Lock for rail transit vehicle seat

Abstract

The utility model discloses a lock for a rail transit vehicle seat. The lock comprises a lock hook assembly and an unlocking assembly. The lock hook assembly connects a lock hook support, a lock hook and a torsion spring into a whole in a penetrating mode through a lock shaft rotating shaft. The unlocking assembly connects the handle assembly, the lock cylinder shaft, the lock plate, the installation box, the push rod and the compression spring into a whole through a rotating shaft, a first fastener and a second fastener, and the push rod penetrates out of a through hole of the lock stopper. The manual unlocking, the automatic locking and the manual safety of the turnover folding seat are realized by adopting a cam and a pressure spring structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle seat field especially relates to a track traffic vehicle seat lock. BACKGROUND

[0002] At present, track traffic vehicle turnover folding seat often needs manual locking and unlocking, and the operation is more difficult.

[0003] Therefore, it is necessary to develop a new track traffic vehicle seat lock to overcome the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a track traffic vehicle seat lock, which realizes manual unlocking, automatic locking and manual insurance of the turnover folding seat by using cam and compression spring structure.

[0005] Technical scheme: the utility model discloses a track traffic vehicle seat lock, which is characterized by comprising a lock hook assembly and an unlocking assembly.

[0006] The lock hook assembly is installed on the back plate of the vehicle seat, and a rubber pad is arranged on the lock hook assembly.

[0007] The lock stop is installed on the framework of the vehicle seat.

[0008] The mounting box is embedded in the soft package of the vehicle seat.

[0009] The handle assembly comprises a handle and a fixed block.

[0010] The lock core shaft is assembled onto the handle assembly through the first fastener and the second fastener.

[0011] The vehicle seat is located on the track traffic vehicle.

[0012] Compared with the prior art, the utility model has the following remarkable advantages: the handle, push rod, lock hook and lock stop structure of the utility model are mechanically matched, realizing manual unlocking, automatic locking and manual insurance of the track traffic vehicle single-person and multi-person turnover seat system in opening and closing positions. DRAWINGS

[0013] Figure 1The utility model discloses a structure schematic drawing of the utility model.

[0014] Figure 2 The utility model discloses an unlocking structure schematic drawing of the utility model.

[0015] Figure 3 The utility model discloses a structure schematic drawing of the unlocking assembly of the utility model.

[0016] Figure 4 The utility model discloses a structure schematic drawing of the lock hook assembly of the utility model.

[0017] In the drawing, 1 is a lock hook assembly, 2 is an unlocking assembly, 3 is a lock stop, 4 is a push rod, 5 is a mounting box, 6 is a rotating shaft, 7 is a handle assembly, 8 is a first fastener, 9 is a second fastener, 10 is a lock plate, 11 is a lock cylinder shaft, 12 is a compression spring, 13 is a lock hook support, 14 is a lock hook, 15 is a torsion spring, and 16 is a lock shaft rotating shaft. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be further described below in combination with the drawings and specific embodiments.

[0019] The utility model discloses a lock for rail transit vehicle seat, including lock hook assembly 1 and unlocking assembly 2, lock hook assembly 1 is through lock shaft rotating shaft 16 and is connected into an organic whole with lock hook support 13, lock hook 14, torsion spring 15, unlocking assembly 2 is through rotating shaft 6, first fastener 8, second fastener 9 and is connected into an organic whole with handle assembly 7, lock cylinder shaft 11, lock plate 10, mounting box 5, push rod 4, compression spring 12, and push rod 4 is from the through -hole of lock stop 3 and is worn out.

[0020] The utility model discloses a lock hook assembly 1 is installed on the backboard of vehicle seat, is equipped with rubber pad on lock hook assembly 1. Lock stop 3 is installed on the framework of vehicle seat. The mounting box 5 is embedded in the soft package of vehicle seat. Handle assembly 7 includes handle and fixed block. Lock cylinder shaft 11 is assembled to handle assembly 7 through first fastener 8, second fastener 9. Vehicle seat is located on rail transit vehicle.

[0021] When using, lock hook 14 and lock stop 3 cooperate to realize locking and unlocking.

[0022] Unlocking principle: using four square key operation lock cylinder shaft 11 clockwise rotation, remove the insurance, manually pull handle assembly 7, handle assembly 7 rotates around rotating shaft 6, handle assembly 7 rear end protruding pushes up push rod 4, lock stop 3 is fixed through second fastener 9, when push rod 4 rises, compression spring 12 is compressed, and push rod 4 pushes out lock hook 14 from the recess of lock stop 3, until unlocking.

[0023] Locking principle: after unlocking, the spring force is released after the handle assembly 7 is released, driving the lock tongue pull rod and the handle 7 to automatically reset until the lock hook 14 and the lock catch 3 are overlapped, completing automatic locking. Automatic locking function is realized.

[0024] Safety principle: use a four-square key to operate the lock core shaft 11, rotate counterclockwise until the first fastener 8 stops against the groove of the lock core shaft 11, and the safety is completed.

[0025] When the seat is from the horizontal position to the vertical position, the main function is the cooperation of the lock hook and the lock catch. The side edge of the lock catch 3 hits the inclined surface of the lock hook 14, pushing the lock hook 14 up until the lock hook 14 falls into the groove of the lock catch 3, realizing the automatic locking function.

Claims

1. A lock for a seat of a rail vehicle, characterized in that: Including the lock hook assembly (1) and the unlocking assembly (2);The lock hook assembly (1) is through the lock shaft pivot (16) and is connected into an organic whole with the lock hook support (13), the lock hook (14), the torsional spring (15);The unlocking assembly (2) is through the pivot (6), first fastener (8), second fastener (9) and is connected into an organic whole with the handle assembly (7), lock cylinder shaft (11), lock plate (10), installation box (5), push rod (4), compression spring (12), push rod (4) from the through hole of lock stop (3) and out.

2. The lock for a seat of a rail vehicle according to claim 1, characterized in that: The lock hook assembly (1) is installed on the back plate of the vehicle seat, and the lock hook assembly (1) is provided with a rubber pad.

3. The track vehicle seat lock as defined in claim 1, wherein: The lock stop (3) is installed on the framework of the vehicle seat.

4. The track vehicle seat lock as defined in claim 1, wherein: The installation box (5) is embedded in the soft package of the vehicle seat.

5. The lock for a seat of a rail vehicle according to claim 1, characterized in that: The handle assembly (7) includes a handle and a fixing block.

6. The lock for a seat of a rail vehicle according to claim 1, characterized in that: The lock cylinder shaft (11) is assembled to the handle assembly (7) through the first fastener (8) and the second fastener (9).

7. The track vehicle seat lock as defined in any one of claims 2-4, characterized in that: The vehicle seat is located on a rail transit vehicle.

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