CN211736769U

CN211736769U - Safety lock

Info

Publication number: CN211736769U
Application number: CN201922442470.4U
Authority: CN
Inventors: 刘佑湧; 朱鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-23
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a safety lock, which comprises a support, a lock rod, a sleeve and a safety limiting device which are arranged on the end wall of a metal box, wherein the end wall is provided with a through hole, and the side wall corresponding to the end wall is provided with a clamping groove; the lock rod is slidably and rotatably arranged on the support, and the front end of the lock rod is provided with a hook part which is clamped in the clamping groove or is accommodated in the through hole; the sleeve is slidably and rotatably sleeved on the lock rod, and a handle is fixedly arranged on the sleeve; the front end of the lock rod is provided with a bulge, and the front end of the sleeve is provided with a groove; the lower part of the support is provided with a notch for placing the handle, and the safety limiting device is arranged at the notch to limit the handle to swing outwards. The utility model discloses an end wall and lateral wall locking back together because recess and arch are for breaking away from the state, can't make the sleeve drive locking lever upswing through the upwards swing handle, have guaranteed that the portion of colluding of locking lever can stably the joint in the draw-in groove, have greatly guaranteed security and reliability that end wall and lateral wall are connected.

Description

Safety lock

Technical Field

The utility model relates to a safety lock, especially indicate a safety lock for transporting on the metal carton of easy creep material.

Background

In shipping creep-prone materials, such as synthetic rubber, it is often desirable to load the creep-prone material into a metal box. To facilitate the handling of goods and the transport of empty containers in a stacked manner, the ends and side walls of the metal boxes are usually provided in a detachable or foldable manner. The end wall of the existing metal box is required to be provided with a lockset connected with the adjacent side wall upright post so as to lock the adjacent end wall and the adjacent side wall, so that the end wall and the side wall can be kept in a relatively fixed state when goods are loaded, and the use reliability and the safety of the metal box are ensured. However, the existing lock sets a clipping hole on the adjacent side wall upright post, and a protrusion is arranged at the front end of the lock rod. When the adjacent end wall and the adjacent side wall need to be locked, the locking rod needs to be swung manually firstly to adjust the position of the protrusion, so that the protrusion can be aligned with the clamping hole, then the front end and the protrusion of the locking rod are pushed to extend into the clamping hole, and finally the locking rod is swung manually in the reverse direction, so that the protrusion clamps the side wall of the clamping hole, and the adjacent end wall and the adjacent side wall are locked together. The lock with the structure can release the bulge from the clamping hole only by applying upward pull force on the lock rod, so that the end wall and the side wall of the metal box are unlocked. Although the unlocking structure is simple to operate, misoperation is easy to occur, the end wall and the side wall are easily separated, the end wall and the side wall are toppled to injure workers, and the reliability and the safety are poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the safety lock on the current metal box and have the unblock too simple, appear the maloperation easily and lead to end wall and lateral wall separation easily for end wall and lateral wall are emptyd and are injured the workman by a crashing object, and reliability and security poor problem provide a simple structure, safety in utilization and the high safety lock of reliability.

The purpose of the utility model can be achieved by adopting the following technical scheme:

a safety lock comprises a support, a lock rod, a sleeve and a safety limiting device, wherein the support, the lock rod, the sleeve and the safety limiting device are arranged on the end wall of a metal box; the lock rod is slidably and rotatably arranged on the support, and the front end of the lock rod is provided with a hook part which is clamped in the clamping groove or is accommodated in the through hole; the sleeve is slidably and rotatably sleeved on the lock rod, and a handle is fixedly arranged on the sleeve; the front end of the lock rod is provided with a bulge, and the front end of the sleeve is provided with a groove; the lower part of the support is provided with a notch for placing a handle, and the safety limiting device is arranged at the notch to limit the handle to swing outwards; before the end wall and the side wall are locked, the sleeve slides forwards and rotates to clamp the protrusion into the groove, the sleeve pushes the hook part of the lock rod out of the through hole and drives the hook part to rotate and hook the clamping groove to form a locking structure; the sleeve slides backwards to separate the protrusion from the groove, the handle is rotated into the notch, and the safety limiting device closes the notch to limit the handle in the notch to form a limiting structure.

As a preferred scheme, the safety limiting device comprises a limiting block, a control rod and an elastic piece, wherein the limiting block can be arranged at the lower part of the support in a swinging mode; the control rod is fixedly connected with the limiting block to control the limiting block to overcome the elasticity of the elastic piece to open the notch.

As a preferred scheme, a guide rod is arranged at the bottom of the support, the elastic part is arranged on the guide rod, and two ends of the elastic part respectively press the support and the limiting block.

As a preferred scheme, the tail end of the lock rod is provided with a pin, after the sleeve slides backwards to remove the protrusion from the groove, the tail end of the sleeve presses the pin to drive the lock rod to slide backwards, and the hook part is accommodated in the through hole.

As a preferable scheme, the limiting block is rotatably mounted on the support through a rotating shaft.

Preferably, the elastic member is a spring.

Implement the utility model discloses, following beneficial effect has:

1. when the end wall and the side wall of the metal box need to be locked together, the safety limiting device is firstly opened, and then the handle is swung upwards to be separated from the notch; then the handle is pushed, the groove at the front end of the handle is clamped on the protrusion, the lock rod is pushed to slide forwards, and the hook part slides out of the through hole and extends into the clamping groove; and then the handle is swung downwards, the handle drives the protrusion to swing downwards through the groove, so that the driving lock rod swings, the hook part of the lock rod is clamped in the clamping groove, and the locking connection between the end wall and the side wall is completed. After the end wall and the side wall of the metal box are locked together, the structure enables the groove to be separated from the protrusion by pushing the handle and sliding the handle rod backwards, opens the safety limiting device and swings the handle downwards to be sleeved in the groove opening when the handle slides to the groove opening position, and finally closes the safety limiting device and limits the handle in the groove opening. The back is in the same place in the end wall and the lateral wall locking of this structure, because recess and arch are the break away from the state, can't make the sleeve drive locking lever upwards swing through the upwards swing handle, has guaranteed that the portion of colluding of locking lever can joint in the draw-in groove steadily, has greatly guaranteed security and reliability that end wall and lateral wall are connected. Namely, when the end wall and the side wall need to be unlocked, the unlocking can be realized through the following two steps in sequence: 1. opening the safety limiting device, and swinging the handle upwards to be separated from the notch; 2. the handle is pushed forwards to enable the groove to be clamped with the protrusion, and then the handle is swung downwards to enable the hook part to be separated from the clamping groove. Therefore, the unlocking device has a double protection structure during unlocking, and can realize unlocking only through two operations, so that the reliability and the safety of the operation are greatly improved.

2. The utility model discloses under the normality, the notch is closed to the stopper under the spring action of elastic component for the cover is located the intraoral handle of notch and is restricted and unable upswing is deviate from, prevents that the handle from deviating from easily and driving the locking lever swing when the effect that receives external force. When the handle needs to be swung upwards to be separated from the notch, the control rod only needs to be swung, the limiting block overcomes the elasticity of the elastic piece to open the notch, and the handle can be swung upwards to be separated from the notch.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an exploded view of the safety lock of the present invention mounted on a metal case;

FIG. 2 is a schematic structural view of the safety lock of the present invention in a locked state;

FIG. 3 is a schematic view of the safety lock according to the present invention when the handle swings upward;

FIG. 4 is a schematic structural view of the safety lock of the present invention when the groove and the protrusion are engaged together;

FIG. 5 is a schematic structural view of the safety lock of the present invention when the hook of the sleeve-driven lock rod is disengaged from the slot;

fig. 6 is a schematic structural view of the hook portion of the safety lock of the present invention when being accommodated in the through hole.

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.

Examples

Referring to fig. 1 to 6, the present embodiment relates to a safety lock, which includes a support 1, a lock rod 2, a sleeve 3 and a safety limiting device 4, which are arranged on an end wall 10 of a metal box, wherein the end wall 10 is provided with a through hole 12, and a side wall 11 corresponding to the end wall 10 is provided with a clamping groove; the lock rod 2 is slidably and rotatably arranged on the support 1, a hook part 21 is arranged at the front end of the lock rod 2, and the hook part 21 is clamped in the clamping groove or is accommodated in the through hole 12; the sleeve 3 is sleeved on the lock rod 2 in a sliding and rotating mode, and a handle 31 is fixedly installed on the sleeve 3; the front end of the lock rod 2 is provided with a bulge 22, and the front end of the sleeve 3 is provided with a groove 32; the lower part of the support 1 is provided with a notch 13 for placing a handle 31, and the safety limiting device 4 is arranged at the notch 13 to limit the handle 31 to swing outwards; before the end wall 10 and the side wall 11 are locked, the sleeve 3 slides forwards and rotates to clamp the protrusion 22 into the groove 32, and the sleeve 3 pushes the hook part 21 of the lock rod 2 out of the through hole 12 and drives the hook part 21 to rotate and hook the clamp groove to form a locking structure; the sleeve 3 slides backwards to remove the protrusion 22 from the groove 32, the handle 31 is rotated into the notch 13, and the safety limiting device 4 closes the notch 13 to limit the handle 31 in the notch 13, so as to form a limiting structure.

When the end wall 10 and the side wall 11 of the metal box need to be locked together, the safety limiting device 4 is firstly opened, and then the handle 31 is swung upwards to enable the handle 31 to be pulled out of the notch 13; then the handle 31 is pushed, the groove 32 at the front end of the handle 31 is clamped on the protrusion 22 and the lock rod 2 is pushed to slide forwards, so that the hook part 21 slides out of the through hole 12 and extends into the clamping groove; and then the handle 31 is swung downwards, the handle 31 drives the protrusion 22 to swing downwards through the groove 32, so that the driving lock rod 2 swings, and the hook part 21 of the lock rod 2 is clamped in the clamping groove, thereby completing the locking connection between the end wall 10 and the side wall 11. After locking the end wall 10 and the side wall 11 of the metal case together, the present structure slides the lock lever 2 backward by pushing the handle 31 to separate the groove 32 from the protrusion 22, and opens the safety stopper 4 and swings the handle 31 downward to fit into the notch 13 when the handle 31 is slid to the position of the notch 13, and finally closes the safety stopper 4 while the handle 31 is restricted in the notch 13. After the end wall 10 and the side wall 11 of the structure are locked together, because the groove 32 and the protrusion 22 are in a separation state, the sleeve 3 cannot drive the lock rod 2 to swing upwards through the upward swinging handle 31, the hook part 21 of the lock rod 2 can be stably clamped in the clamping groove, and the safety and the reliability of connection of the end wall 10 and the side wall 11 are greatly ensured. That is, when the end wall 10 and the side wall 11 need to be unlocked, the unlocking can be realized through the following two steps in sequence: 1. the safety limiting device 4 is opened, and the handle 31 is swung upwards to be separated from the notch 13; 2. the handle 31 is pushed forward to make the groove 32 and the protrusion 22 engaged, and then the handle 31 is swung downward to release the hook 21 from the engaging groove. Therefore, the unlocking device has a double protection structure during unlocking, and can realize unlocking only through two operations, so that the reliability and the safety of the operation are greatly improved.

As shown in fig. 4, the safety limiting device 4 includes a limiting block 41, a control rod 42 and an elastic member 43, the limiting block 41 is swingably mounted on the lower portion of the support 1, in a normal state, the elastic member 43 applies an elastic force to the limiting block 41 to press the limiting block 41 to swing toward the notch 13, and the limiting block 41 closes the notch 13; the control rod 42 is fixedly connected with the stopper 41 to control the stopper 41 to open the notch 13 against the elastic force of the elastic member 43.

Under the normal state, the limiting block 41 closes the notch 13 under the elastic force action of the elastic member 43, so that the handle 31 sleeved in the notch 13 is limited and cannot swing upwards to be separated, and the handle 31 is prevented from being separated easily under the action of external force to drive the lock rod 2 to swing. When the handle 31 needs to be swung upwards to be separated from the notch 13, the control rod 42 only needs to be swung, the limiting block 41 overcomes the elasticity of the elastic piece 43 to open the notch 13, and at the moment, the handle 31 can be swung upwards to be separated from the notch 13.

The bottom of the support 1 is provided with a guide rod 15, the elastic part 43 is arranged on the guide rod 15, and two ends of the elastic part 43 respectively press the support 1 and the limiting block 41. Under the guiding action of the guide rod 15, the elastic member 43 can stably press the limiting block 41, and the limiting block 41 can be ensured to stably close the notch 13 under the normal state.

The tail end of the lock rod 2 is provided with a pin 23, after the sleeve 3 slides backwards and the bulge 22 is separated from the groove 32, the tail end of the sleeve 3 presses the pin 23 to drive the lock rod 2 to slide backwards, and the hook part 21 is accommodated in the through hole 12. After the hook 21 is released from the slot, in order to prevent the hook 21 from being exposed and scratching workers, the tail end of the sleeve 3 presses the pin 23 to drive the lock rod 2 to slide backwards, so that the hook 21 can be accommodated in the through hole 12.

The limiting block 41 is rotatably mounted on the support 1 through a rotating shaft, that is, the limiting block 41 is hinged on the support 1.

The elastic member 43 is a spring. Of course, the elastic member 43 may be a torsion spring.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.

Claims

1. A safety lock is characterized by comprising a support, a lock rod, a sleeve and a safety limiting device, wherein the support, the lock rod, the sleeve and the safety limiting device are arranged on the end wall of a metal box; the lock rod is slidably and rotatably arranged on the support, and the front end of the lock rod is provided with a hook part which is clamped in the clamping groove or is accommodated in the through hole; the sleeve is slidably and rotatably sleeved on the lock rod, and a handle is fixedly arranged on the sleeve; the front end of the lock rod is provided with a bulge, and the front end of the sleeve is provided with a groove; the lower part of the support is provided with a notch for placing a handle, and the safety limiting device is arranged at the notch to limit the handle to swing outwards; before the end wall and the side wall are locked, the sleeve slides forwards and rotates to clamp the protrusion into the groove, the sleeve pushes the hook part of the lock rod out of the through hole and drives the hook part to rotate and hook the clamping groove to form a locking structure; the sleeve slides backwards to separate the protrusion from the groove, the handle is rotated into the notch, and the safety limiting device closes the notch to limit the handle in the notch to form a limiting structure.

2. The safety lock according to claim 1, wherein the safety limiting device comprises a limiting block, a control rod and an elastic member, the limiting block is swingably mounted at the lower part of the support, in a normal state, the elastic member applies elasticity to the limiting block to press the limiting block to swing towards the notch, and the limiting block closes the notch; the control rod is fixedly connected with the limiting block to control the limiting block to overcome the elasticity of the elastic piece to open the notch.

3. The safety lock according to claim 2, wherein a guide rod is disposed at the bottom of the support, the elastic member is disposed on the guide rod, and two ends of the elastic member respectively press against the support and the limiting block.

4. The safety lock according to claim 1, wherein the locking rod has a pin at the end, and when the sleeve slides backward to remove the protrusion from the groove, the pin is pressed by the end of the sleeve to drive the locking rod to slide backward, and the hook is received in the through hole.

5. The security lock of claim 2, wherein the stop block is rotatably mounted to the support via a shaft.

6. A security lock as claimed in claim 2 or claim 3, wherein the resilient member is a spring.