JPH09299413A - Side fence for bed or the like having height adjusting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable switching of a side fence to a proper height state according to using situation of a user. SOLUTION: A second pipe 35b is gripped, lifted and rotated from a folded state between lateral pipes 27a and 27b under the energization of a spring member and a pin member 37 on the other end side of a first pipe 35a is retained on a cut 38h directed in the horizontal direction at a receiving pipe 34b of one receiving member 34 to hold an auxiliary fence 35 horizontally. On the other hand, the retaining state between the cut 38h and the pin member 37 at the receiving pipe 34b is released against an energizing force of the spring member and the second pipe 35b is griped and lifted vertically to retain the pin member 37 by an energizing force of the spring member 36 on the cut 38 (v) at the receiving pipe 34b of the one receiving member 34 thereby holding the auxiliary fence 35 vertically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed, such as an ICU bed used in an intensive care unit (ICU room) of a hospital, in which the side fences are in an appropriate height according to the usage situation of the user. The present invention relates to a side fence in a bed or the like having a height adjusting function, which can be switched to.

[0002]

2. Description of the Related Art Recently, in a hospital, an intensive care unit (IC
Room U) is an indispensable facility for effectively, safely and reliably treating severely ill patients who must be constantly monitored and patients immediately after surgery. Such IC
In the U room, the ICU bed is a must-have bed and has many functions such as the floor elevating mechanism, floor undulating mechanism, floor inclining mechanism (trendelen bark, rolling mechanism), etc. It has a complicated structure compared to other beds. In addition, in such an ICU bed, the side fence has a rotary retractable type constituted by a pipe frame, and the side fence is vertically placed on the side frame when the patient is lying on the mattress or during transportation. Since it is fixedly supported and can be stored under the side frame during treatment, it does not become an obstacle.

For example, as shown in FIG. 17, this bed 1
Then, the rotary side fence 2 is a four-point link system, has a first stay 3 and a second stay 4, and one end side of these first and second stays 3 and 4 is the bottom of the bed 1. 5 rotatably attached to the mounting portions 8 projecting on both sides of the boards 6 and 7 projecting upward, and the fence portion 9 rotatably attached to the other end side, and the first and second stays 3 and 4 are bottomed. 5 is configured to be pulled up and supported on the bottom 5 together with the fence 9 from below.
The applicant has already commercialized several such beds 1 (ICU beds), but the bottom corresponding to the back has a mechanism for mounting a cassette tray for X-ray photography. . Further, a high-density urethane 40 mm thick core material is used for the mattress so that X-rays can be well transmitted so that the user can take an image while lying on the bed. However, since the mattress made of such a material has a reduced effect of preventing bedsores, recently, mattresses taking measures against bedsores have been used.

[0004]

The bed 1 as described above
In the above, the first and second stays 3 and 4 and the fence portion 9 are moved so as to project outward in the width direction of the bottom 5, and the bottom 5 is moved.
Since the mounting portion 8 which is a structure to be supported above and which is the mounting portion of the first and second stays 3 and 4 is located on the bottom 5, the board 6, 7 above the bottom 5 is treated during the treatment. There is an inconvenience that the bulge interferes with the medical treatment (see FIG. 18). Furthermore, in the bed 1,
When using a mattress in consideration of measures against bedsore, there is a problem that the thickness of the mattress is large and the existing support height of the fence 9 is insufficient. The present invention has been proposed in order to improve such a problem. For example, in a bed such as an ICU bed used in an intensive care unit (ICU room) of a hospital, a side fence is used depending on the usage situation of the user. An object of the present invention is to provide a side fence in a bed or the like having a height adjusting function, which is adapted to be switched to an appropriate height state.

[0005]

In order to solve the above-mentioned problems, the present invention has a structure in which a side fence such as a bed having a floor undulating mechanism is stored below the floor when it is not needed. It has a pillar portion rotatably attached to the frame and a fence portion fixed to the pillar portion. The pillar portion is rotatably and at least vertically fixedly supported on the fence portion, and is in a substantially horizontal state. An auxiliary fence was provided for fixed support. Further, according to the present invention, in a side fence of a bed or the like having a floor undulating mechanism, it is stored below the floor when it is not needed, and is rotatably mounted on the floor lower frame near the head and legs of the bed. The first stay and the second stay have a pair of struts supported from the bottom of the floor so as to be able to rotate and project upward from the floor, and a fence provided on the tip side of these struts. Has a pair of vertical rails in the middle part thereof, and an auxiliary fence is rotatably mounted between the receiving members arranged so as to face each other on the vertical rails. , First
A convex second pipe projecting from the pipe, and the first pipe
A panel for use as a shelf between the pipe and the second pipe, wherein the receiving member is the first of the auxiliary fences.
Having a receiving pipe for fitting and mounting both ends of the pipe,
A notch that is oriented in the vertical direction and the horizontal direction is formed at one end of one of these receiving pipes, and a pin member for engaging with the notch is provided at one end side of the first pipe in the auxiliary fence. The other end side of the first pipe in the auxiliary fence is attached to the receiving pipe of the other receiving member via the spring member while the pin member on the one end side of the first pipe is provided in the one receiving side. The auxiliary fence is held in the horizontal state and the vertical state by selectively engaging the notch of the member with the receiving pipe by the biasing force of the spring member. Further, according to the present invention, in a side fence of a bed or the like having a floor undulating mechanism, it is configured to be stored under the floor when it is not needed, and can be pivoted to the floor lower frame near the head and legs of the bed. Attached 1st stay and 2nd
Pair of stanchions supported from the bottom of the floor by the stays of the pedestal so as to be able to rotatably project above the floor, a fence provided on the tip side of these stanchions, and an auxiliary fence rotatably mounted as part of the fence The fence portion has a lower horizontal pipe integrally formed with the support between a pair of support columns, a vertical bar standing upright in the vicinity of both the supports, and an upper part of the column and an upper part of the vertical bar being integrally connected. And a top pipe, and the auxiliary fence is attached to a receiving member attached so as to face each other between both vertical bars in the fence part, and the auxiliary fence is a linear base pipe and a base part. 1st integrally formed on the pipe with appropriate spacing
And a second bend pipe, and a panel for placing small items on the first and second bend pipes is attached to the lower horizontal pipe of the fence part, and the first and second bends of the auxiliary fence. In a state where the two-bend pipe is stored so as to face the lower horizontal pipe, a substantially U-shaped guard pipe is provided so as to project at a space position between the first and second bend pipes, and the receiving member is provided. Has a receiving pipe for inserting and mounting both ends of the base pipe of the auxiliary fence, and forming a notch that is oriented in the vertical direction and the horizontal direction at one end of these receiving pipes. A pin member for engaging with the cut is provided at one end side of the base pipe in a radial direction of the base pipe, and the other end side of the base pipe is attached to the receiving pipe of the other receiving member via a spring member. One of the base pipes The pin member on the side in the incision in the receiving pipe of the one receiving member, by locked selectively engaged by the urging force of the spring member, the auxiliary fence horizontal state, and to hold in a vertical state.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, one embodiment of a side fence in a bed or the like having a height adjusting function according to the present invention will be shown and described below with reference to the accompanying drawings. FIG. 1 shows an ICU bed 10 used in the ICU room. The ICU bed 10 includes a carriage 11 and a carriage 11.
And a bed main body 13 supported by an elevating column 12 operated by an elevating mechanism (not shown) incorporated in a cover 11a of the resin integrated mold.

The dolly 11 includes casters 14 for movement,
A steering caster 15 for changing direction is provided at the center. Further, a hydraulic system is adopted for the lifting mechanism of the dolly 11, and the lifting column 12 is operated by the operation pedal 16 to move the bed main body 13 up and down, and the head side and the leg side of the bed main body 13 are moved up and down. The bed 12 is tilted in the longitudinal direction (trendelenberg / reburstrendelenberg) by changing the operating state of the columns 12.

The lifting columns 12 are arranged in pairs on the head side and the leg side of the bed main body 13, respectively, and one end side of which is an undulating lower column 12a connected to a hydraulic drive source in the carriage 11.
And an upper strut 12b which is flexibly connected to the other end of the lower strut 12a and has a body frame 17 of the bed body 13 mounted and supported on the upper end thereof.

The bed body 13 includes a body frame 17
A handle 18 provided on the floor, a floor portion 19 which is adjusted by a gas spring so as to be up and down, and a head frame 20 which is detachably provided on both longitudinal ends of the main body frame 17.
A foot frame 21 and a retractable side fence 22 that covers both sides of the floor 19. The floor 19 is divided into a back floor 19a corresponding to the back, a waist floor 19b corresponding to the waist, and a leg floor 19c corresponding to the legs, and the mattress 2 is provided on the upper surface.
3 is placed.

As shown in FIG. 2, the retractable side fence 22 is rotatably mounted on the main body frame 17 below the floor 19 near the head and legs of the ICU bed 10.
A pair of support pillars 26 supported by the stay 24 and the second stay 25 so as to be capable of pivoting and projecting upward from the floor portion from below the floor portion.
And a long rectangular fence portion 27 composed of a pipe frame on the upper side of these columns 26. The first stay 24
As shown in FIG. 3, the second stay 25 is rotatably bolted to a receiving metal fitting 28 provided near the head side and the leg side of the main body frame 17 (for example, the stepped bolt 2).
9) and is rotatably attached to the column 26 side by a stepped bolt 30. In addition, the first stays 24 connect the first stays 24 to each other via an interlocking shaft 31 so as to be interlocked with each other. Further, one of the columns 26 is provided with a fixing mechanism 32 for fixing the column 26 in a standing position and holding the fence 27 on the side of the floor 19.

As shown in FIG. 4, the fence portion 27 is located between a pair of support columns 26, and upper and lower horizontal pipes 27a and 27b integrally formed with the support column 26, and the horizontal pipe 2 sandwiching the support column 26.
7a and 27b, and a U-shaped grip portion 27c attached to the side surface of the column 26 on the opposite side. Further, a pair of vertical bars 33 is provided between the horizontal pipes 27a and 27b. Then, a receiving member 34 for supporting an auxiliary fence, which will be described later, is attached to the vertical bars 33 so as to face each other, and both ends of the receiving member 34 are provided between the receiving members 34.
A pipe-shaped auxiliary fence 35 is provided so that it can be fitted into and attached to the. The receiving member 34 has a substantially triangular mounting portion 3
4a and a receiving pipe 34b for fitting and mounting both ends of the auxiliary fence 35. The pipe-shaped auxiliary fence 35,
The first pipe 35a has a linear first pipe 35a adapted to be attached to the receiving pipe 34b of the receiving member 34, and a second pipe 35b protruding from the first pipe 35a in a convex shape, that is, a mountain shape. Between 35a and the second pipe 35b,
It has a panel 35c for use as a shelf. The auxiliary fence 35 is attached to the receiving pipe 34b of the receiving member 34 via a spring member 36 on one end side of the first pipe 35a. Further, on the other end side of the first pipe 35a in the auxiliary fence 35, a pin member 37 for engaging with a notch (described later) formed in the end surface of the receiving pipe 34b.
Are provided so as to penetrate in the radial direction and project at both ends.

The mounting portion 34a of the receiving member 34 is screwed along the vertical bar 33 in the vicinity of two corners of the vertical bar 33 near the upper horizontal pipe 27a, and the remaining one corner part. Is attached to the side of the fence 27, and the mounting portion 34a is provided in the vicinity of the remaining one corner.
The auxiliary fence 35 attached to the upper side pipe 27a is prevented from interfering with the upper lateral pipe 27a when the auxiliary fence 35 is fixed by lifting it upward (see FIG. 2). The receiving member 34
On one end of the receiving pipe 34b of No. 3, the pin member 37 provided on the end face on the other end side of the first pipe 35a of the auxiliary fence 35.
Notches 38v and 38h are formed so as to be locked. The notch 38v is oriented vertically, whereas the notch 38h is oriented horizontally.

With this structure, the auxiliary fence 35 holds the second pipe 35b by grasping and rotating the second pipe 35b from the state of being folded between the lateral pipes 27a and 27b under the bias of the spring member 36, and receiving the one receiving member 34. The pin member 37 on the other end side of the first pipe 35a of the auxiliary fence 35 is retained in a horizontal state by cutting the horizontally oriented notch 38h in the pipe 34b (see FIGS. 8 and 5), or the spring. One receiving member is released by releasing the locked state of the notch 38h and the pin member 37 in the receiving pipe 34b against the biasing force of the member 36, grasping the second pipe 35b of the auxiliary fence 35 and lifting it vertically. 34 receiving pipe 34
the pin member 37 to the notch 38v in FIG.
The auxiliary fence 35 is held in the vertical state by being locked by the urging force of 6 (see FIGS. 7 and 6).

The side fence in the bed or the like having the height adjusting function according to the present invention is constructed as described above, and its operation will be described below. The storage-type side fence 22 is in a state of being suspended by the first stay 24 and the second stay 25 on the receiving metal fitting 28 of the main body frame 17 as shown in FIG. Prop 2
The lower side of 6, that is, the state where the connecting portion with the first stay 24 and the second stay 25 is pulled inward, and the upper end side of the support column 26 is from the side end surface of the floor portion 19 to the auxiliary fence 35.
Only the mounting portion 34a of the receiving member 34 of the projection does not interfere with treatment or transfer work of the patient.

Here, when the storage-type fence 22 is lifted from below the floor 19 and raised and held to the side of the floor 19, the U-shaped grip portion 27c of the fence 27 is grasped and lifted. To do. At this time, since the first stays 24 on the head side and the leg side are linked so as to be interlockable,
The grip portion 27c can be lifted by only one side.

After the column 26 is raised to the side of the floor 19, this time, the fixing mechanism 32 provided on one column 26 is operated to move the first stay 24 and the second stay 25 to the column 2.
The support 26 can be held in the standing position by being restrained to the 6 side (see FIG. 10). In this state, unless the height of the fence 27 is too low, the operation of the side fence is completed.

At this time, when the mattress 23 of the floor 19 is of a standard having a relatively large thickness,
When it is considered that the height of the fence portion 27 is insufficient, such as when the back is raised, the auxiliary fence 35 is attached to the horizontal pipe 27a,
The pin member 37 is biased by the spring member 36 to the notch 38v in the receiving pipe 34b of one receiving member 34 which is vertically oriented by lifting and rotating the auxiliary fence 35 from the folded state between 27b. And the auxiliary fence 35 can be held in the vertical state (see FIG. 6).

Further, the auxiliary fence 35 can be fixed in a horizontal state. From the state of being held in the vertical state, the first pipe 3 of the auxiliary fence 35 is resisted against the biasing force of the spring member 36.
5a is pulled toward the spring member 36, and the receiving pipe 34
2b, the engagement state between the notch 38v and the pin member 37 is released, and the pin member 37 of the auxiliary fence 35 is engaged with the notch 38h of the receiving member 34 in the receiving pipe 34b that is oriented in the horizontal direction by the biasing force of the spring member 36. It can be stopped and held in a horizontal state (see FIG. 5), and small articles can be placed on the panel 35c to be used as a small article stand (see FIG. 11). As described above, the height of the fence portion 27 can be switched according to the use situation by a simple operation, so that the usability is greatly improved.

The side fence in a bed or the like having a height adjusting function according to the present invention can also be constructed as follows. In addition, in this embodiment, the same reference numerals are given to the substantially same constituents as the constituents of the retractable side fence 22 constituting the above-mentioned embodiments, and the detailed description thereof will be omitted. And That is, as shown in FIGS. 12 and 13, in the retractable side fence 40 in this case, the auxiliary fence 42 is replaced by the fence portion 41.
It is configured as a part of, and the structure is simplified. The fence part 41 includes a long lower horizontal pipe 41a having a structure integrated with the support column 26 between the pair of support columns 26 and both support columns 26.
It has a vertical bar 41b standing upright in the vicinity, and a top pipe 41c integrally connecting the upper part of the column 26 and the upper part of the vertical bar 41b, and a mounting portion 43a of the receiving member 43 is provided between the both vertical bars 41b. The receiving pipes 43b are attached so as to face each other, and the auxiliary fence 42 is rotatably attached via the spring member 36. In addition, also in the receiving pipe 43b of the receiving member 43, the auxiliary fence 42
Notch 38 to keep the machine horizontal and vertical
h and 38v are formed. In addition, the long linear base pipe 42a of the auxiliary fence 42 is the top pipe 41c.
Apparently, they are arranged in a straight line. The auxiliary fence 42 is formed integrally with a long linear base pipe 42a, which is attached to the receiving pipe 43b of the receiving member 43, at appropriate intervals, with a first curved pipe 42b and a second curved pipe 42b. And a curved pipe 42c. In addition, the auxiliary fence 42, that is, the first and second curved pipes 42b and 42c are provided on the first and second curved pipes 42b and 42c.
Panels 44 and 45 are mounted so that small items can be placed when the device is held horizontally. Further, in the lower horizontal pipe 41a of the fence 41, the first and second curved pipes 42b and 42c of the auxiliary fence 42 are stored so as to face the lower horizontal pipe 41a.
A substantially U-shaped guard pipe 46 is projectingly provided at a position separating the second curved pipe 42c from the second curved pipe 42c. The guard pipe 46 is the first and second curved pipes 4 of the auxiliary fence 42.
2b and 42c are held vertically above, the lower horizontal pipe 41a of the fence 41 and the base pipe 42a of the auxiliary fence 42
It is located in a large space between them so that the user does not feel any visual anxiety due to this space.

With the above-mentioned structure, the structure of the fence portion 41 is simplified, the weight can be reduced accordingly, and the lifting and storing operation becomes easier (FIGS. 14 and 15).
See FIG. 16). Moreover, since the auxiliary fence 42 is configured as a part of the fence portion 41, when the retractable fence 40 is stored under the floor portion 19 (see FIG. 14), the auxiliary fence 42 should project to the side of the floor portion 19. Instead, it can be a side fence that looks more unified. Furthermore, even if the first and second curved pipes 42b and 42c of the auxiliary fence 42 are held vertically above, the lower space is generated in a large space between the lower horizontal pipe 41a of the fence part 41 and the base pipe 42a of the auxiliary fence 42. Positioning the guard pipe 46 in the lateral pipe 41a does not make the user feel visually uneasy due to this space.

[0021]

As described above, according to the present invention, according to the use condition of the bed, that is, the wake-up state of the floor portion, and the height of the fence portion due to the use of the mattress of different standards,
Since the height of the fence is adjusted, the usability can be further improved.

[0022]

[Brief description of drawings]

FIG. 1 is an external side view showing an example of a bed or the like to which a side fence having a height adjusting function according to the present invention is applied.

FIG. 2 is a side view of an essential part showing a functional configuration of a side fence such as a bed shown in FIG.

FIG. 3 is an exploded perspective view showing a mounting structure of a side fence such as the bed shown in FIG.

FIG. 4 is a partially exploded perspective view showing the configuration of a side fence such as the bed shown in FIG. 1.

5 is an explanatory perspective view showing a state in which an auxiliary fence in the side fence such as the bed shown in FIG. 1 is held in a horizontal state.

FIG. 6 is a perspective view of a main part showing a support structure of an auxiliary fence in a side fence such as the bed shown in FIG.

FIG. 7 is a perspective view of a main part showing a support structure of an auxiliary fence in a side fence such as the bed shown in FIG.

8 is a perspective view of a main part showing a supporting structure of an auxiliary fence in the side fence such as the bed shown in FIG. 1. FIG.

FIG. 9 is an explanatory side view of the main parts, showing the side fence according to the present invention in a retracted state.

FIG. 10 is an explanatory side view of the main part, showing the side fence according to the present invention supported in a standing position.

FIG. 11 is a side view showing the main part of the side fence according to the present invention, which is supported in a standing state and the auxiliary fence is held in a horizontal state.

FIG. 12 is an external perspective view showing another example of a bed or the like to which a side fence having a height adjusting function according to the present invention is applied.

FIG. 13 is an exploded perspective view showing another example of the side fence shown in FIG.

FIG. 14 is a side view for explaining a main part of the side fence according to the present invention, which is in a retracted state.

FIG. 15 is an explanatory side view of the main part, showing the side fence according to the present invention supported in an upright position.

FIG. 16 is an explanatory side view of the main part of the side fence according to the present invention, which is supported in a standing position and the auxiliary fence is held in a horizontal state.

FIG. 17 is an external perspective view showing an example of a current ICU bed.

18 is a schematic side view showing the function of a side fence applied to the ICU bed shown in FIG.

[Explanation of symbols]

 10 ICU bed 11 trolley 11a cover 12 lifting column 12a lower column 12b upper column 13 bed body 14 moving caster 15 steering caster 16 operation pedal 17 body frame 18 handle 19 floor 19a back floor 19b waist floor 19c leg floor 20 head frame 21 Foot Frame 22, 40 Retractable Side Fence 23 Mattress 24 First Stay 25 Second Stay 26 Struts 27, 41 Fence 27a, 27b Side Pipe 27c Grip 28 Receiving Metal 29, 30 Stepped Bolt 31 Interlocking Shaft 32 Fixing Mechanism 33 vertical bar 34 receiving member 34a attachment part 34b receiving pipe 35, 42 auxiliary fence 35a first pipe 35b second pipe 35c panel 36 spring member 37 pin member 38v, 38h notch 41a lower horizontal pipe 41b vertical bar 41c Part pipes 42a base pipe 42b first curving pipe 42c second curving pipe 43 receiving member 43a mounting portion 43b receiving the pipe 44, 45 panel 46 guard pipe

Claims (3)

[Claims] 1. A side fence of a bed or the like having a floor undulating mechanism, which is configured to be stored under the floor when it is not needed, and which is rotatably attached to a floor lower frame and a column fixed to the column. A high fence characterized in that it has an installed fence, and this fence is provided with an auxiliary fence that is rotatably and at least vertically fixed and supported, and is also fixed and supported in a substantially horizontal state. Side fences in beds, etc. with a height adjustment function. 2. A side fence of a bed or the like having a floor undulating mechanism, which is configured to be stored under the floor when it is not needed, and is pivotable to a floor lower frame near the head and legs of the bed and the like. The first stay and the second stay that are mounted have a pair of columns supported so as to be capable of pivoting and projecting upward from the floor from below the floor, and a fence provided on the tip side of these columns. There is a pair of vertical rails in the middle of the section, and an auxiliary fence is rotatably mounted between the receiving members arranged so as to face each other on the vertical rails. The auxiliary rail is a linear first pipe. When,
It has a convex second pipe projecting from the first pipe and a panel for use as a shelf between the first pipe and the second pipe, and the receiving member is an auxiliary fence. There is a receiving pipe for inserting and mounting both ends of the first pipe, and a notch that is oriented in the vertical direction and the horizontal direction is formed at one end of these receiving pipes, and one end side of the first pipe in the auxiliary fence is formed. A pin member for engaging with the cut is projected in the radial direction of the first pipe, and the other end side of the first pipe in the auxiliary fence is attached to the receiving pipe of the other receiving member via a spring member. On the other hand, the auxiliary fence is maintained in the horizontal state and the vertical state by selectively locking the pin member on the one end side of the first pipe with the notch in the receiving pipe of the one receiving member by the biasing force of the spring member. To do Side fences in bed or the like having a height adjustment function, characterized in that the. 3. A side fence of a bed or the like having a floor undulating mechanism is configured to be stored below the floor when it is not needed, and can be pivoted to a floor lower frame near the head and legs of the bed or the like. A pair of stanchions supported by the attached first stay and second stay so as to be capable of pivoting and projecting from above the floor to above the floor, a fence provided on the tip side of these stanchions, and a part of the fence And an auxiliary fence that is rotatably mounted as, the fence portion, between the pair of stanchions, a lower horizontal pipe with the stanchions and an integral structure,
It has a vertical bar that stands upright in the vicinity of both columns and a top pipe that integrally connects the upper part of the column and the upper part of the vertical bar, and the auxiliary fences face each other between both vertical bars in the fence part. The auxiliary fence is attached to a receiving member attached to the base pipe, and the auxiliary fence includes a linear base pipe, and a first curved pipe and a second curved pipe integrally formed on the base pipe at appropriate intervals. And a panel for placing small items on these first and second curved pipes, and the first and second curved pipes of the auxiliary fence are opposed to the lower lateral pipe of the fence portion. In the state in which it is stored as described above, it is arranged so that it is approximately U so as to be located in the spatial position of the first and second curved pipes.
A V-shaped guard pipe is projected, and the receiving member has a receiving pipe for inserting and mounting both ends of the base pipe in the auxiliary fence, and one end of these receiving pipes is vertically and horizontally aligned. A directed cut is formed, and a pin member for locking the cut at the one end side of the base pipe in the auxiliary fence is projected in the radial direction of the base pipe, and the other end side of the base pipe is provided with a spring member. While being mounted on the receiving pipe of the other receiving member via the pin member, the pin member on one end side of the base pipe is selectively engaged with the notch in the receiving pipe of the one receiving member by the biasing force of the spring member. Side fences in beds, etc. with a height adjustment function, characterized in that the auxiliary fences are held horizontally and vertically.