CN210490238U - Three-position locking device - Google Patents

Abstract

The utility model provides a three-position locking device, including housing and drive mechanism, drive mechanism locates in the housing, drive mechanism includes fixed plate, cardboard, slide, indicator lever, transmission shaft and limiting plate, the fixed plate is located the cardboard with between the slide, the one end of indicator lever, transmission shaft and limiting plate is passed in proper order the slide, the other end passes in proper order the fixed plate, the fixed plate with housing fixed connection. The utility model discloses with the three-position locking device modularization, the automatic installation of being convenient for improves assembly efficiency.

Description

Three-position locking device

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to three-position locking device of pull-out type circuit breaker.

Background

The drawout breaker can display three states of connection, test and separation according to different positions of the breaker body in the drawer seat. In order to reliably position the circuit breaker body when the circuit breaker body is drawn out and pushed into the drawer seat and avoid misoperation, the existing draw-out circuit breaker is provided with locking devices in three position states. However, in the existing three-position locking device, all parts are installed on the basis of the base plate, and all the parts are assembled on the base plate one by one, so that the assembling process is complicated, and the realization of automatic assembly is not facilitated, so that a modularized three-position locking device is urgently needed to solve the existing problems.

Disclosure of Invention

The utility model aims at providing a three-position locking modularization device of pull-out type circuit breaker, integrated for a module with three-position locking device, the automatic installation of being convenient for improves the installation effectiveness.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a three-position locking device, includes housing and drive mechanism, drive mechanism locates in the housing, drive mechanism includes fixed plate, cardboard, slide, indicator lever, transmission shaft and limiting plate, the fixed plate is located the cardboard with between the slide, the one end of indicator lever, transmission shaft and limiting plate is passed in proper order the slide, the other end pass in proper order the fixed plate, the fixed plate with housing fixed connection.

Preferably, a third bending portion and a fourth bending portion are arranged on two sides of the fixing plate respectively, and the third bending portion and the fourth bending portion are fixed to the housing respectively.

Preferably, one end of the clamping plate is provided with a fifth bending part, and a first elastic part is arranged between the fifth bending part and the housing.

Preferably, the other end of the clamping plate is provided with an inserting block.

Preferably, one end of the limiting plate is fixedly connected with the sliding plate, a plurality of limiting holes are formed in the limiting plate, and the inserting block can be inserted into the limiting holes.

Preferably, the bottom of the limiting plate is also provided with a plurality of arc-shaped grooves.

Preferably, the three-position locking device further comprises an unlocking assembly, wherein the unlocking assembly comprises a locking piece, a connecting rod and an unlocking piece, and the connecting rod is arranged between the locking piece and the unlocking piece and is respectively movably connected with the locking piece and the unlocking piece.

Preferably, one end of the locking element is provided with a sixth bending part.

Preferably, the bottom of the clamping plate is provided with a first step and a second step, and the sixth bending part can be in contact with or separated from the first step or the second step.

Preferably, the clamping plate is provided with a first through hole, a second lug is arranged in the first through hole, the transmission shaft is provided with a first groove, and the second lug can be inserted into the first groove.

Preferably, one end of the transmission shaft is rotatably connected with the sliding plate.

Preferably, one end of the indicating rod is provided with a helical blade, and the helical blade is rotatably connected with the sliding plate.

Preferably, a first through groove matched with the helical blade is arranged in the sliding plate.

Preferably, a convex connecting column is further arranged on the fixing plate, the unlocking assembly further comprises a second elastic piece, one end of the second elastic piece is arranged on the connecting column, and the other end of the second elastic piece is arranged on the locking piece.

Preferably, the unlocking member is provided with a second through groove, the second through groove comprises an inclined plane, and one end of the connecting rod can be inserted into the second through groove and can be contacted with or separated from the inclined plane.

The utility model has the advantages that:

the utility model discloses connect each part of dispersion among the three-position locking device, realize three-position locking device's modularization to at the in-process of automatic assembly, can directly snatch the assembly with modular three-position locking device can, avoided single component to assemble one by one, improve assembly and supply of material efficiency, and effectively overcome the problem that the automatic assembly system structure is complicated that the assembly leads to one by one, effectively reduced manufacturing cost.

Drawings

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

Fig. 1 is a schematic view of an assembly structure of a three-position locking device according to the present invention.

Fig. 2 is a schematic view of the housing structure of the present invention.

Fig. 3 is a schematic view of another angle assembly structure of the three-position locking device of the present invention.

Fig. 4 is a schematic view of the overall structure of a three-position locking device according to the present invention.

Fig. 5 is an exploded view of the three-position locking device of the present invention.

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.

The terms of orientation of the present invention such as "upper", "lower", "left", "right", "height", "bottom", etc. are based on the position shown in fig. 4.

As shown in fig. 1 to 5, the utility model provides a three-position locking modular device, including housing 1 and drive mechanism, drive mechanism locates in the housing 1, drive mechanism includes fixed plate 2, cardboard 3, slide 4, indicator lever 5, transmission shaft 6 and limiting plate 7, the one end of indicator lever 5, transmission shaft 6 and limiting plate 7 all with slide 4 is connected, and the other end passes respectively fixed plate 2 just follows fixed plate 2 arranges in proper order.

The housing 1 comprises a top cover 101, a first bending portion 102 and a second bending portion 103 are arranged on two sides of the top cover 101, a positioning hole 104 and a limiting hole 105 are arranged on the top cover 101, the positioning hole 104 is matched with the fixing plate 2, and the limiting hole 105 is matched with the sliding plate 4. Preferably, the first bending portion 102 and the second bending portion 103 are respectively provided with a first flange 106 and a second flange 107, the first flange 106 and the second flange 107 are fixedly connected with the bottom plate 100 of the drawer base through screws, when the transmission device is assembled with the casing 1, the first bending portion 102 and the second bending portion 103 are clamped into the bottom plate 100 of the drawer base, and then the first flange 106 and the second flange 107 are fixed with the bottom plate 100 through screws, so that the three-position locking device is installed.

The both sides of fixed plate 2 are equipped with third bending 201 and fourth bending 202 respectively, third bending 201 and fourth bending 202 respectively through the screw with housing 1 is fixed mutually, thereby realizes fixed plate 2 with housing 1's is fixed. One side of the fixing plate 2 is provided with a U-shaped groove 203 with an upward opening, the indicating rod 5 can pass through the U-shaped groove 203, the top of the fixing plate 2 is further provided with a first protrusion 204, and the protrusion 204 is clamped in the positioning hole 101 of the housing 1, so that the fixing of the fixing plate 2 and the housing 1 is completed.

The clamping plate 3 is provided with a first through hole 301, a second through hole 302 and a third through hole 303 which are long-waist-shaped integrally, the first through hole 301 can accommodate the transmission shaft 6 to pass through, the clamping plate 3 is connected with the fixing plate 2 through a first connecting shaft 304 and a second connecting shaft 305, one ends of the first connecting shaft 304 and the second connecting shaft 305 are fixedly arranged on the fixing plate 2, and the other ends of the first connecting shaft 304 and the second connecting shaft 305 extend into the second through hole 302 and the third through hole 303 respectively and can respectively move along the second through hole 302 and the third through hole 303 in a reciprocating linear mode. A fifth bending portion 306 is further disposed on one side of the clamping plate 3, an insertion block 308 is further disposed at one end of the clamping plate 3, the fifth bending portion 306 and the housing 1 are fixed by screws, a first elastic member 307 is further disposed between the fifth bending portion 306 and the housing 1, one end of the first elastic member 307 abuts against the fifth bending portion 306, and the other end of the first elastic member 307 abuts against the housing 1, preferably, the first elastic member 307 is a spring.

Be equipped with the protruding 401 of second on slide 4, the protruding 401 of second can stretch into in the spacing hole 105 on the housing 1, and can be in be reciprocal linear motion in the spacing hole 105, slide 4's one end respectively with the one end of indicator lever 5, transmission shaft 6 and limiting plate 7 is connected be equipped with on slide 4 with the first logical groove 402 of helical blade 501 matched with on the indicator lever 5 can with the rotation of indicator lever 5 turns into slide 4's linear motion.

One end of the indicating rod 5 is provided with a helical blade 501, and the other end of the indicating rod passes through the fixing plate 2 and the clamping plate 3 in sequence. Specifically, the spiral blade 501 extends into the sliding plate 4 and can be engaged with or separated from the first through groove 402, when the sliding plate 4 moves linearly, the first through groove 402 can drive the spiral blade 501 to rotate, so that the linear motion of the sliding plate 4 can be converted into the rotation of the indication rod 5, and similarly, when the user rotates the indication rod 5 externally, the rotation of the indication rod 5 can be converted into the linear motion of the sliding plate 4 through the engagement of the spiral blade 501 and the first through groove 402. The other end of the indication rod 5 penetrates through the U-shaped groove 203 in the fixed plate 2, a stop block 502 is arranged on the indication rod 5, the stop block 502 corresponds to the U-shaped groove 203 and abuts against two side faces of the fixed plate 2, so that the indication rod 5 is limited, and the indication rod 5 is prevented from moving along the length direction of the indication rod.

One end of the transmission shaft 6 is rotatably connected with the sliding plate 4, the other end of the transmission shaft sequentially penetrates through the fixed plate 2 and the clamping plate 3, specifically, one end of the transmission shaft 6 penetrates through the fixed plate 2 and then is fixed through a nut, threads are arranged at the matching positions of the fixed plate 2 and the transmission shaft 6, and when the transmission shaft 6 rotates, the rotation of the transmission shaft 6 can be converted into linear motion of the sliding plate 4 through the threads. The transmission shaft 6 is provided with a plurality of first protrusions 601, a first groove 602 is formed between adjacent first protrusions 601, the first protrusions 601 can pass through the first through holes 301 on the clamping plate 3 and can move left and right in the first through holes 301, a second protrusion 309 is arranged in the first through holes 301, and the second protrusion 309 can be in contact with or separated from the first groove 602.

One end of the limiting plate 7 is fixedly connected with the sliding plate 4, the other end of the limiting plate passes through the fixing plate 2, the limiting plate 7 can move linearly under the driving of the sliding plate 4, a plurality of limiting holes 701 and arc-shaped grooves 702 are formed in the limiting plate 7, when the limiting plate 7 moves linearly under the driving of the sliding plate 4, the inserting blocks 308 on the clamping plate 3 can be inserted into the limiting holes 701, and the arc-shaped grooves 702 are formed in the bottom of the limiting plate 7.

Preferably, the three-position lock device further comprises an unlocking assembly, the unlocking assembly comprises a locking piece 8, a connecting rod 12 and an unlocking piece 11, the locking piece 8 is arranged on the fixing plate 2 and between the clamping plates 3, a locking shaft 9 is fixedly arranged at one end of the locking piece 8 through riveting, a sixth bending part 802 is arranged at the other end of the locking piece 8, the locking shaft 9 can be in contact with an arc-shaped groove 702 at the bottom of the limiting plate 7, the diameter of the arc-shaped groove 702 is larger than that of the locking shaft 9, a fourth through hole 801 is further arranged on the locking piece 8, the fourth through hole 801 is long waist-shaped, one end of the first connecting shaft 304 can sequentially penetrate through the fourth through hole 801 and locate the second through hole 302 on the clamping plate 3, and the fourth through hole 801 and the length direction of the second through hole 302 are perpendicular to each other.

The bottom of the card board 3 is further provided with a first step 310 and a second step 311, the second step 311 is higher than the first step 310, and the sixth bending portion 802 can be in contact with or separated from the first step 310 or the second step 311.

Still be equipped with convex spliced pole 205 on the fixed plate 2 with still be equipped with second elastic component 10 between the cardboard 3, the one end of second elastic component 10 is located on the spliced pole 205, and the other end is located on the hasp piece 8, the preferred, second elastic component 10 is a extension spring.

One end of the connecting rod 12 passes through the clamping plate 3 to be connected with the fourth through hole 801 on the locking part 8 and can move linearly in the fourth through hole 801, the other end of the connecting rod 12 is connected with the unlocking part 11, the unlocking part 11 is provided with a second through groove 110, the second through groove 110 comprises an inclined surface 110a, and the other end of the connecting rod 12 can be inserted into the second through groove 110 and can be contacted with or separated from the inclined surface 110 a. Still be equipped with third elastic component 111 on the unlocking piece 11, third elastic component 111 a pot head is established on unlocking piece 11, the other end low pressure is in on the lateral wall of bottom plate 100, for unlocking piece 11 provides the power that resets.

The utility model discloses a theory of operation is: when the position state of the circuit breaker body needs to be changed, the unlocking piece 11 is pressed first, the unlocking piece 11 moves towards the direction close to the fixing plate 2, at this time, the third elastic piece 111 and the first elastic piece 307 are in a compressed state, under the pushing action of the inclined plane 110a of the second through groove 110, the connecting rod 12 moves towards the direction close to the indicating rod 5, namely, moves towards the left, under the driving of the connecting rod 12, the clamping plate 3 and the connecting rod 12 move synchronously, namely, the clamping plate 3 moves towards the direction far away from the limiting plate 7, the insertion block 308 on the clamping plate 3 is separated from the limiting hole 701 on the limiting plate 7, meanwhile, the sixth bending part 802 is separated from the first step 310, under the pulling force of the second elastic piece 10, the locking piece 8 drives the locking shaft 9 to move upwards together until the sixth bending part 802 is contacted with the second step 311, the unlocking assembly completes unlocking at the moment.

After the unlocking assembly finishes unlocking, the transmission shaft 6 is driven to rotate through the operating handle, the transmission shaft 6 drives the sliding plate 4 to do linear motion, the sliding plate 4 drives the limiting plate 7 to do synchronous linear motion and drives the indicating rod 5 to rotate, when the limiting plate 7 does linear motion, the arc-shaped groove 702 on the limiting plate 7 extrudes the locking shaft 9 to enable the locking shaft 9 to move downwards, the locking shaft 9 drives the locking piece 8 to do synchronous downward motion, at the moment, the sixth bending part 802 on the locking piece 8 is separated from the second step 311, the elasticity of the first elastic piece 307 is released, the clamping plate 3 moves rightwards under the action of the first elastic piece 307 until the insertion block 308 is contacted with the side face of the limiting plate 7, and then in the linear motion process of the limiting plate 7, the insertion block 308 is always kept in the state that the side face of the limiting plate 7 is contacted, when the limiting plate 7 moves to the position where the insertion block 308 corresponds to the limiting hole 701 in the limiting plate 7, the clamping plate 3 is under the action of the first elastic part 307, so that the insertion block 308 is inserted into the limiting hole 701, the first step 310 at the bottom of the clamping plate 3 is in contact with the sixth bending part 802 of the locking part 8, the sixth bending part 802 cannot move rightwards continuously, but keeps the position at the moment, the second protrusion 309 on the clamping plate 3 is clamped into the first groove 602 of the transmission shaft 6, the transmission shaft 6 cannot rotate continuously, the purpose of locking the position of the breaker body is achieved, and at the moment, the indicating rod 5 stays at the indicating position of the corresponding state of the breaker body.

The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent.

Claims (10)

1. The utility model provides a three-position locking device, includes housing (1) and drive mechanism, drive mechanism locates in housing (1), its characterized in that, drive mechanism includes fixed plate (2), cardboard (3), slide (4), indicator lever (5), transmission shaft (6) and limiting plate (7), fixed plate (2) are located cardboard (3) with between slide (4), the one end of indicator lever (5), transmission shaft (6) and limiting plate (7) is passed in proper order slide (4), the other end passes in proper order fixed plate (2), fixed plate (2) with housing (1) fixed connection.

2. A three-position locking device according to claim 1, characterized in that a third bend (201) and a fourth bend (202) are provided on each side of the fastening plate (2), said third bend (201) and fourth bend (202) being secured to the housing (1).

3. A three-position locking device according to claim 1 or 2, wherein one end of the catch plate (3) is provided with a fifth bend (306), and a first resilient member (307) is provided between the fifth bend (306) and the housing (1).

4. A three-position locking arrangement according to claim 3, characterized in that the other end of the catch plate (3) is provided with an insert (308).

5. A three-position locking device according to claim 4, wherein one end of the limiting plate (7) is fixedly connected with the sliding plate (4), a plurality of limiting holes (701) are arranged on the limiting plate (7), and the inserting block (308) can be inserted into the limiting holes (701).

6. A three-position locking device according to claim 5, characterized in that the bottom of the retainer plate (7) is provided with several curved grooves (702).

7. The device of claim 1 or 6, further comprising an unlocking assembly, wherein the unlocking assembly comprises a locking member (8), a connecting rod (12) and an unlocking member (11), and the connecting rod (12) is disposed between the locking member (8) and the unlocking member (11) and is movably connected with the locking member (8) and the unlocking member (11), respectively.

8. A three-position locking device according to claim 7, characterized in that the locking catch element (8) is provided at one end with a sixth fold (802).

9. A three-position locking device according to claim 8, wherein a first step (310) and a second step (311) are provided on the bottom of the catch plate (3), and the sixth bent portion (802) is capable of contacting with or separating from the first step (310) or the second step (311).

10. A three-position locking device according to claim 1, wherein said catch plate (3) is provided with a first through hole (301), a second protrusion (309) is provided in said first through hole (301), said transmission shaft (6) is provided with a first recess (602), and said second protrusion (309) is insertable into said first recess (602).

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