CN204869112U - Tiger's mouth clamp - Google Patents

Abstract

The utility model provides a tiger's mouth clamp, belong to the hand tool field, when changing the stuff position for the solution, the problem that wastes time and energy, this clip includes the last arm lock in same plane, the connecting rod, lower arm lock, handle and connection piece, the focus of last arm lock and the focus distribution of lower arm lock same one side at the axis of connecting rod, the focus and the opposite side of connection piece distribution at the axis of connecting rod of handle, it connects through the pivot to go up arm lock and connecting rod, connect through the pivot with the one end and the handle of connecting rod connection on going up the arm lock, connect through the pivot with the one end of last arm lock connection and the one end of connection piece on the handle, the other end and the lug on the connecting rod of connection piece are connected through the pivot, when using tiger's mouth clamp to change the stuff position, light laborsaving, the time spent is few, and the centre gripping is stable accurate.

Description

Tiger mouth clip

technical field

The utility model belongs to the field of hand tools, in particular to a tiger-mouth-shaped clip.

Background technique

When a master woodworker uses a circular saw on a woodworking planer to saw wood, in order to ensure that the sawn surface of the wood has a better flatness and obtain a certain thickness of wood, the master woodworker will use a wood with high straightness on the side opposite to the side of the circular saw. As the guide rail surface of the sawn wood running on the woodworking planer, the surface of the wood strip opposite to the side of the circular saw and the side of the circular saw are parallel to each other, and the distance between the surface of the wood strip opposite to the side of the circular saw and the side of the circular saw is the desired distance. According to the thickness of the wood, the wood to be sawed will run in a straight line against the side of the wood strip and the work surface of the woodworking planer. In order to ensure that the wood strip is stationary relative to the work surface of the woodworking planer, the woodworker will use the tiger jaw clamp to clamp the wood strip on the work surface. The structure of the above-mentioned tiger's mouth clamp includes a clamping block with a tiger's mouth, and clamping bolts for clamping the wooden strip on the work surface of the woodworking planer are installed on the clamping block. Since the clamping block of the tiger's mouth clamp is a rigid solid, each Once the position of the wooden bar is changed, the clamping bolt must be loosened first, and then the clamping bolt is tightened after changing the position, so it is time-consuming and labor-intensive.

Contents of the invention

In order to solve the time-consuming and labor-intensive problem of replacing the position of the wooden bar described in the background technology, the utility model provides a tiger-mouth-shaped clip.

The technical solution adopted by the utility model to solve the problems of the technologies described above is:

A tiger-mouth-shaped clip, including an upper clamp arm, a connecting rod, a lower clamp arm, a handle and a connecting piece, the upper clamping arm, connecting rod, lower clamping arm, handle and connecting piece are in the same plane, and this plane is the first plane The center of gravity of the upper clamp arm and the center of gravity of the lower clamp arm are distributed on the same side of the axis of the connecting rod, the center of gravity of the handle and the connecting piece are distributed on the other side of the axis of the connecting rod, and one end of the upper clamp arm and one end of the connecting rod pass through One end of the upper clamping arm and the connecting rod is connected to the handle through a rotating shaft, one end of the handle connected to the upper clamping arm is connected to one end of the connecting piece through a rotating shaft, and the other end of the connecting piece is connected to the lug on the connecting rod through a rotating shaft. Rotating shaft connection, characterized in that: the axes of the rotating shafts are parallel to each other and perpendicular to the first plane; when the upper clamping arm is closed under the handle, the axis of the rotating shaft connected to the upper clamping arm and the handle, the handle and the connecting piece are connected The axis of the rotating shaft and the axis of the rotating shaft connected by the lug on the connecting piece and the connecting rod are in the same second plane perpendicular to the first plane; the end of the upper clamping arm not connected with the connecting rod is provided with an internal thread A through hole, the axis of the through hole is perpendicular to the axis of the shaft connecting the upper clamp arm and the handle, and when the upper clamp arm is closed under the drive of the handle, the axis of the through hole is parallel to the axis of the connecting rod.

The through hole is provided with a clamping bolt matched with it; each end of the lower clamp arm is provided with a through hole, and the axes of the two through holes are parallel to each other and parallel to or coincident with the axis of the connecting rod; The inner wall of the hole is smooth, and a through hole has an internal thread; one end of the lower clamp arm is provided with a smooth through hole, and a counterbore is provided, and the axis of the counterbore is perpendicular to the first plane and is in line with the smooth through hole. The axes intersect vertically, the counterbore and the smooth through hole intersect perpendicularly; the inner wall of the counterbore is provided with internal threads; the connecting rod passes through the smooth through hole on the inner wall, and the fixing screw passes through the counterbore and contacts the connecting rod, in order to fix the lower clamp arm On the connecting rod, the fixed screw rod squeezes the connecting rod by cooperating with the internal thread on the counterbore, and the axes of the through holes with internal threads on the upper clamp arm and the lower clamp arm coincide with each other when the upper clamp arm is closed; the lower clamp arm The through hole with the internal thread on the arm is provided with a clamping bolt matched with it, and the bolt head of the clamping bolt on the lower clamping arm points to the upper clamping arm. The inner wall is smooth and the diameter of the through hole is equal to the diameter of the connecting rod. The stud of the clamping bolt is also provided with a positioning nut, and the positioning nut is located between the bolt head and the through hole. The bolt head of the clamping bolt on the upper clamping arm points to the lower clamping arm. The lug is in the first plane and the lug is fixed on the connecting rod, and the lug and the handle are on the same side of the axis of the connecting rod.

The beneficial effects of the utility model are: when changing the position of the wooden bar, it is easy and labor-saving, takes less time, and the clamping is stable and accurate.

Description of drawings

Fig. 1 is the front view of tiger's mouth shape clip;

Figure 2 is a top view of the tiger's mouth clip.

Wherein, 1 is an upper clamping arm, 2 is a connecting rod, 3 is a lower clamping arm, 4 is a handle, 5 is a connecting piece, 6 is a fixing screw rod, 7 and 9 are clamping bolts, and 8 and 10 are positioning nuts.

Detailed ways

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

As shown in FIG. 1 , the tiger-mouth-shaped clamp includes an upper clamping arm 1 , a connecting rod 2 , a lower clamping arm 3 , a handle 4 and a connecting piece 5 . The connecting rod 2 is a cylinder with a groove at one end, and the groove is perpendicular to the end face of the connecting rod 2 . The upper clamp arm 1, the connecting rod 2, the lower clamp arm 3, the handle 4 and the connecting piece 5 are in the same plane, which is the first plane; wherein, the center of gravity of the upper clamp arm 1 and the center of gravity of the lower clamp arm 3 are distributed in On the same side of the axis of the connecting rod 2 , the center of gravity of the handle 4 and the connecting piece 5 are distributed on the other side of the axis of the connecting rod 2 . In order to ensure mutual rotation between the upper clamp arm 1 and the connecting rod 2, one end of the upper clamp arm 1 and one end of the connecting rod 2 are connected by a rotating shaft, the axis of the rotating shaft is perpendicular to the axis of the connecting rod 2 and the axis of the rotating shaft is parallel to the first The plane is vertical. In order to ensure mutual rotation between the upper clamp arm 1 and the handle 4, one end of the upper clamp arm 1 and the connecting rod 2 is connected to the handle 4 through a rotating shaft. In order to ensure mutual rotation between the handle 4 and the connecting piece 5, the handle 4 One end connected to the upper clamp arm 1 is connected to one end of the connecting piece 5 through a rotating shaft. In order to ensure mutual rotation between the connecting piece 5 and the connecting rod 2, the other end of the connecting piece 5 is connected to the lug on the connecting rod 2 through a rotating shaft. , the lug is in the first plane and the lug is fixed on the connecting rod 2 , and the lug and the handle 4 are on the same side of the axis of the connecting rod 2 . In order to ensure that the upper clamp arm 1, the connecting rod 2, the lower clamp arm 3, the handle 4 and the connecting piece 5 rotate stably, continuously and without interference, the axis of the shaft connecting the upper clamp arm 1 and the connecting rod 2, the upper clamp The axis of the shaft connecting the arm 1 to the handle 4, the axis of the shaft connecting the handle 4 to the connecting piece 5, and the axis of the shaft connecting the connecting piece 5 to the lug on the connecting rod 2 are parallel to each other and perpendicular to the first plane.

It is known from Ft=Fcosα that when the pressure angle α=90°, the force or moment on the follower is zero, and the connecting rod cannot drive the follower to work at this time. The mechanism is in this position and becomes the dead point, also known as the dead point. When the upper clamping arm 1 is closed under the drive of the handle 4, in order to prevent the upper clamping arm 1 from rotating, the axis of the rotating shaft connected by the upper clamping arm 1 and the handle 4, the axis of the rotating shaft connected by the handle 4 and the connecting piece 5, and the connecting piece 5 and The axis of the rotating shaft connected by the lug on the connecting rod 2 is in the same second plane perpendicular to the first plane.

An end of the upper clamp arm 1 that is not connected with the connecting rod 2 is provided with a through hole with an internal thread, the axis of the through hole is perpendicular to the axis of the rotating shaft that the upper clamp arm 1 and the handle 4 are connected to, and when the upper clamp arm 1 is in the When the handle 4 is driven to close, the axis of the through hole is parallel to the axis of the connecting rod 2 . The through hole is provided with a clamping bolt 7 matched with it, and the bolt head of the clamping bolt 7 points to the lower clamping arm 3 . A positioning nut 8 is also provided on the stud of the clamping bolt 7, and the positioning nut 8 is located between the bolt head and the through hole.

Both ends of the lower clamp arm 3 are respectively provided with a through hole, the axes of the two through holes are parallel to each other and parallel or coincident with the axis of the connecting rod 2; thread. The inner wall is smooth and the diameter of the through hole is equal to the diameter of the connecting rod 2 . One end of the lower clamp arm 3 with a smooth through hole is also provided with a counterbore, the axis of the counterbore is perpendicular to the first plane and perpendicularly intersects with the axis of the smooth through hole, and the counterbore intersects perpendicularly with the smooth through hole ; The inner wall of the counterbore is provided with an internal thread. The connecting rod 2 is a smooth through hole passing through the inner wall, and the fixing screw 6 is in contact with the connecting rod 2 through the counterbore. In order to fix the lower clamp arm 3 on the connecting rod 2, the fixing screw 6 cooperates with the internal thread on the counterbore Squeeze the connecting rod 2, and tighten the fixing screw 6 to fix the lower clamp arm 3. The through hole with internal thread on the lower clamping arm 3 is provided with a clamping bolt 9 matched with it, and the bolt head of the clamping bolt 9 points to the upper clamping arm 1 . A positioning nut 10 is also provided on the stud of the clamping bolt 9, and the positioning nut 10 is located between the bolt head and the through hole with internal thread.

The axes of the through holes with internal threads on the upper clamp arm 1 and the lower clamp arm 3 coincide with each other when the upper clamp arm is closed. The clamping bolts 7 and 9 provided on the upper clamping arm 1 and the lower clamping arm 3 adjust the upper clamping bolts 7 and 9 by cooperating with the through holes with internal threads on the upper clamping arm 1 and the lower clamping arm 3 The distance between the bolt heads, after the distance is adjusted, fix the clamping bolts 7 and 9 with the positioning nuts 8 and 10. When the adjusted distance exceeds the maximum adjustment range of the two clamping bolts 7, 9, in order to set the distance between the bolt heads on the two clamping bolts 7, 9, first loosen the fixing screw 6, and then adjust the lower clamping arm 3 After adjusting the position on the connecting rod 2, tighten the fixing screw 6.

As shown in FIG. 2 , the part where the upper clamping arm 1 is connected to the handle 4 and the connecting rod 2 is a flat protrusion, and the corresponding position of the handle 4 and the connecting rod 2 has a groove to accommodate the protrusion of the upper clamping arm 1 . There are two connecting pieces 5, which are respectively arranged on both sides of the handle 4, and the two ends of the connecting piece 5 are respectively connected to the handle 4 and the lugs fixed on the connecting rod 2.

Claims (6)

1. A tiger-mouth-shaped clip, including an upper clamp arm (1), a connecting rod (2), a lower clamping arm (3), a handle (4) and a connecting piece (5), an upper clamping arm (1), a connecting rod ( 2), the lower clamp arm (3), the handle (4) and the connecting piece (5) are in the same plane, this plane is the first plane; the center of gravity of the upper clamp arm (1) and the center of gravity of the lower clamp arm (3) Distributed on the same side of the axis of the connecting rod (2), the center of gravity of the handle (4) and the connecting piece (5) are distributed on the other side of the axis of the connecting rod (2), one end of the upper clamp arm (1) and the connecting rod One end of (2) is connected through a rotating shaft, the upper clamping arm (1) is connected with one end of the connecting rod (2) and the handle (4) through a rotating shaft, and the end of the handle (4) connected with the upper clamping arm (1) is connected with One end of the connecting piece (5) is connected by a rotating shaft, and the other end of the connecting piece (5) and the lug on the connecting rod (2) are connected by a rotating shaft, and it is characterized in that: the axes of the rotating shafts are parallel to each other and perpendicular to the first plane; when the upper clamping arm (1) is closed under the drive of the handle (4), the axis of the shaft connecting the upper clamping arm (1) and the handle (4) and the axis of the shaft connecting the handle (4) and the connecting piece (5) The axis and the axis of the rotating shaft connected by the lug on the connecting piece (5) and the connecting rod (2) are in the same second plane perpendicular to the first plane; the upper clamping arm (1) is not connected with the connecting rod (2) There is a through hole with an internal thread on one end of it, the axis of the through hole is perpendicular to the axis of the shaft connecting the upper clamp arm (1) and the handle (4), and when the upper clamp arm (1) is on the handle (4) When driven to close, the axis of the through hole is parallel to the axis of the connecting rod (2). 2. A tiger-mouth-shaped clip according to claim 1, characterized in that: the said through hole is provided with a clamping bolt (7) matching it; both ends of the lower clamping arm (3) are respectively provided with a Through holes, the axes of the two through holes are parallel to each other and parallel or coincident with the axis of the connecting rod (2); wherein, the inner wall of one through hole is smooth, and the other through hole has internal threads; There is also a counterbore at one end of the smooth through hole, the axis of the counterbore is perpendicular to the first plane and perpendicularly intersects the axis of the smooth through hole, and the counterbore intersects the smooth through hole vertically; the inner wall of the counterbore is provided with There are internal threads; the connecting rod (2) passes through the smooth through hole on the inner wall, and the fixing screw (6) passes through the counterbore to contact the connecting rod (2), in order to fix the lower clamp arm (3) on the connecting rod (2) , the fixed screw rod (6) squeezes the connecting rod (2) by cooperating with the internal thread on the counterbore, and the axis of the through hole with internal thread on the upper clamp arm (1) and the lower clamp arm (3) is on the upper clamp When the arms are closed, they overlap each other; the through hole with internal thread on the lower clamp arm (3) is provided with a clamping bolt (9) matching it, and the bolt head of the clamping bolt (9) on the lower clamp arm (3) Point to the upper jaw (1). 3. A tiger-shaped clip according to claim 2, characterized in that the inner wall is smooth and the diameter of the through hole is equal to the diameter of the connecting rod (2). 4. A tiger-shaped clip according to claim 2, characterized in that: the studs of the clamping bolts (7, 9) are also provided with positioning nuts (8, 10), and the positioning nuts (8, 10) 10) Located between the bolt head and the through hole. 5. A tiger-mouth-shaped clamp according to claim 1, characterized in that: the bolt head of the clamping bolt (7) on the upper clamping arm (1) points to the lower clamping arm (3). 6. A tiger-shaped clip according to claim 1, characterized in that: the lug is in the first plane and the lug is fixed on the connecting rod (2), and the lug and the handle (4) are on the connecting rod (2) on the same side of the axis.