Assembly method of positioning device

Abstract

This invention relates to a method for assembling a positioning device, comprising the following steps: assembling the locking part of the positioning seat into the receiving cavity of the base; placing the elastic element on the rod of the fixing member and inserting the first positioning end into the positioning hole; then inserting the rod of the fixing member into the channel of the positioning seat and the second positioning end into the positioning seat to form a fixation, and pre-twisting the elastic element by a predetermined angle; subsequently, inserting the positioning rod laterally into the two fixing grooves of the cover and the through groove of the fixing member to form a positioning; providing a positioning fixture with a die hole inside, and positioning the plate at the die hole opening; inserting the cover of the positioning device into the through hole located on the plate, with the assembly part of the base located above the plate; driving the stamping head to strike the surface of the assembly part, causing the assembly part to sink and rivet into the plate.

Claims

1. A method for assembling a positioning device, comprising the following steps: S1. Aligning the locking part of the positioning seat with the receiving cavity of the base from top to bottom, placing the elastic element outside the rod of the fixing element, and inserting the first positioning end into the positioning hole of the stop of the fixing element, then inserting the rod of the fixing element into the channel of the positioning seat, and inserting the second positioning end of the elastic element into the positioning groove of the positioning seat to form a fixation, and pre-twisting the elastic element by a predetermined angle to store the kinetic energy for torsional reset; S2. Continuing to insert the positioning rod into the two fixing grooves of the cover and the through groove of the fixing element to form a positioning, thereby completing the assembly of the positioning device; S3. Providing a positioning fixture with a mold hole inside, and positioning a plate with a through hole inside at the opening of the mold hole of the positioning fixture; S4. Insert the cover of the positioning device, which is inverted, into the through hole of the plate from top to bottom, and hold it against the wall of the die hole through the guide part outside the base. The assembly part on the free side of the base is located above the through hole of the plate. S5. Drive the punch head of the stamping fixture to strike the surface of the assembly part of the base downward, so that the assembly part of the base sinks and rivets into the plate. After the punch head is reset upward, the final assembled product of the positioning device and the plate is obtained.

2. The method for assembling the positioning device as described in claim 1, wherein in step S1, the predetermined angle to which the elastic element is pre-twisted is 270 degrees.

3. The assembly method of the positioning device as described in claim 1, wherein between steps S1 and S2, step S11 is further included, in which the assembly angle is confirmed by the relative position of the anti-rotation surface formed by cutting through the side of the base and the limiting groove of the positioning seat.

4. The method for assembling the positioning device as described in claim 1, wherein at least one guide structure is formed in the recessed outer wall surface of the column extending upward from the locking portion of the positioning seat, the guide structure including a first positioning wall, a guide arc portion and a second positioning wall, a receiving groove and a channel in a communicating manner are formed in the locking portion and the interior of the column, and a limiting groove perpendicular to the channel is formed in the recessed top surface of the column.

5. The method for assembling the positioning device as described in claim 4, wherein the locking part of the positioning seat is composed of a plurality of protrusions and a plurality of grooves interlaced, and the guiding structure is a circumferential groove on the outer wall surface of the column, wherein a first positioning wall and a second positioning wall are formed on each side of the groove and a guide arc is formed between the two, and the first positioning wall and the second positioning wall are set at angles that differ by 90 degrees.

6. The method for assembling the positioning device as described in claim 1, wherein the rod of the fixing member has a through groove for the positioning rod to pass through, the rod extends downward to a cylindrical stop, and the stop extends downward to a T-shaped positioning body, and the positioning body forms locking portions on both sides.

7. The method of assembling the positioning device as claimed in claim 1, wherein the cover has a receiving chamber inside and two fixing grooves are formed on the side for the positioning rod to pass through and be positioned, and at least one end of the positioning rod is riveted to the fixing groove by stamping, and at least one abutting rib is formed on the inner wall of the receiving chamber to contact the guide structure of the positioning seat.

8. The assembly method of the positioning device as described in claim 1, wherein the diameter of the assembly part of the base is larger than the diameter of the mold hole of the positioning fixture; the diameter of the mold hole is larger than the diameter of the guide part of the base; and the diameter of the guide part is larger than the diameter of the top surface of the cover.

9. The method for assembling the positioning device as claimed in claim 1, wherein the stamping head has a through groove inside for receiving the positioning body of the fixing member during stamping, and the diameter of the through groove is greater than the length of the positioning body.

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