Helmet buckle

Abstract

The utility model discloses a helmet buckle which comprises a belt unit with a first tooth part, and further comprises a base unit, the base unit is used for guiding the belt unit to slide when the belt unit is led in or withdrawn and comprises an integrally-formed base bottom and base side parts located on the two sides of the base bottom, and limiting blocks are integrally arranged on the two base side parts; the locking unit is arranged on the side portions of the two bases in a pivoted mode and comprises an integrally-formed locking base portion and locking side portions located on the two sides of the locking base portion, the face, facing the belt unit, of the locking base portion is provided with second tooth portions corresponding to the first tooth portions, and receding grooves are formed in the positions, corresponding to the limiting blocks, of the locking side portions. The operating unit and the locking unit are installed in the pivoting hole of the base unit through the pivoting shaft, the second tooth portion of the locking unit can move away from the belt unit by shifting the operating unit, and the locking device is simple in overall structure, good in structural strength and convenient to produce and manufacture.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of helmet accessories, more particularly to a helmet buckle. BACKGROUND

[0002] The helmet buckle is used for sports helmets (including motorcycle helmets, skiing helmets, etc.), and is a device for fastening / unfastening, length adjustment, etc. of the belt provided to the helmet. In this way, the helmet buckle needs to firmly fix the belt fastened thereto and needs to easily operate the buckle when fastening / unfastening or length adjustment of the belt.

[0003] The prior art CN107307497B discloses a helmet buckle, which comprises a belt unit having a first tooth portion; a base unit for guiding the sliding of the belt unit when the belt unit is introduced or withdrawn; a locking unit pivotally fastened to one side of the base unit and having a second tooth portion on one surface thereof facing the belt unit to correspond to the first tooth portion, the second tooth portion being pushed away from the belt unit; and an operation unit fastened to the other side of the base unit to be movable toward the locking unit, the operation unit being used to pivot the locking unit so that the second tooth portion is moved away from the belt unit when the operation unit is moved toward the locking unit to apply pressure to the locking unit.

[0004] The helmet buckle of the above-mentioned scheme needs to be moved by the operation unit to the locking unit to enable the second tooth portion of the locking unit to be moved away from the belt unit, and the structure is relatively complex, which is not conducive to the simplification of production and manufacturing and the integration and overall structural strength of the helmet buckle structure. SUMMARY

[0005] The utility model overcomes the prior art's insufficient, its structure design is reasonable, the operation unit and the locking unit are installed in the pivot hole of the base unit through a pivot, and the second tooth portion of the locking unit can be moved away from the belt unit by turning the operation unit, the overall structure is relatively simple, the structural strength is good, and production and manufacturing are facilitated.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A helmet buckle comprises a belt unit having a first tooth portion, and further comprises:

[0008] A base unit for guiding the sliding of the belt unit when the belt unit is introduced or withdrawn, and comprising a base bottom and base sides on both sides of the base bottom, and a limiting block is integrally arranged on each of the two base sides;

[0009] The locking unit is pivotally arranged on the two base side portions, and comprises an integrally formed locking seat portion and locking side portions on both sides of the locking seat portion, the locking seat portion has a second tooth portion corresponding to the first tooth portion on the side facing the belt unit, the locking side portions are provided with avoiding grooves corresponding to the positions of the limiting blocks, and an abutting block is formed on one side of the avoiding grooves.

[0010] The operation unit is pivotally arranged on the two base side portions between the two locking side portions, a pivot shaft is arranged through the operation unit, the locking side portions and the base side portions, a torsion spring is arranged in the operation unit and is sleeved on the pivot shaft, one end of the torsion spring is fixed to the operation unit, the other end of the torsion spring abuts below one of the limiting blocks, the operation unit comprises a pivot portion between the locking side portions and a surface cover portion integrally formed with the pivot portion and wider than the pivot portion on both sides, the abutting block abuts below both sides of the surface cover portion, and one side of the pivot portion close to the locking seat portion is provided with an abutting block abutting the flat abutting surface of the arc transition section or the locking seat portion.

[0011] Preferably, the first tooth portion is formed with at least three protruding tooth blocks, and the two protruding tooth blocks close to the base unit are connected with a sliding section.

[0012] Preferably, the second tooth portion is provided with a limiting groove matched with the protruding tooth block, and the limiting groove is provided with a sliding groove matched with the sliding section.

[0013] Preferably, the base side portion is provided with an inspection opening corresponding to the position of the limiting block.

[0014] Preferably, the belt unit is provided with a protective sleeve away from the first tooth portion.

[0015] Preferably, the belt unit, the base unit and the locking unit are all metal pieces.

[0016] The utility model discloses the beneficial effects of:

[0017] The utility model discloses reasonable structure design, and the operation unit and the locking unit are installed in the pivot hole of the base unit through a pivot shaft, and the second tooth portion of the locking unit is moved away from the belt unit by the operation unit, the whole structure is relatively simple, and the structural strength is good, so that production and manufacturing are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic drawing of the embodiment of the utility model;

[0019] Figure 2 It is the explosion drawing of the embodiment of the utility model;

[0020] Figure 3 Fig. 1 is a structural schematic view of a base unit according to an embodiment of the present application;

[0021] Figure 4 Fig. 2 is a structural schematic view of a locking unit and an operating unit according to an embodiment of the present application;

[0022] Figure 5 Fig. 3 is a structural schematic view of the locking unit according to an embodiment of the present application; Figure 1

[0023] Figure 6 Fig. 4 is a structural schematic view of the locking unit according to an embodiment of the present application; Figure 2

[0024] Figure 7 Fig. 5 is a structural schematic view of the operating unit according to an embodiment of the present application.

[0025] In the figure: 1, belt unit; 11, first tooth part; 12, convex tooth block; 121, sliding section; 13, protective sleeve; 2, base unit; 21, base bottom; 22, base side; 23, limiting block; 24, access hole; 3, locking unit; 31, locking seat part; 32, locking side; 33, second tooth part; 331, limiting groove; 332, sliding groove; 34, avoiding groove; 35, abutting block; 36, circular arc transition section; 37, flat abutting surface; 4, operating unit; 41, pivoting part; 42, surface cover part; 43, abutting block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] As Figures 1-7 ​​As shown, a helmet buckle comprises a belt unit 1 with a first tooth part 11, a base unit 2 for guiding the belt unit 1 to slide when the belt unit 1 is introduced or retracted, and comprising a base bottom 21 and base sides 22 on both sides of the base bottom 21, and a limiting block 23 integrally arranged on each of the base sides 22; a locking unit 3 pivotally arranged on the base sides 22, and comprising a locking seat part 31 and locking sides 32 on both sides of the locking seat part 31, the locking seat part 31 having a second tooth part 33 corresponding to the first tooth part 11 on the side facing the belt unit 1, the locking sides 32 being provided with a avoiding slot 34 corresponding to the position of the limiting block 23, and an abutting block 35 formed on one side of the avoiding slot 34, and the locking seat part 31 and the locking sides 32 having a circular arc transition section 36, and the circular arc transition section 36 or the locking seat part 31 being provided with a flat abutting surface 37 on the side end surface facing the belt unit 1; an operation unit 4 pivotally arranged on the base sides 22 between the locking sides 32, and provided with a pivot shaft between the operation unit 4, the locking sides 32 and the base sides 22, and a torsion spring arranged in the operation unit 4 and sleeved on the pivot shaft, one end of the torsion spring being fixed to the operation unit 4 and the other end of the torsion spring abutting below one of the limiting blocks 23, the operation unit 4 comprising a pivot part 41 between the locking sides 32 and a surface cover part 42 integrally formed with the pivot part 41 and wider than the pivot part 41 on both sides, the abutting block 35 abutting below both sides of the surface cover part 42, and a resisting block 43 arranged on the side of the pivot part 41 close to the locking seat part 31 and abutting with the flat abutting surface 37 of the circular arc transition section 36 or the locking seat part 31; the first tooth part 11 is formed with at least three convex tooth blocks 12, and two of the convex tooth blocks 12 close to the base unit 2 are connected with a sliding section 121; the second tooth part 33 is provided with a limiting slot 331 matched with the convex tooth blocks 12, and the limiting slot 331 is provided with a sliding groove 332 matched with the sliding section 121; the base sides 22 are provided with an inspection hole 24 corresponding to the position of the limiting block 23; the belt unit 1 is provided with a protective sleeve 13 away from the first tooth part 11; and the belt unit 1, the base unit 2 and the locking unit 3 are all metal parts.

[0028] By adopting the technical scheme, in the utility model, the operation unit 4 and the locking unit 3 are installed in the pivot hole of the base unit 2 through a pivot shaft (not shown in the figure), and a torsion spring (not shown in the figure) is sleeved on the pivot shaft, one end of the torsion spring is fixed to the operation unit 4, and the other end of the torsion spring is abutted and limited below one of the limiting blocks 23. And, by arranging the flat abutment surface 37 on the circular arc transition section 36 or the locking side 32 of the locking unit 3, which can be arranged on the locking side 32 in the embodiment, by arranging the corresponding abutting block 43 on the pivot part 41 of the operation unit 4, when the locking unit 3 and the operation unit 4 are assembled on the base unit 2, the abutting block 43 will abut on the flat abutment surface 37, and the abutting block 35 on the locking side 32 will abut below the two sides of the surface cover part 42, so that when the operation unit 4 is actuated, due to the abutment of the abutting block 35 and the surface cover part 42 and the abutment of the abutting block 43 and the flat abutment surface 37, the operation unit 4 and the locking unit 3 are linked, that is, the locking unit 3 will also be lifted or lowered with the operation unit 4.

[0029] And when the belt unit 1 is inserted into the base unit 2, the convex tooth block 12 on the first tooth part 11 will be limited in the limiting groove 331 of the second tooth part 33, and under the action of the torsion spring, the locking unit 3 will always abut on the belt unit 1, so that the belt unit 1 cannot be pulled out, and only when the second tooth part 33 is away from the first tooth part 11 after the operation unit 4 is actuated, the belt unit 1 can be pulled out. Wherein, the sliding section 121 is arranged on the convex tooth block 12, and the sliding groove 332 matched with the sliding section 121 is arranged on the limiting groove 331, so that when the two convex tooth blocks 12 are inserted into the second tooth part 33, the sliding section 121 can slide in the sliding groove 332, so that the pulling out of the belt unit 1 is allowed, facilitating the user to perform actual use operation.

[0030] Furthermore, by arranging the belt unit 1, the base unit 2 and the locking unit 3 as metal pieces, the locking force between the belt unit 1 and the locking unit 3 is better, and the torsion spring has good connection stability when abutting on the limiting block 23 of the base unit 2, so that the locking effect of the whole product is better, and the safety when the product is used with the helmet is ensured.

[0031] The above merely describes a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A helmet buckle, comprising: The belt unit (1) having a first tooth (11) is characterized in that it further comprises: The base unit (2) is used to guide the belt unit (1) to slide when the belt unit (1) is introduced or retracted, and includes an integrally formed base bottom (21) and base sides (22) located on both sides of the base bottom (21), with limit blocks (23) integrally provided on both base sides (22). The locking unit (3) is pivotally disposed on the two base sides (22) and includes an integrally formed locking seat (31) and locking side (32) located on both sides of the locking seat (31). The locking seat (31) has a second tooth (33) corresponding to the first tooth (11) on the side facing the belt unit (1). The locking side (32) is provided with a relief groove (34) at the position corresponding to the limiting block (23). The locking unit (3) has an abutment block (35) formed on one side of the relief groove (34). There is an arc transition section (36) between the locking seat (31) and the locking side (32). The arc transition section (36) or the side end face of the locking seat (31) facing the belt unit (1) is configured as a flat abutment surface (37). The operating unit (4) is pivotally disposed between the two locking sides (32) and the two base sides (22). A pivot shaft passes through the operating unit (4), the locking sides (32) and the base sides (22). A torsion spring is installed inside the operating unit (4). The torsion spring is sleeved on the pivot shaft. One end of the torsion spring is fixed to the operating unit (4). The other end of the torsion spring abuts against the lower part of one of the limiting blocks (23). The operating unit (4) includes a pivot part (41) located between the locking sides (32) and a cover part (42) integrally formed with the pivot part (41) and wider on both sides than the pivot part (41). Abutting blocks (35) abut against the lower sides of the cover part (42). Abutting block (43) is provided on the side of the pivot part (41) near the locking seat part (31) to abut against the arc transition section (36) or the flat abutting surface (37) of the locking seat part (31).

2. A helmet buckle according to claim 1, characterized in that, At least three protruding tooth blocks (12) are formed on the first tooth (11), and a sliding section (121) is connected between the two protruding tooth blocks (12) near the base unit (2).

3. A helmet buckle according to claim 2, characterized in that, The second tooth (33) is provided with a limiting groove (331) that cooperates with the protruding tooth block (12), and the limiting groove (331) is provided with a sliding groove (332) that is adapted to the sliding section (121).

4. A helmet buckle according to claim 1, 2, or 3, characterized in that, The base side (22) is provided with an inspection port (24) at the position corresponding to the limiting block (23).

5. A helmet buckle according to claim 4, characterized in that, A protective sleeve (13) is provided at a position away from the first tooth (11) of the unit (1).

6. A helmet buckle according to claim 4, characterized in that, The belt unit (1), base unit (2) and locking unit (3) are all constructed as metal parts.

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