CN108277757B - Overload protection device and parking spot lock - Google Patents
Overload protection device and parking spot lock Download PDFInfo
- Publication number
- CN108277757B CN108277757B CN201810193503.3A CN201810193503A CN108277757B CN 108277757 B CN108277757 B CN 108277757B CN 201810193503 A CN201810193503 A CN 201810193503A CN 108277757 B CN108277757 B CN 108277757B
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- gear
- rotating
- drum
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 97
- 230000005540 biological transmission Effects 0.000 claims abstract description 96
- 239000011148 porous material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
- E01F13/042—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage for controlling access to an individual parking space
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Transmission Devices (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention relates to the technical field of parking space locks, and provides an overload protection device, which comprises a base and further comprises: the first rotating shaft is arranged on the base; the second rotating shaft is arranged on the base; the transmission mechanism is arranged between the first rotating shaft and the second rotating shaft and is used for enabling the first rotating shaft and the second rotating shaft to form transmission connection; the protection mechanism is arranged between the transmission mechanism and the second rotating shaft and used for disconnecting transmission connection between the transmission mechanism and the second rotating shaft when overload occurs; and the driving mechanism is used for driving the second rotating shaft to rotate. According to the overload protection device provided by the invention, the first rotating shaft and the second rotating shaft are in transmission connection through the transmission mechanism, the protection mechanism is positioned between the transmission mechanism and the second rotating shaft, and when overload occurs, the protection mechanism breaks the transmission connection between the transmission mechanism and the second rotating shaft, so that the first rotating shaft, the second rotating shaft or the transmission mechanism is prevented from being damaged under the overload condition. The overload protection device is also applied to the parking spot lock.
Description
Technical Field
The invention belongs to the technical field of parking space locks, and particularly relates to an overload protection device and a parking space lock.
Background
With the increasing number of automobiles, the number of parking lots is also increased rapidly, and in order to ensure the safety of the automobiles parked on the parking lots, parking space locks are usually required to be arranged on the parking lots, however, when the automobiles carelessly collide with the parking space locks, a transmission mechanism in the parking space locks is easy to damage due to overload ("overload" means that the transmission mechanism exceeds the maximum transmissible load in the transmission process, in the transmission mechanism, such as gear transmission, the driving gear is assumed to drive a driven gear to rotate, and if the driven gear cannot drive the driven gear to normally rotate due to faults, the driving gear is called overload).
Disclosure of Invention
The invention aims to provide an overload protection device to solve the technical problem that a transmission mechanism in a parking spot lock is easy to damage under the overload condition in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: there is provided an overload protection apparatus comprising a base, further comprising:
the first rotating shaft is arranged on the base;
the second rotating shaft is arranged on the base;
The transmission mechanism is arranged between the first rotating shaft and the second rotating shaft and is used for enabling the first rotating shaft and the second rotating shaft to form transmission connection;
the protection mechanism is arranged between the transmission mechanism and the second rotating shaft and used for disconnecting transmission connection between the transmission mechanism and the second rotating shaft when overload occurs; and
and the driving mechanism is used for driving the second rotating shaft to rotate.
The invention also provides a parking spot lock, which comprises a baffle and the overload protection device, wherein the baffle is fixed on the first rotating shaft.
The overload protection device provided by the invention has the beneficial effects that: compared with the prior art, the overload protection device has the advantages that the first rotating shaft and the second rotating shaft are in transmission connection through the transmission mechanism, and the transmission connection can be that the first rotating shaft drives the second rotating shaft to rotate through the transmission mechanism or the second rotating shaft drives the first rotating shaft to rotate through the transmission mechanism. The protection mechanism is located between the transmission mechanism and the second rotating shaft, and when overload occurs, the protection mechanism disconnects the transmission connection between the transmission mechanism and the second rotating shaft, so that the first rotating shaft, the second rotating shaft or the transmission mechanism is prevented from being damaged under the overload condition. This overload protection device can also be applied to the parking stall lock.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of an overload protection device according to an embodiment of the present invention;
fig. 2 is an assembled perspective view of a third gear according to an embodiment of the present invention;
fig. 3 is an assembled perspective view of a second gear according to an embodiment of the present invention;
FIG. 4 is a perspective view of a ball mount according to an embodiment of the present invention;
FIG. 5 is a perspective view of a spring mount according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a ball and spring mounting provided by an embodiment of the present invention;
FIG. 7 is a schematic front view of a ball and spring mounting provided by an embodiment of the present invention;
fig. 8 is a schematic perspective view of a second gear according to an embodiment of the present invention;
FIG. 9 is a schematic view of an installation cross section of a second gear according to an embodiment of the present invention;
FIG. 10 is a schematic diagram illustrating the installation of a latch according to an embodiment of the present invention;
FIG. 11 is a second schematic diagram illustrating installation of a latch according to an embodiment of the present invention;
FIG. 12 is a third schematic view of the installation of a latch according to an embodiment of the present invention;
FIG. 13 is a schematic diagram illustrating installation of a reset assembly according to an embodiment of the present invention;
fig. 14 is a schematic perspective view of a reset assembly according to an embodiment of the present invention;
fig. 15 is a schematic perspective view of a reset assembly according to a second embodiment of the present invention;
FIG. 16 is a schematic diagram illustrating an installation of a torsion spring according to an embodiment of the present invention;
FIG. 17 is a second schematic diagram illustrating the installation of a torsion spring according to an embodiment of the present invention;
FIG. 18 is a schematic view of the installation of a spool and wheel provided by an embodiment of the present invention;
fig. 19 is a schematic front view of a runner according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It should be understood that the terms "top," "bottom," "inner," "outer," and the like indicate and are used in a manner based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 and 2 together, an overload protection apparatus provided by the present invention will now be described. Overload protection device, including base 1, still includes: the first rotary shaft 42, the second rotary shaft 21, a transmission mechanism (not shown), a protection mechanism (not shown), and a driving mechanism (not shown).
The first rotating shaft 42 is arranged on the base 1;
the second rotating shaft 21 is arranged on the base 1;
the transmission mechanism is arranged between the first rotating shaft 42 and the second rotating shaft 21 and is used for enabling the first rotating shaft and the second rotating shaft to form transmission connection;
the protection mechanism is arranged between the transmission mechanism and the second rotating shaft 21 and is used for disconnecting the transmission connection between the transmission mechanism and the second rotating shaft 21 when in overload; and
the driving mechanism is used for driving the second rotating shaft 21 to rotate.
In this embodiment, the first rotating shaft 42 and the second rotating shaft 21 form a transmission connection through a transmission mechanism, and the transmission connection may be that the first rotating shaft 42 drives the second rotating shaft 21 to rotate through the transmission mechanism, or that the second rotating shaft 21 drives the first rotating shaft 42 to rotate through the transmission mechanism. The protection mechanism is located between the transmission mechanism and the second shaft 21, and is in overload (here, "overload" means a condition that the first shaft 42 is overloaded when the second shaft 21 cannot rotate and the second shaft 21 is continuously operated when the first shaft 42 cannot rotate and the transmission mechanism is not overloaded when the second shaft 21 drives the first shaft 42, or a condition that the first shaft 42 cannot rotate and the second shaft 21 is continuously overloaded when the first shaft 42 drives the second shaft 21, more specifically, assuming that the transmission mechanism is a gear set (not shown), the transmission mechanism is disconnected from the transmission mechanism and the second shaft 21 when the first shaft 42 rotates the second shaft 21 through the gear set, or the second shaft 21 is overloaded when the second shaft 21 cannot rotate and the first shaft 42 is continuously output power to the first shaft 42 through the gear set.
Specifically, in one embodiment, the protection mechanism adopts a clutch-like structure to disconnect or connect the transmission mechanism from the second rotating shaft 21, and is disconnected by the protection mechanism when the transmission mechanism needs to be disconnected from the second rotating shaft 21, and is connected by the protection mechanism when the transmission mechanism needs to be transmitted from the second rotating shaft 21.
In another embodiment, the protection mechanism may be an elastic component (not shown) capable of elastic deformation, and when overload occurs, the elastic component elastically deforms and enables the transmission mechanism to be separated from the second rotating shaft 21; after the overload has disappeared, the elastic assembly resumes the initial position and the transmission is made to resume the transmission connection with the second shaft 21. For example, the elastic component may be a spring (not shown) respectively abutting against the transmission mechanism and the second rotating shaft 21, and when there is no overload, the transmission mechanism is clamped on the second rotating shaft 21 through the spring and is in transmission connection with the second rotating shaft 21; when overload occurs, the elastic sheet deforms, so that the transmission mechanism is separated from the second rotating shaft 21 to disconnect the transmission connection. Of course, in other embodiments, the protection mechanism may be other structures, as long as the protection mechanism can disconnect the transmission connection between the transmission mechanism and the second rotating shaft 21 in the event of overload, which is not limited only herein.
Wherein, optionally, the first rotary shaft 42 and the second rotary shaft 21 rotate around respective axes.
Alternatively, the drive mechanism is a motor 27.
Further, referring to fig. 3 to 9, as a specific embodiment of the overload protection device provided by the present invention, the transmission mechanism includes a first gear 22 disposed on the first rotating shaft 42 and a second gear 452 sleeved on the second rotating shaft 21 and connected to the first gear 22 in a transmission manner, and a receiving cavity 211 is disposed on a surface of the second rotating shaft 21; the protection mechanism comprises a ball 23 arranged in the accommodating cavity 211 of the second rotating shaft 21 and an elastic piece (not shown) connected between the ball 23 and the bottom surface of the accommodating cavity 211, wherein at least part of the ball 23 extends out of the accommodating cavity 211 and is propped against the inner wall of the second gear 452; a recess 221 in which the ball 23 slides in and out is formed in a recess on an inner wall of the second gear 452.
Thus, when the ball 23 slides into the recess 221, the elastic member pushes the ball 23 against the recess 221 (the ball 23 pushes against the inner sidewall of the second gear 452, and the inner sidewall of the recess 221 is also a part of the inner sidewall of the second gear 452), which is equivalent to that the ball 23 is clamped in the recess 221, the ball 23 can limit the relative rotation between the second gear 452 and the second rotating shaft 21, and the second rotating shaft 21 drives the second gear 452 to rotate through the ball 23, or the second gear 452 drives the second rotating shaft 21 to rotate through the ball 23. When overload occurs, for example, when the second gear 452 cannot rotate and the second rotating shaft 21 continues to rotate due to a fault, the force exerted on the balls 23 by the second rotating shaft 21 can drive the balls 23 to disengage from the recess 221, and once the balls 23 leave the recess 221, the second rotating shaft 21 and the second gear 452 can rotate relatively. When the second rotating shaft 21 and the second gear 452 relatively rotate, the second rotating shaft 21, the second gear 452 or other structures are not damaged, so that the safety of the overload protection device is ensured. When the factor that hinders the rotation of the second gear 452 disappears, the ball 23 can slide into the recess 221 again, and the second rotating shaft 21 drives the second gear 452 to rotate through the ball 23, or the second gear 452 drives the second rotating shaft 21 to rotate through the ball 23. Conversely, when the second shaft 21 cannot rotate and the second gear 452 continues to rotate due to a failure in overload, the force exerted by the second gear 452 on the balls 23 can drive the balls 23 to disengage from the recess 221, and once the balls 23 leave the recess 221, the second shaft 21 and the second gear 452 can rotate relatively. When the second rotating shaft 21 and the second gear 452 relatively rotate, the second rotating shaft 21, the second gear 452 or other structures are not damaged, so that the safety of the overload protection device is ensured.
Wherein optionally, in an embodiment, a third gear 25 is disposed on the second rotating shaft 21, the third gear 25 is meshed with the first gear 22, and the second gear 452 is in driving connection with the motor 27. That is, the motor 27 drives the second rotating shaft 21 to rotate through the second gear 452, the second rotating shaft 21 drives the third gear 25 to rotate, the third gear 25 drives the first gear 22 to rotate, the first gear 22 drives the first rotating shaft 42 to rotate, and vice versa; in another embodiment, the first gear 22 is directly engaged with the second gear 452, that is, the second shaft 21 sequentially passes through the second gear 452 and the first gear 22 to rotate the first shaft 42, and vice versa.
Wherein, optionally, in one embodiment, the first gear 22 is fixed to the first shaft 42; in another embodiment, other connecting members are also provided between the first gear 22 and the first shaft 42. So long as a driving connection can be formed between the first gear 22 and the first shaft 42, this is not limited only.
In this embodiment, the elastic member is connected between the ball 23 and the bottom surface of the accommodating chamber 211. And the elastic member is for pressing the balls 23 against the inner wall of the second gear 452.
In this embodiment, the surface of the second rotating shaft 21 is provided with a receiving cavity 211, and optionally, the receiving cavity 211 is formed by recessing the surface of the second rotating shaft 21.
Wherein optionally, in one embodiment, the protection mechanism is used to limit the relative rotation of the second rotating shaft 21 and the second gear 452 and disengage the second rotating shaft 21 and the second gear 452 when overloaded. Optionally, in one embodiment, the protection mechanism includes an elastic deformation portion (not shown) disposed between the second shaft 21 and the second gear 452, where the elastic deformation portion can connect the second shaft 21 and the second gear 452, and the elastic deformation portion can elastically deform and disengage the second shaft 21 from the second gear 452 when overload occurs. Of course, the protection mechanism may take other forms in other embodiments, as long as the protection mechanism is capable of restricting the relative rotation of the second rotation shaft 21 and the second gear 452 and disengaging the second rotation shaft 21 and the second gear 452 from each other when overloaded. Here, "overload" refers in particular to: assuming that the second rotating shaft 21 drives the second gear 452 to rotate, if the second gear 452 cannot rotate due to a fault, the second rotating shaft 21 cannot drive the second gear 452 to normally rotate; or vice versa, if the second gear 452 drives the second rotating shaft 21 to rotate, the second gear 452 cannot drive the second rotating shaft 21 to rotate normally if the second rotating shaft 21 cannot rotate due to a fault.
Further, referring to fig. 3 to 9, as a specific embodiment of the overload protection device provided by the present invention, the number of the concave portions 221 is plural, the plurality of concave portions 221 are uniformly distributed along the circumference of the inner side wall of the second gear 452, a convex portion (not shown) is formed between two adjacent concave portions 221, the surface of the convex portion is a cambered surface, and the cambered surface is tangent to the inner side surfaces of the two adjacent concave portions 221 respectively. In this way, when the balls 23 are separated from one of the concave portions 221, they do not need to roll along the inner side wall of the second gear 452 for one turn and then enter the concave portion 221 again, thereby saving a lot of time. The concave parts 221 uniformly distributed on the inner side wall of the second gear 452 can enable the balls 23 to enter into the other concave part 221 from one concave part 221 in the same time interval when the second rotating shaft 21 and the second gear 452 relatively rotate, so that the stability of the second rotating shaft 21 and the second gear 452 during the relative rotation is ensured. In this way, when the balls 23 slide out of one recess 221 into another recess 221 smoothly and excessively, the balls 23 do not get stuck at the edge of the inner wall of the recess 221 or between the adjacent two recesses 221.
Further, referring to fig. 3 to 9, as a specific embodiment of the overload protection device provided by the present invention, the accommodating cavity 211 extends along the radial direction of the second rotating shaft 21, the elastic member is a spring 212 that stretches along the radial direction of the second rotating shaft 21, the spring 212 is located in the accommodating cavity 211, and two ends of the spring 212 are respectively abutted against the ball 23 and the inner wall of the accommodating cavity 211. In this way, the accommodating chamber 211 provides a moving path for the balls 23 to move radially toward the second rotating shaft 21, and the extending direction of the accommodating chamber 211 is the radial direction of the second rotating shaft 21, so that the balls 23 can move along the radial direction of the second rotating shaft 21 when moving in the accommodating chamber 211. During the process of the ball 23 entering the recess 221 and sliding out of the recess 221, the ball 23 moves in the radial direction of the second rotating shaft 21, the distance between the ball 23 and the second rotating shaft 21 changes, and the ball 23 enters the accommodating cavity 211 and slides along the accommodating cavity 211 to change the distance between the ball 23 and the second rotating shaft 21. In addition, the ball 23 is located in the accommodating cavity 211, and a part of the ball 23 extends out of the accommodating cavity 211 and abuts against the inner wall of the gear, when the ball 23 rolls, the ball 23 can always abut against the inner wall of the accommodating cavity 211, and the inner wall of the accommodating cavity 211 provides a pushing force for the ball 23 to realize the movement of the ball 23 along the inner wall of the gear. Thus, with respect to the second rotating shaft 21, when the balls 23 slide out of the concave portions 221, the balls 23 move along the accommodating cavity 211 in a direction approaching to the second rotating axis of the second rotating shaft 21, and at this time, the balls 23 compress the springs 212; conversely, as the ball 23 slides into the recess 221, the spring 212 begins to elongate and push the ball 23 into the recess 221. Whether the spring 212 is extended or compressed, the spring 212 is effective to reliably abut the balls 23 against the inner side walls of the gear.
Optionally, an opening 2111 is formed on the surface of the second rotating shaft 21, and the balls 23 can enter the accommodating cavity 211 through the opening 2111, however, in other embodiments, the balls 23 can enter the accommodating cavity 211 in other manners, which is not limited only herein.
Further, referring to fig. 3 to 9, as an embodiment of the overload protection apparatus provided by the present invention, the cross section of the accommodating cavity 211 is circular, and the diameter of the cross section is the same as the diameter of the ball 23.
In the present embodiment, the cross section of the accommodation chamber 211 is circular, and the diameter of the cross section is the same as that of the balls 23. In this way, when the balls 23 move in the accommodation chamber 211, the balls 23 are prevented from shaking in the accommodation chamber 211. In particular the balls 23 vibrate in the radial direction of the housing cavity 211.
Further, referring to fig. 3 to 9, as an embodiment of the overload protection apparatus provided by the present invention, a stop assembly (not shown) for preventing the balls 23 from sliding out of the recess 221 along the axial direction of the second rotating shaft 21 is disposed on the second gear 452. The stop assembly includes a stop ring 223 and an annular flange 222 formed by protruding the inner side wall of the second gear 452 towards the second rotating shaft 21 and annularly arranged on the outer side of the second rotating shaft 21, the stop ring 223 is rotatably sleeved on the second rotating shaft 21, the concave part 221 is positioned between the annular flange 222 and the stop ring 223, the stop ring 223 is abutted on the second gear 452, and a limiting mechanism (not shown) for preventing the annular flange 222 and the stop ring 223 from moving along the axial direction of the second rotating shaft 21 is arranged on the second rotating shaft 21.
In this way, the second gear 452 is located between the annular flange 222 and the stop ring 223, and since the annular flange 222 is connected to the second gear 452, the stop ring 223 abuts against the second gear 452, and a limiting mechanism for preventing the annular flange 222 and the stop ring 223 from moving axially along the second rotating shaft 21 is further provided on the second rotating shaft 21, and by limiting the limiting mechanism, both the annular flange 222 and the stop ring 223 cannot move axially on the second rotating shaft 21, and the second gear 452 and the annular flange 222 are fixed, so that the second gear 452 cannot move axially along the second rotating shaft 21.
Alternatively, the stop assembly may be a baffle disposed on the second gear 452 or a ledge disposed on the second gear 452. In other embodiments, the stop assembly may have other structures, as long as the stop assembly can prevent the balls 23 from sliding out of the recess 221 from the axial direction of the second rotating shaft 21.
Further, referring to fig. 3 to 9, as a specific embodiment of the overload protection device provided by the present invention, the limiting mechanism includes two clamping grooves extending along the circumferential direction of the second rotating shaft 21 and two clamping springs 242 respectively and correspondingly clamped in the two clamping grooves, the annular flange 222 and the stop ring 223 are respectively located between the two clamping springs 242, one clamping spring 242 is abutted on the annular flange 222, and the other clamping spring 242 is abutted on the stop ring 223. In this way, the annular flange 222, the stop ring 223 and the second gear 452 cannot move in the axial direction of the second rotation shaft 21 under the restriction of the two snap springs 242. The annular flange 222, the stop ring 223 and the second gear 452 can be easily moved axially along the second rotation shaft 21 if the snap spring 242 is removed.
Further, referring to fig. 13 to 19, as an embodiment of the overload protection apparatus provided by the present invention, a reset assembly (not shown) is disposed on the first rotating shaft 42 for recovering to an initial relative position when the first rotating shaft 42 and the first gear 22 rotate relatively. Thus, under the action of external force, after the first rotating shaft 42 and the first gear 22 rotate relatively, the reset assembly can enable the first rotating shaft 42 and the first gear 22 to restore to the initial relative position. "initial relative position" refers to: the relative position between the first rotation shaft 42 and the first gear 22 is not subject to an external force. The position may be a specific relative position, or may be a section in which the resetting component does not affect the first rotating shaft 42 or the first gear 22 when the first rotating shaft 42 and the first gear 22 relatively rotate.
Further, referring to fig. 13 to 19, as an embodiment of the overload protection apparatus provided by the present invention, the reset assembly includes: a drum 43 and a braking mechanism (not shown).
The rotary drum 43 is sleeved on the first rotary shaft 42 and can rotate relative to the first rotary shaft 42, the rotary drum 43 is sleeved with a torsion spring 44, the torsion spring 44 is provided with a first connecting end 441 and a second connecting end 442, and the first rotary shaft 42 is provided with a first protruding part 421 and a second protruding part 422; when the first rotating shaft 42 rotates in a first direction (not shown) relative to the drum 43, the first protruding portion 421 abuts against the first connecting end 441 and drives the first connecting end 441 to rotate along the circumferential direction of the drum 43 so as to increase the torque of the torsion spring 44; when the first rotating shaft 42 rotates in a second direction (not shown) opposite to the first direction relative to the drum 43, the second protruding portion 422 abuts against the second connecting end 442 and drives the second connecting end 442 to rotate along the circumferential direction of the drum 43 to increase the torque of the torsion spring 44;
The brake mechanism is used to lock the drum 43 to prevent relative rotation between the drum 43 and the base 1.
Thus, when the brake mechanism locks the drum 43, the first boss 421 abuts on the first connection end 441 and drives the first connection end 441 to move in the circumferential direction of the drum 43 to increase the torque of the torsion spring 44 when the first rotation shaft 42 rotates in the first direction relative to the drum 43 under the action of the external force. At this time, if the external force is removed, the first rotation shaft 42 rotates in a direction opposite to the first direction with respect to the drum 43 under the action of the torsion spring 44; similarly, when the brake mechanism locks the drum 43, the first shaft 42 rotates relative to the drum 43 in a second direction opposite to the first direction under the action of the external force, the second boss 422 abuts against the second connection end 442 and drives the second connection end 442 to move along the circumferential direction of the drum 43 to increase the torque of the torsion spring 44. At this time, if the external force is removed, the first rotation shaft 42 is rotated in a direction opposite to the second direction with respect to the drum 43 by the torsion spring 44. That is, the torque of the torsion spring 44 is increased regardless of whether the first shaft 42 rotates in the first direction or the second direction relative to the drum 43, the external force for driving the first shaft 42 to rotate relative to the drum 43 is removed, and the first shaft 42 can be rotated to the initial position (initial position refers to the relative position between the first shaft 42 and the drum 43 when the first shaft 42 and the drum 43 are not subjected to the external force), so that when the drum 43 cannot rotate, the relative position between the first shaft 42 and the drum 43 can be buffered by the torsion spring 44 after the external force is changed, and the relative position between the first shaft 42 and the drum 43 can be easily reset after the external force is removed, thereby avoiding damage to the first shaft 42, the drum 43 and other transmission members (not shown) in transmission relation with the first shaft 42 or the drum 43 when the first shaft 42 and the drum 43 are relatively rotated.
Wherein, optionally, the initial position is a specific position of the first rotating shaft 42 opposite to the rotating drum 43, for example, when the first rotating shaft 42 is at a certain relative position with the rotating drum 43, under the action of the torsion spring 44, the torsion of the torsion spring 44 is increased by the rotation of the first rotating shaft 42 in the first direction or the second direction relative to the rotating drum 43; in another embodiment, the initial position may be a section, for example, when the first shaft 42 rotates relative to the drum 43 within the section, the first shaft 42 is not acted upon by the torsion spring 44, and the torsion of the torsion spring 44 is increased only when the first shaft 42 rotates relative to the drum 43 in the first direction and exceeds the section. Similarly, the torque of the torsion spring 44 increases only when the first shaft 42 rotates in the second direction relative to the drum 43 beyond the above-described interval. After the influence of the external force on the first shaft 42 and the drum 43 is removed, the relative positions of the first shaft 42 and the drum 43 are returned to the above section. That is, when the relative position of the first shaft 42 and the drum 43 is within the above-mentioned interval, the first protruding portion 421 and the first connecting end 441 are not in contact all the time, and the second protruding portion 422 and the second connecting end 442 are not in contact all the time. Optionally, when the first rotating shaft 42 is opposite to the drum 43 in the above interval, the first connecting end 441 and the second connecting end 442 respectively abut against the drum 43, so that the first connecting end 441 is prevented from moving along the circumferential direction of the drum 43 under the elastic force of the torsion spring 44 due to the first connecting end 441 not abutting against the first protruding portion 421; similarly, it is avoided that the second connection end 442 does not abut against the second protrusion 422, so that the second connection end 442 moves along the circumferential direction of the drum 43 by itself under the elastic force of the torsion spring 44.
Wherein in the present embodiment the brake mechanism is capable of locking the drum 43 to prevent relative rotation between the drum 43 and the base 1. Optionally, a snap-fit structure (not shown) is provided between the base 1 and the drum 43, which can conveniently fix or separate the drum 43 and the base 1 from each other.
Further, referring to fig. 13 to 19, as an embodiment of the overload protection apparatus provided by the present invention, the first gear 22 is disposed at one end of the drum 43, and the rotating wheel 32 is disposed at the other end of the drum 43; the rotating wheel 32 and the first gear 22 are respectively sleeved on the first rotating shaft 42, a first slot 4511 extending along the circumferential direction of the rotating drum 43 is formed in the rotating wheel 32, a second slot 4521 extending along the circumferential direction of the rotating drum 43 is formed in the first gear 22, the first connecting end 441 passes through the first slot 4511, and the second connecting end 442 passes through the second slot 4521. Thus, when the first protruding portion 421 pushes the first connecting end 441 to move along the first slot 4511, the first connecting end 441 also rotates along the circumferential direction of the drum 43 because the first slot 4511 extends along the circumferential direction of the drum 43. In addition, when the first protruding portion 421 is not abutted against the first connecting end 441, the first connecting end 441 is abutted against the inner wall of the first slot 4511 under the action of the torsion spring 44, even if the second protruding portion 422 drives the second connecting end 442 to rotate along the circumferential direction of the drum 43, the position of the first connecting end 441 is not affected, i.e. the inner wall of the first slot 4511 can support the first connecting end 441. Similarly, when the second protrusion 422 pushes the second connecting end 442 to move along the second slot 4521, the second connecting end 442 rotates along the circumferential direction of the drum 43 because the second slot 4521 extends along the circumferential direction of the drum 43. In addition, when the second protruding portion 422 is not abutted against the second connecting end 442, the second connecting end 442 is abutted against the inner wall of the second slot 4521 under the action of the torsion spring 44, and even if the first protruding portion 421 drives the first connecting end 441 to move, the position of the second connecting end 442 is not affected, i.e. the inner wall of the second slot 4521 can support the second connecting end 442.
Further, referring to fig. 13 to 19, as an embodiment of the overload protection apparatus provided in the present invention, the first connection end 441 extends toward the axial direction of the first rotating shaft 42; and/or the second connection end 442 extends axially toward the first shaft 42.
In this embodiment, the first protruding portion 421 is disposed on the first rotating shaft 42, and when the first rotating shaft 42 rotates, the first protruding portion 421 is driven to rotate along the circumferential direction of the first rotating shaft 42, and the first connecting end 441 extends along the axial direction of the first rotating shaft 42, so that the distance between the first connecting end 441 and the first rotating shaft 42 is stable when the first connecting end 441 rotates circumferentially around the rotating shaft 43, and the stability of the first protruding portion 421 on the first rotating shaft 42 driving the first connecting end 441 to move circumferentially around the rotating shaft 43 is ensured. Similarly, the second protruding portion 422 is disposed on the first rotating shaft 42, when the first rotating shaft 42 rotates, the second protruding portion 422 is driven to rotate along the circumferential direction of the first rotating shaft 42, and the second connecting end 442 extends along the axial direction of the first rotating shaft 42, so that the distance between the second connecting end 442 and the first rotating shaft 42 is stable when the second connecting end 442 rotates around the circumferential direction of the rotating drum 43, and the stability of the second protruding portion 422 on the first rotating shaft 42 driving the second connecting end 442 to move along the circumferential direction of the rotating drum 43 is ensured.
Further, referring to fig. 13 to 19, as an embodiment of the overload protection apparatus provided in the present invention, the rotating wheel 32 is detachably and fixedly connected to the drum 43. In this manner, the rotor 32 and drum 43 are easily installed or disassembled.
Further, referring to fig. 13 to 19, as a specific embodiment of the overload protection device provided by the present invention, a groove 4512 is concavely formed on an inner wall of the rotating wheel 32, and an engaging portion 431 is formed at one end of the rotating drum 43, wherein the engaging portion 431 is engaged into the groove 4512. Thus, a snap connection is formed by snapping the snap portion 431 at one end of the drum 43 into the recess 4512 of the wheel 32, i.e. the drum 43 rotates by the snap connection when rotated. When the drum 43 and the rotating wheel 32 need to be disassembled, the clamping part 431 only needs to be pulled out of the groove 4512, which is very convenient.
Further, referring to fig. 13 to 19, as a specific embodiment of the overload protection apparatus provided by the present invention, the first protruding portion 421 is cylindrical, and the axis of the first protruding portion 421 and the axis of the first rotating shaft 42 are perpendicular to each other; the second protruding portion 422 is cylindrical, and the axis of the second protruding portion 422 and the axis of the first rotating shaft 42 are perpendicular to each other. Thus, when the first protruding portion 421 abuts against the first connecting end 441 and pushes the first connecting end 441 to move, if the first connecting end 441 of the torsion spring 44 bends, the first connecting end 441 and the first protruding portion 421 will not be damaged during the abutting process because the outer surface of the first protruding portion 421 is a cylindrical surface. Similarly, when the second protruding portion 422 abuts against the second connecting end 442 and pushes the second connecting end 442 to move, if the second connecting end 442 of the torsion spring 44 bends, the second connecting end 442 and the second protruding portion 422 will not be damaged during the abutting process of the second connecting end 442 and the second protruding portion 422 due to the cylindrical surface of the outer surface of the second protruding portion 422.
Referring to fig. 13 to 19, as a specific embodiment of the overload protection apparatus provided by the present invention, a limit screw 46 for abutting against the first boss 421 when the first rotating shaft 42 and the rotating drum 43 rotate relatively is provided on the outer end surface of the rotating wheel 32. In this manner, the stop screw 46 is effective to control the range of angles of relative rotation between the first shaft 42 and the wheel 32.
Further, referring to fig. 13 to 19, as an embodiment of the overload protection apparatus provided by the present invention, an alarm (not shown) for alarming when the first boss 421 touches the limit screw 46 is further included, and the alarm is disposed on the base 1. Thus, the alarm sounds an alarm to alert the user when the first boss 421 touches the limit screw 46. The alarm may be triggered by using the first protruding portion 421 and the limit screw 46 as a switch, that is, when the first protruding portion 421 touches the limit screw 46, the alarm is turned on and the alarm starts to sound an alarm, and when the first protruding portion 421 is separated from the limit screw 46, the alarm is turned off and the alarm is turned off.
Further, referring to fig. 13 to 19, as an embodiment of the overload protection apparatus provided by the present invention, the first rotating shaft 42 is disposed coaxially with the drum 43. Thus, the first rotating shaft 42 and the rotating drum 43 can maintain a stable positional relationship in the process of relative rotation.
Further, referring to fig. 10 to 12, as an embodiment of the overload protection apparatus provided by the present invention, the braking mechanism includes: a latch 33 and a driver (not shown).
The latch 33 is slidably disposed on the base 1, one end of the latch 33 has a fastening portion 331, and an edge of the rotating wheel 32 has at least one notch 321 for inserting and extracting the fastening portion 331; and
the driver is used for driving the latch 33 to move relative to the rotating wheel 32 and limiting the rotating wheel 32 to rotate when the fastening part 331 is inserted into the notch 321.
Thus, when the latch 33 is inserted into the notch 321, the latch 33 prevents the rotating wheel 32 from rotating; when the latch 33 is pulled out of the notch 321, the latch 33 releases control of the wheel 32. When the rotating wheel 32 is subjected to strong impact, the bolt 33 is rigid, so that the bolt 33 is not easy to deform and rotate under the driving of the rotating wheel 32, and the bolt 33 can effectively prevent the rotating wheel 32 from rotating.
Optionally, the shape of the fastening portion 331 is adapted to the notch 321. The term "fit" refers to that the shape of the fastening portion 331 and the notch 321 can be matched. Thus, the latch 33 controls the rotation of the rotating wheel 32 through the cooperation of the fastening part 331 and the notch 321.
Further, referring to fig. 10 to 12, as a specific embodiment of the overload protection apparatus provided by the present invention, the bolt 33 extends in a radial direction of the rotating wheel 32, the bolt 33 can slide on the base 1 along the extending direction, the base 1 has a supporting portion 311, and a hole (not shown) extending in the radial direction of the rotating wheel 32 and allowing the bolt 33 to pass through is formed in the supporting portion 311. In this way, the latch 33 can very simply insert the catch 331 into the notch 321 to prevent the rotation of the wheel 32 when sliding on the base 1 in the extending direction and approaching the wheel 32; of course, the latch 33 can be very simply removed from the notch 321 to release the rotation restriction of the rotating wheel 32 when sliding on the base 1 in the extending direction and away from the rotating wheel 32. Thus, the movement of the pin 33 along the bore conveniently causes the pin 33 to move in the radial direction of the wheel 32. In addition, the inner wall of the duct can also effectively restrict the movement of the plug 33 in the radial direction of the plug 33.
Further, referring to fig. 10 to 12, as an embodiment of the latch 33 device provided by the present invention, a guide ring 332 sleeved on the latch 33 is disposed between the latch 33 and the inner wall of the hole.
In the present embodiment, the guide ring 332 is sleeved on the plug 33, and the guide ring 332 is located between the plug 33 and the inner wall of the hole, so that the guide ring 332 can play a role in positioning the plug 33 (here, "positioning" means that the movement of the plug 33 in the radial direction is limited between the inner walls of the guide ring 332), and at the same time, the guide ring 332 can play a role in guiding the movement of the plug 33 when the plug 33 moves along the axis thereof.
Further, in one embodiment, the cross-section of the aperture is the same as the cross-section of the latch 33. Thus, the plug 33 is not easily rocked in the radial direction thereof when the plug 33 moves in the hole.
Further, referring to fig. 10 to 12, as a specific embodiment of the overload protection device provided by the present invention, an elastic unit 34 is disposed on the base 1, and two ends of the elastic unit 34 are respectively abutted against the latch 33 and the base 1. In this way, the elastic unit 34 always abuts the latch 33 in the notch 321 on the rotating wheel 32 to limit the rotation of the rotating wheel 32 under the condition that no other external force is applied to the latch 33. When the bolt 33 is pulled out of the notch 321 of the rotating wheel 32 under the influence of external force, the bolt 33 compresses the elastic unit 34 in the pulling-out process, and if the external force is removed, the bolt 33 is abutted on the rotating wheel 32 again under the action of the elastic unit 34, so that the control of the bolt 33 on the rotating wheel 32 is ensured. Alternatively, the extending direction of the elastic unit 34 is the same as the extending direction of the latch 33. The elastic unit 34 and the rotating wheel 32 are respectively positioned at opposite ends of the latch 33, so that the elastic unit 34 can conveniently push the latch 33 to move in the extending direction thereof during the compression and extension processes.
Further, referring to fig. 10 to 12, as a specific embodiment of the overload protection device provided by the present invention, an abutment portion 312 is protruded on the base 1, a blind hole (not shown) is formed on the abutment portion 312, and one end of the elastic unit 34 is disposed in the blind hole and abuts against an inner wall of the blind hole. In this way, one end of the elastic unit 34 is disposed in the blind hole, and the elastic unit 34 is not easy to shake in the radial direction during the compression and extension process of the elastic unit 34, so that the elastic unit 34 can maintain a stable abutting relationship with the abutting portion 312.
Further, referring to fig. 10 to 12, as an embodiment of the overload protection apparatus provided by the present invention, the driver includes a connection member 351 and a driving system (not shown), wherein the driving system includes a transmission portion 352 disposed offset from a rotation axis (not shown) and a driving unit (not shown) for driving the transmission portion 352 to rotate around the rotation axis, the rotation axis is disposed in the same plane as the axis of the latch 33 and perpendicular to the rotation axis, one end of the connection member 351 is hinged to the latch 33, and the other end is hinged to the transmission portion 352. In this way, since the rotation axis and the axis of the latch 33 are located on the same plane and are vertically disposed, the driving unit drives the transmission portion 352 to rotate around the rotation axis, and in the extending direction of the latch 33, the transmission portion 352 can approach and separate from the rotating wheel 32. In the extending direction of the latch 33, when the transmission portion 352 approaches the wheel 32, the transmission portion 352 moves toward the wheel 32 through the link 351 latch 33; when the drive portion 352 moves away from the wheel 32, the latch 33 moves away from the wheel 32.
Further, referring to fig. 1 and 2 and fig. 10 to 12, as a specific embodiment of the overload protection apparatus provided by the present invention, the limiting member 263 is also disposed offset from the rotation axis, and the third gear 25 is provided with a first flange 261 for enabling the limiting member 263 to rotate about the rotation axis within a range of 0 ° to 90 ° relative to the third gear 25, that is, the limiting member 263 does not touch the first flange 261 within a rotation range of 90 °. In this way, when the third gear 25 cannot rotate, the transmission portion 352 also rotates about the axis within the range of 0 ° to 90 ° under the restriction of the first flange 261. The fastening portion 331 is fastened into the notch 321 when the transmission portion 352 is at the 0 ° position, and the fastening portion 331 is pulled out of the notch 321 when the transmission portion 352 is at the 90 °. The latch 33 no longer locks the wheel 32, the first gear 22 and the third gear 25 can be driven by each other, alternatively the first gear 22 and the third gear 25 are of the same size, i.e. the first gear 22 and the third gear 25 are driven by each other and simultaneously rotate by the same rotation angle. When the fastening portion 331 is pulled out from the notch 321, if the third gear 25 drives the first gear 22 to continue to rotate until the rotation is continued by 90 °, at this time, the transmission portion 352 rotates 180 ° from the position of 0 ° at the beginning, and the fastening portion 331 is fastened into the notch 321 again, so that the rotation of the wheel 32 is prevented. In this process (the locking portion 331 locks the wheel 32 from locked to unlocked to locked), the first rotating shaft 42 rotates by 90 °, and if the barrier of the parking space lock is provided on the first rotating shaft 42, the barrier is changed from the flat state to the upright state. If the whole process is reversed, the baffle plate is changed from the erect state to the flat state.
Further, the third gear 25 is further provided with a second flange 262 for preventing the stopper 263 from being separated from the second rotating shaft 21.
Further, referring to fig. 10 to 12, as a specific embodiment of the overload protection device provided by the present invention, the driving unit includes a second rotating shaft 21 extending with the rotating shaft axis as a central axis, a power arm 354 is sleeved on the second rotating shaft 21, and a transmission portion 352 is disposed on the power arm 354.
In this embodiment, the power arm 354 is sleeved on the second rotating shaft 21, and when the second rotating shaft 21 rotates around the axis, the power arm 354 also rotates around the axis, and the transmission part 352 is disposed on the power arm 354, so that the transmission part 352 also rotates around the axis.
Further, referring to fig. 10 to 12, as an embodiment of the overload protection apparatus provided by the present invention, a fastening assembly (not shown) for preventing the power arm 354 from moving along the axial direction of the second rotating shaft 21 is disposed on the second rotating shaft 21. Thus, by adopting the fastening assembly, the power arm 354 does not shake in the axial direction of the second rotating shaft 21, and the stability of the power arm 354 in the power output process is ensured. In one embodiment, the fastening assembly is an annular clamp spring (not shown) disposed on the second shaft 21, and the annular clamp spring abuts against the power arm 354. The number of the annular snap springs can be one or two, and when the number of the annular snap springs is two, the power arm 354 is optionally clamped between the two annular snap springs. In this way, power arm 354 can be stably constrained between the two annular snap springs.
Referring to fig. 1 to 19, the present invention further provides a parking space lock, which includes a baffle (not shown) and an overload protection device, wherein the baffle is fixed on the first rotating shaft 42. In this manner, the flapper can be set up and laid flat by rotation of the first shaft 42.
Due to the overload protection device, the first rotating shaft 42 and the second rotating shaft 21 form transmission connection through a transmission mechanism, and the transmission connection can be that the first rotating shaft 42 drives the second rotating shaft 21 to rotate through the transmission mechanism or that the second rotating shaft 21 drives the first rotating shaft 42 to rotate through the transmission mechanism. The protection mechanism is located between the transmission mechanism and the second shaft 21, and is in overload (here, "overload" means a condition that the first shaft 42 is overloaded when the second shaft 21 is not rotating the first shaft 42, and the second shaft 21 is not rotating the second shaft 21, or a condition that the first shaft 42 is overloaded when the first shaft 42 is rotating the second shaft 21, and the first shaft 42 is not rotating the second shaft 21, more specifically, the protection mechanism disconnects the transmission connection between the transmission mechanism and the second shaft 21, so that the first shaft 42, the second shaft 21, or the transmission mechanism is prevented from being damaged in overload when the first shaft 42, the second shaft 21, or the transmission mechanism is damaged when the first shaft 21 is rotating the second shaft 21, provided that the transmission mechanism is a gear set, and the first shaft 42 is rotating the second shaft 21, and the second shaft 21 is not rotating the first shaft 42 is rotating the second shaft 21.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. Overload protection device, including the base, its characterized in that: further comprises:
the first rotating shaft is arranged on the base;
the second rotating shaft is arranged on the base;
the transmission mechanism is arranged between the first rotating shaft and the second rotating shaft and is used for enabling the first rotating shaft and the second rotating shaft to form transmission connection;
the protection mechanism is arranged between the transmission mechanism and the second rotating shaft and used for disconnecting transmission connection between the transmission mechanism and the second rotating shaft when overload occurs; and
the driving mechanism is used for driving the second rotating shaft to rotate;
the transmission mechanism comprises a first gear arranged on the first rotating shaft and a second gear sleeved on the second rotating shaft and connected with the first gear in a transmission way, and a containing cavity is formed in the surface of the second rotating shaft; the protection mechanism comprises a ball arranged in the accommodating cavity of the second rotating shaft and an elastic piece connected between the ball and the bottom surface of the accommodating cavity, and the ball at least partially extends out of the accommodating cavity and is propped against the inner wall of the second gear; a concave part for the balls to slide in and slide out is concavely formed on the inner wall of the second gear;
The second gear is provided with a stop component for preventing the balls from sliding out of the concave part along the axial direction of the second rotating shaft, the stop component comprises a stop ring and an annular flange which is formed by protruding the inner side wall of the second gear towards the second rotating shaft and is annularly arranged on the outer side of the second rotating shaft, the stop ring is rotatably sleeved on the second rotating shaft, the concave part is positioned between the annular flange and the stop ring, the stop ring is abutted against the second gear, and the second rotating shaft is provided with a limiting mechanism for preventing the annular flange and the stop ring from moving along the axial direction of the second rotating shaft;
the limiting mechanism comprises two clamping grooves extending along the circumferential direction of the second rotating shaft and two clamping springs respectively and correspondingly clamped in the two clamping grooves, the annular flange and the stop ring are respectively positioned between the two clamping springs, one clamping spring is abutted on the annular flange, and the other clamping spring is abutted on the stop ring.
2. The overload protection device of claim 1, wherein: the number of the concave parts is multiple, the concave parts are uniformly distributed along the circumferential direction of the inner side wall of the second gear, a convex part is formed between every two adjacent concave parts, the surface of each convex part is an arc surface, and the arc surfaces are tangent to the inner side surfaces of every two adjacent concave parts.
3. The overload protection device of claim 1, wherein: the accommodating cavity extends along the radial direction of the second rotating shaft, the elastic piece is a spring which stretches along the radial direction of the second rotating shaft, the spring is positioned in the accommodating cavity, and two ends of the spring are respectively abutted to the ball and the inner wall of the accommodating cavity.
4. An overload protection apparatus according to any one of claims 1 to 3 wherein: the first rotating shaft is provided with a reset component which is used for recovering to the initial relative position when the first rotating shaft and the first gear rotate relatively.
5. The overload protection device of claim 4, wherein: the reset assembly includes:
the rotary drum is sleeved on the first rotating shaft and can rotate relative to the first rotating shaft, a torsion spring is sleeved on the rotary drum, the torsion spring is provided with a first connecting end and a second connecting end, and a first protruding part and a second protruding part are arranged on the first rotating shaft; when the first rotating shaft rotates relative to the rotating drum towards a first direction, the first protruding part is abutted on the first connecting end and drives the first connecting end to rotate along the circumferential direction of the rotating drum so as to increase the torque of the torsion spring; when the first rotating shaft rotates relative to the rotating drum in a second direction opposite to the first direction, the second protruding part is abutted on the second connecting end and drives the second connecting end to rotate along the circumferential direction of the rotating drum so as to increase the torque of the torsion spring; and
A braking mechanism for locking the drum to prevent relative rotation between the drum and the base.
6. The overload protection device of claim 5, wherein: the first gear is arranged at one end of the rotary drum, and a rotating wheel is arranged at the other end of the rotary drum; the rotating wheel and the first gear are respectively sleeved on the first rotating shaft, a first slotted hole extending along the circumferential direction of the rotating drum is formed in the rotating wheel, a second slotted hole extending along the circumferential direction of the rotating drum is formed in the first gear, the first connecting end penetrates through the first slotted hole, and the second connecting end penetrates through the second slotted hole.
7. The overload protection device of claim 6, wherein: the braking mechanism includes:
the bolt is arranged on the base in a sliding manner, one end of the bolt is provided with a buckling part, and the edge of the rotating wheel is provided with at least one notch for the buckling part to be inserted and pulled out; and
and the driver is used for driving the bolt to move relative to the rotating wheel and limiting the rotating wheel to rotate when the clamping part is inserted into the notch.
8. The overload protection device of claim 7, wherein: the bolt extends in the radial direction of the rotating wheel, the bolt can slide on the base along the extending direction, the base is provided with a supporting part, and the supporting part is provided with a pore canal which extends along the radial direction of the rotating wheel and is used for the bolt to pass through.
9. Parking stall lock, its characterized in that: comprising a baffle and an overload protection apparatus according to any one of claims 1 to 8, the baffle being fixed to the first shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193503.3A CN108277757B (en) | 2018-03-09 | 2018-03-09 | Overload protection device and parking spot lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193503.3A CN108277757B (en) | 2018-03-09 | 2018-03-09 | Overload protection device and parking spot lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108277757A CN108277757A (en) | 2018-07-13 |
| CN108277757B true CN108277757B (en) | 2024-03-22 |
Family
ID=62809381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810193503.3A Active CN108277757B (en) | 2018-03-09 | 2018-03-09 | Overload protection device and parking spot lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108277757B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618298A (en) * | 2019-09-20 | 2019-12-27 | 深圳市矽电半导体设备有限公司 | Abutting fixing structure, probe station and method for pressing needle clamp fixing plate |
| CN110602288B (en) * | 2019-09-27 | 2021-03-02 | 维沃移动通信有限公司 | Electronic device |
| CN110814831B (en) * | 2019-11-25 | 2020-12-29 | 上海工程技术大学 | Torque protection device |
| CN115864729B (en) * | 2022-12-09 | 2023-08-18 | 东莞市赛仑特实业有限公司 | Overload-prevention planetary gear motor |
| CN116621400B (en) * | 2023-07-25 | 2023-10-10 | 中国市政工程西南设计研究总院有限公司 | High-quality water purification treatment system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201714863U (en) * | 2010-06-18 | 2011-01-19 | 浙江亚特电器有限公司 | Clutch structure and grass raking machine applying same |
| CN102877678A (en) * | 2012-09-28 | 2013-01-16 | 帕洛克（厦门）电子科技有限公司 | Remote-control parking lot barrier |
| CN202972388U (en) * | 2012-11-16 | 2013-06-05 | 天津市亚安科技股份有限公司 | Horizontal holder with overload protection |
| TW201333318A (en) * | 2012-02-07 | 2013-08-16 | Taiwan Fu Hsing Ind Co Ltd | Transmission mechanism and electro-mechanical lock therewith |
| CN208379493U (en) * | 2018-03-09 | 2019-01-15 | 深圳市无名智能科技有限公司 | Overload protection arrangement and berth lock |
-
2018
- 2018-03-09 CN CN201810193503.3A patent/CN108277757B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201714863U (en) * | 2010-06-18 | 2011-01-19 | 浙江亚特电器有限公司 | Clutch structure and grass raking machine applying same |
| TW201333318A (en) * | 2012-02-07 | 2013-08-16 | Taiwan Fu Hsing Ind Co Ltd | Transmission mechanism and electro-mechanical lock therewith |
| CN102877678A (en) * | 2012-09-28 | 2013-01-16 | 帕洛克（厦门）电子科技有限公司 | Remote-control parking lot barrier |
| CN202972388U (en) * | 2012-11-16 | 2013-06-05 | 天津市亚安科技股份有限公司 | Horizontal holder with overload protection |
| CN208379493U (en) * | 2018-03-09 | 2019-01-15 | 深圳市无名智能科技有限公司 | Overload protection arrangement and berth lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108277757A (en) | 2018-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108277757B (en) | Overload protection device and parking spot lock | |
| US9435143B2 (en) | Cylindrical lock with automatic electronic locking function | |
| US7686150B2 (en) | Governor device for door | |
| US6862845B2 (en) | Drop-catch mechanism for an overhead door | |
| US20060285254A1 (en) | Vehicle mirror system with reduced friction actuation and movement | |
| CN112145542B (en) | Folding module and folding electronic equipment | |
| US11187008B2 (en) | Clutch engagement assembly of door lock and driving device thereof | |
| CN212338741U (en) | Camera equipment assembly and quick connecting assembly thereof | |
| US8956101B2 (en) | Spare wheel storage assembly for a vehicle | |
| JPS6313048B2 (en) | ||
| SE0900898A1 (en) | Hinge device | |
| CN208379493U (en) | Overload protection arrangement and berth lock | |
| CN208379492U (en) | Resetting apparatus, caging system and berth lock | |
| JP2019515832A (en) | Locking device for pedaled vehicles | |
| KR101485039B1 (en) | Webbing take-up device | |
| CN109083998B (en) | Switching device of quick release mechanism and linear actuator | |
| WO2003040579A1 (en) | Power transmission mechanism | |
| CN217588723U (en) | Travel switch, trailer coupler and vehicle | |
| EP4236305A1 (en) | Fixing system for mounting a camera to a support structure | |
| EP2752576B1 (en) | Recoil starter | |
| EP4261845A1 (en) | Control rod driving mechanism with safety protection function | |
| CN111376726A (en) | Emergency disconnect device for battery charging inlet of electric vehicle | |
| CN212837223U (en) | Axial locking mechanism and lockset | |
| CN109386220B (en) | Housing unit for a drive unit of a locking or protective device | |
| CN110316079B (en) | Actuating mechanism for adjusting display terminal and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |