JPS5913815Y2 - Device to prevent cages from falling in laboratory animal breeding racks - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing cages from falling on racks for laboratory animals, which prevents cages on the shelves from falling in the event of an earthquake.

Generally, when raising a large number of experimental animals such as rats and mice, each animal is housed in a cage, and the cages are arranged on breeding racks.

However, this cage is simply placed on a shelf made of flat plates or lattice bars, and therefore, when the main body of the breeding rack shakes due to an earthquake, the cage starts to rub against the shelf, and as a result, There is a risk of falling off the shelf.

In this case, if the cage falls to the floor, the lid will fly off and the experimental animals will escape, and various experimental animals will get mixed up, making post-treatment difficult.

This animal experiment is particularly troublesome if it involves bacterial administration.

In view of the above-mentioned circumstances, the present invention focuses on the fact that it would be of great benefit to those skilled in the art if a breeding shelf equipped with a device that would prevent the cages from falling even in the event of an earthquake and would not cause any hindrance to breeding operations would be of great benefit to those skilled in the art. The present invention was completed.

Hereinafter, the present invention will be described with reference to drawings of embodiments.

Reference numeral 1 denotes a breeding rack main body having an appropriate number of stages (number of shelves), and pivot holes 2, 2 are provided in opposite shelf legs 1a, 1a, which are the front edges of each shelf 1b located on both sides of the front of the breeding rack main body 1. It will be set up.

Reference numeral 3 denotes a swinging stop bar with crank-shaped bent portions 4 formed at both ends;
The horizontal upper end hooked shaft portions 4', 4' of 4 are inserted into the pivot holes 2, 2, respectively, so that the stop bar 3 is placed in a swingable suspended state.

In this case, the installation position of the stop rod 3 is arranged near the shelf surface line of the persimmons 1b, so that the lower edge 5a of the cage 5 placed on the shelf 1b is at least in contact with the persimmons 1b when it is suspended. It will be done.

Note that 4a' is a stopper disposed at the end of the upper hooked shaft portion 4'.

To explain this effect, first, experimental animals (not shown)
When placing the cage 5 containing the cage on the shelf 1b, the cage 5 can be placed on the shelf 1b by simply riding on the stop bar 3 extending from the bottom of each column 1b and pushing it into the inner part of the shelf 1b.

That is, the lower edge 5a of the cage 5 is set to be located inside the stop bar 3.

After that, for example, an automatic water supply valve 8 attached to the tip of a water supply hose 9 pulled out from a water supply pipe 10 piped to the back of each column 1b.
is made to face into the lattice mesh of the lattice lid portion 5' of the cage 5.

Here, if an earthquake occurs and the breeding rack main body 1 begins to shake (the breeding rack main body itself is fixed to the side wall or ceiling surface with appropriate fasteners (not shown))
, the cage 5 placed on each shelf 1b slides toward the opening 1C, which is the front edge of the shelf 1b, depending on the forward inclination of the breeding shelf main body 1, but the lower edge of the cage 5 Part 5a
Since the stop bar 3 lies at the front position of the stop bar 3, the lower edge 5a comes into contact with the stop bar 3, thereby preventing forward sliding.

In this case, the stop rod 3 itself has a pendulum-type swinging structure with the center of gravity lowered with the pivoting portions at both ends located upward, so that it is automatically pushed open at an appropriate angle in accordance with the inclination of the breeding rack body 1.

In other words, the stop bar 3 rotates around the hooked upper end shafts 4', 4' (see Fig. 3), and the regulating position of the stop bar 3 relative to the cage 5 is inevitably aligned with the lower edge 5a. Naru 1
This results in a transition from the position to the 1' position, which is the middle torso side.
This serves as a more reliable stopper and prevents the cage 5 from falling.

Of course, the stop bar 3 also follows the return movement of the cage 5 when it is tilted backward.

In addition, even if this cage 5 rubs toward the rear (inner part) of the shelf 1b, the fixing rod 6 is preliminarily passed between the openings of the rear shelf legs 1a' and la' of the shelf 1b, so that the cage 5 does not move rearward. There is no rubbing off.

The shaft bearing means for this stop bar 3 includes not only a structure in which a pivot hole 2 is provided directly in the shelf leg 1a as shown in FIG. ′ directly welded or
Either attach a band-type locking device 2'' to the shelf leg 1a and arrange a pivot hole 2 therein as shown in the opening in Figure 4, or attach a bearing member to the band-type locking device 2'' as shown in Figure 4. Even if 2' is provided in a protruding manner, the same effect can be obtained.

Further, if necessary, the crank-shaped newly curved portion 4 of the stop bar 3 can be constructed to be extendable and retractable using a screw 4a as shown in FIG. 5, so that the swing radius can be adjusted.

As mentioned above, the cage drop prevention device of the present invention is extremely simple, consisting of a single shaft with crank-shaped bent portions at both ends, and the upper end of which is hooked and pivoted to the shelf legs. Because of its structure, it has a simple and reliable stopper function, has a good appearance, and can be easily attached to ready-made breeding racks.

Moreover, since this stop bar is placed at the lower edge of the cage near the shelf surface line, it does not interfere with regular rearing operations at all.

For example, if you want to move the cage slightly forward and look inside,
Even if the stop bar is located at the front, the arc drawn by the stop bar provides practical effects such as being able to move freely.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the operating state, FIG. 2 is a front view of the stop bar, FIG. 3 is an explanatory diagram showing the operating state, and FIG. C is a perspective view of another embodiment of the shaft and the seat, and FIG. 5 is a front view of another embodiment of the stop bar. DESCRIPTION OF SYMBOLS 1... Breeding shelf main body, 1a... Shelf leg part, 1b... Shelf, 2... Pivot hole, 3... Rocking type stop bar, 4... Crank-shaped bending part, 4'... Upper end hooked shaft part, 5... Cage, 5a... Lower edge part.

Claims (1)

[Scope of utility model registration request] At the lower part of the front edge of each column of the main body of the breeding rack, which is located near the shelf surface line, there is a swing-type stop bar with a crank-shaped bent part formed at both ends, and a hooked shaft at the upper end of this crank-shaped bent part. A fall prevention device for a cage in a breeding rack for laboratory animals, which comprises a stop rod pivotally attached to a shelf leg and a stop rod swingably suspended.