KR200223473Y1 - Gear tooth sensor for automobile - Google Patents

Abstract

The present invention relates to an automotive gear tooth sensor, and to provide an automotive gear tooth sensor capable of directly welding an electronic device to a terminal of a bobbin without the need for a PCB assembly and an epoxy injection process. The present invention, a contact plate, a first contact point protrudes to one side of the contact plate, a second contact point protrudes to the other side of the contact plate, a plurality of bridges and the contact connecting the contact plates A terminal forming an extension at one end of the plate; The terminals are injection molded together to form a first contact hole and a second contact hole, and a third contact hole is formed in two places so that a third contact point is formed on the surfaces of the progressive plates, and the third contact holes are formed. A bobbin to form a settling ball between, and to form an accommodation space and a fitting hole at one end thereof; A hall sensor inserted into the storage space and having a lead connected to the first contact point and the second contact point; An electronic device comprising a body mounted on the settled ball and a leg protruding from the body and soldered to the third contact point; A cable spliced to said extension; And an over-molding part which is injection molded to the assembly of the terminal, the bobbin, the hall sensor, the electronic element, and the cable, and integrally injection-molks the flange and the connector.

Description

GEAR TOOTH SENSOR FOR AUTOMOBILE}

The present invention relates to a gear tooth sensor for an automobile, and in particular, an automobile which is integrally injection-molded with an overmolded part to the outside of an assembly of a terminal, a hall sensor, an electronic element, and a cable in a bobbin during a molding operation of the gear tooth sensor. It relates to a gear tooth sensor.

In general, a gear-tooth sensor for an automobile is grounded to a crank shaft or cam and axle of an engine to detect its rotation state, and then the detected signal is input to an electronic controller to output a control signal.

Conventional automotive gear tooth sensor has been filed by the present applicant with the application No. 1999-47935 (designated name: automotive gear tooth sensor) as of November 01, 1999, the approximate structure is shown in Figures 1 to 4b Is disclosed. As shown therein, the gear tooth sensor 100 includes a cup 110 and a bobbin 120. The gear tooth sensor 100 further includes a bobbin assembly 130. The bobbin assembly 130 is provided with the PC assembly 140 and the hall sensor 150. The PCB assembly 140 is provided with a PCB substrate 142 and a plurality of electronic devices 144.

The gear tooth sensor 100 is assembled in the following order.

First, the cup 110 is formed with a hollow 112 having one side opened therein (see FIG. 1).

In addition, an accommodation space 122 is formed at one end of the bobbin 120, and a vertical first terminal 124 and a horizontal second terminal 126 protrude from the other end thereof (see FIG. 2A).

In addition, the bobbin assembly 130 includes a PCB assembly 140 and a hall sensor 150 in the bobbin 120. A PCB substrate 142 and a plurality of electronic devices 144 are included. One or more leads 152 protrude forward in the hall sensor 150 (see FIG. 2B).

The bobbin assembly 130 is installed in the hollow 112 of the cup 110. At this time, the cable 162 is connected to the second terminal 126 of the bobbin assembly 130 by the splice 160. Subsequently, epoxy 112 is injected into the hollow 112 of the cup 110 to seal the bobbin assembly 130 therein (see FIG. 3).

After the epoxy injection process, the connector 164 and the flange 166 are integrally overmolded on the opened portion of the cup 110. Bush 168 is injection-molded in the flange 166 to complete the assembly work of the gear tooth sensor 100 (FIGS. 4A and 4B).

However, the conventional gear tooth sensor 100 as described above should include not only the cup 110 and the bobbin 120, but also the bobbin assembly 130 provided with the PC assembly 140 and the hall sensor 150. The number had increased. Furthermore, the PCB assembly 140 is composed of the PCB substrate 142 and the plurality of electronic elements 144, which adds to the burden on the number of parts. In addition, a process of filling and curing the epoxy as a whole in the hollow 112 of the cup 110 was added, such that workability was lowered.

The present invention was devised to overcome the above-mentioned conventional problems, and an object of the present invention is to provide a gear tooth sensor for an automobile which can directly weld an electronic device to a terminal of a bobbin without the need for a PCB assembly and an epoxy injection process. It is.

As an example of a gear tooth sensor for an automobile according to the present invention for achieving the object of the present invention, a pair of contact plates, a first contact protrudes to one side of the contact plate, the other of the contact plate A terminal protruding from the second contact to one side, the terminal forming one or more bridges for connecting the contact plates in parallel with each other and an extension formed by vertically bending one end of the contact plate; The terminal is injection molded together to cut the bridges and form the first contact hole of the first contact point and the second contact hole of the second contact point to be visible from the top surface, and a third contact point to the surface of the progressive plates. A bobbin formed in two places to form each of the third contact holes, forming a settling hole between the third contact holes, and one end of the receiving space and a fitting hole in succession; A hall sensor that is inserted into the storage space and the lead of the tip is inserted through the fitting hole of the bobbin and connected to the first contact point and the second contact point; An electronic device comprising a body mounted on the settled ball and a leg protruding to one side and the other side of the body and soldered to the third contact point; A cable spliced to said extension; And an overmolded part for injection molding the terminal, the bobbin, the hall sensor, the electronic element, and the assembly of the cable to form an outer shape, and integrally injection molding the flange and the connector on one side and the other side.

1 is a cross-sectional view of a cup that is a component of a conventional gear tooth sensor for a vehicle;

2A is a side view of a bobbin that is a component of a conventional gear tooth sensor for a vehicle;

2B is a side view of a bobbin assembly that is a component of a conventional gear tooth sensor for a vehicle;

Figure 3 is a cross-sectional view of the epoxy filled state after the bobbin assembly into the cup in the prior art;

Figure 4a is a side view showing the external appearance of a gear tooth sensor for a vehicle in a state where a portion of the prior art cut.

4B is a cross sectional view along line AA in FIG. 4A;

5 is a plan view of a terminal that is a component of a gear tooth sensor for an automobile according to an embodiment of the present invention;

6 is a plan view of a state injection molded terminal to the bobbin according to an embodiment of the present invention;

FIG. 7 is a cross sectional view of another step along line B-B in FIG. 6;

8 is a plan view of a state in which a terminal, an electronic element, and a hall sensor are installed in a bobbin according to an embodiment of the present invention;

9 is a cross sectional view taken along the line C-C in FIG. 8;

10 is a cross sectional view of a state in which a connecting wire is connected to a terminal by a splice according to an embodiment of the present invention;

11 is a cross-sectional view showing an overmolding state of a gear tooth sensor for a motor vehicle according to an embodiment of the present invention; And

12 is a view showing the external appearance of a gear tooth sensor for a vehicle according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

1: Gear tooth sensor 10: Terminal

12: first contact 12a: second contact

12c: third contact 14: bridge

16: extension 20: bobbin

22: storage space 24: fitting hole

24a: 1st contact hole 24b: 2nd contact hole

24c: third contact hole 28: first bulkhead

26a: second bulkhead 30: hall sensor

32: lead 40: electronic device

42: torso 44: leg

50: cable 52: splice

60: over molding 62: flange

64: bush 66: connector

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

5 to 12, there is shown a gear tooth sensor for an automobile according to the present invention.

As shown therein, the gear tooth sensor 1 according to the present invention includes a terminal 10, a bobbin, a hall sensor 30, an electronic element 40, a cable 50, and an over molding part 60.

The terminal 10 is formed of a material of a conductor such as copper so that electricity can be conducted. A pair of contact plates 12, bridge 14, and extensions 16 are provided. The first contact 12a protrudes to one side of the contact plate 12. The second contact 12b protrudes to the other side of the contact plate 12. Bridge 14 is provided with one or more to connect the contact plates 12 in parallel with each other. The extension 16 is integrally formed by bending perpendicularly to one end of the contact plate 12 (see Fig. 5).

The bobbin 20 is formed of a plastic material. The bobbin 20 is injection molded together with the terminal 10. After molding, the bridges 14 are cut from the terminal 10 and destroyed. The bobbin 20 is formed such that the first contact hole 24a of the first contact 12a and the second contact hole 24b of the second contact 12b are visible from the upper surface. In the bobbin 20, third contact holes 24c are formed in two places such that the third contact points 12c are formed on the surfaces of the contact plates 12, respectively. The bobbin 20 forms a settling hole 29 so as to be positioned between the third contact holes 24c. One end of the bobbin 20 is formed with the storage space 22 and the fitting hole 24 in succession. The first partition 26 is provided on the upper surface of the bobbin 20 near the first contact point 12a, and the second partition 28 is installed near the second contact point 12b to spark the welding work. Can be prevented (see FIGS. 6 and 7).

The hall sensor 30 is inserted and stored in the storage space 22. Approximately four leads 32 protrude from the hall sensor 30. Two of the leads 32 are connected to the first contact 12a, and one of the leads 32 is connected to the second contact 12b. The other one of the leads 32 is cut and discarded. The lead 32 of the hall sensor 30 passes through the fitting hole 24 and is connected to the first contact point 12a and the second contact point 12b.

The electronic device 40 is composed of a body 42 and a pair of legs 44. Double body 42 is placed on the settling ball (29). The leg 44 protrudes to one side and the other side of the body 42 and is soldered to the third contact 12c (see FIGS. 8 and 9).

The cable 50 is connected to the extension 16 of the terminal 10 using a splice 52 (see FIG. 10).

The overmolding part 60 is injection molded to the assembly of the terminal 10, the bobbin 20, the hall sensor 30, the electronic element 40, and the cable 50 to form an outer shape. One side and the other side of the over-molding part 60 is injection molded integrally with the flange 62 and the connector 66. The cable 50 passes through the connector 66 (see FIGS. 11 and 12).

By the configuration as described above, the gear tooth sensor for an automobile according to the present invention is as follows.

The gear tooth sensor 1 of the present invention is assembled with the terminal 10, the hall sensor 30, the electronic device 40, the cable 50, the splice 52 in order to the bobbin 20, and then It is made by injection molding the over molded part 60 in the assembly.

In detail, the terminal 10 includes a pair of contact plates 12 in a horizontal state by a plurality of bridges 14 (see FIG. 5). Coupling with the bobbin 20 by the device. Then, the bobbin 20 is formed with a settling hole 29, the first contact hole 24a, the second contact hole 24b and the third contact hole 24c on the upper surface. Here, the first contact hole 24a is isolated from the second contact hole 24b by the first partition 26 and the second partition 28 to prevent defects due to sparking during welding. Another bobbin 20 is formed with a first partition 26 near the first contact hole 24a and a second partition 28 near the second contact hole 24b. This also prevents defects due to sparking during welding operations (see FIGS. 6 and 7).

The hall sensor 30 is inserted into the storage space 22 formed in the bobbin 20, and two of the leads 32 of the hall sensor 30 are fitted through the fitting hole 24 to be positioned on the first contact hole 24a. Is soldered to the first contact point 12a, and one of the leads 32 is placed on the second contact hole 24b and soldered to the second contact point 12b. The torso 42 of the electronic device 40 is placed on the settling hole 29 of the bobbin 20, and the leg 44 protruding to one side and the other side of the torso 42 is the third contact hole 24c. Solder and weld to the third contact (12c), respectively located on the phase (see Figs. 8 and 9).

The cable 50 is connected to the extension part 16 of the contact plate 12. At this time, the extension part 16 and the cable 50 are connected by the normal splice 52. (refer FIG. 10).

In this state, that is, the overmolded part 60 is integrally injection molded to the bobbin 20 to the outside of the assembly of the terminal 10, the hall sensor 30, the electronic element 40, and the cable 50. Then, the overmolding part 60 forms the overall appearance of the gear tooth sensor 1. At the same time, the flange 62 is integrally injection molded with the bush 64 in the overmolding part 60. In addition, the work is completed by injection molding the connector 66 through which the cable 50 is passed through. (See FIGS. 11 and 12)

As described above, according to the automotive gear tooth sensor according to the present invention, by molding the overmolded part integrally to the outside of the assembly of the terminal, the hall sensor, the electronic element, and the cable to the bobbin during the molding operation of the gear tooth sensor, Electronic components can be directly welded to bobbins and molded without the need for conventional cups and PCB substrates. By eliminating the epoxy injection process, workability and cost reduction can be obtained.

What has been described above is just one embodiment for implementing a gear tooth sensor for an automobile according to the present invention, the present invention is not limited to the above embodiment, as claimed in the utility model registration claims below Without departing from the gist of the invention, anyone with ordinary knowledge in the field to which the invention belongs will have a technical spirit of the present invention to the extent that various modifications can be made.

Claims (2)

The first contact 12a protrudes to one side of the pair of contact plates 12 and the contact plate 12, and the second contact 12b protrudes to the other side of the contact plate 12. A terminal (10) for forming at least one bridge (14) connecting the contact plates (12) in parallel with each other and an extension (16) formed by bending perpendicularly to one end of the contact plate (12); The terminal 10 is injection molded together to cut the bridges 14, and the first contact hole 24a of the first contact 12a and the second contact hole 24b of the second contact 12b. Is formed to be visible from the upper surface, and the third contact hole 24c is formed in two places so that the third contact point 12c is formed on the surface of the contact plates 12, respectively, and the third contact hole 24c is formed. A bobbin 20 formed between the settling holes 29 and one end of the receiving space 22 and the fitting holes 24; The lead 32 is inserted into and stored in the storage space 22, and the lead 32 of the tip is inserted through the fitting hole 24 of the bobbin 20 to be connected to the first contact 12a and the second contact 12b. Hall sensor 30; An electronic device 40 including a body 42 mounted on the settling hole 29 and a leg 44 protruding to one side and the other side of the body 42 and soldered to the third contact point 12c; A cable 50 connected to the extension part 16 by a splice 52; And The injection molding is performed on the assembly of the terminal 10, the bobbin 20, the hall sensor 30, the electronic device 40, and the cable 50 to form an outer shape, and the flange 62 is formed on one side and the other side. Overmolding part 60 for integrally injection molding the connector 66 Automotive gear tooth sensor comprising a. According to claim 1, wherein the upper surface of the bobbin 20 The first partition 26 is installed near the first contact 12a, and the second partition 28 is installed near the second contact 12b so that sparks can be prevented during welding. Automotive gear tooth sensor, characterized in that.