Positioning and assembling device for threaded connection structure

Abstract

The present invention discloses a positioning and assembly device for a threaded connection structure, which is placed at a bottom shell and connected to a connection structure, wherein a plurality of contact posts are provided on the back of the connection structure, a plurality of screw holes corresponding to the contact posts are provided on the back of the bottom shell, and self-tapping screws matching the contact posts are passed through the screw holes. The screw holes of the bottom shell are circumferentially expanded, and a limiting structure is fixed in the bracket groove, which includes a block, which is fixed at the end of the screw hole and flush with the surface of the bottom shell. The bottom of the block is provided with an annular base that passes through from top to bottom, and the radial dimension of the annular base is smaller than the radial dimension of the bracket groove to form a circumferential space surplus groove. The present invention circumferentially expands the screw holes of the bottom shell, and the radial dimension of the annular base in the limiting structure is smaller than the radial dimension of the bracket groove to form a circumferential space surplus, thereby forming a trial and error space due to skewed screw insertion, so that when the screw is screwed in skewly and the position is not correct, it can further avoid damage to the contact posts at the connection.

Description

Technical Field

[0001] The invention relates to the field of threaded assembly, in particular to a positioning and assembling device for a threaded connection structure. Background Art

[0002] Threaded connections are commonly used in a variety of industrial products and equipment. Typical single-position threaded connections are subject to uncontrollable factors during the mechanical tightening process. For example, high tightening torque can cause the contact pins in the connection device or the structure to which it is connected to to become detached or cracked, leading to contact pin failure and poor thread locking, requiring screw removal and reassembly. Furthermore, self-tapping screws can easily break during the tightening process, becoming impossible to remove from the screw hole.

[0003] This case was created to solve the above problems. Summary of the Invention

[0004] Technical problems solved

[0005] The present invention is to overcome the existing problems and to solve the problems raised in the above background technology.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a threaded connection structure positioning and assembly device is placed at the bottom shell and connected to the connection structure, wherein a plurality of contact posts are opened on the back of the connection structure, and a plurality of screw holes corresponding to the contact posts are opened on the back of the bottom shell, and self-tapping screws matching the contact posts are passed through the screw holes, and the screw holes are circumferentially expanded at the screw holes of the bottom shell, and a limiting structure is fixed in the expanded groove. The limiting structure includes a block, which is fixed at the screw hole port and flush with the surface of the bottom shell. The bottom of the block is provided with an annular base that passes through from top to bottom, and the radial dimension of the annular base is smaller than the radial dimension of the expanded groove to form a circumferential space surplus, forming a trial and error space due to the skewed self-tapping screws being screwed in, and a plurality of through grooves are opened circumferentially on the annular base, and an internal thread groove is opened at the bottom of the annular base.

[0008] As a preferred solution, further, the through groove includes a first long groove and a second long groove, and the first long groove and the second long groove are arranged alternately and have a size difference.

[0009] As a preferred solution, further, the sum of the transverse dimensions of the long slot one and the long slot two is greater than the radial dimension of the self-tapping screw, so that the self-tapping screw can directly pass through the long slot two or the long slot one when it deflects into the slot.

[0010] As a preferred solution, further, the side wall width of the annular base adjacent to the second long groove and the first long groove is small, and can be deformed when subjected to force.

[0011] As a preferred solution, further, a rotating block is connected to the top of the annular base, a receiving groove for receiving the rotating block is provided on the block, and an extension groove is provided in the vertical direction of the receiving groove, so that the rotating block can be placed in the extension groove when rotating and cannot escape upward.

[0012] As a preferred solution, further, a plurality of limiting slots are opened on the side edge of the bottom of the annular base, and limiting blocks are provided inside the corresponding screw holes of the bottom shell to limit the bottom of the annular base after being circumferentially inserted into the limiting slots.

[0013] Beneficial effects

[0014] Compared with the existing technology, the above technical solution has the following beneficial effects:

[0015] The present invention provides a positioning and assembly device for a threaded connection structure, wherein the screw hole of the bottom shell is circumferentially expanded, and the radial size of the annular base in the limiting structure is smaller than the radial size of the expanded slot to form a circumferential space surplus, thereby forming a trial and error space for screwing in a skewed screw, so that when the screw is screwed in skewed and the position is not correct, damage to the contact column at the connection can be further avoided.

[0016] The present invention provides a positioning and assembly device for a threaded connection structure. A accommodating groove for accommodating a rotating block is provided on a table block of a limiting structure, and an extension groove is provided in the vertical direction of the accommodating groove, so that the rotating block can be placed in the extension groove when it is slightly rotated and cannot fall out upward. After the rotating block is facing the accommodating groove, it can be completely taken out, thereby forming a larger space at the screw stuck position to a great extent, making it easier to remove the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an assembly diagram of the present invention;

[0018] Figure 2 Schematic diagram of the limiting structure in the present invention;

[0019] Figure 3 This is a schematic diagram of the disassembly of the limiting structure in the present invention;

[0020] Figure 4 Schematic top view of the limiting structure in the present invention;

[0021] Figure 5 It is a schematic diagram of the improvement of the limiting structure in the present invention.

[0022] In the figure: 1. bottom shell; 2. connection structure; 3. contact column; 4. expansion slot; 5. self-tapping screw; 6. limiting structure; 7. platform block; 8. annular base; 9. internal thread groove; 10. long slot 1; 11. long slot 2; 12. rotating block; 13. accommodating slot; 14. extension slot; 15. limiting slot; 16. limiting block. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0024] like Figure 1-2 As shown, a threaded connection structure positioning and assembly device provided by an embodiment of the present invention is placed at a bottom shell (i.e., the single positioning surface threaded connection device mentioned in the background technology) 1 and connected to a connection structure 2, wherein a plurality of contact posts 3 (with thread grooves provided therein) are provided on the back of the connection structure 2, and a plurality of screw holes corresponding one to one with the contact posts 3 are provided on the back of the bottom shell 1, and self-tapping screws 5 matching the contact posts 3 are passed through the screw holes.

[0025] This solution mainly improves the screw holes of the bottom shell 1 to overcome the problems of the self-tapping screws 5 being unable to be removed due to breakage during the locking process and the screws being locked at an angle.

[0026] Specifically, the original screw hole of the bottom shell 1 is circumferentially expanded into a groove 4, and a limiting structure 6 is fixed. The limiting structure 6 includes a block 7, which is fixed at the screw hole port and flush with the surface of the bottom shell 1. The bottom of the block 7 is provided with an annular base 8 that passes through from top to bottom. The radial dimension of the annular base 8 is smaller than the radial dimension of the expanded groove to form a circumferential space surplus, forming a trial and error space for screwing in skewed self-tapping screws.

[0027] The bottom of the annular base 8 is provided with an internal thread groove 9, which is the thread groove of the screw hole transferred to the bottom of the base. The bottom of the annular base 8 is directly opposite the contact post 3 of the connecting structure 2. After the self-tapping screw 5 enters the bottom of the annular base 8, it can also directly enter the contact post 3 of the connecting structure 2. In other words, the position of the block 7 is fixed, and the thread groove of the bottom of the annular base 8 can accurately match the corresponding contact post 3, providing a good guiding effect.

[0028] The annular base 8 is circumferentially formed with a plurality of long slots 10 and 2 slots 11, which are arranged in a staggered pattern with varying dimensions. The transverse dimensions of the long slots 10 and 2 slots 11 are greater than the radial dimensions of the self-tapping screw 5, allowing it to fit within the aforementioned trial-and-error space. It should be noted that the formation of the long slots 2 11 and 10 results in relatively thinner sidewalls of the annular base 8 in adjacent locations (the central sidewalls may also be made of a deformable material), allowing them to deform under load, allowing the screw to pass directly through the long slots 2 11 or 10 if it enters at an angle.

[0029] Since most screws produced by screw manufacturers contain some non-standard special-shaped screws such as burrs, flat heads, impurities, etc., the presence of special-shaped screws may cause the screws to become stuck. The structure of the annular base 8 and the design of the trial-and-error space can prevent the self-tapping screw 5 from damaging the connection structure 2 at the joint when it is screwed into the wrong position due to skew.

[0030] Secondly, when the self-tapping screw 5 is screwed in and deflected or broken, it is not easy to take out. Figure 3-4 As shown, the annular base 8 adopts a detachable design. Specifically, a rotating block 12 is connected to the top of the annular base 8, and a receiving groove 13 for receiving the rotating block 12 is provided on the block 7, and an extension groove 14 is provided in the vertical direction of the receiving groove 13, so that the rotating block 12 can be placed in the extension groove 14 when it is slightly rotated and cannot be removed upward (that is, the receiving groove 13 is used as the upper end stuck position), and the rotating block 12 can be taken out as a whole after it is facing the receiving groove 13, thereby forming a larger space at the stuck position of the self-tapping screw 5 to a great extent, making it easier to remove the self-tapping screw 5.

[0031] The annular base 8 is designed to be detachable, so even if cracks are formed during the process of tightening the self-tapping screws 5, it can be replaced and assembled separately.

[0032] Furthermore, since the support force at the bottom of the annular base 8 is weak (the opening of the long groove 11 and the long groove 10 causes the side wall to deform and the support is not strong enough), the bottom of the annular base 8 will also rotate slightly when the self-tapping screw 5 is screwed in. Therefore, see the attached Figure 5 As shown, a plurality of limiting notches 15 are provided on the bottom side of the annular base 8, and limiting blocks 16 are provided inside the corresponding screw holes of the bottom shell 1 to circumferentially limit the bottom of the annular base 8. Considering the slight rotation limit of the annular base 8, the limiting notches 15 can be set slightly larger.

[0033] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A threaded connection structure positioning assembly device, placed on a bottom shell and connected to a connection structure, wherein the connection structure is provided with a plurality of contact posts on the back side, and the bottom shell is provided with a plurality of screw holes on the back side corresponding to the contact posts, and self-tapping screws that cooperate with the contact posts are inserted into the screw holes, characterized in that: The screw hole of the bottom shell is circumferentially expanded, and a limiting structure is fixed in the expanded groove. The limiting structure includes a block, which is fixed at the screw hole port and flush with the surface of the bottom shell. The bottom of the block is provided with an annular base that passes through from top to bottom. The radial dimension of the annular base is smaller than the radial dimension of the expanded groove to form a circumferential space surplus, forming a trial and error space for screwing in skewed self-tapping screws. A plurality of through grooves are opened circumferentially on the annular base, and an internal thread groove is opened at the bottom of the annular base.

2. A threaded connection structure positioning and assembly device according to claim 1, characterized in that: The through slot includes a first long slot and a second long slot, and the first long slot and the second long slot are arranged alternately and have a size difference.

3. A threaded connection structure positioning and assembly device according to claim 2, characterized in that: The sum of the transverse dimensions of the long slot 1 and the long slot 2 is greater than the radial dimension of the self-tapping screw, so that the self-tapping screw can directly pass through the long slot 2 or the long slot 1 when it deflects into the slot.

4. A threaded connection structure positioning and assembly device according to claim 2, characterized in that: The side wall width of the annular base at the adjacent portion of the second long groove and the first long groove is small and can be deformed when subjected to force.

5. The threaded connection structure positioning and assembly device according to claim 1, characterized in that: The top of the annular base is connected to a rotating block, a receiving groove for receiving the rotating block is provided on the block, and an extension groove is provided in the vertical direction of the receiving groove. When the rotating block rotates, it can be placed in the extension groove and cannot escape upward.

6. The threaded connection structure positioning and assembly device according to claim 1, characterized in that: A plurality of limiting slots are provided on the side edge of the bottom of the annular base, and limiting blocks are provided inside the corresponding screw holes of the bottom shell, which are circumferentially inserted into the limiting slots to limit the bottom of the annular base.

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