CN215927070U

CN215927070U - Electric control lock

Info

Publication number: CN215927070U
Application number: CN202122281688.3U
Authority: CN
Inventors: 朱宏恩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-03-01
Anticipated expiration: 2031-09-18

Abstract

An electric control lock relates to the technical field of electric control locks, and comprises a lock shell, and an ejector rod, a lever body, an electromagnet and a lock tongue which are arranged in the lock shell, wherein the left side and the right side inside the lock shell are respectively provided with the lock tongue and the electromagnet, the lever body is rotatably arranged at the lower parts of the lock tongue and a microswitch, a clamp spring is clamped on the right side surface of the lever body, a contact at the upper end of the clamp spring is positioned under a microswitch lower part handle, and the outer end part of the clamp spring is connected with an emergency unlocking mechanism after being sleeved with a slide rod; the lock tongue is rotatably connected in the lock shell through a rotating shaft, the upper part of the lock tongue is provided with a connecting surface matched with the bridge of the nose, and the rotating shaft of the lock tongue is positioned at the lower right part of the bridge of the nose; an ejector rod is arranged at the upper part inside the lock shell, a tension spring is arranged in a U-shaped opening of the ejector rod, one end of the tension spring is hung on a convex column on the left side of the upper part of the lock shell, and the other end of the tension spring is hung on a fixed shaft on the right side between two arms of the ejector rod; the utility model has simple and compact structure, realizes the accurate feedback of door opening or locking signals, and has stronger practicability and popularization.

Description

Electric control lock

Technical Field

The utility model relates to the technical field of electric control locks, in particular to an electric control lock.

Background

As is known, special electric control locks are arranged on various electric door-opening cabinets, such as a bag storage cabinet, a express delivery cabinet, a storage cabinet, a fresh-keeping cabinet, an automatic vending machine, a charging pile and an electric and network branching cabinet; the automatic spring-open door of the existing electric control lock mainly has two modes of an exposed ejector rod type and a toggle type, the ejector rod of the exposed ejector rod type after the spring-open door is exposed outside a lock body, and a long ejector rod is required to extend out of the lock body, so that the lock body is not beautiful; the toggle type door opening device pushes the door nose to automatically open the door by one toggle piece or directly by the swing of the torsion spring, and has the defects that the relative sliding friction between the toggle piece and the door nose when pushing can reduce the service life, and the service life of the torsion spring is also lower.

The existing design of the electric control lock also has the following disadvantages: 1. the swing center of a lock tongue of the electric control lock is right below the nose bridge of the door nose, the eccentric distance is larger due to structural limitation, so that the unlocking resistance of the electromagnet is also larger, and the resistance arm is larger and is easy to break under the worse stress condition; 2. the installation of the microswitch is generally fastened by screws, and the installation is troublesome, time-consuming and labor-consuming; the action of the switch is controlled by the advance of the lock tongue, so that the accurate feedback of a switch signal is difficult to achieve, and the service life of the switch can be reduced when the normal state of the switch is in a pressed high-energy state; 3. the traction action of the electromagnet is realized by inserting an inserted bar embedded in the lever into a hole on the sliding rod, an embedded part is easy to loosen, the sliding rod can be realized only by a turning, milling and drilling process, and the manufacturing cost is high; 4. the direction change of the emergency unlocking button is troublesome; 5. the bottom plate and the nose bridge of the door nose both adopt welding structures, and are easy to be desoldered and unreliable.

Disclosure of Invention

In order to overcome the defects in the background art, the utility model discloses an electric control lockset.

In order to realize the purpose, the utility model adopts the following technical scheme:

an electric control lock comprises a lock shell, an ejector rod, a lever body, an electromagnet and a lock tongue, wherein the ejector rod, the lever body, the electromagnet and the lock tongue are arranged in the lock shell;

the lock bolt is rotatably connected in the lock shell through a rotating shaft, the upper part of the lock bolt is provided with a connecting surface matched with the bridge of the nose, the rotating shaft of the lock bolt is positioned at the right lower part of the bridge of the nose, and the lower part of the lock bolt is provided with a stop surface matched with the left side of the lever body;

the upper part inside the lock shell is provided with a U-shaped ejector rod which is transversely arranged, a tension spring is arranged in a U-shaped opening of the ejector rod, one end of the tension spring is hung on a convex column on the left side of the upper part of the lock shell, the other end of the tension spring is hung on a fixed shaft on the right side between two arms of the ejector rod, the ejector rod moves left and right between fixed columns on two sides of the lower part and the upper surface of the lock shell, and a limiting boss is fixed on a concave arc surface at the lower part of the ejector rod.

The emergency unlocking mechanism of the electric control lock comprises a wire passing hole, a pull wire and a wire nose, the wire nose of the emergency lock is fixed at the outer end of the clamp spring, and the pull wire is fixedly connected with the wire nose through the wire passing hole in the outer side of the lock shell.

In the electric control lock, the clamp spring is U-shaped, the bottom of the right side of the clamp spring is in a trapezoidal flaring shape, two arms of the opening end of the clamp spring extend upwards to form bending parts, the bending parts of the two arms of the clamp spring are clamped in clamping grooves on two side surfaces of the right side of the lever body, a bent horizontal section extends from the upper end of the bending part on the inner side, and the upper surface of the horizontal section is a contact which is in contact with the switch handle;

the two arms and the bent part of the clamp spring are respectively clamped in L-shaped clamping grooves on the two side surfaces of the right side of the lever body, and the size and the shape of the clamping grooves are matched with the bent part of the clamp spring 11;

the upper part of the sliding rod is arranged in the electromagnet in a sliding mode, the lower end of the sliding rod is provided with an I-shaped section, a tower spring is arranged between the I-shaped section and the bottom of the electromagnet, and the I-shaped section is connected with the clamp spring in a sleeved mode through a trapezoidal flaring at the bottom of the right side of the clamp spring.

The electric control lockset is provided with a limit stop fixed on the lock shell on the left side between the lever body and the microswitch.

The nose bridge of the electric control lock is U-shaped and is riveted on the bottom plate.

The electric control lockset is characterized in that two clamping bosses are symmetrically arranged on the inner walls of two sides of the lock shell, the micro switch is positioned between the two clamping bosses, and the clamping bosses are provided with positioning convex circles of two limiting micro switches.

The electric control lockset is characterized in that two convex guide bosses are symmetrically arranged on the inner walls of two sides of the lock shell and are positioned on two sides of the spring bolt to limit the spring bolt to swing in the normal direction.

The electric control lockset is provided with a wire passing groove on the lock shell and is used for the penetration of a signal wire on the microswitch.

The two sides of the fixed columns on the two sides of the lower portion of the ejector rod are provided with nylon idler wheels.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

1. according to the electric control lockset, the ejector rod is concealed, is not exposed when the door is opened, is formed by stamping a metal plate, is internally provided with the tension spring, has a compact structure and long service life, and is provided with the nylon roller at the sliding friction part of the ejector rod, so that the friction force is effectively reduced;

2. according to the electric control lock, the two clamping bosses are symmetrically arranged in the lock shell, the two positioning convex circles on the clamping bosses enable the installation of the microswitch to avoid complicated operations of installation, installation and screwing, the production efficiency is improved, the action of the microswitch is controlled by the lever body, so that the accurate feedback of signals is realized, and the microswitch is in a free low-energy state without being pressed in a normal state; two guide bosses are symmetrically arranged in the lock shell to ensure that the lock tongue is not inclined in the swinging process, and the swinging center of the lock tongue is arranged below the side of the nose bridge, so that the resistance arm is greatly reduced, the stress condition is improved, the driving force is reduced, and the prying resistance of the lock is improved;

3. according to the electric control lock, the action of the microswitch is manually controlled by the lever body and the clamp spring instead of a common lock tongue. The lever body is instantly finished in the process of traction or release, so that feedback signals of locking or unlocking states cannot be delayed in advance, and accurate feedback of door opening or locking signals is realized; the microswitch is set to be in a free (low-energy) state which is not pressed and contacted when in an unlocking state, and is in a pressed (high-energy) state when in the unlocking state, so that the service life of the microswitch is prolonged; the utility model has simple structure, ingenious conception and compact structure, reduces the manufacturing and installation cost and has stronger practicability and popularization.

Drawings

Fig. 1 is a schematic view of the unlocked state of the present invention.

Fig. 2 is a schematic diagram of the locking state of the present invention.

Fig. 3 is a cross-sectional view a-a of fig. 1.

Fig. 4 is a sectional view of B-B in fig. 2.

FIG. 5 is a schematic structural view of the lock case of the present invention with a wire passing groove.

FIG. 6 is a front view of the bottom plate of the present invention securing the bridge of the nose.

Fig. 7 is a top view of fig. 6.

Fig. 8 is a left side view of fig. 6.

FIG. 9 is a schematic view of a connecting structure of the lever body and the clamp spring according to the present invention;

fig. 10 is a cross-sectional view of C-C in fig. 9.

Fig. 11 is a schematic structural view of the locking tongue and the engagement surface when locking according to the present invention.

Fig. 12 is a schematic structural diagram of a locking tongue and a locking surface in locking in the prior art.

In the figure: 1. a door nose; 2. a bridge of the nose; 3. a base plate; 4. a tension spring; 5. a limiting boss; 6. a top rod; 7. a lock case; 8. an electromagnet; 9. a tower spring; 10. a slide bar; 11. a clamp spring; 12. a lever body; 13. a contact; 14. a microswitch; 15. a switch handle; 16. a limiting gear; 17. a stop surface; 18. a latch bolt; 19. connecting the face; 20. an inlet port; 21. a wire passing hole; 22. a pull wire; 23. a wire nose; 24. a roller; 25. a guide boss; 26. positioning the convex circle; 27. clamping a boss; 28. a wire passing groove; 29. a bending part.

Detailed Description

The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.

The electric control lock set described with reference to fig. 1-12 comprises a lock case 7, a mandril 6, a lever body 12, an electromagnet 8 and a bolt 18 which are arranged in the lock case 7, wherein the bolt 18 and the electromagnet 8 are respectively arranged at the left side and the right side inside the lock case 7, a microswitch 14 is fixed at the lower part between the bolt 18 and the electromagnet 8, the lever body 12 is rotatably arranged at the lower parts of the bolt 18 and the microswitch 14, a clamp spring 11 is clamped on the right side surface of the lever body 12, a contact 13 at the upper end of the clamp spring 11 is positioned right below a switch handle 15 at the lower part of the microswitch 14, and the outer end part of the clamp spring 11 is connected with an emergency unlocking mechanism after being sleeved with a slide bar 10; the emergency unlocking mechanism comprises a wire passing hole 21, a pull wire 22 and a wire nose 23, the wire nose 23 of the emergency lock is fixed at the outer end part of the clamp spring 11, the pull wire 22 is fixedly connected with the wire nose 23 through the wire passing hole 21 at the outer side of the lock shell 7, and the pull wire 22 realizes emergency unlocking which is not limited by direction through the wire passing hole 21;

the bolt 18 is rotatably connected in the lock shell 7 through a rotating shaft, the upper part of the bolt 18 is provided with a connecting surface 19 matched with the nose bridge 2, the rotating shaft of the bolt 18 is positioned at the lower right part of the nose bridge 2, and the lower part of the bolt 18 is provided with a stop surface 17 matched with the left side of the lever body 12;

the upper portion of the inside of the lock shell 7 is provided with a U-shaped ejector rod 6 which is transversely arranged, an extension spring 4 is arranged in a U-shaped opening of the ejector rod 6, one end of the extension spring 4 is hung on a convex column on the left side of the upper portion of the lock shell 7, the other end of the extension spring is hung on a fixing shaft on the right side between two arms of the ejector rod 6, the ejector rod 6 moves left and right between fixing columns on two sides of the lower portion of the ejector rod 6 and the upper surface of the lock shell 7, nylon idler wheels 24 are arranged on two sides of the fixing columns on two sides of the lower portion of the ejector rod 6, and a limiting boss 5 is fixed on a concave arc surface on the lower portion of the ejector rod 6.

As shown in fig. 11-12, the clamp spring 11 is U-shaped, the bottom of the right side of the clamp spring 11 is a trapezoidal flaring shape, two arms of the opening end of the clamp spring 11 extend upward bending portions, the bending portions of the two arms of the clamp spring 11 are clamped in clamping grooves on two side surfaces of the right side of the lever body 12, a bent horizontal section extends from the upper end of the bending portion on the inner side edge, and the upper surface of the horizontal section is a contact 13 in contact with the switch handle 15, so that the micro-precision adjustment of the trigger point is easily realized; the two arms and the bent part of the clamp spring 11 are respectively clamped in L-shaped clamping grooves on the two side surfaces of the right side of the lever body 12, and the size and the shape of the clamping grooves are matched with the bent part of the clamp spring 11, so that the assembly structure is firm and reliable and cannot be loosened.

The upper part of the sliding rod 10 is arranged in the electromagnet 8 in a sliding mode, the lower end of the sliding rod is provided with an I-shaped section, a tower spring 9 is arranged between the I-shaped section and the bottom of the electromagnet 8, and the I-shaped section is connected with a clamp spring 11 in a sleeved mode through a trapezoidal flaring at the bottom of the right side of the clamp spring 11.

Furthermore, a limit stop 16 fixed on the lock case 7 is arranged on the left side between the lever body 12 and the microswitch 14.

As shown in the attached figures 6-8, the nose bridge 2 is U-shaped, and the nose bridge 2 is riveted on the bottom plate 3, so that the connection is firm and reliable.

Furthermore, two clamping bosses 27 are symmetrically arranged on the inner walls of two sides of the lock shell 7, the micro switch 14 is positioned between the two clamping bosses 27, and the clamping bosses 27 are respectively provided with two positioning convex circles 26 for limiting the micro switch 14; two convex guide bosses 25 are symmetrically arranged on the inner walls of two sides of the lock shell 7 and positioned on two sides of the bolt 18 to limit the bolt 18 to swing in the normal direction, namely swing in the directions of two side faces of the bolt 18; a wire passing groove 28 is arranged on the lock shell 7 and is used for the penetration of a signal wire on the microswitch 14 and providing a channel for the signal wire.

When the electric control lock is in an unlocking state and needs to be locked, the nose bridge 2 enters the lock body through the introducing port 20 on the lock shell 7, the ejector rod 6 is pushed to move rightwards, the bolt 18 is pushed to rotate clockwise after being contacted with the bolt 18, after the stop surface 17 on the right side of the lower part of the bolt 18 rotates over the head on the left side of the lever body 12, the lever body 12 is quickly reset and locked under the elastic force of the tower spring 9, the switch handle 15 is released, and the micro switch 14 is reset; after the door closing force is removed, the ejector rod 6 rebounds under the tension of the tension spring 4 to drive the nose bridge 2 to move back, and after the ejector rod contacts the connecting surface 19, the locking process is finished because the end part of the lever is clamped on the stopping surface 17 and is blocked.

When the electric control lock is in an unlocked state, the electromagnet 8 is powered on, the sliding rod 10 moves upwards under the action of electromagnetic force, the clamp spring 11 and the lever body 12 are driven to rotate, the contact 13 at the upper end of the clamp spring 11 presses the switch handle 15 to trigger the switch to act, the lever body 12 continues to rotate and is separated from the stop surface 17, the lock tongue 18 loses support, the ejector rod 6, the door nose 1 and the nose bridge 2 are driven to move leftwards under the action of the tensile force of the tension spring 4, the lock tongue 18 is forced to rotate anticlockwise, the stop surface 17 stops when contacting the limit stop 16, the top end of the ejector rod 6 is pressed on the side wall of the lock shell, the door nose 1 is ejected out of the inlet 20, and the lock is unlocked, as shown in figure 1; at the moment, the limiting boss 5 is close to the bolt 18, so that the bolt 18 is limited to freely reset, and clamping stagnation during locking is avoided.

As shown in fig. 11, the vertical distance from the normal direction of the contact point of the engagement face 19 and the nose bridge 2 to the rotation center of the locking tongue 18 is a resistance arm, the eccentricity B is a resistance arm, the conventional scheme is as shown in fig. 12, the rotation center is arranged right below the nose bridge 2 in the conventional scheme, and the resistance arm cannot be made very small due to the size limitation of a shaft sleeve, the resistance arm B is not less than or equal to (D + D)/2, a =0 or is close to 0, wherein D is the diameter of the rotation shaft sleeve, D is the diameter of the contact point of the nose bridge 2, and a is the distance between the rotation center and the contact point of the nose bridge 2 after being locked; the utility model arranges the rotation center of the bolt 18 below the side of the nose bridge 2, thus avoiding the size limitation of the shaft sleeve; the resistance arm B is less than D/2, and A is more than or equal to (D + D)/2; therefore, the resistance arm is reduced as much as possible, the transmission ratio of the lock can reach more than 10, the driving force of the electromagnet 8 is reduced, and the one-time unlocking success rate is improved.

The present invention is not described in detail in the prior art.

The embodiments selected for the purpose of disclosing the utility model, are presently considered to be suitable, it being understood, however, that the utility model is intended to cover all variations and modifications of the embodiments falling within the scope of the inventive concept and the utility model.

Claims

1. The utility model provides an automatically controlled tool to lock, includes lock shell and sets up ejector pin, lever body, electro-magnet and the spring bolt in the lock shell, characterized by: the left side and the right side inside the lock shell are respectively provided with a lock tongue and an electromagnet, a microswitch is fixed at the lower part between the lock tongue and the electromagnet, a lever body is rotationally arranged at the lower parts of the lock tongue and the microswitch, a clamp spring is clamped on the right side surface of the lever body, a contact at the upper end of the clamp spring is positioned right below a switch handle at the lower part of the microswitch, and the outer end part of the clamp spring is connected with an emergency unlocking mechanism after being sleeved with a slide rod;

2. An electrically controlled lock according to claim 1 wherein: the emergency unlocking mechanism comprises a wire passing hole, a pull wire and a wire nose, the wire nose of the emergency lock is fixed at the outer end of the clamp spring, and the pull wire is fixedly connected with the wire nose through the wire passing hole in the outer side of the lock shell.

3. An electrically controlled lock according to claim 1 wherein: the clamp spring is U-shaped, the bottom of the right side of the clamp spring is in a trapezoidal flaring shape, two arms of the opening end of the clamp spring extend upwards to form bending parts, the bending parts of the two arms of the clamp spring are clamped in clamping grooves on the two side surfaces of the right side of the lever body, a bent horizontal section extends from the upper end of the bending part on the inner side edge, and the upper surface of the horizontal section is a contact which is in contact with the switch handle;

the two arms and the bent part of the clamp spring are respectively clamped in L-shaped clamping grooves on the two side surfaces of the right side of the lever body, and the size and the shape of each clamping groove are matched with the bent part of the clamp spring (11);

4. An electrically controlled lock according to claim 1 wherein: a limit stop fixed on the lock shell is arranged on the left side between the lever body and the microswitch.

5. An electrically controlled lock according to claim 1 wherein: the nose bridge is U-shaped and riveted on the bottom plate.

6. An electrically controlled lock according to claim 1 wherein: two clamping bosses are symmetrically arranged on the inner walls of two sides of the lock shell, the micro switch is positioned between the two clamping bosses, and the clamping bosses are provided with positioning convex circles of two limiting micro switches.

7. An electrically controlled lock according to claim 1 wherein: two convex guide bosses are symmetrically arranged on the inner walls of the two sides of the lock shell and are positioned on the two sides of the lock tongue to limit the lock tongue to swing in the normal direction.

8. An electrically controlled lock according to claim 1 wherein: the lock shell is provided with a wire passing groove for the penetration of a signal wire on the microswitch.

9. An electrically controlled lock according to claim 1 wherein: nylon rollers are arranged on two sides of the fixing column on the two sides of the lower part of the ejector rod.