JP2020083256A - Carriage with voice alarm - Google Patents

Abstract

To enable generating alert sound in a state that there is a possibility of collision with surroundings, and to prevent the generation of alert sound in a state that there is little possibility of collision with surroundings.SOLUTION: A carriage with a voice alert is equipped with a platform 1 for loading a cargo, a handle 2 for traveling and steering, a caster 3 for moving, and a brake means 4 for brake-locking the caster 3. The carriage with the voice alert is also equipped with a voice output means 5 for emitting alert sound to surroundings. The brake means 4 is equipped with a switch and operation lever 41 for releasing the brake-locking and enabling the output of voice. While the handle 2 is raised, if gripping the switch and operation lever 41, the brake-locking is released, and the voice output means 5 emits the alert sound.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a truck with a voice alarm linked to a brake, which contributes to the safety of the surroundings by emitting a sound during traveling.

Hand-carried carts are used in factories, warehouses, etc. for the purpose of placing and carrying luggage and goods. In order to ensure the safety of the surroundings during traveling, various contrivances have been made to this carrier truck. For example, it is a carrier truck provided with a mechanism for locking wheels in consideration of traveling safety (Patent Document 1).

Patent Document 1 discloses a brake mechanism including an operation lever, a connecting rod fitted in a support column of a handle, and a brake rod or the like that is urged by a spring to constantly press the outer peripheral surface of a fixed wheel. When the operating lever is not operated, the brake portion is pressed against the outer peripheral surface of the fixed wheel to prevent the fixed wheel from rotating, and the brake acts against the urging force of the urging member from the fixed wheel when the operating lever is operated. Disclosed is a transporting vehicle in which an operating lever and a connecting rod are integrated with a handle and are folded on a cargo bed by rotating a handle in a folding direction while allowing a fixed wheel to rotate away from the handlebar.

Further, in a place where noise is large, such as a factory or a warehouse, people around the person often do not notice that the carriage is running, and there has been a situation where the carriage collides with a person. Therefore, in consideration of the safety of the surroundings, there has been proposed a carriage having a mechanism for generating a warning sound during traveling (Patent Documents 2 and 3).

In Patent Document 2, in order to contribute to safety and public relations while driving in a town where there are many pedestrians, a thin waterproof type voice generating device is attached to the back surface of the luggage carrier, and a remote control switch is attached to the hand handle. Is disclosed.

Patent Document 3 discloses an automatic carrier truck that emits a warning sound when an obstacle detection sensor detects an obstacle around the obstacle.

JP, 2011-000979, A JP, 2008-044583, A JP-A-4-236610

However, in the conventional dolly, if the operator releases the steering wheel that steers the dolly and tries to operate the output switch of the warning sound, the trolley travels at that moment in order to generate a warning around the dolly. There was a risk of making a mistake and sometimes causing a contact accident to a person passing by. Therefore, where to set the switch of the warning sound is an important issue.
Further, in the conventional dolly, there is a possibility that a warning sound may be emitted even when the dolly is not being run or steered, which causes noise. For example, in the trolley of Patent Document 2, a warning sound may be emitted only by pressing a remote control switch, and in the trolley of Patent Document 3, a warning sound may be emitted only by a person approaching the surroundings. For this reason, in the conventional dolly, even when the dolly is transported by a truck or the like (even when the handle is folded), a warning sound is erroneously made. For example, even in the folded storage state, if a person accidentally touches it, or if an object falls due to an earthquake, etc., and the switch of the warning sound generator is touched, the warning sound will be audibly erroneously sounded forever. It sometimes caused a situation that surprised me. Further, the hand cart has only an L-shape in cross section, and when the warning sound generating device is mounted on the carrier while ensuring the maximum load capacity, there is a problem with the installation space. As described above, in the conventional bogie, there is room for studying how to provide the warning sound generating device that solves the above problems and operates reliably.

Therefore, an object of the present invention is to be able to emit a warning sound in a state where the carriage may collide with the surroundings (when the brake lock is released, while traveling, etc.), and the carriage may collide with the surroundings. It is to provide a dolly that does not emit a warning sound in a low state (when the brake is locked or when the vehicle is stopped).

In order to solve the above problems, the inventor of the present application has completed the invention of the present application by focusing on the operation of the hand-pushed handle and the braking means for the presence or absence of the warning sound of the hand-pushed truck. That is, if it is possible to detect whether or not the warning sound is generated (whether or not the warning sound is generated) by detecting whether the steering wheel is operated or the brake means is released, it is possible to generate a safe and efficient warning sound. The present invention was completed on the assumption that it can be achieved.
Therefore, the present invention is provided with a loading platform for loading luggage, a caster for moving, a handle for running and steering the cart by hand, and a voice output means for issuing a warning sound to the surroundings, and by gripping with the handle. By providing a switch-combined operation lever for outputting or enabling the sound output of the sound output means, the sound output means emits a warning sound by operating the handle and the switch-combined operation lever. Or a state in which a warning sound can be emitted.
Here, "to hold the handle together with the handle to cause the voice output means to output a voice or enable a voice output" means, for example, to emit a warning sound from the voice output means at the same time as the handle operation. But good. Alternatively, when the switch/operation lever is manually operated, a voice output instruction may be wirelessly given to the voice output means (a warning sound is generated). Further, the alarm sound of the voice output means may be sounded by pushing the switch of the voice output means with the thumb of the hand while operating the handle. The "warning sound" is a sound that can alert people around the dolly to the attention. For example, recorded human voice, mechanical artificial voice and/or melody.
The "switch" of the "switch/operation lever" is a switch that gives a voice output instruction to the voice output means or a switch that gives a voice output ready state (voice output preparation state). is there.
According to the present invention, it is possible to give an instruction to output the voice of the voice output unit that emits a warning sound to the surroundings or to put the voice output into a state in which the voice can be output when necessary while traveling. Therefore, the warning sound can be generated only when the warning is required. Further, since the alarm sound of the voice output means can be generated together with the operation of the steering wheel for manually driving and steering the trolley, the trolley can be safely driven and steered.
The present invention further includes a loading platform for loading luggage, a caster for moving, a brake means for brake-locking the caster, a steering wheel for steering, and a voice output means for issuing a warning sound to the surroundings. The means includes a switch-combined operation lever, the switch-combined operation lever is for releasing the brake lock, and is for outputting a sound from the sound output means or enabling a sound output. The brake lock is released by the operation of gripping the switch/operation lever, and the sound output means emits a warning sound or a state in which the warning sound can be generated.
According to the present invention, it is possible to emit a warning sound when there is a possibility that the dolly will collide with the surroundings (when the brake lock is released, while traveling, etc.), and when the brake is locked, the warning sound is emitted. Since there is no sound, it is possible to avoid annoying the surroundings by accidentally generating a warning sound while driving.

According to the present invention, a brake means for brake-locking the caster is provided, and the handle is foldable with respect to a loading platform. When the handle is folded, the brake lock of the brake means is not released. Although the voice output means does not emit a warning sound, when the handle is erected to enable traveling and steering of the carriage and then the switch/operation lever is gripped, the brake lock is released and the voice It is characterized in that the output means emits a warning sound.
According to the present invention, it is possible to emit a warning sound in a state where the dolly may collide with the surroundings (when the brake lock is released, while traveling, etc.), but the dolly may collide with the surroundings. In an unfavorable state (when the brake is locked, while the vehicle is stopped, etc.), no warning sound is emitted and unnecessary warning sounds can be avoided.

In the present invention, the voice output unit further includes an output unit that emits a warning sound, and a brake detection unit that detects release of the brake lock and instructs the output unit to emit a warning sound. Is a member that displaces when the brake lock is released, and is arranged in the vicinity of a member that does not displace when the handle is folded, so that when the handle is folded, the brake lock Is not released, and the voice output means does not emit a warning sound.
In the present invention, the brake means is a member that is displaced with release of a brake lock, and the brake means includes a lower parallel member extending from the cooperative operation member below the luggage carrier. The member that is displaced according to the brake lock and is not displaced when folded is at least one of the cooperative operation member and the lower parallel member.
In the present invention, “displacement” refers to a change in position. In one embodiment of the present invention, "a member that is displaced when the brake lock is released" is a member that constitutes a braking means, such as a switch/operation lever, a Y-shaped member, a vertical rod, and a cooperating member. And the lower parallel member. Of these, in one embodiment of the present invention, the "members that do not displace when the handle is folded" are the cooperative operation member and the lower parallel member. In the present invention, “near” means a range in which the brake detection means can detect the displacement of the member (for example, the cooperating member, the lower parallel member).
According to the present invention, by disposing the brake detection means at such a position, the brake lock is not released when the steering wheel is folded, and the voice output means does not emit a warning sound.

In the trolley with a voice alarm of the present invention, the brake means includes a cooperative operation member that transmits the operation of the switch/operation lever, and an adjustment for adjusting a distance between the switch/operation lever and an upper end of the cooperation operation member. A mechanism is further provided, and in a state in which the handle is folded, the handle and the switch/operation lever are in contact with each other so that the brake lock cannot be released.
According to the present invention, it is possible to release the brake lock when it is desired to drive the trolley with the voice alarm, and when the handle is folded (when the trolley with the voice alarm is not driven), the handle and the switch-operation lever are in contact with each other. Since the brake lock cannot be released by touching it, safety is improved.

ADVANTAGE OF THE INVENTION According to this invention, it is possible to emit a warning sound in the state where a truck may collide with the surroundings, and to emit a warning sound in a state where there is a low possibility that the truck collides with the surroundings. Can be provided.

It is a right side schematic diagram which shows the trolley|bogie 100 with a sound alarm which concerns on embodiment of this invention. It is a rear schematic diagram which shows the trolley|bogie 100 with a voice warning which concerns on the said embodiment. It is an expansion schematic diagram which looked at the rear part of truck 100 with a voice warning concerning the above-mentioned embodiment from the lower part. It is a bottom expansion perspective view of the trolley|bogie 100 with a voice warning which shows the brake detection means 53 which concerns on the said embodiment. It is a side view of the left rear caster 32 of the trolley|bogie 100 with a voice warning which concerns on the said embodiment. It is an expansion schematic diagram explaining the brake lock operation|movement of the trolley|bogie 100 with a voice warning which concerns on the said embodiment. It is a side view of the left rear caster 32 of the trolley|bogie 100 with a voice warning which concerns on the said embodiment. It is a front enlarged schematic diagram which shows the trolley|bogie 100 with a voice warning which concerns on the said embodiment.

(First embodiment)
FIG. 1 is a right side view showing a vehicle with an audio alarm 100 according to an embodiment of the present invention, in which a handle 2 and a braking means 4 in a folded state are shown by dotted lines. FIG. 2 is a schematic rear view showing the trolley 100 with a voice alarm according to the present embodiment.

The trolley|bogie concerning embodiment of this invention is the trolley|bogie 100 with an audio alarm which emits a warning sound. The dolly 100 with a voice alarm is a dolly used for transporting luggage in factories, warehouses, work places, processing plants, offices, airports, rotary buses, station platforms, hospitals, and the like. Especially, it is effective in places where the surroundings are noisy due to noise, crowded places, places with poor visibility, etc. Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

A trolley 100 with a voice alarm according to the present embodiment includes a loading platform 1 on which luggage is loaded, a handle 2 for traveling and steering the trolley 100, a plurality of casters 3 for moving, and a brake for locking the casters 3. Means 4 and voice output means 5 for emitting a warning sound to the surroundings are provided (FIG. 1).

The loading platform 1 is a rectangular platform that is used to place a load and has a predetermined thickness, and a handle 2 is provided upright on the panel of the platform 1 and on the rear side. A plurality of casters 3 are provided at the bottom of the luggage carrier 1. The handle 2 is attached with a switch/operation lever 41 which is a part of a brake means 4 described later. The lower parallel member 45, which is a part of the brake unit 4, is operated via the link operation unit 44 that links with the switch/operation lever 41, and the locking rod 452 of the lower parallel member 45 moves backward. It is engaged with the casters 32.

The luggage carrier 1 is made of resin and/or metal material. A connecting portion 11 is provided upright on the left and right side surfaces of the luggage carrier 1 on the rear wheel side. The connecting portion 11 is engaged with the handle 2 and has a folding rod 111 for folding the handle 2 forward (FIG. 2 ).

The handle 2 is used to steer the trolley 100 with an audio alarm. When viewed from the side, the handle 2 has an upper portion inclined rearward, and both ends are attached to the rear of the luggage carrier 1 via a connecting portion 11 so as to be foldable (FIG. 1 ). The handle 2 has a shape in which both ends of a substantially U-shaped pipe are engaged with the connecting portions 11 of the luggage carrier 1 when viewed from the front, and a support plate 21 for laterally supporting luggage is provided at a middle position ( (Fig. 2). An output unit 51 of the audio output unit 5 is attached to the support plate 21. Two holes are provided in the upper portion of the handle 2, and both upper end portions of the Y-shaped member 42 penetrate therethrough.

The plurality of casters 3 are used to move the position of the trolley 100 with an audio alarm. The plurality of casters 3 includes a pair of left and right front casters 31 provided at the front of the lower part of the luggage carrier 1 and a pair of left and right rear casters 32 provided at the rear (FIG. 1 ). The front caster 31 is a freely movable caster that can be freely moved back and forth and left and right, and is composed of a left front caster provided on the left front side and a right front caster provided on the right front side. The rear caster 32 is a fixed caster that can move only in the front-rear direction, and includes a left rear caster 321 provided on the left rear side and a right rear caster 322 provided on the right rear side (FIG. 2 ).

Each caster 3 includes wheels 3A, an axle 3B, and a bracket 3C (FIG. 2). For example, the rear caster 32 includes rear wheels 3A, of which the left rear caster 321 includes the left rear wheel 3A and the right rear caster 322 includes the right rear wheel 3A. Both ends of the axle 3B are connected to the bracket 3C, and the bracket 3C is arranged on both sides of the wheel 3A with the wheel 3A interposed therebetween. The wheel 3A is supported by the axle 3B and the bracket 3C.

The wheel 3A includes a lock engaging portion 3A1 that is an uneven metal member (FIGS. 3 and 4). The lock engaging portion 3A1 is fixed to the inner side of the rear wheel 3A by a bolt and a nut, and when viewed from the front of the bogie 100, an uneven portion is provided over the entire outer circumference. As described later, normally, the left and right claw portions 4521 of the brake means 4 are engaged with the left and right locking engagement portions 3A1, respectively, so that the brake is locked.

The braking means 4 is used to brake lock the rear wheels 3A (FIGS. 1 and 2). Further, the braking means 4 is used to give an audio output instruction to the audio output means 5, or to give an audio output ready state (audio output preparation state). The brake means 4 is composed of a switch/operation lever 41, a Y-shaped member 42, a vertical rod 43, a cooperative operation member 44, and a lower parallel member 45. The brake means 4 is engaged with the handle 2 and the lock engaging portion 3A1.

The switch/operation lever 41 has a function of releasing the brake lock. Further, the switch/operation lever 41 has a switch function for instructing the voice output means 5 to output voice, or a switch function for instructing the voice output means 5 to be in a voice output ready state (voice output preparation state). In this embodiment, the voice output switch is turned on and the brake lock is released by the force (grip action) of pressing the switch/operation lever 41. The switch/operation lever 41 is provided above the handle 2 as a single member horizontally to the handle 2. A Y-shaped member 42 is connected to the switch/operation lever 41. With this, it is possible to simultaneously grip the switch/operation lever 41 together with the handle 2 and operate them simultaneously. The switch/operation lever 41 is arranged inside the inverted U-shaped handle 2 so that the switch/operation lever 41 is grasped and the switch/operation lever 41 is lifted when the handle is operated. It may be in a state of becoming. By disposing the switch/operation lever 41 inside the inverted U-shaped handle 2, it is possible to reduce the situation of contact with an obstacle.

The Y-shaped member 42 is a substantially Y-shaped metal material (FIGS. 1 and 2). Both upper ends of the Y-shaped member 42 respectively penetrate two holes provided in the upper portion of the handle 2 and are joined to the switch/operation lever 41. The lower part of the Y-shaped member 42 is made of one metal rod, the upper part of the metal rod is branched and extended in two hands, and both upper ends of the branched rods are further extended vertically upward, and the switch/operation lever 41 is provided. Link. The lower end of the Y-shaped member 42 is fitted with the upper end of the vertical rod 43.

The lower end of the Y-shaped member 42 and the upper end of the vertical rod 43 adjust the length of the braking means (the distance between the switch/operation lever 41 and the rotary shaft 431 at the upper end of the cooperative operation member 44). (FIG. 2). As the adjusting mechanism 421, the Y-shaped member has a tubular structure, and the inner diameter of the Y-shaped member 42 is larger than the outer diameter of the vertical rod 43. The upper end of the vertical rod 43 is inserted into the pipe of the Y-shaped member 42 and has a fitting structure. Inside the pipe of the Y-shaped member 42, there is provided a locking member (not shown) that stops the vertical movement of the Y-shaped member 42 at a predetermined vertical position by engaging with the upper end of the vertical rod 43. As a result, the adjusting mechanism 421 floats the switch/operation lever 41 from the handle 2 in a state in which the handle 2 is erected on the platform 1. On the other hand, when the handlebar 2 is folded forward, the rotary shaft of the handlebar 2 is located in front of the rotary shaft 431 of the brake means 4, so that the handlebar 2 comes into contact with the handlebar 41, and the handlebar 41 also operates as a switch. The distance from the rotation shaft 431 is increased. Therefore, even if an attempt is made to grasp the switch/operation lever 41 with the handle 2 folded forward, the handle 2 and the switch/operation lever 41 will not move when the distance between the switch/operation lever 41 and the vertical rod 43 is extended. Since they are in contact with each other, the cooperative operation member 44 cannot be pushed down, and the brake lock is not released.

As described above, when it is desired to drive the dolly 100 with the voice alarm, the brake lock can be released, and when the handle 2 is folded (when the trolley 100 with the voice alarm is not run), the switch/operation lever 41 and the rotation can be rotated. When the distance between the shaft 431 and the shaft 431 is extended, the handle 2 and the switch/operation lever 41 come into contact with each other so that the brake lock cannot be released. Therefore, the warning sound does not sound accidentally during transportation. Further, when the carriage 100 is folded, the steering wheel cannot be operated, and the safety is improved.

The lower end of the vertical rod 43 is rotatably connected to the upper part of the cooperative operation member 44 via the rotating shaft 431. The cooperation operation member 44 has a U-shape and transmits the operation of the switch/operation lever 41 to the lower parallel member 45, which is a part of the brake means 4, below the loading platform 1. In this way, the pressing force (switch input) from the switch/operation lever 41 arranged in parallel to the handle 2 is applied to the entire braking means 4 along the L-shaped carriage 100. There is.

FIG. 3 is an enlarged schematic view of the rear part of the audible alarm cart 100 according to the present embodiment as seen from below, showing a part of the rear caster 32 and the braking means 4. FIG. 4 is an enlarged perspective view of the bottom of the vehicle 100 with a voice alarm showing the brake detection means 53 according to the present embodiment. FIG. 5 is a schematic side view of the left rear caster 32 before the brake lock releasing operation (the brake locked state) of the audible alarm cart 100 according to the present embodiment.

The lower parallel member 45 extends from the cooperation operation member 44 below the luggage carrier 1 (FIGS. 3 and 4). The lower end of the cooperative operation member 44 and the upper end of the lower parallel member 45 are fixed to each other, and the relative positional relationship does not change. That is, the lower parallel member 45 and the cooperation operation member 44 are integrated members and are integrally displaced. In this way, the cooperation operation member 44 transmits the operation of the switch/operation lever 41 to the lower parallel member 45. The lower parallel member 45 is horizontally provided on the lower portion of the luggage carrier 1. The lower parallel member 45 includes a connecting member 451, a locking rod 452, and a supporting rod 453, and two horizontal rods (the locking rod 452 and the supporting rod 453) are fixed and integrated by the connecting member 451. It was done.

The locking rod 452 is located between the left and right rear casters 32. The locking rod 452 includes a claw portion 4521, a biasing spring 4522, and a pressing portion 4523 (FIGS. 3 and 4).

Both ends of the locking rod 452 are connected to the claw portion 4521, and the claw portion 4521 penetrates the bracket 3C (FIGS. 3-5 and 8). The left and right claw portions 4521 engage with the recesses in the outer peripheral portion of the locking engagement portion 3A1 provided on the wheel 3A (FIGS. 5, 7-8).

The locking rod 452 and the left and right claw portions 4521 are biased toward the locking engagement portion 3A1 side (direction of arrow a5) by a biasing spring 4522 which is an elastic member (FIG. 5). One end side of the biasing spring 4522 is connected to the support rod 453, and the other end side is connected to the locking rod 452 and the claw portion 4521 (FIGS. 3 and 5).

The pressing portion 4523 is arranged so as to be able to press the brake detection means 53 when the locking rod 452 rotates upward (FIGS. 3 and 4).

The support rod 453 is located behind the locking rod 452. The support rod 453 has bearing means 4511 fixed to the luggage carrier 1, and the support rod 453 rotates via the bearing means 4511. Therefore, when viewed from the side of the carriage 100, the cooperative operation member 44 and the lower parallel member 45 rotate about the support rod 453 (FIGS. 5-7).

The voice output means 5 is used to emit a warning sound (FIG. 2). The voice output unit 5 outputs an alarm sound, a battery 52 that supplies electric power to the output unit 51, a brake detection unit 53 that detects the release of the brake lock, and instructs the output unit 51 to generate an alarm sound. And a cable 54 for transmitting the instruction from the brake detection means 53 to the output section 51 (FIG. 2-4). The output part 51 and the battery 52 are integrally attached to the support plate 21. The brake detection means 53 and the output section 51 are connected via a cable 54.

The brake detection unit 53 is used to detect a brake lock and give a voice output instruction (or a voice output preparation instruction for enabling voice output) to the output unit 51 so as to emit a warning sound. (Figs. 3, 4). The brake detection means 53 is arranged on the lower surface of the luggage carrier 1. The brake detection means 53 is located above the pressing portion 4523 of the locking rod 452 and detects the vertical movement of the locking rod 452.

(How to use the dolly 100 with voice alarm)
A method of using the trolley 100 with a voice alarm according to the embodiment of the present invention will be described below.

FIG. 6 is an enlarged schematic diagram for explaining the brake lock operation of the vehicle 100 with a voice alarm according to the above embodiment. The part indicated by the dotted line shows the brake means 4 in a state where the switch/operation lever 41 is not gripped and the brake is locked. The portion shown by the solid line shows the brake means 4 in a state where the brake lock is released by grasping (pushing downward) the switch/operation lever 41. FIG. 7 is a schematic side view of the left rear caster 32 after the brake lock releasing operation of the audible alarm cart 100 according to the present embodiment. FIG. 8 is an enlarged schematic front view showing the trolley 100 with a voice alarm according to the present embodiment.

Normally, when the handlebar 2 is folded, or when the trolley is stopped, and the switch/operation lever 41 is opened, no external force is applied to the brake means 4 and the wheels 3A are locked. The left and right claw portions 4521 provided on the locking rod 452 of the braking means 4 mesh with the locking engagement portions 3A1 provided on the left and right rear wheels 3A, respectively, whereby the brake is locked (FIG. 5). The claw portion 4521 is constantly urged toward the locking engagement portion 3A1 side by the elastic force of the attached urging spring 4522 (arrow a5).

The states of FIGS. 6 and 7 are the states when the trolley in which the wheels 3A are unlocked by the external force applied to the braking means 4 is running. When the truck is run, a downward external force is applied to the brake means 4. By pushing down the switch/operation lever 41, the claw portion 4521 moves in an interlocking manner, the engagement with the locking engagement portion 3A1 is released, and the lock is released.

More specifically, when the handle 2 is erected and the switch/operation lever 41 is grasped (pushed downward) (arrow a1 in FIG. 6), the Y-shaped member 42 and the vertical rod 43 cooperate with each other. The force is transmitted to the operating member 44. When the force is transmitted to the cooperative operation member 44, the connecting portion 431 where the vertical rod 43 and the cooperative operation member 44 are joined moves backward (arrow a2). Then, the cooperative operation member 44 moves in the clockwise direction integrally with the lower parallel member 45 (arrow a3). The cooperation operation member 44 and the lower parallel member 45 also move in the clockwise direction at the bottom of the luggage carrier 1 (arrow a4). Then, the lower parallel member 45 moves clockwise around the support rod 453 (or the bearing member 4511) when viewed from the side, so that the locking rod 452 also rotates clockwise (FIG. 7). The left and right claw portions 4521 that are integrated with the locking rod 452 also rotate integrally, so that the bias spring 4522 is elastically deformed. In this way, the claw portion 4521 moves in the direction of retreating from the locking engagement portion 3A1 of the wheel 3A (arrow a6). Therefore, the claw portion 4521 of the locking rod 452 and the locking engagement portion 3A1 of the wheel 3A are disengaged, and the brake lock is released.

As described above, the braking means 4 (the switch/operation lever 41, the Y-shaped member 42, the vertical rod 43, the cooperative operation member 44, and the lower parallel member 45) is a member that is displaced along with the release of the brake lock. By gripping the switch/operation lever 41, the claw portion 4521 is displaced, the engagement with the locking engagement portion 3A1 is released, and the brake lock is released.

Further, even if an external force is applied to the braking means 4 and the wheel 3A is unlocked, the elastic force of the biasing spring 4522 always applies a force in the direction of biasing the claw portion 4521 toward the lock engaging portion 3A1. ing. Therefore, when the carriage 100 is traveling, an external force is constantly applied to the braking means 4 so that the wheels 3A are unlocked.

On the other hand, when it is desired to lock the wheels 3A, the force applied to the braking means 4 may be removed. When the hand pushing the brake means 4 is removed when the dolly 100 is running, no external force is applied to the claw portion 4521 of the locking rod 452, and the claw portion 4521 is moved in the locking engagement portion 3A1 direction by the elastic force of the biasing spring 4522. Be energized. Therefore, the wheel 3A is locked again. Therefore, it is sufficient to perform the unlocking operation only when the user wants to unlock, and the labor of the operation can be saved.

When the locking rod 452 rotates upward with the release of the brake lock, the pressing portion 4523 provided on the locking rod 452 also moves upward, and the pressing portion 4523 presses the brake detection means 53 (FIG. 3, FIG. 4, 7, 8). As a result, the brake detection unit 53 detects the vertical movement of the locking rod 452 as the movement associated with the brake lock release. When the brake detection unit 53 detects the release of the brake lock, the brake detection unit 53 gives an audio output instruction to the output unit 51, and the output unit 51 emits a warning sound.

The brake detection means 53 does not necessarily have to be arranged above the locking rod 452. For example, the cooperative operation member 44, the lower parallel member 45, and the like (a member that is displaced when the brake lock is released) are used. Also, it may be arranged in the vicinity of a member that does not displace when the handle is folded), and is arranged so that any one of these movements associated with the release of the brake lock can be detected.
Further, in the present embodiment, the brake detection means 53 gives an audio output instruction to the output section 51, but may also give an audio output preparation instruction to the output section 51 so that the audio output is possible. Of course, the voice output instruction itself may be carried by another switch (not shown).

The switch/operation lever 41 and the Y-shaped member 42 are members that are displaced when the brake lock is released, and are also displaced when folded. Therefore, if the brake detection means 53 is arranged in the vicinity of the switch/operation lever 41 and the Y-shaped member 42 and the displacement thereof is detected as the brake lock release, when the handle 2 is folded, the folding operation is performed. The brake detection unit 53 may erroneously detect that the brake is unlocked.

On the other hand, the cooperative operation member 44 and the lower parallel member 45 (the support rod 453 and the locking engagement portion 3A1) are members that are displaced when the brake lock is released and that are not displaced when folded. The brake detection means 53 is arranged in the vicinity thereof so as to be able to detect the displacement of the cooperative operation member 44 and the lower parallel member 45, so that the voice output means 5 emits a warning sound in a state where the steering wheel is erected. Is possible. On the other hand, when the handlebar 2 is folded, the lock engagement portion 3A1 is not displaced, so the brake lock is not released, and the folding operation is erroneously detected as the brake lock release by the brake detection means 53. Therefore, the voice output means does not emit a warning sound.

As described above, in the audible alarm-equipped trolley 100, when the switch/operation lever 41 is gripped with the handle 2 set upright, the brake lock is released and the audible output means 5 emits a warning sound. On the other hand, when the handlebar 2 is folded, the brake lock is not released and the voice output means 5 does not emit a warning sound. Therefore, while a warning sound is emitted in a state where the dolly 100 may collide with the surroundings (when the brake lock is released, while driving, etc.), a state in which the dolly is less likely to collide with the surroundings (brake lock No warning sound will be emitted when the signal is displayed or when the vehicle is stopped.

(Second embodiment)
The trolley|bogie concerning embodiment of this invention is the trolley|bogie 100A with a light output function which used the audio|voice output means 5 of the trolley|bogie 100 with a voice warning shown in 1st Embodiment instead of the optical output means 5A. Thereby, the trolley|bogie of this Embodiment emits a warning light instead of a warning sound. The sound output means 5 of the second embodiment is the same as the device configuration and usage method of the first embodiment, except that it is replaced with the light output means 5A (not shown). The same points as those in the first embodiment will be omitted.

The “warning light” is light capable of calling attention to people around the dolly, and is, for example, light of an illumination light using an LED or the like or light of a rotating light used in a police car or the like. .. The light output unit 5A includes an output unit 51A that emits light, a battery 52A that supplies electric power to the output unit 51A, a brake detection unit 53A, and a cable 54A (not shown). The brake detection means 53A and the output unit 51A are connected via a cable 54A. The output unit 51A is an illumination lamp using an LED lamp or the like, or a rotating lamp used in a police car or the like. The output unit 51A and the battery 52A are integrally attached to the support plate 21A. The output unit 51A may be attached to the handle or the bed.

When the brake detection unit 53A detects the release of the brake lock caused by the vertical movement of the locking rod 452A, the brake detection unit 53A gives an optical output instruction to the output unit 51A, and the output unit 51A emits a warning light to notify the surroundings. For example, if the output unit 51A is an illumination lamp such as an LED lamp, the warning light is emitted by lighting or blinking. If the output unit 51A is a rotating lamp used for a police car or the like, the output unit 51A lights up and rotates to emit a warning light.

The present invention is not limited to the above-described embodiments, but can be modified as appropriate without departing from the spirit of the invention. For example, although the handle 2 has an inverted U shape, a voice output switch (a switch/operation lever 41 etc.) for the voice output means 5 is attached to the inside of the U shape of the handle 2 to operate the handle. However, the voice output switch of the voice output means 5 may be wirelessly turned on (a warning sound is generated) by operating the switch/operation lever 41 by hand. Further, a voice output switch for the voice output means 5 (a switch/operation lever 41 etc.) is attached to the inside of the U-shape of the handle 2, and the voice of the voice output means 5 can be operated by the thumb of the hand while operating the handle. The alarm sound of the voice output means 5 may be sounded by pressing the output switch. Further, the present invention can be widely applied to a trolley having a handle operation, such as a push-pull type trolley 100, and a foldable handle is more preferable.

100 dolly with voice alert,
1 loading platform,
2 handles,
3 casters,
3A rear wheel,
3A1 locking engagement part,
4 braking means,
41 Operation lever that doubles as a switch
42 Y-shaped member,
43 vertical rod,
44 Cooperation operation member,
45 lower parallel member,
452 Locking rod,
4521 claw portion (a claw portion that meshes with the locking engagement portion 3A1),
4522 bias spring,
a5 biasing direction of biasing spring,
5 audio output means,
5A light output means,
51 Output unit that emits a warning sound,
52 battery,
53 Brake detection means,
54 cable

In order to solve the above problems, the inventor of the present application has completed the invention of the present application by focusing on the operation of the hand-pushed handle and the braking means for the presence or absence of the warning sound of the hand-pushed truck. That is, if it is possible to detect whether or not the warning sound is generated (whether or not the warning sound is generated) by detecting whether the steering wheel is operated or the brake means is released, it is possible to generate a safe and efficient warning sound. The present invention was completed on the assumption that it can be achieved.
Therefore, the present invention provides a loading platform for loading luggage, a caster for moving, a brake means for brake-locking the caster, a handle for manually running and steering the cart, and an audio output means for issuing a warning sound to the surroundings. The handle is foldable with respect to the luggage carrier, and when the handle is folded, the brake lock of the brake means is not released and the voice output means does not emit a warning sound. When the steering wheel is erected so that the truck can be run and steered, the brake lock is released, and the voice output means emits a warning sound or a warning sound.
Here, "to hold the handle together with the handle to cause the voice output means to output a voice or enable a voice output" means, for example, to emit a warning sound from the voice output means at the same time as the handle operation. But good. Alternatively, when the switch/operation lever is manually operated, a voice output instruction may be wirelessly given to the voice output means (a warning sound is generated). Further, the alarm sound of the voice output means may be sounded by pushing the switch of the voice output means with the thumb of the hand while operating the handle. The “warning sound” is a sound that can alert people around the dolly to the attention. For example, a recorded human voice, a mechanical artificial voice and/or a melody.
The “switch” of the “switch/operation lever” is a switch for instructing the audio output means to output audio, or a switch for instructing the audio output means to be in a state in which audio output is possible (audio output preparation state). is there.
According to the present invention, it is possible to issue an instruction to output the voice of the voice output unit that emits a warning sound to the surroundings or to put the voice output into a state in which the voice can be output when necessary while traveling. Therefore, the warning sound can be generated only when the warning is required. Further, since the alarm sound of the voice output means can be generated together with the operation of the steering wheel for manually driving and steering the trolley, the trolley can be safely driven and steered.
Further, the present invention is a loading platform for loading cargo, a caster for moving, a brake means for brake-locking the caster, a handle for manually running and steering the cart, and a sound for issuing a warning sound to the surroundings. Output means, the brake means further comprises a switch/operation lever, the switch/operation lever is for releasing the brake lock, and outputs a voice from the voice output means or outputs a voice. It is a state in which output is possible, and the brake lock is released by the operation of gripping the switch/operation lever, and the voice output means emits a warning sound or a warning sound can be generated. It is characterized by
According to the present invention, it is possible to emit a warning sound when there is a possibility that the dolly will collide with the surroundings (when the brake lock is released, while traveling, etc.), and when the brake is locked, the warning sound is emitted. Since there is no sound, it is possible to avoid annoying the surroundings by accidentally generating a warning sound while driving.

Claims (6)

A loading platform for loading luggage, a caster for moving, a handle for running/steering the trolley by hand, and a voice output means for emitting a warning sound to the surroundings are provided, and the voice output means of the voice output means is grasped together with the handle. By providing a switch-combined operation lever for outputting a voice or making a sound output possible, the voice output means emits a warning sound or emits a warning sound by operating the switch-combined operation lever together with the operation of the handle. A dolly with a voice alarm characterized by the fact that it can be emitted. A loading platform for carrying luggage, a caster for moving, a brake means for brake-locking the caster, a steering wheel for steering, and a voice output means for issuing a warning sound to the surroundings, the brake means serving as a switch. The switch-combined operating lever further comprises a lever for releasing the brake lock, and for outputting or enabling the audio output of the audio output means. A trolley with a voice alarm, characterized in that the brake lock is released by the operation of gripping the operation lever, and the voice output means outputs a warning sound or a state in which the warning sound can be generated. A brake means for brake-locking the caster is provided, and the handle is foldable with respect to a loading platform. When the handle is folded, the brake lock of the brake means is not released, and the voice output means. Does not emit a warning sound, but when the switch-operated lever is gripped after the handle is set up to enable traveling/steering of the carriage, the brake lock is released and the sound output means outputs a warning sound. The trolley with a voice alarm according to claim 1 or 2, which is in a state of emitting a sound or emitting a warning sound. The voice output unit further includes an output unit that emits a warning sound, and a brake detection unit that detects release of the brake lock and instructs the output unit to emit a warning sound,
The brake detection means is a member that is displaced when the brake lock is released, and is arranged in the vicinity of a member that is not displaced when the handle is folded, so that when the handle is folded, The trolley with a voice alarm according to claim 1 or 2, wherein the brake lock is not released, and the voice output means does not emit a warning sound. The brake means is a member that is displaced with the release of the brake lock, and the brake means includes a lower parallel member extending from the cooperative operation member below the luggage carrier, and the brake lock is provided. The trolley with an audio alarm according to claim 4, wherein the member that is displaced along with it and that is not displaced when folded is at least one of the cooperative operation member and the lower parallel member. The braking means includes a cooperative operation member that transmits the operation of the switch/operation lever, further includes an adjusting mechanism for adjusting a distance between the switch/operation lever and an upper end of the cooperation operation member, and the handle is provided. The trolley with an audio alarm according to any one of claims 1 to 5, wherein, in a folded state, the handle and the switch/operation lever are in contact with each other so that the brake lock cannot be released.