CN206727029U - The casing mounting structure of miniature circuit breaker - Google Patents

Abstract

A kind of casing mounting structure of miniature circuit breaker, including base and cover plate, the inner side of the cover sidewall of the cover plate on the outside of the base side wall of base with being engaged so as to forming the shell structure of breaker, be provided with location division and locating shaft on base side wall, described location division and locating shaft respectively with the connector that is arranged on on the inside of cover sidewall and positioning hole is engaged so that cover plate is installed on base.The utility model on the inside of the outside of base and cover plate by setting location division and connector, and locating shaft and positioning hole, during so that cover plate being sleeved on base and forms Shell of circuit breaker structure, location division is set to coordinate with connector spacing, locating shaft coordinates spacing with positioning hole, so as to enhance the bonding strength between base and cover plate, the overall non-deformability of breaker is improved, ensure that the appearance stability and use reliability of breaker.

Description

The casing mounting structure of miniature circuit breaker

Technical field

Low Voltage Electrical Apparatus is the utility model is related to, particularly a kind of casing mounting structure of miniature circuit breaker.

Background technology

Miniature circuit breaker, which is primarily adapted for use in, exchanges 50Hz or 60Hz, rated voltage 230V, the circuit of rated current to 32 peaces It is middle overload, short-circuit protection, while infrequently conversion that can also be under normal circumstances as circuit is used, and is particularly suitable for use in The lighting and power distribution system of residence.Existing miniature circuit breaker, volume is less and less and function is more and more, to the housing of breaker It is required that more and more higher, but the housing of existing miniature circuit breaker is mostly thin-walled class formation, is formed between the base of housing and cover plate Mainly by rivet, and remaining position is only to be bonded design in addition to riveting location, has no bonding strength, causes breaker to exist In use, the housing of breaker, which easily absorbs water, occurs warpage, deformation in severe high temperature, high humidity environment, and occur obvious outer See gap so that the location dimension of the hinge axis hole in housing changes so as to have impact on the reliability of breaker operating characteristic.

Utility model content

The defects of the purpose of this utility model is to overcome prior art, there is provided one kind is simple in construction, bonding strength is high, anti- The casing mounting structure of the strong miniature circuit breaker of deformability.

To achieve the above object, the utility model employs following technical scheme：

A kind of casing mounting structure of miniature circuit breaker, including base 1 and cover plate 2, the cover sidewall 23 of the cover plate 2 Inner side is engaged so as to form the shell structure of breaker with the outside of the base side wall 13 of base 1, is set on base side wall 13 There are a location division 3 and locating shaft 5, described location division 3 and locating shaft 5 connector with being arranged on the inner side of cover sidewall 23 respectively 4 and positioning hole 6 is engaged so that cover plate 2 is installed on base 1.

Optionally, one end of the base 1 is provided with handle installation portion 11, and operation machine is provided with the side of handle installation portion 11 Structure installation portion 12, described location division 3 is between handle installation portion 11 and operating mechanism installation portion 12, described locating shaft 5 The side on the base side wall 13 of the drift angle of base 1 and positioned at operating mechanism installation portion 12 relative to location division 3 is arranged on, it is described Cover plate 2 is provided with the handle limiting section 21 and operation machine being correspondingly arranged respectively with handle installation portion 11 and operating mechanism installation portion 12 Structure limiting section 22, described connector 4 are between handle limiting section 21 and operating mechanism limiting section 22 and relative with location division 3 Set, described positioning hole 6 is located at the inner side of the cover sidewall 23 of the drift angle of cover plate 2 and is correspondingly arranged at operation machine with locating shaft 5 Side of the structure limiting section 22 away from connector 4.

Optionally, described location division 3 includes boss 31, inclined-plane 32, front side groove 33 and sidewall channels 34, described front side groove 33 with sidewall channels 34 in end to end and set respectively along the edge of base 1 and base side wall 13 and the end of boss 31 will be arranged on Inclined-plane 32 expose.

Optionally, the side of the boss 31 be fixedly mounted on the inner surface of base 1 and with handle installation portion 11 and behaviour The base side wall 13 made between mechanism installation portion 12 is disposed adjacent, and another lateral side of cover plate 2 extension is simultaneously set relatively with connector 4 Put, described inclined-plane 32 be located at boss 31 close to the end of the one end of base side wall 13 and with boss 31 is integrally formed sets boss 31 end covering, described front side groove 33 are arranged on base side wall 13 and positioned at inclined-plane 32 close to the top of the one end of base 1.

Optionally, described sidewall channels 34 are arranged on base side wall 13 and positioned at inclined-plane 32 close to operating mechanism installation portion The top of 12 sides, and the both sides of front side groove 33 respectively with the retaining wall 113 of handle installation portion 11 and one end phase of sidewall channels 34 Connection, the other end of sidewall channels 34 extend to base side along the section of inclined-plane 32 and base side wall 13 to the side where cover plate 2 The end of wall 13.

Optionally, described connector 4 includes being arranged on front side convex tendon 41 of the connector 4 away from the one end of cover plate 2 and is located at The side wall convex tendon 42 that connector 4 is set close to the side of operating mechanism limiting section 22 and along the edge of connector 4, described front side are convex Muscle 41 is engaged with the front side groove 33 of location division 3, and described side wall convex tendon 42 is engaged with the sidewall channels 34 of location division 3.

Optionally, described sidewall channels 34 are the arc groove being arranged on base side wall 13, and side wall convex tendon 42 is and this The fan-shaped convex tendon that arc groove is engaged.

Optionally, one end of base 1 is provided with handle installation portion 11, and described cover plate 2 is provided with right with handle installation portion 11 The handle limiting section 21 that should be set, retaining convex rib is additionally provided with the base side wall 13 between handle installation portion 11 and inclined-plane 32 14, the surface of the described vertical feet side wall 13 of retaining convex rib 14 stretches out, and described cover sidewall 23 is in connector 4 and hand Bent inwards between the opening 211 of handle limiting section 21 so as to form spacing half groove 24.

Optionally, described handle installation portion 11 includes installation base plate 111, fixing axle 112 and retaining wall 113, described peace Dress substrate 111 is located at one end of base 1 and is correspondingly arranged with the spacing substrate 212 of handle limiting section 21, described fixing axle 112 It is fixedly mounted on the middle part of installation base plate 111 and is engaged with the fixed shaft hole 213 of handle limiting section 21, described retaining wall 113 Protrude on the part of the setting of base 1 positioned at installation base plate 111 and be oppositely arranged with the opening 211 of handle limiting section 21, and keep off The both sides of wall 113 are connected with base side wall 13.

Optionally, described operating mechanism installation portion 12 includes mounting groove 121, baffle plate 122, lever mounting hole 123 and type Groove 124, described mounting groove 121 are located at one end of base 1 and are disposed adjacent with base side wall 13, and described baffle plate 122 is set The lower section of mounting groove 121 is arranged in the side of mounting groove 121 and positioned at the lower section of locating shaft 5, described lever mounting hole 123 And be correspondingly arranged with the lever spacing hole 222 of operating mechanism limiting section 22, described type groove 124 and lever mounting hole 123 are arranged side by side It is arranged at intervals and is correspondingly arranged with the connecting hole 221 of operating mechanism limiting section 22.

The utility model on the inside of the outside of base and cover plate by setting location division and connector, and locating shaft with determining Position hole so that when cover plate is sleeved on base and forms Shell of circuit breaker structure, make location division coordinate spacing, positioning with connector Axle and positioning hole cooperation are spacing, so as to enhance the bonding strength between base and cover plate, reduce breaker in severe rugged environment The change in size occurred during middle use, the overall non-deformability of breaker is improved, ensure that the appearance stability of breaker With use reliability.Preferably, described location division includes boss, inclined-plane, front side groove and sidewall channels, in vertical direction and level It is on direction that cover plate is spacing, it is not only convenient for assembling by the cooperation on connector 4 and inclined-plane 32, and suitability can be improved with suitable Answer mismachining tolerance.

Brief description of the drawings

Fig. 1 is the structural representation of base of the present utility model；

Fig. 2 is the structural representation of cover plate of the present utility model；

Fig. 3 is the fit structure schematic diagram of front side groove of the present utility model and front side convex tendon；

Fig. 4 is the fit structure schematic diagram of sidewall channels of the present utility model and side wall convex tendon；

Fig. 5 is the fit structure schematic diagram of positioning hole and locating shaft of the present utility model.

Embodiment

Embodiment of the present utility model is provided below in conjunction with accompanying drawing 1 to 5, further illustrates small-sized open circuit of the present utility model The casing mounting structure embodiment of device.The casing mounting structure of miniature circuit breaker of the present utility model is not limited to following reality Apply the description of example.

As illustrated in fig. 1 and 2, the casing mounting structure of miniature circuit breaker of the present utility model includes base 1 and cover plate 2, institute The outside for stating the inner side of the cover sidewall 23 of cover plate 2 and the base side wall 13 of base 1 is engaged so as to form the housing of breaker Structure, location division 3 and locating shaft 5 are provided with base side wall 13, described location division 3 and locating shaft 5 are respectively with being arranged on lid Connector 4 and positioning hole 6 on the inner side of plate side wall 23 are engaged and cover plate 2 are reliably installed on base 1.It is excellent Choosing, the groove of location division 3, described connector 4 is the convex tendon with fit depressions.The utility model passes through in the outer of base 1 Side and the inner side of cover plate 2 set location division 3 and connector 4, and locating shaft 5 and positioning hole 6 so that cover plate 2 is sleeved on base 1 simultaneously Formed Shell of circuit breaker structure when, location division 3 is coordinated with connector 4 spacing, locating shaft 5 coordinate with positioning hole 6 it is spacing so that The bonding strength between base 1 and cover plate 2 is enhanced, the size occurred when breaker uses in severe rugged environment is reduced and becomes Change, improve the overall non-deformability of breaker, ensure that the appearance stability and use reliability of breaker.

As shown in figure 1, one end of the base 1 is provided with the handle installation portion 11 for being used for installing circuit breaker handle, in handle The side of installation portion 11 is provided with the operating mechanism installation portion 12 for the operating mechanism for being used to place breaker, described location division 3 Between handle installation portion 11 and operating mechanism installation portion 12, described locating shaft 5 is arranged on the base side wall 13 of the drift angle of base 1 Go up and be located at side of the operating mechanism installation portion 12 relative to location division 3.As shown in Fig. 2 described cover plate 2 be provided with respectively with The handle limiting section 21 and operating mechanism limiting section 22 that handle installation portion 11 and operating mechanism installation portion 12 are correspondingly arranged, it is described Connector 4 is oppositely arranged between handle limiting section 21 and operating mechanism limiting section 22 and with location division 3, described positioning hole 6 are correspondingly arranged at operating mechanism limiting section 22 away from being connected positioned at the inner side of the cover sidewall 23 of the drift angle of cover plate 2 and with locating shaft 5 The side of part 4.The utility model by the way that the fit structure of location division 3 and connector 4 to be arranged on to the side of handle installation portion 11, So that handle, after the action of prolonged frequent transitions, the bonding strength between base 1 and cover plate 2 at handle position is not yet It can weaken, while the fit structure of locating shaft 5 and positioning hole 6 is arranged on the housing vertex that stress easily concentrates so that be disconnected The housing of road device has higher stability and reliability.

Specifically, described handle installation portion 11 includes installation base plate 111, fixing axle 112 and retaining wall 113, described peace Dress substrate 111 is located at one end of base 1 and prominent base 1 sets the housing for the enough prominent breaker of handle for causing breaker to set For operating, the middle part that described fixing axle 112 is fixedly mounted on installation base plate 111 is used to be pivotally connected handle, described retaining wall 113 Protrude on the part of the setting of base 1 positioned at installation base plate 111 and set along the edge of installation base plate 111, and the two of retaining wall 113 Side is connected with base side wall 13 for handle is spacing.

Described operating mechanism installation portion 12 includes mounting groove 121, baffle plate 122, lever mounting hole 123 and type groove 124, institute The mounting groove 121 stated is located at one end of base 1 and is disposed adjacent the spring for installation operation mechanism with base side wall 13, described Baffle plate 122 be arranged on the side of mounting groove 121 and be used to obtain one end with the spring and abut against positioned at the lower section of locating shaft 5, Described lever mounting hole 123 is arranged on lever of the lower section for installation operation mechanism of mounting groove 121, described type groove 124 Being arranged at intervals and be engaged with the tripping of operating mechanism side by side with lever mounting hole 123 enables tripping along 124 spacing shifting of type groove It is dynamic.

Described handle limiting section 21 includes opening 211, spacing substrate 212 and fixed shaft hole 213, described spacing substrate 212 one end that cover plate 2 is correspondingly arranged at installation base plate 111 are used for the handle of breaker is spacing, and spacing substrate 212 is prominent Go out cover plate 2 to set so as to form opening 211, the opening 211 is oppositely arranged the handle enabled in opening with retaining wall 113 In 211 rotation-limited be used for operate, described fixed shaft hole 213 be located at the middle part of spacing substrate 212 and with the end of fixing axle 112 Portion is engaged for preventing handle from being come off from fixing axle 112.Preferably, described installation base plate 111 divides with spacing substrate 212 Wei not be with the circular substrate of 2 integrally formed setting of base 1 and cover plate.

Described operating mechanism limiting section 22 includes connecting hole 221 and lever spacing hole 222, described connecting hole 221 with Type groove 124 be correspondingly arranged cause breaker have can assembled annex function, described lever spacing hole 222 and lever mounting hole 123 are correspondingly arranged for the lever of operating mechanism is spacing.

One embodiment of the present utility model is that described location division 3 includes boss 31, inclined-plane 32, front side groove 33 and side Wall trench 34, described front side groove 33 are in end to end with sidewall channels 34 and set respectively along the edge of base 1 and base side wall 13 And the inclined-plane 32 for being arranged on the end of boss 31 is exposed.Specifically, the side of the boss 31 is fixedly mounted on the interior table of base 1 Base side wall 13 on face and between handle installation portion 11 and operating mechanism installation portion 12 is disposed adjacent, another lateral cover plate 2 Side extends simultaneously to be oppositely arranged with connector 4, and described inclined-plane 32 is located at boss 31 close to the end of the one end of base side wall 13 simultaneously The end of boss 31 is covered with integrally formed set of boss 31, described front side groove 33 is arranged on base side wall 13 and position In inclined-plane 32 close to the top of the one end of base 1, described sidewall channels 34 be arranged on base side wall 13 and positioned at inclined-plane 32 it is close The top of the side of operating mechanism installation portion 12, and the both sides of front side groove 33 respectively with the retaining wall 113 of handle installation portion 11 and side One end of wall trench 34 is connected, and the other ends of sidewall channels 34 is along the section of inclined-plane 32 and base side wall 13 to one where cover plate 2 Side extends to the end of base side wall 13.The utility model is by the front side groove 33 that is set along the edge of base 1, so as to vertical It is on direction that cover plate 2 is spacing, while the sidewall channels 34 by being set along the section of base side wall 13, so as in the horizontal direction will Cover plate 2 is spacing, is not only convenient for assembling by the cooperation on connector 4 and inclined-plane 32, and can improve suitability to adapt to process Error.

Described connector 4 includes being arranged on front side convex tendon 41 of the connector 4 away from the one end of cover plate 2 and positioned at connector 4 Close to the side of operating mechanism limiting section 22 and the side wall convex tendon 42 that is set along the edge of connector 4, during installation, such as the institutes of Fig. 3 to 5 Show, the bottom of connector 4 contacts with the surface on inclined-plane 32 connects and slid into along inclined-plane 32 inner side and the base of cover sidewall 23 The position that the outside of side wall 13 is engaged, described front side convex tendon 41 is set to be engaged with front side groove 33, while described side wall is convex Muscle 42 is engaged with sidewall channels 34.Preferably, described sidewall channels 34 are to be arranged on arc groove on base side wall 13, side wall Convex tendon 42 is the fan-shaped convex tendon being engaged with the arc groove, and the side of the positioning hole 6 is with being provided projectingly in the drift angle of base 1 Locating shaft 5 is engaged, and opposite side extends to the surface of cover sidewall 23.The utility model on base 1 and cover plate 2 by setting The microstructure that convex tendon and groove coordinate at three, the ability of breaker resistance to deformation in use is not only increased, is ensured The complete appearance of breaker, and the change in size of breaker in use is reduced, so as to improve breaker Stability and reliability.

As shown in figure 4, retaining convex rib 14 is additionally provided with base side wall 13 between retaining wall 113 and inclined-plane 32, it is described The surface of the vertical feet side wall 13 of retaining convex rib 14 stretches out, and described cover sidewall 23 is between connector 4 and opening 211 Bend inwards so as to form spacing half groove 24, described retaining convex rib 14 is engaged with spacing half groove 24 so that connector 4 Can occasionally there is the installation surplus of abundance, and connector 4 and handle installation portion 11 are relatively isolated for preventing from interfering after mounting.

Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded To belong to the scope of protection of the utility model.

Claims (10)

1. a kind of casing mounting structure of miniature circuit breaker, including base (1) and cover plate (2), it is characterised in that：The cover plate (2) inner side of cover sidewall (23) on the outside of the base side wall (13) of base (1) with being engaged so as to form the shell of breaker Body structure, location division (3) and locating shaft (5), described location division (3) and locating shaft (5) point are provided with base side wall (13) It is not engaged with the connector (4) and positioning hole (6) being arranged on cover sidewall (23) inner side so that cover plate (2) is installed in On base (1).

2. the casing mounting structure of miniature circuit breaker according to claim 1, it is characterised in that：The one of the base (1) End is provided with handle installation portion (11), and operating mechanism installation portion (12), described positioning are provided with the side of handle installation portion (11) Portion (3) is located between handle installation portion (11) and operating mechanism installation portion (12), and described locating shaft (5) is arranged on base (1) Side on the base side wall (13) of drift angle and positioned at operating mechanism installation portion (12) relative to location division (3)；

Described cover plate (2) is provided with the handle being correspondingly arranged respectively with handle installation portion (11) and operating mechanism installation portion (12) Limiting section (21) and operating mechanism limiting section (22), described connector (4) are located at handle limiting section (21) and operating mechanism limit It is oppositely arranged between position portion (22) and with location division (3), described positioning hole (6) is located at the cover sidewall of cover plate (2) drift angle (23) inner side is simultaneously correspondingly arranged at side of the operating mechanism limiting section (22) away from connector (4) with locating shaft (5).

3. the casing mounting structure of miniature circuit breaker according to claim 1, it is characterised in that：Described location division (3) Including boss (31), inclined-plane (32), front side groove (33) and sidewall channels (34), described front side groove (33) is with sidewall channels (34) in head Tail connects and is set respectively along the edge of base (1) and base side wall (13) and will be arranged on the inclined-plane (32) of boss (31) end Expose.

4. the casing mounting structure of miniature circuit breaker according to claim 3, it is characterised in that：The one of the boss (31) Side is fixedly mounted on the base on the inner surface of base (1) and between handle installation portion (11) and operating mechanism installation portion (12) Side wall (13) is disposed adjacent, and another lateral cover plate (2) side extends and is oppositely arranged with connector (4), described inclined-plane (32) Positioned at boss (31) close to the end of base side wall (13) one end and with boss (31) is integrally formed sets the end of boss (31) Portion is covered, and described front side groove (33) is arranged on base side wall (13) and positioned at inclined-plane (32) close to the upper of base (1) one end Side.

5. the casing mounting structure of miniature circuit breaker according to claim 3, it is characterised in that：Described sidewall channels (34) It is arranged on base side wall (13) and is located at the top of inclined-plane (32) close operating mechanism installation portion (12) side, and front side groove (33) both sides are connected with the retaining wall (113) of handle installation portion (11) and one end of sidewall channels (34) respectively, sidewall channels (34) The other end extend to base side wall (13) to the side where cover plate (2) along inclined-plane (32) and the section of base side wall (13) End.

6. the casing mounting structure of miniature circuit breaker according to claim 1, it is characterised in that：Described connector (4) Including being arranged on the front side convex tendon (41) of remote cover plate (2) one end of connector (4) and being limited positioned at connector (4) close to operating mechanism Position portion (22) side and the side wall convex tendon (42) set along the edge of connector (4), described front side convex tendon (41) and location division (3) front side groove (33) is engaged, and described side wall convex tendon (42) is engaged with the sidewall channels (34) of location division (3).

7. the casing mounting structure of miniature circuit breaker according to claim 6, it is characterised in that：Described sidewall channels (34) For the arc groove being arranged on base side wall (13), side wall convex tendon (42) is the fan-shaped convex tendon being engaged with the arc groove.

8. the casing mounting structure of miniature circuit breaker according to claim 3, it is characterised in that：One end of base (1) is set There is handle installation portion (11), described cover plate (2) is provided with the handle limiting section (21) being correspondingly arranged with handle installation portion (11), Retaining convex rib (14), described limit convex are additionally provided with base side wall (13) between handle installation portion (11) and inclined-plane (32) The surface of muscle (14) vertical feet side wall (13) stretches out, and described cover sidewall (23) is spacing in connector (4) and handle Bent inwards between the opening (211) in portion (21) so as to form spacing half groove (24).

9. the casing mounting structure of miniature circuit breaker according to claim 2, it is characterised in that：Described handle installation portion (11) installation base plate (111), fixing axle (112) and retaining wall (113) are included, described installation base plate (111) is located at base (1) One end is simultaneously correspondingly arranged with the spacing substrate (212) of handle limiting section (21), and described fixing axle (112) is fixedly mounted on installation The middle part of substrate (111) is simultaneously engaged with the fixed shaft hole (213) of handle limiting section (21), and described retaining wall (113) is positioned at peace It is oppositely arranged on the part that the prominent base (1) of dress substrate (111) is set and with the opening (211) of handle limiting section (21), and The both sides of retaining wall (113) are connected with base side wall (13).

10. the casing mounting structure of miniature circuit breaker according to claim 2, it is characterised in that：Described operating mechanism Installation portion (12) includes mounting groove (121), baffle plate (122), lever mounting hole (123) and type groove (124), described mounting groove (121) it is located at one end of base (1) and is disposed adjacent with base side wall (13), described baffle plate (122) is arranged on mounting groove (121) side is simultaneously arranged on the lower section of mounting groove (121) positioned at the lower section of locating shaft (5), described lever mounting hole (123) And it is correspondingly arranged with the lever spacing hole (222) of operating mechanism limiting section (22), described type groove (124) and lever mounting hole (123) it is arranged at intervals and is correspondingly arranged with the connecting hole (221) of operating mechanism limiting section (22) side by side.