JPH0591813U - Clamp device - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the size of the components of the clamp device and reduce the number of components. A drive plate 1 pivotally mounted on a fixed plate 5 fixed to one clamped member 41 by a fulcrum pin 21, and a hook locked to a locking pin 19 fixed to the other clamped member 42. 11 and a connecting ring 16 that pivotally attaches the base of the hook 11 and is pivotally attached to the drive plate 1 between the fulcrum pin 21 and the connecting pin 25 by the drive pin 23, and is attached to the hook 11. By rotating the drive plate 1 with the fulcrum pin 21 as a fulcrum, 27 is moved to the connecting pin 25 side together with the movement to the clamped member 41 side, and is locked when the hook 11 locks the locking pin 19. Fit into the lock pin hole provided in the fixed plate 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In order to form a seat cushion for an automobile, for example, this invention has an upper frame, which is one clamped member to which an upper mold is attached, and a lower frame, which is the other clamped member to which a lower mold is attached. A device for clamping.

[0002]

[Prior Art]

 Cold-molding, different-hardness molding, and hot-molding are generally used as molding methods for automobile seat cushions. Of these, the hot-molding mold is equipped with a gas vent hole to inject a foam material such as polyurethane foam into the mold to release the gas generated during foam molding. I'm trying not to get over it.

However, in the case of hot molding, since the upper and lower molds and the entire clamp are exposed to high heat, heat distortion is likely to occur in each part of the clamp device. Therefore, the clamp device is mechanically simple but a little complicated, or it is large and complicatedly formed, and the number of component parts is large, so that it is expensive.

Further, the conventional clamp device has a drawback that the movement of the handle for clamping and unclamping is large, and the foam molding work is not efficient.

[0005]

[Problems to be solved by the device]

 The problem to be solved by this invention is to reduce the size of the components of the clamp device and to reduce the cost by reducing the number of components. Also, the movement of the handle during clamping and unclamping should be reduced to improve the efficiency of foam molding work.

[0006]

Means for Solving the Problems The present invention provides a drive plate pivotally attached to a fixed plate fixed to one clamped member by a fulcrum pin, and a base portion pivotally attached to a connecting ring by a connecting pin, and Of the clamped member, the hook being locked to the locking pin, and the connecting ring pivotally attached to the drive plate by the drive pin between the fulcrum pin and the connecting pin. Then, the lock pin attached to the hook is moved to one of the locked members side and the connecting pin side by the rotation of the drive plate around the fulcrum pin as a fulcrum, and the hook is locked to the locking pin. It is inserted into the lock hole provided in the fixed plate that locks the lock pin when the lock is locked.

[0007]

【Example】

 In this embodiment, a clamp device used in a mold for hot-molding an automobile seat cushion will be described. Of course, the clamping device of the present invention can be used to clamp other clamped members.

In FIGS. 12 and 13, reference numeral 41 is an upper frame for mounting an upper die (not shown), which is one clamped member, and 42 is a lower frame which is the other clamped member (not shown). Reference numeral 43 is a clamp device for the upper and lower frames 41 and 42, and a plurality of clamp devices are connected and simultaneously operated.

Reference numeral 1 denotes a drive plate. As shown in detail in FIG. 5, a fulcrum pin hole 2 is formed on the lower frame 42 side (left side in FIG. 5) and a drive pin hole 3 is formed on the opposite side. However, with respect to the vertical line passing through the center of the fulcrum pin hole 2, the straight line connecting the centers of the fulcrum pin hole 2 and the drive pin hole 3 is inclined 15 degrees toward the upper frame 41 side. Reference numeral 4 is a connecting member for the plurality of clamp devices 43.

As shown in detail in FIGS. 6 and 7, a fixed plate 5 has a fulcrum pin hole 6 at a position coaxial with the fulcrum pin hole 2 of the drive plate 1 and an opposite side of the fulcrum pin hole 6. An oval play hole 7 is formed in the vertical direction (horizontal direction in FIGS. 6 and 7). Reference numeral 8 denotes a lock hole, which is provided between the fulcrum pin hole 6 and the play hole 7 so as to be recessed (or penetrated) in a substantially inverted V shape. Reference numeral 9 is a connecting ring receiving recess. Reference numeral 10 denotes a fixing base, and the fixing plate 5 is fixed to the upper frame 41 by bolts inserted into the fixing base 10.

The lock hole 8 communicates with the unlocking portion 8a and the unlocking portion 8a that descends obliquely to the opposite side of the upper frame 41 (inclining to the left in FIG. 6) and the locking portion that rises vertically. 8b. Further, the intersections of the center line of the fulcrum pin hole 6, the play hole 7, and the unlock portion 8a and the center line of the lock portion 8b are on the same vertical line, and the center line of the unlock portion 8a is a horizontal line passing through the intersection points. On the contrary, it descends at 15 degrees.

8 and 9 show the hook 11. Reference numeral 12 is a connecting pin hole which is formed through the base portion, and between the locking portion 13 and the connecting pin hole 12, an oval-shaped lock pin hole 14 is formed through in the horizontal direction (vertical direction in FIG. 8). ing. Reference numeral 15 is a nut receiving recess that is recessed in the horizontal direction.

10 and 11 show the connecting ring 16. A connecting pin hole 17 and a drive pin hole 18 are provided in the connecting ring 16 side by side.

In FIG. 3, 19 is a locking pin, which is fixed to the fixed base 20. The fixed base 20 is fixed to the lower frame 42 by bolts so that the vertical position can be adjusted.

3 and 4 show the assembled state of the clamp device 43. Please refer to FIG. 5 to FIG. Reference numeral 21 denotes a fulcrum pin for pivotally attaching the drive plate 1 to the fixed plate 5, which is inserted into the fulcrum pin hole 2 of the drive plate 1 and the fulcrum pin hole 6 of the fixed plate 5, and the retaining nut 22 is screwed. ing.

Reference numeral 23 is a drive pin that pivotally connects the connecting ring 16 to the drive plate 1, and is inserted into the drive pin hole 3 of the drive plate 1 and the play hole 7 of the fixed plate 5, and the retaining nut 24 is provided. It is screwed on.

A connecting pin 25 pivotally attaches the hook 11 to the connecting ring 16, and is inserted into the connecting pin hole 17 of the connecting ring 16, the play hole 7 of the fixing plate 5, and the connecting pin hole 12 of the hook 11. The retaining nut 26 is screwed on.

Reference numeral 27 is a lock pin, which is inserted from the lock pin hole 14 of the hook 11 into the lock hole 8 of the fixing plate 5, and the position of which can be adjusted by the adjusting nut 28 fitted in the nut accommodating recess 15 of the hook 11. It is fixed to the hook 11.

Each drive plate 1 is connected by the connecting member 4 having the handle 29 attached thereto as shown in FIGS. 12 and 13, and when the handle 29 is rotated, each drive plate 1 is pivoted about the fulcrum pin 21. And rotate.

Here, in the clamped state of FIG. 1, the centers of the fulcrum pin 21, the drive pin 23, and the connecting pin 25 are on the same vertical line. In the unclamped state, as shown in FIG. 2, the drive pin 23 is deviated from the vertical line, and the line connecting the centers of the fulcrum pin 21 and the drive pin 23 is 15 degrees above the vertical line. Located close to.

Although not shown, in this embodiment, the upper frame 41 is clamped by the handle 29 so that the mold can be opened and closed together. Since the clamp and mold opening / closing can be performed with one handle, the number of components can be reduced and the manufacturing cost can be reduced.

[0022]

[Action]

 When the handle 29 is rotated downward by 15 degrees from the unlocked state of FIG. 2, the drive plate 1 is rotated upward with the fulcrum pin 21 as a fulcrum, and the drive pin 23 is also rotated upward with the fulcrum pin 21 as a fulcrum. To do. As a result, since the connecting ring 16 moves upward by the amount of upward movement of the drive pin 23, the connecting pin 25 also moves upward in the play hole 7 of the fixing plate 5, and the hook 11 also rises.

The lock pin 27 that was in the unlock portion 8a of the lock hole 8 is guided by the unlock portion 8b and rises to the upper frame 41 side. As a result, the hook 11 rises while rotating toward the lower frame 42 side with the connecting pin 25 as a fulcrum, the locking portion 13 locks the locking pin 19, and the lock pin 27 enters the lock portion 8b. The upper frame 41 is locked and clamped to the lower frame 42.

When the handle 29 is rotated upward by 15 degrees from the clamped state, the unclamping is performed as shown in FIG.

[0025]

[Effect of the device]

 By connecting the drive pin and the connection pin with the connection ring, it is possible to clamp and unclamp with a small rotation of the drive plate, so the number of parts can be reduced and the size can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic side view of a clamped state.

FIG. 2 is a schematic side view of an unclamped state.

FIG. 3 is a front view of a main part.

FIG. 4 is a cross-sectional view showing an assembled state of main parts.

FIG. 5 is a right side view of the drive plate.

FIG. 6 is a right side view of the fixing plate.

FIG. 7 is a left side view of the fixing plate.

FIG. 8 is a left side view of the hook.

9 is a cross-sectional view taken along the line AA of FIG.

FIG. 10 is a right side view of the connecting ring.

11 is a sectional view taken along line BB of FIG.

FIG. 12 is a front view showing a state in which a clamp device is attached to an upper frame and a lower frame.

FIG. 13 is a plan view showing a state in which a clamp device is attached to an upper frame and a lower frame.

[Explanation of symbols]

 1 Drive plate 5 Fixed plate 7 Play hole 8 Lock hole 11 Hook 16 Connecting ring 19 Locking pin 21 Support point pin 23 Drive pin 25 Connecting pin 27 Lock pin 41 Upper frame 42 Lower frame 43 Clamping device

Claims (1)

[Scope of utility model registration request] 1. A driving plate pivotally attached to a fixed plate fixed to one clamped member by a fulcrum pin, a hook locked to a locking pin fixed to the other clamped member, and a hook of the hook. The base part is pivotally attached by a connecting pin, and the connecting plate is pivotally attached to the drive plate between the fulcrum pin and the connecting pin by the drive pin.The lock pin attached to the hook serves as a fulcrum of the drive plate. A clamp device fitted into a lock hole provided in a fixed plate, which is moved to one of the clamped members side by rotation and is moved to the connecting pin side to be locked when the hook locks the locking pin.