Handlebar expansion screw and terminal

Abstract

The utility model discloses a handlebar expansion screw and a terminal, which comprise a terminal, an outer wedge, an inner wedge, a conical nut and a bolt and are mounted on a handlebar. The outer wedge and the inner wedge are vertically and symmetrically attached to the inner hole wall of the handlebar in an inclined mode, the contact area is large, the expansion screw is fixed to the handlebar more firmly through extrusion of the wedge-shaped structure formed by the diagonal planes, and the expansion screw can be allowed to have a certain inclination angle during installation; bolt grooves are formed in the terminals, inner limiting tables or outer limiting tables are arranged on the bottom faces of the terminals, the terminals can be better installed on the handlebar through expansion screws, the fixing bolts and the handlebar can be better protected when a vehicle falls, and waist line grooves and vertical line grooves can be additionally formed in the terminals to increase attractiveness.

Description

Technical Field

[0001] The utility model relates to the technical field of handlebar protection, in particular to a handlebar expansion screw and a terminal. Background Art

[0002] As a convenient means of transportation and entertainment toy, motorcycles are becoming more and more popular. However, motorcycles are two-wheeled structures, and there is a risk of falling during riding, so handlebar terminals need to be installed to protect the handlebars. Some motorcycle enthusiasts also like to modify their motorcycles according to their own hobbies, especially modifying the handlebar terminals to make the motorcycle beautiful. The handlebar terminals can also effectively absorb the vibration transmitted from the motorcycle to the handlebars. The handlebar terminals, bow guards or handlebar mirrors, etc. need to be fixed to the handlebars with special expansion screws. Common expansion screws sometimes become loose.

[0003] Document CN116001956A describes an energy absorbing guard bow and an installation method, which includes a structure and a method for installing the energy absorbing guard bow by means of a recessed slot nut and an inner wedge tube and an outer wedge tube.

[0004] Document CN112628261B describes an expansion screw that can accommodate an expansion tube compression sleeve in a compression sleeve accommodating groove without affecting the locking and fixing of the nut and the normal use of the expansion screw; more importantly, a reserved gap is set between the push rod and the expansion tube and the gasket. In this way, when a gap appears in the wall where the expansion screw is located and the expansion screw is loosened, the push rod can be locked to eliminate the gap in the wall where the expansion screw is located, and then the expansion screw can be fixed to the wall again by tightening the nut.

[0005] The disadvantages of the expansion screws known in the prior art are as follows: the expansion screw concave nut in an energy-absorbing guard and installation method is not a standard part and needs to be specially made, which increases the cost of use. When the guard and other fixed objects fixed by the expansion screw are displaced when the vehicle falls, the fixing screw may be deformed; the special structure of the guard may make it impossible for the guard to completely fit the handlebar head, and the expansion screw must be installed at an angle, which will also cause the above-mentioned fixing screw to deform. Document CN112628261B, another expansion screw, and the wall stress point are still locally stressed in the innermost part, the stress area is very small, if it is subjected to impact rotation force, it is still easy to loosen, and it cannot be used in reverse. Utility Model Content

[0006] The utility model aims to provide a handlebar expansion screw and a terminal to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A handlebar expansion screw and terminal, comprising a terminal, an outer wedge, an inner wedge, a conical nut, and a bolt, which are installed on the handlebar;

[0009] The outer wedge and the inner wedge are in a cylindrical state as a whole, and both have a beveled surface with the same bevel angle;

[0010] The conical nut is close to the inner wedge, and the chamfered surface of the outer wedge is close to the chamfered surface of the inner wedge) and is installed by bolt connection;

[0011] The terminal is mounted directly on the handlebar.

[0012] As a further solution of the utility model: the terminal is an integral truncated cone with a circular hole in the center, and the circular hole matches the bolt;

[0013] The top surface of the terminal has a bolt groove and the bottom surface has an external limit platform or an internal limit platform;

[0014] The outer diameter of the outer limit platform matches the inner hole of the handlebar, and can shake slightly after installation;

[0015] The outer diameter of the inner limit platform matches the outer diameter of the handlebar, and can shake slightly after installation;

[0016] The depth and radius of the bolt groove match the size of the bolt head, so that the bolt head can be hidden in the terminal;

[0017] The side of the terminal may also be provided with waistline grooves and vertical line grooves, or they may be provided separately;

[0018] The upper and lower surfaces of the terminal also have chamfers and rounded transitions.

[0019] As a further solution of the utility model: the outer wedge and the inner wedge have the same overall outer shape radius, and have a circular hole with the same radius in the center, and both have a chamfered surface that is chamfered from the middle and lower part to the top, and the angles of the chamfered surfaces are consistent;

[0020] The outer diameter of the conical nut is substantially the same as the outer diameters of the outer wedge and the inner wedge, and may be slightly smaller or larger, but not larger than the inner diameter of the handlebar hole;

[0021] The conical nut has a conical surface, on which conical grooves are evenly distributed, and the inner thread of the conical nut is matched with the bolt;

[0022] The outer diameter of the conical top of the conical nut may be smaller than the inner diameter of the inner wedge, or may be slightly larger than the inner diameter of the inner wedge;

[0023] The diameters of the central circular holes of the outer wedge and the inner wedge are larger than the diameter of the bolt, and the diameter difference is set to D1;

[0024] The outer diameters of the outer wedge and the inner wedge are smaller than the inner diameter of the handlebar hole, and the diameter difference is set to D2;

[0025] D1>D2.

[0026] As a further solution of the utility model: the surface where the inner wedge cylinder is located is set as a bottom surface, and there is also an oblique surface, the cylindrical surface where the top of the oblique surface intersects is set as a high vertical surface, and the opposite is a low vertical surface, and the height of the low vertical surface is close to or greater than the height of the conical nut;

[0027] The inner wedge can be provided with an inner wedge groove or a vertical cut groove or a horizontal cut groove, and after the inner wedge groove is cut, a curved platform is formed;

[0028] The vertical cut groove and the horizontal cut groove are located on the short vertical surface to divide it into left and right parts, so that the inner wedge can be expanded under force and completely fit the inner hole of the handlebar.

[0029] As a further solution of the utility model: it is characterized in that the chamfered surface of the inner wedge needs to remove the sharp corners;

[0030] When the difference between D1 and D2 is large, the chamfered surface of the inner wedge also needs to remove the sharp corners; when the difference between D1 and D2 is large, a certain angle between the bolt 5 and the center axis of the handlebar 6 can be allowed, and slight swing can be allowed when impacted.

[0031] As a further solution of the utility model: it is characterized in that the inner wedge can be used to replace the outer wedge.

[0032] As a further solution of the utility model: it is characterized in that the inner wedge and the conical nut can be regarded as a whole after being fitted together, and the whole is a wedge nut, and one side of the wedge nut has a wedge thread, and next to it is a wedge column hole, and the hole diameter is consistent with the inner diameter of the inner wedge;

[0033] The wedge nut has a chamfered surface consistent with the inner wedge.

[0034] As a further solution of the utility model: it is characterized in that when the outer diameter of the bolt head and the outer diameter of the inner wedge are close to or smaller, they can also be placed in reverse for use.

[0035] Compared with the prior art, the beneficial effects of the utility model are:

[0036] A handlebar expansion screw, an outer wedge and an inner wedge of which are symmetrically fitted on the inner hole wall of the handlebar in an oblique manner, have a large contact area, and are squeezed by a wedge-shaped structure formed by an oblique cut surface, so that the expansion screw is more tightly fixed on the handlebar, and a certain tilt angle can be allowed when the expansion screw is installed; a bolt groove is provided on the terminal, and an inner limit platform or an outer limit platform is provided on the bottom surface, so that the expansion screw can be better installed on the handlebar, and the fixing bolt and the handlebar can be better protected when the vehicle falls; waistline grooves and vertical line grooves can also be added to the terminal to increase the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the explosion structure of the handlebar expansion screws and terminals.

[0038] Figure 2 This is a partial enlarged diagram of the installation of the handlebar expansion screws and terminals.

[0039] Figure 3 This is an enlarged view of the inner wedge structure.

[0040] Figure 4 This is a schematic diagram of the oblique installation structure of the handlebar expansion screw.

[0041] Figure 5 This is a schematic diagram of the structure of a handlebar expansion screw with an inner wedge groove.

[0042] Figure 6 This is the effect diagram of tightening the expansion screw of the handlebar with inner wedge groove.

[0043] Figure 7 This is a schematic diagram of the structure of the vertical groove handlebar expansion screw.

[0044] Figure 8 This is a schematic diagram of the flat-cut handlebar expansion screw structure.

[0045] Fig. 9 This is an enlarged view of the wedge nut structure.

[0046] Fig.10 This is the terminal structure diagram of the internal limit station.

[0047] Fig.11 This is an enlarged view of the terminal bolt slot structure.

[0048] Fig.12 This is the terminal structure diagram of the external limit station.

[0049] Among them: terminal 1, bolt groove 11, outer limit platform 12, inner limit platform 13, waistline groove 14, vertical line groove 15, outer wedge 2, inner wedge 3, inner wedge groove 34, curved platform 35, high vertical surface 36, low vertical surface 37, beveled surface 38, vertical cutting groove 39, flat cutting groove 340, conical nut 41, conical groove 411, wedge nut 43, wedge thread 431, wedge column hole 432, bolt 5, handlebar 6, and fixing object 8. DETAILED DESCRIPTION

[0050] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0051] Embodiment 1, as Figure 1-3 As shown, a handlebar expansion screw and terminal, including a terminal 1, an outer wedge 2, an inner wedge 3, a conical nut 41, and a bolt 5, which are installed on a handlebar 6;

[0052] The outer wedge 2 and the inner wedge 3 are cylindrical as a whole, and both have a chamfered surface 38 with the same chamfering angle;

[0053] The conical nut 41 is close to the inner wedge 3, and the chamfered surface 38 of the outer wedge 2 is close to the chamfered surface 38 of the inner wedge 3 and is connected and installed by bolts 5;

[0054] The terminal 1 is directly mounted on the handlebar 6 .

[0055] like Figure 10-12 As shown, the terminal 1 is an integral truncated cone with a circular hole in the center, and the circular hole matches the bolt 5;

[0056] The terminal 1 has a bolt groove 11 on the top surface and an outer limit platform 12 or an inner limit platform 13 on the bottom surface;

[0057] The outer diameter of the outer limit platform 12 matches the inner hole of the handlebar 6, and can be slightly shaken after installation;

[0058] The outer diameter of the inner limit platform 13 matches the outer diameter of the handlebar 6, and can be slightly shaken after installation;

[0059] The depth and radius of the bolt groove 11 match the size of the head of the bolt 5, so that the head of the bolt 5 can be hidden in the terminal 1;

[0060] A waist line groove 14 and a vertical line groove 15 may be further added to the side of the terminal 1, or they may be added separately;

[0061] The top and bottom surfaces of the terminal 1 also have chamfers and rounded transitions.

[0062] like Figure 1-4 The outer wedge 2 and the inner wedge 3 have the same overall outer radius, and have a circular hole with the same radius in the center, and both have a beveled surface 38 beveled from the middle and lower part to the top, and the angle of the beveled surface 38 is consistent;

[0063] The outer diameter of the conical nut 41 is substantially the same as the outer diameters of the outer wedge 2 and the inner wedge 3, and may be slightly smaller or larger, but not larger than the inner diameter of the handlebar 6 hole;

[0064] The conical nut 41 has a conical surface, and conical grooves 411 are evenly distributed on the conical surface. The internal thread of the conical nut 41 cooperates with the bolt 5;

[0065] The outer diameter of the top of the conical surface of the conical nut 41 can be smaller than the inner diameter of the inner wedge 3. When the bolt is misaligned during installation, part of the conical groove 411 will be pressed against one side of the inner hole of the inner wedge 3 to prevent it from rotating. The outer diameter of the top of the conical surface of the conical nut 41 can also be slightly larger than the inner diameter of the inner wedge 3, so that all the conical grooves 411 can be pressed against the inner hole of the inner wedge 3 and the inner hole can produce slight serrations, thereby preventing the conical nut 41 from rotating.

[0066] The diameters of the central circular holes of the outer wedge 2 and the inner wedge 3 are larger than the diameter of the bolt 5, and the diameter difference is set to D1;

[0067] The outer diameters of the outer wedge 2 and the inner wedge 3 are smaller than the inner diameter of the handlebar 6 hole, and the diameter difference is set to D2;

[0068] Requirement D1>D2.

[0069] like Figure 5-8 As shown, the surface where the cylinder of the inner wedge 3 is located is set as the bottom surface, and there is also a chamfered surface 38, the cylindrical surface where the top of the chamfered surface 38 intersects is set as a high vertical surface 36, and the opposite is a low vertical surface 37, and the height of the low vertical surface 37 is close to or greater than the height of the conical nut 41;

[0070] The inner wedge 3 may be provided with an inner wedge groove 34 or a vertical cut groove 39 or a horizontal cut groove 340;

[0071] After the inner wedge groove 34 exists, after the conical nut 41 is slightly locked, the bend 35 does not deform. After the locking force is further increased, the bend 35 will bend and deform to fit closely to the inner wall of the handlebar 6 to form a secondary friction force, thereby increasing the locking force limit of the expansion screw.

[0072] The vertical cut groove 39 and the horizontal cut groove 340 are located on the short vertical surface 37 to divide it into left and right parts, so that the inner wedge 3 can be expanded under force and completely fit the inner hole of the handlebar 6, and the locking force limit of the expansion screw can also be increased.

[0073] The flat cut groove 340 and the chamfered surface 38 can be cut on a vertical cut surface, which is relatively convenient to process. The wall thickness of the inner wedge tube cannot be too thick, otherwise most of the short vertical surface 37 will be cut off, affecting the strength.

[0074] The vertical cutting groove 39 and the beveled surface 38 cannot be cut on one vertical cutting surface and need to be rotated 90 degrees, but the cutting seam can be very narrow and is not affected by the thickness of the inner wedge tube wall.

[0075] like Figure 1-8As shown, the chamfered surface 38 of the inner wedge 3 needs to remove the sharp corners;

[0076] When the difference between D1 and D2 is large, the chamfered surface 38 of the inner wedge 3 also needs to be sharpened.

[0077] The inner wedge 3 can be used to replace the outer wedge 2.

[0078] like Figure 4-5 As shown, the handlebar expansion screw is sometimes not used to fix the plug 1, but to fix other fixtures 8, including a bow guard, a handlebar mirror, etc., and sometimes it cannot completely fit the handlebar 6, so that there is an angle between the bolt 5 and the center of the handlebar 6. Since the conical surface of the conical nut 41 can swing slightly in the inner hole of the inner wedge 3, the fixture can still be tightened; when the difference between D1 and D2 is large, there is a certain gap between the bolt 5 and the inner hole of the outer wedge 2, and it can swing slightly inside, which allows the bolt 5 to have a certain angle with the center axis of the handlebar, and it can swing slightly when impacted, and the bolt 5 will not be deformed, which will not affect disassembly and secondary use.

[0079] Embodiment 2, as Fig. 9 As shown, the inner wedge 3 and the conical nut 41 can be combined into a whole structure after being attached, and the whole structure is a wedge nut 43, and one side of the wedge nut 43 has a wedge thread 431, and next to it is a wedge column hole 432, and the hole diameter is consistent with the inner diameter of the inner wedge 3;

[0080] The wedge nut 43 has a chamfered surface 38 that is consistent with the inner wedge 3;

[0081] When the difference between D1 and D2 is small, the wedge nut 43 can be used directly to replace the inner wedge 3 and the conical nut 41 to achieve the same effect.

[0082] Embodiment 3: When the outer diameter of the head of the bolt 5 is close to or smaller than the outer diameter of the inner wedge 3, they can also be placed in reverse for use.

[0083] The above describes the preferred implementation of the present invention in detail, but the present invention is not limited to the above implementation. Within the knowledge of ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A handlebar expansion screw and terminal, comprising a terminal (1), an outer wedge (2), an inner wedge (3), a conical nut (41), and a bolt (5), which is mounted on a handlebar (6); Its characteristics are The outer wedge (2) and the inner wedge (3) are in a cylindrical state as a whole, and both have a beveled surface (38) with the same beveled angle; The conical nut (41) is closely adjacent to the inner wedge (3), and the chamfered surface (38) of the outer wedge (2) is closely adjacent to the chamfered surface (38) of the inner wedge (3) and is connected and installed by bolts (5); The terminal (1) is directly mounted on the handlebar (6).

2. A handlebar expansion screw and terminal according to claim 1, characterized in that: The terminal (1) is an integral truncated cone with a circular hole at the center, and the circular hole matches the bolt (5); The terminal (1) has a bolt groove (11) on the top surface and an external limit platform (12) or an internal limit platform (13) on the bottom surface; The outer diameter of the outer limit platform (12) matches the inner hole of the handlebar (6), and can be slightly shaken after installation; The outer diameter of the inner limit platform (13) matches the outer diameter of the handlebar (6) and can be slightly shaken after installation; The depth and radius of the bolt groove (11) match the size of the head of the bolt (5), so that the head of the bolt (5) can be hidden in the terminal (1); A waist line groove (14) and a vertical line groove (15) may also be added to the side of the terminal (1), or they may be added separately; The top and bottom surfaces of the terminal (1) also have chamfers and rounded transitions.

3. A handlebar expansion screw and terminal according to claim 1, characterized in that: The outer wedge (2) and the inner wedge (3) have the same overall outer radius, and have a circular hole with the same radius in the center, and both have a beveled surface (38) beveled from the middle and lower part to the top, and the angle of the beveled surface (38) is consistent; The outer diameter of the conical nut (41) is substantially the same as the outer diameters of the outer wedge (2) and the inner wedge (3), and may be slightly smaller or larger, but not larger than the inner diameter of the handlebar (6) hole; The conical nut (41) has a conical surface, on which conical grooves (411) are evenly distributed, and the internal thread of the conical nut (41) cooperates with the bolt (5); The conical nut (41) has a conical top whose outer diameter may be smaller than the inner diameter of the inner wedge (3), or may be slightly larger than the inner diameter of the inner wedge (3); The diameters of the central circular holes of the outer wedge (2) and the inner wedge (3) are larger than the diameter of the bolt (5), and the diameter difference is set to D1; The outer diameters of the outer wedge (2) and the inner wedge (3) are smaller than the inner diameter of the handlebar (6) hole, and the diameter difference is set to D2; D1>D2.

4. A handlebar expansion screw and terminal according to claim 3, characterized in that: The surface where the cylinder of the inner wedge (3) is located is set as the bottom surface, and there is also a beveled surface (38), the cylindrical surface where the top of the beveled surface (38) intersects is set as the high vertical surface (36), and the opposite is the low vertical surface (37), and the height of the low vertical surface (37) is close to or greater than the height of the conical nut (41); The inner wedge (3) may be provided with an inner wedge groove (34) or a vertical cut groove (39) or a horizontal cut groove (340), and after the inner wedge groove (34) is cut, a curved platform (35) is formed; The vertical cut groove (39) and the horizontal cut groove (340) are located on the short vertical surface (37) to divide it into left and right parts, so that the inner wedge (3) can be expanded under force and completely fit the inner hole of the handlebar (6).

5. A handlebar expansion screw and terminal according to claim 3, characterized in that: When the difference between D1 and D2 is large, the chamfered surface (38) of the inner wedge (3) needs to be free of sharp corners; When the difference between D1 and D2 is large, a certain angle between the bolt (5) and the center axis of the handlebar (6) can be allowed, and the handlebar (6) can swing slightly when impacted.

6. A handlebar expansion screw and terminal according to claim 1, characterized in that: The inner wedge (3) can be used to replace the outer wedge (2).

7. A handlebar expansion screw and terminal according to claim 1, characterized in that: The inner wedge (3) and the conical nut (41) can be regarded as a whole after being fitted together, and the whole is a wedge nut (43). One side of the wedge nut (43) has a wedge thread (431), and next to it is a wedge column hole (432) whose diameter is consistent with the inner diameter of the inner wedge (3); The wedge nut (43) has a chamfered surface (38) that is consistent with the inner wedge (3).

8. A handlebar expansion screw and terminal according to claim 1, characterized in that: When the outer diameter of the head of the bolt (5) and the outer diameter of the inner wedge (3) are close to or smaller than each other, they can also be placed in reverse for use.

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