WO2018079928A1 - Structure of heating coil assembled and installed in glow plug - Google Patents

Abstract

The present invention relates to a structure of a heating coil assembled and installed to a glow plug. To this end, the present invention comprises a housing extending in the axial direction to the glow plug, a heat-generating tube coupled to a lower portion of the housing, and a cap fixedly mounted on the upper portion of the housing, wherein the cap is provided with a (+) terminal and a (-) terminal which enter into the heat-generating tube, and a heating coil is installed in contact with the (+) terminal and the (-) terminal, wherein the heating coil protrudes and positions, to the outside of the heating coil, a coil winding part forming the outer shape and a coil wire part located at the center of the inside of the coil winding part so as to secure the weldability and the insulation gap and enable a non-directional assembly.

Description

Heating coil structure assembled to glow plug

Embodiment of the present invention relates to the structure of the heating coil is assembled to the glow plug, more specifically to ensure the insulation gap on the glow plug parts to prevent short circuits to ensure the durability of the thermostat mounted to the heater and glow plug This greatly improves the quality and reliability of the product, thereby satisfying the various needs (users) of consumers, users, so that they can plant good images.

As is well known, glow plugs are used to preheat internal combustion engines or as actuators in thermostats.

First-generation coolant regulator thermostats are critical components for preventing engine heating, and are automotive components that have a close relationship with fuel efficiency.

Until now, the thermostat is passively expanded and contracted according to the coolant temperature by the wax (heat-expanded material) embedded in the thermostat, which serves to open and close the valve.

However, since the technology of glow plugs has been developed many years ago, a technology is developed to prevent the heating of the engine by controlling the opening and closing of the thermostat valve by expanding and reducing the wax by artificially supplying thermal energy to the wax by installing it on the thermostat. have.

On the other hand, the second generation glow plug for thermostat was designed and developed as a system in which the positive electrode is connected to the ECU (+) terminal and the negative electrode is connected to the thermostat housing, but the ECU (-) terminal and the thermostat housing ( -) It was confirmed that there was a problem in control because of potential difference between terminals.

Due to the noise generated by the negative terminal potential difference, the ECU control is interrupted, and the specification that connects the thermostat glow plug (-) terminal to the ECU (-) terminal has to be developed.

Meanwhile, the 2.5th generation glow plugs for thermostats are developed in a 2-pin structure with both the (+) and (-) terminals insulated from the thermostat housing.

However, there are many problems in manufacturing the product and securing the insulation.

In particular, the 2.5-generation glow plug 1 is restricted to a 2-pin terminal size due to its narrow internal space (less than 0.5 mm insulated gap) and has a risk of short circuit depending on the coil winding shape.

That is, as shown in Figure 1 (a) (b) (c) the housing 30 extending in the axial direction and the heating tube 20 is coupled to the lower portion of the housing and the cap 40 is fixed to the upper end of the housing ) Is provided.

In addition, the cap 40 is assembled with the (+) terminal 50 and the (-) terminal 60 entering the heating tube 20, the (+) terminal 50 and the (-) terminal 60 The heating coil 100 is installed in contact with each other, but between the (+) terminal 50 and the (-) terminal 60 (the slanted portion of the terminal and the + terminal are less than 0.5 mm). As a result, it is difficult to secure the insulation space of the -terminal bent portion of the terminal), and the short circuit defect is likely to occur in the field in consideration of the manufacturing process distribution.

In addition, the 2.5-generation glow plug has a (-) terminal lead wire assembled with the lower end of the coil. In this process, the wire diameter of the lead wire is thick, which makes it difficult to maintain insulation between terminals.

And the (-) terminal lead wire is difficult to reduce the outer diameter to the thickness of the wire diameter to minimize the thermal resistance of the supplied current.

In order to solve the above problems, the following prior art documents have been developed, but still a large problem has not been solved at one time with the problems of the prior art.

[Preceding technical literature]

(Patent Document 1) Korean Patent Publication No. 1665525 (2016. 10. 06) has been registered.

(Patent Document 2) Korean Patent Publication No. 1524253 (2015. 05. 22) has been registered.

The present invention has been made in order to solve the above problems of the prior art, the first object is that the heating coil to be installed in the glow plug is provided with a coil winding portion and a coil wire portion, according to the technical configuration described above The second object of the present invention is to ensure the insulation gap on the glow plug parts to prevent short circuits to ensure the durability of the thermostat mounted on the heater and the glow plug, and the third object is to coil coil and coil wire The protruding position outside one side of the heating coil ensures weldability and insulation gap. The fourth purpose is to eliminate the need for a separate insulation coating by securing an insulation gap of 0.8 mm or more. The non-directional assembly of the terminal enables easy process and management, and the sixth purpose is to As it greatly improves quality and reliability, it provides a heating coil structure that is assembled to a glow plug that can satisfy a variety of needs (users) of users.

In order to achieve the above object, the present invention provides a housing that extends in an axial direction to a glow plug, a heating tube coupled to a lower portion of the housing, a cap fixedly installed at an upper end of the housing, and a positive terminal entering the heating tube in the cap. In the (-) terminal is assembled, the heating coil is installed in contact with the (+) terminal and (-) terminal,

The heating coil,

In order to secure weldability and insulation distance and to enable non-directional assembly, the coil windings forming the outline and the coil wires located in the inner center of the coil windings are projected to the outside of the heating coil. It provides the structure of the heating coil.

In addition, the present invention is a housing that extends in the axial direction to the glow plug and the heating tube coupled to the lower portion of the housing and the cap fixedly installed on the upper end of the housing and the (+) terminal and (-) terminal to enter into the heating tube inside the cap Is assembled, and the heating coil is installed in contact with the (+) and (-) terminals,

The heating coil,

Heating assembled to the glow plug characterized in that the coil windings forming the outer shape and the coil wires located outside the coil windings are projected to the outside of the heating coil in order to secure weldability and insulation distance and enable non-directional assembly. Provide the structure of the coil.

As described in detail above, the present invention is to provide a heating coil to be installed in the glow plug is provided with a coil winding portion and a coil wire portion.

The present invention by the above technical configuration is to ensure the insulation gap on the glow plug components to prevent short circuit to ensure the durability of the thermostat mounted on the heater and the glow plug.

In addition, the present invention is to ensure the weldability and the insulation interval by placing the coil winding portion and the coil wire portion protruding out of one side of the heating coil.

In addition, the present invention is to avoid the need for a separate insulating coating due to the insulation interval of more than 0.8mm.

In addition, the present invention is to allow a non-directional assembly of the (-) terminal to simplify the process and management.

The present invention greatly improves the quality and reliability of the product due to the above-described effects, which is a very useful invention that can be used to plant a good image by satisfying various needs (needs) of consumers.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention for achieving this effect are as follows.

1 (a) is a front view of a conventional heating coil,

        (b) is a state diagram in which a terminal is coupled to a conventional heating coil,

        (c) is a state figure which assembled and installed the heating coil with the glow plug conventionally.

2 is a first embodiment of the present invention.

        (a) is a perspective view of a heating coil applied to the present invention,

        (b) is a front view of the heating coil applied to the present invention,

        (c) is a heating coil is applied to the glow plug

           State diagram.

3 is a second embodiment of the present invention.

        (a) is a perspective view of a heating coil applied to the present invention,

        (b) is a front view of the heating coil applied to the present invention,

        (c) is a heating coil is applied to the glow plug

           State diagram.

<Explanation of symbols for the main parts of the drawings>

1: glow plug

10a, 10b, 100: heating coil

20: heating tube

30: housing

40: cap

50: (+) terminal

60: (-) terminal

The structure of the heating coil assembled to the glow plug applied to the present invention is configured as shown in Figs.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The following terms are terms set in consideration of functions in the present invention, which may vary depending on the intention or custom of the producer, and their definitions should be made based on the contents throughout the specification.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to those shown in the drawings.

First, the configuration of the first embodiment of the present invention is configured as follows. In other words,

Example 1 (FIGS. 2A, B, C)

The housing 30 extending in the axial direction to the glow plug 1 and the heating tube 20 coupled to the lower portion of the housing 30 and the cap 40 and the cap 40 fixed to the upper end of the housing 30 ) Is assembled to the (+) terminal 50 and the (-) terminal 60 to enter the heating tube 20, the (+) terminal 50 and the (-) terminal 60 is a heating coil ( 10a) is installed in contact,

The heating coil 10a,

In order to secure weldability and insulation distance and to enable non-directional assembly, the coil winding 11 and the coil wire 12 positioned at the inner center of the coil winding 11 are formed outside of the heating coil 10a. It provides a structure of the heating coil is assembled to the glow plug, characterized in that the protruding position in the.

On the other hand, the configuration of the second embodiment of the present invention is configured as follows. In other words,

(Example 2) (FIGS. 3A, B, C)

The housing 30 extending in the axial direction to the glow plug 1 and the heating tube 20 coupled to the lower portion of the housing 30 and the cap 40 and the cap 40 fixed to the upper end of the housing 30 ) Is assembled to the (+) terminal 50 and the (-) terminal 60 to enter the heating tube 20, the (+) terminal 50 and the (-) terminal 60 is a heating coil ( 10b) is installed in contact,

The heating coil 10b,

In order to secure weldability and insulation distance and to enable non-directional assembly, the coil winding 15 and the coil wire 16 positioned outside the coil winding 15 are formed outside the heating coil 10b. It provides a structure of the heating coil is assembled to the glow plug, characterized in that the protruding position.

In particular, it is preferable to form the starting point and the ending point of the heating coils 10a and 10b applied to the present invention in the same position on one side instead of both sides.

And the insulation gap applied to the present invention is the heating coil (10a) (10b) and the coil wire part 12, 16 when the (+) terminal 50 and (-) terminal 60 is assembled heating coil (10a) Protruding to the outside of the (10b) and (-) terminal 60 is in contact with each other due to the insulation gap is secured by more than 0.8mm to prevent a separate insulation coating.

In addition, while the coil wire part 12 is positioned in the inner center of the heating coil 10a applied to the first embodiment of the present invention, the coil wire part 12 is formed by winding the coil winding part 11 integrally,

Alternatively, the coil wire part 12 and the coil winding part 11 are assembled and installed by mutual welding.

On the other hand, the heating coil 10b applied to the second embodiment of the present invention, while the coil wire portion 16 is positioned outside the coil winding portion 15, the starting point of the coil winding portion 15 and the coil wire portion ( Of course, it is possible to position the end point of 16) in the same line position on one side.

On the other hand, the present invention may be variously modified and may take various forms in applying the above configuration.

And it is to be understood that the invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood that.

Referring to the operation and effect of the structure of the heating coil is installed in the glow plug of the present invention configured as described above are as follows.

First, the present invention is to ensure the insulation gap on the glow plug component to prevent short circuit to ensure the durability of the thermostat mounted on the heater and the glow plug.

2 applied to the present invention for this purpose is a first embodiment of the present invention.

(a) is a perspective view of the heating coil 10a applied to the present invention,

(b) is a front view of the heating coil 10b applied to the present invention,

(c) is a state diagram in which the heating coil 10a applied to the present invention is assembled to the glow plug 1.

In the present invention described above, the lower end of the (+) terminal 50 is in contact with one end of the coil wire part 12, and the lower end of the (-) terminal 60 is in contact with one end of the coil winding part 11. By this configuration, the present invention is to facilitate the weldability by placing the coil winding portion 11 and the coil wire portion 12 protruding outside one side of the heating coil (10a).

And the present invention is to avoid the need for a separate insulation coating, as in the prior art, between the (+) terminal 50 and the (-) terminal 60 to ensure an insulation gap of 0.8mm or more, and also the (-) terminal The non-directional assembly of the (60) is possible to simplify the process and management.

On the other hand, Figure 3 is a second embodiment of the present invention,

(a) is a perspective view of the heating coil 10b applied to the present invention,

(b) is a front view of the heating coil 10b applied to the present invention,

(c) is a state diagram in which the heating coil 10b applied to the present invention is assembled to the glow plug 1.

In the present invention described above, the lower end of the (+) terminal 50 is in contact with one end of the coil wire part 16, and the lower end of the (-) terminal 60 is in contact with one end of the coil winding 15. By this configuration, the present invention is to facilitate the weldability by placing the coil winding portion 15 and the coil wire portion 16 protruding out of one side of the heating coil (10b).

And the present invention is to avoid the need for a separate insulation coating, as in the prior art, between the (+) terminal 50 and the (-) terminal 60 to ensure an insulation gap of 0.8mm or more, and also the (-) terminal The non-directional assembly of the (60) is possible to simplify the process and management.

The technical idea of the structure of the heating coil assembled to the glow plug of the present invention is actually capable of repeating the same result, and in particular, by implementing the present invention, it is possible to promote the technological development and contribute to the industrial development, which is worth protecting. have.

Claims (6)

A housing that extends in the axial direction to the glow plug, a heating tube coupled to the lower portion of the housing, a cap fixedly installed on the upper end of the housing, and the cap is assembled with a positive terminal and a negative terminal entering the heating tube. In the heating coil is installed in contact with the (+) terminal and (-) terminal, The heating coil, In order to secure weldability and insulation distance and to enable non-directional assembly, the coil windings forming the outline and the coil wires located in the inner center of the coil windings are projected to the outside of the heating coil. Heating coil structure. A housing that extends in the axial direction to the glow plug, a heating tube coupled to the lower portion of the housing, a cap fixedly installed on the upper end of the housing, and the cap is assembled with a positive terminal and a negative terminal entering the heating tube. In the heating coil is installed in contact with the (+) terminal and (-) terminal, The heating coil, Heating assembled to the glow plug characterized in that the coil windings forming the outer shape and the coil wires located outside the coil windings are projected to the outside of the heating coil in order to secure weldability and insulation distance and enable non-directional assembly. Structure of the coil. The method according to claim 1 or 2, The heating coil assembly is installed in the glow plug, characterized in that the starting point and the end point of the heating coil is formed at the same position of one side instead of both sides. The method according to claim 1 or 2, The insulation gap is secured, When assembling heating coil, (+) terminal, and (-) terminal, coil wire part protrudes out of heating coil and contacts with (-) terminal, so the insulation gap is secured more than 0.8mm to prevent separate insulation coating. A structure of a heating coil which is assembled to a glow plug. The method according to claim 1, Position the coil wire portion in the inner center of the heating coil, the coil wire portion is formed by winding integrally with the coil winding portion, Or a structure of a heating coil assembled to a glow plug, wherein the coil wire part and the coil winding part are assembled and installed by mutual welding. The method according to claim 2, The heating coil, A heating coil structure assembled to a glow plug, wherein the coil wire part is positioned outside the coil winding part, and the start point of the coil winding part and the end point of the coil wire part are located at the same linear position on one side.

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