A helmet

Abstract

This utility model relates to a helmet, comprising: an outer shell, the inner wall of which defines a first cavity with an open bottom; an inner liner disposed within the outer shell, with the outer wall facing the inner wall of the outer shell, the inner wall of the inner liner defining a second cavity with an open bottom for placing the user's head therein; a portion of the outer wall of the inner liner near its bottom edge is spaced apart from the corresponding inner wall of the outer shell to form a slot with a bottom opening, at least one of the two side walls of the slot having a first engaging portion; and further comprising: a vertically arranged spring piece inserted into the slot from the bottom opening, the side of the spring piece having a second engaging portion, the portion of the spring piece having at least the second engaging portion being clamped between the two side walls of the slot under its own elastic force, such that the second engaging portion on the spring piece and the first engaging portion of the slot maintain an engaging posture. This utility model eliminates the need for glue fixation and can adapt to assembly problems with different gaps between the outer shell and the inner liner.

Description

Technical Field

[0001] This utility model belongs to the technical field of head safety protection devices, specifically relating to a helmet. Background Technology

[0002] Helmets, as a commonly used head safety protection device, generally consist of an outer shell and an inner liner. Specific examples include the structures disclosed in Chinese utility model patents such as "A Safety Helmet with Warning Function" (application number CN201020033129.X, authorization announcement number CN201733938U) and "A Safety Helmet and Intelligent Protection System for Power Construction" (application number CN202120939784.X, authorization announcement number CN215189619U).

[0003] Existing technologies typically use adhesive bonding to secure the inner liner and outer shell, making it difficult to perform a second, non-destructive disassembly. Furthermore, the gap between the inner liner and outer shell may vary between different helmets, and current technology struggles to accommodate assembly issues with varying gaps, posing a risk of accidental detachment between the inner liner and outer shell during transportation and use. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a helmet that does not require glue for fixing and can adapt to different gaps between the outer shell and the inner liner, in light of the current state of the technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a helmet, comprising:

[0006] The outer shell, the inner wall of which defines a first cavity with an open bottom;

[0007] A liner is provided inside the outer shell, with the outer wall surface of the liner facing the inner wall surface of the outer shell. The inner wall surface of the liner defines a second cavity with an open bottom for placing the user's head therein.

[0008] Its features are:

[0009] The portion of the outer wall surface of the liner near its bottom edge is arranged at intervals with the inner wall surface of the corresponding outer shell to form a slot with a bottom opening. The outer wall surface of the liner and the inner wall surface of the corresponding outer shell are the two side walls of the slot, and at least one of the two side walls is provided with a first snap-fit ​​portion.

[0010] It also includes:

[0011] A vertically arranged spring is inserted into the slot through the bottom opening, and the side of the spring is provided with a second locking part that cooperates with the first locking part. At least the part of the spring where the second locking part is located is clamped between the two side walls of the slot under its own elastic force, so that the second locking part on the spring and the first locking part of the slot maintain a locking posture.

[0012] By setting a slot and a spring clip, the spring clip is inserted into the slot formed by the outer wall surface of the inner liner and the corresponding inner wall surface of the outer shell. Under its own elastic force, it is clamped between the two side walls of the slot (i.e., the outer wall surface of the inner liner and the corresponding inner wall surface of the outer shell). The second engaging part on the spring clip engages with the first engaging part on the side wall surface of the slot to restrain the outer shell and the inner liner together without the need for additional glue fixation. When the outer shell and the inner liner tend to separate, the spring clip clamped between them can prevent them from separating. At the same time, as the distance between the two side walls of the slot changes, the spring clip can undergo elastic deformation and maintain the posture clamped by the two side walls of the slot, thereby adapting to the assembly problem of different gaps between the two side walls of the slot, that is, the outer wall surface of the inner liner and the corresponding inner wall surface of the outer shell.

[0013] Preferably, the spring includes:

[0014] A sheet-like body is inserted into the slot, and the sheet-like body has a vertically extending strip-shaped hole in the center;

[0015] The tongue, with its upper end integrally connected to the upper edge of the slotted hole and its lower end being a free end, always tends to rotate outward relative to the slotted hole and approach the side wall where the first engaging part is located on the slot under the action of elastic force. The tongue also has the aforementioned second engaging part on its side. The slotted hole design provides sufficient elastic deformation space for the tongue. By manually pushing the tongue inward, so that it is positioned within the slotted hole, the second engaging part on the tongue can be released from the constraint of the first engaging part. Then, by pulling the spring downward, the spring can be removed from the slot, thereby allowing the inner liner to detach from the outer shell.

[0016] Preferably, the lower edge of the sheet-like body is provided with a stop strip, and the upper surface of the stop strip contacts the bottom opening edge of the slot. This further prevents the inner liner from detaching from the outer shell.

[0017] To achieve the engagement of the first and second engaging parts, preferably, the side wall of the slot is provided with a first protrusion as the first engaging part; the side of the spring piece is provided with a second protrusion as the second engaging part, and the second protrusion is supported on the first protrusion to achieve engagement. Alternatively, a structure in which a buckle and a slot cooperate can also be used to achieve engagement.

[0018] Furthermore, there are at least two first protrusions, which are arranged at intervals in the vertical direction; the number of second protrusions is the same as the number of first protrusions, and each second protrusion is arranged at intervals in the vertical direction and is supported on its corresponding first protrusion.

[0019] Preferably, the outer wall surface of the liner is recessed near its bottom edge to form the aforementioned groove with the inner wall surface of the outer shell, and the first snap-fit ​​portion is provided on the inner wall surface of the outer shell.

[0020] In the above embodiments, preferably, the slot is located on the rear side of the liner, and the front side of the liner is detachably bound to the outer shell.

[0021] Preferably, the inner wall surface on the front side of the outer casing is provided with a circumferentially extending support strip for the bottom edge of the lining to be supported thereon.

[0022] During assembly, first support the bottom edge of the inner liner on the support strip of the outer shell, and then insert the spring clip into the slot.

[0023] Preferably, there are at least two support bars, which are arranged at circumferential intervals.

[0024] Compared with the prior art, the advantages of this utility model are as follows: By setting a slot and a spring piece, the spring piece is inserted into the slot formed by the outer wall surface of the inner liner and the inner wall surface of the corresponding outer shell, and is clamped between the two side walls of the slot (i.e., the outer wall surface of the inner liner and the inner wall surface of the corresponding outer shell) under its own elastic force. The second engaging part on the spring piece engages with the first engaging part on the side wall surface of the slot to constrain the outer shell and the inner liner together without the need for additional glue fixation; and when the outer shell and the inner liner tend to separate, the spring piece clamped between them can prevent them from separating. At the same time, as the distance between the two side walls of the slot changes, the spring piece can undergo elastic deformation and maintain the posture of being clamped by the two side walls of the slot, thereby adapting to the assembly problem of different gaps between the two side walls of the slot, that is, the outer wall surface of the inner liner and the inner wall surface of the corresponding outer shell. Attached Figure Description

[0025] Figure 1 This is a partial structural schematic diagram of an embodiment of the present utility model (spring contacts omitted);

[0026] Figure 2 This is an exploded perspective view of an embodiment of the present utility model;

[0027] Figure 3 This is a cross-sectional view of an embodiment of the present utility model;

[0028] Figure 4 for Figure 3 Enlarged view of section A;

[0029] Figure 5 This is a schematic diagram of the spring sheet structure in an embodiment of this utility model;

[0030] Figure 6 This is another cross-sectional view of an embodiment of the present utility model. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] like Figures 1-6 As shown, this is a preferred embodiment of a helmet according to the present invention. The helmet includes an outer shell 1, an inner liner 2, and a spring clip 3.

[0033] The outer shell 1 is made of rigid material, and its inner wall defines a first cavity 10 with an open bottom. The inner wall of the front side of the outer shell 1 is provided with a circumferentially extending support bar 11. There are two support bars 11, which are arranged at intervals along the circumference.

[0034] The inner liner 2 is disposed inside the outer shell 1, with its outer wall facing the inner wall of the outer shell 1. The inner wall of the inner liner 2 defines a second cavity 20 with an open bottom for the user's head to be placed therein. Simultaneously, the bottom edge of the front side of the inner liner 2 is supported on a support strip 11. The portion of the rear outer wall of the inner liner 2 near its bottom edge is recessed, forming a slot 100 with a bottom opening between it and the corresponding inner wall of the outer shell 1. The outer wall of the inner liner 2 and the corresponding inner wall of the outer shell 1 are the two side walls of the slot 100. One side wall of the slot 100 (the corresponding inner wall of the outer shell 1) has a first protrusion as a first engaging portion 110, and there are two first protrusions arranged alternately, one above the other.

[0035] A vertically arranged spring piece 3 is inserted into the slot 100 through its bottom opening. The side of the spring piece 3 has a second engaging portion 321 that mates with the first engaging portion 110. At least the portion of the spring piece 3 containing the second engaging portion 321 is clamped between the two side walls of the slot 100 under its own elastic force, thus maintaining the engagement between the second engaging portion 321 on the spring piece 3 and the first engaging portion 110 of the slot 100. In this embodiment, the spring piece 3 includes a sheet-like body 31 and a tongue 32. The sheet-like body 31 is inserted into the slot 100, and the center of the sheet-like body 31 has a vertically extending strip-shaped hole 310. The lower edge of the sheet-like body 31 has a stop strip 311, and the upper surface of the stop strip 311 contacts the edge of the bottom opening of the slot 100. The upper end of the tongue 32 is integrally connected to the upper edge of the slot 310, and the lower end of the tongue 32 is a free end. Under the action of elasticity, the tongue 32 always tends to rotate outward relative to the slot 310 and approach the side wall of the first engaging part 110 on the slot 100. The side of the tongue 32 is provided with a second protrusion as the aforementioned second engaging part 321. There are two second protrusions, arranged one above the other, and each second protrusion is supported on its corresponding first protrusion to achieve engagement. To facilitate the engagement of the first and second protrusions, in this embodiment, as shown... Figure 4 As shown, the lower surface of the first protrusion and the upper surface of the second protrusion are inclined surfaces that slope downwards from the inside to the outside, so that when the tongue is inserted into the slot upwards, the second protrusion can pass over the first protrusion and be supported on the first protrusion.

[0036] During assembly, first place the inner liner 2 inside the outer shell 1. The bottom edge of the inner liner 2 is supported on the support strip 11 on the inner wall of the outer shell 1. Then insert the spring clip into the slot between the inner liner and the outer shell 1 for easy operation.

[0037] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0038] The term "vertical" is also used in the specification and claims of this utility model, meaning basically along the up and down direction, and is not limited to just the vertical direction, but can also be slightly deviated from the vertical direction.

Claims

1. A helmet, comprising: The outer shell (1) has an inner wall surface that defines a first cavity (10) with an open bottom. The inner liner (2) is disposed inside the outer shell (1), and the outer wall surface of the inner liner (2) faces the inner wall surface of the outer shell (1). The inner wall surface of the inner liner (2) defines a second cavity (20) with an open bottom for placing the user's head therein. Its features are: The portion of the outer wall surface of the liner (2) near its bottom edge is arranged at intervals with the inner wall surface of the corresponding outer shell (1) to form a slot (100) with a bottom opening. The outer wall surface of the liner (2) and the inner wall surface of the corresponding outer shell (1) are the two side walls of the slot, and at least one of the two side walls is provided with a first snap-fit ​​portion (110). It also includes: A vertically arranged spring piece (3) is inserted into the slot (100) from the bottom opening, and the side of the spring piece (3) is provided with a second locking part (321) that cooperates with the first locking part (110). At least the part of the spring piece (3) where the second locking part (321) is located is clamped between the two side walls of the slot (100) under its own elastic force, so that the second locking part (321) on the spring piece (3) and the first locking part (110) of the slot (100) maintain a locking posture.

2. The helmet according to claim 1, characterized in that: The spring clip (3) includes: A sheet-like body (31) is inserted into the slot (100), and the sheet-like body (31) has a vertically extending strip hole (310) in the center; The tongue (32) is connected to the upper edge of the strip hole (310) at its upper end and is free at its lower end. Under the action of elastic force, the tongue (32) always tends to rotate outward relative to the strip hole (310) and approach the side wall of the first snap-fit ​​part (110) on the slot (100). The side of the tongue (32) is provided with the aforementioned second snap-fit ​​part (321).

3. The helmet according to claim 2, characterized in that: The lower edge of the sheet-like body (31) is provided with a baffle (311), and the upper surface of the baffle (311) contacts the bottom opening edge of the slot (100).

4. The helmet according to claim 1, characterized in that: The side wall of the slot (100) is provided with a first protrusion as the first engaging part (110) mentioned above; the side of the spring piece (3) is provided with a second protrusion as the second engaging part (321) mentioned above, and the second protrusion is supported on the first protrusion to achieve engagement.

5. The helmet according to claim 4, characterized in that: There are at least two first protrusions, which are arranged at intervals in the vertical direction; the number of second protrusions is the same as the number of first protrusions, and each second protrusion is arranged at intervals in the vertical direction and is supported on its corresponding first protrusion.

6. The helmet according to claim 1, characterized in that: The outer wall surface of the liner (2) near its bottom edge is recessed to form the aforementioned slot (100) with the inner wall surface of the outer shell (1), and the first snap-fit ​​part (110) is provided on the inner wall surface of the outer shell (1).

7. The helmet according to any one of claims 1 to 6, characterized in that: The slot (100) is located on the rear side of the liner (2), and the front side of the liner (2) is detachably bound together with the outer shell (1).

8. The helmet according to claim 7, characterized in that: The inner wall surface of the front side of the outer shell (1) is provided with a circumferentially extending support strip (11) for the bottom edge of the inner lining (2) to be supported thereon.

9. The helmet according to claim 8, characterized in that: There are at least two support bars (11), which are arranged at intervals along the circumference.

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