Metal fastener connecting structure

Abstract

The utility model relates to the technical field of fastener connection, in particular to a metal fastener connecting structure which comprises a sapphire bottom cover and a sapphire surface shell, the sapphire bottom cover and the sapphire surface shell are both of a square structure and are matched with each other, and a bottom tooth socket is inserted in the middle of the sapphire surface shell. The bottom tooth socket is used for increasing the firmness with the sapphire watchcase after being deformed, the bottom tooth socket is composed of a positioning part, a deformation part, a deformation groove and a placement hole, at least four mounting holes are formed in the upper end of the sapphire watchcase, fixing holes are formed in the sapphire bottom cover, the mounting holes and the fixing holes are coaxially arranged, and the lower end of the bottom tooth socket is inserted into the mounting holes. A steel ball used for changing the shape of the bottom tooth sleeve is placed in the middle of the bottom tooth sleeve, the upper end of the bottom tooth sleeve is in threaded connection with a screw, firmness of two metal fasteners during connection can be guaranteed, and deformation of threads of the threaded hole during connection is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener connection technical field, concretely is a kind of metal fastener connection structure. BACKGROUND

[0002] In order to make two metal fasteners closely connected together, usually screw or bolt is used for fastening connection. However, when some fragile and deformable metal is fastened and connected, in order to ensure the firmness of connection, screw is closely connected with thread hole in metal, which causes deformation of thread mouth, and seriously, it can also cause deformation or damage of the metal. SUMMARY

[0003] The utility model discloses a metal fastener connection structure, to solve the problem raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of metal fastener connection structure, including sapphire bottom cover and sapphire surface shell, the sapphire bottom cover and sapphire surface shell are all mouth-shaped structure, and the two are mutually matched and combined, the sapphire surface shell middle is inserted with bottom tooth cover, the bottom tooth cover is used to increase firm degree with sapphire surface shell after deformation, the bottom tooth cover is composed of positioning part, deformation part, deformation groove and placement hole, the sapphire surface shell upper end is equipped with at least four mounting holes, the sapphire bottom cover is equipped with fixed hole, the mounting hole and fixed hole coaxial line arrangement, the bottom tooth cover lower end is inserted in mounting hole, the middle of the bottom tooth cover is placed with the steel ball for changing the shape of bottom tooth cover, the bottom tooth cover upper end is connected with screw thread.

[0005] Preferably, the positioning part is rectangular structure, the deformation part is columnar structure, and the deformation part is fixedly connected to the lower end of the positioning part.

[0006] Preferably, the upper end of the mounting hole is in stepped structure, the positioning part is placed at the step of the mounting hole, and the mounting hole is in horn structure downward from the step.

[0007] Preferably, the placement hole is located in the middle of the positioning part and the deformation part, the lower side inner wall of the placement hole is provided with a blocking slope, and the steel ball is located at the blocking slope.

[0008] Preferably, the deformation groove is located at the lower end of the deformation part, and the deformation groove is in cross structure.

[0009] Preferably, the fixed hole is in stepped structure, the screw is inserted into the fixed hole, and the lower half of the screw is threadedly connected with the placement hole.

[0010] Preferably, the lower end of the screw is fixedly connected with a thimble, and the thimble abuts against the steel ball.

[0011] Compared with the prior art, the sapphire bottom cover and the sapphire surface shell are connected through the bottom tooth cover, the bottom tooth cover is inserted into the installation hole, the bottom tooth cover is expanded outward at the notch part of the deformation groove when the bottom tooth cover is pressed by the top pin at the lower end of the screw during screw installation, and the bottom tooth cover is hooked with the bottom of the installation hole, so that the fastening of the connection between the bottom tooth cover and the installation hole is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a schematic view of a sapphire bottom cover and a sapphire surface shell connection structure.

[0013] Fig. 2 It is a schematic view of a screw and a bottom tooth cover connection.

[0014] Fig. 3 It is a schematic view of a bottom tooth cover three-dimensional structure.

[0015] In the figure: 1 screw, 2 sapphire bottom cover, 3 steel ball, 4 bottom tooth cover, 41 positioning part, 42 deformation part, 43 deformation groove, 44 placement hole, 5 sapphire surface shell, 6 fixed hole, 7 installation hole, 8 blocking slope, 9 top pin. DETAILED DESCRIPTION

[0016] In order to deepen the understanding and understanding of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described and introduced in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and do not limit the embodiments in any form. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0017] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: a metal fastener connection structure, including sapphire bottom cover 2 and sapphire surface shell 5, sapphire bottom cover 2 and sapphire surface shell 5 are all mouth character structure, and two are mutually matched, sapphire surface shell 5 is inserted with bottom tooth cover 4 in middle, bottom tooth cover 4 is used to increase firm degree with sapphire surface shell 5 after deformation, bottom tooth cover 4 is composed of positioning part 41, deformation part 42, deformation groove 43 and placement hole 44, sapphire surface shell 5 upper end is equipped with at least four installation holes 7, sapphire bottom cover 2 is equipped with fixed hole 6, installation hole 7 and fixed hole 6 coaxial line setting, bottom tooth cover 4 lower end is inserted into installation hole 7, steel ball 3 for changing the shape of bottom tooth cover 4 is placed in the middle of bottom tooth cover 4, and screw 1 is threadedly connected to the upper end of bottom tooth cover 4.

[0018] The positioning part 41 is rectangular structure, the deformation part 42 is columnar structure, the deformation part 42 is fixedly connected to the lower end of the positioning part 41, the upper end of the mounting hole 7 is the stepped structure, the positioning part 41 is placed at the step of the mounting hole 7, the mounting hole 7 is trumpet-shaped structure from the step downward, after placing the bottom tooth sleeve 4 in the mounting hole 7, the bottom tooth sleeve 4 is positioned and placed.

[0019] The placing hole 44 is located in the middle of the positioning part 41 and the deformation part 42, the lower inner wall of the placing hole 44 is provided with the blocking inclined surface 8, the steel ball 3 is located at the blocking inclined surface 8, the deformation groove 43 is located at the lower end of the deformation part 42, the deformation groove 43 is cross-shaped structure, after placing the bottom tooth sleeve, the steel ball 3 is placed into the placing hole 44, the steel ball 3 is blocked by the blocking inclined surface 8, when the steel ball 3 is extruded and moves downward, the lower end of the bottom tooth sleeve 4 is expanded, so as to be hooked with the mounting hole 7, to ensure the fastening of the connection between the bottom tooth sleeve 4 and the mounting hole 7.

[0020] The fixed hole 6 is the stepped structure, the screw 1 is inserted into the fixed hole 6, the lower half of the screw 1 is screwed with the placing hole 44, the lower end of the screw 1 is fixedly connected with the thimble 9, the thimble 9 abuts against the steel ball 3, when the screw 1 is screwed with the placing hole 44, the thimble 9 at the lower end of the screw 1 can extrude the steel ball 3, so as to push the steel ball 3 to move downward, to make the deformation part 42 at the deformation groove 43 position to be deformed.

[0021] Although the embodiments of the utility model have been shown and described, it needs to emphasize: the above description is only the introduction and description of the use mode of the embodiments of the utility model, is not any form of restriction to the utility model.For ordinary skilled in the art, it can be understood that the embodiments can be changed, modified, replaced and changed in many ways without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and its equivalents.

Claims

1. A metal fastener connection structure, comprising a sapphire base cover (2) and a sapphire case (5), characterized in that: The sapphire base cover (2) and the sapphire watch case (5) are both of the square-shaped structure and they match each other. A bottom tooth sleeve (4) is inserted in the middle of the sapphire watch case (5). The bottom tooth sleeve (4) is deformed to increase the firmness with the sapphire watch case (5). The bottom tooth sleeve (4) is composed of a positioning part (41), a deformation part (42), a deformation groove (43) and a placement hole (44). The upper end of the sapphire case (5) is provided with at least four mounting holes (7), and the sapphire bottom cover (2) is provided with fixing holes (6). The mounting holes (7) and fixing holes (6) are arranged on the same axis. The lower end of the bottom tooth sleeve (4) is inserted into the mounting hole (7), and a steel ball (3) for changing the shape of the bottom tooth sleeve (4) is placed in the middle of the bottom tooth sleeve (4). A screw (1) is threadedly connected to the upper end of the bottom tooth sleeve (4).

2. The metal fastener connection structure according to claim 1, characterized in that: The positioning part (41) has a rectangular structure, and the deformable part (42) has a columnar structure. The deformable part (42) is fixedly connected to the lower end of the positioning part (41).

3. The metal fastener connection structure according to claim 1, characterized in that: The upper end of the mounting hole (7) is a stepped structure, the positioning part (41) is placed at the step of the mounting hole (7), and the mounting hole (7) is a trumpet-shaped structure from the step downwards.

4. The metal fastener connection structure according to claim 1, characterized in that: The placement hole (44) is located between the positioning part (41) and the deformation part (42). The lower inner wall of the placement hole (44) is provided with a blocking slope (8), and the steel ball (3) is located at the blocking slope (8).

5. The metal fastener connection structure according to claim 1, characterized in that: The deformation groove (43) is located at the lower end of the deformation part (42), and the deformation groove (43) has a cross-shaped structure.

6. The metal fastener connection structure according to claim 1, characterized in that: The fixing hole (6) has a stepped structure, and the screw (1) is inserted into the fixing hole (6). The lower half of the screw (1) is threadedly connected to the placement hole (44).

7. The metal fastener connection structure according to claim 1, characterized in that: The lower end of the screw (1) is fixedly connected to a pin (9), which abuts against the steel ball (3).

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