Bus driver's door lock

Abstract

A bus driver door lock, including inner lock body, outer lock body, the inner lock body is equipped with inner handle, inner locking button, the inner lock body is provided with lock tongue, has the locking plate for locking lock tongue, the inner end surface of lock tongue and inner lock body are equipped with reset spring, the inner handle is equipped with the pivot for controlling the movement of lock tongue on the inner lock body, the surface of outer lock body is rotatably connected with the buckle hand through handle shaft, the buckle hand is equipped with push arm, the pivot of inner handle is equipped with transmission arm, transmission arm and push arm are equipped with transmission plate, the surface of outer lock body is equipped with glass cover plate, the outer lock body is equipped with alarm device, outer unlocking knob in glass cover plate, the outer unlocking knob is connected with inner locking button, the present application has the advantages of simple structure, reasonable design, convenient installation, small and exquisite size, convenient opening, convenient use etc.

Description

Technical Field

[0001] This invention belongs to the technical field of protective isolation facilities for the driver's area of ​​a vehicle, and specifically relates to a lock for the driver's enclosure door of a bus. Background Technology

[0002] Public buses are the most commonly used mode of transportation, but in recent years, numerous incidents of passengers harassing bus drivers have occurred across the country, with some even attacking drivers or grabbing the steering wheel. These incidents have severely impacted bus safety, causing significant personal injury and financial losses, and generating a negative social impact. To further strengthen urban vehicle safety, the transportation department has issued standards for bus doors. Therefore, a safe and reliable door lock is a fundamental guarantee for the use of bus doors. Traditional door locks use a separate structure for the alarm device and the lock body. This type of lock is extremely complex to install and has high maintenance costs. Furthermore, both the inner and outer opening of the door lock use handles. The outer handle structure is not only difficult to open, but the protruding handle also makes it easy for passengers to bump into it when passing by the door, causing considerable inconvenience. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a bus driver's door lock that is simple in structure, reasonable in design, easy to install, compact in size, easy to open, and easy to use.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: a bus driver's enclosure lock, comprising an inner lock body and an outer lock body. An inner handle is rotatably connected to the inner lock body. A latch is movably disposed within the inner lock body. A return spring is provided between the inner end face of the latch and the inner lock body. The inner handle has a rotating shaft on the inner lock body for controlling the movement of the latch. An inner locking stop button is also rotatably connected to the inner lock body. A locking plate for locking the latch is movably disposed within the inner lock body. The inner locking stop button drives the locking plate to move within the inner lock body. A latch is rotatably connected to the surface of the outer lock body via a handle shaft. A push arm is provided on the latch. A transmission arm is provided on the rotating shaft of the inner handle. A transmission plate is provided between the transmission arm and the push arm. A glass cover is provided on the surface of the outer lock body. An alarm device and an outer unlocking knob are provided inside the glass cover of the outer lock body. The outer unlocking knob is connected to the inner locking stop button.

[0005] Preferably, the inner lock body and the outer lock body are connected by mounting screws. The inner side of the outer lock body is provided with an inner mounting surface, and the outer side of the inner lock body is provided with an outer mounting surface. The outer lock body and the inner lock body are mounted on the door panel through the inner mounting surface and the outer mounting surface, and the distance between the inner mounting surface and the outer mounting surface is 38mm to 40mm. The inner lock body is provided with a cover plate on the outer mounting surface.

[0006] Preferably, the inner locking button has a turntable inside the inner lock body, and a lever is provided on the turntable. The lever is connected to the locking plate, and the inner locking button drives the locking plate to move inside the inner lock body through the lever.

[0007] Preferably, the inner lock body has limiting plates on both sides of the locking plate, the locking plate slides between the two limiting plates, the locking plate has a locking groove that matches the lever on the turntable, the lever drives the locking plate to move back and forth in the inner lock body through the locking groove, the locking plate also has a locking strip for locking the bolt, the locking plate has a limiting groove on the side facing the bolt to prevent the locking strip from hitting the bolt, and the inner lock body also has a limiting post that matches the limiting groove.

[0008] Preferably, the two ends of the transmission plate are riveted to the transmission arm and the push arm respectively, and washers are provided between the two ends of the transmission plate and the transmission arm and the push arm. A return spring for resetting the handle is sleeved on the handle shaft.

[0009] Preferably, the alarm device includes a push-button switch and a buzzer. The push-button switch abuts against the glass cover plate, and the buzzer is disposed in the inner lock body. The surface of the inner lock body is provided with a sound-transmitting hole relative to the buzzer.

[0010] Preferably, the geometric center of the latch is a drive hole connected to the rotating shaft of the inner handle, the outer end of the latch is an insertion part that matches the latch, the insertion part of the latch is provided with a shock-absorbing rubber block, and both sides of the latch are provided with side stops for limiting the retraction and extension positions of the latch.

[0011] Preferably, the side stop block of the locking tongue facing the locking plate abuts against the locking strip on the locking plate in the locked state.

[0012] This invention integrates the alarm device into the outer lock body and replaces the traditional outer handle with a latch, making the latch and packaging device flush with the surface of the outer lock body. This greatly reduces the overall size of the door lock, facilitating its installation and use. The latch-type external opening door lock is more labor-saving and convenient than the traditional outer handle method. The shock-absorbing rubber block on the lock tongue can reduce the vibration between the lock tongue and the latch, reducing the noise generated when the lock tongue hits the latch. The latch is connected to the inner handle's rotating shaft by a push arm, transmission plate, and transmission arm, avoiding the situation where opening from the inside or outside causes the other side to rotate. This invention has the advantages of simple structure, reasonable design, convenient installation, compact size, easy opening, and convenient use. Attached Figure Description

[0013] Figure 1 This is a side view of an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of one structure of the external lock body of the present invention;

[0015] Figure 3 This is an internal structural diagram of the external lock body of the present invention;

[0016] Figure 4 This is a schematic diagram of one structure of the inner locking body of the present invention;

[0017] Figure 5 This is an internal structural diagram of the inner lock body of the present invention.

[0018] In the diagram: 1. Inner lock body; 11. Mounting screw; 12. Outer mounting surface; 13. Cover plate; 2. Outer lock body; 21. Inner mounting surface; 3. Inner handle; 31. Rotary shaft; 4. Lock tongue; 41. Return spring; 42. Drive hole; 43. Insertion part; 44. Shock-absorbing rubber block; 45. Side stop block; 5. Inner locking button; 51. Turntable; 52. Lever arm; 6. Locking plate; 61. Limiting plate; 62. Locking groove; 63. Locking strip; 64. Limiting groove; 65. Limiting post; 7. Handle; 71. Handle shaft; 72. Push arm; 73. Transmission arm; 74. Transmission plate; 75. Washer; 76. Return spring; 8. Alarm device; 81. Glass cover plate; 82. Outer unlocking knob; 83. Disconnect switch; 84. Buzzer; 85. Sound transmission hole. Detailed Implementation

[0019] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0020] Example:

[0021] like Figures 1 to 5 The bus driver's enclosure door lock shown includes an inner lock body 1 and an outer lock body 2. The inner lock body 1 and the outer lock body 2 are connected by mounting screws 11. The inner side of the outer lock body 2 is provided with an inner mounting surface 21, and the outer side of the inner lock body 1 is provided with an outer mounting surface 12. The outer lock body 2 and the inner lock body 1 are installed on the enclosure door panel through the inner mounting surface 21 and the outer mounting surface 12, and the distance between the inner mounting surface 21 and the outer mounting surface 12 is 40mm. The inner lock body 1 is provided with a cover plate 13 on the outer mounting surface 12.

[0022] An inner handle 3 is rotatably connected to the inner lock body 1. A latch 4 is movably disposed within the inner lock body 1. A return spring 41 is provided between the inner end face of the latch 4 and the inner lock body 1. The inner handle 3 has a rotating shaft 31 on the inner lock body 1 for controlling the movement of the latch 4. An inner locking button 5 is also rotatably connected to the inner lock body 1. The inner locking button 5 has a turntable 51 inside the inner lock body 1. A lever 52 is provided on the turntable 51. A locking plate 6 for locking the latch 4 is movably disposed within the inner lock body 1. The lever 52 is connected to the locking plate 6. The lock body 1 has limiting plates 61 on both sides of the locking plate 6. The locking plate 6 slides between the two limiting plates 61. The locking plate 6 has a locking groove 62 that matches the lever 52 on the turntable 51. The lever 52 drives the locking plate 6 to move back and forth in the inner lock body 1 through the locking groove 62. The locking plate 6 also has a locking strip 63 for locking the bolt 4. The locking plate 6 has a limiting groove 64 on the side facing the bolt 4 to prevent the locking strip 63 from hitting the bolt 4. The inner lock body 1 also has a limiting post 65 that matches the limiting groove 64.

[0023] The outer lock body 2 is rotatably connected to a handle 7 via a handle shaft 71. A return spring 76 for resetting the handle 7 is sleeved on the handle shaft 71. The handle 7 is provided with a push arm 72. The inner handle 3's rotating shaft 31 is provided with a transmission arm 73. A transmission plate 74 is provided between the transmission arm 73 and the push arm 72. Both ends of the transmission plate 74 are riveted to the transmission arm 73 and the push arm 72, respectively. Both ends of the transmission plate 74 are connected to the transmission arm 73 and the push arm 72. A washer 75 is provided; the surface of the outer lock body 2 is provided with a glass cover plate 81, and the outer lock body 2 is provided with an alarm device 8 and an outer unlocking knob 82 inside the glass cover plate 81. The outer unlocking knob 82 is connected to the inner locking button 5. The alarm device 8 includes a push-off switch 83 and a buzzer 84. The push-off switch 83 abuts against the glass cover plate 81. The buzzer 84 is located inside the inner lock body 1, and the surface of the inner lock body 1 is provided with a sound-transmitting hole 85 relative to the buzzer 84.

[0024] The geometric center of the latch 4 is a drive hole 42 that connects to the rotating shaft 31 of the inner handle 3. The outer end of the latch 4 is an insertion part 43 that matches the latch. The insertion part 43 of the latch 4 is provided with a shock-absorbing rubber block 44. Both sides of the latch 4 are provided with side blocks 45 for limiting the retracted and extended positions of the latch 4. The side block 45 of the latch 4 facing the locking plate 6 abuts against the locking strip 63 on the locking plate 6 in the locked state.

[0025] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A bus driver's enclosure lock, comprising an inner lock body (1) and an outer lock body (2), wherein an inner handle (3) is rotatably connected to the inner lock body (1), a latch (4) is movably provided within the inner lock body (1), a return spring (41) is provided between the inner end face of the latch (4) and the inner lock body (1), the inner handle (3) is provided with a pivot (31) on the inner lock body (1) for controlling the movement of the latch (4), an inner locking button (5) is also rotatably connected to the inner lock body (1), a locking plate (6) for locking the latch (4) is movably provided within the inner lock body (1), and the inner locking button (5) drives the locking plate (6) to move within the inner lock body (1), characterized in that: The outer lock body (2) has a handle (7) rotatably connected to the surface of the outer lock body (2) via a handle shaft (71). The handle (7) is provided with a push arm (72). The inner handle (3) has a transmission arm (73) on its rotating shaft (31). A transmission plate (74) is provided between the transmission arm (73) and the push arm (72). The outer lock body (2) has a glass cover plate (81). The outer lock body (2) has an alarm device (8) and an outer unlocking knob (82) inside the glass cover plate (81). The outer unlocking knob (82) is connected to the inner locking button (5).

2. The bus driver's enclosure lock according to claim 1, characterized in that: The inner lock body (1) and the outer lock body (2) are connected by mounting screws (11). The inner side of the outer lock body (2) is provided with an inner mounting surface (21), and the outer side of the inner lock body (1) is provided with an outer mounting surface (12). The outer lock body (2) and the inner lock body (1) are installed on the door panel through the inner mounting surface (21) and the outer mounting surface (12), and the distance between the inner mounting surface (21) and the outer mounting surface (12) is 38mm to 40mm. The inner lock body (1) is provided with a cover plate (13) on the outer mounting surface (12).

3. The bus driver's enclosure lock according to claim 1, characterized in that: The inner locking button (5) has a turntable (51) inside the inner lock body (1), and a lever (52) is provided on the turntable (51). The lever (52) is connected to the locking plate (6).

4. The bus driver's enclosure lock according to claim 3, characterized in that: The inner lock body (1) has limiting plates (61) on both sides of the locking plate (6). The locking plate (6) slides between the two limiting plates (61). The locking plate (6) has a locking groove (62) that matches the lever (52) on the turntable (51). The lever (52) drives the locking plate (6) to move back and forth in the inner lock body (1) through the locking groove (62). The locking plate (6) also has a locking strip (63) for locking the bolt (4). The locking plate (6) has a limiting groove (64) on the side facing the bolt (4) to prevent the locking strip (63) from hitting the bolt (4). The inner lock body (1) also has a limiting post (65) that matches the limiting groove (64).

5. The bus driver's enclosure lock according to claim 1, characterized in that: The two ends of the transmission plate (74) are riveted to the transmission arm (73) and the push arm (72) respectively. Washers (75) are provided between the two ends of the transmission plate (74) and the transmission arm (73) and the push arm (72). A return spring (76) for resetting the handle (7) is sleeved on the handle shaft (71).

6. The bus driver's enclosure lock according to claim 1, characterized in that: The alarm device (8) includes a push-off switch (83) and a buzzer (84). The push-off switch (83) abuts against the glass cover plate (81). The buzzer (84) is located inside the inner lock body (1). The surface of the inner lock body (1) is provided with a sound-transmitting hole (85) relative to the buzzer (84).

7. The bus driver's enclosure lock according to claim 1, characterized in that: The geometric center of the latch (4) is a drive hole (42) that connects to the pivot (31) of the inner handle (3). The outer end of the latch (4) is an insertion part (43) that matches the latch. The insertion part (43) of the latch (4) is provided with a shock-absorbing rubber block (44). Both sides of the latch (4) are provided with side blocks (45) for limiting the retraction and extension positions of the latch (4).

8. The bus driver's enclosure lock according to claim 1, 4, or 7, characterized in that: The side stop (45) of the latch (4) facing the locking plate (6) abuts against the locking strip (63) on the locking plate (6) in the locked state.

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