JPS62167929A - Clamping device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial field of application) Shukan IJ+ is used for chamber or autoclave doors, sealing end plates,
Regarding installations for temporarily locking or clamping parts that need to be firmly fixed, such as elevator entrances, it can be used as a locking device to be fixed on the frame of an opening, or as a locking device for machine tools. (Relating to a device useful as a clamping tool that is fixed on a board and holds a part to be processed.)

BACKGROUND OF THE INVENTION Locking devices known in the art are of the type that exerts high pressure on the member to be firmly clamped, and include a bearing 5ole fixed on a support by fastening means.
), consisting of a swinging clamp arm or scissors and a control member which rotates so that when the control member is moved, for example by pivoting, the swing arm or one end thereof, i.e. the end of the clamping section, acts on the part or member to be clamped. It is. However, the problem is that the clamp arm is angularly movable or has little or no thermal movability in the longitudinal plane, and its use is limited to parts that can be located directly on the pressure surface (clamp end). Limited only.

(Problems to be Solved by the Invention) It is an object of the invention to provide a lamp arrangement which is not only angularly movable but also longitudinally movable.

Another object of the invention is to provide a lamp arrangement in which the control member acts effectively both longitudinally and angularly to actuate the parts to be closed and closed.

(Means for Solving the Problems) The above object includes a bearing member, a clamp arm slidably and rotatably provided on the bearing member, a control member rotatably provided in the bearing member, and The clutch means includes seven stages of clutches connecting the control member to the clamp arm, and the clutch means has a linear drive means for moving the clamp arm longitudinally between a retracted position and an extended position in response to rotation of the control member. The linear drive means is a chain that stops the longitudinal movement when the clamp arm reaches the contact point. This is achieved by a clamping device characterized in that it has a rotational drive means responsive to the rotation of the control member which clamps a part between the clamp arm and the bearing member to rotate the clamp arm. It was done.

(Example) Next, the present invention will be explained in detail based on illustrated embodiments.

The illustrated clamping device is similar to a bolt and has three separate parts: a bearing plate;
5ole) l, Clamp rocking plate (clasproc
ker) 2, and a control member 3 that controls the longitudinal and angular movement of the rocking plate 2.

The bearing plate 1 is flat in shape and is provided with a shoulder hole 4 into which a driven sleeve 5 is inserted, which receives the grooved surface 3 of the control member 3.

Also for fixing the bearing plate on a support such as a chamber or autoclave door, a sealing panel, or a machine tool 28i51 if the device is used not only as a bolt but also as a simple clamp for the parts to be machined. It has a hole 6 for passing a fixing member 7 such as a hexagonal hollow head bolt.

The rocking plate 2 is in the form of an elongated arm, has a hole 8 through which the control member 3 passes, and has a bearing end 2 at which the rocking plate itself has a constant position even if it is inclined as shown in FIG. Assembly of the zero leg 9, which has the leg 9 hinged so that it can be placed in a horizontal position, is obtained by means of a suitable mating system with balls (FIG. 6). The leg 9 has a mortise 10 into which a rib or tenon 11, which is part of the rocking plate 2, is fitted.

and the stopper 9 of the leg 9. ．． Reference numeral 92 has a hemispherical shape, and the Kf portion 11 and l12 have complementary shapes so as to form a hinge seat for the leg portion 9 on the rocking plate.

The rib 11 of the rocking plate 2 has a transverse hole 12 for receiving two balls 13, which are connected to the spring 1.
4, the ends of the hole 12 are held in place by shavings or raised portions into the chan. The receiver is assembled in a convenient manner with its mating parts made of gold (sl+oc) and has two holes 15 passing through the stop 91 and 9□. In this type of connection method, the bridge is made of metal that can be removably assembled, and also serves as a rotating joint as a hinge.

In this embodiment, the control member is a screw bearing 3 that is screwed into the driven sleeve 5 and controls the rocking of the rocking plate 2.
．． It consists of a shaft 3 having a shaft 3 and a bearing accommodating a clutch 16 which is self-extending by means of a movable head 17, for example in the form of a set screw. The means for angularly moving the rocking plate 2 are a hemispherical dome 18 with a threaded portion 3 of the control shaft in its extension and a cup and a lower surface 2 of the rocking plate 2.
It consists of a bearing on a ring 19 fitted between □.

The ring 19 has a washer 19. whose shape matches the hemispherical dome 18. Consisting of The control shaft 3 is axially fixed to the rocking plate 2 by both a ring 22 juxtaposed to the L-face 23 of the rocking plate and an annular clip 20,21 which clamps and fixes the clutch 16. The clutch 16 has a split ring retainer fitted and fitted onto the smooth surface 32 of the shaft 3, and all actuation on the ring 16 is taken up by an adjusting screw 16 which pushes the ring 16 radially onto the shaft 3.

The bearing plate 1 has a bridge-like raised part 23 that intersects with the rocking plate 2 (Fig. 1), and an opening 2 that passes across the bridge part 23.
4 (substantially square in shape) is formed on the base surface on which the swinging plate 2 is hinged like the rod of a scale, with an axis extending over the entire width of the bridge-like opening. Axis 2
5.

The operation of the lock using this device is as follows.

In the initial movement position of the locking device, that is, in the rest position of the locking device, the rocking plate 2 occupies the position P indicated by the dashed-dotted line in FIG. It is retracted along with □. At this stage, the control shaft 3 is in its lowered position and the threaded surface 3 has reached the bottom of the driving sleeve 5. This position is;
It is located slightly higher than □. Further, in this state, the rocking plate is held on the pivot shaft 25 supported by the bridge portion 23.

When the shaft 3 is rotated, for example by a spanner or a key fitted into the polygonal head 17, the rotation causes a forward movement of the rocker plate. This movement is effected by two nails 27 protruding from the upper surface of the rocking plate).The clutch 16 is connected to the slide by a drive finger 26 fitted between the slides.
This is done by The distance between the two wooden nails is clutch 16. Therefore, the angular amplitude of the control shaft 3 due to its rotation is made possible. The longitudinal stroke of the rocker plate is therefore defined by one of the two nails 27 and by the joining of the rear end 81 of a rectangular opening in the rocker plate as shown in FIG. At this stage, the rocking plate is immobilized in the axial direction and its movement is prevented. if,
If the rotation of the control shaft 3 is sustained, the force couple (torque) on it becomes greater than the couple caused by the friction of the ring 16 on the shaft, and the rocking plate becomes axially immobile and the drive finger Since the friction ring 16 is rotatably tightened together with the slider by the nails 26 and 27, the connection between the two members is released. When the friction ring is uncoupled from the control shaft and the shaft continues to rotate, the shaft is moved vertically by the screw in the sleeve 5 and the rocking plate is tightened by the pivot 25 in reaction. This reaction is due to the fact that the direction of rotation of the control shaft 5 is opposite to the threading of the driving sleeve 5 of the bearing plate l. In other words, if the sleeve female thread rotates counterclockwise, the shaft rotates clockwise, and the shaft rises as shown in FIG. unlock.

In the position shown in FIG. 2, the rocking plate 2 is substantially in a hydraulic state, and has therefore begun to rotate with respect to the position shown in FIG. Continuing the above description, the angular movement of the rocking plate begins after the end of its axial movement. These two types of movement are performed sequentially.

The transition is ensured by disengaging the clutch of the 1.1 rilling 16 so that the shifting and rocking motion continues instantaneously without any pauses.

In the position shown in FIG. 3, the control shaft 3 is at the highest position, and it can be seen that the angular stroke of the rocking plate 2 with respect to the control shaft 3 has been completed. In this position, the bearing band 2X of the rocking plate and its leg 9 firmly clamp the member 29 in the locking position by means of the lever formed by the rocking plate. As mentioned above, the member 29 may be a part to be processed, a door, a window frame, or a lid of a closed container such as an autoclave or a tank.

The angular interlocking of the rocking plate 2 occurs before its axial interlocking ends. Therefore, if the member 2 to be clamped
9 or step-shaped, and if the front surface 21 of the rocking plate is adjacent to the member before the end of the longitudinal stroke, the clamping action due to the rotation of the rocking plate will meet resistance once from the rocking plate. It should be understood that the clutch 16 is obtained by slipping so that the control shaft 3 rotates independently, and the reaction causes rocking of the rocking plate.

Furthermore, the clamping height of the rocking plate 2 is such that the bearing plate l is the seventh
This could be changed by increasing the height of the insertion chock 30 as shown in the figure. This chock is substantially in the form of a bearing plate l and includes a groove 31 and a recess 32. The grooves 31 are for the fixing member 7 that fixes the bearing plate l on the support body, and the recesses 32 are for passing the telescopic rods 33 which are housed in the blind holes 34 of the bearing plate and are unevenly distributed by the extension springs 35. (Figure 2). One or more chocks 30 of varying thickness can be placed under the underside of the bearing plate l before the bearing plate l is fixed on its support, the chocks 30 being located in the recesses 31 and 32. It is held in place longitudinally and laterally by located members 7 and 33.

The fixing member 7 of the bearing plate l is fixed because the rocking plate also has a hole 36 passing through it, and the hole 36 is fixed when the rocking plate 2 is in the retracted position ff1P (FIG. 1). This is possible by bringing it in line with 7. As shown in FIG. 4, the bolt 7, which has a hollow hexagonal head, has notches not only in the hole 36 of the slider but also in the bridge portion 23, so that it can be tightened with a tool.

In order to avoid eccentricity of the position of the rocking plate with respect to the axis that falls due to gravity and prevents displacement of the rocking plate 2, a lift nail 37 is provided on the bearing plate l, which is accommodated in a blind hole 38 and biased by a spring 39, to prevent the rocking plate from moving. The plate can be supported to maintain the rocker plate in a substantially elevated position.

In order to limit the lateral stroke of the control shaft 3 with respect to the driving sleeve 5 of the bearing plate 1, a height indicator 40 (see FIG. 5) is attached to the side end of the bearing plate 1. The upper end 41 of this indicator 40 is bent inward at right angles, and when the rocking plate reaches a point t that is too high, the pointer 41 is elastic, but notifies the operator that the rocking plate has reached its rocking limit position. Warn. - In fact, if the inclination of the rocking plate becomes too large, the height indicator 40 is deformed so that when the rocking plate 2 escapes from the fingers 41, it emits a unique metallic sound to warn you.

It will be appreciated that variations to the above device are possible within the scope of the invention. The device includes an axially and angularly movable rocker plate operated by a single, common clutch control member, which clutch becomes inoperative when the torque applied to the control member exceeds the frictional resistance torque of the control member. 19 of the split rings! The torque resulting from rubbing is greater than the torque required on the first member by the medium of the fingers 26 or the shaft 3
Rocking.

The final point of movement of plate 2 is insufficient to lock it.

(Effects of the Invention) The clamping device of the unreleased 1!11 has a simple structure, is easy to operate, and can be used for various purposes.

For example, it can be fixed to the frame or enclosure of a door or window, or to a fixed part L of a container, and can be used to tightly and accurately lock a lid or flap. If it is fixed to the base of a weight-bearing machine, the force is increased by the lever action of the rocking plate and can be used to clamp the part to be machined. It can also be used as a bolt when fixed to a sliding door or window frame to lock the window partition. In this case, the rocker plate acts as a bolt due to its double axial and angular movement.

For this purpose, the control shaft could be provided with another hexagonal recess 42 at the opposite end of the head 17, so that the shaft 3 could be rotated closer to both sides of the support.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3 are longitudinal cross-sectional views of a clamping device according to an embodiment of the invention, showing three states IE' in sequence of operation. shows. 4 is a plan view of the apparatus of FIG. 1; FIG. FIG. 5 is a sectional view taken along line B-Bi in FIG. 4. FIG. 6 is a sectional view taken along line A--A in FIG. 2. FIG. 7 is a plan view of the clamping device and the chock used to increase the height.

Claims (1)

[Scope of Claims] 1. A bearing member, a clamp arm that is slidably and rotatably provided on the bearing member, a control member that is rotatably provided in the bearing member, and a control member that is a clutch means coupled to a clamp arm, said clutch means having linear drive means for longitudinally moving said clamp arm between a retracted position and an extended position in response to rotation of said control member; The means includes an interlocking tool that stops the movement in the longitudinal direction when the clamp arm reaches a contact point, and a means that rotationally moves the clamp arm by clamping a part between the clamp arm and the bearing tube member. A clamp device characterized by having a rotation drive means responsive to rotation of a control member. 2. The clamp device according to claim 1, wherein said linear drive means includes contact means for limiting said longitudinal movement. 3. The clamp arm defines an aperture, the control member extends through the aperture, and the contact means comprises a cooperating wall of the control member and the aperture.
Clamp device as described in section. 4. Claim 1, wherein the bearing material includes a bridge member that defines a rotation axis, and the clamp arm passes through the bridge member, allowing the rotation axis to be slidable and rotatable. clamping device. 5. The linear drive means protrudes from the clutch means;
a fork-like means consisting of a finger rotatable with said control member and first and second projections from said clamp arm during which said finger extends; 2. A clamping device according to claim 1, which produces a longitudinal movement. 6. A clamping device according to claim 5, wherein said finger is capable of engaging both said protrusions at the same time, thereby limiting said longitudinal movement. 7. said control member comprises a threaded portion mating with a threaded counterpart of said bearing member, whereby rotation of said control member causes a displacement such that said clutch means frictionally engages a smooth surface of said control member; 2. A clamping device according to claim 1, having interlocking, encircling rings. 8. The rotary drive means comprises a partially spherical annular portion on the control member and a mating member sandwiched between the annular portion and the clamp arm. clamping device. 9. A clamping device according to claim 7 or 8, wherein said ring is a split ring comprising means for taking up movement between said ring and said control member. 10. said clutch means being limited sufficiently to cause said longitudinal movement of said clamp arm but insufficient to prevent rotation of said control member when said clamp arm reaches said point of contact; 2. A clamping device as claimed in claim 1, comprising a rotary clutch that transfers torque up to a value equal to or greater than the specified value. 11. The bearing member defines a first hole for securing the clamping device to a support, and the clamp arm has another hole for applying a tool to the fixing member in the first hole; 2. A clamping device according to claim 1, wherein a hole is aligned with said first hole in said retracted position of said clamp arm. 12. The bearing member includes a positioning member that is telescopic within the bearing member and resiliently biased toward a protruding position;
Clamp according to claim 1, wherein the device has a chock member for increasing the clamping height of the bearing sleeve, and the chock member is positioned and fixed in the protruding position by means having the positioning member. Device. 13. The control member of claim 1, wherein the control member has an axis represented by a first and a second end, and the control member is rotated by use of a rotary tool on each of the ends. clamping device. 14. The scope of the patent comprising a leg on which the clamp arm engages with the part, and a stop means such that the leg is removably engageable with the arm and pivotably engages with the part at various angles. The clamping device according to item 1. 15. The clamp device according to claim 1, further comprising an indicator member projecting from the bearing member, the indicator member having an elastic portion that acts on the clamp arm at a position related to its maximum rotational position. . 16. A clamping device according to claim 1, wherein said part is provided on a frame which is a closure member for closing said frame, and said clamping arm is operative to clamp the closure member before the closed position. 17. The clamping device according to claim 1, wherein the bearing member is fixed on a base of a machine tool for clamping the part to be machined.