Indication switch for safety belt

Abstract

An indicating switch used on a safety belt comprises a lock catch provided with a slot for the safety belt to be inserted therein, the indicating switch comprises a microswitch and a shell used for fixing the microswitch, the microswitch triggers and transmits signals when the safety belt is inserted into the slot, the shell is installed on the side face of the lock catch, and the safety belt is inserted into the slot through the shell. The shell comprises a first buckle position and a second buckle position which are located on the upper side and the lower side of the shell respectively in the inserting direction of the safety belt, the second buckle position of the shell is located at the bottom of the lock catch and used for bearing the shell, and the first buckle position and the second buckle position are matched to be used for fixing the shell to the side face of the lock catch. The beneficial effects of the utility model are that in the aspect of installation, complex and high-cost improvements are not required to be carried out on an existing lock catch structure, and the housing of the indicating switch can be easily and stably clamped on the side surface of the lock catch only through the first buckle position and the second buckle position, so that the installation process is greatly simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to an indicating switch, in particular to an indicating switch used on a safety belt. Background Art

[0002] The automotive seat belt indicator switch is an important safety device. It is usually installed near the seat belt slot and detects whether the seat belt is properly inserted through mechanical or electronic sensing. When the seat belt is correctly inserted into the slot, the switch will trigger the corresponding signal and transmit it to the vehicle's electronic control system. The seat belt indicator light on the dashboard will go out, indicating that the seat belt is fastened; if the seat belt is not properly inserted, the switch will not trigger the signal, and the indicator light will continue to light up, reminding the driver and passengers to fasten their seat belts. This switch ensures that the use status of the seat belt can be accurately monitored during the vehicle's driving, effectively enhancing driving safety, and is an indispensable part of the vehicle's safety system.

[0003] In the prior art, the seat belt indicator switch has the following defects: first, the installation method requires the modification of the seat belt structure, which increases the difficulty and cost of installation; second, an additional trigger is required to detect the seat belt status, which not only makes the system complicated, but also causes inaccurate detection due to failure of the trigger, affecting the normal monitoring of the seat belt usage status, thereby reducing driving safety. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an indicator switch for a safety belt which can be directly assembled on an existing safety buckle and used.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows: an indicator switch for a seat belt, comprising a lock buckle having a slot for inserting the seat belt therein, the indicator switch comprising a micro switch and a shell for fixing the micro switch, the micro switch is triggered and transmits a signal when the seat belt is inserted into the slot, the shell is installed on the side of the lock buckle, the shell comprises a first buckle position and a second buckle position respectively located on the upper and lower sides of the shell along the seat belt insertion direction, the second buckle position of the shell is located at the bottom of the lock buckle and is used to support the shell, the first buckle position and the second buckle position cooperate to fix the shell to the side of the lock buckle.

[0006] The beneficial effects of the utility model are as follows: in terms of installation, there is no need to make complex and costly improvements to the existing lock structure. Only by relying on the first snap position and the second snap position, the shell of the indicator switch can be easily and firmly mounted on the side of the lock, which greatly simplifies the installation process and improves production efficiency. In terms of space utilization, since the indicator switch is installed on the side of the lock, the impact on the overall volume is minimal. This means that there will be no impact on the shell originally used to package the lock, so that the packaging design does not need to be readjusted, effectively avoiding the extra cost and time waste caused by packaging changes, and ensuring the consistency and stability of the product in packaging and subsequent application links.

[0007] Furthermore, the shell is provided with a first hook and a second hook at the first hook position, which are respectively located on the front and rear sides of the lock, and the lock includes a front panel and a back panel. The front panel is provided with a plurality of protruding columns protruding from the back panel, the first hook is locked on one of the protruding columns, and the second hook is locked in the slot.

[0008] The shell is provided with a first hook and a second hook on the front and rear sides of the lock at the first buckle position, and this design has unique advantages. The first hook cooperates with the protruding column on the front panel, and the second hook is inserted into the slot. The two are correspondingly arranged on both sides of the shell, which greatly enhances the stability of the clamping. Compared with the single hook design, it can better resist external forces from different directions, prevent the indicator switch from loosening or displacement during use, and ensure its stable operation. Moreover, the lock itself uses the protruding column and slot on the front panel for clamping, without the need for additional complex structures, which not only saves material costs, but also realizes the firm installation of the indicator switch without changing the overall structure of the lock, thereby improving product reliability.

[0009] Furthermore, the shell includes a guide portion with a guide groove arranged therein, a follower that follows the movement of the seat belt is arranged in the slot and both left and right ends of the follower protrude out of the slot, one of the left and right ends of the follower can move in the guide groove, and a guide slope is arranged at an opening of one end of the guide portion compared to the follower, and the bottom of the guide groove corresponds to the trigger button of the micro switch.

[0010] The guide grooves set in the housing accurately limit the moving direction of the follower, ensuring that the follower can stably trigger the micro switch when the seat belt moves, effectively avoiding the situation where the follower cannot be triggered due to deviation in the moving direction. The guide slope is even more ingenious. When the positions of the two ends of the follower are offset, it can correct it in time, so that the follower can smoothly return to its position and enter the guide groove, ensuring that the entire indicator switch system is always in a stable and reliable operating state, greatly improving the practicality and stability of the product.

[0011] Furthermore, a spring, a guide column and a trigger button of a micro switch are arranged in the guide groove in the order of contact with the follower.

[0012] The spring, guide column and trigger button of the micro switch are arranged in the guide groove in the order of contact with the follower, which has many beneficial effects. The spring can provide buffering when the follower moves, absorb its kinetic energy, prevent damage to the micro switch due to excessive impact force, and ensure stable contact between the follower and the trigger button to avoid the influence of poor contact on the trigger effect. The guide column further limits the movement path of the follower, so that it can only accurately trigger the micro switch along a specific direction, improving the accuracy and reliability of the trigger. This design enables the follower to stably trigger the micro switch regardless of any external force interference during the movement of the seat belt, ensuring that the indicator switch system always works normally, thereby improving the stability and safety of the entire seat belt indicator system.

[0013] Furthermore, the shell includes a main board against the side of the lock, and the shell is provided with a supporting plate arranged at a right angle to the main board at the second locking position, and a locking groove for the protruding column to be locked in the connection between the supporting plate and the main board is provided.

[0014] The main board of the housing is against the side of the lock, and a buckle groove is provided at the connection between the supporting plate and the main board at a right angle at the second buckle position for the protruding column to be locked. This design opens the buckle groove here, which greatly reduces the impact on the overall structure of the housing. Since the buckle groove is reasonably located, it can effectively disperse the pressure when subjected to external force, preventing the housing from breaking due to stress concentration, thereby extending the service life of the indicator switch, improving the durability and stability of the product, and ensuring that the indicator switch can always function normally during long-term use.

[0015] Furthermore, a plurality of wire management holes having a hole diameter smaller than the diameter of the wire are provided on the side of the support plate facing away from the insertion direction of the safety belt.

[0016] The aperture of these cable management jacks is smaller than the diameter of the wires. When the wires pass through the cable management jacks, they can effectively fix and organize the wires. On the one hand, it avoids the entanglement and knotting of wires caused by shaking, displacement, etc. during use, making the line layout more regular and orderly, and improving the overall aesthetics of the product. On the other hand, it effectively prevents the wires from being damaged due to accidental pulling, ensuring the stability of the signal transmission of the indicator switch. The reasonably distributed cable management jacks make the connection between the wires and the indicator switch more stable, reduce the risk of indicator switch failure due to line problems, and further improve the reliability and durability of the entire seat belt indicator system, ensuring its stable operation in various complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is an axonometric diagram of an indicator switch according to an embodiment of the utility model;

[0018] Figure 2 This is a disassembly diagram of the indicator switch of the embodiment of the utility model;

[0019] Figure 3 This is an axonometric view of the lock buckle of the utility model embodiment;

[0020] Figure 4 This is an axonometric view of the utility model embodiment after assembly. DETAILED DESCRIPTION

[0021] The utility model embodiment is a kind of indicator switch used for safety belt. Figure 1 - 4: It includes a lock buckle 2 and an indicator switch 1. The lock buckle 2 includes a front panel 22 and a back panel 23 that are fixed to each other. The front panel 22 is provided with a plurality of protruding columns 221 that protrude from the back panel 23. A slot 21 for inserting a safety belt (not shown in the figure) is formed between the front panel 22 and the back panel 23. A follower 24 that moves with the safety belt (not shown in the figure) is provided in the slot 21, and both left and right ends of the follower 24 protrude from the slot 21.

[0022] The indicator switch 1 includes a micro switch 11 and a housing 12 for fixing the micro switch 11, and the housing 12 is fixed to the side of the lock 2. The housing 12 includes a main board 126, and a plurality of fixing columns 1261 are provided on the main board 126. The micro switch 11 is provided with fixing holes 111 corresponding to the fixing columns 1261. One end face of the micro switch 11 abuts against the main board 126 and is fixed through the fixing holes 111 and the fixing columns 1261. As a preferred method, the end face of the micro switch 11 abutting against the main board 126 can be fixed to the main board 126 by bonding.

[0023] The housing 12 further includes a first buckle position 121 and a second buckle position 122 located at the upper and lower sides of the main board 126. A first hook 123 and a second hook 124 are respectively arranged at the front and rear sides of the first buckle position 121 relative to the lock buckle 2. The first hook 123 is arranged on one of the protruding columns 221 of the front panel 22, and the second hook 124 is arranged in the slot 21. A guide portion 125 is arranged on one side of the second hook 124 extending toward the opening of the slot 21, and a guide groove 1252 is formed inside the guide portion 125. A guide inclined surface 1251 is arranged at the opening of one end of the guide portion 125 compared to the follower 24; a spring 1253, a guide column 1254 and a trigger button 112 of the micro switch 11 are arranged in the guide groove 1252 in the order of contact with the follower 24. As a preferred embodiment, a clearance groove 1241 is provided at the side of the second hook 124, i.e., at the connection between the second hook 124 and the guide portion 125, so that when the second hook 124 is locked in the slot 21, the outer wall of the guide portion 125 is pressed against the side wall of the slot 21 to further reduce the volume of the indicator switch 1.

[0024] A support plate 127 is provided at a right angle to the main board 126 at the second buckle position 122, and a buckle groove 128 for the protruding column 221 to be buckled in is provided at the connection between the support plate 127 and the main board 126. A plurality of wire management holes 1272 with a hole diameter smaller than the wire diameter are provided on the side of the support plate 127 facing away from the seat belt insertion direction; a support column 1271 is provided on the side of the support plate 127 facing the seat belt insertion direction, and after the protruding column 221 is buckled in the buckle groove 128, one end of the support column 1271 presses against the protruding column 221 to prevent it from falling out.

[0025] The usage process of this embodiment is as follows: the indicator switch 1 is clamped on the side of the lock buckle 2 through the first clamping position 121 and the second clamping position 122. When the seat belt is inserted into the slot 21, the follower 24 will be driven to move. Then, one end of the follower 24 enters the guide groove 1252 and successively rests on the spring 1253 and the guide column 1254. Then, after the seat belt is inserted into place, the follower 24 drives the guide column 1254 to trigger the trigger button 112 of the micro switch 11.

[0026] The above embodiment is only one of the preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. An indicator switch for a seat belt, comprising a lock having a slot for inserting the seat belt therein, the indicator switch comprising a micro switch and a housing for fixing the micro switch, the micro switch being triggered and transmitting a signal when the seat belt is inserted into the slot, characterized in that: The shell is installed on the side of the lock, and the shell includes a first snap position and a second snap position respectively located on the upper and lower sides of the shell along the seat belt insertion direction. The second snap position of the shell is located at the bottom of the lock and is used to support the shell. The first snap position and the second snap position cooperate to fix the shell on the side of the lock.

2. The indicator switch for a safety belt according to claim 1, characterized in that: The shell is provided with a first hook and a second hook at the first buckle position, which are respectively located on the front and rear sides of the lock. The lock includes a front panel and a back panel. The front panel is provided with a plurality of protruding columns protruding from the back panel. The first hook is locked on one of the protruding columns, and the second hook is locked in the slot.

3. The indicator switch for a safety belt according to claim 1, characterized in that: The shell includes a guide portion with a guide groove arranged therein, a follower that follows the movement of the seat belt is arranged in the slot, and both left and right ends of the follower protrude from the slot, one of the left and right ends of the follower can move in the guide groove, and a guide slope is arranged at an opening of one end of the guide portion compared to the follower, and the bottom of the guide groove corresponds to the trigger button of the micro switch.

4. The indicator switch for a safety belt according to claim 3, characterized in that: A spring, a guide column and a trigger button of a micro switch are arranged in the guide groove in the order of contact with the follower.

5. The indicator switch for a safety belt according to claim 2, characterized in that: The shell comprises a main board pressed against the side of the lock buckle, the shell is provided with a supporting plate arranged at a right angle to the main board at the second buckle position, and a buckle groove for the protruding column to be clamped in the connection between the supporting plate and the main board is provided.

6. The indicator switch for a safety belt according to claim 5, characterized in that: The supporting plate is provided with a plurality of wire management holes with a hole diameter smaller than the diameter of the wire on one side facing away from the insertion direction of the safety belt.

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