JPH0721993Y2 - Moving base plate - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a slide base used for installation and installation of various machines, instruments and devices.

[Conventional technology]

Examples of conventional slide bases are shown in FIGS. 3 and 4.

The one shown in Fig. 3 is of the rolling contact type.
Reference numeral a'denotes a lower member, 11b 'denotes an upper member, and a moving base plate on which a machine or the like is mounted can be moved by relative movement of these members.

Reference numeral 22 'is a ball caster, and a plurality of (four in the figure) upwardly arranged on the lower member 11a', the balls are rotatably supported. A bottom surface 23 'of the upper member 11b' constitutes a contact surface for contacting the ball caster 22 '.

The machinery / equipment is mounted on the upper member 11b '. The ball caster 22 'comes into contact with the contact surface 23' of the upper member 11b 'and receives the load of the mounted machine / appliance.

FIG. 4 shows another conventional example. This example is of a sliding contact type, and 13 'is a sliding contact surface provided on each of the lower member 11a' and the upper member 11b '.

The upper member 11b 'slides on the lower member 11a' along a sliding contact surface 13 'provided on each member.

[Problems to be solved by the device]

By the way, in the conventional rolling contact type moving base plate illustrated in FIG. 3, the upper member can make rolling contact on the lower member, and the operation force for moving the upper member may be small.
It has the advantage that it can be translated and rotated. However, if it is attempted to firmly fix the upper member on which a machine or the like is mounted to the lower member, a large force is applied to the caster portion projecting from the lower member, and damage is likely to occur. Further, in the conventional sliding contact type moving base plate illustrated in FIG. 4, the upper and lower members can be firmly fixed by the mutual contact of the sliding contact surfaces, but instead, the operation force of all operations becomes large. There is a defect. In this case, the application of grease can reduce the operating force to some extent, but the fixing of both members becomes weak. In this way, the factors of light operation force and free parallel movement / rotational movement are contradictory to those of firm fixation. In particular, when the device mounted on the upper member generates a large vibration, there is a problem that it is not suitable at all.

[Means for Solving the Problems]

Therefore, the moving base plate of the present invention is composed of an upper member and a lower member, and both members can move relative to each other.
A plurality of casters are arranged upward on the lower member, and sliding contact surfaces at a plurality of locations contacting the upper member are provided so as to project upward, and the protruding height of the casters is the protruding height of the sliding contact surface. And a contact surface having a shallow recess, which is capable of contacting the caster while facing the caster, an inclined surface connected to the contact surface, and an inclined surface connected to the inclined surface.
It is characterized in that a plurality of second contact surfaces having recesses deeper than the height of the casters are recessed in the sliding contact surfaces of the upper member.

[Action]

The above-described moving base plate of the present invention moves the upper member relative to the lower member during the movement, and the upper member is moved to the upper member by the ball caster protruding above the sliding contact surface protruding from the lower member. The upper member moves due to rolling contact along the recessed shallow contact surface, and the upper member is supported by the caster of the lower member and is connected to the shallow contact surface recessed in the upper member facing the caster. The height gradually lowers via the inclined surface, the upper member approaches the lower member side, and finally the ball caster enters the deep concave portion connected to the inclined surface of the upper member, and the caster loses its contact. Sliding contact between the sliding contact surface that protrudes on the lower member and the sliding contact surface on the lower surface of the upper member causes sliding contact, and the load is not applied to the casters, and the surface contact between the two causes the frictional force to increase. Ri is a fixed state. The reverse operation is also possible. As described above, in the moving base plate of the present invention, the rolling contact by the ball casters and the sliding contact between the sliding contact surfaces that release the contact state of the ball casters are made by the inclined surfaces of the contact surfaces that are recessed in the upper member. By switching, it makes a direct sliding contact at the time of fixing and secures it securely, and supports it by rolling contact by the action of the ball caster at a position other than the fixed position,
It enables movement with a small force.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall perspective view of a moving base plate according to a first embodiment of the present invention, and FIG. 2 is an overall perspective view of a moving base plate according to a second embodiment of the present invention.

FIG. 5 is an explanatory view showing the action of the moving base plate of FIG.
(A) is a side view showing a contact state between a ball caster and a shallow contact surface recessed in the upper member, (b) is a side view showing a contact state between the caster and an inclined surface recessed in the upper member,
(C) is a side view showing a state in which the caster enters a deep recess formed in the upper member and the caster is separated from the contact state.

In FIG. 1, 11a is a lower member and 11b is an upper member. Machines, instruments and devices are mounted on the upper member 11b and moved by mutual movement of both. Reference numeral 13a denotes a sliding contact surface provided on the lower member 11a so as to project upward at a plurality of positions, and reference numeral 22 denotes a ball caster, which is similarly arranged upward on the lower member 11a. 1
The sliding contact surface 3b of the upper member 11b faces the sliding contact surface 13a of the lower member. Reference numerals 23 and 25 are contact surfaces provided on the upper member 11b, and an inclined surface 24 is provided on a part thereof.

The height of the ball caster (22) is higher than the height of the sliding contact surface (13a) projecting upward from the lower member (11a) at a plurality of locations.

Next, referring to FIGS. 5 (a), (b), and (c), the function and effect of the apparatus of this embodiment will be described. In the state of FIG. 5 (a), the ball caster 22 is recessed at a plurality of positions on the upper member 11b. It shows a state in which it is in contact with the contact surface 23 having a shallow recess provided, and in this state, the upper member 11b rides on the ball casters 22 provided at four locations and can move in the direction of the arrow shown in the figure with a small force. Is. At this time, the distance shown is B>
It is A.

In FIG. 5B, the ball caster 2 is moved by moving the upper member 11b.
2 shows a state of contact along the inclined surface of the upper member 11b. In this state, if the upper member 11b moves to the right in the figure, the gap A decreases. (Also, if the upper member 11b moves up to the state shown in FIG. 5 (c), the ball caster 22 becomes free in the recess of the upper member (contact is not made)). The upper member 11b in this state.
The sliding contact surface 13b on the lower surface of the lower surface and the sliding contact surface 13a projecting from a plurality of places on the lower member 11a are in surface contact with each other. Then, the frictional force increases, and the force required to move the upper member 11b is (a),
It becomes considerably larger than in the case of (b) and becomes in a fixed state.

When the ball caster 22 is located directly below the contact surface 23, the sliding contact surfaces 13a and 13b of the upper and lower members are apart from each other, and the upper member 11b is moved a little and the ball caster 22 is located directly below the inclined surface 24. Then, the distance between the upper and lower members changes. Further, when the ball caster 22 is located immediately below the contact surface 25, the sliding contact surfaces 13a and 13b of the upper and lower members are in contact with each other.

At this time, the ball caster 22 is separated from the contact surface 25,
The ball caster 22 is not loaded by the machinery mounted on the upper member 11b. Another embodiment shown in FIG. 2 will be described. In this embodiment, of the contact surfaces 23, 25 provided on the upper member 11b, the contact surface 23 is formed in a circular shape. Similar to that of.

As a result, in the present embodiment, the parallel movement and the rotational movement of the upper member 11b with respect to the lower member 11a can be easily performed with a light operating force.

[Effect of device]

As described above, according to the moving base plate of the present invention, the parallel movement and the rotational movement of the upper member with respect to the lower member can be performed with a light operation force, and at the time of fixing, the caster portion of the lower member is placed on the inclined surface of the upper member. Can be moved to bring the upper member and the lower member into direct contact with each other, and this portion can be firmly tightened and fixed by, for example, bolts.

Moreover, at this time, since the caster portion of the lower member is separated from the upper member, mechanical damage can be prevented without applying an excessive load to the caster portion.

[Brief description of drawings]

FIG. 1 is an overall perspective view of the moving base plate of the first embodiment of the present invention, FIG. 2 is an overall perspective view of the second embodiment of the present invention, and FIG. 3 is the entire conventional rolling contact type moving base plate. FIG. 4 is an overall perspective view of a conventional sliding contact type moving base plate. FIG. 5 is a functional explanatory view of the moving base plate of FIG. 1, (a) is a side view showing a contact state between a ball caster and a shallow contact surface recessed in the upper member, and (b) is the caster. FIG. 3C is a side view showing a state of contact with an inclined surface recessed in the upper member, and FIG. 6C is a side view showing a state where the caster is separated from the contact state and the sliding contact surfaces of the upper and lower members are in surface contact with each other. . 11a …… Lower member, 11b …… Upper member, 13a, 13b …… Slip contact surface, 22 …… Ball caster, 23,25 …… Contact surface, 2
4 …… Sloping surface.

Front page continued (72) Inventor Naoji Iikubo, 12 Nishiki-cho, Naka-ku, Yokohama, Kanagawa Ryohichi Engineering Co., Ltd., Honmoku Plant (72) Inventor, Yasushi Chiba, 12 Nishiki-cho, Naka-ku, Yokohama, Kanagawa Ring Co., Ltd., Honmoku Plant (72) Inventor, Katsuhiko Ishikawa, 2nd, 160 Maeda, Komyoji-cho, Minami-ku, Yokohama-shi, Kanagawa Nissei Kogyo Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A moving base plate comprising an upper member and a lower member, both members of which can move relative to each other, wherein a plurality of casters are arranged upward on the lower member and a plurality of places are in contact with the upper member. The sliding contact surface of the caster is projected upward, and the projecting height of the caster is higher than the projecting height of the sliding contact surface, while the upper member has a shallow surface capable of facing the caster. A contact surface having a recess, an inclined surface connected to the recess, and a plurality of second contact surfaces connected to the inclined surface and having a recess deeper than the height of the caster are provided in the sliding contact surface of the upper member. A movable base plate that is characterized in that.