JP2002177799A - Laboratory frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laboratory frame which is capable of supporting appliance brackets in a stable state and stably supporting laboratory appliances by means of laboratory appliance supporters attached to these appliance brackets by supporting appliance brackets in a stable state. SOLUTION: This laboratory frame is formed by assembling plural pieces of vertical rods 11 and horizontal rods 12 to a grid form. The vertical rods 11 and the horizontal rods 12 are formed to a square bar form and therefore the appliance brackets used from heretofore are attached to the vertical rods or the horizontal rods in the state that the slopes on both sides of dog-leg-shaped grasping grooves in their grasping sections are aligned to the flat surfaces on both sides continued into arbitrary dihedral angle parts, by which the casual turning of the appliance brackets around the vertical rods or the horizontal rods is surely prevented and consequently according to the laboratory frame described above, the laboratory appliances are exactly and surely disposed on the laboratory table and experiment can be carried out by assembling experimental apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a physics and chemistry frame which is arranged on a laboratory bench and to which an instrument mounting bracket can be stably mounted.

[0002]

2. Description of the Related Art Conventionally, a frame for physics and chemistry has been arranged on a laboratory bench for chemistry and chemistry, and this frame for physics and chemistry combines a columnar vertical rod and a horizontal rod in a lattice shape, The rod and the horizontal rod are assembled by connecting and integrating them at their intersections by using a clamp.

[0003] In detail, the holding fixture A is shown in Figs.
As shown in the figure, a vertical holding portion A1 and a horizontal holding portion A2 each having holding grooves A11 and A21 each having a rectangular shape in cross section are integrated back to back, and these vertical holding portions A1 and horizontal holding portions are integrated.
Screw rods A12 and A22 which can move back and forth toward respective holding grooves A11 and A21 with A2, and this holding metal fitting A is arranged at each intersection of the columnar vertical rod D and the horizontal rod E. Then, the vertical rod D is received in the holding groove A11 of the vertical holding part A1, and the horizontal rod E is received in the holding groove A21 of the horizontal holding part A2.
The vertical rods D and the horizontal rods E are connected and integrated by intersecting the vertical rods D and the horizontal rods E by advancing the screw rods A12 and A22 and abutting the ends thereof on the vertical rods D and the horizontal rods E, thereby forming a lattice-like physical and chemical frame. Is being assembled.

When the laboratory instrument support C is supported by the frame for physics and chemistry assembled in a lattice, the fixture B having the same structure as the above-mentioned clamp B is used to horizontally move the vertical clamp B1. The fixture B is fixed in place on the columnar vertical rod D or the horizontal rod E by the holding groove of one of the holding sections B2 and the screw rod, and the holding groove of the other holding section and the screw. After holding and fixing the experimental device support C with a rod, the experimental device is supported on the tip of the experimental device support C and an experimental device is arranged on an experimental table to perform various experiments. .

However, since the vertical rod D and the horizontal rod E of the conventional physics and chemistry frame are formed in a columnar shape, for example, as shown in FIG. 6 and FIG. In the case where the horizontal rod E is fixed to the horizontal rod E by being clamped by the holding portion B2, the weight of the experimental instrument provided at the distal end of the experimental instrument support C supported by the instrument mounting bracket B is heavy. At the time, or when the horizontal holding portion B2 of the fixture B is insufficiently clamped and fixed to the horizontal rod E, the tip end surface of the clamping screw rod B12 of the fixture B is attached to the physical and chemical frame. By sliding along the convex arc-shaped surface of the horizontal rod E, the fixture B is unexpectedly pivoted and displaced downward about the lateral E, and with the pivot of the fixture B. An experiment arranged at the tip of an experimental instrument support C supported by the instrument mounting bracket B Is damaged relative position changes and the labware between labware mutually displaced position of the tool, or chemicals there is a problem that spilling unexpected taking into the labware.

[0007] As shown in FIGS. 7 and 9, when the fixture B is clamped and fixed to the vertical rod D using the vertical clamping portion B 1, the fixture B is attached to the fixture B. When the supporting device C is inadvertently brought into contact with the experimental device supporting device C and the device mounting bracket B is insufficiently clamped and fixed to the vertical rod D, similarly to the above, the device mounting bracket B is clamped. The distal end surface of the screw rod B12 slides along the convex arc-shaped surface of the vertical rod D of the physics and chemistry frame, and the appliance mounting bracket B unexpectedly rotates in the horizontal direction about the vertical rod D. The position of the experimental instruments disposed at the distal end of the experimental instrument support C supported by the instrument fixture B is displaced with the rotation of the instrument fixture B, and the relative positions between the experimental instruments are changed. However, there was a problem that the test equipment changed and the experimental equipment was damaged.

[0007]

SUMMARY OF THE INVENTION According to the present invention, an instrument mounting bracket can be supported in a stable state, and a laboratory instrument can be stably supported via an experimental instrument supporting tool attached to the instrument mounting bracket. Provide a frame for physics and chemistry.

[0008]

According to a first aspect of the present invention, there is provided a physicochemical frame formed by assembling a plurality of vertical rods and horizontal rods on an experimental table in a grid. The vertical rod and the horizontal rod are formed in a square rod shape.

According to a second aspect of the present invention, there is provided the physical and chemical frame according to the first aspect, wherein the vertical rod and the horizontal rod are formed to have a square cross section, and an intersection thereof is held by a holding metal. , And is fixed.

According to a third aspect of the present invention, in the physics and chemistry frame according to the second aspect, the holding member includes a vertical holding portion having a holding groove having a rectangular cross section and a horizontal holding portion. It is equipped with screw rods that can move forward and backward toward the respective holding grooves of the vertical holding part and the horizontal holding part, and they are at right angles to each other with the arbitrary ridge corner of the vertical rod as the center. The continuous two sides are received in the holding groove of the vertical holding portion of the holding member in a surface contact state, and both surfaces connected at right angles to each other with the arbitrary ridge corner of the horizontal rod as the center of the horizontal holding portion of the holding member. The vertical rod and the horizontal rod are formed by pressing the tip of the screw rod against the arbitrary ridge corner of the vertical rod and the horizontal rod on the opposite side of the arbitrary ridge in the state of being received in the holding groove in a surface contact state. Intersection with Clamping, and wherein the securing.

[0011]

According to the physics and chemistry frame of the present invention, since the vertical and horizontal bars constituting the frame are formed in the shape of a square bar, the inclined surfaces on both sides of the rectangular holding groove of the holding portion of the fixture are described above. With the ridge corner of one of the vertical and horizontal rods of the physics and chemistry frame in the center, and in contact with the flat surfaces connected on both sides in a face contact manner, the holding portion of the instrument mounting bracket is used for physics and chemistry. When pinched and fixed to the vertical rod or horizontal rod of the frame, the inclined surfaces on both sides of the holding groove of the instrument mounting bracket and the flat surface of the vertical rod or horizontal rod of the physics and chemical frame are firmly locked, and It is possible to reliably prevent the instrument mounting bracket from unexpectedly rotating around the vertical or horizontal rod of the physics and chemistry frame, and therefore, the position of the experimental instrument may be unexpectedly displaced or the experimental instrument may be damaged. I will not.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a frame for physics and chemistry according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the physics and chemistry frame 1 includes a plurality of vertical rods 11 and horizontal rods 12 each formed of a square bar having a square cross section and a fixed length, and having arbitrary corner portions 111 and 121. Are oriented in a frontal manner and are combined in a lattice shape, and a clamp A is disposed at an intersection of the vertical rod 11 and the horizontal rod 12 so that the vertical rod 11 and the horizontal It is configured by being connected and integrated via A. It should be noted that at least one of the vertical rods 11 and at least one of the horizontal rods 12 in the physics and chemistry frame 1 need only be square rod-shaped.

The holding member A has a pair of holding portions A1 and A2 having a rectangular shape and having a rectangular cross section bent at right angles and having a fixed length, and a pair of holding portions A1 and A2 having a predetermined length. A screw rod for holding, which can move forward and backward with respect to the holding grooves A11 and A21, respectively.
A12, A22, the holding portion A1, A2 having a rectangular cross section
Indicates that one holding portion A1 is oriented in the horizontal direction and the other holding portion A2
Are vertically fixed to each other with their back facing each other.

[0014] Upright pieces A31, A32 are protruded from one end of the holding portions A1, A2, and the upright pieces A31 are provided.
, A32, screw mounting pieces A41, 42 opposed to the holding grooves A11, A21 are integrally provided at the tip of the screw mounting piece A4.
1 and A42, the center screw holes A411 and A421 are
2, A22 is inserted, and its tip is bent toward the groove bottom of the holding grooves A11, A21 bent in a V shape.

The above-mentioned vertical rod 11 is attached to one of the holding members A, that is, the vertical holding portion A1, and the other, that is, to the vertical holding portion A1.
The vertical rods 11 and the horizontal rods 12 are combined and integrated into a lattice by holding and fixing the horizontal rods 12 to the horizontal holding portion A2, respectively.

Specifically, the vertical holding portion A1 of the holding metal member A
The surfaces 112, 112 of the vertical rod 11 connected at right angles to the inclined surfaces on both sides of the V-shaped holding groove A11 in a plane contact manner,
After being arranged in the received state, the holding screw rod A12 is screwed and pressed against the ridge 111 facing the front of the vertical rod 11 to thereby incline both sides of the rectangular holding groove A11. The vertical rod 11 is clamped between the surface and the clamping screw rod A12, and the vertical rod 11 is stably fixed to the vertical clamping portion A1 of the clamping fixture A.

Similarly, the surfaces 122, 122 of the horizontal rod 12 which are connected at right angles to the inclined surfaces on both sides of the V-shaped holding groove A21 in the horizontal holding portion A2 of the holding metal member A are brought into contact with and received by a surface contact. After being disposed in such a state, the holding screw rod A22 is screwed and pressed against the ridge 121 facing the front of the horizontal rod 12, so that the inclined surfaces on both sides of the U-shaped holding groove A21 are formed. The lateral rod 12 is clamped by the clamping screw rod A22, and the lateral rod 12 is stably fixed to the horizontal clamping portion A2 of the clamping fixture A.

Then, on the experimental table F, two support rods G,
G is arranged in a state of standing upright in the vertical direction with a certain interval in the horizontal direction. The supporting rods G, G are assembled in a lattice shape using the holding metal members A by using the holding metal members A. The vertical rods 11 and the horizontal rods 12 are formed by assembling the vertical rods 11 and the horizontal rods 12 in a lattice by sandwiching and supporting both ends of the horizontal rods 12 in the same manner as described above. The physics and chemistry frame 1 is disposed on the experimental table F in a stable state.

Next, how to use the above-mentioned physical and chemical frame 1 will be described. First, the fixture B is fixed to the vertical rod 11 of the frame 1 for physics and chemistry, and the lab fixture H is supported by the lab fixture C attached to the fixture B. The procedure for arranging the above will be described.

The fixture B has the same structure as the clamp A. Specifically, the fixture B has a pair of clamps B1 and B2 which are bent at a substantially right angle and have a rectangular shape in cross section. It consists of holding screw rods B12 and B22 which can move forward and backward with respect to the holding grooves B11 and B21 of the holding parts B1 and B2, respectively. And are connected back-to-back.

At one end of the holding portions B1 and B2, upright pieces B31 and B32 are protruded, and the upright pieces B31 and B32 are provided.
, B32, screw mounting pieces B41, B42 opposed to the holding grooves B11, B21 are integrally provided at the tip of the screw mounting pieces.
B41, B42 of the center screw holes B411, B421 into the screw screw for pinching
B12 and B22 are inserted, and their ends are directed toward the holding grooves B11 and B21, which are bent in a V shape.

As the experimental device support C, a conventionally used experimental device support C is used. Specifically, for example, a support rod C1 made of a rod having a fixed length and a circular cross section is used. And a device holding portion C2 for holding the experimental device H integrally provided at the tip of the support rod C1.

First, as shown in FIGS. 1 and 3, one of the vertically oriented holding portions of the fixture B is provided.
The above-mentioned vertical rod 11 is provided on both inclined surfaces of the V-shaped holding groove B11 in B1.
After the surfaces 112, 112 connected at right angles to each other are arranged in a state of abutting and receiving in a surface contact manner, the holding screw bar B12 is screwed forward, and the ridge angle facing the side of the vertical rod 11 is formed. By pressing against the portion 113, the vertical rod 11 is sandwiched between the L-shaped holding groove B11 and the holding screw rod B12, and the tool mounting bracket B is stably attached to a desired position of the vertical rod 11. .

Then, the support rod C1 of the experimental instrument support C is clamped and fixed to the other horizontal holding section B2 of the instrument mounting bracket B, and the experimental instrument support C is clamped by the instrument clamp C2. Is stably arranged in a state of protruding forward. By repeating the above procedure, the instrument holding portions C2, C2 of the two experimental instrument supports C, C project on the same vertical rod 11 at a predetermined interval in the vertical direction.

Thereafter, for example, a condenser H1 is clamped and attached to the instrument clamping section C2 of the upper laboratory instrument support C, and the instrument clamping section C2 of the lower laboratory instrument support C is attached.
For example, a round bottom flask H2 is pinched and attached, and the lower end of the condenser H1 is inserted into and fixed to the upper end opening of the round bottom flask H2, thereby disposing the experimental apparatus on the experimental table F.

In this state, as shown in FIG. 3, one of the holding portions B1 of the fixture B and the vertical rod 11 of the physics and chemistry frame 1 are in the shape of a rectangle of the vertical holding portion B1. Since the inclined surfaces on both sides of the holding groove B11 and the flat surfaces 112, 112 on both sides connected to the ridge portion 114 of the vertical rod 11 are in a locked state, a hand or the like comes into contact with the experimental instruments H1, H2. Even in such a case, the fixture B does not unexpectedly rotate around the vertical rod 11 and reliably maintains the attached state, so that the experimental fixture attached to the fixture B The experimental device held and supported by the device holding portion C2 of the support device C surely maintains its disposition position, for example, the relative position between the condenser H1 and the round bottom flask H2 changes, and the At the connection with the round bottom flask H2, the round bottom flask H2 or Serial condenser H1
Is not accidentally damaged.

In addition, the tool mounting bracket B has two outer peripheral planes 112, 11 extending in the vertical direction and connecting the inclined surfaces on both sides of the V-shaped holding groove B11 of the holding portion B1 to the ridge corner 114 of the vertical rod 11.
2 is attached to the vertical rod 11 in a state of being abutted and received, so that the fixture B is automatically positioned at a predetermined angle with respect to the vertical rod 11, so that the vertical The other holding portion B2 of the tool mounting bracket B attached to the rod 11 is always oriented in a fixed direction, and when a plurality of tool mounting brackets B are mounted on the vertical rod 11, all of these tool mounting brackets are mounted. All the other holding portions B2 of the metal fitting B (holding portions for attaching the experimental tool support) are oriented in the same direction. Therefore,
As shown in FIG. 1, even when a plurality of laboratory instruments H, H... Are arranged in the vertical direction, the laboratory instruments H, H. The experimental instruments H can be easily and reliably connected to each other.

Next, the fixture B is fixed to the lateral rod 12 of the frame 1 for physics and chemistry, and the lab fixture H is supported by the lab fixture C attached to the fixture B.
Will be described on the experimental table F.

First, as shown in FIG. 4 and FIG. 5, one of the holding portions of the above-mentioned fixture B which is oriented in the horizontal direction.
The above-mentioned horizontal rod 12 is provided on the inclined surfaces on both sides of the V-shaped holding groove B11 in B1.
After the surfaces 122, 122 connected at right angles to each other are arranged in a state of abutting and receiving in a surface contact manner, the holding screw bar B12 is screwed forward, and the ridge corner portion facing the upper side of the horizontal rod 12 is formed. By pressing against the 123, the horizontal rod 12 is clamped by the V-shaped clamping groove B11 and the clamping screw rod B12, and the tool mounting bracket B is stably attached to a desired position of the horizontal rod 12.

Then, the supporting rod C1 of the experimental instrument support C is clamped and fixed to the other holding section B2 of the instrument mounting bracket B which faces in the horizontal direction, and the experimental instrument support C is moved to the instrument clamping section C2. Is stably arranged in a state of protruding forward. Thereafter, the laboratory equipment H3, for example, a round-bottom flask is held and attached to the equipment holding part C2 of the upper laboratory equipment support C, and the laboratory equipment is arranged on the laboratory bench F.

In this state, as shown in FIG. 5, one of the holding portions B1 of the fixture B and the horizontal rod 12 of the physics and chemistry frame 1 are in a rectangular shape of the holding portion B1. Groove B1
Since the inclined surfaces on both sides and the flat surfaces 122, 122 on both sides connected to the ridge corner 124 of the horizontal rod 11 are in a locked state, the weight of the experimental device H3 is heavy or the experimental device H3 is heavy. Even when a hand or the like comes into contact, the device mounting bracket B does not unexpectedly rotate around the horizontal rod 12 and reliably maintains its mounted state. The experimental device H3 held and supported by the device holding portion C2 of the experimental device support device C attached to the device surely maintains its arrangement position.

[0032]

According to a first aspect of the present invention, there is provided a physics and chemistry frame formed by assembling a plurality of vertical and horizontal bars in a grid on a laboratory bench. Since the horizontal rod is formed in the shape of a square rod, a conventionally used appliance mounting bracket is formed on the vertical rod or the horizontal rod with the inclined surfaces on both sides of the K-shaped holding groove of the holding portion. By attaching to the vertical rod or the horizontal rod so as to match the flat surface on both sides connected to an arbitrary corner, it is possible to prevent the appliance mounting bracket from unexpectedly rotating around the vertical rod or the horizontal rod. Therefore, according to the above-mentioned frame for physics and chemistry, it is possible to accurately and surely dispose the experimental instruments on the experimental table and to conduct an experiment by assembling an experimental apparatus.

According to the frame for physics and chemistry according to the second and third aspects, the vertical rod and the horizontal rod are formed to have a square cross section, and an intersection of the vertical rod and the horizontal rod is used as a holding member. A vertical holding portion having a holding groove having a V-shaped cross section and a horizontal holding portion, which are integrated back to back, and which can be advanced and retracted toward the holding grooves of the vertical holding portion and the horizontal holding portion. A metal fitting including a rod is used, and both surfaces connected at right angles to each other with an arbitrary ridge corner in the vertical rod as a center are received in a surface contact state with the holding groove of the vertical holding portion in the holding metal, The two ends of the horizontal rod, which are connected at right angles to each other with an arbitrary ridge corner in the center, are received in the holding groove of the horizontal holding part in the holding metal in a state of surface contact, and the tip of the screw rod is connected to the vertical rod. And any of the above for horizontal bars By pressing each of the intersections of the vertical and horizontal rods by pressing them against the opposite edge of the edge, the intersection between the vertical and horizontal rods is integrally fixed, so that the appliance mounting bracket is attached to the vertical or the vertical rod. When mounting on the horizontal rod, the inclined surfaces on both sides of the U-shaped holding groove of the holding portion of the fixture for fitting are aligned with the flat surfaces on both sides connected at right angles to each other from the arbitrary ridge of the vertical rod or the horizontal rod. Therefore, the device mounting bracket can be attached to the vertical rod or the horizontal rod in a stable state without unexpected rotation about the vertical rod or the horizontal rod.

Further, when attaching the fixture to the vertical or horizontal rod by using one of the clamps, the other clamp of the fixture is oriented in a certain direction automatically and reliably. Therefore, the experimental instrument support is reliably and automatically protruded in a certain direction to the other holding portion of the instrument mounting bracket, and the experimental instrument is supported by the experimental instrument support to easily and reliably perform the experiment. The device can be assembled.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state of use of a frame for physics and chemistry according to the present invention.

FIG. 2 is an enlarged perspective view showing a connecting portion between a vertical rod and a horizontal rod of the frame for physics and chemistry.

FIG. 3 is a cross-sectional view showing a state in which an instrument mounting bracket is attached to a vertical rod of a frame for physics and chemistry.

FIG. 4 is a perspective view showing a state of use of the frame for physics and chemistry of the present invention.

FIG. 5 is a vertical cross-sectional view showing a state in which an instrument mounting bracket is attached to a horizontal rod of a physics and chemistry frame.

FIG. 6 is a perspective view showing a state in which an experimental fixture is provided by attaching a fixture to a horizontal rod of a conventional physical and chemical frame.

FIG. 7 is a perspective view showing a state in which an experimental fixture is provided by attaching a fixture to a vertical rod of a conventional frame for physics and chemistry.

FIG. 8 is a longitudinal sectional view showing a state in which an instrument mounting bracket is attached to a horizontal rod of a conventional physical and chemical frame.

FIG. 9 is a cross-sectional view showing a state in which an instrument mounting bracket is attached to a vertical rod of a conventional physical and chemical frame.

[Explanation of symbols]

 1 Physical and chemical frame 11 Vertical rod 111 Ridge angle 112 Outer peripheral plane 12 Horizontal rod A Clamping bracket A1, A2 Clamping part A11, A21 V-shaped clamping groove A12, A22 Clamping screw rod B Instrument mounting bracket B1, B2 Clamping part B11, B21 V-shaped holding groove B12, B22 Screw rod C for holding C Laboratory equipment support C1 Support rod C2 Equipment holding part

Claims (3)

[Claims] 1. A physical and chemical frame formed by assembling a plurality of vertical rods and horizontal rods on a laboratory table in a lattice shape, wherein the vertical rods and the horizontal rods are formed into square rods. A frame for physics and chemistry, characterized in that: 2. The physics and chemistry frame according to claim 1, wherein the vertical rod and the horizontal rod are formed in a square shape in cross section, and an intersection thereof is clamped and fixed by a clamp. 3. A holding metal fitting comprises a vertical holding portion having a holding groove having a rectangular cross section and a horizontal holding portion, integrated back to back, and holding each of the vertical holding portion and the horizontal holding portion. It is provided with a screw rod which can move back and forth toward the groove, and both surfaces connected at right angles to each other with an arbitrary ridge corner portion of the vertical rod as a center are received in the holding groove of the vertical holding portion of the holding metal in a surface contact state. At the same time, the end of the screw rod is set in a state in which both surfaces connected at right angles to each other with an arbitrary edge portion of the horizontal rod as a center are received in a surface contact state with the holding groove of the horizontal holding portion in the holding metal fitting, and 3. An intersection between the vertical rod and the horizontal rod is integrally clamped and fixed by pressing each of the vertical and horizontal rods on a side opposite to the arbitrary one. 6. The frame for physics and chemistry according to 4.