JP2002136370A - Lock mechanism in bedside table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock mechanism in a bedside table, which can be locked so as not to move when used in the bedside table and is easy to operate. SOLUTION: The vehicle has a grounding member 16 mounted on both caster frames 11b so as to be vertically movable, and an operation means 17 for vertically moving the grounding member 16. The cam member 24 is operated by the operation pedal 25 via the interlocking shaft 22.
Is rotated, and the distal end side of the cam member 24 is
The first valley v1 is brought down to the valley v1 and pushes the ground member 16 down toward the floor against the urging force of the coil spring 20 interposed in the stepped bolt 19 serving as the urging means.
To the second valley v2 to keep the bedside table fixed so as not to move.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism for a bedside table, which can be locked so as not to move when used, and which is easy to operate.

[0002]

2. Description of the Related Art Conventionally, there is a bedside table 1 which is brought to a user's bottom from the side of a bed and used as a table for meals or the like (see FIG. 4). In the bedside table 1, when used, the lock mechanism (not shown) of the casters 3 on the legs 2 is locked by operating levers 4 provided on the casters 3 so that the bedside table 1 does not move. I've been.

[0003]

However, the lock mechanism of the caster 3 only locks the wheel C,
Since it does not restrict the rotation around the caster axis A,
The bedside table 1 easily moves. In addition, since the casters 3 are locked one by one, it is very troublesome. The present invention has been proposed in order to improve such a problem, and a lock mechanism in a bedside table that can be locked so as not to move when used in a bedside table and is easy to operate. The purpose is to provide.

[0004]

In order to solve the above-mentioned problems, according to the present invention, there is provided a leg provided with a caster according to the first aspect, a column standing upright on the leg, and a table supported by the column. A bedside table having a plate and
The leg portion is provided with a vertically movable grounding member, and operating means for vertically moving the grounding member, and the grounding member is pressed down toward the floor surface by the operating means to ground the grounding member to the floor surface. Disclosed is a structure provided with a holding means for holding the caster floating from the floor surface. Further, in the present invention, in claim 2, the leg portion has a long frame and caster frames provided with casters provided at both ends of the long frame. The member is mounted so as to be able to move up and down via biasing means, and the operating means is provided between the two caster frames, an interlocking shaft inserted so as to be interposed between the grounding member and the caster frame, and the interlocking shaft, A cam member attached so as to contact the ground member, and an operation pedal for rotating the interlock shaft to one end of the interlock shaft to push down the ground member to the floor surface via the cam member, The holding means discloses a structure having a groove for maintaining a state in which the tip of the cam member abuts on the ground member and the ground member is pressed down.

According to the first aspect, in use, the grounding member is pressed down toward the floor by the operating means,
The grounding member can be grounded on the floor, and the casters can be held in a state of floating from the floor. The grounding member has a larger grounding area than the casters, and does not rotate around the caster shaft unlike a caster, so that it can be stably supported.

According to the second aspect, the caster is operated by operating the operation pedal beside the caster frame in the leg portion to push down the grounding member against the urging means via the interlocking shaft and the cam member, thereby making the caster ground. And the tip of the cam member abuts the groove of the grounding member to keep the grounding member pressed down, and the bedside table can be supported by the grounding member so as not to move.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a lock mechanism for a bedside table according to the present invention will be described with reference to the accompanying drawings, showing one embodiment. FIG.
A lock mechanism 12 is provided on the leg 11 of the bedside table 10 shown in FIG. This bedside table 10
Has a structure including a leg 11 provided with a caster (described later), a column 13 erected on the leg 11, and a table plate 14 supported by the column 13. The leg 11 is
A long frame 11a and a long frame 11a provided at both ends,
It has caster frames 11b, 11b, and the column 13 is erected on one of the caster frames 11b, 11b. Although not shown, the strut 13 has a structure capable of adjusting expansion and contraction by having an expansion and contraction adjustment mechanism. Also,
The table plate 14 is formed in an elongated shape, and a portion near one end is attached to the top of the column 13 so as to be directed parallel to the long frame 11a of the leg. With such a configuration, the leg 1
By inserting 1, the table board 14 is brought above the center of the bottom where the user is located.

The caster frame 11b of the leg 11
Reference numeral 11b denotes a substantially crescent-shaped frame member as shown in FIG. 2, and its longitudinal direction is orthogonal to the long frame 11a. Casters 15 are provided near both ends of the lower end surfaces of the caster frames 11b, 11b.

The lock mechanism 12 includes a ground member 1 movably mounted on the caster frames 11b, 11b.
6 and operating means 17 for vertically moving the grounding member 16 (see FIG. 2). The grounding member 1
Reference numeral 6 denotes a caster frame 11b, 1 which is formed of a square bar member having a thin portion except for both ends, and through which stepped bolts 19 serving as urging means are inserted into insertion holes 18, 18 formed at both ends.
1b. At this time, a coil spring 20 is interposed from the head of the stepped bolt 19 to the shaft portion, and when the stepped bolt 19 is fixed to the inner side surface of the caster frames 11b, 11b, the insertion holes 18, inside the grounding member 16 are formed. 1
It comes into contact with the 8 peripheral edges. Also, pads 21 as friction members that are in contact with the floor surface are provided on the lower surfaces on both ends of the ground member 16. This pad 21
For example, it can be constituted by a urethane material. Further, an operating means 1 is provided between the caster frames 11b.
7 is inserted through the interlocking shaft 22. In this case, the interlocking shaft 22 is connected to the caster frames 11 b, 11 b and the ground member 16.
A cam member 24 is mounted at a position corresponding to the groove 23 serving as a holding means, which is formed at the center of the grounding member 16 mounted on the caster frames 11b, 11b. The operation means 17 has an operation pedal 25 at one end of the interlocking shaft 22 for rotating the cam member 24 via the interlocking shaft 22. The inner bottom surface of the groove 23 formed at the center of the grounding member 16 is formed with a step having a W-shaped cross section, and has a first valley v1 and a second valley v2 at which the tip of the cam member 24 just contacts. ing. That is, when the cam member 24 is rotated by the operation pedal 25 via the interlocking shaft 22, the tip side of the cam member 24 initially brings the first valley v <b> 1 in the groove 23 to bias the ground member 16. By pressing down against the floor surface against the urging force of the coil spring 20 interposed in the stepped bolt 19 as a means and making it contact with the floor surface, it is brought from the first valley portion v1 to the second valley portion v2. , The bedside table is kept stationary so as not to move.

In the lock mechanism 12 of the bedside table 10 configured as described above, first, the table plate 1 is placed at the height of the bottom of the bed.
By adjusting the support portion 13 to match the height of 4, and inserting the leg portion 11 from the bottom side on the bottom,
The table board 14 is provided on the bottom where the user is located, and can be used as a dining table or a treatment table in addition to the accessory storage. At this time, when the operation pedal 25 of the lock mechanism 12 arranged on the leg 11 is operated to rotate the cam member 24 via the interlocking shaft 22, the cam member 2
4 has a first valley v in the groove 23 of the grounding member 16.
1, a coil spring 2 which abuts toward the second valley v2 and is interposed in a stepped bolt 19 as an urging means.
In response to the urging force of 0, the grounding member 16 is pushed down toward the floor surface and grounded on the floor surface via the pad 21, thereby raising the bedside table 10 together with the caster frames 11b, 11b. Floats, the second
Since the tip side of the cam member 24 is provided at the valley v2, the bedside table 10 can be maintained in a fixed state so as not to move.

As described above, the operating means 1 of the lock mechanism 12
7 can operate the grounding members 16 of both caster frames 11b, 11b in an interlocking manner by simply operating the operation pedal 25, so that the operability is remarkably improved, and an unusually superior bedside is used. Table 1
It can be said that it is zero.

[0012]

According to the present invention, it is possible to provide a bedside table in which the bedside table can be locked so that the bedside table does not move when used, and the operation is easy.

[0013]

[Brief description of the drawings]

FIG. 1 is an external perspective view of a bedside table including a lock mechanism according to the present invention.

FIG. 2 is an enlarged exploded perspective view for explaining a configuration of a lock mechanism according to the present invention.

FIG. 3 is an explanatory cross-sectional view of a main part, for explaining the operation of the lock mechanism shown in FIG. 2;

FIG. 4 is an explanatory perspective view for explaining a lock means of a current bedside table.

[Explanation of symbols]

 Reference Signs List 1 bedside table 2 leg 3 caster 4 operating lever C wheel A caster shaft 10 bedside table 11 leg 11a long frame 11b caster frame 12 lock mechanism 13 support 14 table plate 15 caster 16 grounding member 17 operating means 18 insertion Hole 19 Stepped bolt 20 Coil spring 21 Pad 22 Interlocking shaft 23 Groove 24 Cam member 25 Operation pedal v1 First valley v2 Second valley

Claims (2)

[Claims] 1. A bedside table comprising a leg provided with a caster, a column standing upright on the leg, and a table plate supported by the column, wherein the leg has a vertically movable grounding member. Operating means for vertically moving the grounding member, wherein the grounding member is pressed down toward the floor surface by the operating means so that the grounding member is grounded on the floor surface and the caster is floated from the floor surface. A lock mechanism for a bedside table, comprising: holding means for holding. 2. The leg portion has a long frame and caster frames provided on both ends of the long frame, on which casters are mounted. The grounding member is biased to both the caster frames. The operation means is provided between the two caster frames, and an interlocking shaft inserted between the two caster frames so as to be interposed between the grounding member and the caster frames. A cam member attached so as to be in contact therewith, and an operation pedal for rotating the interlocking shaft to one end side of the interlocking shaft to push down the grounding member to the floor surface via the cam member; and the holding means, The lock mechanism for a bedside table according to claim 1, further comprising a groove for maintaining a state in which the tip of the cam member comes into contact with the grounding member and the grounding member is pressed down.