JP3560236B2 - Stop and hold mechanism for furniture with casters - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
In the present invention, in a fixture having casters, for example, a bed or the like (normal bed, hospital bed, ICU bed, transfer bed), a transport cart, or the like, the bed or the like is stopped so as not to move by pressing against the floor surface. The present invention relates to a stop holding mechanism for a fixture having casters, which is configured to be held.
[0002]
[Prior art]
In recent years, the number of equipments provided in beds and the like has increased, resulting in an increase in weight. From the viewpoint of ease of moving and moving, casters for moving legs are indispensable.
Such a caster is usually provided with a lock mechanism, and when the bed is transported to a predetermined position, the caster is locked by depressing a pedal for operating the lock mechanism, and the bed is fixed so as not to move. I have to.
Recently, a bed equipped with a mechanism for operating a caster lock mechanism in a bed has been commercialized. According to such a mechanism, since the lock operation of the casters can be performed collectively, operability can be improved without labor.
[0003]
[Problems to be solved by the invention]
However, in the collective lock operation means, since each caster provided with a lock mechanism is interlock-locked by an interlocking mechanism, it is somewhat complicated mechanically, and in terms of arranging the interlocking mechanism, The height around the base frame increases, which is unsuitable for low-floor beds.
In addition, the unit cost of the casters is high, which causes a cost increase.
The present invention has been proposed in view of the above, and in a bed or the like having casters or a transport cart or the like, a caster which is held in a stopped state so as not to move by pressing against a floor surface. It is an object of the present invention to provide a stop holding mechanism in a fixture having the above.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, according to the present invention, in claim 1, a swing arm base end side is swingably attached to a base frame of a fixture provided with casters, and a floor is attached to a swing arm tip side. A grounding member for grounding the surface, wherein the swinging arm is provided with biasing means for biasing the grounding member at the tip of the swinging arm so as to be detached from the floor surface by the biasing means; The swinging means is provided between the middle portion of the base frame and the base frame, and an operation pedal for operating the swinging means is provided. By depressing the operation pedal in one direction, the swinging means is provided. The rocking arm tip side is pushed down in conjunction with the rocking arm, and the grounding member on the rocking arm tip side is grounded to the floor surface, and is held in a grounded state, while the operation pedal is depressed in the opposite direction, whereby the rocking operation is performed. The grounding member on the tip of the moving arm The biasing force of the energizing means as an auxiliary, proposes a stop-holding mechanism in fixtures having casters where the structure is detached from the floor.
According to the present invention, the swing arm, the grounding member, the swing operation means, and the operation pedal for operating the swing operation means are provided at least at positions opposed to each other in the short direction of the base frame. The rocking means are connected to each other so as to be interlocked with each other, and by operating any one of the operation pedals, all the rocking means are linked to ground the ground member to the floor surface. The present invention proposes a stop and hold mechanism for a fixture having casters configured to separate the ground member from the floor surface with the aid of the urging force of an urging means while holding the ground member in the ground state.
Further, in the present invention, in claim 3, the swinging movement means includes a first link rotatably attached to an intermediate portion of the swinging arm and a second link flexibly connected to the first link. The second link is fixed to an interlocking rod inserted through both long frames on both ends of the short frame of the base frame, and the interlocking rod is rotated at both ends of the interlocking rod. The first link and the second link form a predetermined obtuse angle in a state where the ground member at the tip of the swing arm is separated from the floor surface, while the first link and the second link make contact with the floor surface. When the first link and the second link are in contact with each other, the first link and the second link are set to form a straight line, and an operating pedal is operated to extend and bend the first and second links, thereby swinging the swing arm. To move the grounding member at the tip of the swing arm to the ground. And the grounding member is separated from the floor surface with the aid of the urging force of the urging means, and the base frame is provided with a regulating member for regulating the operating range of the second link. We propose a stop and hold mechanism for furniture with casters.
[0005]
According to the first aspect, simply by depressing the operation pedal, the swinging movement means is interlocked to push down the tip side of the swinging arm, and the grounding member on the tip side of the swinging arm is grounded to the floor, and the grounding state is set. And a series of operations for detaching the grounding member on the tip side of the swing arm from the floor surface with the aid of the urging force of the urging means .
[0006]
According to claim 2, by operating any one of the operation pedals , all the swinging motion means are interlocked, and the grounding member is grounded on the floor surface and held in a grounded state, while the grounding member is With the aid of the urging force of the urging means, it can be separated from the floor surface .
[0007]
According to the third aspect, by operating the operation pedal , the second link and the first link are extended and bent within the range restricted by the restricting member , so that the rocking arm is rocked. While the grounding member at the tip is grounded on the floor surface and held in a grounded state, the grounding member can be separated from the floor surface with the aid of the urging force of the urging means .
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a stop holding mechanism in a fixture having casters according to the present invention will be described below with reference to the accompanying drawings, taking an embodiment used for a bed.
The bed 1 shown in FIGS. 1 and 2 is a kind of a gatch bed (a bed having a function of raising and lowering a bottom). The bed 1 is attached to a base frame 3 on which a caster 2 is arranged via a lifting leg (not shown). The frame 4 and the bottom 5 are supported. The main frame 4 is equipped with a well-known leg raising mechanism (not shown) and a gatch mechanism (not shown) for raising and lowering the bottom 5 and performing a gatch operation (back raising operation, knee raising operation).
[0009]
The base frame 3 has a rectangular frame shape as a whole including a long frame 3a and a short frame 3b, and the casters 2 are mounted on both ends of the long frame 3a. The casters 2 have a known structure without a lock mechanism.
A stop holding mechanism 6 for maintaining the base frame 3, ie, the bed 1, in a stopped state is provided near the short frame 3b on the bed head side of the base frame 3.
[0010]
Therefore, the stop holding mechanism 6 will be described in detail below.
That is, as shown in FIGS. 3 and 4, the stop holding mechanism 6 includes swing arms 7, 7 whose ends are swingably attached to the long frame 3a near both ends of the short frame 3b. Grounding members 8, 8 fixed to the tips of the arms 7, 7 for grounding on the floor surface F are provided. In this case, the rocking arms 7, 7 urge the distal ends of the rocking arms 7, 7 by a spring member 9 in a direction in which the ground members 8, 8 at the tips of the rocking arms 7, 7 are lifted from the floor surface F. It is provided in the state where it was done.
The oscillating arms 7, 7 press the oscillating arms 7, 7 against the ground surface 8, 8 at the tip of the oscillating arms 7, 7 by means of the oscillating operation means 10 or separate them. .
[0011]
The grounding member 8 has a disk shape, and a friction member M such as urethane is arranged on the grounding surface.
[0012]
The swinging movement means 10 includes first links 11, 11 rotatably attached to intermediate portions of the swing arms 7, 7, and second links 12, which are flexibly connected to the first links 11, 11. The second links 12, 12 are fixed to an interlocking rod 13 that is inserted through the long frames 3a, 3a on both ends of the short frame 3b. Operation pedals 14, 14 for rotating the interlocking rod 13 are mounted on both ends of the interlocking rod 13.
As shown in FIG. 5, the first link 11, 11 and the second link 12, 12 are at a predetermined angle (in a state where the ground members 8, 8 at the tips of the swing arms 7, 7 are separated from the floor surface F). Obtuse angle).
Also, as shown in FIG. 6, when the grounding members 8, 8 are brought into contact with the floor surface F, the first links 11, 11 and the second links 12, 12 are set so as to form a straight line. I have.
The operation pedal 14 has a strip-shaped stepping portion 14a and an interlocking arm 14b protruding in the middle of the stepping portion 14a. The interlocking rod 13 is fixed to the tip of the interlocking arm 14b.
The longitudinal frame 3 a of the base frame 3 is provided with regulating members 15, 15 for regulating the operating range of the second link 12 in the swinging motion means 10, that is, the operating range of the operation pedal 14 (FIG. 3). reference).
[0013]
The stop holding mechanism in the furniture having the casters according to the present invention is configured as described above. Next, the operation thereof will be described.
Normally, the ground members 8, 8 at the tips of the swing arms 7, 7 in the stop holding mechanism 6 are held by the spring members 9 in a state of floating above the floor F (see FIGS. 1 and 5). In this state, since the bed 1 uses the casters 2 having no lock mechanism, the bed 1 can be freely moved.
[0014]
Here, when the stepping portion 14a of one of the operation pedals 14 is depressed to prevent the bed 1 from moving at the installation location, the interlocking arm 14b is displaced, and the first link 11 is moved via the interlocking rod 13. And the second link 12 is interlockingly displaced.
In this case, the first and second links 11 and 12 are displaced from the state bent at a predetermined angle so as to be linear. As a result, the tip side of the swing arm 7 is pushed down, and the grounding member 8 is grounded on the floor F.
When the grounding member 8 is grounded, the first and second links 11 and 12 are substantially in a straight line, and the grounding member 8 is pressed against the floor F by the toggle action with the maximum pressing force ( See FIG. 6).
[0015]
Further, by continuing the stepping operation of the stepping portion 14a of the operation pedal 14, the stepping portion 14a is further displaced, and the first link 11 and the second link 12 are interlockingly displaced via the interlocking rod 13, so that the second When the link 12 contacts the regulating member 15, the operation pedal 14 reaches the operable limit position (see FIG. 7).
In this state, the first and second links 11 and 12 are bent from the initial bent state to the opposite side. In this case, although the grounding member 8 is in pressure contact with the floor surface F, it is smaller than the pressure contact force of the linear first and second links 11 and 12 shown in FIG. For this reason, the grounding member 8 is held in a state of being pressed against the floor surface F, and the stop holding mechanism 6 does not return to the original state even if the operation of the operation pedal 14 is stopped.
[0016]
Then, in order to release the restrained state of the bed 1 by the stop holding mechanism 6, the stepping portion 14a of the operation pedal 14 is depressed in reverse, and after the first and second links 11, 12 have moved over the straight state. If the operation is performed until the original arm is displaced to the original bending side, it can be returned to the released state shown in FIG. 5 by the assisting force of the spring member 9 at the end side of the swing arm 7.
If the stepping portion 14a of one operation pedal 14 is depressed, the opposing stop holding mechanism 6 provided via the interlocking rod 13 can also be interlocked, and only one operation is required, and operability is good. .
[0017]
As described above, the stop holding mechanism in the furniture having the casters according to the present invention has been shown and described in one embodiment. However, the stop holding mechanism 6 is not limited to the bed head side of the base frame 3 as shown in FIG. Also provided on the bed foot side, the interlocking rods 13, 13 of the stop holding mechanism 6 on the bed head side and the bed foot side are connected by an interlocking mechanism composed of protruding arms 16, 16 and an interlocking rod 17, and all The stop holding mechanism 6 may be linked.
Further, it is needless to say that the present invention can be applied to furniture such as hospital equipment and furniture having other casters.
[0018]
【The invention's effect】
As described above, according to the present invention,
1. For example, a stop holding mechanism suitable for a low-floor bed can be provided.
2. A caster without a lock mechanism may be used, and the cost can be reduced.
[0019]
[Brief description of the drawings]
FIG. 1 is an overall side view showing an example of a bed using a stop holding mechanism in a fixture having casters according to the present invention.
FIG. 2 is a plan view of the bed shown in FIG.
FIG. 3 is an enlarged plan view of a main part of the bed stop holding mechanism shown in FIG. 1;
FIG. 4 is an enlarged side view of a main part of the bed stop / hold mechanism shown in FIG. 1;
FIG. 5 is an operation side explanatory view of the bed stop holding mechanism shown in FIG. 1;
FIG. 6 is an operation side explanatory view of the bed stop / hold mechanism shown in FIG. 1;
FIG. 7 is an operation side explanatory view of the bed stop / hold mechanism shown in FIG. 1;
FIG. 8 is an overall side view showing another example of a bed using a stop holding mechanism in a fixture having casters according to the present invention.
[Explanation of symbols]
Reference Signs List 1 bed 2 caster 3 base frame 3a long frame 3b short frame 4 main frame 5 bottom 6 stop holding mechanism 7 swing arm 8 ground member 9 spring member 10 swing operation means 11 first link 12 second link 13 interlocking rod 14 Operation pedal 14a Depressed portion 14b Interlocking arm 15 Restriction member 16 Protruding arm 17 Interlocking rod

Claims (3)

A base member of a fixture provided with casters is attached to a base frame so that the base end of the swing arm is swingable, and a grounding member is provided on the tip end side of the swing arm to ground the floor, and the swing arm is provided with an urging means. The grounding member at the tip of the swinging arm is biased by the biasing means so as to be detached from the floor surface, and the swinging movement means is provided between an intermediate portion of the swinging arm and the base frame. By providing an operation pedal for operating the operation moving means, and by depressing the operation pedal in one direction, the swinging operation means is interlocked to push down the tip of the rocking arm, and While the grounding member is grounded on the floor surface and held in the grounded state, the operation pedal is depressed in the opposite direction to operate the grounding member on the tip side of the rocking arm, with the urging force of the urging means being assisted. , this was configured to be detached from the floor Stop-holding mechanism in fixtures having a caster characterized by. A swing arm, a grounding member, a swing operation means, and an operation pedal for operating the swing operation means are provided at least at positions opposed to each other in the short direction of the base frame, and the swing operation means is provided. By operably connecting to each other and operating any one of the operation pedals , all the swinging operation means are interlocked, and the grounding member is grounded on the floor surface and held in a grounded state, The stop holding mechanism for a fixture having casters according to claim 1 , wherein the grounding member is configured to be separated from the floor surface with the aid of the urging force of the urging means . The swinging movement means has a first link rotatably attached to an intermediate portion of the swing arm, and a second link flexibly connected to the first link, and the second link includes a base portion. An operation pedal for rotating the interlocking rod is attached to both ends of the interlocking rod, and the operation pedal is fixed to the interlocking rod inserted through both long frames on both ends of the short frame of the frame. The link and the second link form a predetermined obtuse angle in a state where the ground member at the tip of the swinging arm is separated from the floor, and when the ground member abuts on the floor, The second link is set so as to form a straight line, and the operating pedal is operated to extend and bend the first and second links to swing the rocking arm and to contact the grounding member at the tip of the rocking arm. The ground is grounded on the floor surface, and the ground is maintained. 3. The structure according to claim 1, wherein the material is detached from the floor surface with the aid of the urging force of the urging means, and the base frame is provided with a regulating member for regulating an operation range of the second link. A stop holding mechanism in a fixture having the caster according to the above.

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