JP6653518B2 - Operating state release mechanism - Google Patents

Description

  The present invention relates to an operating state release mechanism.

  In Patent Literature 1, one end of a cable is connected to a change lever provided in an engine room for switching a shift range, and the other end of the cable is rotated and pulled to operate a parking range or the like. An operating state release mechanism for releasing an active shift range is disclosed.

  This operating state release mechanism is mounted on a vehicle to which a shift-by-wire system is applied as a system for switching and controlling a shift range of a transmission of the vehicle. In a shift-by-wire system, when a driver operates a shift lever in a vehicle cabin, an electric signal corresponding to the operation is generated, and an actuator switches a transmission shift range based on the generated electric signal. In the shift-by-wire system, when an electrical failure occurs, the parking range cannot be released even by operating the shift lever in the passenger compartment. Unless the parking range is released, the vehicle cannot be moved. The above-mentioned operation state release mechanism is a mechanism for manually releasing the parking range in such a case.

  The operating state releasing mechanism releases the operating state by manually pulling the cable by rotating the operation unit.

JP 2010-025222A

  If the pulling operation of the cable is continued even after the operating state is released, the connection between the transmission and the operating state releasing mechanism or the operating state releasing mechanism itself may be damaged. In order to avoid this, it is conceivable to provide an overload absorbing mechanism.

  Here, the case where the overload absorbing mechanism is provided in the operation unit (mechanical unit that is manually rotated) of the operating state release mechanism will be considered. The operation unit can have a compact configuration, for example, adopting a structure in which a general tool is inserted and rotated. However, when the overload absorbing mechanism is provided in the operation unit, the operation unit cannot be configured to be compact. Further, by providing the tool with the overload absorbing mechanism, it is possible to obtain the same operation as when the overload absorbing mechanism is provided in the operation section of the operating state releasing mechanism. However, in this case, it is necessary to prepare a special tool in the vehicle, and since the tool is large, the space for turning the tool is also large, and the extra space for turning the tool is provided in the space for mounting the operation unit. There is a problem that a space needs to be provided.

  Also consider the case where an overload absorbing mechanism is provided in a cable connecting the operating part of the operating state releasing mechanism and the operating mechanism of the transmission. In this case, if a heavy overload absorbing mechanism is provided in the cable that is placed through the empty space, the overload absorbing mechanism swings with the movement of the vehicle, and may hit other mechanisms. Occurs.

  In the above-described problem, the operating state releasing mechanism for releasing the operating state of the transmission has been described. However, the same configuration may be applied to another mechanism such as a parking brake.

  An object of the present invention is to provide an operating state releasing mechanism that can avoid an excessive cable pulling operation without causing the above-described problem caused by the overload absorbing mechanism.

  An operation state release mechanism according to one aspect of the present invention includes an operation mechanism that transitions between an operation state and a release state, a change lever that changes the state of the operation mechanism to the release state, and one end directly or directly to the change lever. A cable operating mechanism having an indirectly engaging cable and an operating portion extending in a direction in which the other end of the cable extends, and rotating the operating portion to pull the other end of the cable And an overload absorbing mechanism for absorbing a load applied to the change lever via the cable by rotation of the operation unit, wherein the change lever includes the overload absorption mechanism. Is adopted.

  According to the present invention, since the change lever is provided with the overload absorbing mechanism for absorbing the load applied to the change lever, it is possible to avoid an excessive cable pulling operation.

FIG. 3 is a diagram showing an operating state release mechanism according to Embodiment 1 of the present invention. FIG. 2 is a partial cross-sectional view showing a connection state between the change lever and the cable of FIG. Partial sectional view of the connecting portion of the change lever and the action rod in FIG. (A) A view showing a state of a change lever in which an operation mechanism is in an operating state, and (b) a view showing a state of a change lever in which an operation mechanism is in a release state. Diagram showing how overload absorption mechanism absorbs overload (A) The figure which shows the structure of the change lever which concerns on Embodiment 2 of this invention, (b) The figure which shows the mode of the change lever in which the operating mechanism is in the release state. Diagram showing how overload absorption mechanism absorbs overload (A) The figure which shows the structure of the change lever which concerns on Embodiment 3 of this invention, (b) The figure which shows the mode of the change lever in which the operating mechanism is in the release state. Diagram showing how overload absorption mechanism absorbs overload (A) The figure which shows the structure of the change lever which concerns on Embodiment 4 of this invention, (b) The figure which shows the mode of the change lever in which the operation mechanism is in the release state. Diagram showing how overload absorption mechanism absorbs overload

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, in the embodiments, the same components are denoted by the same reference numerals, and redundant description will be omitted.

(Embodiment 1)
FIG. 1 is a diagram showing an operating state releasing mechanism 1 according to Embodiment 1 of the present invention. FIG. 2 is a partial sectional view showing a connection state between the change lever and the cable of FIG. 1 via an overload absorbing mechanism. FIG. 3 is a partial cross-sectional view of a connection portion between the change lever and the action rod. Hereinafter, the operating state releasing mechanism 1 will be described with reference to FIGS. In the following, the operation rod 5 of the transmission of the vehicle will be described as an operating mechanism, and, for example, the parking range will be operated and the neutral range will be released.

  The operating state releasing mechanism 1 includes a fixing portion 3, an operating rod 5, a changing lever 11, a cable 12, an operating mechanism 13-1, an operating mechanism 13-2, brackets 14, 15, and an operating rod 16.

  The operating mechanism is provided with a fixed part 3. The fixed part 3 is provided with an operation rod 5. The operation rod 5 is a part of an operation mechanism, and can take a first state that is an operation state and a second state that is a release state. In the embodiment of FIG. 1, the first state and the second state of the operation rod 5 are, for example, rotated by about 45 ° and have different angles with respect to a predetermined position. State and the other can be in a released state. Depending on the operation of the operation mechanism, the transition from the first state to the second state may be not only a change in the state but also a movement of the position.

  The change lever 11 is a lever for changing the operation rod 5 from the first state to the second state and changing the operation mechanism from the operation state to the release state. The change lever 11 has a first change lever element 21 having one end connected to the operation rod 5, and a second change lever connected pivotally about a fulcrum 23 provided at the other end of the first change lever element 21. Element 22. The change lever 11 includes a spring 24 that urges the second change lever 22 element to be in a bent state. As shown in FIG. 3, the second change lever element 22 is bent so as to have a concave shape in the longitudinal direction to form a concave portion 22a. The concave portion 22a is a portion where the operating rod 16 is hung, and prevents the lateral displacement when acting on the second change lever element 22. The spring 24 has one end connected to the first change lever element 21 and the other end connected to the second change lever element 22. The urging force of the spring 24 is larger than the force that generates the minimum force (for example, torque) required to transition the operation rod 5 from the first state to the second state. Thus, when the second change lever element 22 is pulled by the action rod 16, the change lever 11 rotates the operation rod 5 to transition from the first state to the second state without the spring contracting. Can be done.

  The cable 12 has an inner cable and an outer casing. The inner cable is slidably received in the outer casing. One end of the inner cable is engaged with the second change lever element 22 of the change lever 11 via the action rod 16, and the other end of the inner cable is connected to the operation side mechanism 13-1.

  The operation side mechanism 13-1 (corresponding to a cable operation mechanism) is a mechanism capable of manually applying a load to the cable 12 and pulling the inner cable. The operation-side mechanism 13-1 has an operation unit 31 that receives a rotation operation. When the operation unit 31 receives the rotation operation, the other end of the inner cable is pulled toward the operation unit, and the operation rod 16 is connected via the inner cable. Operate. The operation side mechanism 13-1 has a structure in which the rotation axis of the operation section 31 extends in the direction extending from the connection portion with the inner cable in the extending direction from the other end of the inner cable, and has a screw structure. , The inner cable can be pulled. In this configuration, the amount of pulling of the inner cable with respect to the rotation operation amount is smaller than that of the pulling operation by the lever or the like, so that a large load can be applied to the inner cable. When rotating the operation unit 31, a standard tool such as a flathead screwdriver may be inserted into the tip of the operation unit 31 to rotate the tool. The operation side mechanism 13-1 is fixed to the bracket 14.

  The operation side mechanism 13-2 is provided at one end of the inner cable, and is a mechanism for applying a force input to the operation unit to the change lever 11 via the inner cable, and has an operation rod 16. In the operation side mechanism 13-2, the operation rod 16 is movably held by the bracket 15.

  The bracket 14 is fixed to a position where the operation-side mechanism 13-1 can be manually operated while holding the operation-side mechanism 13-1.

  The bracket 15 is fixed in the vicinity of the operation mechanism, and is fixed to the fixing portion 3 by, for example, a bolt and a nut that rotatably fix the operation rod 5.

  The operating rod 16 is connected to one end of the inner cable, is slidably provided on a cap provided at an end of the outer casing, and has a hook-shaped tip portion engaged with the second changing lever element 22. As shown in FIG. 3, lateral displacement of the action rod 16 is restricted by the concave portion 22 a of the second change lever element 22. The action rod 16 moves the change lever 11 when the inner cable is pulled. Note that the cable end of the inner cable may be attached to the change lever 11 without the use of the action rod 16 and without a special action side mechanism, and the inner cable and the change lever 11 may be directly connected.

  Next, the operation of the change lever 11 will be described with reference to FIGS. 4A shows a state of the change lever 11 in which the operating mechanism is in the operating state, FIG. 4B shows a state of the changing lever 11 in which the operating mechanism is in the released state, and FIG. The state when the absorption mechanism absorbed the overload is shown.

  When the operation unit 31 receives the rotation operation, the inner cable is pulled, and the change lever 11 changes from the operation state shown in FIG. 4A to the release state shown in FIG. 4B. At this time, the change lever 11 transitions while being bent, and the load applied to the change lever 11 does not exceed the urging force of the spring 24. Further, when the operation portion 31 receives a rotation operation, the inner cable is pulled, the operation mechanism is released, and when the further rotation of the change lever 11 is restricted, the rotation of the operation rod 5 is stopped. Therefore, a further load is applied to the change lever 11, and a load exceeding the urging force of the spring 24 is applied to the change lever 11, so that a transition is made to the overload absorption state shown in FIG. Specifically, in the change lever 11, the second change lever element 22 rotates around the fulcrum 23 against the urging force of the spring 24, and absorbs the overload. Therefore, when the overload is absorbed, the rotating operation of the operation unit corresponding to the load corresponding to the urging force is continued, but the overload absorption mechanism performs the first change when the overload absorption is completed. Since the lever element 21 and the second change lever element 22 are engaged with each other, when the operation of the operation unit is further continued, the force applied to the change lever 11 is rapidly increased. When the spring 24 contracts and absorbs the overload, the fact that the load has increased is transmitted to the operator via the operation unit 31, and the operator stops the further rotation operation.

  As described above, the operating state releasing mechanism 1 according to the first embodiment centers on the first change lever element 21 having one end connected to the operation rod 5 and the fulcrum 23 provided at the other end of the first change lever element 21. The change lever 11 having the second change lever element 22 foldably connected to the second change lever element 22 includes a spring 24 that urges the second change lever element 22 so as to be bent. When the inner cable is further pulled from the released state, the second load lever element 22 rotates about the fulcrum 23 against the urging force of the spring 24, so that the overload can be absorbed.

  Further, when the inner cable is further pulled from the release state of the operation mechanism, a load exceeding the urging force of the spring 24 is required, and the force for rotating the operation unit 31 increases, so that the response to the operator is transmitted to the operator. Can be. Therefore, an excessive pulling operation of the cable can be avoided. Regardless of whether the overload is absorbed at the time of transition from the operation state to the release state or at the time of transition from the release state to the operation state, if the problem can be solved by absorbing the overload, The configuration of the state release mechanism is not particularly limited as long as it can be appropriately configured according to the application and purpose.

(Embodiment 2)
In the second embodiment of the present invention, a case will be described in which the configuration of the change lever is changed in the operating state release mechanism shown in FIG. 1 of the first embodiment.

  FIG. 6A is a diagram illustrating a configuration of the change lever 41 according to Embodiment 2 of the present invention. FIG. 6A shows the state of the change lever 41 in which the operating mechanism is in the operating state. In FIG. 6A, illustration of the operation rod 16 is omitted.

  The change lever 41 is a lever for changing the operation rod 5 from the first state to the second state and changing the operation mechanism from the operation state to the release state. The change lever 41 has one end connected to the operation rod 5, a hook-shaped tip portion of the operation rod 16 engaged with the reception part 42 for receiving a load applied by a pulling operation, and a spring 43 for urging the reception part 42. And

  Next, the operation of the change lever 41 will be described with reference to FIGS. FIG. 6B shows a state of the change lever 41 in which the operating mechanism is in the released state, and FIG. 7 shows a state in which the overload absorbing mechanism absorbs the overload.

  When the operation unit 31 receives a rotation operation, the inner cable is pulled, and the change lever 41 transits from the operation state shown in FIG. 6A to the release state shown in FIG. 6B. At this time, the spring 43 is not contracted, and the load applied to the change lever 41 does not exceed the urging force of the spring 43. Further, when the operation unit 31 receives a rotation operation, the inner cable is pulled, and when a load exceeding the urging force of the spring 43 is applied to the change lever 41, the rotation of the operation rod 5 is stopped, and the change lever 41 is moved to the state shown in FIG. The state transits to the indicated overload absorption state. Regarding the overload absorption state, specifically, the change lever 41 has a receiving portion that receives the receiving portion 42 and a spring 42 that is a biasing member that biases the receiving portion 42, and receives a load by an action rod or the like. The received receiving portion 42 is pressed against the urging force of the spring 43 to absorb the overload. Therefore, as in the first embodiment, the overload absorbing mechanism sharply increases the force applied to the change lever 41 when absorbing the overload. When the spring is contracted, the fact that the load has increased is transmitted to the operator via the operation unit 31, and the operator stops the further rotation operation.

  As described above, according to the second embodiment, one end of the change lever 41 is connected to the operation rod 5 of the operation mechanism, the hook-shaped tip portion of the operation rod 16 is engaged, and the load applied by the pull operation is applied. A receiving portion is provided, and a spring 43 biasing the receiving portion is provided. When the inner cable is further pulled from the released state, the overload can be absorbed by the receiving portion 42 being pressed against the urging force of the spring 43.

(Embodiment 3)
In the third embodiment of the present invention, a case will be described in which the configuration of the change lever is changed in the operating state releasing mechanism shown in FIG. 1 of the first embodiment.

  FIG. 8 is a diagram showing a configuration of the change lever 51 according to Embodiment 3 of the present invention. FIG. 8 shows a state of the change lever 51 in which the operating mechanism is in the operating state. In FIG. 8, illustration of the action rod 16 is omitted.

  The change lever 51 is a lever for changing the operation rod 5 from the first state to the second state and changing the operation mechanism from the operation state to the release state. The change lever 51 has one end connected to the operation rod 5, a hook-shaped tip portion of the operation rod 16 being engaged, and receiving a load applied by a pulling operation, and a projection 53 integrated with the reception part 52. And a sphere 54 engaged with the projection 53 and a spring 55 for urging the sphere 54.

  Next, the operation of the change lever 51 will be described with reference to FIGS. FIG. 8B shows a state of the change lever 51 in which the operating mechanism is in the released state, and FIG. 9 shows a state in which the overload absorbing mechanism absorbs the overload.

  When the operation unit 31 receives the rotation operation, the inner cable is pulled, and the change lever 51 transits from the operation state shown in FIG. 8A to the release state shown in FIG. 8B. At this time, the spring 55 is not contracted, and the load applied to the change lever 51 does not exceed the urging force of the spring 55. Further, when the operation unit 31 receives a rotation operation, the inner cable is pulled, the rotation of the operation rod 5 stops, and when a load exceeding the urging force of the spring 55 is applied to the change lever 51, the change lever 51 The state transits to the indicated overload absorption state. Specifically, the projection 53 provided on the receiving portion 52 pushes the sphere 54 against the urging force of the spring 55, and the receiving portion 52 is pushed down to absorb the overload. For this reason, when the overload absorbing mechanism absorbs the overload, the force applied to the change lever 51 when the engagement between the receiving portion 52 and the sphere 54 is released suddenly decreases, and then rapidly increases. Further, when the projection 53 pushes the sphere 54, a change in the force acting on the operation unit 31 occurs, so that a click feeling is generated, the operation mechanism is shifted to the release state by the operator, and the change lever 51 is overloaded. Can be notified. The operator stops the further rotation operation.

  As described above, according to the third embodiment, the change lever 51 has one end connected to the operation rod 5, the hook-shaped tip portion of the operation rod 16 being engaged, and receiving the load applied by the pulling operation. 52, a projection 53 integrated with the receiving portion 52, a sphere 54 engaged with the projection 53, and a spring 55 biasing the sphere 54. When the inner cable is further pulled from the released state, the protrusion 53 pushes the sphere 54 against the urging force of the spring 55 and the receiving portion 52 is pushed down, so that the overload can be absorbed.

(Embodiment 4)
In the fourth embodiment of the present invention, a case will be described in which the configuration of the change lever is changed in the operating state release mechanism shown in FIG. 1 of the first embodiment.

  FIG. 10 is a diagram illustrating a configuration of a change lever 61 according to Embodiment 4 of the present invention. FIG. 10A shows a state of the change lever 61 in which the operating mechanism is in the operating state.

  The fixing part 3 is fixed to the operating mechanism. The fixed part 3 is provided with an operation rod 5. The operating rod 5 is connected to an operating mechanism, and can assume a first state in which the operating state is established and a second state in which the operating state is released. One end of a spring 7 is connected to the operation rod 5. A sphere 9 is connected to the other end of the spring 7.

  The change lever 61 is a lever for changing the operation rod 5 from the first state to the second state and changing the operation mechanism from the operation state to the release state. The change lever 61 has a connecting portion 62 connected to the operating rod 5 and a lever portion 64 connected to the connecting portion 62 and engaged with the operating rod 16. The connecting portion 62 has a ring shape, and a concave portion 63 that fits a part of the sphere 9 is formed inside the ring.

  Next, the operation of the change lever 61 will be described with reference to FIGS. FIG. 10B shows a state of the change lever in which the operating mechanism is in the released state, and FIG. 11 shows a state in which the overload absorbing mechanism has absorbed the overload.

  When the operation unit 31 receives the rotation operation, the inner cable is pulled, and the change lever 61 transits from the operation state shown in FIG. 10A to the release state shown in FIG. 10B. At this time, the positional relationship between the change lever 61 and the operation rod 5 does not change, and the load applied to the change lever 61 does not exceed the urging force of the spring 7. Further, when the operation unit 31 receives a rotation operation, the inner cable is pulled, and when a load exceeding the urging force of the spring 7 is applied to the change lever 61, the rotation of the operation rod 5 stops, and the change lever 61 is moved to the state shown in FIG. The state transits to the indicated overload absorption state. Specifically, the sphere 9 is pushed down against the urging force of the spring 7, and comes off the concave portion 63 to absorb the overload. For this reason, the overload absorbing mechanism sharply increases the force applied to the change lever 61 and then sharply reduces the force when the overload is absorbed. Further, when the sphere 9 comes off from the concave portion 63, a click feeling is generated, the operating mechanism is shifted to the release state, and it is possible to notify the operator that the change lever 61 is overloaded. The operator stops the further rotation operation.

  As described above, according to the fourth embodiment, one end of the spring 7 is connected to the operation rod 5, the sphere 9 is connected to the other end of the spring 7, and the change lever 61 has a ring-like shape connected to the operation rod 5. The connecting portion 62 has a concave portion 63 formed inside the ring of the connecting portion 62, and a part of the sphere 9 fits into the concave portion 63. When the inner cable is further pulled from the released state, the sphere 9 is pushed down against the urging force of the spring 7 and comes off the concave portion 63, so that the overload can be absorbed.

  Providing the change lever with the overload absorbing mechanism described in the first to third embodiments may include a case where the change lever is connected to the cable and the connection portion is provided with the overload absorbing mechanism. Further, as described in the fourth embodiment, a case where an overload absorbing mechanism is provided between the change lever and the operating mechanism may be included.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a vehicle transmission and the like.

DESCRIPTION OF SYMBOLS 1 Operating state release mechanism 3 Fixed part 5 Operation stick 7, 24, 43, 55 Spring 9, 54 Sphere 11, 41, 51, 61 Change lever 12 Cable 13-1, 13-2 Cable operation mechanism 14, 15 Bracket 16 Function Rod 21 First changing lever element 22 Second changing lever element 22a, 63 Concave part 23 Support point 42, 52 Receiving part 53 Projection 62 Connecting part 64 Lever part

Claims (6)

An operation mechanism of the transmission that transitions between an operation state and a release state;
A change lever that rotates an operation rod of the operation mechanism so as to transition the state of the operation mechanism to the release state,
A cable having one end directly or indirectly engaging the change lever;
A cable operation mechanism that has an operation unit extending in the extending direction of the other end of the cable, and rotates the operation unit to pull the other end of the cable;
An operating state release mechanism comprising:
An overload absorption mechanism that absorbs a load applied to the change lever via the cable by rotation of the operation unit,
The change lever is provided with the overload absorbing mechanism ,
The change lever has a first change lever element and a second change lever element,
One end of the cable engages the second change lever element via a working rod,
The overload absorption mechanism has a spring that absorbs overload,
The spring has one end connected to the first change lever element and the other end connected to the second change lever element .
Operating state release mechanism. The overload absorbing mechanism absorbs the load by deforming when a force applied to the change lever via the cable exceeds a predetermined force.
The operating state releasing mechanism according to claim 1. The predetermined force is greater than a force applied to the change lever via the cable while the change lever moves and the state of the operating mechanism shifts to the release state.
The operating state releasing mechanism according to claim 2. The overload absorption mechanism, when absorbing a load, rapidly increases the force applied to the change lever via the cable,
The operating state releasing mechanism according to claim 1. The overload absorbing mechanism, when absorbing a load, sharply reduces the force applied to the change lever via the cable.
The operating state releasing mechanism according to claim 1. The overload absorbing mechanism operates to generate a click feeling when absorbing a load,
The operating state releasing mechanism according to claim 1.

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