Locking pin device with positioning thread sleeve

Abstract

The utility model discloses a locking pin device with a positioning screw sleeve, which comprises the positioning screw sleeve and a locking pin component, a first pin hole with a non-circular cross section is axially arranged in the positioning screw sleeve, and a screw hole is arranged at the upper end of the positioning screw sleeve; the locking pin assembly comprises a fixed pin, a rotating pin and a handle piece, and the fixed pin is matched with the cross section of the first pin hole in shape and can be inserted into the first pin hole; the lower end of the rotating pin is fixedly connected with the handle piece, the upper end of the rotating pin is provided with a threaded column screwed and matched with the screw hole, a second pin hole is axially formed in the fixed pin, and the middle of the rotating pin is rotatably inserted into the second pin hole; a locking pin cap is arranged at the lower end of the fixing pin, and the lower end of the locking pin cap is in sliding contact with the handle piece. The cross section of the upper end of the fixing pin is non-circular and can be designed into a shape matched with a non-circular workpiece hole, so that the fixing pin can penetrate through the non-circular workpiece hole of a workpiece, a gap between the fixing pin and the non-circular workpiece hole is small, and the workpiece is firmly locked and fixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the fixed frock technical field of work piece, especially in a kind of locking pin device with positioning screw sleeve. BACKGROUND

[0002] At present, work piece is often needed to use work piece fixed frock in the process of processing;Some work pieces have work piece hole, when the work piece with work piece hole is fixed, work piece fixed frock can use the work piece hole of work piece to fix work piece;Generally, this kind of work piece fixed frock usually includes screw rod and nut, the end of screw rod has external thread, after inserting screw rod into the work piece hole of work piece, then use nut to screw on the external thread of screw rod, tighten nut, can fix work piece.But the work piece hole of some work pieces is not round hole, it can be oval hole, D-shaped hole, polygonal hole or other shape special-shaped hole, and ordinary screw rod is cylindrical screw rod, so that the shape of screw rod and the shape of work piece hole are not matched, and screw rod cannot pass through work piece hole;If the diameter of screw rod is designed to be relatively small, so that screw rod can pass through the work piece hole of work piece, then screw rod must have large gap between work piece hole of work piece, which will lead to unstable fixation of work piece. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a locking pin device with positioning screw sleeve, the upper end of the fixing pin of the locking pin assembly is non-circular in cross section, which can be designed to match the non-circular work piece hole of the work piece, so that the fixing pin can pass through the non-circular work piece hole of the work piece, and the gap between the fixing pin and the non-circular work piece hole is small, and the work piece is locked and fixed stably.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a locking pin device with positioning screw sleeve, including positioning screw sleeve and locking pin assembly, the first pin hole with non-circular cross section is arranged axially in the positioning screw sleeve, the upper end of the positioning screw sleeve is provided with a screw hole, and the screw hole is in communication with the first pin hole;The locking pin assembly includes fixing pin, rotating pin and handle, the upper end of the fixing pin is non-circular in cross section and matches the cross section shape of the first pin hole, and the upper end of the fixing pin can be inserted into the first pin hole;The lower end of the rotating pin is fixedly connected with the handle, and the upper end of the rotating pin is provided with a threaded column which is screwed with the screw hole;The second pin hole is arranged axially in the fixing pin, and the middle part of the rotating pin is rotatably inserted into the second pin hole;The lower end of the fixing pin is provided with a locking pin cap, and the lower end of the locking pin cap is in sliding contact with the handle;When the upper end of the fixing pin is inserted into the first pin hole and the threaded column is screwed with the screw hole, the upper end of the locking pin cap and the lower end of the positioning screw sleeve form a locking interval for locking the work piece.

[0005] In the above technical scheme, the upper end of the positioning screw sleeve is internally fixedly provided with a nut, and the screw hole is located in the nut.

[0006] In the above technical scheme, the first pin hole is in a "D" shape in cross section, and the upper end of the fixing pin is in a "D" shape in cross section.

[0007] In the above technical scheme, the upper end of the workpiece is axially provided with a positioning insertion hole and radially provided with a positioning screw hole, the lower end of the rotating pin is detachably inserted into the positioning insertion hole, the lower end of the rotating pin is provided with a clamping groove, the positioning screw hole is provided with a positioning screw, and the inner end of the positioning screw is in abutting positioning with the clamping groove.

[0008] In the above technical scheme, the outer side of the positioning screw sleeve is provided with a first positioning groove for positioning an external component, and the outer side of the workpiece is provided with a second positioning groove for positioning an external component.

[0009] The workpiece of the utility model has the following advantages: first, the upper end of the fixing pin is in a non-circular shape in cross section, so that the upper end of the fixing pin can pass through the non-circular workpiece hole of the workpiece and the gap between the fixing pin and the non-circular workpiece hole is small; second, the upper end of the fixing pin can be inserted into the first pin hole of the positioning screw sleeve, so that the upper end of the fixing pin can axially move in the first pin hole, and the locking interval between the upper end of the locking pin cap of the fixing pin and the lower end of the positioning screw sleeve is formed, so that the locking interval distance can be reduced or enlarged to lock or release the workpiece when the upper end of the fixing pin axially moves in the first pin hole; third, the middle part of the rotating pin is rotatably inserted into the second pin hole, the lower end of the rotating pin is fixedly connected with the workpiece, the upper end of the rotating pin is provided with a threaded column which is screw-connected with the screw hole, and the lower end of the locking pin cap is in sliding contact with the workpiece, so that the rotating pin can be rotated when the workpiece is rotated, the threaded column in the screw hole is rotated, the locking interval distance can be controlled through the screw connection between the threaded column and the screw hole, the workpiece, the rotating pin and the fixing pin are axially moved upward as a whole when the workpiece drives the rotating pin to rotate forward, so that the locking interval distance is reduced to lock the workpiece, and the workpiece, the rotating pin and the fixing pin are axially moved downward as a whole when the workpiece drives the rotating pin to rotate reversely, so that the locking interval distance is enlarged to release the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1Structure diagram of a workpiece with a non-circular workpiece hole.

[0011] Figure 2 Structure diagram of a combined state of a positioning screw sleeve and a locking pin assembly.

[0012] Figure 3 Structure diagram of a separated state of a positioning screw sleeve and a locking pin assembly.

[0013] Figure 4 Structure diagram of a first perspective view of a positioning screw sleeve and a locking pin assembly.

[0014] Figure 5 Structure diagram of a second perspective view of a positioning screw sleeve and a locking pin assembly.

[0015] Figure 6 Structure diagram of a locking workpiece process of the utility model. DETAILED DESCRIPTION

[0016] The structure principle and working principle of the utility model will be further described in detail below in combination with the drawings.

[0017] As shown in Figure 1 , it is a structure diagram of a workpiece with a non-circular workpiece hole, the workpiece 100 can be a mobile phone shell, an automobile accessory, a household appliance accessory, etc., and the product field of the workpiece 100 is not limited; the workpiece 100 has a non-circular workpiece hole 101, the non-circular workpiece hole 101 can be an elliptical hole, a polygonal hole or other special-shaped holes, in this embodiment, the non-circular workpiece hole 101 is a "D" shaped hole. The locking pin device of the utility model is used for locking and fixing the workpiece 100 with the non-circular workpiece hole 101, so that the workpiece 100 is convenient for processing.

[0018] As shown in Figures 2-5As shown, the utility model is a kind of locking pin device with positioning screw sleeve, for fixing workpiece 100 using the non-circular workpiece hole 101 of workpiece 100, the utility model includes positioning screw sleeve 1 and locking pin assembly 200, the first pin hole 11 of non-circular cross section is axially arranged in positioning screw sleeve 1, the upper end of positioning screw sleeve 1 is equipped with screw hole 12, and screw hole 12 is communicated with first pin hole 11;Locking pin assembly 200 includes fixed pin 2, rotating pin 3 and handle component 4, the upper end of fixed pin 2 is non-circular in cross-sectional shape, and is matched with the cross-sectional shape of first pin hole 11, and the upper end of fixed pin 2 can be inserted into first pin hole 11;The lower end of rotating pin 3 is fixedly connected with handle component 4, and the upper end of rotating pin 3 is equipped with threaded column 31 for screwing cooperation with screw hole 12, the second pin hole 21 is axially arranged in fixed pin 2, and the middle part of rotating pin 3 is rotatably inserted into second pin hole 21;The lower end of fixed pin 2 is equipped with locking pin cap 22, and the lower end of locking pin cap 22 is in sliding contact with handle component 4;When the upper end of fixed pin 2 is inserted into first pin hole 11 and threaded column 31 is screwed with screw hole 12, the upper end of locking pin cap 22 and the lower end of positioning screw sleeve 1 form locking interval for locking workpiece 100.

[0019] As Figure 6 As shown, the utility model locking method for fixing workpiece 100 is as follows: first, as Figure 5 (a) shown, positioning screw sleeve 1 is placed above workpiece 100, and locking pin assembly 200 is placed below workpiece 100;Then, as Figure 5 (b) shown, locking pin assembly 200 is moved upward as a whole, so that the upper end of fixed pin 2 of locking pin assembly 200 is inserted into the non-circular workpiece hole 101 of workpiece 100, and the upper end of locking pin cap 22 of fixed pin 2 is abutted on the lower side of workpiece 100;Next, as Figure 5 (c) shown, positioning screw sleeve 1 is moved downward, so that the upper end of fixed pin 2 is inserted into the first pin hole 11 of positioning screw sleeve 1;Finally, as Figure 5 (c) shown, handle component 4 is rotated forward, so that threaded column 31 of the upper end of rotating pin 3 is screwed and locked with screw hole 12 of the upper end of positioning screw sleeve 1, and positioning screw sleeve 1 and fixed pin 2 remain stationary during screwing and locking, and after screwing and locking, the upper end of locking pin cap 22 is locked with the lower end of positioning screw sleeve 1 to lock workpiece 100;The utility model unlocking method for fixing workpiece 100 is as follows: first, handle component 4 is reversely rotated, so that threaded column 31 of the upper end of rotating pin 3 is loosened downward from screw hole 12 of the upper end of positioning screw sleeve 1;Then, positioning screw sleeve 1 is moved upward, and fixed pin 2 is moved out from the upper end;Next, workpiece 100 is moved upward, and fixed pin 2 is moved out from the upper end.

[0020] The upper end cross section shape of the fixed pin 2 is non-circular, therefore, the upper end cross section shape of the fixed pin 2 can be designed into a shape matched with the non-circular workpiece hole 101 of the workpiece 100, so that the fixed pin 2 can pass through the non-circular workpiece hole 101 of the workpiece 100, and the gap between the fixed pin 2 and the non-circular workpiece hole 101 is small; the upper end cross section shape of the fixed pin 2 is matched with the cross section shape of the first pin hole 11, and the upper end of the fixed pin 2 can be inserted into the first pin hole 11 of the positioning screw sleeve 1, therefore, the upper end of the fixed pin 2 can move axially in the first pin hole 11, and because the locking pin cap 22 of the fixed pin 2 and the lower end of the positioning screw sleeve 1 form a locking interval for locking the workpiece, when the upper end of the fixed pin 2 moves axially in the first pin hole 11, the locking interval distance can be reduced or expanded to lock or release the workpiece 100; the middle part of the rotating pin 3 is rotatably inserted into the second pin hole 21, the lower end of the rotating pin 3 is fixedly connected with the handle piece 4, the upper end of the rotating pin 3 is provided with a threaded column 31 screw-connected with the screw hole 12, and the lower end of the locking pin cap 22 is in sliding contact with the handle piece 4, therefore, when the handle piece 4 is rotated, the rotating pin 3 can be driven to rotate, and then the threaded column 31 is driven to rotate in the screw hole 12, the screw connection between the threaded column 31 and the screw hole 12 can control the locking interval distance to be reduced or expanded, when the handle piece 4 drives the rotating pin 3 to rotate forward, the handle piece 4, the rotating pin 3 and the fixed pin 2 move axially upward as a whole, so that the locking interval distance is reduced to lock the workpiece 100; when the handle piece 4 drives the rotating pin 3 to rotate reversely, the handle piece 4, the rotating pin 3 and the fixed pin 2 move axially downward as a whole, so that the locking interval distance is expanded to release the workpiece 100.

[0021] As shown in Figures 2-5 The upper end of the positioning screw sleeve 1 is fixedly provided with a nut 13, and the screw hole 12 is located in the nut 13. Further, the upper end of the positioning screw sleeve 1 is provided with an internal thread 14, and the nut 13 is further provided with an external thread 131 which is screw-connected with the internal thread 14; the top of the nut 13 is further provided with a slot 132 for inserting a screwdriver. This structure can make the positioning screw sleeve 1 be made of common materials with low cost, and the nut 13 be made of materials with high strength and good durability.

[0022] As shown in Figures 2-5 The cross section shape of the first pin hole 11 is in the shape of "D", and the upper end cross section shape of the fixed pin is in the shape of "D".

[0023] As shown in Figures 2-5As shown, the upper end of the handle 4 has an axially oriented positioning hole 41 and a radially oriented positioning screw hole 42. The lower end of the rotating pin 3 is detachably inserted into the positioning hole 41. The lower end of the rotating pin 3 has a groove 32. A positioning screw (not shown in the figure) is provided inside the positioning screw hole 42. The inner end of the positioning screw abuts against the groove 32 for positioning. During assembly, first, the rotating pin 3 is inserted downward into the second pin hole 21 of the fixing pin 2; then, the lower end of the rotating pin 3 is inserted into the positioning hole 41 of the handle 4 and the groove 32 is aligned with the positioning screw hole 42; next, the positioning screw is screwed into the positioning screw hole 42 and the inner end of the positioning screw abuts against the groove 32 for positioning.

[0024] like Figures 2-5 As shown, the outer side of the positioning screw sleeve 1 is provided with a first positioning groove 15 for positioning external components, and the outer side of the handle 4 is provided with a second positioning groove 43 for positioning external components. In this embodiment, the external component is a positioning mechanism or a driving mechanism of a workpiece fixing fixture.

[0025] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A locking pin device with a positioning sleeve, characterized in that: The positioning screw sleeve is provided with a first pin hole with a non-circular cross section in the axial direction, and the upper end of the positioning screw sleeve is provided with a screw hole which is in communication with the first pin hole; the locking pin assembly comprises a fixed pin, a rotating pin and a handle, the upper end of the fixed pin has a non-circular cross section which matches the cross section of the first pin hole, and the upper end of the fixed pin can be inserted into the first pin hole; the lower end of the rotating pin is fixedly connected with the handle, and the upper end of the rotating pin is provided with a threaded column which is screwed with the screw hole, the fixed pin is provided with a second pin hole in the axial direction, and the middle part of the rotating pin is rotatably inserted into the second pin hole; the lower end of the fixed pin is provided with a locking pin cap, the lower end of the locking pin cap is in sliding contact with the handle, and when the upper end of the fixed pin is inserted into the first pin hole and the threaded column is screwed with the screw hole, the upper end of the locking pin cap and the lower end of the positioning screw sleeve form a locking interval for locking the workpiece.

2. The locking pin assembly with a positioning sleeve as claimed in claim 1, characterized in that: The upper end of the positioning screw sleeve is fixedly provided with a nut.

3. The lock pin assembly with a positioning sleeve as claimed in claim 2, characterized in that: The upper end of the positioning screw sleeve is provided with an internal thread, and the nut is also provided with an external thread which is screwed with the internal thread; the top of the nut is also provided with a slot for inserting a screwdriver.

4. The lock pin assembly with a positioning sleeve as claimed in claim 1, wherein: The cross section of the first pin hole is in the shape of "D", and the upper end of the fixed pin has a cross section in the shape of "D".

5. The lock pin assembly with a positioning sleeve as claimed in claim 1, wherein: The upper end of the handle is provided with a positioning insertion hole in the axial direction and a positioning screw hole in the radial direction, the lower end of the rotating pin is detachably inserted into the positioning insertion hole, the lower end of the rotating pin is provided with a clamping groove, the positioning screw hole is provided with a positioning screw, and the inner end of the positioning screw is in abutting positioning with the clamping groove.

6. The lock pin assembly with a positioning sleeve as claimed in any one of claims 1-5, characterized in that: The outer side of the positioning screw sleeve is provided with a first positioning slot for positioning an external component, and the outer side of the handle is provided with a second positioning slot for positioning an external component.

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