KR20010064184A - Position sensing device of door lock actuator - Google Patents

Abstract

PURPOSE: A location sensor for a door-lock actuator is provided to detect the location of the door-lock actuator exactly by shaping surface on the part of road to reduce the gap among elements. CONSTITUTION: The door-lock actuator where PCB on which a plurality of fixed contact points are formed is mounted has a cover and a body. The road guide(34) has a hook(34a) and a receipt part(34b) to which a movable contact point is inserted. The movable contact point is contacted to the one of the plurality of fixed contact points by a spring selectively. The road(31) has a grove(31a) coupled with the hook(34a). The first and second slope part(50,52) are formed on the part coupled with the road guide(34) in the road(31).

Description

POSITION SENSING DEVICE OF DOOR LOCK ACTUATOR}

The present invention relates to a door lock actuator, and more particularly, to confirm the open and locked position of the door lock actuator, to reduce the position detection dispersion by reducing the gap between the parts of the sensing structure to increase the reliability of operation for the door lock actuator It relates to a position sensor of the actuator.

The body constituting the exterior of the vehicle is equipped with a plurality of doors to be opened and closed so that the occupants can get on and off, and these doors are fitted with a window glass that allows the introduction of outdoor air by raising and lowering as needed. In addition, the door needs to be locked so as not to open for safety even during parking or driving, and for this purpose, a door lock is provided. To operate this door lock, each door is provided with a door lock switch & actuator (hereinafter referred to as a door lock actuator), so that the remaining door locks are interlocked and automatically locked or released even if only the driver's door lock is operated.

1 shows a typical door lock actuator. The overall configuration thereof includes a cover 10 having a first opening 10a and a plurality of fixing protrusions 12 formed on an edge thereof, and a second opening 20a opposite to the first opening 10a. And a main body 20 having a plurality of fixing holes 22 into which the fixing protrusions 12 are inserted and fixed, and a body 20, and a plurality of fixed terminals 42 in the body 20. ) Is equipped with a PCB (40). In the cover 10 and the main body 20, the position sensor 30, which is provided with a movable terminal 36 for selectively contacting one of the plurality of fixed terminals 42 and sending an electric signal to the control unit, can protrude. Is fitted. At the upper end of the position sensor 30, a hole 32 into which a link connected to the door lock is fitted is formed.

Here, a guide 24 having a guide hole 24a for guiding the longitudinal movement of the position sensor 30 is formed inside the main body 20. On the upper end of the rod 31 of the position sensor 30, the position limiting portions 30a and 30b are formed to be disposed through the guide 24, and the movable terminal 36 at the lower end is elastically pressurized by the spring 35. As a result, the surface of the PCB 40 is in sliding contact with the surface. A terminal 44 that receives external power is attached to the substrate 40.

Next, Figure 2 is a cross-sectional view showing an assembled state of a conventional position sensor. As shown here, the position sensor 30 is largely coupled to the rod 31 on which the spiral portion 36 is formed, and the rod 31 is hooked with the movable terminal through the spring 35. It may be divided into a rod guide 34 into which the 36 is inserted.

A locking groove 31a is formed at the tip of the rod 31, and a locking protrusion 34a is formed in the rod guide 34 to be engaged with the locking groove 31a so as not to be separated. The movable terminal 36 is inserted and fixed in the state of being elastically pressed by the spring 35 in the lower accommodating groove 34b.

The conventional position detector having such a configuration has a problem in that play is caused by a gap between the rod and the rod guide, so that the position detection of the door lock actuator is not accurate.

The present invention for solving this problem provides a position sensor of the door lock actuator to give a chamfered shape to a portion of the rod inserted into the rod guide to reduce the gap between these parts as much as possible to detect the position of the door lock actuator more accurately. There is a purpose.

1 is an exploded perspective view showing the configuration of a general door lock actuator,

2 is a cross-sectional view showing an assembled state of a conventional position sensor,

Figure 3 is a cross-sectional view showing an assembled state of the position sensor of the present invention.

♣ Explanation of symbols for main part of drawing ♣

10: Cover 20: Body

30: position detector 31: loaded

34: road guide 36: spiral

40: PCB 50, 52: First and second slope portions

An object of the present invention described above is composed of a cover and a main body coupled to each other and the door lock actuator is provided with a plurality of fixed contact points in the PCB, there is a hook, one of the plurality of fixed contacts via a spring and a spring; A rod guide having a receiving portion for selectively inserting a movable contact to be inserted therein, and a locking groove engaged with the hook, and a rod having first and second inclined portions formed at a portion engaged with the rod guide. It is achieved by the position sensor of the door lock actuator, characterized in that made.

Hereinafter, with reference to the accompanying Figure 3 will be described in detail with respect to the position sensor of the door lock actuator according to a preferred embodiment of the present invention.

3 is a cross-sectional view showing the assembled state of the position sensor of the present invention. First, as described with reference to FIG. 1, in the configuration of the door lock switch, a cover 10 having a plurality of fixing protrusions 12 formed on an edge thereof, and a plurality of fixing holes 22 into which the fixing protrusions 12 are inserted and fixed. It consists of a main body 20 which is coupled to the cover 10 by the opposite), the main body 20 is equipped with a PCB 40, which is provided with a plurality of fixed terminals 42. In addition, the position sensor 30 in the cover 10 and the main body 20 is provided with a movable terminal 36 which selectively contacts one of the plurality of fixed terminals 42 and transmits an electrical signal to the control unit. It is mounted to protrude. At the upper end of the position sensor 30, a hole 32 into which a link connected to the door lock is fitted is formed.

In the position sensor 30 of this configuration, in order to minimize the gap between the rod 31 and the rod guide 34, in the preferred embodiment of the present invention, the rod in contact with the rod guide 34 at the time of engagement ( 31) illustrates the method of giving chamfering shapes.

That is, as shown in Fig. 3, in the configuration of the position sensor of the present invention, the movable contact selectively contacts one of the plurality of fixed contacts 42 via the hook 34a and the spring 35. A portion having a rod guide (34) having an accommodating portion (34b) into which the (36) is inserted, and a locking groove (31a) engaged with the hook (34a), is coupled to the rod guide (34). It consists of a rod 31 in which the first and second inclined portions 50, 52 are formed.

Here, the first inclined portion 50 and the second inclined portion 52 are formed to have different angles. That is, the first inclined portion 50 is formed at an angle of approximately 45 degrees, while the second inclined portion 52 is formed at an angle of approximately 30 degrees, and these two inclined portions 50 and 52 are formed. The gap between the rod 31 and the rod guide 34 was configured to be suppressed as much as possible. In the figure, l1 represents the longitudinal length of the second inclined portion 52, l2 represents the distance between the rod 31 and the rod guide 34 in the assembled state, and l3 represents the second inclined portion 52. Represents the lateral length of.

In the process of inserting the rod 31 having such a chamfered shape into the rod guide 34, the rod 31 is slightly opened by the first and second inclined portions 50 and 52. Since the assembly is completed, the gap generated between the rod guide 34 and the rod 31 can be suppressed as much as possible after the assembly is completed.

In the above-described preferred embodiment of the present invention, the structure is provided to minimize the play between the rod and the rod guide by chamfering the rod, but it is understood that various modifications are possible to those skilled in the art. Could be. For example, a chamfered shape may be provided on the rod guide side instead of the rod, and the angle of the first inclined portion and the second inclined portion may be configured equally. In addition, even if one inclined portion of each of the rod and the rod guide is provided, the effect of suppressing the gap between them can be obtained as much as possible.

According to the present invention described above, in order to minimize the gap generated between the rod guide and the rod after assembly in consideration of the gap in the hook assembly characteristics and the gap caused by the distribution of parts, the first and second inclined portions are provided on the rod. As a result, rods bearing the first and second inclined portions are assembled with the rod guides slightly opened, so that the gap generated between the rod guide and the rod is restrained to the maximum after assembly is completed. It is possible to detect more precisely.

Claims (2)

In the door lock actuator made of a cover 10 and the main body 20 are coupled to each other and the PCB 40 is formed with a plurality of fixed contacts 42 therein, The rod guide 34 in which the accommodating part 34b into which the hook 34a and the movable contact 36 which selectively contact one of the said several fixed contacts 42 via the spring 35 is inserted is formed. Wow, A rod 31 having a locking groove 31a engaged with the hook 34a and having a first and second inclined portions 50 and 52 formed at a portion that is engaged with the rod guide 34. Position detector of the door lock actuator, characterized in that made. The method of claim 1, The first inclined portion (50) and the second inclined portion (52), the position sensor of the door lock actuator, characterized in that inclined at different angles.