CN219163244U - Power distribution cabinet and operating handle assembly thereof - Google Patents

Abstract

The utility model discloses an operation handle assembly, which comprises a handle base and a knob, wherein the handle base is provided with an installation groove matched with the knob in an alignment way, the inner end part of the knob is convexly provided with a limit boss along the direction facing the installation groove, a brake-separating limit assembly, an elastic limit assembly and a brake-closing limit assembly which can be propped against the side wall of the limit boss are sequentially arranged in the installation groove along the circumferential direction of the installation groove, and the elastic limit assembly can elastically deform along the radial direction of the installation groove; and a brake separating limit groove capable of accommodating the limit boss is formed between the elastic limit assembly and the brake separating limit assembly, the brake separating limit groove is aligned with a brake separating gear of the knob, and the brake closing limit assembly is aligned with a brake closing gear of the knob. The operation handle assembly can prevent the cabinet door from being directly closed due to the fact that the knob is deviated and out of position when the knob is in the opening gear, and ensure the cabinet door closing smoothness and the operation efficiency of the power distribution cabinet. The utility model also discloses a power distribution cabinet applying the operating handle assembly.

Description

Power distribution cabinet and operating handle assembly thereof

Technical Field

The utility model relates to the technical field of matched equipment of power system power distribution cabinet equipment, in particular to an operating handle assembly. The utility model also relates to a power distribution cabinet using the operating handle assembly.

Background

The external operation handle of the power distribution cabinet is used as an accessory device of the circuit breaker, and is usually installed on the power distribution cabinet door, and is connected with the circuit breaker in the cabinet through a linkage shaft, so that the circuit breaker in the cabinet is operated outside the cabinet.

When the cabinet door is in an open state, the knob can freely rotate between the opening and closing, and in this case, the knob can stay at any position due to the influence of false touch or other external force action and the like, so that a worker is required to manually rotate the knob to a proper position before closing the cabinet door, and then the door can be normally closed.

Please refer to fig. 1 to 3 in combination. Fig. 1 is a side view of a mating structure between an operating handle and a circuit breaker of a typical power distribution cabinet in the prior art; FIG. 2 is a front view of the operating handle of FIG. 1; fig. 3 is an enlarged view of a part of the end structure of the linkage shaft in fig. 1.

As shown in fig. 2, the normal operation handle has a RESET (RESET) gear 201, a break (OFF) gear 202, and a close (ON) gear 203, which correspond to the gears of the internal circuit breaker, respectively, and the knob is freely rotatable between these gears.

When the knob is in the opening gear, the cabinet door can be freely opened and closed; when the knob is in a closing gear, the cabinet door cannot be opened.

The main principle of the analysis and understanding of the device is as follows in combination with fig. 1, 2 and 3: when the cabinet door is closed, the linkage shaft stretches into the operating handle, and when the cabinet door is opened, the linkage shaft is separated from the operating handle. A boss is arranged at the head of the linkage shaft, and the boss is blocked or abducted by utilizing the internal part of the operating handle so as to realize the control of the cabinet door switch.

On the basis, it can be known that the linkage shaft has directivity, after the mechanism is in the opening gear and the cabinet door is opened, the inner linkage shaft is in the opening gear state, and the outer knob is also in the opening gear state, but because the knob can freely rotate at this time, the linkage shaft can deviate from the opening gear due to the influence of accidental touch or other external force effects, so that the cabinet door cannot be normally closed. Therefore, in actual operation, before the cabinet door is closed, the knob needs to be manually reset to the opening gear, and the cabinet door can be smoothly closed.

Therefore, how to optimize the assembly structure of the operating handle assembly so as to prevent the cabinet door from being directly closed due to the offset and misalignment of the knob when the knob is in the opening gear, and ensure the cabinet door closing fluency and the operating efficiency of the power distribution cabinet is an important technical problem to be solved by the technicians in the field at present.

Disclosure of Invention

The utility model aims to provide an operating handle assembly, which can prevent a cabinet door from being directly closed due to offset and misalignment of a knob when the knob is in a brake-separating gear, and ensure the cabinet door closing smoothness and the operating efficiency of a power distribution cabinet. Another object of the present utility model is to provide a power distribution cabinet using the above-mentioned operating handle assembly.

In order to solve the technical problems, the utility model provides an operation handle assembly, which comprises a handle base and a knob rotatably arranged on the handle base in a fixed shaft manner, wherein the handle base is provided with an installation groove matched with the knob in an alignment manner, the inner end part of the knob is convexly provided with a limit boss along the direction facing the installation groove, a brake-separating limit assembly, an elastic limit assembly and a brake-closing limit assembly which can be propped against the side wall of the limit boss are sequentially arranged in the installation groove along the circumferential direction of the installation groove, and the elastic limit assembly can elastically deform along the radial direction of the installation groove;

the elastic limiting assembly and the brake separating limiting assembly are connected through a brake separating limiting groove which can accommodate the limiting boss, the brake separating limiting groove is aligned with a brake separating gear of the knob, and the brake closing limiting assembly is aligned with a brake closing gear of the knob.

Preferably, the middle part of mounting groove is provided with annular baffle along its axial protrusion, annular baffle is followed the circumference extension of mounting groove and head and the tail meet, annular baffle's outer wall with form between the inner wall of mounting groove confession knob male annular guide slot, annular baffle's inboard forms spacing chamber, break brake spacing subassembly elasticity spacing subassembly the spacing subassembly of closing a floodgate is all located spacing intracavity.

Preferably, the elastic limiting assembly comprises a pressing clamping table, a transition positioning boss and a reference clamping table which are arranged in the limiting cavity in a protruding manner along the axial direction of the mounting groove, and the pressing clamping table, the transition positioning boss and the reference clamping table are sequentially arranged between the opening limiting assembly and the closing limiting assembly along the circumferential direction of the mounting groove;

the elastic limiting assembly further comprises a transition torsion spring coaxially sleeved on the transition positioning boss, one end of the transition torsion spring is clamped on the reference clamping table, the other end of the transition torsion spring is clamped on the compression clamping table, the transition torsion spring further comprises an arched deformation section located between the transition positioning boss and the compression clamping table, and the arch of the arched deformation section faces the limiting boss and is in contact fit with the limiting boss.

Preferably, the brake separating and limiting assembly comprises a brake separating and positioning boss which is arranged in the limiting cavity in a protruding mode along the axial direction of the mounting groove, and further comprises a brake separating torsion spring which is coaxially sleeved on the brake separating and positioning boss, one end of the brake separating torsion spring abuts against the inner wall of the annular guide plate, and the other end of the brake separating torsion spring extends out of the brake separating and positioning boss and between the compression clamping platforms from outside to inside along the direction perpendicular to the axis of the mounting groove.

Preferably, the closing limiting assembly comprises a closing positioning boss protruding axially along the mounting groove and arranged in the limiting cavity, and further comprises a closing torsion spring coaxially sleeved on the closing positioning boss, one end of the closing torsion spring abuts against the inner wall of the annular guide plate, and the other end of the closing torsion spring extends towards the axis direction of the mounting groove.

Preferably, the closing limiting assembly further comprises a closing clamping table protruding in the limiting cavity along the axial direction of the mounting groove, the closing clamping table is located between the closing positioning boss and the elastic limiting assembly, one end of the closing torsion spring abuts against the inner wall of the annular guide plate, and the other end of the closing torsion spring extends out of the opening positioning boss and between the closing clamping table from outside to inside along the direction perpendicular to the axis of the mounting groove.

Preferably, the inner end of the knob is provided with an annular inner supporting plate and an annular outer supporting plate along the axial protrusion of the inner end, the annular inner supporting plate and the annular outer supporting plate are coaxially arranged from inside to outside and are in clearance fit, the annular guide plate is inserted between the annular inner supporting plate and the annular outer supporting plate, the annular outer supporting plate is inserted in the annular guide groove, and the limiting boss is arranged on the annular inner supporting plate in a protruding mode.

Preferably, a reset clamping table and a closing in-place clamping table which are propped against the side wall of the limiting boss are convexly arranged in the annular guide groove, the reset clamping table is aligned with a reset gear of the knob, and the opening limiting assembly, the elastic limiting assembly and the closing limiting assembly are sequentially arranged between the reset clamping table and the closing in-place clamping table along the circumferential direction of the mounting groove;

the inner end edge of the annular outer supporting plate protrudes towards the mounting groove, and a limiting clamping block is arranged on the inner end edge of the annular outer supporting plate in a protruding mode, and the reset clamping table and the closing in-place clamping table can respectively abut against the side walls of the limiting clamping block.

The utility model also provides a power distribution cabinet, which comprises a cabinet body and an operating handle assembly arranged on the cabinet body, wherein the operating handle assembly is the operating handle assembly according to any one of the above.

Compared with the background art, in the operation and use process of the operation handle assembly provided by the utility model, when the knob is screwed to the opening gear, the limiting boss can be cooperatively matched and reliably limited by the elastic limiting assembly and the opening limiting assembly, so that the position of the limiting boss is limited in the opening limiting groove, the limiting boss is prevented from being separated from the opening limiting groove under the action of error touch or other external force, the whole knob is ensured to be positioned at the position aligned with the opening gear, the phenomenon that the knob deviates from the opening gear under the opening state due to the influence of error touch or other external force, the phenomenon that the cabinet door cannot be directly closed due to the phenomenon is avoided, the stable alignment of the knob and the opening gear under the opening state is ensured, the cabinet door can be smoothly and directly closed under the opening state, and the operation efficiency of the cabinet door is ensured. When the knob is required to be screwed to the closing gear, the knob is screwed by a worker, after the knob rotates in the process, the limiting boss is contacted with the elastic limiting assembly, the knob keeps on rotating under the screwing operation of the worker, the elastic limiting assembly is enabled to be subjected to elastic deformation due to the pressure exerted by the limiting boss, the space for the limiting boss to move continuously along the circumferential direction of the mounting groove is reserved, the limiting boss can overcome the resistance of the elastic limiting assembly to move synchronously with the knob until the limiting boss is separated from the opening limiting groove, the knob can continue to rotate until the limiting boss abuts against the closing limiting assembly, the knob is prevented from rotating excessively and dislocation, and the knob is screwed to the closing gear. When the knob is required to be screwed to the opening gear by the closing gear, the operator operates the knob to reversely rotate until the limiting boss abuts against the elastic limiting assembly, and then the knob keeps on continuously reversing the trend of rotating under the screwing operation of the operator, so that the elastic limiting assembly is subjected to the pressure exerted by the limiting boss and is elastically deformed, the space for continuously and reversely moving the limiting boss along the circumferential direction of the mounting groove is reserved, the limiting boss can continuously and reversely move synchronously with the knob after overcoming the resistance of the elastic limiting assembly until the limiting boss enters the opening limiting groove, and the knob is screwed to the opening gear.

In another preferred scheme of the utility model, the middle part of the mounting groove is provided with an annular guide plate in a protruding mode along the axial direction of the mounting groove, the annular guide plate extends along the circumferential direction of the mounting groove and is connected end to end, an annular guide groove for the knob to be inserted is formed between the outer wall of the annular guide plate and the inner wall of the mounting groove, a limiting cavity is formed in the inner side of the annular guide plate, and the opening limiting assembly, the elastic limiting assembly and the closing limiting assembly are all located in the limiting cavity. The annular guide plate cooperates with the annular guide groove, so that a certain rotation guide can be provided for the knob, and the tracking property and stability in the rotation process of the knob are ensured. The spacing chamber then can provide sufficient assembly space for separating brake spacing subassembly, elasticity spacing subassembly, the spacing subassembly of combined floodgate to separate the relevant cooperation part of mounting groove and knob main part cooperation action part and spacing boss through annular baffle, in order to avoid taking place the structural interference between the relevant subassembly, guarantee the steady smooth operation of each action part in the operating handle subassembly.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a side view of a mating structure between an operating handle and a circuit breaker of a typical power distribution cabinet in the prior art;

FIG. 2 is a front view of the operating handle of FIG. 1;

FIG. 3 is an enlarged view of a portion of the end structure of the linkage shaft of FIG. 1;

wherein:

20-operating a handle; 201-reset gear; 202-a brake-separating gear; 203-a closing gear; 21-a knob; a 22-circuit breaker; 221-a linkage shaft; 222-boss; 23-cabinet door;

FIG. 4 is a side cross-sectional view of an operating handle assembly according to one embodiment of the present utility model;

FIG. 5 is an isometric view of the structure of the knob of FIG. 4;

FIG. 6 is a schematic view showing the relative positions of the limiting boss and the mating member of the knob of FIG. 4 in the opening gear position;

FIG. 7 is a schematic view of the structure of the limiting boss in FIG. 6 when contacting the arch-shaped deformation segment;

fig. 8 is a schematic structural diagram of the limiting boss in fig. 6 when the limiting boss abuts against the closing torsion spring.

Wherein:

10-a handle base; 101-a mounting groove; 102-a brake-separating limit groove; 103-a ring-shaped guide plate; 104-an annular guide slot; 105-limiting cavity; 106-resetting the clamping table; 107-closing in-place clamping table; 11-a knob; 111-limiting bosses; 112-an annular inner support plate; 113-an annular outer support plate; 114-limiting clamping blocks; 12-transition torsion springs; 121-pressing a clamping table; 122-transitional positioning bosses; 123-a reference clamping table; 124-an arched deformation section; 13-a brake-separating torsion spring; 131-opening a brake positioning boss; 14-closing torsion springs; 141-closing positioning bosses; 142-closing clamping table.

Detailed Description

The core of the utility model is to provide an operation handle assembly, which can avoid the situation that the cabinet door cannot be directly closed due to the offset and the misalignment of the knob when the knob is in the opening gear, and ensure the cabinet door closing fluency and the operation efficiency of the power distribution cabinet; simultaneously, provide a switch board of using above-mentioned operating handle subassembly.

In order to better understand the aspects of the present utility model, the present utility model will be described in further detail with reference to the accompanying drawings and detailed description.

It should be noted in advance that, in the present utility model, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, in the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact through additional features therebetween.

In addition, the first feature being "above," "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Please refer to fig. 4 to fig. 8 in combination.

In a specific embodiment, the operating handle assembly provided by the utility model comprises a handle base 10 and a knob 11 rotatably arranged on the handle base 10 in a fixed shaft manner, wherein the middle part of the handle base 10 is provided with a mounting groove 101 matched with the knob 11 in a aligned manner, the inner end part of the knob 11 is convexly provided with a limit boss 111 along the direction facing the mounting groove 101, a brake-separating limit assembly, an elastic limit assembly and a brake-closing limit assembly which can be propped against the side wall of the limit boss 111 are sequentially arranged in the mounting groove 101 along the circumferential direction of the mounting groove 101, and the elastic limit assembly can elastically deform along the radial direction of the mounting groove 101;

a brake separating limit groove 102 capable of accommodating the limit boss 111 is formed between the elastic limit assembly and the brake separating limit assembly, the brake separating limit groove 102 is aligned with a brake separating gear of the knob 11, and the brake closing limit assembly is aligned with a brake closing gear of the knob 11.

In the operation and use process, when the knob 11 is screwed to the opening gear, the limiting boss 111 can be cooperatively matched and reliably limited by the elastic limiting component and the opening limiting component, so that the position of the limiting boss 111 is limited in the opening limiting groove 102, the limiting boss 111 is prevented from being separated from the opening limiting groove 102 under the action of error touch or other external force, the knob 11 is ensured to be positioned at the position opposite to the opening gear, the knob 11 is prevented from deviating from the opening gear under the opening state due to the influence of error touch or other external force, the phenomenon that a cabinet door cannot be directly closed due to the phenomenon is avoided, the stable alignment of the knob 11 and the opening gear under the opening state is ensured, the cabinet door can be smoothly and directly closed under the opening state, and the operation efficiency of the cabinet door is ensured.

When the knob 11 is required to be screwed to the closing gear, a worker screws the knob 11, after the knob 11 rotates and the limiting boss 111 contacts with the elastic limiting assembly, the knob 11 keeps on rotating under the screwing operation of the worker, so that the elastic limiting assembly is subjected to elastic deformation due to the pressure exerted by the limiting boss 111, a space for the limiting boss 111 to continuously move along the circumferential direction of the mounting groove 101 is reserved, the limiting boss 111 can continuously synchronously move along with the knob 11 against the resistance of the elastic limiting assembly until the limiting boss 111 is separated from the opening limiting groove 102, the knob 11 can continuously rotate until the limiting boss 111 abuts against the closing limiting assembly, the knob 11 is prevented from rotating excessively and dislocating, and the knob 11 is screwed to the closing gear at the moment.

When the knob 11 is required to be screwed to the opening gear from the closing gear, the operator operates the knob 11 to reversely rotate until the limiting boss 111 is propped against the elastic limiting assembly, and then the knob 11 keeps continuously and reversely rotates under the screwing operation of the operator, so that the elastic limiting assembly is elastically deformed due to the pressure applied by the limiting boss 111, a space for continuously and reversely moving the limiting boss 111 along the circumferential direction of the mounting groove 101 is reserved, the limiting boss 111 can continuously and reversely move synchronously with the knob 11 against the resistance of the elastic limiting assembly until the limiting boss 111 enters the opening limiting groove 102, and the knob 11 is screwed to the opening gear.

It should be noted that, for facilitating understanding of the conventional scheme, the reset gear, the opening gear and the closing gear corresponding to the knob 11 in each drawing are sequentially arranged in a clockwise direction. However, it should be understood that in practical application, the reset gear, the opening gear and the closing gear corresponding to the knob 11 may be sequentially arranged in a counterclockwise direction according to different requirements of practical working conditions or requirements of equipment structural layout. The staff can carry out the adaptability adjustment to the arrangement direction of each brake separating and limiting assembly, the spacing subassembly of elasticity, the spacing subassembly of combined floodgate according to actual operating mode and component structure to optimize operating handle subassembly's operating mode adaptability satisfies the operating mode demand.

Further, the middle part of the mounting groove 101 is provided with an annular guide plate 103 along the axial protrusion of the mounting groove, the annular guide plate 103 extends along the circumferential direction of the mounting groove 101 and is connected end to end, an annular guide groove 104 for inserting the knob 11 is formed between the outer wall of the annular guide plate 103 and the inner wall of the mounting groove 101, a limiting cavity 105 is formed on the inner side of the annular guide plate 103, and the opening limiting assembly, the elastic limiting assembly and the closing limiting assembly are all located in the limiting cavity 105. The annular guide plate 103 cooperates with the annular guide groove 104 to provide a certain rotation guide for the knob 11, and ensures the tracking and stability of the knob 11 in the rotation process. The limiting cavity 105 can provide sufficient assembly space for the opening limiting assembly, the elastic limiting assembly and the closing limiting assembly, and separate the matching action part of the mounting groove 101 and the main body of the knob 11 from the matching part of the limiting boss 111 through the annular guide plate 103, so as to avoid structural interference between the related assemblies and ensure stable and smooth operation of each action part in the operating handle assembly.

On the basis, the elastic limiting assembly comprises a pressing clamping table 121, a transition positioning boss 122 and a reference clamping table 123 which are convexly arranged in the limiting cavity 105 along the axial direction of the mounting groove 101, and the pressing clamping table 121, the transition positioning boss 122 and the reference clamping table 123 are sequentially arranged between the opening limiting assembly and the closing limiting assembly along the circumferential direction of the mounting groove 101;

the elastic limiting assembly further comprises a transition torsion spring 12 coaxially sleeved on the transition positioning boss 122, one end of the transition torsion spring 12 is clamped on the reference clamping table 123, the other end of the transition torsion spring 12 is clamped on the compression clamping table 121, the transition torsion spring 12 further comprises an arched deformation section 124 located between the transition positioning boss 122 and the compression clamping table 121, and the arch of the arched deformation section 124 faces the limiting boss 111 and is in contact fit with the limiting boss 111.

In practical assembly applications, the arch-shaped deformation section 124 cooperates with the brake release limiting assembly to form the brake release limiting slot 102. In the screwing process of the knob 11, when the limit boss 111 passes through the transition torsion spring 12, the arched deformation section 124 is contacted with and pressed against the side wall of the limit boss 111, and the knob 11 keeps a trend of continuing to rotate under the screwing operation of a worker, so that the arched deformation section 124 is subjected to the pressure exerted by the limit boss 111 and is elastically deformed in the direction away from the axle center of the mounting groove 101, thereby leaving a space for the limit boss 111 to continue to move along the circumferential direction of the mounting groove 101, and the limit boss 111 can overcome the resistance of an elastic limit assembly and continue to synchronously move along with the knob 11; after the limiting boss 111 and the arched deformation section 124 are separated from contact, the arched deformation section 124 elastically resets towards the direction approaching to the axle center of the mounting groove 101.

In addition, the brake separating and limiting assembly comprises a brake separating and positioning boss 131 protruding in the limiting cavity 105 along the axial direction of the mounting groove 101, and further comprises a brake separating and positioning torsion spring 13 coaxially sleeved on the brake separating and positioning boss 131, one end of the brake separating and positioning torsion spring 13 abuts against the inner wall of the annular guide plate 103, and the other end of the brake separating and positioning torsion spring extends between the brake separating and positioning boss 131 and the compression clamping table 121 from outside to inside along the direction perpendicular to the axis of the mounting groove 101. One end of the brake separating torsion spring 13, which extends out between the brake separating positioning boss 131 and the compression clamping table 121, can be propped against the limiting boss 111, so that the trend that the limiting boss 111 continuously moves along the circumferential direction of the mounting groove 101 is limited, excessive rotation and offset dislocation caused by continuous rotation of the knob 11 are avoided, and the alignment precision and the adaptation effect of the knob 11 and the brake separating gear are further optimized.

Specifically, the closing limiting assembly comprises a closing positioning boss 141 protruding in the limiting cavity 105 along the axial direction of the mounting groove 101, and further comprises a closing torsion spring 14 coaxially sleeved on the closing positioning boss 141, one end of the closing torsion spring 14 abuts against the inner wall of the annular guide plate 103, and the other end of the closing torsion spring 14 stretches towards the axis direction of the mounting groove 101. One end of the closing torsion spring 14 extending towards the axis direction of the mounting groove 101 can be propped against the limiting boss 111, so that the trend that the limiting boss 111 continuously moves along the circumferential direction of the mounting groove 101 is limited, excessive rotation and offset dislocation caused by continuous rotation of the knob 11 are avoided, and the alignment precision and the adaptation effect of the knob 11 and the closing gear are further optimized.

More specifically, the closing limiting assembly further includes a closing clamping table 142 protruding in the limiting cavity 105 along the axial direction of the mounting groove 101, the closing clamping table 142 is located between the closing positioning boss 141 and the elastic limiting assembly, one end of the closing torsion spring 14 abuts against the inner wall of the annular guide plate 103, and the other end extends between the closing positioning boss 141 and the closing clamping table 142 from outside to inside along the direction perpendicular to the axis of the mounting groove 101. The closing clamping table 142 can cooperate with the closing positioning boss 141, so that certain structural limit and guide are provided for the extending end of the closing torsion spring 14, loosening or dislocation of the extending end of the closing torsion spring 14 is avoided, and the abutting limiting effect of the closing torsion spring 14 on the limiting boss 111 is ensured.

It should be correspondingly noted that, in combination with the accompanying drawings, under the general working condition, the opening limit assembly, the elastic limit assembly and the closing limit assembly all adopt torsion springs as main action components which are in butt fit with the limit boss 111, but in practical application, buckles, leaf springs or reeds with certain structural elasticity and deformability can also be adopted as action components which are in butt fit with the limit boss 111 in the opening limit assembly, the elastic limit assembly and the closing limit assembly, and staff can flexibly select and adjust according to the actual working condition requirements. In principle, any suitable operating handle assembly may be used.

On the other hand, the inner end portion of the knob 11 is provided with an annular inner support plate 112 and an annular outer support plate 113 protruding in the axial direction thereof, the annular inner support plate 112 and the annular outer support plate 113 are coaxially arranged from inside to outside and are in clearance fit, the annular guide plate 103 is inserted between the annular inner support plate 112 and the annular outer support plate 113, the annular outer support plate 113 is inserted in the annular guide groove 104, and the limit boss 111 is provided protruding on the annular inner support plate 112. The annular inner supporting plate 112, the annular guide plate 103, the annular outer supporting plate 113 and the annular guide groove 104 are coaxially and alternately matched, so that a circumferential matching mechanism is formed, reliable structure limiting and guiding are provided for circumferential rotation of the knob 11, loosening or dislocation in the rotation process of the knob 11 is avoided, and rotation stability and tracking performance of the knob 11 are guaranteed.

In addition, a reset clamping table 106 and a closing in-place clamping table 107 which are propped against the side wall of the limiting boss 111 are convexly arranged in the annular guide groove 104, the reset clamping table 106 and the reset gear of the knob 11 are arranged in an aligned manner, and a brake-separating limiting assembly, an elastic limiting assembly and a closing limiting assembly are sequentially arranged between the reset clamping table 106 and the closing in-place clamping table 107 along the circumferential direction of the mounting groove 101;

the inner end edge of the annular outer supporting plate 113 is provided with a limiting clamping block 114 in a protruding mode along the direction towards the mounting groove 101, and the reset clamping table 106 and the closing in-place clamping table 107 can respectively abut against the side walls of the limiting clamping block 114.

When the knob 11 rotates to the reset gear, the limiting clamping block 114 is propped against the reset clamping table 106, so that the knob 11 is limited to continue to rotate through linkage fit of the limiting clamping block 114 and the main structure of the knob 11, and the knob 11 is prevented from loosening or losing position due to excessive rotation, so that the alignment precision of the knob 11 and the reset gear is ensured. When the knob 11 rotates to the closing gear and continues to rotate for a distance, the limiting clamping block 114 abuts against the closing in-place clamping block 107, so that the knob 11 is limited to continue to rotate, and the phenomenon that the knob 11 is excessively rotated to release or lose position is avoided.

It should be correspondingly noted that, during actual assembly application, the knob 11 is rotated to the closing gear by the position of the opening gear or the resetting gear, and after the closing gear is turned, one end of the knob can be continuously rotated, and the distance can ensure that the knob 11 and the linkage shaft can continuously synchronously link one end of the stroke, so that the closing of the circuit breaker is ensured to be fully and reliably carried out, the phenomena of virtual connection and the like of the circuit breaker are avoided, and the related operation safety of the circuit breaker is ensured.

In a specific embodiment, the power distribution cabinet provided by the utility model comprises a cabinet body and an operation handle assembly arranged on the cabinet body, wherein the operation handle assembly is the operation handle assembly described in the embodiment. The operating handle assembly of the power distribution cabinet can prevent the cabinet door from being directly closed due to the fact that the knob is deviated and out of position when the knob is in the opening gear, and ensures the cabinet door closing smoothness and the operating efficiency of the power distribution cabinet.

In summary, it is known that, in the operation and use process of the operation handle assembly provided by the utility model, when the knob is screwed to the opening gear, the limiting boss can be cooperatively matched and reliably limited by the elastic limiting assembly and the opening limiting assembly, so that the position of the limiting boss is limited in the opening limiting groove, the limiting boss is prevented from being separated from the opening limiting groove under the action of error touch or other external force, the whole knob is ensured to be positioned at the position aligned with the opening gear, the phenomenon that the knob deviates from the opening gear under the opening state due to the influence of error touch or other external force, the phenomenon that the cabinet door cannot be directly closed due to the phenomenon is avoided, the stable alignment of the knob and the opening gear under the opening state is ensured, the cabinet door can be smoothly and directly closed under the opening state, and the cabinet door operation efficiency is ensured. When the knob is required to be screwed to the closing gear, the knob is screwed by a worker, after the knob rotates in the process, the limiting boss is contacted with the elastic limiting assembly, the knob keeps on rotating under the screwing operation of the worker, the elastic limiting assembly is enabled to be subjected to elastic deformation due to the pressure exerted by the limiting boss, the space for the limiting boss to move continuously along the circumferential direction of the mounting groove is reserved, the limiting boss can overcome the resistance of the elastic limiting assembly to move synchronously with the knob until the limiting boss is separated from the opening limiting groove, the knob can continue to rotate until the limiting boss abuts against the closing limiting assembly, the knob is prevented from rotating excessively and dislocation, and the knob is screwed to the closing gear. When the knob is required to be screwed to the opening gear by the closing gear, the operator operates the knob to reversely rotate until the limiting boss abuts against the elastic limiting assembly, and then the knob keeps on continuously reversing the trend of rotating under the screwing operation of the operator, so that the elastic limiting assembly is subjected to the pressure exerted by the limiting boss and is elastically deformed, the space for continuously and reversely moving the limiting boss along the circumferential direction of the mounting groove is reserved, the limiting boss can continuously and reversely move synchronously with the knob after overcoming the resistance of the elastic limiting assembly until the limiting boss enters the opening limiting groove, and the knob is screwed to the opening gear.

In addition, the power distribution cabinet applying the operating handle assembly can avoid the situation that the cabinet door cannot be directly closed due to the fact that the knob is shifted and out of position when the knob is in the opening gear, and ensure the cabinet door closing smoothness and the operating efficiency of the power distribution cabinet.

The operation handle assembly and the power distribution cabinet using the same are described in detail. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (9)

1. The operating handle assembly is characterized by comprising a handle base and a knob which is rotationally arranged on the handle base by a fixed shaft, wherein the handle base is provided with an installation groove which is matched with the knob in a counterpoint mode, the inner end part of the knob is provided with a limiting boss in a protruding mode along the direction of the installation groove, a brake opening limiting assembly, an elastic limiting assembly and a brake closing limiting assembly which can be propped against the side wall of the limiting boss are sequentially arranged in the installation groove along the circumferential direction of the installation groove, and the elastic limiting assembly can elastically deform along the radial direction of the installation groove;

the elastic limiting assembly and the brake separating limiting assembly are connected through a brake separating limiting groove which can accommodate the limiting boss, the brake separating limiting groove is aligned with a brake separating gear of the knob, and the brake closing limiting assembly is aligned with a brake closing gear of the knob.

2. The operating handle assembly according to claim 1, wherein an annular guide plate is arranged in the middle of the mounting groove in a protruding mode along the axial direction of the mounting groove, the annular guide plate extends along the circumferential direction of the mounting groove and is connected end to end, an annular guide groove for the knob to be inserted is formed between the outer wall of the annular guide plate and the inner wall of the mounting groove, a limiting cavity is formed in the inner side of the annular guide plate, and the opening limiting assembly, the elastic limiting assembly and the closing limiting assembly are all located in the limiting cavity.

3. The operating handle assembly according to claim 2, wherein the elastic limiting assembly comprises a pressing clamping table, a transition positioning boss and a reference clamping table which are convexly arranged in the limiting cavity along the axial direction of the mounting groove, and the pressing clamping table, the transition positioning boss and the reference clamping table are sequentially arranged between the opening limiting assembly and the closing limiting assembly along the circumferential direction of the mounting groove;

the elastic limiting assembly further comprises a transition torsion spring coaxially sleeved on the transition positioning boss, one end of the transition torsion spring is clamped on the reference clamping table, the other end of the transition torsion spring is clamped on the compression clamping table, the transition torsion spring further comprises an arched deformation section located between the transition positioning boss and the compression clamping table, and the arch of the arched deformation section faces the limiting boss and is in contact fit with the limiting boss.

4. The operating handle assembly according to claim 3, wherein the brake separating and limiting assembly comprises a brake separating and positioning boss protruding in the limiting cavity along the axial direction of the mounting groove, and further comprises a brake separating torsion spring coaxially sleeved on the brake separating and positioning boss, one end of the brake separating and positioning torsion spring is propped against the inner wall of the annular guide plate, and the other end of the brake separating and positioning torsion spring protrudes between the brake separating and positioning boss and the compression clamping table from outside to inside along the direction perpendicular to the axis of the mounting groove.

5. The operating handle assembly according to claim 2, wherein the closing limiting assembly comprises a closing positioning boss protruding in the limiting cavity along the axial direction of the mounting groove, and further comprises a closing torsion spring coaxially sleeved on the closing positioning boss, one end of the closing torsion spring abuts against the inner wall of the annular guide plate, and the other end of the closing torsion spring extends towards the axis direction of the mounting groove.

6. The operating handle assembly according to claim 5, wherein the closing limiting assembly further comprises a closing clamping table protruding in the limiting cavity along the axial direction of the mounting groove, the closing clamping table is located between the closing positioning boss and the elastic limiting assembly, one end of the closing torsion spring abuts against the inner wall of the annular guide plate, and the other end of the closing torsion spring protrudes between the closing positioning boss and the closing clamping table from outside to inside along the direction perpendicular to the axis of the mounting groove.

7. The operating handle assembly according to claim 2, wherein the inner end portion of the knob is provided with an annular inner stay plate and an annular outer stay plate protruding in an axial direction thereof, the annular inner stay plate and the annular outer stay plate are coaxially arranged from inside to outside and are in clearance fit, the annular guide plate is inserted between the annular inner stay plate and the annular outer stay plate, the annular outer stay plate is inserted in the annular guide groove, and the limit boss is provided protruding on the annular inner stay plate.

8. The operating handle assembly according to claim 7, wherein a reset clamping table and a closing in-place clamping table which are propped against the side wall of the limit boss are convexly arranged in the annular guide groove, the reset clamping table is aligned with a reset gear of the knob, and the opening limit assembly, the elastic limit assembly and the closing limit assembly are sequentially arranged between the reset clamping table and the closing in-place clamping table along the circumferential direction of the mounting groove;

the inner end edge of the annular outer supporting plate protrudes towards the mounting groove, and a limiting clamping block is arranged on the inner end edge of the annular outer supporting plate in a protruding mode, and the reset clamping table and the closing in-place clamping table can respectively abut against the side walls of the limiting clamping block.

9. A power distribution cabinet comprising a cabinet body and an operating handle assembly arranged on the cabinet body, wherein the operating handle assembly is the operating handle assembly according to any one of claims 1 to 8.

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