because spring 14 also is sticked in an end of delivery spring pusher dog 15, thereby, delivery spring pusher dog 15 rotates, thereby second input shaft 32 that drives output unit 3 rotates, thereby realize the transmission of power between input device 2 and the output unit 3, when input device 2 outage takes place or suddenly during the situation of dead electricity, because first input shaft 21 of input device 2 stops operating, at this moment, output unit 3 is rotated further under action of inertia, delivery spring pusher dog 15 also rotates, thereby, then can under the drive of delivery spring pusher dog 15, reversing to another way of spring 14, be that spring 14 loosens, at this moment, the internal diameter of spring 14 then can increase, thereby be connected on the inwall of holding cavity 123, rub with holding cavity 123, this frictional force makes delivery spring pusher dog 15 stop operating, output unit 3 also stops operating, thereby realization brake function, what this brake adopted is the mechanical type brake, it does not need electricity consumption, so can apply to input end, also can apply to output terminal, simple in structure, the torsion that produces during brake is bigger, so accurate positioning, can in time brake, good reliability, can have more actual conditions and adjust torsion automatically, use flexibly, cost is low.
Input spring pusher dog 13 comprises first rotating disk 132, has first draw-in groove in this first rotating disk 132, this first draw-in groove is used for being connected with first input shaft 21 of input device 2, end at first rotating disk 132 is provided with first pusher dog 131, delivery spring pusher dog 15 comprises second rotating disk 152, have second draw-in groove in this second rotating disk 152, this second draw-in groove is used for being connected with second input shaft 32 of output unit 3, is provided with second pusher dog 151 at an end of second rotating disk 152.In the present embodiment, first pusher dog 131 of input spring pusher dog 13 and second pusher dog 151 of delivery spring pusher dog 15 arrange in opposite directions, first pusher dog 131 and second pusher dog 151 are set-located in opposite directions, spring 14 is set in the periphery of first pusher dog 131 and second pusher dog 151, and the one end is connected to first pusher dog 131, its the other end is connected to second pusher dog 151, like this, by spring 14, realize linking to each other of input spring pusher dog 13 and delivery spring pusher dog 15, namely realize linking to each other of input device 2 and output unit 3, spring 14 namely can play the effect that connects input device 2 and output unit 3, simultaneously, when input device 2 dead electricity or outage, then can play the effect of brake.
Be evenly distributed to less plural first pusher dog 131 on one side of first rotating disk 132 of above-mentioned input spring pusher dog 13, form first gap between each first pusher dog 131, be evenly distributed to less plural second pusher dog 151 on one side of second rotating disk 152 of delivery spring pusher dog 15, form second gap between each pusher dog, when input spring pusher dog 13 and delivery spring pusher dog 15 are assembled together in opposite directions, first pusher dog 131 places second gap, 151 of second pusher dogs place first gap, thereby realize the setting in opposite directions of input spring 14 devices and delivery spring 14 devices.
There is the gap between first pusher dog 131 that is assembled together in opposite directions and second pusher dog 151, like this, when input spring pusher dog 13 rotates, it can drive spring 14 and reverse, and its distance of reversing is the arc length in gap between first pusher dog 131 and second pusher dog 151, certainly, when input device 2 dead electricity or outage, delivery spring pusher dog 15 drives spring 14 and reverses, and makes the internal diameter of spring 14 increase, and its distance of reversing is the arc length in gap between first pusher dog 131 and second pusher dog 151.
In the present embodiment, the quantity of the quantity of first pusher dog 131 and second pusher dog 151 is the same, so the quantity in the quantity in first gap and first gap also is the same.
In the present embodiment, first rotating disk 132 is provided with two first pusher dogs 131, also be provided with two second pusher dogs 151 on second rotating disk 152, certainly, in practice, the user can arrange first pusher dog 131 and second pusher dog 151 of other quantity according to actual needs, but the quantity of first pusher dog 131 and second pusher dog 151 is consistent.
The two ends of spring 14 are respectively arranged with spring terminal, in the present embodiment, the spring terminal at spring 14 two ends is can be fastened on respectively in first pusher dog 131 and second pusher dog 151, thereby, drive spring terminals towards the reversing of different direction by first pusher dog 131 and second pusher dog 151, realize dwindling and increasing of spring 14 internal diameters.
In the present embodiment, the top of first pusher dog 131 have can with first groove of spring terminal butt, the top of second pusher dog 151 have can with second groove of spring terminal butt, like this, by spring terminal respectively with the butt of first groove, second groove, and the rotation of input spring pusher dog 13 realizes dwindling of spring 14 internal diameters, the rotation of delivery spring pusher dog 15 realizes the increase of spring 14 internal diameters.
For being connected of first input shaft 21 of realizing importing spring pusher dog 13 and input device 2, first draw-in groove of this input spring pusher dog 13 is the flat shape, first input shaft 21 of input device 2 is fastened in first draw-in groove of this flat shape, thereby realizes driving the rotation of input spring pusher dog 13.
In the present embodiment, for being connected of second input shaft 32 of realizing delivery spring pusher dog 15 and output unit 3, second draw-in groove of this delivery spring pusher dog 15 is the in-line shape, second input shaft 32 of output unit 3 is fastened in second draw-in groove of this in-line shape, thereby realizes that delivery spring pusher dog 15 drives the rotation of second input shaft 32 of output unit 3.
This bidirectional spring brake 1 also comprises bearing 11, and this bearing 11 places an end of brake cover 12, and it can be set on first input shaft 21 of input device 2 first input shaft 21 of increase input device 2 and input spring pusher dog 13 connection stability.
Particularly, has a bearing groove 122 that can be used for placing bearing 11 at an end of brake cover 12, this bearing groove 122 is communicated with holding cavities 123, and like this, first input shaft 21 of input device 2 passes directly to enter in the holding cavity 123 behind the bearing 11 and is connected with input spring pusher dog 13.
The present invention also provides a kind of electric equipment, this electric equipment comprises input device 2, output unit 3 and above-mentioned bidirectional spring brake 1, this input device 2 has first input shaft 21, its first input shaft 21 is connected in the input spring pusher dog 13 of bidirectional spring brake 1, output unit 3 has second input shaft 32, its second input shaft 32 is connected in the delivery spring pusher dog 15 of bidirectional spring brake 1, has above-mentioned bidirectional spring brake 1 between the input device 2 of this motor and the output unit 3, it has can in time brake good reliability, can adjust torsion automatically according to actual conditions, use flexible and low cost and other advantages.
In the present embodiment, first input shaft 21 in the input device 2 is connected with input spring pusher dog 13, it passes input spring pusher dog 13, and extend in the delivery spring pusher dog 15, and have the gap with delivery spring pusher dog 15, like this, guarantee that input spring pusher dog 13 and delivery spring pusher dog 15 are when rotating, strengthen its concentricity, and make that the structure of whole electric equipment is compacter, can better finish transmission of power work.
In order to make the structure of electric equipment more firm and integrated, one end engagement connection of brake cover 12 is in the shell of input device 2, its the other end engagement connection is on the shell of output unit 3, and like this, input device 2, bidirectional spring kill brake 1 and output unit 3 threes are connected.
The two ends of this brake cover 12 have the projection 121 that can be respectively fastens with input device 2, output unit 3 respectively, accordingly, all be provided with the 3rd draw-in groove that can fasten with this projection 121 on the shell of the shell of input device 2 and output unit 3, like this, by cooperatively interacting of projection 121 and the 3rd draw-in groove, thereby realize interconnecting of input device 2, bidirectional spring brake 1, output unit 3 threes.
In the present embodiment, input device 2 is motor, and output unit 3 is generally speed reducer, and 32 of second input shafts are the first order sun gears in this speed reducer.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.