JP2016067185A - Charging stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging stand capable of reducing a force for pressing a charging cable.SOLUTION: A charging cable 3 is pressed against a static pulley unit 7 by means of a contact member 14A that can be displaced to contact with and separate from a part of the charging cable 3 in contact with the static pulley unit 7. Consequently, (a) a frictional force generated at the contact part of the static pulley unit 7 and charging cable 3, and (b) a frictional force generated when the contact member 14A pushes the charging cable 3 toward the static pulley unit 7 act as a resistance force against the pulling force. Consequently, the pushing force can be reduced compared with a case where the charging cable is held only with the frictional force generating at the contact part of the charging cable 3 and contact member 14A.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a charging stand for storing a charging cable.

  For example, in the invention described in Patent Document 1, a resistance force that resists the pulling force of the pulling mechanism is generated by sandwiching the charging cable between a pair of abutting members provided at the entrance of the housing.

JP 2014-5148 A

  By the way, in the method of holding the charging cable by sandwiching the charging cable between the pair of abutting members, it is necessary to increase the force for pressing the abutting member against the charging cable (hereinafter referred to as pressing force).

  For this reason, in the retracting mechanism described in Patent Literature 1, for example, the frictional force generated at the contact portion between the charging cable and the pair of contact members is increased by increasing the elastic coefficient of the spring that exerts the pressing force. There is a need to.

  In view of the above points, in the present application, in the charging stand that accommodates the charging cable (3) for the electric vehicle, the casing (5) that accommodates the charging cable (3), and the charging cable (3) enters and exits. A housing (5) having an entrance / exit (5A) and a retracting mechanism (11) for drawing the charging cable (3) into the housing (5), the static pulley on which the charging cable (3) is bridged (7A) and a moving pulley (9A), and at least a pulling mechanism (11) that exerts a pulling force by using gravity acting on the moving pulley (9A), and a static pulley ( 7A) is a contact member (14A) that is displaceable and displaceable with respect to the part in contact with 7A), and presses the charging cable (3) against the static pulley (7A) in contact with the charging cable (3) A contact member (14A)

  Accordingly, in the present application, (a) frictional force generated at the contact portion between the static pulley (7A) and the charging cable (3), and (b) the contact member (14A) pulls the charging cable (3) into the static pulley ( The frictional force generated by pressing toward 7A) acts on the charging cable (3) as a resistance force that resists the pulling force.

  That is, since the charging cable (3) is stretched over the static pulley (7A) and the movable pulley (9A), the static pulley (7A) rotates as compared with the case where the charging cable (3) is not bridged. It is hard to do. That is, the frictional force between the static pulley (7A) and the charging cable (3) becomes a resistance force.

  Therefore, the present application is based on the contact member (14A) as compared with the invention that holds the charge cable only by the frictional force generated at the contact portion between the charge cable and the pair of contact members, that is, the invention described in Patent Document 1. The pressing force can be reduced.

  Incidentally, the reference numerals in parentheses for each of the above means are examples showing the correspondence with the specific means described in the embodiments described later, and the present invention is indicated by the reference numerals in the parentheses of the above respective means. It is not limited to specific means.

It is a general view which shows the structure of the charging stand which concerns on 1st Embodiment of this invention. FIG. 2 is a right side view of FIG. 1. A and B are operation explanatory views of the cable holding mechanism 14 according to the first embodiment of the present invention. It is explanatory drawing of the cable holding mechanism 14 which concerns on 2nd Embodiment of this invention.

  The “embodiment of the invention” described below shows an example of the embodiment. In other words, the invention specific items described in the claims are not limited to the specific means and structures shown in the following embodiments.

  In the present embodiment, the present invention is applied to a charging stand that accommodates a charging cable for a plug-in hybrid vehicle (hereinafter referred to as an electric vehicle). The arrows and the like indicating the directions given to the drawings are described for easy understanding of the relationship between the drawings. The present invention is not limited to the directions given in the drawings.

  At least one member or part described with at least a reference numeral is provided, except where “plurality”, “two or more”, and the like are omitted. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1. Outline of Charging Stand The charging stand 1 according to the present embodiment includes a housing 5 and a retracting mechanism 11 as shown in FIG. The charging cable 3 is a flexible cable body, and is a cable for electrically connecting a charging power source (not shown) and the electric vehicle.

  On one end side of the charging cable 3 in the longitudinal direction, a plug portion 3A for connecting the charging cable 3 to the electric vehicle is provided. The plug portion 3A is a connection portion that can be detachably attached to the electric vehicle. The other end in the longitudinal direction of the charging cable 3 is connected on the power source side.

  The housing 5 is a storage container that stores the charging cable 3. The housing 5 according to the present embodiment is formed by forming a metal plate such as SPCC into a cylindrical shape (in this embodiment, a rectangular tube shape), and is installed so that the longitudinal direction thereof coincides with the vertical direction. .

  The housing 5 is provided with an entrance 5A through which the charging cable 3 enters and exits. The entrance / exit 5A is provided on the upper side in the vertical direction of the housing 5 and opens in the horizontal direction. A plug placement portion 5B is provided on the upper side of the casing 5 in the vertical direction from the entrance / exit 5A.

  The plug placement portion 5B is a cylindrical portion into which the front side of the plug portion 3A is inserted. A pull-in mechanism 11 that pulls the charging cable 3 into the housing 5 is provided on the lower side in the vertical direction from the plug placement portion 5 </ b> B in the housing 5.

2. The structure of the drawing-in mechanism The drawing-in mechanism 11 includes a static pulley unit 7 and a moving pulley unit 9. As shown in FIG. 2, the static pulley unit 7 and the movable pulley unit 9 have disk-like pulleys 7 </ b> A and 9 </ b> A that are disposed in the housing 5 and on which the charging cable 3 is hung.

  That is, the static pulley unit 7 has at least one (four in this embodiment) pulley 7A. The pulley 7 </ b> A is supported so as to be rotatable with respect to a shaft portion 7 </ b> B fixed to the housing 5. For this reason, the plurality of pulleys 7 </ b> A rotate according to the movement of the charging cable 3 without moving with respect to the housing 5 in a state of being arranged on the coaxial line.

  The movable pulley unit 9 has at least one (four in this embodiment) pulley 9A. The pulley 9 </ b> A can rotate while moving away from or approaching the static pulley unit 7. The charging cable 3 is stretched between the static pulley unit 7 and the dynamic pulley unit 9 in a state where the dynamic pulley unit 9 is disposed below the static pulley unit 7.

  That is, as shown in FIG. 1, the charging cable 3 extends downward from a fixed end fixed to the static pulley portion 7, and the extending direction is turned upward by the movable pulley portion 9. It reaches the static pulley section 7 again. For this reason, when the charging cable 3 is pulled out of the housing 5, the movable pulley portion 9 is displaced upward in proportion to the length of the charging cable 3.

  A force for displacing the moving pulley portion 9 downward is always acting on the moving pulley portion 9 due to the gravity acting on the moving pulley portion 9. When the movable pulley portion 9 is displaced downward, the charging cable 3 is drawn into the housing 5 in proportion to the downward displacement amount.

  That is, the movable pulley unit 9 according to the present embodiment functions as a movable unit that operates along with the movement of the charging cable 3. Then, the gravity acting on the moving pulley unit 9 generates a pulling force that pulls the charging cable 3 into the housing 5.

  The guide member 12 guides the displacement of the movable pulley unit 9. In the present embodiment, one guide member 12 is provided on each side in the horizontal direction across the movable pulley unit 9. Note that the pair of guide members 12 according to the present embodiment are provided on both sides of the movable pulley unit 9 in the horizontal direction orthogonal to the rotation axis of the pulley 9A.

  The pair of guide members 12 are rod-shaped members extending in the vertical direction. The movable pulley portion 9 is provided with a guided portion 9C having a guide hole 9B. Each guide hole 9B is a through hole through which each guide member 12 passes.

  The inner peripheral surface of each guide hole 9 </ b> B makes sliding contact (also referred to as sliding contact) with each guide member 12, so that the displacement of the movable pulley unit 9 is guided by the pair of guide members 12. An umbrella-shaped stopper portion 12 </ b> A is provided at the upper end of each guide member 12.

  A coil spring 13 is disposed between each stopper portion 12A and each guided portion 9C. For this reason, when the moving pulley 9 is displaced, the coil spring 13 is also displaced together with the moving pulley 9. The natural length of the coil spring 13 is such that when the distance between the moving pulley unit 9 and the static pulley unit 7 becomes a preset distance (hereinafter referred to as a set distance), the upper end of the coil spring 13 is connected to the stopper unit 12A. It is set to touch.

  And if the distance of the moving pulley part 9 and the static pulley part 7 becomes smaller than a setting distance, the coil spring 13 will compress-deform. For this reason, in the state in which the moving pulley unit 9 is closest to the static pulley unit 7, that is, in the state in which the charging cable 3 is pulled out most, the coil spring 13 applies a force that displaces the moving pulley unit 9 downward. 9 is applied.

  A stopper 18 is provided on the lower end side of the guide member 12 to restrict the displacement of the lower side of the movable pulley 9. When the moving pulley unit 9 is displaced downward and the moving pulley unit 9 and the stopper 18 collide with each other, the moving pulley unit 9 is restricted from being further displaced downward.

3. Speed Suppression Mechanism The speed suppression mechanism 17 is a mechanism for suppressing the operating speed of the movable part such as the movable pulley part 9 from exceeding a preset operating speed, and at least the retraction mechanism 11 is used to charge the charging cable 3. Activates when is wound up.

  Specifically, the speed suppression mechanism 17 includes a cylindrical cylinder 17A, a rod 17B protruding and retracting from the cylinder 17A, a connecting member 17C that connects the rod 17B and the moving pulley unit 9, and the like. Mechanism.

  A viscous fluid such as oil is sealed in the cylinder 17A. A piston (not shown) that slidably contacts the inner wall of the cylinder 17A is provided at the end of the rod 17B on the cylinder 17A side, dividing the space in the cylinder 17A into two spaces.

  The piston is provided with at least two communication passages (not shown) that allow the two spaces to communicate with each other. A one-way valve (not shown) that allows a viscous fluid to flow only in one direction is disposed in a communication path having a small pressure loss (flow resistance) among the communication paths.

  The one-way valve opens the communication path when the rod 17B exits the cylinder 17A to allow the viscous fluid to flow, and closes the communication path when the rod 17B enters the cylinder 17A to allow the viscous fluid to flow. Ban.

  For this reason, the pressure loss generated when the rod 17B exits the cylinder 17A is reduced, and the pressure loss generated when the rod 17B enters the cylinder 17A is increased. That is, the speed suppression mechanism 17 functions as a damper that suppresses an increase in the displacement speed of the movable pulley unit 9 when the charging cable 3 is wound up.

4). Cable Holding Mechanism The cable holding mechanism 14 is a mechanism that exhibits at least a function of preventing the charging cable 3 from being pulled into the housing 5. Specifically, as shown in FIGS. 3A and 3B, the cable holding mechanism 14 includes a contact member 14A, an attachment / detachment interlocking mechanism 15 and the like.

  The contact member 14 </ b> A is a member that can be displaced from the charging cable 3, and is a member that contacts a portion of the charging cable 3 that is in contact with the static pulley portion 7 (see FIG. 3B). 14 A of said contact members press the said charging cable 3 against the static pulley part 7 in the state which contacted the charging cable 3 (refer FIG. 3B).

  The contact member 14A according to the present embodiment is configured by a rotating body (roller) that can rotate only in the direction in which the charging cable 3 is pulled out. That is, the roller that forms the contact member 14A is rotatably supported via a one-way clutch (not shown) that permits rotation in only one direction.

  For this reason, in a state where the contact member 14A is in contact with the charging cable 3, the charging cable 3 is prevented from being pulled into the housing 5, and the charging cable 3 is allowed to be pulled out from the housing 5. Is done.

  As shown in FIG. 2, the contact member 14 </ b> A according to the present embodiment is radially outward of a static pulley (hereinafter referred to as a guide pulley 7 </ b> A <b> 1) that guides the charging cable 3 to the entrance / exit 5 </ b> A among the plurality of static pulleys 7 </ b> A. To position.

  That is, the contact member 14A presses a portion of the charging cable 3 that contacts the guide pulley 7A1 toward the guide pulley 7A1. The guide pulley 7A1 is a pulley located at one end in the axial direction among the plurality of pulleys 7A arranged on the coaxial line, and is a pulley facing the entrance / exit 5A in the moving direction of the charging cable 3.

  The attachment / detachment interlocking mechanism 15 is a mechanism that displaces and contacts the contact member 14A according to whether or not the plug portion 3A is placed on the plug placement portion 5B. As shown in FIG. 3A, the attachment / detachment interlocking mechanism 15 includes an arm member 15A, a spring 15B, an interlocking member 15C, and the like.

  The arm material 15 </ b> A is an arm-like member that is swingably assembled to the housing 5. The contact member 14A is assembled to the distal end side of the arm member 15A. The spring 15B is an elastic member that applies an elastic force to the arm member 15A. The contact member 14A is pressed against the charging cable 3 by the elastic force of the spring 15B.

  The interlocking member 15C is mechanically interlocked with the attachment / detachment of the plug portion 3A to the plug mounting portion 5B, thereby transmitting the displacement to the arm member 15A. 15 C of interlocking members which concern on this embodiment are comprised by the push pull wire which can transmit pushing force and pulling force.

  Accordingly, when the plug portion 3A is placed on the plug placement portion 5B, the contact member 14A is separated from the charging cable 3 as shown in FIG. 3A. When the plug portion 3A is not placed on the plug placement portion 5B, the contact member 14A is pressed against the charging cable 3 as shown in FIG. 3B.

5. Features of Charging Station According to this Embodiment In this embodiment, (a) frictional force generated at the contact portion between the pulley 7A of the static pulley unit 7 and the charging cable 3, and (b) the contact member 14A is the charging cable 3 Is applied to the charging cable 3 as a resistance force that resists the pull-in force.

  That is, since the charging cable 3 is bridged over the pulley 7A and the pulley 9A of the moving pulley unit 9, the pulley 7A is less likely to rotate than when the charging cable 3 is not bridged. That is, the frictional force between the pulley 7A and the charging cable 3 becomes a resistance force.

  Therefore, in this embodiment, the pressing force by the contact member 14A can be reduced as compared with the case where the charge cable 3 is held only by the frictional force generated at the contact portion between the charging cable 3 and the contact member 14A. It becomes.

  In the present embodiment, when the plug portion 3A is placed on the plug placement portion 5B, the contact member 14A is separated from the charging cable 3, and the plug portion 3A is not placed from the plug placement portion 5B. In this case, the attachment / detachment interlocking mechanism 15 that presses the contact member 14A against the charging cable 3 is provided.

As a result, the contact member 14A can be displaced and moved in conjunction with the attaching / detaching operation of the plug portion 3A, so that the workability of storing the charging cable 3 can be improved.
(Second Embodiment)
In the above-described embodiment, the interlocking member 15C is configured by a push-pull wire. However, in the present embodiment, the interlocking member 15C is configured by a link (rigid body) similar to the arm member 15A, as shown in FIG. It is a thing.

In the present embodiment, the interlocking member 15C and the arm member 15A are integrally formed by one member, but the present embodiment is not limited to this.
That is, (a) a structure in which the interlocking member 15C and the arm member 15A are manufactured as separate members and then the interlocking member 15C and the arm member 15A are connected and integrated, or (b) the interlocking member 15C and the arm member 15A Alternatively, the interlocking member 15C and the arm member 15A may be rotatably connected.

(Other embodiments)
The attachment / detachment interlocking mechanism 15 according to the present invention is not limited to the configuration shown in the above-described embodiment. That is, for example, it may be detected whether or not the plug portion 3A is placed on the plug placement portion 5B, and the contact member 14A may be moved away from and in contact with an electric actuator such as an electric motor or a solenoid.

In the above-described embodiment, the speed suppression mechanism 17 is provided, but the present invention is not limited to this, and the speed suppression mechanism 17 may be eliminated.
Although the retracting mechanism 11 according to the above-described embodiment has the configuration including the static pulley portion 7 and the movable pulley portion 9, the present invention is not limited to this, and the charging cable 3 is wound by, for example, an electric motor. It may be configured to take.

  Further, the present invention is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims.

DESCRIPTION OF SYMBOLS 1 ... Charging stand 3 ... Charging cable 3A ... Plug part 5 ... Case 5A ... Entrance / exit 5B ... Plug mounting part 7 ... Static pulley part 9 ... Dynamic pulley part 9A ... Pulley 9B ... Guide hole 9C ... Guided part 11 ... Retraction Mechanism 12 ... Guide member 12A ... Stopper part 14 ... Cable holding mechanism 14A ... Abutting member 15 ... Detachable interlocking mechanism 15A ... Arm material 15C ... Interlocking member 17 ... Speed control mechanism

Claims (5)

In a charging stand that houses a charging cable for an electric vehicle,
A housing in which the charging cable is housed, and a housing having an entrance through which the charging cable enters and exits;
A pull-in mechanism for pulling the charging cable into the housing, the pull-in mechanism having a static pulley and a moving pulley over which the charging cable is bridged and at least using a gravity acting on the moving pulley to exhibit a pulling force Mechanism,
An abutting member that is displaceable and displaceable with respect to a portion of the charging cable that is in contact with the static pulley, wherein the abutting member presses the charging cable against the static pulley while being in contact with the charging cable; A charging stand comprising:   The charging stand according to claim 1, wherein the contact member is a rotating body that can rotate only in a direction in which the charging cable is pulled out. When the plurality of static pulleys are arranged on the same line, and the static pulley that guides the charging cable to the doorway among the plurality of static pulleys is a guide pulley,
The charging stand according to claim 1, wherein the contact member presses the charging cable against the guide pulley. The charging cable has a plug portion for connecting the charging cable to the electric vehicle on one end side in the longitudinal direction,
A plug mounting portion provided in the housing for mounting the plug portion;
When the plug portion is placed on the plug placement portion, the contact member is separated from the charging cable, and when the plug portion is not placed on the plug placement portion, the contact portion The charging stand according to any one of claims 1 to 3, further comprising an attachment / detachment interlocking mechanism that presses a member against the charging cable. The attachment / detachment interlocking mechanism is:
An arm-shaped arm member that is swingably assembled to the housing, the arm member having the contact member assembled to the distal end side;
A spring that applies an elastic force to the arm member, and a spring that generates a force that presses the contact member against the charging cable; and mechanically interlocked with the attachment and detachment of the plug portion to the plug placement portion. The charging station according to claim 4, further comprising an interlocking member that displaces and transmits the displacement to the arm member.

Images