Driver controller lock switch with protective cover

Abstract

The invention relates to the technical field of rail transit vehicle control equipment, and discloses a driver controller lock switch with a protective cover, which comprises a lock seat and the protective cover rotationally connected to the upper part of the lock seat, the protective cover is hinged to the upper part of the lock seat through a flange bolt, the upper part of the lock seat is fixedly provided with a ball plunger, and the inner side of the protective cover is provided with an arc-shaped limiting groove. A cavity is formed in the lower portion of the lock seat, a lock cylinder is rotationally connected into the cavity, a square driving groove is formed in the head of the lock cylinder, a key is connected into the square driving groove in an inserted and pulled fit mode, and a limiting groove is formed in the middle of the lock seat. High-frequency vibration is effectively resisted through cooperation of the protective cover and the ball head plunger, the protective cover is prevented from being accidentally bounced off, the rotating stroke of the lock cylinder is limited through the limiting pin to prevent operation overload, water vapor is prevented from invading the lock cylinder through the sealing washer, vibration is absorbed, and the safety protection level is improved.

Description

Technical Field

[0001] This invention relates to the field of rail transit vehicle control equipment technology, specifically a driver control lock switch with a protective cover. Background Technology

[0002] As the core control component for train operation, the driver's controller of a rail transit vehicle typically has a lock switch installed on its panel for power control and safety locking. The lock switch uses a lock cylinder to drive a mechanical actuator to achieve the on / off operation of the circuit.

[0003] Because rail transit vehicles are in a state of high-speed motion and accompanied by continuous high-frequency vibration during actual operation, the driver's lock switch and its external protective structure need to withstand long-term mechanical impact. Most of the existing driver's lock switch protective structures are connected by simple hinges. Since the existing protective structures lack a stable positioning mechanism to maintain a closed state under vibration, the driver's lock switch is very prone to accidental loosening or opening of the protective structure under vibration, which in turn allows external moisture and dust to directly invade the inside of the lock cylinder.

[0004] Therefore, this invention proposes a driver's lock switch with a protective cover to overcome the shortcomings of the prior art. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a driver's controller lock switch with a protective cover, which solves the problems of easy loosening and accidental opening of the surface protective structure of rail transit vehicles under long-term high-frequency vibration environment, as well as the lack of travel restriction of the internal locking mechanism during operation, which leads to damage to the mechanism, and the insufficient sealing of the overall structure, which makes it easy for moisture and dust to enter.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a driver's control lock switch with a protective cover, comprising a lock base and a protective cover rotatably connected to the upper part of the lock base. The protective cover is hinged to the upper part of the lock base via flange bolts. A ball-head plunger is fixedly installed on the upper part of the lock base. An arc-shaped limiting groove for positioning is provided on the inner side of the protective cover. The top of the ball-head plunger and the arc-shaped limiting groove on the inner side of the protective cover are in a sliding engagement state. An annular mounting cavity is provided at the lower part of the lock base. A lock cylinder is rotatably connected inside the annular mounting cavity. A square drive groove is provided at the head of the lock cylinder. A key controlled by the operating power supply is inserted and pulled into the square drive groove. A limiting groove is provided in the middle of the lock base. A limiting pin is slidably connected inside the limiting groove. A sealing gasket is tightly fitted to the bottom of the lock base. A fastening screw passes through the inside of the lock base body. Through the cooperation of various components, a structural system with high reliability, vibration-proof positioning, and efficient sealing protection capabilities is constructed.

[0007] Preferably, the outer surface of the ring is slidably fitted to the inner wall surface of the annular mounting cavity opened at the lower part of the lock seat, and the inner end of the lock cylinder has an outwardly protruding boss. The outer surface of the boss is shaped and plugged into the key insertion end surface. The outer surface of the key is relatively fixedly plugged into the inner surface of the square drive groove opened at the head of the lock cylinder.

[0008] Preferably, the limiting pin is inserted into the limiting groove in the middle of the lock seat, and the outer surface of the limiting pin is coated with a loosening and drop-resistant layer, and the outer wall of the lock cylinder and the side wall of the limiting pin are in contact limiting sliding connection.

[0009] Preferably, the outer surface of the top of the protective cover has an anti-slip texture, and the anti-slip texture is integrally formed and connected with the outer surface of the top of the protective cover.

[0010] Preferably, the sealing gasket is made of nitrile rubber. The upper surface of the sealing gasket is tightly fitted and fixed to the bottom surface of the lock seat. The end of the fastening screw passes through the through holes opened inside the lock seat body and the sealing gasket from the top of the lock seat downwards to facilitate installation and fixation with the external structure.

[0011] Preferably, when the protective cover is in the closed state, the top surface of the ball plunger is tightly engaged with the inner surface of the arc-shaped limiting groove opened on the inner side of the protective cover, the bottom end face of the protective cover is tightly fitted with the top end face of the lock seat, the bottom of the flange bolt passes through the edge of the protective cover and is threadedly fixed to the upper surface of the lock seat, and the flange surface of the flange bolt is slidably fitted with the upper surface of the protective cover.

[0012] This invention provides a driver's control lock switch with a protective cover. It has the following advantages:

[0013] 1. The present invention solves the problem in the prior art that the surface protective structure of the rail transit vehicle controller is prone to loosening and accidental opening under long-term high-frequency vibration environment by hinged protective cover to the upper part of the lock seat and fixedly installed ball plunger on the upper part of the lock seat, and the inner side of the protective cover is provided with arc-shaped limiting groove so that the top of the ball plunger slides and engages with the arc-shaped limiting groove. It achieves the effect of effectively resisting high-frequency vibration and preventing the protective cover from accidentally popping open, thereby achieving stable positioning and locking of the protective cover.

[0014] 2. The present invention solves the problem in the prior art that the internal locking mechanism lacks stroke limitation during operation and is easily damaged due to excessive force. It achieves the effect of accurately limiting the rotation stroke of the lock cylinder and preventing damage to the mechanical actuator caused by overload.

[0015] 3. This invention solves the problem of insufficient overall structural sealing in the prior art, which makes it easy for moisture and dust to enter. The invention achieves the effect of completely blocking external dust, moisture and foreign objects from entering the lock cylinder and using the sealing gasket to absorb vibration, thereby significantly improving the service life and safety protection level of the device. The invention has a technical solution that tightly fits the bottom of the lock seat with a sealing gasket, and fastening screws pass through the through holes of the lock seat body and the surface of the external mounting panel are threadedly fixed. The bottom end face of the protective cover is tightly fitted to the top end face of the lock seat. Attached Figure Description

[0016] Figure 1 This is a partial structural cross-sectional view of a driver's lock switch with a protective cover according to the present invention; Figure 2 This is a schematic diagram of the structure of a driver's lock switch with a protective cover according to the present invention; Figure 3 This is a partial structural diagram of a driver's control lock switch with a protective cover according to the present invention.

[0017] The components are: 1. Key; 2. Protective cover; 3. Bolt with flange; 4. Bolt with flange; 5. Lock seat; 6. Lock cylinder; 7. Limit pin; 8. Sealing gasket; 9. Sealing gasket. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see the appendix Figure 1 -Appendix Figure 2This invention provides a driver control lock switch with a protective cover, including a lock base 5 and a protective cover 2 rotatably connected to the upper part of the lock base 5. The lock base 5 serves as the core support carrier and mounting base for the internal components of the driver control lock switch with a protective cover. The protective cover 2 is used to shield the internal components of the lock base 5 to achieve physical isolation and protection functions such as dustproof, waterproof, and vibration-proof. The protective cover 2 is hinged to the upper part of the lock base 5 by flange bolts 3. The bottom of the flange bolts 3 penetrates the edge of the protective cover 2 and is threadedly fixed to the upper surface of the lock base 5. The flange surface of the flange bolts 3 is slidably fitted to the upper surface of the protective cover 2. A ball plunger 4 is fixedly installed on the upper part of the lock base 5. An arc-shaped limiting groove is opened on the inner side of the protective cover 2. The top of the ball plunger 4 is slidably engaged with the arc-shaped limiting groove on the inner side of the protective cover 2. The ball plunger 4 and the arc-shaped limiting groove on the inner side of the protective cover 2 cooperate to form a vibration-proof positioning structure. An annular mounting hole is opened at the lower part of the lock base 5. The lock cylinder 6 is rotatably connected inside the annular mounting cavity. The head of the lock cylinder 6 has a square drive groove, and a key 1 is inserted and pulled into the square drive groove. A limit groove is opened in the middle of the lock seat 5, and a limit pin 7 is slidably connected inside the limit groove. The limit pin 7 is inserted into the limit groove in the middle of the lock seat 5 and precisely constrains the rotation stroke of the lock cylinder 6 by sliding along the inner wall of the limit groove of the lock seat 5. A sealing washer 8 is tightly attached to the bottom of the lock seat 5. A fastening screw 9 passes through the inside of the lock seat 5 body. The upper surface of the sealing washer 8 is tightly attached to the bottom surface of the lock seat 5 and fixedly connected. The sealing washer 8 is set between the bottom surface of the lock seat 5 and the surface of the external mounting panel. The end of the fastening screw 9 passes through the through hole opened inside the lock seat 5 body and the sealing washer 8 from the top of the lock seat 5 downwards and is threadedly fixedly connected to the surface of the external mounting panel. This constructs a high-protection level closed locking basic frame for the driver's control lock switch with a protective cover.

[0020] Please see the appendix Figure 1 and attached Figure 3The lock cylinder 6 has a ring on its bottom outer surface. The outer surface of the ring slides and fits into the inner wall of the annular mounting cavity at the bottom of the lock base 5. The inner end of the lock cylinder 6 has an outwardly protruding boss. The outer surface of the boss fits into the surface of the key insertion end. The head of the lock cylinder 6 has a square drive groove. The outer surface of the key 1 is fixedly inserted into the inner surface of the square drive groove at the head of the lock cylinder 6. The outer surface of the limiting pin 7 is coated with a non-loosening and non-falling layer. The limiting pin 7 is fully inserted into the limiting groove in the middle of the lock base 5, and the outer wall of the lock cylinder 6 and the side wall of the limiting pin 7 are in contact, limiting, and sliding connection. The function of pin 7 is to provide precise guidance and travel limitation for the rotational movement of lock cylinder 6. The top outer surface of protective cover 2 has anti-slip texture, which is integrally formed with the top outer surface of protective cover 2. An arc-shaped limiting groove is provided on the inner side of protective cover 2. The top surface of ball plunger 4 is tightly engaged with the inner surface of the arc-shaped limiting groove on the inner side of protective cover 2. The bottom end face of protective cover 2 is tightly fitted with the top end face of lock seat 5. The sliding engagement structure of ball plunger 4 and arc-shaped limiting groove on the inner side of protective cover 2 ensures the high stability and anti-accidental opening capability of protective cover 2 in the high-frequency vibration environment of rail transit vehicles.

[0021] In a preferred embodiment, the bottom outer surface of the lock cylinder 6 has a ring, the outer surface of which is slidably fitted to the inner wall of the annular mounting cavity at the bottom of the lock base 5. The inner end of the lock cylinder 6 has an outwardly protruding boss, the outer surface of which is shaped to fit the insertion end of the key 1. The head of the lock cylinder 6 has a square drive groove, and the key 1 is inserted and pulled into the square drive groove. The outer surface of the key 1 is relatively fixedly inserted into the inner surface of the square drive groove at the head of the lock cylinder 6. The limiting pin 7 is inserted into the limiting groove in the middle of the lock base 5. The outer surface of the limiting pin 7 is coated with a loosening and drop-resistant layer. The outer wall of the lock cylinder 6 and the side wall of the limiting pin 7 are in contact, limiting, and sliding connection.

[0022] As another preferred embodiment, the top outer surface of the protective cover 2 has an anti-slip texture, which is integrally formed with the top outer surface of the protective cover 2. When the protective cover 2 is closed, the top surface of the ball plunger 4 is tightly engaged with the inner surface of the arc-shaped limiting groove opened on the inner side of the protective cover 2. The bottom end face of the protective cover 2 is tightly fitted with the top end face of the lock seat 5. The bottom of the flange bolt 3 penetrates the edge of the protective cover 2 and is threadedly fixed to the upper surface of the lock seat 5. The flange surface on the outside of the flange bolt 3 is slidably fitted with the upper surface of the protective cover 2.

[0023] In another preferred embodiment, a sealing washer 8 is tightly fitted to the bottom of the lock seat 5. The sealing washer 8 is made of nitrile rubber. The upper surface of the sealing washer 8 is tightly fitted and fixedly connected to the bottom surface of the lock seat 5. The sealing washer 8 is located between the bottom surface of the lock seat 5 and the surface of the external mounting panel. A fastening screw 9 is inserted inside the lock seat 5. The end of the fastening screw 9 passes through the through holes opened inside the lock seat 5 and the sealing washer 8 from the top of the lock seat 5 downwards and is threadedly fixedly connected to the surface of the external mounting panel.

[0024] Working principle: When the driver's control switch with protective cover is in the normally closed state, the top surface of the ball plunger 4 is tightly engaged with the inner surface of the arc-shaped limiting groove on the inner side of the protective cover 2. The bottom end face of the protective cover 2 is tightly fitted with the top end face of the lock seat 5. The upper surface of the sealing washer 8 is tightly fitted and fixedly connected with the bottom surface of the lock seat 5. The fastening screw 9 secures the lock seat 5 to the surface of the external mounting panel with threads. The protective cover 2 and the sealing washer 8 together prevent dust and moisture from entering the interior of the lock seat 5. When the operator needs to perform power control operation, the protective cover 2 with anti-slip texture is manually rotated counterclockwise. Under the action of external force, the protective cover 2 rotates counterclockwise along the axis of the flange bolt 3. The inner surface of the protective cover 2 presses against the top of the ball plunger 4. The top of the ball plunger 4 retracts into the ball plunger 4 and disengages from the inner surface of the arc-shaped limiting groove on the inner side of the protective cover 2. After the protective cover 2 is opened, the square drive groove on the head of the lock cylinder 6 is exposed. The operator inserts the key 1. Inside the square drive groove, the outer surface of key 1 is fixedly inserted with the inner surface of the square drive groove, and the end surface of key 1 is shaped and inserted into the protrusion surface of lock cylinder 6. Then, key 1 is rotated clockwise or counterclockwise, and key 1 drives lock cylinder 6 to rotate synchronously inside the annular mounting cavity opened at the bottom of lock seat 5. During the rotation of lock cylinder 6, limit pin 7 coated with anti-loosening and anti-dropping layer slides along the inner wall of limit groove of lock seat 5, and the outer wall of lock cylinder 6 is in contact with the side wall of limit pin 7 for limit sliding connection. Limit pin 7 precisely limits the rotation stroke of lock cylinder 6. Lock cylinder 6 synchronously drives the external mechanical components to control the circuit to close or open. After the operation is completed, key 1 is pulled out, and the protective cover 2 is manually rotated clockwise to the closed position. The top of ball plunger 4 is tightly engaged with the inner surface of the arc-shaped limit groove opened on the inner side of protective cover 2. The bottom end face of protective cover 2 is tightly fitted with the top end face of lock seat 5. The driver's control lock switch with protective cover is restored to the safe protection state.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A driver lock switch with a protective cover, comprising a lock base (5), wherein a protective cover (2) is rotatably connected to the upper part of the lock base (5). Its features are, The protective cover (2) is hinged to the upper part of the lock seat (5) by flange bolts (3). A ball plunger (4) is fixedly installed on the upper part of the lock seat (5). An arc-shaped limiting groove is opened on the inner side of the protective cover (2). The top of the ball plunger (4) is slidably engaged with the arc-shaped limiting groove opened on the inner side of the protective cover (2). An annular mounting cavity is opened at the lower part of the lock seat (5). A lock cylinder (6) is rotatably connected inside the annular mounting cavity. A square drive groove is opened at the head of the lock cylinder (6). A key (1) is inserted and pulled into the square drive groove. A limiting groove is opened in the middle of the lock seat (5). A limiting pin (7) is slidably connected inside the limiting groove. A sealing washer (8) is tightly fitted to the bottom of the lock seat (5). A fastening screw (9) passes through the body of the lock seat (5).

2. The driver's control lock switch with a protective cover according to claim 1, characterized in that, The bottom outer surface of the lock cylinder (6) has a ring, and the outer surface of the ring is slidably fitted to the inner wall surface of the annular mounting cavity opened at the bottom of the lock seat (5).

3. The driver's control lock switch with a protective cover according to claim 1, characterized in that, The inner end of the lock cylinder (6) has an outwardly protruding boss, and the outer surface of the boss is shaped to fit and plug into the insertion end surface of the key (1).

4. A driver's control lock switch with a protective cover according to claim 1, characterized in that, The limiting pin (7) is inserted into the limiting groove in the middle of the lock seat (5), and the outer surface of the limiting pin (7) is coated with a layer that prevents loosening and falling.

5. A driver's control lock switch with a protective cover according to claim 1, characterized in that, The top outer surface of the protective cover (2) has an anti-slip texture, and all the anti-slip textures are integrally formed and connected to the top outer surface of the protective cover (2).

6. A driver's control lock switch with a protective cover according to claim 1, characterized in that, The sealing gasket (8) is made of nitrile rubber, and the upper surface of the sealing gasket (8) is tightly fitted and fixedly connected to the bottom surface of the lock seat (5).

7. A driver's control lock switch with a protective cover according to claim 1, characterized in that, The end of the fastening screw (9) passes through the through hole opened inside the body of the lock seat (5) and the sealing washer (8) from the top of the lock seat (5) downwards.

8. A driver's control lock switch with a protective cover according to claim 1, characterized in that, When the protective cover (2) is closed, the top surface of the ball plunger (4) is tightly engaged with the inner surface of the arc-shaped limiting groove opened on the inner side of the protective cover (2), and the bottom end face of the protective cover (2) is tightly fitted to the top end face of the lock seat (5).

9. A driver's control lock switch with a protective cover according to claim 1, characterized in that, The bottom of the flange bolt (3) penetrates the edge of the protective cover (2) and is threadedly fixed to the upper surface of the lock seat (5). The flange surface of the flange bolt (3) is slidably fitted to the upper surface of the protective cover (2).

10. A driver's control lock switch with a protective cover according to claim 1, characterized in that, The outer surface of the key (1) is fixedly inserted into the inner surface of the square drive groove opened at the head of the lock cylinder (6), and the outer wall of the lock cylinder (6) is in contact with the side wall of the limiting pin (7) in a sliding connection.

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