Quick clamping mechanism

Abstract

The utility model relates to the field of miter saws, in particular to a quick clamping mechanism which comprises a supporting rod, a cross beam, a knob, a bowl-shaped pressing plate, an eccentric knob, an eccentric shaft, a sliding block and a pressing plate, the supporting rod is arranged on the left side of the cross beam in a sliding mode, an eccentric half screw hole is formed in the right side of the cross beam, and the pressing plate is fixed at the lower end of the cross beam. A screw part of the knob penetrates through the eccentric screw hole and a guide hole of the pressing plate and then is connected with the bowl-shaped pressing plate, the eccentric knob is rotationally connected to the cross beam, an eccentric hole is formed in the left side of the sliding block, an opening hole matched with the eccentric half screw hole is formed in the right side of the sliding block, and the eccentric shaft upwards penetrates through the eccentric hole and then is connected with the lower end of the eccentric knob. The sliding block is pushed in a matched mode through the eccentric rotary knob, the threaded rod of the rotary knob is disengaged from the threaded hole in the cross beam, the threaded rod can rapidly slide up and down to achieve stroke adjustment, the process of screwing the threaded rod is completely shortened, the action is simple and rapid, and user operation is rapid and convenient.

Description

Technical Field

[0001] The utility model relates to the field of miter saws and particularly to a quick clamping mechanism. Background Art

[0002] The miter saw table is positioned on the base and can rotate around the center of the base. The table is coplanar with the upper surface of the base, and the workpiece is placed on it. A longer screw is installed on the knob on the workpiece clamp assembly. The workpiece must be fixed by the workpiece clamp assembly before cutting. In actual application, depending on the height of the workpiece, the screw needs to be rotated down to ensure that the bowl-shaped pressure plate presses the workpiece. In the above structural scheme, for workpieces of different thicknesses, the user needs to adjust the height by rotating the knob with the screw. Compared with the thickness of the workpiece, the pitch value of the screw is very small, and the user needs to turn the knob many times to press the workpiece, which has low adjustment efficiency and is troublesome to use.

[0003] Therefore, in order to solve the deficiencies in the prior art, a quick-clamping mechanism with a simple structure needs to be designed. Utility Model Content

[0004] The utility model provides a quick clamping mechanism to solve the problems of the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a quick clamping mechanism includes: a support rod, a cross beam, a knob, a bowl-shaped pressure plate, an eccentric knob, an eccentric shaft, a slider and a pressure plate, the support rod is slidably arranged on the left side of the cross beam, an eccentric half screw hole is arranged on the right side of the cross beam, the pressure plate is fixed to the lower end of the cross beam, the screw portion of the knob passes through the eccentric screw hole and the guide hole of the pressure plate and is connected to the bowl-shaped pressure plate, the eccentric knob is rotatably connected to the cross beam, an eccentric hole is arranged on the left side of the slider, an opening hole matching the eccentric half screw hole is arranged on the right side of the slider, the eccentric shaft passes through the eccentric hole upward and is connected to the lower end of the eccentric knob, and the lower end of the eccentric shaft is rotatably arranged on the pressure plate.

[0006] As a further improvement, the eccentric knob is provided with a rotating dial head.

[0007] As a further improvement, the eccentric knob is provided with a screw 1, and the screw 1 passes through the cross beam and is connected to the eccentric shaft.

[0008] As a further improvement, the pressure plate is fixedly connected to the cross beam by two sets of countersunk screws.

[0009] As a further improvement, the bowl-shaped pressure plate is fixedly connected to the bottom thread of the knob screw portion by screw 2.

[0010] Compared with the prior art, the quick clamping mechanism of the utility model has the following beneficial effects:

[0011] By turning the eccentric knob in conjunction with the slider, the screw of the knob is disengaged from the threaded hole in the crossbeam, allowing the screw to quickly slide up and down to achieve stroke adjustment until the pressure plate can directly contact the workpiece, thereby achieving the purpose of quickly completing the stroke adjustment. The eccentric knob is then turned in conjunction with the slider to make the screw fit with the threaded hole, and the screw is tightened to enable the pressure plate to press the workpiece, completely shortening the process of tightening the screw. The action is simple and quick, and the user's operation is quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the structure processed by the utility model

[0013] Figure 2 This is a schematic diagram of the structure of the utility model

[0014] Figure 3 This is a structural diagram of the explosion diagram of the utility model

[0015] Figure 4 This is a schematic diagram of the structure of the cross-sectional view of the utility model

[0016] Figure 5 This is a structural diagram of a local position of the utility model

[0017] Figure 6 This is a structural diagram of the second local position of the utility model

[0018] In the figure, 1-support rod, 2-cross beam, 21-eccentric half screw hole, 3-knob, 31-screw part, 4-bowl-shaped pressure plate, 5-eccentric knob, 51-screw one, 52-turning dial head, 6-screw two, 7-eccentric shaft, 8-slider, 81-eccentric hole, 82-opening hole, 9-pressure plate, 91-guide hole, 92-countersunk screw. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The following is combined with the embodiments and attached Figures 1 to 6 , the technical solution of the utility model is further elaborated.

[0022] Example 1

[0023] A quick clamping mechanism comprises: a support rod 1, a cross beam 2, a knob 3, a bowl-shaped pressure plate 4, an eccentric knob 5, an eccentric shaft 7, a slider 8 and a pressure plate 9, wherein the support rod 1 is slidably arranged on the left side of the cross beam 2, an eccentric half screw hole 21 is arranged on the right side of the cross beam 2, the pressure plate 9 is fixed to the lower end of the cross beam 2, the screw portion 31 of the knob 3 passes through the eccentric screw hole 21 and the guide hole 91 of the pressure plate 9 and then connects to the bowl-shaped pressure plate 4, the eccentric knob 5 is rotatably connected to the cross beam 2, an eccentric hole 81 is arranged on the left side of the slider 8, an opening hole 82 matching the eccentric half screw hole 21 is arranged on the right side of the slider 8, the eccentric shaft 7 passes upward through the eccentric hole 81 and then is connected to the lower end of the eccentric knob 5, and the lower end of the eccentric shaft 7 is rotatably arranged on the pressure plate 9.

[0024] As a further preferred embodiment, the eccentric knob 5 is provided with a rotating dial 52 to facilitate observation of the state of the eccentric knob 5 .

[0025] As a further preferred embodiment, the eccentric knob 5 is provided with a screw 51 , and the screw 51 passes through the cross beam 2 and is connected to the eccentric shaft 7 .

[0026] As a further preferred embodiment, the pressure plate 9 is fixedly connected to the crossbeam 2 by two sets of countersunk screws 92 .

[0027] As a further preferred embodiment, the bowl-shaped pressure plate 4 is fixedly connected to the bottom thread of the screw portion 31 of the knob 3 by means of a screw 2 6 .

[0028] like Figure 1 to Figure 6 As shown, the use principle of the utility model is as follows: the support rod 1 passes through the hole on the left side of the beam 2, the eccentric shaft 7 passes through the eccentric hole 81 of the slider 8, the hole on the left side of the beam 2 and is fixed in the hole of the eccentric knob 5 by screw 1 51, the eccentric shaft 7 and the eccentric knob 5 cannot rotate relative to each other, and the lower end of the eccentric shaft 7 is positioned in the hole of the pressure plate 9. The screw portion 31 of the knob 3 passes through the eccentric semi-screw hole 21 on the right side of the beam 2, the opening hole 82 of the slider 8 and the hole of the pressure plate 9, the bowl-shaped pressure plate 4 is suspended at the end of the knob 3 by screw 2 6, the slider 8 is placed in the beam 2, and the pressure plate 9 is fixed in the beam 2 by two countersunk screws 92.

[0029] Rotate the eccentric knob 5 and point it towards the support rod 1. At this time, the screw on the knob 3 disengages the thread of the eccentric half screw hole 21 of the beam, and the bowl-shaped pressure plate 4 connected to the lower end of the screw on the knob 3 automatically falls on the wooden board; rotate the eccentric knob 5 and point it towards the knob 3, the eccentric shaft 7 pushes the slider 8 to move right in the beam 2, and pushes the screw of the knob 3 through the opening hole to passively engage with the thread of the eccentric half screw hole 21 of the beam. Rotate the screw of the knob 3 and tighten the knob 3. At this time, the bowl-shaped pressure plate 4 presses the wooden board, and the user achieves the purpose of fixing the wooden board through the workpiece clamp.

[0030] By turning the eccentric knob in conjunction with the slider, the screw of the knob is disengaged from the threaded hole in the crossbeam, allowing the screw to quickly slide up and down to achieve stroke adjustment until the pressure plate can directly contact the workpiece, thereby achieving the purpose of quickly completing the stroke adjustment. The eccentric knob is then turned in conjunction with the slider to make the screw fit with the threaded hole, and the screw is tightened to enable the pressure plate to press the workpiece, completely shortening the process of tightening the screw. The action is simple and quick, and the user's operation is quick and convenient.

[0031] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A quick clamping mechanism, characterized in that: include: A support rod, a crossbeam, a knob, a bowl-shaped pressure plate, an eccentric knob, an eccentric shaft, a slider and a pressure plate, wherein the support rod is slidably arranged on the left side of the crossbeam, an eccentric half screw hole is arranged on the right side of the crossbeam, the pressure plate is fixed to the lower end of the crossbeam, the screw portion of the knob passes through the eccentric screw hole and the guide hole of the pressure plate and is connected to the bowl-shaped pressure plate, the eccentric knob is rotatably connected to the crossbeam, an eccentric hole is arranged on the left side of the slider, an opening hole matching the eccentric half screw hole is arranged on the right side of the slider, the eccentric shaft passes through the eccentric hole upward and is connected to the lower end of the eccentric knob, and the lower end of the eccentric shaft is rotatably arranged on the pressure plate.

2. A quick clamping mechanism according to claim 1, characterized in that: The eccentric knob is provided with a rotating dial head.

3. A quick clamping mechanism according to claim 1, characterized in that: The eccentric knob is provided with a screw 1, and the screw 1 passes through the cross beam and is connected to the eccentric shaft.

4. A quick clamping mechanism according to claim 1, characterized in that: The pressing plate is fixedly connected to the cross beam by two groups of countersunk screws.

5. A quick clamping mechanism according to claim 1, characterized in that: The bowl-shaped pressing plate is fixedly connected with the bottom thread of the knob screw part by screw 2.

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