A graphite head anti-detachment structure

Abstract

This utility model belongs to the field of display screen manufacturing, specifically relating to a graphite head anti-detachment structure. The graphite head anti-detachment structure provided by this utility model includes: a hollow sleeve rod; a graphite head; two semi-split rods that can be combined into a single complete rod, with one end of the combined semi-split rods inserted into the sleeve rod, and the other end of the combined semi-split rods clamping one end of the graphite head; and a transverse plug penetrating both the sleeve rod and the side walls of the two semi-split rods. This graphite head anti-detachment structure provided by this utility model can firmly fix the graphite head, preventing it from falling off, and high-frequency disassembly and installation will not affect the fixing effect on the graphite head. The structure of this utility model also has strong load-bearing capacity.

Description

Technical Field

[0001] This utility model belongs to the field of display screen manufacturing, and specifically relates to a graphite head anti-detachment structure. Background Technology

[0002] In the manufacturing process of precision electronic devices such as displays, the graphite head is a key component for achieving precise alignment, pressing, and temporary conductive connections. Its assembly stability directly affects production efficiency and product yield. Currently, the assembly of graphite heads and hollow rods is generally achieved by applying external force to press the graphite head into the hollow rod, forming an assembly to meet the force transmission and positioning requirements during operation.

[0003] However, this assembly structure has inherent technical flaws: because the assembly process relies on external force to achieve fit, a certain clearance inevitably exists between the graphite head and the hollow rod. This clearance can be compensated to some extent in the initial assembly stage through interference fit design, but during long-term use, the clearance will gradually change due to the influence of the production environment. Especially in the high-temperature processes of display manufacturing (such as adhesive curing, hot pressing, etc.), the graphite head and hollow rod are exposed to high temperatures for a long time, and the difference in the coefficients of thermal expansion of the two materials will cause different degrees of thermal deformation.

[0004] Specifically, the graphite head is made of graphite, which has a relatively low coefficient of thermal expansion, while the hollow rod is mostly made of metal or alloy, which has a higher coefficient of thermal expansion. During repeated high-temperature heating and cooling cycles, the thermal expansion of the hollow rod is greater than that of the graphite head, causing the fit between the two to gradually loosen and the initial gap to increase. As the service life extends, when the gap exceeds a critical value, the connection strength between the graphite head and the hollow rod decreases sharply, making it impossible to maintain stable force transmission and positioning functions. Ultimately, the graphite head will detach from the hollow rod.

[0005] The detachment of graphite heads not only leads to production interruptions, requiring downtime for component replacement and increasing equipment maintenance and production time costs, but more seriously, the detached graphite heads can cause scratches, contamination, and other damage to the display panels during production, directly resulting in product scrap and significantly reducing production yield. Therefore, solving the problem of graphite head detachment caused by increased clearance between the graphite head and the hollow rod under long-term high-temperature use has become a key technical challenge for improving the stability and economy of display production. Utility Model Content

[0006] The present invention provides a graphite head anti-detachment structure, which can effectively solve the problems in the background art.

[0007] This utility model provides a graphite head anti-detachment structure, comprising:

[0008] Hollow structure sleeve;

[0009] Graphite head;

[0010] Two half-section bars that can be combined into a complete bar; one end of the combined half-section bars is inserted into the sleeve bar; the other end of the combined half-section bars clamps one end of the graphite head.

[0011] And, simultaneously, a transverse plug that penetrates the sleeve and the side walls of both half-sectioned rods.

[0012] As a further optimization of this utility model, one end of the graphite head is frustum-shaped, wherein the smaller end of the frustum is connected to the other end of the graphite head.

[0013] As a further optimization of this utility model, the other end of the graphite head is cylindrical.

[0014] As a further optimization of this utility model, the other end of the rod is provided with an annular boss, and the inner wall of the annular boss is provided with a groove for locking the large end of the truncated cone.

[0015] As a further optimization of this utility model, the other end of the rod is provided with a flange with a size larger than the cross-section of the hollow structure of the sleeve rod, and an annular boss is provided on the flange.

[0016] As a further optimization of this utility model, one half of the rod has a protrusion on its cross-section, and the other half of the rod has a groove corresponding to the protrusion on its cross-section.

[0017] As a further optimization of this utility model, the side wall of the sleeve is provided with a first through hole; the side wall of the rod is provided with a second through hole with a size smaller than the first through hole; one end of the transverse plug is provided with a first plug corresponding to the first through hole, and the other end of the transverse plug is provided with a second plug corresponding to the second through hole.

[0018] As a further optimization of this utility model, the length of the first plunger is not greater than the wall thickness of the sleeve.

[0019] As a further optimization of this utility model, the length of the second plunger is no greater than the sum of the rod thickness and the sleeve wall thickness.

[0020] As a further optimization of this utility model, the first through hole, the second through hole, the first plug and the second plug are all oval in shape, and the length of the oval is consistent with the length direction of the sleeve rod.

[0021] This utility model provides a graphite head anti-detachment structure that can firmly fix the graphite head and prevent it from falling off. High-frequency disassembly and installation will not affect the fixing effect on the graphite head. The structure of this utility model also has strong stress resistance. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the exploded structure of this embodiment;

[0023] Figure 2 This is a schematic diagram of the assembly structure in this embodiment;

[0024] Figure 3 This is a schematic diagram of the graphite head structure in this embodiment;

[0025] Among them, sleeve rod 1, first through hole 1a, graphite head 2, cylinder 2a, frustum 2b, small size end 2b1, large size end 2b2, rod 3, half-section rod 3a, flange 3b, annular boss 3c, slot 3d, second through hole 3e, protrusion 3f, groove 3g, transverse plug 4, first plug 4a, second plug 4b. Detailed Implementation

[0026] like Figure 1-3 As shown, this embodiment includes a sleeve 1, a graphite head 2, a rod 3, and a transverse plug 4.

[0027] Sleeve 1 adopts a hollow round rod structure.

[0028] Rod 3 is also round, and its shape corresponds to the hollow structure of sleeve 1, so that one end of rod 3 can be inserted into sleeve 1. The other end of rod 3 is engaged with graphite head 2.

[0029] In this embodiment, one end of the graphite head 2 adopts a cylindrical structure 2a, and the other end of the graphite head 2 adopts a frustum structure 2b. The smaller end 2b1 of the frustum 2b is connected to the cylindrical structure 2a.

[0030] The other end of the rod 3 is used to fix the graphite head 2 by locking the large end 2b2 of the frustum 2b. Specifically, an annular boss 3c is provided at the other end of the rod 3, and the inner wall of the annular boss 3c is provided with a groove 3d for locking the large end 2b2 of the frustum 2b to fix the graphite head 2.

[0031] Furthermore, in this embodiment, a flange 3b is provided at the other end of the rod 3. The size of the flange 3b is larger than the cross-section of the hollow structure of the rod 3. After one end of the rod 3 is inserted into the sleeve 1, the flange 3b is attached to the end face of the rod 3. An annular boss 3c is provided on the flange 3b. When the rod 3 is inserted into the sleeve 1, the flange 3b can play a positioning role and at the same time support the annular boss 3c, so that the size of the annular boss 3c can be made larger than that of the rod 3.

[0032] In this embodiment, the rod 3 is longitudinally split in the middle to form two half-rods 3a. During installation, the slots 3d of the two half-rods 3a can hold the large-sized end 2b2 of the frustum 2b. Then, one end of the two half-rods 3a is inserted into the sleeve 1. The inner wall of the sleeve 1 forms pressure, which makes the two half-rods 3a tightly hold the large-sized end 2b2 of the frustum 2b, so that the graphite head 2 cannot be dislodged from the rod 3.

[0033] To prevent the two half-section rods 3a from misaligning vertically, this embodiment provides a protrusion 3f on the cross-section of one half-section rod 3a and a groove 3g corresponding to the protrusion 3f on the cross-section of the other half-section rod 3a. When the two half-section rods 3a are joined together, the protrusion 3f engages with the groove 3g, preventing them from misaligning vertically.

[0034] The transverse plug 4 penetrates both the sleeve rod 1 and the side walls of the two half-section rods 3a, preventing them from separating longitudinally.

[0035] Preferably, the side wall of the sleeve rod 1 has a through hole 1a, and the side wall of the rod 3 has a second through hole 3e that simultaneously penetrates both half-section rods 3a. The size of the second through hole 3e is smaller than that of the first through hole 1a. One end of the transverse plug 4 has a first plunger 4a corresponding to the shape and size of the first through hole 1a, and the other end of the transverse plug 4 has a second plunger 4b corresponding to the shape and size of the second through hole 3e. The first plunger 4a of the transverse plug 4 is inserted into the first through hole 1a, and the second plunger 4b of the transverse rod is located in the second through hole 3e. The first plunger 4a can limit the installation of the second plunger 4b.

[0036] Furthermore, the length of the first plunger 4a is less than the wall thickness of the sleeve rod 1, so that after installation, the first plunger 4a can be completely submerged in the sleeve rod 1.

[0037] Furthermore, the length of the second plunger 4b should not exceed the sum of the diameter of the rod 3 and the wall thickness of the sleeve rod 1, so that after installation, the second plunger 4b cannot protrude out of the sleeve rod 1, thereby completely hiding the transverse plug 4 inside the sleeve rod 1.

[0038] Furthermore, the first through hole 1a, the second through hole 3e, the first plug 4a, and the second plug 4b are all oval in shape, and the length of the oval is consistent with the length direction of the sleeve rod 1. This structure can enhance the stress strength of the transverse plug 4 in the length direction of the sleeve rod 1.

[0039] It should be noted that the descriptions of directions such as up, down, left, right, front, back, top, bottom, tail, horizontal, and vertical in this application are all based on the accompanying drawings and are only used to more clearly express the technical solution, and do not indicate any limitation on the scope of protection.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A graphite tip anti-drop structure characterized by comprising: Comprising: A sleeve rod with a hollow structure; A graphite head; Two semi-section rods that can be combined into a complete rod. One end of the combined two semi-section rods is inserted into the sleeve rod, and the other end of the combined two semi-section rods clamps one end of the graphite head; And, a cross plug that penetrates the side walls of the sleeve rod and the two semi-section rods at the same time.

2. The graphite tip anti-drop structure according to claim 1, wherein One end of the graphite head is frustum-shaped, and the small-size end of the frustum is connected to the other end of the graphite head.

3. The graphite tip anti-drop structure according to claim 2, wherein The other end of the graphite head is cylindrical.

4. The graphite tip anti-drop structure according to claim 2, wherein The other end of the rod is provided with an annular boss, and the inner wall of the annular boss is provided with a card slot for clamping the large-size end of the frustum.

5. The graphite tip anti-drop structure according to claim 4, wherein The other end of the rod is provided with a flange larger than the cross-section of the hollow structure of the sleeve rod, and the annular boss is arranged on the flange.

6. The graphite tip anti-drop structure according to claim 1, wherein One semi-section rod has a protrusion on its section, and the other semi-section rod has a notch corresponding to the protrusion on its section.

7. The graphite tip anti-drop structure according to claim 1, wherein The side wall of the sleeve rod is provided with a first through hole; the side wall of the rod is provided with a second through hole smaller than the first through hole; one end of the cross plug is provided with a first plug post corresponding to the first through hole, and the other end of the cross plug is provided with a second plug post corresponding to the second through hole.

8. The graphite tip anti-drop structure according to claim 7, wherein The length of the first plug post is not greater than the wall thickness of the sleeve rod.

9. The graphite tip anti-drop structure according to claim 7, wherein The length of the second plug post is not greater than the sum of the thickness of the rod and the wall thickness of the sleeve rod.

10. The graphite tip anti-drop structure according to claim 1, wherein The first through hole, the second through hole, the first plug post and the second plug post are all waist-shaped, and the length of the waist is in the same direction as the length direction of the sleeve rod.

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