CN205645425U - Electronic expansion valve and coil skeleton thereof - Google Patents

Abstract

The utility model discloses an electronic expansion valve and coil skeleton thereof, including skeleton (1), enameled wire winding (2) and contact pin (3), contact pin (3) install in septum holder (4) of skeleton (1), the end of a thread winding of enameled wire winding (2) is on contact pin hook (5), respectively septum holder (4) are equipped with the support the end of a thread is in order to avoid its unsettled line position excessively. This coil skeleton passes through to optimize the structure of skeleton, and it is unsettled to make the enameled wire can not appear in the winding process, and it is bad to guarantee can not produce damage or even stub etc. To the enameled wire owing to the impact that injection pressure, temperature were brought at the in -process of moulding plastics to reduce the process defective rate of moulding plastics.

Description

A kind of electric expansion valve and coil rack thereof

Technical field

This utility model relates to motor-operated control valve technical field, particularly air-conditioning, compressor, fridge, In the systems such as water heater, for controlling the coil rack of the electric expansion valve of gas or fluid flow.This reality With the novel electric expansion valve further relating to be provided with described coil rack.

Background technology

At present, in coil of electronic expansion valve, enamel-covered wire is mainly wound on by the end of a thread with the connection conducting of contact pin Soldering realization is carried out after clubfoot of contact pin.

Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 1 is a kind of typical coil of electronic expansion valve skeleton Structural representation；Fig. 2 is that the end of a thread and outer the end of a thread curl the partial enlargement being wound on clubfoot of contact pin in enamel-covered wire Figure；Fig. 3 is interior the end of a thread and outer the end of a thread side view of being connected unsettled with contact pin；Fig. 4 is hanging part in Fig. 3 Partial enlarged drawing.

As it can be seen, interior the end of a thread 21 of enamel-covered wire is wrapped on clubfoot of contact pin 5, after entering hanging wire groove 6, Starting to be wound on skeleton 1, outer the end of a thread 22, again by hanging wire groove 6, is wrapped on clubfoot of contact pin 5 Carry out soldering conducting.

In enamel-covered wire the end of a thread 21 clubfoot of contact pin 5 coiling laggard enter skeleton grooves section and outer the end of a thread 22 draw coiling At clubfoot of contact pin 5, being all unsettled connection, easily because skeleton has overlap to occur, enamel-covered wire broken string and paint film break Damage；Simultaneously because enamel-covered wire is unsettled, be not against a little, encapsulating time by material colloidal sol with certain speed, one Constant-pressure impacts, it is also possible to produce enamel-covered wire short-term or paint film damaged, thus causes coil open circuit, short Road, causes insulation electrical bad.

Therefore, how to reduce short circuit, open circuit process fraction defective during coil injection molding, improving product quality, It is those skilled in the art's technical issues that need to address.

Utility model content

The purpose of this utility model is to provide a kind of coil of electronic expansion valve skeleton.This coil rack is by excellent Change the structure of skeleton, make enamel-covered wire not have in winding process unsettled, it is ensured that in injection moulding process not The impact that can bring due to injection pressure, temperature produces to enamel-covered wire that to damage even short-term etc. bad, thus Reduce injection moulding process fraction defective.

Another object of the present utility model is to provide a kind of electric expansion valve being provided with described coil rack.

For achieving the above object, this utility model provides a kind of coil of electronic expansion valve skeleton, including skeleton, Enamel-covered wire winding and contact pin, described contact pin is installed on the Plug pin patch bay of described skeleton, described enamel-covered wire winding The end of a thread is wrapped on the clubfoot of described contact pin, and each described Plug pin patch bay is provided with the described the end of a thread of support to avoid it to hang Empty crosses line position.

Preferably, described line position of crossing is included on described Plug pin patch bay along crossing the passing channel that thread path is formed Or guiding groove.

Preferably, described passing channel or guiding groove are positioned at the side of described Plug pin patch bay.

Preferably, described passing channel or guiding groove are oblique to clubfoot direction from the hanging wire groove of described Plug pin patch bay To extension.

Preferably, described line position of crossing includes protective bulkhead, and it is positioned on thread path in crossing of described Plug pin patch bay The inner side of described the end of a thread.

Preferably, described line position of crossing includes inclined-plane, and it is positioned at institute in crossing of described Plug pin patch bay on thread path State the top of the end of a thread.

Preferably, described line position of crossing includes protective bulkhead and inclined-plane, and both are respectively in the mistake of described Plug pin patch bay Inner side and the top of described the end of a thread it is positioned on thread path.

Preferably, described protective bulkhead and inclined-plane are formed and guide described the end of a thread carry out the passing channel of cabling or draw Guide groove.

Preferably, described protective bulkhead and inclined-plane are positioned at the bending angular zone of described Plug pin patch bay.

For realizing above-mentioned another object, this utility model also provides for a kind of electric expansion valve, including valve body and Being located at the coil rack of described valve body, described coil rack is the electric expansion valve line described in any of the above-described item Ring framework.

This utility model has made further improvement on the basis of existing technology, and its Plug pin patch bay is provided with support Interior the end of a thread and outer the end of a thread are to avoid its unsettled line position excessively.So, interior the end of a thread of enamel-covered wire and outer the end of a thread After by line position is connected with the clubfoot of contact pin excessively, the end of a thread position of enamel-covered wire can be close to contact pin completely Seat, does not has hanging part, solves the problem that enamel-covered wire is unsettled, when carrying out pressure colloidal sol and being plastic, and mistake Line position can be good at protective paint envelope curve, and the impact making enamel-covered wire bear pressure colloidal sol greatly reduces, from And reduce the broken string fraction defective in injection moulding process, improving product quality.

Electric expansion valve provided by the utility model is provided with described coil rack, owing to this coil rack has Have above-mentioned technique effect, then the electric expansion valve being provided with this coil rack also should have corresponding technique effect.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of typical coil of electronic expansion valve skeleton；

Fig. 2 is that the end of a thread and outer the end of a thread curl the partial enlarged drawing being wound on clubfoot of contact pin in enamel-covered wire；

Fig. 3 is interior the end of a thread and outer the end of a thread side view of being connected unsettled with contact pin；

Fig. 4 is the partial enlarged drawing of hanging part in Fig. 3；

Fig. 5 is the knot of a kind of detailed description of the invention of this utility model provided coil of electronic expansion valve skeleton Structure schematic diagram；

Fig. 6 is the partial enlarged drawing of Plug pin patch bay in Fig. 5；

Fig. 7 is that the end of a thread and outer the end of a thread curl the partial schematic diagram being wound on clubfoot of contact pin in enamel-covered wire；

Fig. 8 is that the end of a thread and outer the end of a thread curl the side view being wound on clubfoot of contact pin in enamel-covered wire.

In figure:

1. the end of a thread 22. outer the end of a thread 3. contact pin 4. Plug pin patch bay in skeleton 2. enamel-covered wire winding 21. 5. clubfoot of contact pin 6. hanging wire groove 7. protective bulkhead 8. inclined-plane

Detailed description of the invention

In order to make those skilled in the art be more fully understood that this utility model scheme, below in conjunction with the accompanying drawings and The utility model is described in further detail for detailed description of the invention.

Refer to Fig. 5, Fig. 6, Fig. 5 is the one of this utility model provided coil of electronic expansion valve skeleton The structural representation of detailed description of the invention；Fig. 6 is the partial enlarged drawing of Plug pin patch bay in Fig. 5.

In a kind of specific embodiment, the coil of electronic expansion valve skeleton that this utility model provides is mainly by bone Frame 1, enamel-covered wire winding 2, contact pin 3 and Plug pin patch bay 4 etc. form.

Skeleton 1 is substantially in annular, and top is fixed with one group of transversely arranged Plug pin patch bay 4 amounting to three, Three contact pins 3 are separately mounted on corresponding Plug pin patch bay 4, coiling enamel-covered wire in the groove section on its excircle Winding 2, interior the end of a thread 21 of enamel-covered wire winding 2 is wrapped on clubfoot of contact pin 5, after entering hanging wire groove 6, Starting to be wound on skeleton 1, outer the end of a thread 22, again by hanging wire groove 6, is wrapped on clubfoot of contact pin 5 Carry out soldering conducting.

Due to Plug pin patch bay 4 on side in inverted " L " shape, there is a right-angle bending region, because of Interior the end of a thread 21 of this enamel-covered wire and outer the end of a thread 22, through this region, will be in vacant state, lead Induced coil open circuit, short circuit, cause insulation electrical bad, affect product quality.

To this, this utility model is provided with the end of a thread 21 and outer the end of a thread in support enamel-covered wire on each Plug pin patch bay 4 22 to avoid its unsettled line position excessively.

Specifically, this crosses line position by protective bulkhead 7 and inclined-plane 8 shape being positioned at Plug pin patch bay 4 bending angular zone Becoming, wherein, protective bulkhead 7 is longitudinal floor, is positioned at interior lines 21 crossing of Plug pin patch bay 4 on thread path With the inner side of outer the end of a thread 22, the end of a thread 21 and outer the end of a thread 22 in medial support, guiding, inclined-plane 8 is being inserted Crossing of needle stand 4 is positioned at interior lines 21 and the top of outer the end of a thread 22 on thread path, supported from above, guiding Interior the end of a thread 21 and outer the end of a thread 22, it is common that inclined-plane 8 is generally perpendicular to protective bulkhead 7, protective bulkhead 7 and inclined-plane 8 Form the end of a thread 21 and outer the end of a thread 22 in guiding and carry out passing channel or the guiding groove of cabling.

The contact pin 3 of the leftmost side shown in figure is used for being wound around outer the end of a thread 22, therefore only partially on its Plug pin patch bay 4 To in inner side while being provided with protective bulkhead 7 and inclined-plane 8, the contact pin 3 of the rightmost side is used for being wound around interior the end of a thread 21, Therefore on its Plug pin patch bay 4 only be partial to inner side while being provided with protective bulkhead 7 and inclined-plane 8, middle inserts Pin 3 is for simultaneously wound interior the end of a thread 21 and outer the end of a thread 22, and therefore the both sides of its Plug pin patch bay 4 are with symmetry Mode is simultaneously provided with protective bulkhead 7 and inclined-plane 8.

Please also refer to Fig. 7, Fig. 8, Fig. 7 is that the end of a thread and outer the end of a thread curl and be wound on clubfoot of contact pin in enamel-covered wire On partial schematic diagram；Fig. 8 is that the end of a thread and outer the end of a thread curl the side-looking being wound on clubfoot of contact pin in enamel-covered wire Figure.

As it can be seen, the passing channel formed by protective bulkhead 7 and inclined-plane 8 or guiding groove and hanging wire groove 6 connections, and extend obliquely out to clubfoot of contact pin direction from hanging wire groove 6, interior the end of a thread 21 of enamel-covered wire is with outer The end of a thread 22 after being connected with clubfoot of contact pin 5 by passing channel or guiding groove, the end of a thread position energy of enamel-covered wire Enough it is close to Plug pin patch bay 4 completely, there is no hanging part, solve the problem that enamel-covered wire is unsettled, pressing When power colloidal sol is plastic, crosses line position and can be good at protective paint envelope curve, make enamel-covered wire bear pressure colloidal sol Impact greatly reduces, thus reduces the broken string fraction defective in injection moulding process, improving product quality.

Above-mentioned line position of crossing can also simplify further, such as, save inclined-plane 8 only reservation protection wall 7, or Person saves protective bulkhead 7 and only retains inclined-plane 8, can effectively support, guide interior the end of a thread 21 of enamel-covered wire equally Cabling is carried out with outer the end of a thread 22.

Above-described embodiment is only preferred version of the present utility model, is specifically not limited thereto, basis at this On can make according to actual needs having and adjust targetedly, thus obtain different embodiments.Such as, In addition to forming passing channel or guiding groove in the way of protective bulkhead 7 and inclined-plane 8, cross line position also Can be directly to cross, on edge, the side of Plug pin patch bay 4, passing channel or the guiding groove that thread path is formed, this crosses line Passage or guiding groove connect with hanging wire groove 6, extend obliquely out to clubfoot direction from hanging wire groove 6, disconnected On face can the various different shapes such as " U "-shaped, " V " shape or " C " shape, etc..Due to can The mode that can realize is more, illustrates the most one by one.

Except above-mentioned coil rack, this utility model also provides for a kind of electric expansion valve, and it is in air-conditioning, pressure In the systems such as contracting machine, fridge, water heater, be used for controlling gas or fluid flow, mainly by valve body and Being located at the coil rack composition of valve body, wherein coil rack is coil of electronic expansion valve skeleton mentioned above, Remaining structure refer to prior art, repeats no more herein.

Above electric expansion valve provided by the utility model and coil rack thereof are described in detail. Principle of the present utility model and embodiment are set forth by specific case used herein, above reality The explanation executing example is only intended to help to understand core concept of the present utility model.It should be pointed out that, for this skill For the those of ordinary skill in art field, on the premise of without departing from this utility model principle, it is also possible to right This utility model carries out some improvement and modification, and these improve and modification also falls into this utility model right and wants In the protection domain asked.

Claims (10)

1. a coil of electronic expansion valve skeleton, including skeleton (1), enamel-covered wire winding (2) and contact pin (3), Described contact pin (3) is installed on the Plug pin patch bay (4) of described skeleton (1), described enamel-covered wire winding (2) The end of a thread is wrapped on clubfoot of contact pin (5), it is characterised in that it is described that each described Plug pin patch bay (4) is provided with support The end of a thread is to avoid its unsettled line position excessively.

Coil of electronic expansion valve skeleton the most according to claim 1, it is characterised in that described line excessively It is upper along crossing passing channel or the guiding groove that thread path is formed that position is included in described Plug pin patch bay (4).

Coil of electronic expansion valve skeleton the most according to claim 2, it is characterised in that described line excessively Passage or guiding groove are positioned at the side of described Plug pin patch bay (4).

Coil of electronic expansion valve skeleton the most according to claim 3, it is characterised in that described line excessively Passage or guiding groove extend obliquely out to clubfoot of contact pin direction from the hanging wire groove (6) of described Plug pin patch bay (4).

Coil of electronic expansion valve skeleton the most according to claim 1, it is characterised in that described line excessively Position includes protective bulkhead (7), and it is positioned at described the end of a thread in crossing of described Plug pin patch bay (4) on thread path Side.

Coil of electronic expansion valve skeleton the most according to claim 1, it is characterised in that described line excessively Position includes inclined-plane (8), and it is positioned at the top of described the end of a thread on the thread path excessively of described Plug pin patch bay (4).

Coil of electronic expansion valve skeleton the most according to claim 1, it is characterised in that described line excessively Position includes protective bulkhead (7) and inclined-plane (8), and both are respectively on the thread path excessively of described Plug pin patch bay (4) It is positioned at inner side and the top of described the end of a thread.

Coil of electronic expansion valve skeleton the most according to claim 7, it is characterised in that described protection Wall (7) and inclined-plane (8) form passing channel or the guiding groove guiding described the end of a thread to carry out cabling.

Coil of electronic expansion valve skeleton the most according to claim 8, it is characterised in that described protection Wall (7) and inclined-plane (8) are positioned at the bending angular zone of described Plug pin patch bay (4).

10. an electric expansion valve, including valve body and the coil rack being located at described valve body, it is characterised in that Described coil rack is the coil of electronic expansion valve skeleton described in any one of the claims 1 to 9.