CN111852195A

CN111852195A - Spring type lock catch and terminal box

Info

Publication number: CN111852195A
Application number: CN202010680157.9A
Authority: CN
Inventors: 龚演平
Original assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2020-10-30

Abstract

The invention belongs to the technical field of locks and discloses a spring type lock catch and a terminal box, wherein the spring type lock catch is used for locking a first part and a second part and comprises a hook piece, a base and a rotating piece, the hook piece is connected to the first part, a clamping groove is formed in the hook piece, the base is connected to the second part, the rotating piece comprises a flip cover, a clamping rod and an elastic piece, the flip cover is rotatably connected to the base and can rotate around a rotating shaft on the flip cover towards the hook piece, one end of the elastic piece is rotatably connected to a first position of the flip cover, the other end of the elastic piece is connected to the clamping rod, in a locking state, the clamping rod is clamped in the clamping groove, the flip cover is attached to the base, the distance between the first position and the second part is smaller than the distance between the rotating shaft and the second part, the elastic piece is in a stretching state, and the spring type lock catch. The terminal box comprises a box body, a box door and a plurality of spring type lock catches, the box door can be firmly locked, and the terminal box is prevented from automatically bouncing off under the action of wind force.

Description

Spring type lock catch and terminal box

Technical Field

The invention belongs to the technical field of locks, and particularly relates to a spring type lock catch and a terminal box.

Background

The transformer substation terminal box plays a role in connecting primary equipment and secondary equipment, and elements in the terminal box mainly comprise an operating handle, a conversion handle, an indicator light, an air switch, a relay, a heater, a related secondary terminal row and the like. Because the outdoor terminal box is in a severe outdoor environment for a long time, the outdoor terminal box is damaged by weather such as rainwater, strong wind, sunshine and the like in the environment, and the terminal box and elements in the box are greatly influenced. When water enters the terminal box and is affected by tide, internal components can be rusted, the insulation resistance of the direct current secondary circuit to the ground is reduced, even direct current grounding can be caused, the protection switch is mistakenly operated or refused, and the safe operation of a power grid is seriously threatened. Therefore, it is important to make a sealing measure for the outdoor terminal box.

The latches currently in use are typically simple latches without a spring design. The lock catch is not provided with a spring and a self-pressing function, so that the lock catch can be easily and automatically bounced off in the using process, particularly in the weather of typhoon, storm and the like, the box door of the terminal box is easily and automatically opened, and the functions of sealing and protecting internal electric equipment cannot be achieved.

Therefore, a spring-type latch and a terminal box are needed to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a spring type lock catch which has a self-pressing function and can prevent the lock catch from automatically bouncing off under the action of wind force, so that the locking firmness is ensured.

In order to achieve the purpose, the invention adopts the following technical scheme:

a spring loaded latch for latching a first member to a second member, comprising:

the clamping hook piece is connected to the first part, and a clamping groove is formed in the clamping hook piece;

a base connected to the second member;

rotate the piece, including flip, kelly and elastic component, flip rotate connect in the base, flip can be round pivot orientation above that the trip piece rotates, the one end of elastic component rotate connect in flip's primary importance, the other end connect in the kelly, under the closure state, the kelly joint in the draw-in groove, flip laminating in the base, primary importance apart from the interval of second part is less than the pivot is apart from the interval of second part, just the elastic component is in tensile state.

Preferably, the number of the elastic members is two, and the two elastic members are respectively located at two sides of the flip.

Preferably, the elastic member includes a first connecting piece, a second connecting piece and a spring, one end of the spring is connected to the first position of the flip through the first connecting piece, and the other end of the spring is connected to the clamping rod through the second connecting piece.

As preferred, first connection piece includes first lamellar body and first dop, the one end of first lamellar body rotate connect in flip, the other end connect in first dop, the width of first dop is greater than the width of first lamellar body, the second is even the piece includes second lamellar body and second dop, the one end of second lamellar body connect in the kelly, the other end connect in the second dop, the width of second dop is greater than the width of second lamellar body, the spring overlaps simultaneously and locates first lamellar body with on the second lamellar body, and the joint in first dop with between the second dop.

Preferably, the base includes the bottom plate and connect in lock ear on the bottom plate, the bottom plate connect in the second part, flip rotate connect in the bottom plate, the lockhole has been seted up on the lock ear, the bar through-hole has been seted up on flip, the lock ear can wear to locate the bar through-hole, so that the lockhole with the bottom plate is located respectively flip's both sides, the lockhole is used for hanging and establishes five locks.

Preferably, the base further comprises a first connecting portion arranged at one end of the bottom plate, the flip cover comprises a turning plate and a second connecting portion arranged at one end of the turning plate, the strip-shaped through hole is formed in the turning plate, and the first connecting portion is rotatably connected to the second connecting portion.

Preferably, the flip cover further comprises a handle portion, and the handle portion is arranged at one end of the turning plate, which deviates from the second connecting portion.

Preferably, the handle portion is an arc-shaped structure, and the arc-shaped structure is bent towards a side away from the bottom plate.

Preferably, the hook member is a plate-shaped structure, and one end of the plate-shaped structure, which is close to the base, is bent to form the clamping groove.

Another object of the present invention is to provide a terminal box having a self-tightening function, which can firmly lock a box door, and prevent the box door from automatically bouncing off due to wind, so as to ensure the sealing performance of the terminal box and better protect internal power equipment.

a terminal box comprises a box body, a box door and a plurality of spring type lock catches.

The invention has the beneficial effects that:

According to the spring type lock catch provided by the invention, when the flip cover is rotated to be close to the hook piece, the clamping rod can be clamped in the clamping groove of the hook piece, in the process of rotating the flip cover towards the direction departing from the hook piece, the distance from the first position to the hook piece is gradually increased, the elastic piece can be stretched, when the flip cover is rotated to be attached to the base, the locking state is reached, at the moment, the elastic piece is in the stretching state, both the flip cover and the hook piece have tensioning force, because the distance from the first position to the second part is smaller than the distance from the rotating shaft to the second part, and the straight line where the pulling force of the elastic piece to the flip cover is located is positioned between the rotating shaft and the second part, the elastic piece exerts the force for extruding the base on the flip cover, so that the flip cover is in the self-pressing state, and cannot be separated from the base under the action of wind power, and the firm. The spring type lock catch provided by the invention has a self-pressing function, and can prevent the lock catch from automatically bouncing off under the action of wind force, so that the locking firmness is ensured.

The terminal box provided by the invention comprises the plurality of spring type latches, the edge of the box door can be prevented from tilting, a sealing effect is achieved, the spring type latches have a self-pressing function, the box door can be firmly locked, and the box door is prevented from being automatically bounced off under the action of wind force, so that the sealing performance of the terminal box can be ensured, and the effect of protecting internal power equipment is better achieved.

Drawings

Fig. 1 is a schematic structural view of a spring type buckle according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a partial spring type lock catch according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a first connecting piece according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a flip cover according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a base according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a terminal box according to a second embodiment of the present invention.

In the figure:

10. a box body; 20. a box door;

1. a hook member; 2. a base;

11. a card slot; 21. a base plate; 22. locking lugs; 23. a first connection portion; 31. a cover is turned; 32. a clamping rod; 33. an elastic member; 34. a first link; 35. a second link;

221. a lock hole; 231. a second connection hole; 311. turning over a plate; 312. a second connecting portion; 313. a handle portion; 331. a first connecting piece; 332. a second connecting piece; 333. a spring;

3111. a strip-shaped through hole; 3121. a first connection hole; 3311. a first chuck; 3312. the first sheet body.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "mounted" are to be construed broadly, e.g., as meaning both connected and disconnectable, mechanically and electrically, directly or indirectly via intermediate media, whether internal or external to the elements, or in any other relationship between the elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example one

As shown in fig. 1, the present embodiment provides a spring type lock catch for locking a first component and a second component, which includes a hook member 1, a base 2 and a rotating member, wherein the hook member 1 is connected to the first component, and a slot 11 is formed in the hook member 1; the base 2 is connected to the second member; the rotating part comprises a flip 31, a clamping rod 32 and an elastic part 33, the flip 31 is rotatably connected to the base 2, the flip 31 can rotate towards the clamping hook part 1 around a rotating shaft on the flip 31, one end of the elastic part 33 is rotatably connected to a first position of the flip 31, the other end of the elastic part is connected to the clamping rod 32, the clamping rod 32 is clamped in the clamping groove 11 in a locking state, the flip 31 is attached to the base 2, the distance between the first position and the second part is smaller than the distance between the rotating shaft and the second part, and the elastic part 33 is in a stretching state.

The spring-type lock catch provided by the embodiment can lock the lock rod 32 in the lock slot 11 of the hook member 1 when the flip cover 31 is rotated to be close to the hook member 1, in the process of rotating the flip cover 31 in the direction away from the hook member 1, the distance from the first position to the hook member 1 gradually increases, the elastic member 33 is stretched, when the flip cover 31 is rotated to be attached to the base 2, the locking state is achieved, and at this time, the elastic member 33 is in the stretching state, the flip 31 and the hook member 1 are tensioned, because the distance between the first position and the second part is smaller than the distance between the rotating shaft and the second part, the straight line of the tension of the elastic member 33 to the flip 31 is positioned between the rotating shaft and the second part, therefore, the elastic element 33 applies a force to the flip 31 to press the base 2, so that the flip 31 reaches a self-pressing state, when the wind power acts on the base, the base 2 can not be separated, so that the effect of firm locking is achieved. The spring type lock catch provided by the embodiment has a self-pressing function, and can prevent the lock catch from automatically bouncing off under the action of wind force, so that the firmness of locking is ensured.

Alternatively, two elastic members 33 are provided, and the two elastic members 33 are respectively located at both sides of the folder 31. As shown in fig. 1, one end of each of the two elastic members 33 is rotatably connected to two sides of the flip cover 31 through the second connecting rod 35, and the other end of each of the two elastic members 33 is respectively connected to two ends of the clamping rod 32, so that the two elastic members 33 can ensure the connection stability of the clamping rod 32, increase the elastic force during self-compression, and ensure the firmness of locking.

As shown in fig. 1 and 2, the elastic member 33 includes a first link 331, a second link 332, and a spring 333, one end of the spring 333 is connected to the first position of the lid 31 through the first link 331, and the other end is connected to the catch lever 32 through the second link 332. Alternatively, the first link 331 may be connected to an end of the spring 333 near the lid 31, and the second link 332 is connected to an end of the spring 333 near the latch 32. In this embodiment, the first connecting piece 331 and the second connecting piece 332 penetrate through the spring 333, the first connecting piece 331 is clamped at one end of the spring 333 away from the flip 31, and the second connecting piece 332 is clamped at one end of the spring 333 away from the clamping rod 32, so that the connection between the first connecting piece 331 and the second connecting piece 332 is firmer.

As shown in fig. 2 and 3, the first connecting piece 331 includes a first piece 3312 and a first chuck 3311, one end of the first piece 3312 is rotatably connected to the flip cap 31, the other end is connected to the first chuck 3311, the width of the first chuck 3311 is greater than that of the first piece 3312, the second connecting piece 332 includes a second piece and a second chuck, one end of the second piece is connected to the clamping rod 32, the other end is connected to the second chuck, the width of the second chuck is greater than that of the second piece, and the spring 333 is sleeved on the first piece 3312 and the second piece and clamped between the first chuck 3311 and the second chuck. The first plate 3312 and the second plate are overlapped with each other at the inner part of the spring 333, and the first chuck 3311 is clamped at the end of the spring 333 departing from the flip 31, and the second chuck is clamped at the end of the spring 333 departing from the clamping rod 32. So that the first and

second chucks

3311 and 333 approach each other and press the spring 333 when the elastic member 33 is stretched, the spring 333 has an elastic force to restore its original shape, thereby bringing the flip 31 into a self-pressing state.

Specifically, the base 2 includes the bottom plate 21 and connects the lock ear 22 on the bottom plate 21, the bottom plate 21 is connected in the second part, the flip 31 rotates to be connected in the bottom plate 21, the lock hole 221 has been seted up on the lock ear 22, the bar through-hole 3111 has been seted up on the flip 31, the lock ear 22 can wear to locate the bar through-hole 3111 to make the lock hole 221 and the bottom plate 21 be located the both sides of flip 31 respectively, the lock hole 221 is used for hanging and establishes five locks. The locking lug 22 is provided to further lock the flip cover 31, preventing non-working personnel from opening the lock by themselves.

As shown in fig. 1, 4 and 5, the base 2 further includes a first connecting portion 23 disposed at one end of the bottom plate 21, the flip 31 includes a turning plate 311 and a second connecting portion 312 disposed at one end of the turning plate 311, the strip through hole 3111 is opened on the turning plate 311, and the first connecting portion 23 is rotatably connected to the second connecting portion 312. In this embodiment, the second connection portion 312 has a first connection hole 3121, the first connection portion 23 has a second connection hole 231, and the first link 34 is simultaneously inserted into the first connection hole 3121 and the second connection hole 231 to rotatably connect the first connection portion 23 to the second connection portion 312.

Specifically, the flip cover 31 further includes a handle portion 313, and the handle portion 313 is disposed at an end of the flap 311 away from the second connecting portion 312. The handle portion 313 is used to flip the lid 31 when unlocked.

Alternatively, the handle portion 313 is an arc-shaped structure that curves toward the side away from the bottom plate 21. The arc structure makes the handle 313 spaced from the bottom plate 21 when the flap 311 is attached to the bottom plate 21, so that the flap 311 can be turned over by holding the handle 313.

Optionally, the hook member 1 is a plate-shaped structure, and one end of the plate-shaped structure close to the base 2 is bent to form the slot 11. In this embodiment, the one end of base 2 is buckled and is enclosed into the semicircle, and the length of draw-in groove 11 is longer for the joint of draw-in groove 11 and kelly 32 is more stable.

Example two

Fig. 6 shows a second embodiment, wherein the same or corresponding parts as in the first embodiment are provided with the same reference numerals as in the first embodiment. For the sake of simplicity, only the differences between the second embodiment and the first embodiment will be described, the differences being: the present embodiment provides a terminal box, which includes a box body 10 and a box door 20, and further includes a plurality of spring latches provided in the first embodiment. A plurality of spring hasp distribute in the different positions department at chamber door 20 edge, can avoid the marginal perk of chamber door 20, play better sealed effect, and this spring hasp has from the compression function, can firmly lock chamber door 20, prevent owing to receive the automatic spring of the effect of wind power to open to can ensure the leakproofness of terminal box, better play the effect of protecting inside power equipment.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A spring loaded latch for latching a first member to a second member, comprising:

the clamping hook piece (1) is connected to the first part, and a clamping groove (11) is formed in the clamping hook piece (1);

a base (2) connected to the second part;

the rotation piece, including flip (31), kelly (32) and elastic component (33), flip (31) rotate connect in base (2), flip (31) can be around the pivot orientation on it trip piece (1) rotates, the one end of elastic component (33) rotate connect in the primary importance of flip (31), the other end connect in kelly (32), under the closure state, kelly (32) joint in draw-in groove (11), flip (31) laminate in base (2), primary importance apart from the interval of second part is less than the pivot distance the interval of second part, just elastic component (33) are in tensile state.

2. A spring catch according to claim 1, characterized in that two resilient members (33) are provided, the two resilient members (33) being located on either side of the flip-top lid (31).

3. A spring latch as claimed in claim 1, characterized in that the resilient member (33) comprises a first web (331), a second web (332) and a spring (333), one end of the spring (333) being connected to the first position of the flip (31) via the first web (331) and the other end being connected to the catch lever (32) via the second web (332).

4. A spring loaded latch as claimed in claim 3, wherein the first connecting piece (331) comprises a first piece (3312) and a first clamping head (3311), one end of the first piece (3312) is rotatably connected to the flip cover (31), the other end is connected to the first clamping head (3311), the width of the first clamping head (3311) is greater than the width of the first piece (3312), the second connecting piece (332) comprises a second piece and a second clamping head, one end of the second piece is connected to the clamping bar (32), the other end is connected to the second clamping head, the width of the second clamping head is greater than the width of the second piece, the spring (333) is sleeved on the first piece (3312) and the second piece, and is clamped between the first clamping head (3311) and the second clamping head.

5. A spring type lock catch according to claim 1, wherein the base (2) comprises a bottom plate (21) and a lock lug (22) connected to the bottom plate (21), the bottom plate (21) is connected to the second component, the flip cover (31) is rotatably connected to the bottom plate (21), a lock hole (221) is formed in the lock lug (22), a bar-shaped through hole (3111) is formed in the flip cover (31), the lock lug (22) can penetrate through the bar-shaped through hole (3111) so that the lock hole (221) and the bottom plate (21) are respectively located at two sides of the flip cover (31), and the lock hole (221) is used for hanging five-prevention locks.

6. A spring catch according to claim 5, characterised in that the base (2) further comprises a first connection (23) arranged at one end of the bottom plate (21), the flap (31) comprises a flap (311) and a second connection (312) arranged at one end of the flap (311), the strip-shaped through hole (3111) is open at the flap (311), and the first connection (23) is rotatably connected to the second connection (312).

7. A spring catch according to claim 6, characterised in that the flap (31) further comprises a handle portion (313), which handle portion (313) is arranged at an end of the flap (311) facing away from the second connecting portion (312).

8. A spring catch according to claim 7, characterised in that the handle portion (313) is of arcuate configuration, curved towards the side facing away from the base plate (21).

9. A spring type lock catch according to any one of claims 1-8, characterised in that the hook member (1) is a plate-like structure, one end of which, close to the base (2), is bent to form the catch groove (11).

10. A terminal box comprising a box body (10) and a door (20), characterized by further comprising a plurality of spring-loaded latches as claimed in any one of claims 1 to 9.