CN212945371U

CN212945371U - Spring lock type mechanical safety lock

Info

Publication number: CN212945371U
Application number: CN202021301740.6U
Authority: CN
Inventors: 居庆贺
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-13
Anticipated expiration: 2030-07-06

Abstract

The utility model belongs to the technical field of mechanical locks, in particular to a latch type mechanical safety lock, which comprises a lock head and a lock body, wherein the lock head is internally provided with a pin hole in a left-right extending way, a stop pin is arranged at the inner side of the pin hole in a sliding way, a guide groove is horizontally arranged at the right side of the stop pin in a sliding way and is connected with a guide strip, an inner thread hole arranged at the right end surface of the stop pin is meshed with a trapezoidal screw rod, the right end of the trapezoidal screw rod is connected with a driven gear through a connecting shaft, a connecting piece is arranged on a rotating shaft of a driving gear meshed and connected with the driven gear, the side surface of the connecting piece is connected with one end of a pressure lever, the other end of the pressure lever passes through a movable groove arranged at the side surface of the lock body, the side surface of the pressure lever is connected with, the tension spring can ensure that the device is in a normally closed state, and the operation safety is greatly improved.

Description

Spring lock type mechanical safety lock

Technical Field

The utility model belongs to the technical field of the mechanical lock, concretely relates to spring lock formula mechanical safety lock.

Background

The clamping mechanism of die casting machine generally comprises three templates and four tiebar posts, three templates are head plate, tail plate and medium plate respectively usually, die casting die fixes usually on head plate and medium plate, the medium plate can make reciprocating motion along four tiebar posts, realize opening and shutting the mould action, and because the volume of die casting machine is great usually, if the procedure of die casting machine makes mistakes or operator misoperation, probably cause the casualties, traditional die casting machine has the potential safety hazard in the in-process of moulding plastics often, when the die casting machine has not stopped work completely yet, if operating personnel puts into the die casting machine carelessly with the hand, often lead to the emergence of personal safety accident, when electric apparatus or hydraulic system broke down or logic mistake simultaneously, the die casting machine chance produces the malfunction and closes the mould and causes great incident.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a spring lock formula mechanical safety lock, the safety locking is accomplished to the pure mechanical structure of accessible, and the security and the stability of this device can further be improved to the auto-lock nature between internal thread hole and the trapezoidal screw rod, and the extension spring can guarantee that this device is normally closed state, the security of greatly increased operation.

In order to achieve the above object, the utility model provides a following technical scheme: a spring lock type mechanical safety lock comprises a lock head and a lock body, wherein a pin hole is formed in the lock head in a left-right extending mode, a stop pin is installed on the inner side of the pin hole in a sliding mode, a lock tongue is fixedly connected to the left end of the stop pin, a guide groove is horizontally formed in the right side of the stop pin, a guide strip is connected to the inner side of the guide groove in a sliding mode, an inner threaded hole is formed in the right end face of the stop pin in a meshed mode and connected with a trapezoidal screw rod, the right end of the trapezoidal screw rod is fixedly connected with a driven gear through a connecting shaft, the driven gear is connected with a driving gear on one side in a meshed mode, a connecting piece is fixedly installed on a rotating shaft of the driving gear, one end of a pressing rod is fixedly connected to the side face of the connecting piece, the, the fixing plate is provided with an inner hexagonal threaded through hole.

Preferably, the number of the guide grooves is multiple, the guide grooves are arranged on the right side of the stop pin in an annular equal sequence, the guide grooves penetrate through the right end face of the stop pin, the number of the guide strips is the same as that of the guide grooves, and the guide strips are arranged on the inner wall of the lock body in an annular equal sequence; the guide slot and the guide strip are matched to play a role in limiting and guiding, the stability of the stop pin moving in the lock body can be improved, and the stop pin can make linear displacement motion in the inner side of the lock body by matching with the internal thread hole and the trapezoidal screw rod.

Preferably, the length of the trapezoidal screw is not less than that of the internal threaded hole, the left end of the connecting shaft is fixedly connected with the right end face of the trapezoidal screw, and the right end of the connecting shaft is rotatably connected with the inner side wall of the lock body; the stop pin can linearly reciprocate on the inner side of the lock body by rotating the trapezoidal screw rod in different directions, so that the lock tongue is changed in the extending and retracting states, the locking of the electrified mechanical equipment is completed through a pure mechanical structure, the safety accidents caused by faults or logic errors of an electric appliance or a hydraulic system are avoided, and the self-locking characteristic is arranged between the internal thread hole and the trapezoidal screw rod, so that the safety and the stability of the device can be further improved.

Preferably, a driven gear is fixedly installed on the outer side of the connecting shaft in the lock body, the diameter of the driven gear is not larger than that of the driving gear, and two ends of the rotating shaft are rotatably connected with the inner side wall of the lock body; the user uses the depression bar to drive gear and rotates, and then when transmission driven gear makes the connecting axle rotate and unblanks or block, drive gear can play the increase drive ratio, reduces the turned angle's of depression bar effect, and then reduces the swing range of arm when user uses the depression bar, has made things convenient for user's operation greatly.

Preferably, a fixing ring is fixedly installed on the upper side face of the pressure lever, the fixing ring is fixedly connected with one end of a tension spring, and the other end of the tension spring is fixedly connected with the inner top face of the lock body; when the user promotes the depression bar, the extension spring receives the pulling force of depression bar to produce elastic deformation, the depression bar uses the connecting piece to rotate as the axle center, the connecting piece rethread drive gear, driven gear, the connecting axle drives trapezoidal screw and rotates and accomplish the action of unblanking, after the user relieves the depression bar, the extension spring recovers to drive the depression bar and removes and reset, the depression bar drives the connecting piece antiport and then accomplishes a series of shutting actions this moment, so guaranteed this device be normal close state, can avoid forgetting to carry out the use inefficacy that the shutting operation caused the device because of operating personnel.

Preferably, the movable groove is a square groove vertically formed, the diameter of the pressure rod is not greater than the inner width of the movable groove, and the length of the guide bar is not greater than the length of the guide groove; the movable groove can limit the rotation angle of the pressure lever, and the problem that the trapezoidal screw is separated from the inner threaded hole due to the overlarge rotation angle of the pressure lever, so that the structure of the device is failed is avoided.

Preferably, the bottom surface of the fixing plate is flush with the bottom surface of the lock body, and the bottom surface of the lock head is flush with the bottom surface of the lock body; the flat bottom surface of the device can facilitate the installation and the use of the device.

Preferably, the inner hexagonal threaded through hole penetrates through the upper end surface and the lower end surface of the fixing plate; the user can use the hexagon socket head cap screw to carry out stable fixed connection with each mechanical equipment with this device is stable.

Compared with the prior art, the beneficial effects of the utility model are that: the guide groove and the guide strip are matched to play a role in limiting and guiding, so that the moving stability of the stop pin in the lock body can be improved, and meanwhile, the stop pin can make linear displacement motion on the inner side of the lock body by matching with the internal threaded hole and the trapezoidal screw; the stop pin can linearly reciprocate on the inner side of the lock body by rotating the trapezoidal screw rod to different directions, so that the lock tongue is changed in the extending and retracting states, the locking of the electrified mechanical equipment is completed through a pure mechanical structure, the safety accidents caused by faults or logic errors of an electric appliance or a hydraulic system are avoided, and the self-locking characteristic is arranged between the internal thread hole and the trapezoidal screw rod, so that the safety and the stability of the device can be further improved; when a user uses the pressure rod to drive the driving gear to rotate, and further drives the driven gear to enable the connecting shaft to rotate to unlock or lock, the driving gear can play a role in increasing the transmission ratio and reducing the rotation angle of the pressure rod, so that the swinging amplitude of an arm when the user uses the pressure rod is reduced, and the operation of the user is greatly facilitated; when a user pushes the pressure lever, the tension spring is elastically deformed by the tension of the pressure lever, the pressure lever rotates by taking the connecting piece as an axis, the connecting piece drives the trapezoidal screw to rotate through the driving gear, the driven gear and the connecting shaft to complete unlocking action, after the user releases the pressure lever, the tension spring is restored to drive the pressure lever to move and reset, and the pressure lever drives the connecting piece to reversely rotate to complete a series of locking actions, so that the normally closed state of the device is ensured, and the use failure of the device caused by forgetting to lock the device by the operator can be avoided; the movable groove can limit the rotation angle of the pressure lever, so that structural failure of the device caused by the fact that the trapezoidal screw is separated from the internal threaded hole due to the fact that the rotation angle of the pressure lever is too large is avoided; the flat bottom surface of the device can facilitate the installation and use of the device; the user can use the hexagon socket head cap screw to carry out stable fixed connection with each mechanical equipment with this device is stable.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a front cross-sectional view of the present invention in an extended state;

fig. 2 is a front sectional view of the present invention in a retracted state;

fig. 3 is a top cross-sectional view of the present invention in an extended state;

fig. 4 is a top sectional view of the present invention in a retracted state;

in the figure: 1. a lock head; 2. a lock body; 3. a pin hole; 4. a stop pin; 5. a guide groove; 6. conducting bars; 7. an internally threaded bore; 8. a trapezoidal screw; 9. a connecting shaft; 10. a driven gear; 11. a drive gear; 12. a rotating shaft; 13. a connecting member; 14. a pressure lever; 15. a movable groove; 16. a fixing ring; 17. a tension spring; 18. a fixing plate; 19. a hexagonal socket head thread through hole; 20. and a lock tongue.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-4, the present invention provides the following technical solutions: a latch type mechanical safety lock comprises a lock head 1 and a lock body 2, a pin hole 3 is formed in the lock head 1 in a left-right extending mode, a stop pin 4 is installed on the inner side of the pin hole 3 in a sliding mode, a lock tongue 20 is fixedly connected to the left end of the stop pin 4, a guide groove 5 is horizontally formed in the right side of the stop pin 4, an inner side sliding connection guide strip 6 of the guide groove 5 is connected with the right end face of the stop pin 4 in a sliding mode, an inner threaded hole 7 is formed in the right end face of the stop pin 4, the inner threaded hole 7 is meshed with a trapezoidal screw 8, the right end of the trapezoidal screw 8 is fixedly connected with a driven gear 10 through a connecting shaft 9, the driven gear 10 is meshed with a driving gear 11 on one side, a connecting piece 13 is fixedly installed on a rotating shaft 12 of the driving gear 11, one end of a pressing rod 14 is fixedly connected to the side face of the, the outer side of the lock body 2 is symmetrically provided with a fixing plate 18, and the fixing plate 18 is provided with an inner hexagonal threaded through hole 19.

Specifically, the number of the guide grooves 5 is multiple, the guide grooves 5 are arranged on the right side of the stop pin 4 in an annular equal sequence, the guide grooves 5 penetrate through the right end face of the stop pin 4, the number of the guide strips 6 is the same as that of the guide grooves 5, and the guide strips 6 are arranged on the inner wall of the lock body 2 in an annular equal sequence; the guide slot 5 and the guide strip 6 are matched to play a role of limiting and guiding, so that the stability of the stop pin 4 moving in the lock body 2 can be improved, and the stop pin 4 can make linear displacement motion in the inner side of the lock body 2 by matching with the internal thread hole 7 and the trapezoidal screw 8.

Specifically, the length of the trapezoidal screw 8 is not less than that of the internal threaded hole 7, the left end of the connecting shaft 9 is fixedly connected with the right end face of the trapezoidal screw 8, and the right end of the connecting shaft 9 is rotatably connected with the inner side wall of the lock body 2; the stop pin 4 can make linear reciprocating movement on the inner side of the lock body 2 by rotating the trapezoidal screw 8 in different directions, so that the lock tongue 20 is changed in the extending and retracting states, the locking of the electrified mechanical equipment is completed through a pure mechanical structure, the safety accidents caused by faults or logic errors of an electric appliance or a hydraulic system are avoided, and the self-locking characteristic is arranged between the internal thread hole 7 and the trapezoidal screw 8, so that the safety and the stability of the device can be further improved.

Specifically, a driven gear 10 is fixedly installed on the outer side of a connecting shaft 9 in the lock body 2, the diameter of the driven gear 10 is not larger than that of the driving gear 11, and two ends of a rotating shaft 12 are rotatably connected with the inner side wall of the lock body 2; the user uses depression bar 14 to drive gear 11 and rotates, and then when transmission driven gear 10 made connecting axle 9 rotate and unblank or block, drive gear 11 can play the increase drive ratio, reduces depression bar 14's turned angle's effect, and then reduces the swing range of arm when the user uses depression bar 14, has made things convenient for user's operation greatly.

Specifically, a fixing ring 16 is fixedly installed on the upper side surface of the pressure lever 14, the fixing ring 16 is fixedly connected with one end of a tension spring 17, and the other end of the tension spring 17 is fixedly connected with the inner top surface of the lock body 2; when a user pushes the pressing rod 14, the tension spring 17 is elastically deformed by the tensile force of the pressing rod 14, the pressing rod 14 rotates by taking the connecting piece 13 as an axis, the connecting piece 13 drives the trapezoidal screw 8 to rotate through the driving gear 11, the driven gear 10 and the connecting shaft 9 to complete unlocking, after the user releases the pressing rod 14, the tension spring 17 restores to drive the pressing rod 14 to move and reset, the pressing rod 14 drives the connecting piece 13 to reversely rotate to complete a series of locking actions, the normally closed state of the device is ensured, and the use failure of the device caused by forgetting to perform locking operation by the operator can be avoided.

Specifically, the movable groove 15 is a square groove vertically formed, the diameter of the pressure lever 14 is not greater than the inner width of the movable groove 15, and the length of the guide bar 6 is not greater than the length of the guide groove 5; the movable groove 15 can limit the rotation angle of the pressure lever 14, and the structural failure of the device caused by the fact that the trapezoidal screw 8 is separated from the internal threaded hole 7 due to the fact that the rotation angle of the pressure lever 14 is too large is avoided.

Specifically, the bottom surface of the fixing plate 18 is flush with the bottom surface of the lock body 2, and the bottom surface of the lock head 1 is flush with the bottom surface of the lock body 2; the flat bottom surface of the device can facilitate the installation and the use of the device.

Specifically, the hexagonal socket screw through hole 19 penetrates through the upper and lower end surfaces of the fixing plate 18; the user can use the hexagon socket head cap screw to carry out stable fixed connection with each mechanical equipment with this device is stable.

The working principle and the using process of the invention are as follows: when a user uses the inner hexagonal screw, the device is installed at a proper position through the inner hexagonal thread through hole 19 on the fixing plate 18, when the mold locking condition is met and the mold locking requirement is met, the user pushes the pressure lever 14, the pressure lever 14 rotates by taking the connecting piece 13 as an axis, the connecting piece 13 drives the driving gear 11 to rotate through the rotating shaft 12, the driving gear 11 is meshed with the driven gear 10, the driven gear 10 drives the trapezoidal screw 8 to rotate through the connecting shaft 9, the trapezoidal screw 8 is meshed with the internal thread hole 7 at the right end of the driving stop pin 4, the stop pin 4 moves towards the left end of the lock head 1 under the limiting action of the guide groove 5 and the guide strip 6, the lock tongue 20 extends out of the inner side of the pin hole 3 to complete the unlocking action, at the moment, the tension spring 17 is elastically deformed by the pulling force of the pressure lever 14, after the user releases the pressure lever 14, the tension spring 17 returns to drive, therefore, the device is ensured to be in a normally closed state, and the use failure of the device caused by forgetting to lock the device by an operator can be avoided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A latch type mechanical safety lock is characterized in that: the lock comprises a lock head (1) and a lock body (2), a pin hole (3) extends leftwards and rightwards in the lock head (1), a stop pin (4) is arranged on the inner side of the pin hole (3) in a sliding mode, a lock tongue (20) is fixedly connected to the left end of the stop pin (4), a guide groove (5) is horizontally formed in the right side of the stop pin (4), a guide strip (6) is connected to the inner side of the guide groove (5) in a sliding mode, an internal thread hole (7) is formed in the right end face of the stop pin (4), a trapezoidal screw (8) is connected to the internal thread hole (7) in a meshing mode, the right end of the trapezoidal screw (8) is fixedly connected with a driven gear (10) through a connecting shaft (9), the driven gear (10) is connected with a driving gear (11) on one side in a meshing mode, a connecting piece (13) is fixedly installed on a, the other end of depression bar (14) passes activity groove (15) that lock body (2) side was seted up, the one end of extension spring (17) is connected through solid fixed ring (16) in the side of depression bar (14), fixed plate (18) are installed to the outside symmetry of lock body (2), hexagonal screw through-hole (19) have been seted up on fixed plate (18).

2. A latch-type mechanical safety lock according to claim 1, wherein: the quantity of guide slot (5) is a plurality of, and the hoop is the preface and is seted up the right side of backing pin (4), guide slot (5) link up the right-hand member face of backing pin (4), gib (6) with the quantity of guide slot (5) is the same, gib (6) hoop is installed the equiphase on the inner wall of lock body (2).

3. A latch-type mechanical safety lock according to claim 1, wherein: the length of trapezoidal screw rod (8) is not less than the length of internal thread hole (7), the right-hand member of the left end fixed connection trapezoidal screw rod (8) of connecting axle (9), the right-hand member of connecting axle (9) rotates and connects the inside wall of lock body (2).

4. A latch-type mechanical safety lock according to claim 1, wherein: the outside fixed mounting driven gear (10) of connecting axle (9) in lock body (2), the diameter of driven gear (10) is not more than the diameter of drive gear (11), the both ends of pivot (12) are rotated and are connected the inside wall of lock body (2).

5. A latch-type mechanical safety lock according to claim 1, wherein: the side fixed mounting that goes up of depression bar (14) is solid fixed ring (16), gu fixed ring (16) fixed connection extension spring (17) one end, the interior top surface of the other end fixed connection lock body (2) of extension spring (17).

6. A latch-type mechanical safety lock according to claim 1, wherein: the movable groove (15) is a square groove which is vertically arranged, the diameter of the pressure lever (14) is not more than the inner width of the movable groove (15), and the length of the guide strip (6) is not more than the length of the guide groove (5).

7. A latch-type mechanical safety lock according to claim 1, wherein: the bottom surface of the fixed plate (18) is flush with the bottom surface of the lock body (2), and the bottom surface of the lock head (1) is flush with the bottom surface of the lock body (2).

8. A latch-type mechanical safety lock according to claim 1, wherein: the inner hexagonal thread through hole (19) penetrates through the upper end face and the lower end face of the fixing plate (18).