Hook and mounting screw thereof

Abstract

The utility model provides a hook and a mounting screw thereof, and relates to the technical field of hooks and fixing structures thereof. The mounting screw comprises a first limiting part, a connecting part, a second limiting part and a threaded part which are connected in sequence. The thread part is provided with an external thread. One end of the thread part is conical, and the other end is jointed with the second limiting part. The second limiting part is provided with a first limiting surface; the first limiting surface can abut against an external object. The two ends of the connecting part are connected to the first limiting part and the second limiting part correspondingly, and the first limiting part and the second limiting part protrude in the radial direction from the two sides of the connecting part correspondingly. A second limiting face is arranged on the side, facing the connecting part, of the second limiting part. A limiting slope is arranged on the side, facing the connecting part, of the first limiting part. Limiting grooves are formed in the surfaces of the limiting inclined face, the second limiting face and the connecting part. And the limiting inclined surface is configured to provide a counter-acting force with an included angle of less than 90 degrees between the direction and the axis of the thread part to an extruded object when being extruded. The first limiting part is provided with a driving groove.

Description

Technical Field

[0001] The utility model relates to the technical field of a hook and a fixing structure thereof, in particular to a hook and a mounting screw thereof. Background Art

[0002] Self-tapping screws are a type of fastener widely used in manufacturing and construction. They have a unique thread design that allows them to be screwed directly into various materials (such as plastic, metal, wood, etc.) without prefabricated holes, thereby achieving rapid fixation and connection of multiple objects. This type of screw has been widely used in furniture assembly, electronic equipment installation, automobile manufacturing, building structure and other fields due to its advantages such as easy operation, high efficiency and strong connection.

[0003] Although self-tapping screws are widely used in the above fields, the design and function of self-tapping screws in the prior art still have certain limitations. One major problem is that the existing self-tapping screws can usually only be used to fix a single object or a single connection point. In the case where one screw is required to fix multiple objects at the same time, traditional self-tapping screws are not up to the task.

[0004] In particular, in some locations with small installation space, only one self-tapping screw can be used for fixing, and traditional self-tapping screws may not meet the design requirements because they cannot fix multiple components at the same time in a limited space. This requires a new type of self-tapping screw that can maintain a small head while providing sufficient clamping force and stability to achieve the goal of fixing multiple objects with one screw in a small space.

[0005] In view of this, the applicant filed this application after studying the existing technology. Utility Model Content

[0006] The utility model provides a hook and a mounting screw thereof, aiming to improve at least one of the above technical problems.

[0007] In a first aspect, in order to solve the above technical problem, the utility model provides a mounting screw for a hook, which comprises a first limiting portion, a connecting portion, a second limiting portion and a threaded portion which are connected in sequence.

[0008] The threaded portion is provided with an external thread capable of being screwed into a first external object. One end of the threaded portion is configured as a conical structure, and the other end is engaged with the second limiting portion. A first limiting surface is provided on a side of the second limiting portion facing the threaded portion. The first limiting surface is configured to be able to abut against a second external object so as to abut the second external object against the first external object.

[0009] The two ends of the connecting portion are respectively engaged with the first limiting portion and the second limiting portion, and the first limiting portion and the second limiting portion protrude from both sides of the connecting portion in the radial direction. A second limiting surface is provided on the side of the second limiting portion facing the connecting portion. A limiting inclined surface is provided on the side of the first limiting portion facing the connecting portion. The limiting inclined surface, the second limiting surface and the surface of the connecting portion form a limiting groove. The limiting inclined surface is configured to provide a reaction force to the extruded object in a direction with an angle less than 90 degrees with the axis of the threaded portion when the extruded object is squeezed.

[0010] A driving groove for driving the mounting screw to rotate is provided on a side of the first limiting portion away from the connecting portion.

[0011] In an optional embodiment, an angle G between the limiting inclined surface and the axis of the connecting portion is 25° to 45°.

[0012] In an optional embodiment, the diameter D of the first limiting portion is 7 mm to 8 mm. The length A of the first limiting portion in the axial direction is 5.5 mm to 6.5 mm.

[0013] The diameter E of the connecting portion is 4.5 mm to 5.5 mm. The length B of the connecting portion in the axial direction is 2 mm to 3 mm.

[0014] The diameter F of the second limiting portion is 7 mm to 8 mm. The length C of the second limiting portion in the axial direction is 3 mm to 4 mm.

[0015] In an optional embodiment, the diameter D of the first limit portion is 7.5 mm. The length A of the first limit portion in the axial direction is 6 mm. The diameter E of the connecting portion is 5 mm. The length B of the connecting portion in the axial direction is 2.5 mm. The diameter F of the second limit portion is 7.5 mm. The length C of the second limit portion in the axial direction is 3.5 mm. The angle G between the limit inclined surface and the axis of the connecting portion is 25°.

[0016] Preferably, the first limiting portion, the connecting portion and the second limiting portion are all cylindrical, and the connecting portion has a smaller diameter than the first limiting portion and the second limiting portion.

[0017] In a second aspect, the utility model provides a hook, which comprises an abutment member, a hook body, and a mounting screw of the hook as described in any paragraph of the first aspect.

[0018] The hook body is provided with a hook groove, a receiving groove capable of receiving the first limiting portion, the connecting portion and the second limiting portion, and a limiting hole communicating with the receiving groove.

[0019] The abutment member is engaged with the limiting hole and can extend from the limiting hole into the containing groove to abut against the limiting groove of the mounting screw, thereby engaging the hook body with the mounting screw.

[0020] In an optional embodiment, the limiting hole is a threaded hole. The abutment member is a set screw.

[0021] In an optional embodiment, a first sealing groove is provided on a side of the hook body facing the mounting screw. The hook further comprises a first sealing member capable of at least partially embedding in the first sealing groove.

[0022] In a third aspect, the utility model provides a hook, which includes an abutment member, a hook base, a hook body, and a mounting screw for the hook as described in any paragraph of the first aspect.

[0023] The hook body is provided with a hook groove, a receiving groove capable of receiving the first limiting portion, the connecting portion and at least a part of the second limiting portion, and a limiting hole communicating with the receiving groove.

[0024] The hook base is provided with a mounting through hole which can be sleeved on the threaded portion so as to be abutted against an external object by the first limiting surface.

[0025] The abutment member is engaged with the limiting hole and can extend from the limiting hole into the containing groove to abut against the limiting groove of the mounting screw, thereby engaging the hook body with the mounting screw.

[0026] In an optional embodiment, one of the hook body and the hook base is provided with a positioning groove. The other of the hook body and the hook base is provided with a positioning protrusion adapted to the positioning groove. Preferably, an avoidance groove is provided around the bottom of the positioning protrusion so that the contact surface between the hook body and the hook base can be completely fitted. The number of the positioning groove and the positioning protrusion is 2.

[0027] In an optional embodiment, a second sealing groove is provided on a side of the hook base facing the mounting screw. The hook further comprises a second sealing member capable of at least partially embedding in the second sealing groove.

[0028] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0029] The mounting screws of the hook of the utility model can fix the hook body and the hook base at one time, have good mounting and fixing capabilities, and can be applied in narrow spaces, thus having good practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a side view of the first type of hook.

[0032] Figure 2 This is a half-section view of the first type of hook.

[0033] Figure 3 It is a side view of the second type of hook.

[0034] Figure 4 This is a half-section view of the second type of hook.

[0035] Figure 5 This is an exploded view of the first type of hook.

[0036] Figure 6 This is a half-section view of the first type of hook (exploded state).

[0037] Figure 7 This is an exploded view of the second type of hook from the first perspective.

[0038] Figure 8 This is an exploded view of the geothermal perspective of the second hook.

[0039] Fig. 9 This is a half-section view of the second type of hook (exploded state).

[0040] Fig.10 is a side view of the mounting screws.

[0041] Fig.11 This is a half-section view of the installation screw.

[0042] Markings in the figure: 1-hook body, 2-first sealing member, 3-mounting screw, 4-abutment member, 5-hook groove, 6-accommodating groove, 7-limiting hole, 8-first sealing groove, 9-hook base, 10-second sealing member, 11-avoidance groove, 12-first limiting portion, 13-connecting portion, 14-second limiting portion, 15-threaded portion, 16-limiting plane, 17-limiting inclined surface, 18-second limiting surface. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the implementation mode of the utility model clearer, the technical scheme in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the described implementation mode is a part of the implementation mode of the utility model, not all of the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the implementation mode of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected implementation mode of the utility model. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0044] Embodiment 1: Figures 1 to 10 As shown, an embodiment of the utility model provides a mounting screw 3 for a hook, which comprises a first limiting portion 12, a connecting portion 13, a second limiting portion 14 and a threaded portion 15 which are connected in sequence.

[0045] The threaded portion 15 is provided with an external thread capable of being screwed into a first external object. One end of the threaded portion 15 is configured as a conical structure, and the other end is engaged with the second limiting portion 14. The second limiting portion 14 is provided with a first limiting surface 16 on one side facing the threaded portion 15. The first limiting surface 16 is configured to abut against a second external object so as to abut the second external object against the first external object.

[0046] The two ends of the connecting portion 13 are respectively engaged with the first limiting portion 12 and the second limiting portion 14, and the first limiting portion 12 and the second limiting portion 14 protrude from both sides of the connecting portion 13 in the radial direction. The second limiting portion 14 is provided with a second limiting surface 18 on the side facing the connecting portion 13. The first limiting portion 12 is provided with a limiting inclined surface 17 on the side facing the connecting portion 13. The limiting inclined surface 17, the second limiting surface 18 and the surface of the connecting portion 13 form a limiting groove. The limiting inclined surface 17 is configured to provide a reaction force to the extruded object in a direction with an angle of less than 90 degrees with the axis of the threaded portion 15 when being squeezed by the extruded object.

[0047] A driving groove for driving the mounting screw 3 to rotate is provided on a side of the first limiting portion 12 away from the connecting portion 13 .

[0048] Preferably, the first limiting portion 12, the connecting portion 13 and the second limiting portion 14 are all cylindrical, and the diameter of the connecting portion 13 is smaller than that of the first limiting portion 12 and the second limiting portion 14. In other embodiments, the cross-sections of the first limiting portion 12, the connecting portion 13 and the second limiting portion 14 can be any other shape, which is not specifically limited in the present invention.

[0049] Specifically, the first limiting surface 16 can press an object against the wall. The limiting groove can fix a second object through a set screw spring pin and other structures. Furthermore, the limiting inclined surface 17 can provide a force for the second object to tilt toward the first object, thereby tightly fixing the two objects together. The mounting screw 3 of the hook of the utility model can fix the hook body 1 and the hook base 9 at one time, and has a good installation and fixing ability, and can be used in narrow spaces, which has a good practical significance.

[0050] like Figure 10 to Figure 11 As shown, on the basis of the above embodiments, in an optional embodiment of the utility model, the angle G between the limiting slope 17 and the axis of the connecting portion 13 is 25° to 45°. The diameter D of the first limiting portion 12 is 7mm to 8mm. The length A of the first limiting portion 12 in the axial direction is 5.5mm to 6.5mm. The diameter E of the connecting portion 13 is 4.5mm to 5.5mm. The length B of the connecting portion 13 in the axial direction is 2mm to 3mm. The diameter F of the second limiting portion 14 is 7mm to 8mm. The length C of the second limiting portion 14 in the axial direction is 3mm to 4mm.

[0051] Specifically, the diameter and length of the first limiting portion 12, the connecting portion 13 and the second limiting portion 14 can be set by those skilled in the art according to actual needs, and the utility model does not make specific limitations. Preferably, the diameter D of the first limiting portion 12 is 7.5 mm. The length A in the axial direction of the first limiting portion 12 is 6 mm. The diameter E of the connecting portion 13 is 5 mm. The length B in the axial direction of the connecting portion 13 is 2.5 mm. The diameter F of the second limiting portion 14 is 7.5 mm. The length C in the axial direction of the second limiting portion 14 is 3.5 mm. The angle G between the limiting slope 17 and the axis of the connecting portion 13 is 25°.

[0052] Embodiment 2: Figure 1 , 2 As shown in 5 and 6, the utility model provides a hook, which includes an abutment member 4, a hook body 1, and a mounting screw 3 of a hook as described in any section of the first embodiment.

[0053] The hook body 1 is provided with a hook groove 5, a receiving groove 6 capable of accommodating a first limiting portion 12, a connecting portion 13 and a second limiting portion 14, and a limiting hole 7 connected to the receiving groove 6. The abutment member 4 is engaged with the limiting hole 7, and can extend from the limiting hole 7 into the receiving groove 6 to abut against the limiting groove of the mounting screw 3, thereby engaging the hook body 1 on the mounting screw 3. Preferably, the limiting hole 7 is a threaded hole. The abutment member 4 is a set screw. In other embodiments, the abutment member 4 can be other buckle structures such as a spring pin, and the embodiment of the utility model makes specific limitations on this.

[0054] Specifically, the set screw abuts against the limiting inclined surface 17, thereby providing a pressure toward the wall for the hook body 1, so that it is firmly fixed on the wall, which has good practical significance. In addition, the set screw can be installed below the hook body 1 and cannot be seen, so that the upper surface and side surfaces of the hook body 1 have no openings, which is more beautiful.

[0055] like Figure 5 and Figure 6 As shown, based on the above embodiment, in an optional embodiment of the present invention, a first sealing groove 8 is provided on the side of the hook body 1 facing the mounting screw 3. The hook also includes a first sealing member 2 which can be at least partially embedded in the first sealing groove 8.

[0056] Embodiment three, as Figure 3 , Figure 4 ,as well as Figures 7 to 9 As shown, the utility model provides a hook, which includes an abutment member 4, a hook base 9, a hook body 1, and a mounting screw 3 of a hook as described in any section of the first embodiment.

[0057] The hook base 9 is provided with a mounting through hole which can be sleeved on the threaded portion 15 so as to be abutted against an external object by the first limiting surface 16 .

[0058] The hook body 1 is provided with a hook groove 5, a receiving groove 6 capable of accommodating a first limiting portion 12, a connecting portion 13 and at least a part of the second limiting portion 14, and a limiting hole 7 connected to the receiving groove 6. The abutment member 4 is engaged with the limiting hole 7, and can extend from the limiting hole 7 into the receiving groove 6 to abut against the limiting groove of the mounting screw 3, thereby engaging the hook body 1 on the mounting screw 3. Preferably, the limiting hole 7 is a threaded hole. The abutment member 4 is a set screw. In other embodiments, the abutment member 4 can be other snap-on structures such as a spring pin, and the embodiments of the utility model therefore make specific limitations on this.

[0059] Specifically, the set screw abuts against the limiting inclined surface 17, thereby providing a pressure to the hook body 1 in the direction of the hook base 9, so that the hook body 1 is firmly fixed on the hook base 9, which has a good practical significance. In addition, the set screw can be installed below the hook body 1 and cannot be seen, so that the upper surface and side surfaces of the hook body 1 have no openings, which is more beautiful.

[0060] like Figure 7 and Fig. 9 As shown, based on the above embodiment, in an optional embodiment of the utility model, one of the hook body 1 and the hook base 9 is provided with a positioning groove. The other of the hook body 1 and the hook base 9 is provided with a positioning protrusion adapted to the positioning groove. Preferably, an avoidance groove 11 is provided around the bottom of the positioning protrusion so that the contact surface between the hook body 1 and the hook base 9 can be completely fitted. The number of the positioning groove and the positioning protrusion is 2.

[0061] Specifically, since the mold cannot produce an absolute right angle, the corner between two planes often needs to be rounded to transition, which often causes the opening of the positioning groove to abut against the position of the rounded corner, making it impossible for the plane with the positioning groove and the plane with the positioning protrusion to fit completely, but with a certain gap.

[0062] In the embodiment of the utility model, an avoidance groove 11 is provided at the bottom of the positioning protrusion, thereby eliminating the chamfer used for transition, so that the planes between the hook body 1 and the hook base 9 can be completely fitted together to achieve a seamless docking effect, making the appearance more beautiful and less likely to get dusty, which has great practical significance.

[0063] like Figures 7 to 9 As shown, based on the above embodiment, in an optional embodiment of the present utility model, a second sealing groove is provided on the side of the hook base 9 facing the mounting screw 3. The hook also includes a second sealing member 10 that can be at least partially embedded in the second sealing groove.

[0064] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mounting screw (3) for a hook, characterized in that: It comprises a first limiting portion (12), a connecting portion (13), a second limiting portion (14) and a threaded portion (15) which are connected in sequence; The threaded portion (15) is provided with an external thread capable of being screwed into a first external object; one end of the threaded portion (15) is configured as a conical structure, and the other end is engaged with the second limiting portion (14); a first limiting surface (16) is provided on a side of the second limiting portion (14) facing the threaded portion (15); the first limiting surface (16) is configured to be capable of abutting against a second external object, so as to abut the second external object against the first external object; The two ends of the connecting portion (13) are respectively connected to the first limiting portion (12) and the second limiting portion (14), and the first limiting portion (12) and the second limiting portion (14) are respectively protruded from both sides of the connecting portion (13) in the radial direction; the second limiting portion (14) is provided with a second limiting surface (18) on the side facing the connecting portion (13); the first limiting portion (12) is provided with a limiting inclined surface (17) on the side facing the connecting portion (13); the limiting inclined surface (17), the second limiting surface (18) and the surface of the connecting portion (13) form a limiting groove; the limiting inclined surface (17) is configured to provide a reaction force to the extruded object in a direction with an angle less than 90 degrees with the axis of the threaded portion (15) when being squeezed by the extruded object; A driving groove for driving the mounting screw (3) to rotate is provided on a side of the first limiting portion (12) away from the connecting portion (13).

2. A hook mounting screw (3) according to claim 1, characterized in that , an angle G between the limiting inclined surface (17) and the axis of the connecting portion (13) is in a range of 25° to 45°.

3. A hook mounting screw (3) according to claim 1, characterized in that , the diameter D of the first limiting portion (12) is 7 mm to 8 mm; the length A of the first limiting portion (12) in the axial direction is 5.5 mm to 6.5 mm; The diameter E of the connecting portion (13) is 4.5 mm to 5.5 mm; the length B of the connecting portion (13) in the axial direction is 2 mm to 3 mm; The diameter F of the second limiting portion (14) is 7 mm to 8 mm; the length C of the second limiting portion (14) in the axial direction is 3 mm to 4 mm.

4. A hook mounting screw (3) according to any one of claims 1 to 3, characterized in that , the diameter D of the first limiting portion (12) is 7.5 mm; the length A of the first limiting portion (12) in the axial direction is 6 mm; the diameter E of the connecting portion (13) is 5 mm; the length B of the connecting portion (13) in the axial direction is 2.5 mm; the diameter F of the second limiting portion (14) is 7.5 mm; the length C of the second limiting portion (14) in the axial direction is 3.5 mm; the angle G between the limiting inclined surface (17) and the axis of the connecting portion (13) is 25°; The first limiting portion (12), the connecting portion (13) and the second limiting portion (14) are all cylindrical, and the connecting portion (13) has a smaller diameter than the first limiting portion (12) and the second limiting portion (14).

5. A hook, characterized in that: It comprises an abutment member (4), a hook body (1), and a mounting screw (3) of a hook as claimed in any one of claims 1 to 4; The hook body (1) is provided with a hook groove (5), a receiving groove (6) capable of receiving a first limiting portion (12), a connecting portion (13) and a second limiting portion (14), and a limiting hole (7) communicating with the receiving groove (6); The abutment member (4) is engaged with the limiting hole (7) and can extend from the limiting hole (7) into the accommodating groove (6) to abut against the limiting groove of the mounting screw (3), thereby engaging the hook body (1) on the mounting screw (3).

6. A hook according to claim 5, characterized in that , the limiting hole (7) is a threaded hole; the abutment member (4) is a set screw; A first sealing groove (8) is provided on a side of the hook body (1) facing the mounting screw (3); the hook also includes a first sealing member (2) capable of at least partially embedding in the first sealing groove (8).

7. A hook, characterized in that: It comprises an abutment member (4), a hook base (9), a hook body (1), and a mounting screw (3) of a hook as claimed in any one of claims 1 to 4; The hook body (1) is provided with a hook groove (5), a receiving groove (6) capable of receiving the first limiting portion (12), the connecting portion (13) and at least part of the second limiting portion (14), and a limiting hole (7) communicating with the receiving groove (6); The hook base (9) is provided with a mounting through hole capable of being sleeved on the threaded portion (15), so as to be able to be abutted against an external object by the first limiting surface (16); The abutment member (4) is engaged with the limiting hole (7) and can extend from the limiting hole (7) into the accommodating groove (6) to abut against the limiting groove of the mounting screw (3), thereby engaging the hook body (1) on the mounting screw (3).

8. A hook according to claim 7, characterized in that One of the hook body (1) and the hook base (9) is provided with a positioning groove; and the other of the hook body (1) and the hook base (9) is provided with a positioning protrusion matched with the positioning groove.

9. A hook according to claim 8, characterized in that The bottom circumference of the positioning protrusion is provided with an avoidance groove (11) so that the contact surface between the hook body (1) and the hook base (9) can be completely fitted.

10. A hook according to claim 8, characterized in that , the number of the positioning grooves and the positioning protrusions is 2; A second sealing groove is provided on a side of the hook base (9) facing the mounting screw (3); The hook also includes a second sealing member (10) capable of at least partially embedding in the second sealing groove.

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