KR101551331B1 - Clamping apparatus for practical training materials - Google Patents

Abstract

The disclosed clamping device for a training material is rotated and operated at the same time in a first posture in which the groove of the training plate is allowed to go in and out and a second posture in which both ends thereof are engaged and avoids friction with the training plate during its rotation, And a hook (21) for pressing and fixing the training plate in the second posture. That is, the hook 21 does not rub against the training plate even when repeated operations are performed, so that the hook 21 is not worn, thereby providing an effect of extending the service life.

Description

[0001] CLAMPING APPARATUS FOR PRACTICAL TRAINING MATERIALS [0002]

The present invention relates to a clamping device which can be fixedly attached or detached to and from a training plate by integrally attaching and fixing to the respective materials so that the materials necessary for practice and experiment can be placed on the training plate, So that the clamping element is not worn during the fixed separation operation.

In addition to experiments for academic research and technological development in various technical fields, various experimental and practical equipments are being used for practical training for students. For example, various kinds of pneumatic or hydraulic equipment such as actuators, valves, instruments, etc. are used as experimental equipments for the implementation of automation system of production equipment or structures. Electric and electronic control equipment are used. And implement it in real-world conditions.

In order to arrange and demonstrate laboratory equipments, it is necessary to maintain the stable state of each position of the equipments with each other. Fixing the equipments primitively takes too much time and it is not easy to change the arrangement. It is an obstacle to complete the lab in time. Therefore, a clamping device such as the subject matter of the present invention is needed that can easily fix or separate each component for efficient laboratory practice.

As an example of prior art related to the subject matter of the present invention, Patent Document 1 (Korean Patent Registration No. 10-0316595) discloses a fixing device capable of attaching and detaching an experimental exercise equipment to a fixed frame formed with fixing grooves at regular intervals. The fixing device is provided with a rotating body which is rotatable by 90 ° with a lever on one side and has a latching piece projecting from the center of the bottom. The engaging pieces have different widths and vertical lengths, and the width thereof is smaller than the fixing groove opening width of the fixed frame, and the length thereof is larger than the opening width thereof. That is, the rotation of the rotating body changes the attitude of the engaging piece into or out of the fixing groove, or from the inside of the fixing groove to the position where the both ends of the engaging piece are engaged and fixed, It is.

The clamping device disclosed in the following Patent Document 2 (Korean Patent Registration No. 10-0459291) is configured to include a gear train for rotating a clamping element, which is in the same shape as the retaining piece of the above-described Patent Document 1. The gear train has the advantage that the angle of rotation of the handle (lever) can be reduced according to the gear ratio, and also it can be operated with a small force.

The clamping device disclosed in the following patent document 3 (Korean Patent Registration No. 10-0664976) has a structure in which a clamping member of the same type as that of the above-described patent document 1 is rotated, The racks are alternately fixed or released by pressing them alternately. Such a configuration has an advantage that it can be operated in a narrow space.

KR P 10-0316595 B1 (November 22, 2001) KR P 10-0459291 B1 (November 22, 2004) KR P 10-0664976 B1 (2006.12.28)

In order to hold the clamping element such as the above-described latching element of the related art in a fixed posture, both ends of the clamping element must be held in a state of pressing the inner edge of the opening of the fixing groove. However, the material of the clamping element is usually a synthetic resin, and the clamping element having a fixing groove is a metal, so that the clamping element is easily worn by friction. If the clamping element is worn, the clamping force is weakened and the clamping element is damaged.

Accordingly, it is an object of the present invention to provide a clamping device for a training material which has a long lifetime by solving the problem of wear of the clamping element.

To accomplish the above object, the clamping device for a training material according to the present invention is for detachably securing each of the training material to a training plate having a predetermined width at regular intervals and a wide recessed groove, A first position in which the housing can be rotatably supported by the housing and can be rotated and elevated and protruded from the center of the bottom surface of the housing so as to be rotatable with respect to the training plate, A clamp operative member having a hook which is switched to a second posture in which it can not be separated from the groove, and an operating means for moving the clamp operative member at the same time as the rotation of the clamp operative member is inserted into the groove of the practice plate, The first and second postures are raised and lowered to avoid friction with the training plate, and in the second posture, It is configured to be in its features.

The operating means includes an end cam having a spline shaft and a cam curved surface displaced in the axial direction integrally formed or coupled with the hook in the clamp actuating body integrally with the hook and being received in the housing and rotatable, A clamp rotating operation body which has a spline boss which is fitted and which is operable to be rotated by an operating knob which is drawn out from one side of the housing housing, a cam which supports the cam curved surface of the end cam and causes the clamp to move up and down according to the displacement, And a clamp lifting / supporting plate having an interlocking portion so that the hook is rotated in accordance with the operation of the clamp rotating operation body and is raised / lowered according to the displacement of the curved surface of the cam.

It is preferable that the clamp lifting support plate is elastically provided so as to be elastically supported with respect to the cam curved surface.

In the clamping device according to the present invention, the hook and the spline shaft as the clamping element and the cam move integrally together. The spline boss in which the spline shaft is fitted is rotatably operated by the handle. When the spline boss is rotated, the spline shaft is rotated, and the hook and cam are also rotated. According to this rotation, the hook can be switched to the first posture in which the hook can be moved in and out with respect to the groove of the training plate, and the second posture in which both ends of the hook are hooked inside the groove edge, The end cam is subjected to a force that moves in the axial direction in accordance with the cam displacement of the cam curved surface that contacts the cam interlocking portion during the rotation, and the movement of the end cam in the axial direction is permitted by the engagement of the spline shaft and the spline boss. By this cam interlocking, when the hook is shifted from the first posture to the second posture, the hook rises or rises after the drop, and the practice plate is pressed and fixed in the second posture, thereby avoiding friction with the training plate during its rotation operation . The cam interlocking portion to which the elasticity is applied resiliently supports the hook to prevent it from being forcibly pressed.

As described above, according to the present invention, the hook, which is a clamping element of the clamping device, can be operated without friction with the training plate, thereby solving the problem of abrasion thereof and effectively lengthening the life of the clamping device. This will also contribute to enhancing the effectiveness of the training.

1 is a perspective view showing the outer shape of a clamping device according to an embodiment of the present invention;
2 is a perspective view of a clamping device according to an embodiment of the present invention as viewed from below.
3 is a perspective view of a clamping device according to an embodiment of the present invention.
Fig. 4 shows a state in which the clamping device according to the embodiment of the present invention is arranged on the bottom surface road and the practice plate.
5 is a plan view showing a structure for removing a part of a housing of a clamping device according to an embodiment of the present invention and cutting the main part and rotating the same.
6 is a plan view showing a structure for lifting and lowering operation according to a rotation operation by removing a part of a housing of a clamping device according to an embodiment of the present invention.
FIG. 7 is a sectional view showing a process of inserting a clamping device according to an embodiment of the present invention into a practice plate. FIG.
8 is a cross-sectional view showing the semi-rotary operation state after the clamping device according to the embodiment of the present invention is inserted into the practice plate;
9 is a sectional view showing a state in which the rotation operation is completed after the clamping device according to the embodiment of the present invention is inserted into the practice plate.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The accompanying drawings are merely intended to aid in understanding of the present invention, and some elements may be omitted or exaggerated, and the present invention is not limited to the technical idea of the present invention.

In Fig. 1, reference numeral 10 denotes a housing of the clamping device according to the present invention. On the front face of the housing 10 is an opening 11 through which the operating handle 32 is drawn out. On the bottom surface of the housing 10, there is a hole 12 at the center thereof as shown in FIG. 2, and a hook 21 protrudes outside the hole 12. Four projections 13 disposed on the front, rear, right, and left sides of the hook 6 guide the position of the housing 10 when the housing 10 is placed on the training plate, (See Figs. 4 and 7 to 9) so that the housing 10 does not flow during operation. Four holes 14 passing vertically through the four corners of the housing 10 are for fastening the bolt elements to securely attach them under experimental equipment, not shown.

3, the housing 10 is a synthetic resin molded product and is assembled into an upper housing 10a and a lower housing 10b. The boss 15a formed in the upper housing 10a is formed in the lower housing 10b After inserting into the hole 15b, another bolt element can be fastened from underneath and assembled. Here, the positions of the bosses 15a and the holes 15b may be reversed. The cylindrical portion 16 formed at the center of the inner surface of the upper housing 10a receives the end cam 23 of the clamp actuating body 20 to be described later and rotatably supports it. The inner surface of the lower housing 10b is provided with a cylindrical portion 17 which is formed around the hole 12 and which is formed in the opening 11 described above and which rotates the clamp rotating operation body 30 As possible. The upper housing 10a and the lower housing 10b are provided with a fitting hole 18a on one side and a fitting hole 18a on the other side in order to securely clamp the clamp lifting support plate 40 to be described later between the upper housing 10a and the lower housing 10b. A fitting protrusion 18b to be fitted is formed at each of four corners.

The clamp actuating body 20 comprises a hook 21, a spline shaft 22 and an end cam 33. The hook 21, the spline shaft 22 and the end cam 23 can be integrally formed or can be assembled separately.

The clamp rotating operation body 30 is formed with a spline boss 31 to which the spline shaft 22 of the clamp operating body 20 is inserted at the center and a manipulating knob 32 is connected to one side. The handle 32 can be pulled out of the opening 11 on the front surface of the housing 10 and can be gripped by hand.

The clamp lifting and supporting plate 40 has a hole 51 having a size such that the hook of the clamp actuating body 20 and the spline shaft 22 pass therethrough and the cam interlocking portion 42 extending inward from the hole 41, . The cam interlocking portion 42 contacts the cam curved surface 24 of the end cam 23 and is disposed at a position corresponding to the top dead center 24a and bottom dead center 24b of the cam curved surface 24, And the end cam 23 is interlocked in the axial direction during its rotation. The four corners of the clamp lifting support plate 40 are for inserting the fitting projections 18b in the lower housing 10b when assembled between the upper and lower housings 10a and 10b.

The spline shaft 22 and the end cam 23 are connected to the clamp rotating operation body 30 and the clamp lifting support plate 40 which will be described later in the clamping operation body 20 described above, ) As the operating means of the present invention.

4, the width of the hook 21 of the clamp actuating body 20 is slightly smaller than the diameter of the hook hole 12 in the housing 10b, and at the same time, And the length thereof is slightly smaller than the width of the grooves 51. As shown in Fig. That is, the hook 31 can move in and out of the groove 51 of the training plate 50 in the first posture shown by the solid line in Fig. 4 (see Fig. 7) In a second posture, both ends 21a and 21b are engaged with the edge of the groove 51 (see Fig. 9). The shape of the hook 21 is a form already known by the patent documents cited above.

The spline shaft 22 of the clamp operating body 20 is fitted into the spline boss 31 of the clamp rotating operation body 30 and is restrained in the rotating direction as shown in Fig. Is rotated together with the sieve 30, and movement in the direction of the movement relief axis is allowed. For reference, the handle 32 can be rotated within a range of 90 [deg.] Within the opening 11 of the front surface of the housing 10. [ That is, when the knob 32 is rotated by 90 degrees, the clamp operating body 20 is rotated together with the clamp rotating operation body 30, so that the hook 21 is switched to the above-described first posture or the second posture will be.

The bottom surface of the end cam 23 of the clamp actuating body 20 is formed by the cam curved surface 34 displaced in the axial direction. In the preferred form of the end cam 23, the top dead center point 24a and the bottom dead center point 24b are repeated at intervals of 90 degrees, and the portion between them is inclined. 6, the end cam 23 is positioned above the clamp lifting support plate 40 and can be freely rotated and lifted in the hole 41. The cam curved surface 34 is supported by the clamp lifting support plate 40, And is supported in contact with the cam interlocking portion 42 of the camshaft. That is, the end cam 23 is raised or lowered in response to the displacement of the cam curved surface 24 contacting the cam interlocking portion 42 during its rotation. The upper and lower dead points 24a and 24b of the end cam 23 are spaced apart by 90 degrees from each other, The hook 21 is raised in the first posture and the second posture, and is raised from the first posture to the second posture or from the second posture to the first posture, .

The hook 21 of the clamping device of the present invention embodied above can be inserted into the groove 51 of the training plate 50 as shown in Fig. 7 in a state of being in the first posture. When the knob 32 is rotated in this state, the hook 21 descends as shown in Fig. 8 until it rotates by about 45 degrees, and then rises as shown in Fig. 9 while rotating in the second posture up to 90 degrees. 9, both ends 21a and 21b of the hook 21 press the inner edge of the groove 51 of the training plate 50 and are fixed. As the hook 21 is lifted after descending while rotating the hook 21, the ends 21a and 21b thereof can be prevented from rubbing against the training plate 50. 9, when the handle 32 is reversely operated, the clamp 21 of the clamping device of the present invention is fixed to the training plate 50. Since the hook 21 descends after descending, the fixed state of the clamping device is released without friction with the training plate 50 Can be separated from the practice plate (50).

 It is preferable that the above-mentioned clamp lifting support plate 40 is provided with elasticity so as to support the end cam 23 with sufficient elastic force. By doing so, it is possible to prevent the hook 21 from rising due to unreasonable operation when the training plate 50 is pressed and fixed, and it is possible to maintain a stable fixing force against any external impact.

On the other hand, unlike the example shown in the drawing, when the above-described cam interlocking portions 42 are arranged at intervals of 180 degrees, the hook 21 is lowered when rotated in the first posture and raised when rotated in the second posture It is possible to obtain the same effect of achieving a fixed state while avoiding the friction.

As described above, the clamping device of the present invention can be implemented in various other forms other than the embodiments described in the above and illustrated in the drawings.

A clamping device comprising a clamping member and a clamping member for clamping the clamping member to a clamping position, 42: cam interlocking portion, 50: training plate, 51: groove

Claims (3)

A housing which is fixedly attached to each training material and which is rotatably supported by the housing and which can be lifted and lowered; A hook which is protruded outside the center of the bottom surface of the housing and can be rotated with respect to the training plate and is switched to a first posture in which the groove can be taken out or removed, A clamp operating body and an operating means for lifting and lowering the clamp operating body simultaneously with rotation so that the hook is raised or lowered during rotation from the first posture to the second posture to avoid friction with the training plate, 2 < / RTI > posture of the clamping device.
The end effector according to claim 1, wherein the operating means includes an end cam having the spline shaft and the cam curved surface displaced in the axial direction integrally formed with or coupled to the coaxial shaft with the hook, A clamp rotating operation body which has a spline boss for fitting the spline shaft and is rotatably operated by a manipulating knob which is drawn out from one side of the housing housing, Wherein the hook is rotated according to an operation of the clamp rotating operation body and is moved up and down according to the displacement of the curved surface of the cam.
The clamping device for a training material as claimed in claim 2, wherein elasticity is imparted to the cam-linked portion of the clamp lifting support plate to elastically support the cam curved surface.

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