CN212336977U

CN212336977U - Stamping type middle lock

Info

Publication number: CN212336977U
Application number: CN202020759392.0U
Authority: CN
Inventors: 覃勇; 蒋碌权
Original assignee: Yaan Vocational College
Current assignee: Yaan Vocational College
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-01-12
Anticipated expiration: 2030-05-09

Abstract

The utility model relates to an emergency door field discloses a lock in middle of punching press formula. The middle lock comprises a cam, a cam seat, a lock pin pull rod and a middle pull rod, wherein the cam is in sliding fit with the cam seat, the middle pull rod is connected onto the cam, inclined plane grooves are symmetrically formed in the cam, moving blocks are arranged in the inclined plane grooves, the lock pin pull rod is connected with the moving blocks, the cam comprises a main body plate and a base plate, the edge of the main body plate is turned over to form a vertical edge, an included angle between the vertical edge and the sliding direction of the cam is an acute angle, the base plate is arranged on the inner side of the vertical edge of the main body plate and is parallel to the vertical edge, and the inclined plane groove is formed between the side face of the base plate and. The middle lock is further improved on the basis of the original inclined plane sliding groove type middle lock, and is suitable for being assembled through parts processed by stamping under the condition of ensuring the excellent performance of the middle lock, so that the production cost is reduced, and the production efficiency is improved.

Description

Stamping type middle lock

Technical Field

The utility model belongs to the technical field of emergency door and specifically relates to an intermediate lock of emergency door.

Background

The rail transit emergency door is used for a working channel for overhauling, maintaining and maintaining daily equipment of rail transit, is also used as an escape door in emergency, and is used as a channel for escaping to a platform when an emergency happens on the side of a rail. The device is used for isolating a platform and a boarding space of a driver in a glass curtain wall mode, and is installed on the left side and the right side of a near track of a track traffic platform to isolate the platform area from the track area. The main objective prevents that non-staff from falling the track through this door and taking place accident, reduces station air conditioning ventilation system's operation energy consumption, reduces the influence of train operation noise and piston wind to the station simultaneously, provides a safe, comfortable environment of waiting for the passenger. In emergency, the door lock must be locked safely in normal condition and opened smoothly in case of emergency. During normal conditions, the staff uses the key axis of rotation can normally open emergency door, can open fast without the key when coming out.

The currently adopted horizontal push lock mainly comprises: bolt subassembly, wire rope, lock core subassembly, rotation block subassembly, long gleitbretter, upper cover, the lower part of the body, connection piece, voussoir and decoration piece constitute. When the emergency door is opened from the rail side, the upper cover is pushed to transfer force to the rotating block assembly through the wedge block, the long sliding piece moves leftwards or rightwards under the action of the wedge block, and the steel wire rope connected with the long sliding piece, the upper locking pin assembly and the lower locking pin assembly is pulled to enable the locking pin to do vertical linear motion, so that the door is locked and opened. When the upper and lower lock pins axially move to a certain distance, the spring steel sheet resets and blocks the lock head to enable the door to be in an open state; when the door is closed under the action of external force, the stop dog on the door frame touches the head of the spring piece to enable the lock pin to extend out under the action of the spring and to be inserted into the lock hole of the door lintel and the floor lintel to close the door body. The entering side uses the key to rotate the lock core to push the long sliding sheet to move left or right to open the door body. The difference between the working principle and the rail side door is that the rotation of the lock core replaces the movement of the wedge block pushed by the pressing of the upper cover.

The pressing sheet is fastened through screws to compress the steel wire rope to be connected with the long sliding sheet, and the rope end welding end is connected with the lock pin. The emergency door is characterized in that an upper lock head steel wire rope and a lower lock head steel wire rope are adopted to pull the upper lock body lock pin and the lower lock body lock pin to move linearly to open and close the emergency door body, a return spring is arranged on the lock body lock pin, the lock pin generates large impact load when returning, the steel wire rope and the steel wire rope at the fastening end of a long sliding piece shift and lengthen under the action of certain times of impact load, so that the emergency door pushes an upper cover to be incapable of being opened at the track side, and even the steel wire rope at the joint of the lock pin breaks down, so that the structural performance is unstable, and great complaints are brought.

To solve the above problems, the applicant invented a bevel-slider type intermediate lock and applied for utility model patent No. 202020465359.7. This intermediate lock adopts the cam mechanism who has the inclined plane groove to replace wire rope's thinking to improve, under the minimum prerequisite of guaranteeing present structure change, improves the life of intermediate lock by a wide margin, and its life is not less than 2 times of present structure. The various parts of the intermediate lock can be processed by casting, turning, stamping and the like, and the stamping forming is the best in terms of production cost and production efficiency. However, the intermediate lock structure disclosed in the above-mentioned embodiments is more suitable for casting or turning, and these machining methods do not have the low cost and high efficiency of press forming.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a lock in middle of punching press formula is provided, more is suitable for stamping process to improve production efficiency, reduction in production cost.

The utility model discloses a lock in middle of punching press formula, including cam, cam seat, lockpin pull rod and middle pull rod, cam and cam seat sliding fit, middle pull rod is connected on the cam, the cam symmetry is provided with the inclined plane groove, the inclined plane inslot is provided with the motion piece, the lockpin pull rod is connected with the motion piece, the cam includes main part board and backing plate, the edge of main part board is turned over a formation border that stands vertically, the contained angle of the slip direction of border and cam that stands vertically is the acute angle, the backing plate sets up in the border that stands vertically of main part board inboardly to the side and the border that stands vertically of backing plate parallel, form between the side of backing plate and the border that stands vertically the inclined plane groove.

Preferably, the two sides of the cam are respectively provided with main body plates in opposite directions, the base plate is arranged between the main body plates on the two sides and respectively forms an inclined plane groove with the main body plates on the two sides, the moving block is clamped in the inclined plane grooves corresponding to the main body plates on the two sides, an opening for accommodating the lock pin pull rod is formed between the vertical edges of the main body plates on the two sides, and the lock pin pull rod penetrates through the opening to be connected with the moving block.

Preferably, the backing plate includes big backing plate and little backing plate, the both sides of little backing plate are provided with big backing plate respectively, one side of little backing plate towards the inclined plane groove is shorter than big backing plate and makes and form the groove of stepping down between the big backing plate of both sides, the tip of lockpin pull rod is located the inslot of stepping down.

Preferably, the cam seat is of a U-shaped cross section, and the cam is arranged in the cam seat.

Preferably, guide bar holes are formed in the two side faces of the cam seat along the sliding direction of the cam, guide wheels are arranged on the two sides of the cam, and the guide wheels are arranged in the guide bar holes.

Preferably, a pull rod shaft is arranged at the end part of the middle pull rod, and the pull rod shaft penetrates through the guide strip hole to be connected with the cam.

Preferably, the cam seat is provided with a thrust roller corresponding to the lock pin pull rod, and the thrust roller is positioned on one side of the lock pin pull rod close to the pulling direction of the middle pull rod and abuts against the side surface of the lock pin pull rod.

Preferably, one side of the cam seat is provided with a connecting cushion block, the other side of the cam seat is provided with a mounting bracket for connecting a door frame body, the mounting bracket is of an L-shaped structure, and the connecting cushion block and the mounting bracket are respectively connected with corresponding parts of the door frame body.

The utility model has the advantages that: the stamping type intermediate lock is further improved on the basis of the original inclined plane sliding groove type intermediate lock, and is suitable for being assembled through stamping parts under the condition of ensuring the excellent performance of the intermediate lock, so that the production cost is reduced, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view of a stamped intermediate lock;

FIG. 2 is a schematic view of a cam;

FIG. 3 is an internal schematic view of the cam;

figure 4 is a cross-sectional view of the stamped intermediate lock installed in a doorframe.

Reference numerals: cam seat 1, guide strip hole 11, cam 2, main body plate 21, upright edge 211, backing plate 22, large backing plate 221, small backing plate 222, abdicating groove 223, guide wheel 23, inclined groove 24, lock pin pull rod 3, motion block 31, middle pull rod 4, thrust roller 5, connecting cushion block 6, mounting bracket 7 and door frame body 8.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The utility model discloses a lock in middle of punching press formula is in the background art the middle improvement of going on the basis of locking in the middle of inclined plane sliding tray type, it includes cam 2, cam seat 1, lockpin pull rod 3 and middle pull rod 4 equally with former middle lock, cam 2 and cam seat 1 sliding fit, middle pull rod 4 is connected on

cam

2, 2 symmetries of cam are provided with inclined plane groove 24, be provided with motion piece 31 in the inclined plane groove 24, lockpin pull rod 3 is connected with motion piece 31. For stamping forming, the biggest degree of difficulty is in the formation of inclined plane groove 24, and inclined plane groove 24 that direct stamping formed is difficult to satisfy the performance requirement to this, as shown in fig. 3, cam 2 in the utility model discloses include main part board 21 and backing plate 22, the edge of main part board 21 is turned over and forms upright border 211, the contained angle of upright border 211 and cam 2's slip direction is the acute angle, backing plate 22 sets up in the upright border 211 of main part board 21 inboard to the side of backing plate parallels with upright border 211, form inclined plane groove 24 between the side of backing plate 22 and the upright border 211. The upright edge 211 of the main body plate 21 can be easily formed by stamping, while the backing plate 22 only needs to be stamped into a shape matching the upright edge 211 of the main body plate 21, and other components of the intermediate lock can be processed by conventional stamping. Can weld or bolted connection as required after the punching press forms the part, can adopt bolt etc. to dismantle the connection to the part that appears wearing and tearing easily to follow-up change of being convenient for, then can weld to the inconvenient connection position that sets up the bolt.

As with the conventional bevel-groove type middle lock, the moving block 31 is preferably clamped in the two oppositely-buckled bevel grooves 24 to improve the sliding stability, and therefore, as shown in fig. 2, as a preferred mode, the two sides of the cam 2 are respectively provided with the main body plates 21 in opposite directions, the backing plate 22 is arranged between the two main body plates 21 and forms the bevel grooves 24 with the two main body plates 21, the moving block 31 is clamped in the corresponding bevel grooves 24 of the two main body plates 21, an opening for accommodating the lock pin pull rod 3 is formed between the upright edges of the two main body plates 21, and the lock pin pull rod 3 is connected with the moving block 31 through the opening. The opening not only provides a moving space for the lock pin pull rod 3, but also has a limiting function. Still preferably, the moving block 31 is a rolling bearing, a rolling bearing or other rolling structure mounted on the lock pin pull rod 3, and usually, an end of the lock pin pull rod 3 extends out of the rolling bearing by a certain length, in order to accommodate the end of the lock pin pull rod 3, as shown in fig. 3, the shim plate 22 includes a large shim plate 221 and a small shim plate 222, the large shim plate 221 is respectively disposed on two sides of the small shim plate 222, one side of the small shim plate 222 facing the inclined plane groove 24 is shorter than the large shim plate 221 so that an abdicating groove 223 is formed between the large shim plates 221 on two sides, and the end of the lock pin pull rod 3 is located in. Therefore, the abdicating groove 223 can be formed without cutting, the abdicating groove 223 is very suitable for stamping, the abdicating groove 223 can not only abdicating the end part of the lock pin pull rod 3, but also play a role in guiding and positioning, and the stability of the motion block 31 and the lock pin pull rod 3 in the vertical direction is ensured.

The cam seat 1 mainly provides a sliding space for the cam 2, so that the stability of the cam seat 1 and the cam 2 in matching is increased to the maximum extent while the stamping forming requirements are met, the section of the cam seat 1 is of a U-shaped structure, the cam 2 is arranged in the cam seat 1, the cam 2 is semi-surrounded by the cam seat 1, and the sliding matching of the cam seat 1 and the cam 2 can be guaranteed. In order to improve the stability of the sliding of the cam 2, a corresponding guide structure may be provided on the cam base 1 to guide the cam 2, as shown in fig. 1, two side surfaces of the cam base 1 are provided with a guide bar hole 11 along the sliding direction of the cam 2, two sides of the cam 2 are provided with guide wheels 23, the guide wheels 23 are provided in the guide bar holes 11, the guide wheels 23 may be rolling bearings, and the guide function of the sliding of the cam 2 is realized through the cooperation of the guide wheels 23 and the guide bar holes 11. After the cam seat 1 half-encloses the cam 2, the middle pull rod 4 can still be arranged at one side of the opening of the cam seat 1, but considering that the cam 2 is composed of the main body plate 21 and the backing plate 22, the side is inconvenient to connect, therefore, the end of the middle pull rod 4 is provided with a pull rod shaft which passes through the guide bar hole 11 and is connected with the cam 2. Thus, the guide strip hole 11 is more fully utilized, and the guide strip hole can play a yielding role in addition to the original guide function.

Because the section of the cam seat 1 is of a U-shaped structure, the two sides of the cam seat do not have the function of limiting the lock pin pull rod 3, in order to ensure that the lock pin pull rod 3 cannot be synchronously taken out when the cam 2 is pulled by the middle pull rod 4, the cam seat 1 is provided with a thrust roller 5 corresponding to the lock pin pull rod 3, and the thrust roller 5 is positioned on one side of the lock pin pull rod 3 close to the pulling-out direction of the middle pull rod 4 and abuts against the side surface of the lock pin pull rod 3. The thrust roller 5, like the moving block 31 and the guide wheel 23, may be a rolling bearing to reduce the number of parts. When the middle pull rod 4 pulls the cam 2, the thrust roller 5 can prop against the lockpin pull rod 3, so that the lockpin pull rod 3 does not move outwards but moves linearly towards the axial direction of the two sides, and the function of the middle lock is better exerted.

The utility model discloses an each spare part of lock mainly leans on stamping forming in the middle of the punching press formula, therefore overall structure can be less for original middle lock, and this can save raw and other materials to a certain extent, nevertheless, in order to install it on original door frame body 8, as shown in fig. 4, one side of cam seat 1 is provided with connects cushion 6, and the opposite side is provided with the installation bracket 7 that is used for connecting door frame body 8, installation bracket 7 is L shape structure, connect cushion 6 and installation bracket 7 and be connected with door frame body 8's corresponding position respectively. The connecting spacers 6 are usually provided in plural numbers to achieve stable connection, and the positions where the connecting spacers are provided are preferably provided on opposite sides of the intermediate link 4, while the mounting brackets 7 of L-shaped configuration may be provided on the same side of the intermediate link 4 to give the intermediate link 4 sufficient play. The addition of the two connecting pieces can facilitate the stable installation of the cam seat 1 with smaller volume in the door frame body 8.

Claims

1. Punching press formula intermediate lock, including cam (2), cam seat (1), lockpin pull rod (3) and middle pull rod (4), cam (2) and cam seat (1) sliding fit, middle pull rod (4) are connected on cam (2), cam (2) symmetry is provided with inclined plane groove (24), be provided with in inclined plane groove (24) and move piece (31), lockpin pull rod (3) are connected with moving piece (31), its characterized in that: cam (2) are including main part board (21) and backing plate (22), the edge of main part board (21) is turned over and is formed upright border (211), the contained angle of the slip direction of upright border (211) and cam (2) is the acute angle, backing plate (22) set up in upright border (211) of main part board (21) inboard to the side of backing plate parallels with upright border (211), form between the side of backing plate (22) and upright border (211) inclined plane groove (24).

2. The stamped intermediate lock of claim 1, wherein: the two sides of the cam (2) are respectively provided with main body plates (21) in opposite directions, the backing plate (22) is arranged between the main body plates (21) on the two sides and forms an inclined plane groove (24) with the main body plates (21) on the two sides respectively, the moving block (31) is clamped in the inclined plane grooves (24) corresponding to the main body plates (21) on the two sides, an opening for accommodating the lock pin pull rod (3) is formed between the vertical edges of the main body plates (21) on the two sides, and the lock pin pull rod (3) penetrates through the opening to be connected with the moving block (31).

3. The stamped intermediate lock of claim 1 or 2, wherein: backing plate (22) are including big backing plate (221) and little backing plate (222), the both sides of little backing plate (222) are provided with big backing plate (221) respectively, little backing plate (222) make and form between the big backing plate (221) of both sides and give way groove (223) towards one side shortfall of inclined plane groove (24) in big backing plate (221), the tip of lockpin pull rod (3) is located and gives way groove (223).

4. The stamped intermediate lock of claim 1, wherein: the section of the cam seat (1) is of a U-shaped structure, and the cam (2) is arranged in the cam seat (1).

5. The stamped intermediate lock of claim 4, wherein: two side surfaces of the cam seat (1) are provided with guide bar holes (11) along the sliding direction of the cam (2), guide wheels (23) are arranged on two sides of the cam (2), and the guide wheels (23) are arranged in the guide bar holes (11).

6. The stamped intermediate lock of claim 5, wherein: the end part of the middle pull rod (4) is provided with a pull rod shaft, and the pull rod shaft penetrates through the guide strip hole (11) to be connected with the cam (2).

7. The stamped intermediate lock of claim 4, 5 or 6, wherein: the cam seat (1) is provided with a thrust roller (5) corresponding to the lock pin pull rod (3), and the thrust roller (5) is positioned on one side of the lock pin pull rod (3) close to the pulling-out direction of the middle pull rod (4) and is abutted against the side face of the lock pin pull rod (3).

8. The stamped intermediate lock of claim 1, wherein: one side of the cam seat (1) is provided with a connecting cushion block (6), the other side of the cam seat is provided with a mounting bracket (7) used for being connected with a door frame body (8), the mounting bracket (7) is of an L-shaped structure, and the connecting cushion block (6) and the mounting bracket (7) are respectively connected with corresponding parts of the door frame body (8).