Magnetically controlled axial tolerance adjustment device

Abstract

The invention relates to the field of axial tolerance adjustment devices, and discloses a magnetically controlled axial tolerance adjustment device, comprising an outer shell, a cover and a steel nail. Hooks for clamping a lower sheet metal are arranged on both sides of the outer shell, a through hole is opened inside the outer shell, and the steel nail is inserted into the through hole. The through hole consists of a first clamping slot, a second clamping slot and a third clamping slot. The bottom end of the cover is threadedly connected with an internal thread, the second clamping slot is in a conical structure, and the size of the second clamping slot matches that of a wedge block. The bottom end of the cover is inserted into the top end of the outer shell, and a plurality of wedge blocks are arranged in the through hole. A steel spring is arranged between the top end of the wedge block and the bottom end of the cover, and the bottom end of the steel spring is pressed down on the top end of the wedge block, and the top end of the steel spring is fitted to the bottom end of the cover. A clamping slot structure is arranged in the through hole, and a flange for clamping an upper sheet metal is arranged at the top end of the steel nail. The structure of the invention realizes fine adjustment in a narrow space and adopts contactless magnetically controlled adjustment.

Description

Technical Field

[0001] The invention relates to the field of axial tolerance adjustment devices, in particular to a magnetically controlled axial tolerance adjustment device. Background Art

[0002] The existing axial tolerance adjustment devices on the market mostly use metal parts or metal-plastic assemblies, and use the friction between bolts and friction units to achieve axial tolerance adjustment. For fine adjustment in a small space, it is impossible to add additional bolts between the sheet metal for adjustment and locking. Therefore, traditional tolerance adjusters are not suitable for fine adjustment in a small space. For this reason, we propose a new magnetically controlled axial tolerance adjustment device. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention provides a magnetically controlled axial tolerance adjustment device to solve the above-mentioned problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a magnetically controlled axial tolerance adjustment device, comprising a shell, a cover and a steel nail, wherein hooks for clamping the lower sheet metal are arranged on both sides of the shell, a through hole is opened inside the shell, the steel nail is inserted into the through hole, the bottom end of the cover is inserted into the top end of the shell, a plurality of wedge blocks are arranged in the through hole, a steel spring is arranged between the top end of the wedge block and the bottom end of the cover, a slot structure is arranged in the through hole, and a method for clamping the upper sheet metal is arranged at the top end of the steel nail. The flange comprises a slot one, a slot two and a slot three, the through hole consists of slot one, slot two and slot three, the slot two is located between slot one and slot three, the slot one is located at the bottom of the through hole, an internal thread is provided at the upper end of the inner wall of the shell, the bottom end of the cover is threadedly connected with the internal thread, the slot two is in a conical structure, and the slot two is consistent with the conical size of the wedge block, the diameter of the slot one is slightly larger than the rod diameter of the steel nail, a pair of hooks are provided at the top end of the flange, and the rod of the steel nail is a rough surface.

[0007] Preferably, there are two wedge blocks, and the bottom end of the wedge block is a conical surface, and the bottom end of the wedge block matches the size of the second bottom end of the slot, a cylinder with a gap is formed between the two wedge blocks, and the curvature formed by the two wedge blocks is consistent with the curvature of the steel nail rod, and the upper end of the wedge block has a straight edge.

[0008] Preferably, the bottom end of the steel spring is pressed down on the top end of the wedge block, the top end of the steel spring is fitted to the bottom end of the cover, and the outer diameter of the steel spring is smaller than the diameter of the third slot.

[0009] Preferably, a groove is provided inside the cover, the top diameter of the groove is slightly larger than the rod diameter of the steel nail, and the bottom diameter of the groove is larger than the top diameter.

[0010] (III) Beneficial effects

[0011] Compared with the prior art, the present invention provides a magnetically controlled axial tolerance adjustment device, which has the following beneficial effects:

[0012] In the magnetically controlled axial tolerance adjustment device, the gap between the upper and lower sheet metals attracts the steel nails, steel springs and wedge blocks to move upward through the external magnetic field, and the friction force of the wedge blocks on the steel nails is released. That is, the external magnetic field is used as the starting switch of the adjustment device. When the magnetic field is applied, the steel spring locking mechanism in the device is compressed, and the friction between the friction unit and the steel nail is released, and the unlocking is successful. After unlocking, the steel nail can be freely axially adjusted to the appropriate position. After removing the external magnetic field, the steel spring presses and locks the friction unit to lock the steel nail, thereby playing a role in axial tolerance adjustment. This technology realizes contactless, precise, and small-space axial tolerance adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the disassembled structure of the tolerance adjustment device of the present invention.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the shell of the present invention.

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the cover of the present invention.

[0016] In the figure: 1. outer shell; 2. wedge block; 3. steel spring; 4. cover; 5. steel nail; 6. hook; 7. perforation; 8. internal thread; 9. groove; 10. slot one; 11. slot two; 12. slot three; 13. flange; 14. hook. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-3A magnetically controlled axial tolerance adjustment device comprises a shell 1, a cover 4 and a steel nail 5. Hooks 6 for clamping the lower sheet metal are arranged on both sides of the shell 1. A through hole 7 is opened inside the shell 1. The steel nail 5 is inserted into the through hole 7. The bottom end of the cover 4 is inserted into the top end of the shell 1. A plurality of wedge blocks 2 are arranged in the through hole 7. A steel spring 3 is arranged between the top end of the wedge block 2 and the bottom end of the cover 4. A slot structure is arranged in the through hole 7. A flange 13 for clamping the upper sheet metal is arranged at the top end of the steel nail 5. The slot structure comprises a slot 10, a slot 2 11 and a slot 3 12. The through hole 7 consists of a slot 10, a slot 2 11 and a slot 3 12. And a slot three 12, slot two 11 is located between slot one 10 and slot three 12, slot one 10 is located at the bottom of the through hole 7, the upper end of the inner wall of the shell 1 is provided with an internal thread 8, the bottom end of the cover 4 is threadedly connected with the internal thread 8, slot two 11 is a conical structure, and slot two 11 is consistent with the conical size of the wedge block 2, the diameter of slot one 10 is slightly larger than the rod diameter of the steel spring nail 5, the upper end of the inner wall of the shell 1 is provided with an internal thread for locking with the cover 4, a pair of hooks 14 are provided at the top of the flange 13, the rod of the steel nail 5 is a rough surface for clamping with the upper sheet metal, and the rod of the steel nail 5 is rough to increase friction.

[0019] Furthermore, there are two wedge blocks 2, and the bottom end of the wedge block 2 is a conical surface, and the bottom end of the wedge block 2 matches the size of the bottom end of the second slot 11. The diameter formed by the two wedge blocks 2 is smaller than the maximum diameter of the second slot 11. A cylinder with a gap is formed between the two wedge blocks 2, and the curvature formed by the two wedge blocks 2 is consistent with the curvature of the rod of the steel nail 5, ensuring that contact friction is formed between the inner walls of the two wedge blocks 2 and the steel nail 5. The upper end of the wedge block 2 has a straight edge to ensure that the wedge block 2 moves up and down in the through hole 7 in the outer shell 1.

[0020] Furthermore, the bottom end of the steel spring 3 is pressed down on the top end of the wedge block 2, and the top end of the steel spring 3 is fitted to the bottom end of the cover 4. The steel spring 3 is always in a compressed state, and the outer diameter of the steel spring 3 is smaller than the diameter of the slot 3 12.

[0021] A groove 9 is formed inside the cover 4 , the top diameter of the groove 9 is consistent with the rod diameter of the steel nail 5 , and the bottom diameter of the groove 9 is larger than the top diameter.

[0022] Working principle: When in use, first insert the shell 1 from the bottom to the top through the sheet metal opening, then assemble the wedge block 2, the steel spring 3 and the cover 4 from the top to the bottom in order and tighten the cover 4, so that the cover 4 and the hook 6 on the shell 1 jointly lock the lower sheet metal to prevent it from falling off up and down, and then insert the steel nail 5 from the opening of the cover 4 into the assembly from the top to the bottom, and then install the upper sheet metal in place, covering the steel nail 5, adjust the angle of the steel nail 5, so that the opening on the lower covering surface of the upper sheet metal is aligned with the hook 14 on the flange 13 and locked, the external magnetic field is located above the upper sheet metal for adjustment, and the gap between the upper and lower sheet metals attracts the steel nail 5 through the external magnetic field. , the steel spring 3 and the wedge block 2 move up, the friction force of the wedge block 2 on the steel nail 5 is released, and the steel nail 5 is attracted by the magnetic field and directly moves up and presses against the upper sheet metal. The hook 14 on the steel nail 5 is clamped with the opening of the upper sheet metal. At this time, the steel nail 5 can freely adjust the upper and lower heights. The external magnetic switch can press or pull the upper sheet metal to the set position of the upper sheet metal according to needs. At this time, the external magnetic field switch is turned off, and the steel spring 3 elastically releases the compressed wedge block 2 to move down and frictionally lock with the rod of the steel nail 5, playing an axial compression and tension role, ensuring that the upper and lower sheet metal positions are fixed, realizing fine adjustment in a small space, and adopting contactless magnetic control adjustment.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetically controlled axial tolerance adjustment device, comprising a housing (1), a cover (4) and a steel nail (5), characterized in that: Hooks (6) for clamping the lower sheet metal are arranged on both sides of the shell (1), a through hole (7) is opened inside the shell (1), the steel nail (5) is inserted into the through hole (7), the bottom end of the cover (4) is inserted into the top end of the shell (1), a plurality of wedge blocks (2) are arranged in the through hole (7), a steel spring (3) is arranged between the top end of the wedge block (2) and the bottom end of the cover (4), a slot structure is arranged in the through hole (7), a flange (13) for clamping the upper sheet metal is arranged at the top end of the steel nail (5), the slot structure includes a first slot (10), a second slot (11) and a third slot (12), the through hole (7) The invention comprises a first card slot (10), a second card slot (11) and a third card slot (12), wherein the second card slot (11) is located between the first card slot (10) and the third card slot (12), the first card slot (10) is located at the bottom end of the through hole (7), the upper end of the inner wall of the shell (1) is provided with an internal thread (8), the bottom end of the cover (4) is threadedly connected to the internal thread (8), the second card slot (11) is in a conical structure, and the conical size of the second card slot (11) matches that of the wedge block (2), the diameter of the first card slot (10) is slightly larger than the rod diameter of the steel nail (5), the top end of the flange (13) is provided with a pair of hooks (14), and the rod of the steel nail (5) is a rough surface.

2. The magnetically controlled axial tolerance adjustment device according to claim 1 is characterized in that: The number of the wedge blocks (2) is two, and the bottom end of the wedge block (2) is a conical surface, and the bottom end of the wedge block (2) matches the size of the bottom end of the second slot (11), a cylinder with a gap is formed between the two wedge blocks (2), and the curvature formed by the two wedge blocks (2) is consistent with the curvature of the rod of the steel nail (5), and the upper end of the wedge block (2) has a straight edge.

3. The magnetically controlled axial tolerance adjustment device according to claim 1 is characterized in that: The bottom end of the steel spring (3) is pressed down on the top end of the wedge block (2), the top end of the steel spring (3) is fitted on the bottom end of the cover (4), and the outer diameter of the steel spring (3) is smaller than the diameter of the third slot (12).

4. The magnetically controlled axial tolerance adjustment device according to claim 1 is characterized in that: A groove (9) is provided inside the cover (4), the top diameter of the groove (9) is slightly larger than the rod diameter of the steel nail (5), and the bottom diameter of the groove (9) is larger than the top diameter.

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