Safety belt mortise lock

Abstract

The utility model relates to a safety belt mortise lock which comprises a shell and at least one light-emitting device, the shell defines an insertion opening, each light-emitting device comprises a light-emitting assembly and a diffuser, the diffuser is adjacent to the light-emitting assembly, the light-emitting assembly is used for emitting light, and the light-emitting assembly is used for emitting light. The diffuser is used for conducting light emitted by the light-emitting assembly to the position close to the insertion opening and diffusing the light outwards. The safety belt mortise lock is simple in structure and simpler and more convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile passive safety devices, and more specifically to a safety belt latch. Background Art

[0002] At present, three-point safety belts have been widely used in vehicles. The safety belt latch is a part of the vehicle safety belt and is fixed to the vehicle body. The locking tongue can be inserted into the safety belt latch, and the locking tongue and the safety belt are locked when the vehicle slows down or collides. When the safety belt needs to be unfastened, the locking tongue can also be released.

[0003] In low-light environments (e.g., at night, in a basement, etc.), wearing a seat belt often requires groping. In order to facilitate wearing of a seat belt, a seat belt latch with a light-emitting device is already provided in the prior art. The light-emitting device is used to emit light to mark the insertion opening of the latch, thereby providing guidance in the dark and improving the convenience of wearing a seat belt.

[0004] The existing light emitting device of the safety belt latch usually includes a light emitting assembly, a diffuser and a light guide, which are separately installed on the housing of the latch, and the assembly thereof is relatively complicated. Utility Model Content

[0005] The utility model aims to provide a safety belt latch which has a simple structure and is easier to assemble.

[0006] Based on the above purpose, the utility model provides a seat belt latch, including a shell and at least one light-emitting device, the shell defines an insertion opening, each of the light-emitting devices includes a light-emitting component and a diffuser, the diffuser is adjacent to the light-emitting component, the light-emitting component is used to emit light, and the diffuser is used to conduct the light emitted by the light-emitting component to the vicinity of the insertion opening and diffuse the light outward.

[0007] Further, the light diffused by the diffuser is formed into a light mark for indicating the position of the insertion opening.

[0008] Further, the housing includes a first housing and a second housing that are detachably fixed, the first housing has a protrusion, the insertion opening is defined by the protrusion, and the diffuser is fixed to the protrusion.

[0009] Further, a first cavity is formed between the first shell and the second shell, the protrusion defines a second cavity, the first cavity and the cavity are connected to each other, the insertion opening is a part of the second cavity, and the light-emitting component is located in the first cavity.

[0010] Furthermore, at least one accommodating groove is provided on the protruding portion, and the diffusers of the light-emitting components are respectively fixed in the accommodating grooves.

[0011] Furthermore, a limiting groove is provided on the diffuser, and a protrusion is provided in the receiving groove, and the protrusion cooperates with the limiting groove to limit the diffuser fixed in the receiving groove.

[0012] Furthermore, the light emitting assembly includes a circuit board and at least one light source, wherein the light source is disposed on the circuit board and is adjacent to the diffuser.

[0013] Furthermore, the diffuser includes an inlet portion and an outlet portion, the inlet portion is provided with at least one inlet surface, each inlet surface is adjacent to a light source, so that the light emitted by the light source is incident on the inlet portion from the inlet surface adjacent to it, and is transmitted from the inlet portion to the outlet portion, and is emitted from the outlet portion.

[0014] Furthermore, there is a gap between the light source and the adjacent introduction surface.

[0015] Furthermore, the introduction surface is provided with a tooth-shaped structure or a V-shaped structure.

[0016] Further, the width of the introduction portion perpendicular to the insertion direction is configured to gradually decrease along the insertion direction.

[0017] Furthermore, it also includes a decorative cover, which is fixedly connected to the first shell and covers the side surface of the protrusion.

[0018] Furthermore, there is one light emitting device, and a diffuser of the light emitting device is fixed on a first side of the protrusion, the first side is adjacent to the insertion opening, and the light emitting component is fixed on the second shell.

[0019] Furthermore, there is one light emitting device, and a diffuser of the light emitting device is fixed on the second side of the protrusion, and the light emitting component is fixed on the first shell.

[0020] Furthermore, there are two light emitting devices, and a diffuser of one of the light emitting devices is fixed on the third side of the protrusion, and a diffuser of the other light emitting device is fixed on the fourth side of the protrusion, and the third side is arranged opposite to the fourth side.

[0021] The light emitting device of the safety belt latch of the utility model only comprises a light emitting assembly and a diffuser, and has a simple structure. During assembly, the diffuser only needs to be inserted into the receiving groove of the protruding portion of the first shell, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a safety belt latch according to Embodiment 1 of the present utility model;

[0023] Figure 2 This is an exploded view of a safety belt latch according to Embodiment 1 of the present utility model, in which the mechanical device is removed;

[0024] Figure 3 This is a schematic diagram of the internal structure of the housing of the safety belt latch according to the first embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of a light emitting device according to the first embodiment of the utility model;

[0026] Figure 5 It is an orthographic projection diagram of the first housing along the insertion direction according to the first embodiment of the utility model;

[0027] Figure 6 It is a schematic diagram of the installation relationship between the second housing and the circuit board according to the first embodiment of the utility model;

[0028] Figure 7 It is a structural schematic diagram of a seat belt latch according to Embodiment 2 of the utility model after removing the second housing from a viewing angle;

[0029] Figure 8 It is a structural schematic diagram of another perspective of the safety belt latch after removing the second shell according to the second embodiment of the utility model;

[0030] Fig. 9 This is a schematic diagram of the structure of the safety belt latch after the second housing is removed according to the third embodiment of the utility model;

[0031] Fig.10 For insertion direction Fig. 9 Schematic diagram of the seat belt latch after cutting. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present utility model are given below in conjunction with the accompanying drawings and described in detail.

[0033] Embodiment 1

[0034] like Figure 1 , Figure 2 and Figure 3As shown, the first embodiment of the utility model provides a seat belt latch, including a housing 100, a mechanical device is arranged in the housing 100, the housing 100 defines an insertion opening 110, the locking tongue of the seat belt (not shown in the figure) can be inserted into the housing 100 from the insertion opening 110, and then the mechanical device in the housing 100 can lock it, so that it is fixed on the seat belt latch; the mechanical device includes a button 210 for unlocking, when the button 210 is pressed, the mechanical device will disengage the locking tongue, so that the locking tongue is disconnected from the mechanical device, and then the locking tongue can leave the seat belt latch from the insertion opening 110, so as to unfasten the seat belt. Since the mechanical device is a conventional device applied to the seat belt latch, its specific structure and working principle are well known in the art and will not be described here.

[0035] The seat belt latch also includes a light emitting device 300, which is used to form a light mark in the vicinity of the insertion opening 110. The light mark is used to indicate the position of the insertion opening 110 so that the occupant can quickly find the insertion opening 110, thereby conveniently realizing the wearing of the seat belt.

[0036] The light emitting device 300 may include a light emitting component 310 and a diffuser 320. The light emitting component 310 is used to emit light. The diffuser 320 is adjacent to the light emitting component 310 and is used to transmit the light emitted by the light emitting component 310 to the vicinity of the insertion opening 110 and diffuse the light outward to form a uniform light mark so that the light mark can be easily seen by the occupants.

[0037] The housing 100 may include a first housing 120 and a second housing 130, which are detachably fixed together, the first housing 120 having a protrusion 121, the protrusion 121 being located at the front end of the first housing 120, the insertion opening 110 being defined by the protrusion 121, and the diffuser 320 being fixed on the protrusion 121. The tail ends of the first housing 120 and the second housing 130 are formed as the tail end of the housing 100, and the front end of the first housing 120 is formed as the front end of the housing 100, wherein the front end of the housing 100 refers to the end where the insertion opening 110 is located, and the tail end refers to the end away from the insertion opening 110, the tail end of the housing 100 is fixed to the vehicle body, and the front end of the housing 100 is a free end, and the housing 100 can rotate relative to the fixing point between the housing 100 and the vehicle body, so as to adapt to the position of the lock tongue of the safety belt, so that the lock tongue can be more conveniently inserted into the insertion opening 110 at the front end of the housing 100.

[0038] A first cavity 140 is formed between the first shell 120 and the second shell 130, and the protrusion 121 defines the second cavity 122. The first cavity 140 and the second cavity 122 are connected to each other. The mechanical device is arranged in the first cavity 140, and its button 210 extends into the second cavity 122. The space between the button 210 and the protrusion 121 of the first shell 120 is formed as an insertion opening 110; that is, the button 210 will occupy a part of the second cavity 122, and the insertion opening 110 is the rest of the second cavity 122.

[0039] The light-emitting component 310 is located in the first cavity 140, and a receiving groove 123 may be provided on the protrusion 121, and the receiving groove 123 extends along the insertion direction of the seat belt lock tongue. The diffuser 320 is installed in the receiving groove 123, and one end of the diffuser 320 is basically flush with the front end surface of the protrusion 121, and the other end extends along the insertion direction to be adjacent to the light-emitting component 310.

[0040] The diffuser 320 can be fixed to the first side of the protrusion 121 (i.e., the side away from the button 210 and opposite to the button 210) so that the diffuser 320 is adjacent to the insertion opening 110, so that the light emitted from the diffuser 320 can indicate the position of the insertion opening 110, making it easy for passengers to see.

[0041] like Figure 4 As shown, the light-emitting component 310 may include a circuit board 311 and at least one light source 312 (for example, an LED lamp), the light source 312 is disposed on the circuit board 311 (for example, it may be connected to the circuit board 311 by welding or by a wiring harness), and the diffuser 320 may be divided into two parts, namely an inlet portion 321 and an outlet portion 322, an end of the outlet portion 322 away from the inlet portion 321 is substantially flush with the front end surface of the protrusion 121, and an end of the inlet portion 321 away from the outlet portion 322 is adjacent to the light-emitting component 310. At least one introduction surface 3211 is provided on the introduction portion 321, and the introduction surfaces 3211 correspond to the light sources 312 one by one. Each introduction surface 3211 is adjacent to the corresponding light source 312. The circuit board 311 is used to supply power to the light source 312 so that the light source 312 is used to emit light. The light emitted by the light source 312 is incident on the introduction portion 321 from the introduction surface 3211 adjacent to it, and then transmitted from the introduction portion 321 to the exit portion 322, and then emitted from the front end surface of the exit portion 322 to form a uniform light mark. Through the light mark, the position of the insertion opening 110 can be indicated, so that it can be easily found by the occupants.

[0042] The number of light sources 312 can be set as needed, and can be one or more. A plurality of light sources 312 can obtain a better light emission effect. Exemplarily, the light source 312 includes two, and correspondingly, the number of introduction surfaces 3211 is also two, and the two light sources 312 are respectively adjacent to and opposite to the two introduction surfaces 3211 to obtain a better light emission effect.

[0043] The light source 312 and the introduction portion 321 may not be in contact with each other but may have a certain gap therebetween to obtain a better light emission effect.

[0044] The introduction surface 3211 may be provided with a toothed structure, a V-shaped structure or any other suitable structure, which may better guide the light from the light source 312 so as to make the effect of the light emitted from the diffuser 320 more continuous and better.

[0045] The width of the introduction portion 321 perpendicular to the insertion direction can be set to gradually decrease along the insertion direction to form a structure that is wide at the front and narrow at the back, so that the light emitted by the light source 312 can be better diffused to the emission portion 322 through the introduction portion 321.

[0046] The front end of the exit portion 322 can be formed as an extension portion 323 extending outward in the thickness direction, the thickness of the extension portion 323 is greater than the thickness of the remaining parts, the accommodating groove 123 is a contoured groove of the diffuser 320, and its shape and structure are exactly the same as the shape and structure of the diffuser 320. By cooperating with the extension portion 323 and the accommodating groove 123, the diffuser 330 can be limited to prevent the diffuser 320 from escaping from the accommodating groove 123.

[0047] The diffuser 320 may be provided with a limiting groove 324 (such as Figure 4 As shown, it can be opened on the introduction part 321), such as Figure 5 As shown, a protrusion 124 is provided in the receiving groove 123, and the protrusion 124 cooperates with the limiting groove 324 to limit the diffuser 320. Specifically, during installation, the diffuser 320 is inserted into the receiving groove 123 along the insertion direction. As the diffuser 320 is inserted, the protrusion 124 will be inserted into the limiting groove 324 and abut against the diffuser 320 to prevent it from further moving along the insertion direction, thereby achieving the positioning of the diffuser 320.

[0048] The diffuser 320 may be made of a transparent material, a semi-transparent material, or any other suitable material as long as light can be transmitted. For example, the diffuser 320 may be made of a polycarbonate (PC) material.

[0049] The circuit board 311 can be fixed on the second housing 130. For example, Figure 6As shown, at least one positioning column 131 may be provided on the second shell 130, and a positioning hole 3111 matching with the positioning column 131 may be provided on the circuit board 311, and each positioning column 131 passes through each positioning hole 3111 respectively, and then the circuit board 311 and each positioning column 131 are welded and fixed together.

[0050] like Figure 1 As shown, the seat belt latch may also include a decorative cover 400, which is fixedly connected to the first shell 120 and covers the side of the protrusion 121. The decorative cover 400, the first shell 120 and the second shell 130 are all made of opaque material, so that the light from the side is blocked by the decorative cover 400, the first shell 120 and the second shell 130, so that the light can only be emitted from the front end surface of the diffuser 320 to better guide the position of the insertion opening 110; on the other hand, the decorative cover 400 can also play a beautifying role.

[0051] The decorative cover 400 may be fixedly connected to the first housing 120 by snapping, welding or any other suitable method. For example, the decorative cover 400 may be provided with at least one buckle 410, and the first housing 120 may be provided with at least one slot, and the buckle 410 is inserted into the slot, so that the decorative cover 400 is fixedly connected to the first housing 120.

[0052] The circuit board 311 may be provided with a light-emitting circuit, and the light-emitting circuit may be connected to an electronic controller (ECU) so as to realize the light-emitting control of the light source 312 through the ECU. For example, when the locking tongue of the seat belt is not inserted, the light source 312 may emit light of a first color (e.g., red) to form a light mark of the first color, and the occupant may conveniently find the insertion opening 110 through the light mark. When the locking tongue of the seat belt is inserted, an insertion signal may be sent to the ECU through a sensor pre-set on the mechanical device, and then the ECU controls the light source 312 to turn off or emit light of a second color (e.g., green) to turn off the light mark or form a light mark of the second color.

[0053] In the safety belt latch of the first embodiment of the present invention, the light emitting device 300 only includes a light emitting assembly 310 and a diffuser 320, and has a simple structure. During assembly, the diffuser 320 only needs to be inserted into the receiving groove 123 of the protrusion 121 of the first shell 120, which is very convenient.

[0054] Embodiment 2

[0055] like Figure 7 and Figure 8As shown, the second embodiment of the present invention provides a safety belt latch, which differs from the first embodiment only in that the diffuser 320 is installed at a different position on the protrusion 121. Specifically, the diffuser 320 of the first embodiment is installed on the first side of the protrusion 121 so that the diffuser 320 is adjacent to the insertion opening 110, while the diffuser 320 of the second embodiment is installed on the second side of the protrusion 121 opposite to the first side, so that the diffuser 320 is closer to the button 210; in order to cooperate with the diffuser 320, the light emitting assembly 310 of this embodiment is also fixed to the first housing 120 instead of being fixed to the second housing 130.

[0056] In this embodiment, the structure of the diffuser 320 is the same as that of the diffuser in the first embodiment, and the matching mode between the diffuser 320 and the protrusion 121 is also the same as that of the first embodiment, that is, the diffuser 320 is located in the receiving groove 123, and the receiving groove 123 may be provided with a protrusion 124.

[0057] In the seat belt latch of the embodiment of the utility model, the light emitting device 300 only includes a light emitting assembly 310 and a diffuser 320, and has a simple structure. During assembly, it is only necessary to insert the diffuser 320 into the receiving groove 123 of the protrusion 121 of the first shell 120, which is very convenient.

[0058] Embodiment 3

[0059] Embodiment 3 of the present invention provides a seat belt latch, which differs from Embodiment 1 in that the seat belt latch of Embodiment 3 includes a plurality of light emitting devices 300, each of which is mounted at a different position of the housing 100 to form light marks at a plurality of different positions, thereby providing more guidance for inserting the opening 110.

[0060] For example, Fig. 9 and Fig.10 As shown, the light-emitting device 300 includes two light-emitting devices 300, and the two diffusers 320 of the two light-emitting devices 300 are respectively fixed on the third side and the fourth side of the protrusion 121, wherein the third side and the fourth side are arranged opposite to each other, and the third side and the fourth side are both adjacent to the first side and the second side; the two light-emitting components 310 are fixed on the first shell 120 and are respectively adjacent to the two diffusers 320.

[0061] Similar to the first embodiment, the diffuser 320 of this embodiment is fixed by cooperating with the contoured receiving groove on the protrusion 121 . Therefore, in this embodiment, the protrusion 121 is also provided with a plurality of receiving grooves, which correspond one to one with each diffuser 320 .

[0062] When there are multiple light emitting devices 300 , the length of the diffuser 320 may be slightly shorter than that of the diffuser 320 in the first and second embodiments.

[0063] The safety belt latch of the third embodiment of the present invention forms a plurality of light marks through a plurality of light emitting devices 300 to indicate the position of the insertion opening 110 , which has a better effect.

[0064] It should be noted that the utility model (e.g., utility model concepts, etc.) has been described in the specification of this patent document and / or illustrated in the drawings according to exemplary embodiments; the embodiments of the utility model are presented only by way of example and are not intended to limit the scope of the utility model. The structure and / or arrangement of the elements of the utility model concepts embodied in the utility model as described in the specification and / or illustrated in the drawings are merely illustrative. Although exemplary embodiments of the utility model have been described in detail in this patent document, it is easy for a person of ordinary skill in the art to understand that equivalents, modifications, variations, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the utility model; all of these subject matters (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the utility model. It should also be noted that various / other modifications, changes, substitutions, equivalents, changes, omissions, etc. can be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concepts, designs, structures, devices, forms, assemblies, constructions, means, functions, systems, processes / methods, steps, the order of process / method steps, operations, operating conditions, performances, materials, compositions, combinations, etc.) without departing from the scope of the present invention; all of these subjects (e.g., modifications, changes, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. The scope of the present invention is not intended to be limited to the subject matter described in the specification and / or drawings of this patent document (e.g., details, structures, functions, materials, behaviors, steps, sequences, systems, results, etc.). Considering that the claims of this patent document will be appropriately interpreted as covering the full scope of the subject matter of the present invention (e.g., including any and all such modifications, changes, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in this patent document are intended to provide a description of the subject matter of the exemplary embodiments, rather than as a limitation on the scope of the present invention.

[0065] It should also be noted that, according to the exemplary embodiments, the present invention may include conventional technologies (such as technologies implemented and / or integrated in the exemplary embodiments, modifications, changes, combinations, equivalents), or may include any other applicable technologies (now and / or in the future) with the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All of these technologies (such as technologies implemented in embodiments, modifications, changes, combinations, equivalents, etc.) are considered to be within the scope of the present invention of this patent document.

Claims

1. A seat belt latch, characterized in that: The invention comprises a shell and at least one light emitting device, wherein the shell defines an insertion opening, each of the light emitting devices comprises a light emitting component and a diffuser, wherein the diffuser is adjacent to the light emitting component, the light emitting component is used to emit light, and the diffuser is used to conduct the light emitted by the light emitting component to the vicinity of the insertion opening and diffuse the light outward.

2. The seat belt latch according to claim 1, characterized in that: The light diffused by the diffuser is formed into a light mark for indicating the position of the insertion opening.

3. The seat belt latch according to claim 1, characterized in that: The housing includes a first housing and a second housing that can be detachably fixed, the first housing having a protrusion, the insertion opening being defined by the protrusion, and the diffuser being fixed to the protrusion.

4. The seat belt latch according to claim 3, characterized in that: A first cavity is formed between the first shell and the second shell, the protrusion defines a second cavity, the first cavity and the cavity are connected to each other, the insertion opening is a part of the second cavity, and the light emitting component is located in the first cavity.

5. The seat belt latch according to claim 3, characterized in that: The protruding portion is provided with at least one accommodating groove, and the diffusers of each light-emitting component are respectively fixed in each accommodating groove.

6. The seat belt latch according to claim 5, characterized in that: The diffuser is provided with a limiting groove, and the containing groove is provided with a protrusion, and the protrusion cooperates with the limiting groove to limit the diffuser fixed in the containing groove.

7. The seat belt latch according to claim 1, characterized in that: The light emitting assembly includes a circuit board and at least one light source, wherein the light source is disposed on the circuit board and is adjacent to the diffuser.

8. The seat belt latch according to claim 7, characterized in that: The diffuser includes an inlet portion and an outlet portion, wherein the inlet portion is provided with at least one inlet surface, and each inlet surface is adjacent to a light source, so that the light emitted by the light source is incident on the inlet portion from the inlet surface adjacent to the light source, and is transmitted from the inlet portion to the outlet portion, and is emitted from the outlet portion.

9. The seat belt latch according to claim 8, characterized in that: There is a gap between the light source and the adjacent introduction surface.

10. The seat belt latch according to claim 8, characterized in that: The introduction surface is provided with a tooth-shaped structure or a V-shaped structure.

11. The seat belt latch according to claim 8, characterized in that: The width of the introduction portion perpendicular to the insertion direction is configured to gradually decrease along the insertion direction.

12. The seat belt latch according to claim 3, characterized in that: It also includes a decorative cover, which is fixedly connected to the first shell and covers the side surface of the protrusion.

13. The seat belt latch according to claim 3, characterized in that: There is one light emitting device, and a diffuser of the light emitting device is fixed on a first side of the protrusion, the first side is adjacent to the insertion opening, and the light emitting component is fixed on the second shell.

14. The seat belt latch according to claim 3, characterized in that: There is one light emitting device, and a diffuser of the light emitting device is fixed on the second side of the protrusion, and the light emitting component is fixed on the first shell.

15. The seat belt latch according to claim 3, characterized in that: There are two light emitting devices, and a diffuser of one of the light emitting devices is fixed on the third side of the protrusion, and a diffuser of the other light emitting device is fixed on the fourth side of the protrusion, and the third side is arranged opposite to the fourth side.

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