JP3202952U - Plug storage mechanism and trolley with battery - Google Patents

Abstract

A plug storage mechanism and a battery-equipped carriage that can prevent a power cable from being unscrewed. A plug storage mechanism (70) for storing a power plug (52) at the tip of a power cable (50) provided in a battery-mounted carriage, provided on a socket (72) to / from which the power plug (52) is inserted / removed, and an opening / closing plate (42) of the battery-mounted carriage. A socket holding portion 74 that holds the socket 72, and a cable winding portion 76 that is provided on the opening / closing plate 42 and around which the power cable 50 is wound. The socket 72 is in an electrically floating state. [Selection] Figure 3

Description

  The present invention relates to a technology effective when applied to a plug storage mechanism and a battery-equipped carriage.

  Japanese Patent No. 4071583 (Patent Document 1) describes a technique related to a cord wrapping tool for fixing a power cord. A concave portion is formed in the cord wrapping tool, and a plug at the tip of the power cord is fixed to the concave portion (see paragraph [0021] of the specification of Patent Document 1).

Japanese Patent No. 4071583

  Examples of battery driving devices that are mounted and driven by a battery include work vehicles such as an aerial work vehicle, a forklift, and an agricultural machine, and vehicles exemplified by construction machines such as a hydraulic excavator and a bulldozer. These vehicles include an electric motor for running and driving a hydraulic pump, and a battery for supplying electric power to the electric motor. In addition, there are vehicles equipped with a battery as a starter drive and a control power source, and in recent years, there are vehicles that use both engine drive and battery drive for running and driving.

  A charger is used to charge a battery mounted on the battery driving device. Specifically, the charger includes a power cable having one end connected to the charger main body and the other end (tip) connected to a power plug. When receiving power supply from an external power source, (Socket) is connected. A configuration in which such a charger is mounted on a battery driving device together with a battery is also conceivable. In this configuration, when the battery drive device is driven, the power cable and the power plug of the charger must be securely fixed and stored. In particular, if the power plug is not fixed, even if the power cable is wound and stored, the power cable may be unwound due to vibration during driving of the battery drive device, and the power cable may be broken or damaged. .

  An object of the present invention is to provide a plug storage mechanism that can prevent a power cable from being unscrewed. The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the ideas disclosed in the present application, the outline of typical ones will be briefly described as follows. A plug storage mechanism according to one solution of the present invention is a plug storage mechanism for storing a power plug at a tip of a power cable included in an electric device, wherein a socket into which the power plug is inserted and removed, and a housing of the electric device A cable winding portion around which the power cable is wound, and a socket holding portion that is provided in the casing of the electric device and holds the socket, wherein the socket is in an electrically floating state.

  If the effect obtained by a representative one of the ideas disclosed in the present application is briefly described, the power cable can be prevented from being unwound.

It is explanatory drawing of the principal part of the battery drive device which concerns on one Embodiment of this invention. It is explanatory drawing of the battery loading trolley | bogie which concerns on one Embodiment of this invention. It is explanatory drawing of the plug storage mechanism which concerns on one Embodiment of this invention, (a) is the state before plug accommodation, (b) is the state after plug accommodation.

  In the following embodiments of the present invention, members having the same function are denoted by the same reference symbols throughout the drawings, and repeated description thereof is omitted. In addition, the number of components (including the number, numerical value, quantity, range, etc.) is limited to that specific number unless otherwise specified or in principle limited to a specific number in principle. It may be more than a specific number or less. In addition, when referring to the shape of a component, etc., it shall include substantially the same or similar to the shape, etc., unless explicitly stated or in principle otherwise considered otherwise .

  A plug storage mechanism 70 according to an embodiment of the present invention will be described with reference to the drawings together with a battery-mounted carriage 12 and a battery drive device 14 to which the plug storage mechanism 70 is applied. FIG. 1 is an explanatory diagram (schematic perspective view) of a main part of the battery drive device 14. FIG. 2 is an explanatory view of the battery-mounted carriage 12 (a schematic plan view partially seen through). 3A and 3B are explanatory views of the plug storage mechanism 70, where FIG. 3A shows a state before the plug is stored, and FIG. 3B shows a state after the plug is stored.

  In this embodiment, the battery drive device 14 will be described as a battery-driven vehicle (for example, an aerial work vehicle) including a crawler 16 for traveling. In the following description, it is assumed that the battery-powered carriage 12 including the battery unit 18 is mounted on the battery driving device 14 as it is. For this reason, the battery drive device 14 includes a storage 20 (storage unit) in which the battery-mounted carriage 12 is loaded and unloaded, and an outlet corresponding to the plug connection mechanism 10 provided in the storage 20 and provided in the battery unit 18 ( (Not shown). Therefore, the battery drive device 14 receives power supply from the battery unit 18 in a state where the battery-mounted carriage 12 is received and the plug connection mechanism 10 and the outlet are connected (that is, the battery unit 18 is mounted). To drive.

  The battery-equipped carriage 12 includes a vehicle body 24, a front wheel caster 26, and a rear wheel caster 28. The battery-equipped carriage 12 includes a vehicle body 24 that includes two fixed front wheel casters 26 provided on both sides of the front portion of the vehicle body 24 and one swivel rear wheel caster 28 provided on the rear portion of the vehicle body 24. It is supported with respect to the ground (running surface). Further, the battery-equipped carriage 12 includes a rotating rod mechanism 30. The rotation rod mechanism 30 includes a rotation shaft portion 32 and a rod 34 that rotates in a plane parallel to the side surface of the vehicle body 24 around the rotation shaft portion 32. A front wheel caster 26 is attached to the tip of the rod 34. According to the rotating rod mechanism 30, when the battery-mounted carriage 12 travels, the rod 34 projects from the vehicle body 24 and the front wheel caster 26 is grounded. On the other hand, when the battery-mounted carriage 12 is stored in the battery driving device 14, the rod 34 is positioned on the side surface side of the vehicle body 24, and the front wheel caster 26 is not grounded.

  Further, the battery-mounted carriage 12 has the vehicle body 24 inclined with respect to the ground so that the front portion of the vehicle body 24 is lifted. Specifically, the front wheel caster 26 is supported away from the vehicle body 24 by the rotating rod mechanism 30 with respect to the rear wheel caster 28. Since the storage 20 of the battery drive device 14 is separated from the ground by the crawler 16, the front part of the vehicle body 24 is lifted, so that the battery-mounted carriage 12 can be easily put in and out.

  Further, the battery-equipped carriage 12 includes a handle 36 (grip). The handle 36 is used by being pushed or pulled by an operator when the battery-mounted carriage 12 is traveled or when the battery-mounted carriage 12 is moved into and out of the battery driving device 14. The handle 36 has, for example, a rod shape and is detachably attached to the vehicle body 24 by an operator. The handle 36 is attached to the rear portion of the vehicle body 24 so as to extend obliquely upward to the rear of the vehicle body 24. On the other hand, the handle 36 is attached to the side of the vehicle body 24 when the battery-mounted carriage 12 is stored in the battery driving device 14. Specifically, the handle 36 is stored in a storage case 38 provided in the battery-mounted carriage 12.

  The battery-equipped carriage 12 includes a front bumper 40 and an opening / closing plate 42 (opening / closing door). The front bumper 40 and the opening / closing plate 42 are provided on the front side and the rear side of the vehicle body 24, respectively. Therefore, the front bumper 40 and the opening / closing plate 42 are also a part of the vehicle body 24. The front bumper 40 comes into contact with a locking portion (not shown) in the storage 20 as positioning when the battery-mounted carriage 12 is stored in the battery drive device 14. When the battery-mounted carriage 12 travels, the opening / closing plate 42 falls to the rear side of the vehicle body 24 (opened state). On the other hand, the opening / closing plate 42 is in an upright state (closed state) on the storage 20 side so as to close the opening of the storage 20 when the battery-mounted carriage 12 is installed in the battery drive device 14. .

  Further, the battery-mounted carriage 12 includes a battery unit 18 and a charger 46 as electrical devices, and these are mounted on the vehicle body 24. The battery unit 18 includes a plurality of 24V batteries 48, for example, which are connected in series. In FIG. 2, four batteries 48 are arranged in a line in front and rear of the vehicle body 24. The charger 46 includes a power cable 50 (power cord) and a power plug 52. The power cable 50 has one end connected to the main body of the charger 46 and the other end (tip) connected to a power plug 52 (for example, 3 pins). The power cable 50 is connected to an external power supply when receiving power supply from an external power supply (not shown).

  Further, the battery-mounted carriage 12 includes a connection cable 54. The connection cable 54 (harness) has one end connected to the main body of the charger 46 and the other end connected to the battery unit 18. The connection cable 54 includes positive and negative cables 54p and 54m in order to charge the battery unit 18 (configured by series connection of four batteries 48). In the configuration shown in FIG. 2, the plus cable 54 p of the connection cable 54 is connected to the plus terminal of the battery 48 on the front side of the vehicle body 24, and the minus cable 54 m of the connection cable 54 is connected to the battery 48 on the rear side of the vehicle body 24. Connected to the negative terminal.

  The battery-mounted carriage 12 includes a plug connection mechanism 10. The plug connection mechanism 10 includes a cable 56 and a plug 58. The cable 56 (harness) has one end connected to the battery unit 18 and the other end (tip) connected to the plug 58. The cable 56 is configured by battery units 18 (in FIG. 2, four batteries 48 are connected in series. The number of the batteries 48 is not limited to this, and the number of the batteries 48 may be one or more, and the connection of the plurality of batteries 48 is parallel. In order to supply electric power from the battery drive device 14 to the battery drive device 14, positive and negative cables 56 p and 56 m are provided. In the configuration shown in FIG. 2, the plus side cable 56 p of the cable 56 is connected to the plus terminal of the battery 48 on the front side of the vehicle body 24, and the minus side cable 56 m of the cable 56 is connected to the minus terminal of the battery 48 on the rear side of the vehicle body 24. Connected. Since the battery unit 18 is stored in the vehicle body 24 (housing), the cable 56 is taken out through the partition plate 24a of the vehicle body 24.

  Further, the battery-mounted carriage 12 includes a plug storage mechanism 70. The plug storage mechanism 70 stores the power plug 52 at the tip of the power cable 50 provided in the charger 46. The plug storage mechanism 70 includes a socket 72, a socket holding part 74, and a cable winding part 76. The power plug 52 is inserted into and removed from the socket 72. The socket holding unit 74 holds the socket 72 in a fixed manner. The cable winding portion 76 is wound with the power cable 50 when the power cable 50 and the power plug 52 are housed.

  The socket 72 includes a pin hole 72 a corresponding to the pin 52 a of the power plug 52. The pin 52a of the power plug 52 is inserted into the pin hole 72a, and the power plug 52 is fixed. As the socket 72, the manufacturing cost can be suppressed by using two pin holes 72a that are commercially available for home use (for mass production). As shown in FIG. 3A, when there are three pins 52 a of the power plug 52, the grounding can be arranged outside the socket 72. Here, the socket 72 is in an electrically floating state. For this reason, when the power plug 52 is housed by the plug housing mechanism 70, the charger 46 is disconnected (electrically separated).

  The socket holding part 74 is provided in the housing of the charger 46 and holds the socket 72 fixedly. In the present embodiment, the casing of the charger 46 is the vehicle body 24 of the battery-mounted carriage 12, and the socket holding portion 74 is provided on the opening / closing plate 42 of the vehicle body 24. For example, the plate member is bent so as to sandwich the socket 72, and the socket holding portion 74 holds the socket 72 fixed by a holding member such as a screw corresponding to the through hole of the socket 72. Since the socket 72 is fixed to the socket holding portion 74, the power plug 52 can be easily inserted and removed from the socket 72.

  The cable winding portion 76 is provided on the opening / closing plate 42 of the vehicle body 24. In the cable winding portion 76, for example, a pair of plate members rises with a gap therebetween, and an elastic member (for example, rubber) is provided on each of them, and the power cable 50 is wound thereon. According to this elastic member, the wound power cable 50 is protected. In this embodiment, the socket holding portion 74, that is, the socket 72 is provided around (near) the cable winding portion 76, and the power cable 50 is prevented from being loosened between the socket 72 and the cable winding portion 76. doing.

  By the way, in this embodiment, the surface where the pin hole 72a of the socket 72 opens exists in the position away from the cable winding part 76. FIG. However, the present invention is not limited to this, and the surface of the socket 72 where the pin hole 72 a is opened may be located near the cable winding portion 76. According to this, the slack adjustment of the power cable 50 slackened from the cable winding part 76 can be performed.

  Here, a storage method by the plug storage mechanism 70 and a method for mounting the battery-mounted carriage 12 (battery unit 18) on the battery driving device 14 will be described. As described above, in this embodiment, the plug storage mechanism 70 is provided in the battery-mounted carriage 12.

  When the battery unit 18 is mounted on the battery drive device 14, the battery-mounted carriage 12 is stored in the storage 20 of the battery drive device 14. Thereby, the battery unit 18 is mounted (installed) on the battery driving device 14. The battery unit 18 is charged via a charger 46 connected to an external power source in advance.

  In charging, the charger 46 and the battery unit 18 are connected, and the charger and an external power source are connected. Among these, the power cable 50 and the power plug 52 that connect the external power source and the charger 46 are accommodated by the plug accommodation mechanism 70 when the battery-equipped carriage 12 enters the battery driving device 14 after charging. Specifically, the power cable 50 is wound around the cable winding portion 76 of the plug storage mechanism 70, and the power plug 52 is inserted into the socket 72. Thus, according to the plug storage mechanism 70, the power cable 50 can be prevented from being unwound.

  Next, the plug 58 is inserted into an outlet in the storage, and the battery unit 18 and the electric circuit of the battery driving device 14 are electrically connected. Next, the open / close plate 42 of the battery-mounted carriage 12 is tilted toward the storage 20 (battery driving device 14) to close the storage 20. In this manner, the battery unit 18 (battery-equipped carriage 12) can be mounted on the battery driving device 14. The battery driving device 14 on which the battery unit 18 is mounted can be driven using the electric power of the battery unit 18. When the battery unit 18 is lowered (shipped) from the battery drive device 14, these procedures (steps) may be returned.

  Thus, according to the plug storage mechanism 70, the power cable 50 can be prevented from being unwound. As a result, even if the battery-mounted carriage 12 moves or the battery driving device 14 with the battery-mounted carriage 12 is driven, the power cable 50 is unwound, and the power cable 50 is broken or damaged. Can be prevented. In addition, by providing the plug housing mechanism 70 in the battery-mounted carriage 12, it is possible to prevent the power cable 50 from being broken and damaged, and to improve the product life and reliability of the battery-mounted carriage 12 and the battery driving device 14.

  As mentioned above, although this invention was concretely demonstrated based on embodiment, it cannot be overemphasized that this invention is not limited to the said embodiment, and can be variously changed in the range which does not deviate from the summary.

  For example, in the above-described embodiment, the case where the plug storage mechanism is applied to a battery-mounted carriage has been described. However, the present invention is not limited to this, and the plug storage mechanism can also be applied to a charger. That is, the present invention can also be applied to a configuration in which a charger is mounted on a battery drive device instead of a cart and a battery is connected via a plug storage mechanism. Thereby, even if a battery drive device vibrates by driving, it is possible to prevent the power cable from being unwound and the power cable from being broken or damaged.

  Further, the plug storage mechanism can be applied to an electric device such as a home appliance. According to this, it is possible to prevent the power cable from being unwound, and it is possible to prevent the power cable from being broken or damaged.

10 Plug connection mechanism; 12 Battery-mounted carriage; 14 Battery drive;
16 crawlers; 18 battery units; 20 storage;
24 Car body; 24a Partition plate; 26 Front wheel caster;
28 rear wheel casters; 30 rotating rod mechanism; 32 rotating shaft portion;
34 rod; 36 handle; 38 storage case;
40 Front bumper; 42 Opening and closing plate; 46 Battery charger;
48 battery; 50 power cable; 52 power plug;
54 connection cable; 56 cable; 58 plug;
70 Plug storage mechanism; 72 socket; 74 socket holder;
76 Cable winding part.

Claims (2)

A plug storage mechanism for storing a power plug at the tip of a power cable provided in the electric device,
A socket into which the power plug is inserted and removed;
A socket holding part that is provided in a housing of the electric device and holds a socket;
A cable winding portion provided in a casing of the electric device and around which the power cable is wound;
With
A plug housing mechanism, wherein the socket is in an electrically floating state. A battery-equipped carriage comprising the plug storage mechanism according to claim 1, a vehicle body, and a battery.
The electric device comprises a charger for charging the battery;
The charger is mounted on the vehicle body;
A battery-equipped carriage, wherein a casing of the electric device is the vehicle body.

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