CN113374361A - Forward flexible reverse rigid double-shift lever mechanism based on constant-force spring force closed cam - Google Patents
Forward flexible reverse rigid double-shift lever mechanism based on constant-force spring force closed cam Download PDFInfo
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- CN113374361A CN113374361A CN202110518037.3A CN202110518037A CN113374361A CN 113374361 A CN113374361 A CN 113374361A CN 202110518037 A CN202110518037 A CN 202110518037A CN 113374361 A CN113374361 A CN 113374361A
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- rod
- rotating
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- constant force
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/42—Cams
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/06—Electrical using rotary motors
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/34—Details of the actuator transmission of geared transmissions
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Abstract
The invention belongs to the technical field of transmission, and discloses a constant-force spring force closed cam mechanism which can enable a profile surface contacted by a cam to have good force controllability and good vibration damping performance when the stroke or the swing angle and the stroke fluctuation are large, wherein the cam mechanism comprises a rotating cam, a cam swing rod or a swing rod and a return spring, and the cam swing rod is provided with a contact end contacted with the profile of the rotating cam; particularly, the return spring is a constant force spring, and when the length of the return spring is the deformation critical length of the constant force spring, the return force of the return spring is constant. The invention also discloses a flexible double-deflector rod mechanism which is based on different contact states between the stay rod and the deflector rod, the molded surface of the stay rod and the drive plate, the corresponding rotating shaft and the stay rod, and the mandrel, constructs a novel large stroke by a constant force spring, and can realize positive constant force flexible and reverse rigid support; the novel double-layer combined double-deflector rod mechanism is applied to the car door lock; the transmission mechanism is constructed by combining a constant force spring and multiple layers and can be expanded into a large-stroke cam mechanism and an intermittent transmission mechanism.
Description
Technical Field
The invention belongs to the technical field of transmission, and particularly relates to a forward flexible reverse rigid double-deflector rod mechanism based on a constant-force spring force closed cam.
Background
The design of a few drive mechanisms with compliant gearing to desired force/and motion requirements is a complex mechanistic challenge. Springs, which are important compliant members, are mostly linear springs to construct the transmission mechanism.
The cam mechanism can enable the driven piece to do expected regular motion, the force closed cam contact is provided with a cam spring damping system, and as a high-auxiliary mechanism, when the stroke of the roller push rod or the swing rod is larger, namely the push rod or the swing rod moves for a long distance at the far stroke and the near stroke of the cam, the contact force between the roller and the cam profile is increased along with the increase of the compression amount of the linear spring. The unstable contact force can lead to serious abrasion of the roller and the cam and weakening of the motion output characteristic of the push rod, and the long-term operation can seriously affect the contact surface of the roller and the cam and the service life of a rotating shaft of the cam.
At present, a spring which keeps contact in a cam mechanism or a cam-like contact mechanism is a tension (compression) linear spring, the output tension (torque) is in direct proportion to the tension length (rotation angle) of the spring, and when the stroke of the cam or the cam-like contact is large or the stroke fluctuation is large, the larger the spring deformation is, the larger the contact force (torque) is. The strength of the mechanism is lack of adaptability to complex actual working conditions, and the contact force of the mechanism is increased under large stroke and large stroke fluctuation, so that the friction force between the roller and the cam is increased, the abrasion is serious, and the service life of the cam is shortened.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a forward flexible reverse rigid double-deflector rod mechanism for closing a cam based on constant-force spring force, which can realize forward rigid support and reverse constant-force flexibility, so that a profile surface contacted by the cam or the like has constant contact force when the stroke is large and the stroke fluctuation is large, the abrasion of a force contact point is reduced, and the mechanism has good force controllability and good vibration reduction performance.
In order to achieve the purpose, the invention provides the following technical scheme:
constant force spring force closed cam mechanism, its characterized in that includes: a rotating cam rotatably provided; the cam oscillating bar is provided with a hinged end and a contact end, and the contact end is contacted with the profile of the rotating cam; and the return spring is arranged on the hinged end and used for enabling the cam oscillating bar to rotate around the hinged end in a recoverable mode, wherein the return spring is a constant force spring, all contact paths formed by the contact end on the rotating cam are used as a spring restoring force movement section, the lower limit of the reacting force of the contact end on the spring restoring force movement section on the rotating cam is zero, and the upper limit of the reacting force is the acting force of the cam oscillating bar on the rotating cam, caused by the spring restoring force corresponding to the constant force spring deformation critical length of the return spring.
One-way constant force compliance mechanism, its characterized in that includes: a base; the reset driving plate is arranged on the base in a resetting and rotating mode and is provided with a shifting notch; and a toggle assembly disposed near the reset dial, the toggle assembly including a rotary rod, a toggle rod, a locking rod and a constant force spring, wherein one end of the rotary rod is hinged to the base, the middle portion of the toggle rod is hinged to the other end of the rotary rod, the locking rod is mounted on the rotary rod and abutted to the toggle rod, one end of the toggle rod is connected to one end of the rotary rod through the constant force spring, the locking rod is a limit swing part of a constant force spring force closed cam mechanism, when the locking rod is abutted to the toggle rod, the length of the constant force spring corresponds to the critical deformation length of the constant force spring, the constant force spring is a return spring of the constant force spring closed cam mechanism, the toggle notch faces one end of the rotary rod, and when the rotary rod rotates with one end as a hinge point, the other end of the toggle rod contacts with the edge of the reset dial or extends into the toggle notch, when the other end of the toggle rod contacts with the edge of the reset dial to deform the constant force spring, all the travel paths of the other end of the shifting rod on the reset driving plate are spring restoring force motion sections of the constant-force spring force closed cam mechanism.
Symmetrical one-way constant force compliance mechanism, its characterized in that includes: a mechanism base; the bidirectional reset drive plate is arranged on the mechanism base in a resetting and rotating way and is provided with a bidirectional shift notch; and two-way subassembly of stirring, stir the subassembly including two, two one ends that stir the subassembly all is located same mounting plane and two rotary rods all articulate the same point at the mechanism base, two-way one end of stirring breach towards the rotary rod, and when the rotary rod used one end to rotate as the hinge point, the other end of one of them of two driving levers and the marginal contact of two-way reset dial or stretch into two-way breach of stirring, when the marginal contact of the other end of driving lever at two-way reset dial makes the constant force spring that corresponds and when taking place deformation, all stroke routes of the other end of driving lever on two-way reset dial are the spring restoring force motion section of constant force spring force closed cam mechanism.
Preferably, the included angle between the two rotating rods of the two toggle assemblies is a predetermined included angle, and the two toggle assemblies are symmetrically arranged by taking one end of the rotating rod as a symmetric center.
Two driving lever mechanisms of door lock, its characterized in that includes: a double deflector rod unit; and a safety unit for preventing the safety of the vehicle,
the double-driving lever unit comprises a safety gear and a double-layer driving lever assembly, one end face of the safety gear is used as a mounting face, the safety gear is the rotating rod, a safety mandrel, an upper-layer upper-safety driving lever mandrel and a lower-layer lower-safety driving lever mandrel are vertically arranged on the mounting face, the double-layer driving lever assembly comprises an upper-layer upper-safety driving lever, a lower-layer lower-safety driving lever and a constant force spring, the upper-layer upper-safety driving lever and the lower-layer lower-safety driving lever are both driving levers, the constant force spring is the constant force spring, the upper-layer upper-safety driving lever and the lower-layer lower-safety driving lever are arranged along the extension direction of the safety mandrel, the length direction of the upper-layer upper-safety driving lever and the length direction of the lower-safety driving lever are both vertical to the safety mandrel, the middle part of the upper-layer upper-safety driving lever and the middle part of the lower-safety driving lever are respectively hinged to the upper-safety driving lever mandrel and the lower-safety driving lever mandrel, so that two lever structures are formed, and the upper-safety driving lever has an upper rotating end and a lower end, the lower layer of the safety release deflector rod is provided with a lower rotating end and a lower stopping end, the upper stopping end and the lower stopping end are respectively abutted against the circumferential surface of the safety mandrel, two ends of a constant force spring are respectively arranged at the upper stopping end and the lower stopping end, or the upper stopping end and the lower stopping end are respectively connected with the safety mandrel in a resettable way through two constant force springs, the safety unit comprises a safety turntable mandrel and a safety turntable, the safety turntable is the bidirectional reset drive plate, the safety turntable mandrel is positioned near the safety gear and is parallel to the safety mandrel, the gravity center of the safety turntable is hinged on the safety turntable mandrel, the safety turntable is provided with a shifting part, one end of a safety push rod is arranged at the edge of the safety turntable, one side of the shifting part facing the double-layer deflector rod assembly is provided with an electric safety release lug and an electric upper safety lug which are both convexly arranged, and the gap of the electric safety release lug and the electric upper safety lug in the circumferential direction of the safety turntable is the bidirectional shifting notch, the electric upper safety projection and the electric lower safety projection are correspondingly arranged in the extending direction of the safety mandrel with the lower safety driving rod and the upper safety driving rod respectively, when the edge of the upper rotating end of the electric upper safety projection is in contact with the corresponding constant force spring and deforms, or when the edge of the lower rotating end of the electric upper safety projection is in contact with the corresponding constant force spring and deforms, all the travel paths of the upper rotating end on the electric upper safety projection and all the travel paths of the lower rotating end on the electric lower safety projection are spring restoring force movement sections of the constant force spring force closed cam mechanism.
Preferably, the upper layer upper insurance driving lever further has an upper arc cambered surface, the upper rotating end is connected with the upper stopping end through the upper arc cambered surface, when the upper layer upper insurance driving lever rotates in a lever mode, the upper arc cambered surface contacts with the circumferential cambered surface of the insurance dabber, the lower layer lower insurance driving lever further has a lower arc cambered surface, the lower rotating end is connected with the upper stopping end through the lower arc cambered surface, and when the lower layer lower insurance driving lever rotates in a lever mode, the lower arc cambered surface contacts with the circumferential cambered surface of the insurance dabber.
Compared with the prior art, the invention has the beneficial effects that:
1. the cam oscillating bar of the constant-force spring force closed cam mechanism is provided with a contact end and a hinged end which are contacted with the profile of the rotating cam; the return spring is arranged on the hinged end and is used for enabling the cam oscillating bar to rotate in a recoverable way; all contact paths formed by the contact end on the rotating cam are used as a spring restoring force movement section, the lower limit of the reacting force of the contact end on the spring restoring force movement section is zero, and the upper limit is the acting force of a cam swing rod on the rotating cam, which is caused by the spring restoring force corresponding to the constant force spring deformation critical length of the restoring spring. Therefore, the invention ensures that the contact force of the profile surface contacted by the cam is constant when the stroke is large and the stroke fluctuation is large, thereby reducing the abrasion of a force contact point, and having good force controllability and good vibration damping performance.
2. Because one end of a rotating rod of the unidirectional constant force compliance mechanism of the invention is hinged on the base, the middle part of the shifting rod is hinged at the other end of the rotating rod, the locking rod is arranged on the rotating rod and is abutted against the shifting rod, one end of the shifting rod is connected with one end of the rotating rod through a constant force spring, the shifting notch faces one end of the rotating rod, when the rotating rod rotates by taking one end as a hinged point, the other end of the poking rod is contacted with the edge of the reset poking disc or extends into the poking notch, therefore, the invention can realize positive rigid support and negative constant force compliance, so that the contact force of the profile surface contacted with the cam is small when the stroke is large and the stroke fluctuation is large, thereby reducing the abrasion of the force contact point, having good force controllability and good vibration damping property, the driving torque is kept constant, the working stability of the system is greatly improved, and the service life of the system is prolonged.
3. Because the two poking components of the symmetrical unidirectional constant-force flexible mechanism are positioned on the same mounting plane, one ends of the two rotating rods are hinged to the same point of the mechanism base, the bidirectional poking notch faces one end of the rotating rod, and when the rotating rod rotates by taking one end as a hinged point, the other end of one of the two poking rods is in contact with the edge of the bidirectional reset poking disc or extends into the bidirectional poking notch, the unidirectional constant-force flexible mechanism can be simultaneously realized in the forward direction and the reverse direction on the same plane.
4. The double-driving lever mechanism of the vehicle door lock comprises a double-driving lever unit and a shifting part, wherein the safety gear is the rotating rod, the upper-layer upper safety driving lever and the lower-layer lower safety driving lever are both the driving levers, the constant force spring is the constant force spring, the safety turntable is the bidirectional reset driving disc, and the gap between the electric safety relief bump and the electric upper safety bump in the circumferential direction of the safety turntable is the bidirectional shifting notch.
5. Because the upper layer upper safety deflector rod of the vehicle door lock double deflector rod mechanism of the invention is also provided with the upper convex arc surface, the upper rotating end is connected with the upper stop rotating end through the upper convex arc surface, when the upper layer upper safety deflector rod rotates, the upper arc cambered surface contacts with the circumferential cambered surface of the safety mandrel, the lower layer lower safety deflector rod also has a lower arc cambered surface, the lower rotating end is connected with the upper rotating end through the lower arc cambered surface, when the lower layer safety-releasing deflector rod rotates the lever, the lower convex arc surface contacts with the circumferential arc surface of the safety core shaft, therefore, when the upper-layer upper-safety shifting rod and the lower-layer lower-safety shifting rod rotate in a lever mode, the shifting rod motion trail in the system can be consistent with the motion trail of a force contact point contacted with the cam, the shifting rod is stressed constantly by further utilizing the mechanism principle of a symmetrical one-way constant force compliant mechanism, the movement is controllable, and the lever motion reliability is enhanced.
Drawings
FIG. 1 is a schematic structural view of a constant force spring force closing cam mechanism according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a unidirectional constant-force compliant mechanism according to a first embodiment of the present invention;
fig. 3 is a schematic view illustrating a forward supporting state of the shift lever relative to the reset dial according to the first embodiment of the present invention;
fig. 4 is a schematic diagram of a reverse compliant state of the shift lever relative to the reset dial according to the first embodiment of the present invention;
FIG. 5 is a schematic structural view of a symmetrical unidirectional constant-force compliant mechanism according to a first embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a first dual shifter mechanism of a vehicle door lock according to an embodiment of the present invention;
FIG. 7 is a partial schematic view of portion D of FIG. 6; and
fig. 8 is a schematic structural view of a constant force spring force closing cam mechanism according to a second embodiment of the present invention.
In the figure: A. constant force spring force closed cam mechanism, A1, rotating cam, A2, return spring, A3, hinged end, A4, contact end, A5, cam swing link, 100, unidirectional constant force compliance mechanism, 110, reset dial, 111, toggle notch, 120, toggle component, 121, rotating rod, 122, toggle rod, 1221, stop end, 1222, rotating end, 123, locking rod, 124, constant force spring, 200, symmetrical unidirectional constant force compliance mechanism, 210, bidirectional reset dial, 211, bidirectional toggle notch, 220, bidirectional toggle component, 300, door lock dual toggle rod mechanism, 310, dual toggle rod unit, 311, safety gear, 3111, safety mandrel, 3112, upper layer upper safety toggle rod mandrel, 3113, lower layer safety toggle rod mandrel, 312, dual layer component, 3121, upper layer upper safety toggle rod, 31211, upper rotating end, 31212, toggle end, 31213, upper arc surface, 3122, lower layer safety toggle rod, 31221. the lower rotating end, 31222, the lower stopping end, 31223, the lower arc cambered surface, 3123, the connecting spring, 320, the safety unit, 321, the safety turntable mandrel, 322, the safety turntable, 3221, the toggle part, 32211, the electric upper safety lug, 32212, the electric safety lug, a1 ', the moving rotating cam, a 2', the moving return spring, A3 ', the moving rod, a 4', the moving contact roller.
Detailed Description
In order to make the technical means, the original features, the achieved objects and the effects of the present invention easily understood, the following embodiments are specifically described in the present invention based on the forward compliant and reverse rigid dual lever mechanism of the constant force spring force closed cam with reference to the attached drawings, and it should be noted that the description of the embodiments is provided to help understanding of the present invention, but not to limit the present invention.
< example one >
As shown in fig. 1, the constant force spring force closing cam mechanism a in this embodiment includes a rotating cam a1, a cam rocker a5, and a return spring a 2.
The rotating cam A1 is rotatably arranged, the cam swing link A5 is provided with a hinged end A3 and a contact end A4, the contact end A4 is in contact with the profile of the rotating cam A1, a return spring A2 is arranged on the hinged end A3, and the return spring A2 is used for enabling the cam swing link A to perform a recoverable rotary motion around the hinged end A3.
The return spring A2 is a constant force spring, all contact paths formed by the contact end A4 on the rotating cam A1 are used as a spring return force movement section, the lower limit of the reaction force of the rotating cam A1, which is applied to the spring return force movement section by the contact end A4, is zero, and the upper limit is the acting force of the cam swing rod A5 on the rotating cam A1, which is caused by the spring return force corresponding to the constant force spring deformation critical length of the return spring A2, so that the contact force between the cam swing rod A5 and the moving cam A1 is prevented from linearly increasing along with the increase of the rotation angle in the large-rotation-angle movement.
As shown in fig. 2, the one-way constant force compliance mechanism 100 in this embodiment includes a base (not shown), a reset dial 110, and a toggle assembly 120.
The base is a rigid platform for serving as a mounting platform for the other components of the unidirectional constant force compliant mechanism 100.
The reset dial 110 is resettable and rotatably disposed on the base, and has a toggle notch 111, and the reset dial 110 is urged to rotate relative to the base by applying a force within the toggle notch 111 towards a profile of the toggle notch 111.
A toggle assembly 120 is disposed adjacent the reset dial 110, the toggle assembly 120 including a rotating lever 121, a toggle lever 122, a locking lever 123, and a constant force spring 124.
One end of the rotating rod 121 is hinged to the base, the middle of the shift lever 122 is hinged to the other end of the rotating rod 121, that is, the shift lever 122 forms a lever structure with the free end of the rotating rod 121 as a fulcrum, the locking rod 123 is installed on the rotating rod 121 and the locking rod 123 abuts against the shift lever, one end of the shift lever 122 is connected with one end of the rotating rod 121 through the constant force spring 124, that is, one end of the shift lever 122 is connected with the hinged point of the rotating rod 121 on the base through the constant force spring 124, one end of the shift lever 122 is used as a stopping end 1221, the other end of the shift lever is used as a rotating end 1222, when the locking rod 123 abuts against the shift lever 122, the length of the constant force spring 124 corresponds to the critical length of constant force spring deformation of the constant force spring 124, that is, the locking rod 123 seals the hinged end A3 in the cam mechanism a with the constant force spring force, and the constant force spring 124 seals the restoring spring a2 in the cam mechanism a with the constant force.
The toggle notch 111 faces one end of the rotating rod 121, that is, the toggle notch 111 faces the hinge point of the rotating rod 121 on the base, and when the rotating rod 121 rotates around the hinge point of the rotating rod 121 on the base, the rotating end 1222 contacts with the edge of the reset dial 110 or extends into the toggle notch 111.
As shown in fig. 3, when rotating lever 121 rotates in the forward direction of rotation shown in the figure, and when rotating end 1222 extends into toggle notch 111 and applies a force toward the profile of toggle notch 111, the profile of toggle notch 111 applies a reverse force to rotating end 1222, resulting in a lever force on stopper end 1221 toward lock lever 123, thereby preventing lever 122 from lever-rotating and causing rotating end 1222 to toggle reset dial 110 for rotation relative to the base.
As shown in fig. 4, when the rotating rod 121 rotates in the reverse rotation direction shown in the figure, and when the rotating end 1222 does not extend into the toggle notch 111 and contacts and applies a force to the edge profile of the reset dial 110, the edge profile of the reset dial 110 applies a reverse force to the rotating end 1222, resulting in a lever force on the stopper end 1221 that is opposite to the locking lever 123, such that the toggle lever 122 is leveraged by stretching the constant force spring 124, and the reset dial 110 is stationary relative to the base.
Combining fig. 3 and 4, the rotating end 1222 is rigidly supported in the forward direction and compliant in the reverse direction with respect to the reset dial 110, and when the other end of the toggle rod 122 contacts the edge of the reset dial 110 to deform the constant force spring 124, the other end of the toggle rod 122 closes the moving section of the restoring force of the spring in the cam mechanism a for the constant force spring force in all the stroke paths of the reset dial 110.
For simplicity, the two constant force springs 124 of the two toggle assemblies 120 can also be simplified into one constant force spring 124, and the stopping ends 1221 of the two toggle rods 122 of the two toggle assemblies 120 are connected together through the constant force spring 124.
The sliding trajectory of the rotating end 1222 at this time on the edge profile of the reset dial 110 is the same as the sliding trajectory of the force contact point in the cam profile contact, and thus, may be regarded as a cam-like contact.
When the locking lever 123 abuts against the shift lever 122, the length of the constant force spring 124 corresponds to the critical point of constant force deformation of the constant force spring 124, so that the return tension of the constant force spring 124 on the shift lever 122 is always kept constant in the process of stretching the constant force spring 124, that is, it can be regarded that the contact force of the cam-like contact does not fluctuate in every moment of the entire cycle of the cam-like contact.
As shown in fig. 5, the symmetrical one-way constant force compliant mechanism 200 in this embodiment includes a mechanism base (not shown), a two-way reset dial 210, and a two-way toggle assembly 220.
The mechanism base is a rigid platform that is used as a mounting platform for the other components of the unidirectional constant force compliant mechanism 100.
The two-way reset dial 210 is resettable and rotatably disposed on the mechanism base, has a two-way toggle notch 211, and is urged to rotate relative to the mechanism base by applying a force within the two-way toggle notch 211 towards the profile of the two-way toggle notch 211.
The bi-directional toggle assembly 220 includes two toggle assemblies 120.
Two stir subassembly 120 and all lie in same mounting plane and the one end of two rotary rods 121 all articulates in the same point of mechanism base, stir subassembly 120 and use the pin joint of rotary rod 121 to set up as symmetry center symmetry for two, and the contained angle between two rotary rods 121 is predetermined contained angle, certainly, need not confine to double-deck driving lever and rotatory driver plate, also can dispose the combination of a plurality of driving levers of multilayer and driver plate, realize more nimble configuration, can realize single drive many outputs, the constant force spring force of big stroke seals cam mechanism.
The bi-directional toggle notch 211 faces to a hinge point of the rotating rod 121 on the mechanism base, and when the rotating rod 121 rotates with the hinge point of the rotating rod 121 on the mechanism base, one of the two toggle rods 111 contacts with an edge of the bi-directional reset dial 210 or extends into the bi-directional toggle notch 211, so that the unidirectional constant force compliance mechanism 100 can be simultaneously realized in forward and reverse directions on the same plane.
When the other end of the shift lever 111 contacts the edge of the two-way reset dial 210, so that the corresponding constant force spring 124 is deformed, all the travel paths of the other end of the shift lever 111 in the two-way reset dial 210 are the constant force spring force closing cam mechanism a.
As shown in fig. 6, the door lock dual lever mechanism 300 of the present embodiment includes a dual lever unit 310 and a safety unit 320.
The safety gear 311 is driven by an external motor to rotate, and the safety gear 311 is a rotating rod 121 in the symmetrical unidirectional constant-force compliant mechanism 200.
An end face of the safety gear 311 is used as a mounting surface (not shown in the drawing), the mounting surface is the same mounting plane in the symmetrical unidirectional constant force compliant mechanism 200, the mounting surface is provided with a safety core shaft 3111, an upper layer safety deflector rod core shaft 3112 and a lower layer safety deflector rod core shaft 3113 which are all vertically arranged, the safety core shaft 3111 is a hinge point of the rotating rod 121 in the unidirectional constant force compliant mechanism 200 on the mechanism base, and the upper layer safety deflector rod core shaft 3112 and the lower layer safety deflector rod core shaft 3113 are hinge points of two deflector rods 122 in the symmetrical unidirectional constant force compliant mechanism 200 on respective rotating rods 121.
The safety core shaft 3111 and the safety gear 311 are coaxially disposed, the safety core shaft 3111, the upper layer upper safety lever shaft 3112 and the lower layer lower safety lever shaft 3113 are linearly disposed, and the distances from the upper layer upper safety lever shaft 3112 and the lower layer lower safety lever shaft 3113 to the safety core shaft 3111 are equal, in this embodiment, the safety core shaft 3111 is cylindrical.
The double-layer deflector rod assembly 312 includes an upper-layer upper safety deflector rod 3121, a lower-layer arming deflector rod 3122, and a connecting spring 3123, where the upper-layer upper safety deflector rod 3121 and the lower-layer arming deflector rod 3122 are two deflector rods 122 in the unidirectional constant force compliance mechanism 200.
The upper-layer upper safety driving lever 3121 and the lower-layer safety driving lever 3122 are identical in shape and symmetrically arranged with the safety mandrel 3111 as a center of symmetry, the upper-layer upper safety driving lever 3121 and the lower-layer safety driving lever 3122 are arranged along the extending direction of the safety mandrel 311, and the length direction of the upper-layer upper safety driving lever 3121 and the length direction of the lower-layer safety driving lever 3122 are perpendicular to the safety mandrel 311.
As shown in fig. 7, the middle portion of the upper layer upper safety lever 3121 is hinged to the upper layer upper safety lever core shaft 3112 to form a lever structure with the safety lever core shaft 3112 as a fulcrum, the upper layer upper safety lever 3121 has an upper rotating end 31211, an upper rotating end 31212 and an upper arc surface 31213, and the upper rotating end 31211 and the upper rotating end 31212 can be regarded as a rotating end 1222 and a stopping end 1221 of the lever 122 in the unidirectional constant force compliance mechanism 200, respectively.
Go up rotation end 31211 and be connected with last rotation end 31212 through last arc cambered surface 31213, go up rotation end 31212 and insurance dabber 3111's global butt, when upper strata insurance driving lever 3121 carries out the lever and rotates, last arc cambered surface 31213 and insurance dabber 3111's global cambered surface contacts all the time, in this embodiment, go up rotation end 31212 and be the platykurtic, go up rotation end 31211 and be the wedge and the free end is the point to be located the near side of the edge of insurance gear 311, last arc cambered surface 31213 is the major arc for the cambered surface profile.
The lower layer safety-release deflector rod 3122 and the upper layer safety-release deflector rod 3121 have the same shape, the middle portion of the lower layer safety-release deflector rod 3122 is hinged to the lower layer safety-release deflector rod mandrel 3113 to form a lever structure using the lower layer safety-release deflector rod mandrel 3113 as a fulcrum, the lower layer safety-release deflector rod 3122 has a lower rotating end 31221, a lower stopping end 31222 and a lower arc cambered surface 31223, and the lower rotating end 31221 and the lower stopping end 31222 can be regarded as a rotating end 1222 and a stopping end 1221 of the deflector rod 122 in the unidirectional constant force compliance mechanism 200, respectively.
When the lower layer arming shift lever 3122 performs lever rotation, the lower arc 31223 is always in contact with the circumferential arc of the safety spindle 3111.
Two ends of the connecting spring 3123 are respectively installed at the upper stop end 31212 and the lower stop end 31222, or the upper stop end 31212 and the lower stop end 31222 are respectively connected with the safety spindle 3111 through two connecting springs 3123 in a resettable manner, the connecting spring 3123 is a constant force spring, and the connecting spring 3123 is a constant force spring 124 in the unidirectional constant force compliance mechanism 200.
The safety unit 320 comprises a safety turntable mandrel 321 and a safety turntable 322, and the safety turntable 322 is a bidirectional reset dial 210 in the symmetrical unidirectional constant-force compliant mechanism 200.
The safety dial spindle 321 is located near the safety gear 311 and parallel to the safety spindle 3111.
The center of gravity of the safety turntable 322 is hinged on the safety turntable mandrel 321, and the safety turntable 322 is provided with a shifting part 3221.
An electric safety relief bump 32212 and an electric upper safety bump 32211 are convexly arranged on one side of a toggle portion 3221 facing the double-layer toggle lever assembly 312, the electric safety relief bump 32212 and the electric upper safety bump 32211 are correspondingly arranged in the extending direction of the safety mandrel 3111 with the lower layer safety toggle lever 3122 and the upper layer safety toggle lever 3121 respectively, the electric safety relief bump 32212 and the electric upper safety bump 32211 are both flat and parallel to the mounting surface, the electric safety relief bump 32212 and the electric upper safety bump 32211 are adjacent to each other and form a fork shape, and a gap between the electric safety relief bump 32212 and the electric upper safety bump 32211 in the circumferential direction of the safety turntable 322 is a bidirectional toggle notch 211 in the symmetrical unidirectional constant force compliance mechanism 200.
During the rotation of the safety gear 311: when the upper rotating end 31211 contacts the edge of the electric upper safety bump 32211 to deform the corresponding constant force spring 124, or when the lower rotating end 31221 contacts the edge of the electric lower safety bump 32212 to deform the corresponding constant force spring 124, both the path of the upper rotating end 31211 sliding on the electric upper safety bump 32211 and the path of the lower rotating end 31221 sliding on the electric lower safety bump 32212 are the moving segments of the spring restoring force in the constant force spring force closing cam mechanism a.
< example two >
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the same description thereof is omitted.
The difference between the second embodiment and the first embodiment is that:
as shown in fig. 8, the constant force spring force closure cam mechanism a includes a moving rotating cam a1 ', a moving return spring a2 ', and a moving lever A3 '.
The moving rotating cam a1 ' is rotatably provided, and a moving return spring a2 ' is provided at one end of the moving lever A3 ' and has a moving contact roller a4 ' at the other end, the moving contact roller a4 ' is in contact with the profile of the moving rotating cam a1 ', and the moving return spring a2 ' serves to make the moving lever A3 ' perform a recoverable linear motion with respect to the moving rotating cam a1 '.
The moving return spring a2 'is a constant force spring, all contact paths formed by the moving contact roller A4' on the moving rotating cam a1 'are taken as a moving spring return force movement section, the lower limit of the reaction force of the moving contact roller A4' on the moving spring return force movement section of the moving rotating cam a1 'is zero, and the upper limit is the acting force of the moving contact roller A4' on the moving rotating cam a1 'caused by the spring return force corresponding to the constant force spring deformation critical length of the moving return spring a 2', so that the contact force of the moving contact roller A4 'and the moving rotating cam a 1' in the large stroke movement is prevented from linearly increasing with the stroke increase.
The above-described embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and changes can be made by those skilled in the art without inventive work within the scope of the appended claims.
Claims (6)
1. Constant force spring force closed cam mechanism, its characterized in that includes:
a rotating cam rotatably provided;
the cam oscillating bar is provided with a hinged end and a contact end, and the contact end is contacted with the profile of the rotating cam; and
a return spring disposed on the hinge end for causing a reversible rotational movement of the cam rocker about the hinge end,
wherein the return spring is a constant force spring,
and taking all contact paths formed by the contact end on the rotating cam as a spring restoring force movement section, wherein the lower limit of the reacting force of the contact end on the spring restoring force movement section of the rotating cam is zero, and the upper limit of the reacting force is the acting force of the cam swing rod on the rotating cam, which is caused by the spring restoring force corresponding to the constant force spring deformation critical length of the return spring.
2. One-way constant force compliance mechanism, its characterized in that includes:
a base;
the reset driving plate is arranged on the base in a resetting and rotating mode and is provided with a shifting notch; and
the toggle assembly is arranged near the reset dial and comprises a rotating rod, a toggle rod, a locking rod and a constant force spring,
wherein one end of the rotating rod is hinged on the base, the middle part of the shifting lever is hinged at the other end of the rotating rod, the locking rod is arranged on the rotating rod and is abutted against the shifting lever, one end of the shifting lever is connected with one end of the rotating rod through the constant force spring,
the locking bar is the limit of oscillation as set forth in claim 1,
when the locking lever abuts against the shift lever, the length of the constant force spring corresponds to the critical length of deformation of the constant force spring, and the constant force spring is the return spring described in claim 1,
the poking notch faces one end of the rotating rod, and when the rotating rod rotates by taking one end as a hinged point, the other end of the poking rod is contacted with the edge of the reset poking disc or extends into the poking notch,
when the other end of the shift lever contacts the edge of the reset dial plate to deform the constant force spring, all the travel paths of the other end of the shift lever on the reset dial plate are the spring restoring force motion section in claim 1.
3. Symmetrical one-way constant force compliance mechanism, its characterized in that includes:
a mechanism base;
the bidirectional reset drive plate is arranged on the mechanism base in a resetting and rotating mode and is provided with a bidirectional shift notch; and
a bi-directional toggle assembly comprising two toggle assemblies, the toggle assembly of claim 2,
the two toggle assemblies are positioned on the same mounting plane, one ends of the two rotating rods are hinged at the same point of the mechanism base,
the bidirectional shifting notch faces one end of the rotating rod, and when the rotating rod rotates by taking one end as a hinged point, the other end of one of the two shifting rods is in contact with the edge of the bidirectional reset dial or extends into the bidirectional shifting notch,
when the other end of the shift lever contacts the edge of the bidirectional reset dial plate to enable the corresponding constant force spring to deform, all travel paths of the other end of the shift lever on the bidirectional reset dial plate are the spring restoring force motion section in claim 1.
4. The symmetric unidirectional constant force compliant mechanism of claim 3, wherein:
wherein the included angle of the two rotating rods of the two toggle assemblies is a preset included angle, the two toggle assemblies are symmetrically arranged by taking one end of each rotating rod as a symmetrical center,
the cam mechanism is not limited to a double-layer deflector rod and a rotary driving plate, and can be configured with a plurality of layers of deflector rods and driving plate combinations, so that more flexible configuration can be realized, single-drive multi-output and large-stroke constant-force spring force closed cam mechanisms can be realized.
5. Two driving lever mechanisms of door lock, its characterized in that includes:
a double deflector rod unit; and a safety unit for preventing the safety of the vehicle,
the double-deflector rod unit comprises a safety gear and a double-layer deflector rod component,
the rotary lever according to any one of claims 3 to 4, wherein one end face of the safety gear is used as a mounting face,
the mounting surface is provided with a safety core shaft, an upper layer upper safety deflector rod core shaft and a lower layer lower safety deflector rod core shaft which are all vertically arranged,
the double-layer deflector rod assembly comprises an upper-layer upper-safety deflector rod, a lower-layer safety-release deflector rod and a constant force spring, wherein the upper-layer upper-safety deflector rod and the lower-layer safety-release deflector rod are deflector rods in any one of claims 3 to 4, and the constant force spring is the constant force spring in any one of claims 3 to 4,
the upper layer upper safety deflector rod and the lower layer safety release deflector rod are arranged along the extension direction of the safety mandrel, the length directions of the upper layer upper safety deflector rod and the lower layer safety release deflector rod are both vertical to the safety mandrel, the middle part of the upper layer upper safety deflector rod and the middle part of the lower layer safety release deflector rod are respectively hinged on the upper layer upper safety deflector rod mandrel and the lower layer safety release deflector rod mandrel, so that two lever structures are formed,
the upper layer upper safety deflector rod is provided with an upper rotating end and an upper stopping end, the lower layer lower safety deflector rod is provided with a lower rotating end and a lower stopping end, the upper stopping end and the lower stopping end are both abutted against the peripheral surface of the safety mandrel, two ends of the constant force spring are respectively arranged at the upper stopping end and the lower stopping end, or the upper stopping end and the lower stopping end are respectively connected with the safety mandrel in a resettable way through the two constant force springs,
the safety unit comprises a safety turntable mandrel and a safety turntable, the safety turntable is the bidirectional reset dial of any one of claims 3-4,
the safety turntable mandrel is positioned near the safety gear and is parallel to the safety mandrel,
the gravity center of the safety turntable is hinged on the safety turntable mandrel, the safety turntable is provided with a shifting part, one end of the safety push rod is arranged at the edge of the safety turntable, one side of the shifting part facing the double-layer shifting rod assembly is provided with an electric safety relief bump and an electric upper safety bump which are both arranged in a protruding manner, the gap between the electric safety relief bump and the electric upper safety bump in the circumferential direction of the safety turntable is the bidirectional shifting notch in any one of claims 3-4,
the electric fuse-releasing lug and the electric upper fuse-releasing lug are respectively arranged corresponding to the lower fuse-releasing driving lever and the upper fuse-releasing driving lever in the extending direction of the fuse core shaft,
when the upper rotating end contacts with the edge of the electric upper safety lug to deform the corresponding constant force spring, or when the lower rotating end contacts with the edge of the electric lower safety lug to deform the corresponding constant force spring, all the travel paths of the upper rotating end on the electric upper safety lug and all the travel paths of the lower rotating end on the electric lower safety lug are the spring restoring force motion section of claim 1.
6. The vehicle door lock dual lever mechanism of claim 5, wherein:
wherein, the upper layer upper safety deflector rod is also provided with an upper convex arc surface,
the upper rotating end is connected with the upper rotating end through an upper convex arc surface, when the upper layer upper safety deflector rod rotates in a lever mode, the upper convex arc surface is in contact with the circumferential surface arc surface of the safety mandrel,
the lower layer safety-release deflector rod is also provided with a lower convex arc surface,
the lower rotating end is connected with the upper rotating end through a lower convex arc surface, and when the lower layer safety release shift lever rotates in a lever mode, the lower convex arc surface is in contact with the circumferential surface arc surface of the safety mandrel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110518037.3A CN113374361B (en) | 2021-05-12 | 2021-05-12 | Forward flexible reverse rigid double-shift lever mechanism based on constant-force spring force closed cam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110518037.3A CN113374361B (en) | 2021-05-12 | 2021-05-12 | Forward flexible reverse rigid double-shift lever mechanism based on constant-force spring force closed cam |
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| CN113374361B CN113374361B (en) | 2022-07-01 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108056783A (en) * | 2017-11-08 | 2018-05-22 | 深圳先进技术研究院 | The automatic balancing arrangement and automatic balancing method of a kind of C-arm |
| CN109930922A (en) * | 2019-03-26 | 2019-06-25 | 上海工程技术大学 | The electric opening car door lock mechanism of the novel submissive compound secondary construction of variable freedom |
| CN110737953A (en) * | 2019-09-29 | 2020-01-31 | 山东理工大学 | Force balance-based compact constant-force spring support and hanger cam curve design method |
| CN110892125A (en) * | 2017-05-17 | 2020-03-17 | Adac塑模公司 | Resettable inertial lock assembly |
| US20200199913A1 (en) * | 2018-12-21 | 2020-06-25 | John Harris Sud | Retractable cable locking device |
| CN112594347A (en) * | 2020-12-11 | 2021-04-02 | 洛阳理工学院 | Interval constant force device capable of realizing stepless regulation |
-
2021
- 2021-05-12 CN CN202110518037.3A patent/CN113374361B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110892125A (en) * | 2017-05-17 | 2020-03-17 | Adac塑模公司 | Resettable inertial lock assembly |
| CN108056783A (en) * | 2017-11-08 | 2018-05-22 | 深圳先进技术研究院 | The automatic balancing arrangement and automatic balancing method of a kind of C-arm |
| US20200199913A1 (en) * | 2018-12-21 | 2020-06-25 | John Harris Sud | Retractable cable locking device |
| CN109930922A (en) * | 2019-03-26 | 2019-06-25 | 上海工程技术大学 | The electric opening car door lock mechanism of the novel submissive compound secondary construction of variable freedom |
| CN110737953A (en) * | 2019-09-29 | 2020-01-31 | 山东理工大学 | Force balance-based compact constant-force spring support and hanger cam curve design method |
| CN112594347A (en) * | 2020-12-11 | 2021-04-02 | 洛阳理工学院 | Interval constant force device capable of realizing stepless regulation |
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| CN113374361B (en) | 2022-07-01 |
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