JPH0143613Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fixing device for a movable measuring rack on which measuring instruments are mounted and transported.

When storing a mobile measurement rack with casters and a measuring instrument mounted thereon so that it can move freely to the location where measurements are to be taken, in a predetermined location, there is a risk that the measurement rack will move on its own due to an earthquake, etc. In order to prevent this, conventional methods have been to fix the legs of the measurement rack using fixing devices. Conventional fixators of this type include, for example, as shown in Utility Model Publication No. 55-8689.
It has a pair of left and right fixing bodies arranged and fixed according to the spacing between the left and right legs of the measuring rack, and each fixing body has a U-shaped notch into which the legs of the measuring rack are inserted. , a first lock plate having a U-shaped recess portion for locking a leg inserted into the notch recess is rotatably attached to the fixed body, and the first lock plate is locked with a second lock plate. I was trying to fix it. That is, the notch in the fixed body and the recess in the rotatable first locking plate form a circular space, and the legs are inserted into the space and locked. When the cross-sectional shape of the legs is square, the legs cannot be securely locked, and in this case, special fittings are required to prevent rattling. In addition, it is of course possible to make the U-shaped notch and the recess into a rectangular shape in advance in order to correspond to the rectangular cross-section leg, but in this case, when the leg is inserted or removed, the first lock plate In order to prevent interference between the end of the recess and the leg, the radius of rotation of the first locking plate must be increased, which inevitably increases the size of the fixator.

The present invention was developed in view of the above points, and aims to provide a fixator that allows the leg to be smoothly inserted and removed, is compact, and is especially useful for fixing square-section legs. There is. Embodiments of the present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a plan view showing the internal structure of the fixator according to the present invention with the top cover removed, and FIG. 2 is a side view thereof. The fixator has a pair of left and right fixing bodies, and since both fixing bodies are bilaterally symmetrical, Fig. 1,
In FIG. 2, only the right side fixed body is shown. In the figure, a fixed body 1 has a bottom plate 2, and the bottom plate 2 is fixed to a fixing fitting such as a square pipe attached to a wall or a floor using means such as screws. A longitudinal notch 2a into which the leg of the measuring rack is inserted is formed in the bottom plate 2, and an arc-shaped guide piece 3 is fixed to the right edge of the notch 2a, and the notch 2a of the leg is fixed to the right edge of the notch 2a. This allows for smooth insertion into the space 2a.

On the bottom plate 2, a pair of locking plates 4, 4, which are bilaterally symmetrical to each other, are adjacent to the cutout recess 2a, and are attached to the support shafts 5, 4.
5, it is rotatably attached. The locking plates 4, 4 have U-shaped recesses 4a, 4a,
When the double recesses 4a, 4a are opposed, the double recess 4
A closed rectangular cavity having substantially the same shape as the notch recess 2a is formed above the notch recess 2a at points a and 4a. In addition, pins 6, 6 are fixed to the lower surfaces of the locking plates 4, 4, respectively, and a tension spring 7 is stretched around both the pins 6, 6, so that the recesses 4a, 4a of both the locking plates 4, 4 are mutually connected. A spring force is exerted in the direction of separation. Further, L-shaped notches 4b, 4b are formed at the inner ends of the locking plates 4, 4, and when the two recesses 4a, 4a face each other to form a rectangular space, both L-shaped notches 4b, 4b are formed. 4b is also opposed to form a cavity into which a lock plate 8, which will be described later, is fitted.

Further, support plates 9, 9 are fixed to the bottom plate 2, and a support shaft 10 is fixed to the support plates 9, 9 and extends in the left-right direction, and a lock plate 8 is swingably attached to the support shaft 10. installed. Lock plate 4 of lock plate 8,
The end portion on the 4 side has a shape that is almost the same as the space formed by the L-shaped notches 4b, 4b, and the locking plate 8 is fitted between both L-shaped notches 4b, 4b, and both locking plates are closed. 4,4 can be locked. Also,
A return spring 11 is wound around the support shaft 10 to exert a spring force on the lock plate 8, and urges the ends of the lock plate 8 on the side of the locking plates 4, 4 downward.

Further, an operating member mounting plate 12 is further fixed to the bottom plate 2, and an operating member 13 is rotatably attached to the mounting plate 12 so as to extend in the left-right direction. An actuating plate 14 having an L-shaped cross section is fixed to the operating member 13, and one end of the actuating plate 14 abuts one end of the lock plate 8 from above. Operation member 13
A return spring 15 is wound around the holder, exerting a spring force to rotate the operating member 13 clockwise in FIG. 2, and one end of the operating plate 14 comes into contact with the bottom plate 2 and stops. . Further, the right end of the operating member 13 is bent upward, and a handle (not shown) is provided at the end thereof, and the left end of the operating member 13 can be connected to an operating member of a fixed body on the left side (not shown). ing.

In the above configuration, the lock plate 8 is connected to the L-shaped notch 4.
When the locking plates 4, 4 are not fitted between the locking holes 4b and 4b, the locking plates 4, 4 are rotated by the action of the tension spring 7, as shown by the chain lines in FIG. The front surface of the notch recess 2a is open.
When fixing the legs of the measuring rack, cut the legs into the recesses 2.
When inserted into the notch 2a, the legs come into contact with the ends of the recesses 4a, 4a that protrude into the notch recess 2a, rotating the locking plates 4, 4 against the tension spring 7, and the legs recess 4
a, held within 4a. At this time, lock plate 8
is fitted between the L-shaped notches 4b, 4b by the action of the return spring 11, locking the locking plates 4, 4 in that state, and fixing the legs. In addition, when releasing the legs, when the operating member 13 is rotated counterclockwise in FIG. , 4b is lifted upward to release the lock, and the locking plates 4, 4 are rotated by the action of the tension spring 7, and the legs are released.

In addition, in this embodiment, in order to correspond to the rectangular cross-section leg, the cutout recess 2a of the bottom plate 2 and the recess 4 of the locking plate 4 are
Although the shape of the recess is rectangular, it goes without saying that the shape of the recess is appropriately determined depending on the cross-sectional shape of the leg to be locked.

As explained above, according to the present invention, the leg is held and fixed from both sides by a pair of locking plates that open and close, so the leg can be taken in and out smoothly, and the fixator can be made smaller. Therefore, it is possible to provide a fixator for a rectangular cross-section leg without increasing its size.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the internal structure of the fixed body of the present invention with the top cover removed, and FIG. 2 is a side view thereof. DESCRIPTION OF SYMBOLS 1... Fixed body, 2... Bottom plate, 2a... Notch recess, 4... Locking plate, 4a... Recess, 4b... Notch, 7... Tension spring, 8... Lock plate, 11 ,1
5... Return spring, 13... Operating member, 14... Operating plate.

Claims (1)

[Scope of utility model registration request] It has a pair of left and right fixed bodies, each of which has a notch into which the leg of the measuring frame is inserted, and a pair of locking plates adjacent to the notch to rotate. The locking plates are provided with recesses at positions facing each other, and the cutouts are provided with closed spaces for locking the legs in both recesses when the locking plates face each other. A spring biases the locking plate in the direction of opening, and a notch is provided at the inner end of the locking plate at opposing positions, and the locking plate is configured to fit between the two notches. A lock plate that is removably inserted to lock the lock plate in a closed state is swingably mounted and biased in one direction by a spring, and an operating member that engages with the lock plate and swings the lock plate. A movable measuring frame fixing device characterized by being provided with.