JP2010037915A - Check plate supporting structure in door checker for automobile and method of assembling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate vibration and hitting sound of a check plate to bracket arms and to reduce and stabilize the rotational resistance of the check plate. <P>SOLUTION: In this check plate supporting structure in a door checker for an automobile, first and second bracket arms 7b, 7c are formed on a bracket 7 fixed to the body D of an automobile. Synthetic resin bosses 24, 24 are formed on both end surfaces of the base end 6e1 of the check plate 6 inserted between both bracket arms 7b, 7c, and the base end 6e1 of the check plate 6 is rotatably supported by a pivot shaft 8 both ends of which are supported by both bracket arms 7b, 7c. A squeezed pattern 27 is formed on the end surface of each of the bosses 24, 24. The first and second bracket arms 7b, 7c are arranged in such a manner as to provide compressive deformation to an infinite number of projections 27b of the squeezed pattern 27 by the inner surfaces of the bracket arms. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, first and second bracket arms opposed to each other are formed on a bracket fixed to a body of an automobile, and both brackets are provided on both end surfaces of a base end portion of a check plate inserted between the bracket arms. A check in an automotive door checker in which a synthetic resin boss that contacts the inner surface of the arm is formed and the base end of the check plate is pivotally supported by pivot shafts that are supported at both ends by both bracket arms. The present invention relates to an improvement in a plate support structure and its assembly method.

A check plate support structure in such an automobile door checker is already known, as disclosed in Japanese Patent Application Laid-Open No. H10-228707.
JP 2007-56461 A

  In such a check plate support structure for an automobile door checker, the metal plate bracket arm and the check plate synthetic resin boss are in contact with each other, and the check plate bracket arm has relatively little vibration noise. In addition, the rotational sliding is relatively smooth.

  However, the demand for quietness of recent automobiles has become more severe, and it is desirable to eliminate vibration noise from the bracket arm of the check plate.

  By the way, in order to eliminate the vibration noise from the bracket arm of the check plate, it is only necessary to zero the rotational sliding gap of the check plate. As a result, the door opening and closing feeling will be worsened.

  SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is possible to eliminate an audible vibration of the check plate against the bracket arm and to make the check plate stable while reducing the rotational resistance of the check plate. It is an object of the present invention to provide a check plate support structure in a checker and an assembling method thereof.

  In order to achieve the above object, the present invention forms a first and a second bracket arm opposed to each other on a bracket fixed to the body of an automobile, while a check plate inserted between the bracket arms. Both ends of the end are formed with synthetic resin bosses that come into contact with the inner surfaces of both bracket arms, and the base end of the check plate is pivotally supported by pivot shafts that are supported at both ends by both bracket arms. In the check plate support structure for an automobile door checker, a squeezed pattern is formed on the end surface of the boss, and the first and second bracket arms are compressed and deformed into innumerable protrusions in the squeezed pattern by their inner side surfaces. It is the first feature that it has been arranged so as to give.

  In addition to the first feature, the present invention has a second feature in which grease is held in innumerable recesses in the drawn pattern.

  Further, according to the present invention, in assembling the check plate support structure in the automotive door checker according to the first feature, a step of forming a drawing pattern on the end surface of the boss of the check plate, and a base end portion of the check plate having the boss are bracketed A pivot shaft that loosely inserts between the first and second bracket arms, first and second outer shaft holes provided in the first and second bracket arms, and an intermediate shaft hole provided in the base end portion, respectively. And by applying an axial caulking force to both ends of the pivot shaft, an enormous portion for retaining is formed at the end of the pivot shaft, and at the same time, both bracket arms are connected to the choke pattern. The second feature is to sequentially execute the step of deforming so as to be in pressure contact with each other.

  In addition to the second feature of the present invention, the pivot shaft is connected to the main shaft, a head portion connected to one end of the main shaft, and an annular step portion to the other end of the main shaft. And a secondary shaft having a smaller diameter than the main shaft, the main shaft being fitted into the first outer shaft hole and the intermediate shaft hole, and the second shaft having the smaller diameter than the first outer shaft hole. By fitting into the hole and caulking the secondary shaft in the axial direction, the head is brought into contact with the outer surface of the first bracket arm while forming the enormous portion, and the second bracket arm is The third feature is that the projecting portion of each of the drawn patterns is compressed and deformed by the inner surfaces of the first and second bracket arms that are deformed until they come into contact with the annular step portion, and thus approach each other.

  According to the first feature of the present invention, in the synthetic resin boss at the base end portion of the check plate, the first and second brackets are formed by the repulsive force due to the compressive deformation of the countless convex portions on the end surface. Because it is pressed against the inner surface of the bracket arm, it is possible to suppress the occurrence of backlash between the check plate plate and the first and second bracket arms, and thus prevent the generation of vibration noise while the vehicle is running. Can do.

  In addition, the spring constant of the infinite number of convex parts in the squeezed pattern is relatively low, so even if there is a slight difference in the amount of compressive deformation of the convex parts in a mass-produced automobile door checker, there is a large difference in the repulsive force Therefore, the rotational frictional resistance of the check plate with respect to the first and second bracket arms can be stabilized substantially constant. Thus, the opening and closing feeling of the automobile door can be kept good for a long time.

  According to the second feature of the present invention, the grease is held in the infinite number of recesses in the drawn pattern, so that the friction surface between the infinite number of raised parts in the drawn pattern and the first and second bracket arms by this grease. The friction friction resistance of the check plate against the first and second bracket arms can be stabilized to be substantially constant while minimizing it, and at the same time, the wear of the innumerable protrusions can be prevented and the durability of the boss can be maintained. Can be increased.

  According to the third aspect of the present invention, the base end portion of the check plate can be inserted between the first and second bracket arms of the bracket without damaging the throttle pattern on the boss end surface, and the pivot shaft It is possible to narrow the space between the first and second bracket arms while forming enormous parts for retaining them by caulking, and press them into innumerable protrusions in the squeezed pattern of each boss. Very simple and reliable.

  According to the fourth aspect of the present invention, when the enormous portion is formed by caulking to the secondary shaft of the pivot shaft, the first bracket and the second bracket arm approach each other, and the second bracket arm is an annular step portion of the pivot shaft. Therefore, it is possible to reliably obtain a good pressure contact state of the first and second bracket arms to the innumerable convex portions in each drawing pattern.

      Embodiments of the present invention will be described below on the basis of preferred embodiments of the present invention shown in the accompanying drawings.

  1 is a perspective view of an essential part of an automobile equipped with a door checker according to the present invention, FIG. 2 is a plan view of the door checker, FIG. 3 is a sectional view taken along line 3-3 in FIG. 2, and FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. 4, FIG. 6 is an enlarged sectional view of a base end portion when the check plate of the door checker is used alone, and FIG. 7 is a process during assembly of the door checker. FIG. 8 and FIG. 8 are explanatory views of other processes when the door checker is assembled.

  In FIG. 1, a door D is pivotally attached to a body B of an automobile via a hinge H so as to open and close its entrance, and between the body B and the door D, the door D of the present invention is attached to the door D. A checker C is attached.

  As shown in FIGS. 2 and 3, the door checker C has a case 1 fixed to the inner surface of the end wall of the door D. The case 1 includes a box-shaped case body 1a having one end opened, and a cover 1b coupled to the case body 1a while covering the open end. The case body 1a and the cover 1b are provided at the end of the door D. The cover 1b is brought into contact with the wall on the inner surface of the end wall and fastened by a pair of upper and lower bolts 2 and 2. The cover 1b and the case main body 1a are formed with through holes 4 and 5 arranged coaxially with the through hole 3 opened in the end wall of the door D, and pass through the three through holes 3, 4 and 5. A base end portion 6e1 of the check plate 6 is rotatably connected to a bracket 7 via a pivot shaft 8. The bracket 7 is arranged on the body B by arranging the pivot shaft 8 in parallel with the pivot shaft of the hinge H. It is fixed with bolts 9. The support structure of the check plate 6 by the bracket 7 will be described in detail later.

  The check plate 6 is arranged substantially horizontally, and its upper and lower surfaces are detent surfaces 10 and 10. The check plate 6 includes a plate body 6a made of a steel plate that is directly connected to the bracket 7 and arranged substantially horizontally, and a synthetic resin coating layer 6b that is mold-bonded so as to cover the peripheral surface of the plate body 6a. It consists of. The covering layer 6b is formed so that the distance between the upper and lower detent surfaces 10 and 10 of the check plate 6 gradually increases from the base end 6e1 side to the free end 6e2 side of the plate 6 and the detent surface 10 , 10 is formed with one or a plurality of half-open detent notches 10a in the middle in the longitudinal direction, and a full-open detent notch 10b in the vicinity of the free end, and a full-open stopper 12 adjacent to the full-open detent notch 10b is connected to the plate body 6a. It is attached to. The fully open stopper 12 includes a steel plate stopper plate 14 fixed to the plate body 6a with a pin 13, and a stopper cushion rubber 15 mounted on the stopper plate 14 and facing the fully open detent notch 10b.

  The case 1 includes a pair of upper and lower synthetic resin detent members 16 and 16 for holding the door D in a predetermined open position in cooperation with the pair of detent surfaces 10 and 10 of the check plate 6. It is fitted and held slidably along the thickness direction. These detent members 16 and 16 include a semi-cylindrical engaging portion 16a that can engage with the half-open detent notch 10a and the full-open detent notch 10b.

  In the case 1, a pair of upper and lower elastic members 17, 17 that elastically urge the detent members 16, 16 against the detent surfaces 10, 10 of the check plate 6 are accommodated in a compressed state. Each elastic member 17 is made of an elastic material such as an elastomer.

  Thus, when the door D is opened from the fully closed position, the case 1 moves to the free end portion 6e2 side of the check plate 6 and at the same time, the check plate 6 rotates around the pivot shaft 8. Then, according to the movement of the case 1 toward the check plate 6 free end 6e2 side, the engaging portions 16a, 16a of the detent members 16, 16 slide so as to rise above the detent surfaces 10, 10 of the check plate 6. Accordingly, since the resilient members 17 and 17 are compressed, the pressure contact force of the detent members 16 and 16 with respect to the detent surfaces 10 and 10 is increased by the increase of the repulsive force. Will increase.

  When the door D reaches the predetermined half-open position, the engaging portions 16a and 16a of the detent members 16 and 16 fall into the half-open detent notches 10a and 10a of the check plate 6 with the elastic force of the elastic members 17 and 17. As a result, the opening torque of the door D increases rapidly, so that the door D can be held at a predetermined half-open position.

  Further, when a further opening force is applied to the door D so that the engaging portions 16a and 16a of the detent members 16 and 16 are escaped from the half-open detent notches 10a and 10a, and the door D reaches a predetermined fully opened position, it is engaged. The parts 16a and 16a fall into the fully open detent notches 10b and 10b, and at the same time, the case 1 is elastically received by the stopper rubber 15, whereby the door D can be held in the fully open position.

  Even in the process of closing the door D from the fully open position, the door D is held at the predetermined half open position by the engagement between the engaging portions 16a and 16a of the detent members 16 and 16 and the half open detent notches 10a and 10a as described above. In the case of further closing, the engagement torque 16a, 16a of the detent members 16, 16 slides down the detent surfaces 10, 10 of the check plate 6, so that the closing torque of the door D is reduced moderately. , The closure can be done lightly.

  Now, the support structure of the check plate 6 by the bracket 7 will be described in detail with reference to FIGS.

  The bracket 7 is made of a steel plate, and a bracket base 7a fixed to the body B with bolts 9 and bent vertically from both upper and lower end portions of the bracket base 7a and arranged vertically to support the base end portion 6e1 of the check plate 6. It consists of a pair of first and second bracket arms 7b, 7c. A first outer shaft hole 21 is formed in the first bracket arm 7b, and a second outer shaft hole 22 having a smaller diameter than the first outer shaft hole 21 is formed in the second bracket arm 7c.

  The covering layer 6b of the check plate 6 connects the bosses 24, 24 through a pair of bosses 24, 24 protruding upward and downward at the base end 6e1 of the check plate 6 and the through hole 20 of the plate body 6a. The hollow cylindrical portion 25 is integrally formed, and the hollow portion of the hollow cylindrical portion 25 is an intermediate shaft hole 23. A drawing pattern 27 is formed on the end faces of the bosses 24 and 24, and grease 28 is applied to the end faces of the bosses 24, 24. The grease 28 is held in countless recesses 27a, 27a,.

  The pivot shaft 8 is integrally connected to the main shaft 8a fitted in the first outer shaft hole 21 and the intermediate shaft hole 23, and the upper end of the main shaft 8a, and comes into contact with the outer surface of the first bracket arm 7b. The head 8b is constituted by a sub shaft 8c having a smaller diameter than the main shaft 8a, which is integrally connected to the lower end of the main shaft 8a via an annular step portion 8d and is fitted into the second outer shaft hole 22.

  Thus, the portion of the auxiliary shaft 8 c that protrudes outside the first outer shaft hole 21 is formed in the enlarging portion 29 by caulking, and the enlarging portion 29 allows the second bracket arm 7 c to be connected to the pivot shaft 8. It is kept in close contact with the annular step 8d. As a result, the innumerable convex portions 27b, 27b... Of the aperture pattern 27 of the bosses 24, 24 are pressed against the inner surfaces of the first and second bracket arms 7b, 7c by the repulsive force due to the compression deformation of the top portions. The countless concave portions 27a, 27a,... Of the drawn pattern 27 continue to hold the grease 28.

  In this way, the synthetic resin bosses 24, 24 of the base end portion 6e1 of the check plate 6 have innumerable convex portions 27b, 27b,... Since the inner surfaces of the first and second bracket arms 7b and 7c are pressed against each other, it is possible to suppress the play between the check plate 6 and the first and second bracket arms 7b and 7c. The generation of vibration noise can be prevented.

  In addition, since the spring constant of the infinite number of convex portions 27b, 27b... In the diaphragm pattern 27 is relatively low, there is a slight difference in the amount of compressive deformation of the convex portions 27b, 27b. Even if it exists, the big difference does not arise in the repulsive force, Therefore Therefore, the rotational friction resistance with respect to the 1st and 2nd bracket arms 7b and 7c of the check plate 6 can be stabilized substantially constant.

  Moreover, since the grease 28 is held in the innumerable recesses 27a, 27a ... in the drawing pattern 27, the grease 28 holds the innumerable projections 27b, 27b ... in the drawing pattern 27 and the first and second bracket arms 7b. , 7c, and the rotational frictional resistance of the check plate 6 with respect to the first and second bracket arms 7b, 7c can be stabilized to be substantially constant while minimizing as much as possible. Can be prevented from being worn, and the durability of the bosses 24, 24 can be improved. By doing so, the opening and closing feeling of the door D of the automobile can be kept good for a long time.

  Next, a method for assembling the support structure for the check plate 6 using the bracket 7 will be described with reference to FIGS.

  First, as shown in FIGS. 5 and 6, when the covering layer 6b is injection-molded with synthetic resin together with the bosses 24 and 24 of the base end portion 6e1 of the check plate 6, the end surfaces of the bosses 24 and 24 are molded on the end surfaces. The drawn pattern 27 formed on the mold is transferred. After the injection molding, grease 28 is applied on the drawn pattern 27 on the end faces of the bosses 24,24.

  Next, as shown in FIG. 7, the base end portion 6e1 of the check plate 6 is loosely inserted between the first and second bracket arms 7b and 7c of the bracket 7. That is, the distance S1 between the inner surfaces of the first and second bracket arms 7b, 7c of the bracket 7 is set in advance slightly larger than the distance S2 between the end surfaces of the bosses 24, 24. By doing so, it is possible to facilitate the insertion of the base end portion 6e1 between the first and second bracket arms 7b, 7c, and at the same time, it is possible to prevent the squeezed pattern 27 of each boss 24, 24 from being damaged. The difference between S1 and S2 is set as small as possible within a range in which the base end portion 6e1 can be easily inserted between the first and second bracket arms 7b and 7c.

  Next, as shown in FIG. 8, with the first outer shaft hole 21 of the first bracket arm 7b and the intermediate shaft hole 23 of the base end portion 6e1 aligned, the pivot shaft 8 is moved to the first outer shaft. The main shaft 8a is fitted into the first outer shaft hole 21 and the intermediate shaft hole 23, and the auxiliary shaft 8c is connected to the first outer shaft hole 23. The second outer shaft hole 22 having a smaller diameter than the outer shaft hole 21 is fitted.

  Then, by applying an axial caulking force F to both ends of the pivot shaft 8 as shown in FIG. 4, a massive portion 29 for retaining is formed at the end of the auxiliary shaft 8c, and at the same time, the second bracket The arm 7c is pushed and deformed by the enormous portion 29 toward the annular step 8d side of the pivot shaft 8. As a result, the outer surface of the first bracket arm 7b is in close contact with the head 8b of the pivot shaft 8, and the inner surface of the second bracket arm 7c is in close contact with the annular step 8d of the pivot shaft 8. At this time, innumerable convex portions 27b, 27b,... In the narrowed pattern 27 on each end face of the bosses 24, 24 are not crushed by the inner surfaces of the corresponding first and second bracket arms 7b, 7c. Appropriate compression of the range is applied, and the repulsive force keeps the bosses 24, 24 and the first and second bracket arms 7b, 7c in a pressure contact state, and the recesses 27a, 27a. The As is clear from this, in the pivot shaft 8, the length of the main shaft 8a from the head 8b to the annular step portion 8d that regulates the closest approach distance between the first and second bracket arms 7b and 7c is as described above. The first and second bracket arms 7b, 7c are set so as to give the appropriate compression to the innumerable convex portions 27b, 27b,.

  According to such an assembling method of the check plate support structure, the base end portion 6e1 of the check plate 6 is connected to the first and second bracket arms 7b of the bracket 7 without damaging the throttle pattern 27 on the end surface of each boss 24. 7c, and the pivot shaft 8 is formed with a swollen portion 29 to prevent it from being squeezed, while the space between the first and second bracket arms 7b, 7c is narrowed, and the bosses 24, 24 Can be brought into pressure contact with the innumerable convex portions 27b, 27b,... In the squeezed pattern 27. Therefore, this assembling method is extremely simple and reliable.

  Moreover, when the enlarged portion 29 is formed by caulking the pivot shaft 8 to the auxiliary shaft 8c, the first and second bracket arms 7b and 7c approach each other, and the second bracket arm 7c is the annular step portion 8d of the pivot shaft 8. Therefore, the first and second bracket arms 7b, 7c can be surely brought into good pressure contact with the countless convex portions 27b, 27b,.

  The present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the invention. For example, the narrowed pattern 27 on the end faces of the bosses 24 and 24 can be formed by post-processing such as sandblasting after the boss bosses 24 and 24 are formed. In the invention of claim 1, the enormous portions 29 by caulking can be formed at both ends of the pivot shaft 8.

The principal part perspective view of the motor vehicle which attached the door checker which concerns on this invention. The top view of the said door checker. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 is an enlarged view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. The base end part expanded sectional view at the time of the single-piece | unit of the check plate of the said door checker. 1 process explanatory drawing at the time of the assembly of the said door checker. Other process explanatory drawing at the time of the assembly of the said door checker.

Explanation of symbols

B: Body C: Door checker D: Door 6: Check plate 6e1: Check plate base end 6e2: Check plate free end 7. Bracket 7b ... First bracket arm 7c ... Second bracket arm 8 ... Pivot shaft 8a ... Main shaft 8b ... Head 8c ...・ Sub shaft 21... First outer shaft hole 22... Second outer shaft hole 23... Intermediate shaft hole 27. Convex part 28 in drawing pattern ... Grease 29 ... Enormous part

Claims (4)

First and second bracket arms (7b, 7c) facing each other are formed on a bracket (7) fixed to the body (D) of the automobile, and are inserted between the bracket arms (7b, 7c). Both ends of the base end portion (6e1) of the check plate (6) are formed with synthetic resin bosses (24, 24) that come into contact with the inner surfaces of both bracket arms (7b, 7c). 7c) In the check plate support structure in the automobile door checker, in which the base end (6e1) of the check plate (6) is rotatably supported by the pivot shaft (8) supported at both ends.
A stop pattern (27) is formed on the end face of the boss (24, 24), and the first and second bracket arms (7b, 7c) are infinitely convex on the stop pattern (27) by their inner surfaces. (27b) A check plate support structure for a door checker for automobiles, wherein the check plate support structure is arranged so as to impart compressive deformation. In the check plate support structure in the automobile door checker according to claim 1,
A check plate support structure for an automobile door checker, wherein grease (28) is held in innumerable recesses (27a) in the drawn pattern (27). In assembling the check plate support structure in the automobile door checker according to claim 1,
A step of forming a stop pattern (27) on the end face of the boss (24, 24) of the check plate (6), and a base end (6e1) of the check plate (6) having the boss (24, 24) 7) the step of loosely inserting between the first and second bracket arms (7b, 7c) and the first and second outer shaft holes (21, 21) provided in the first and second bracket arms (7b, 7c), respectively. 22) and an intermediate shaft hole (23) provided in the base end portion (6e1) are fitted with a pivot shaft (8), and axial caulking force (F) is applied to both ends of the pivot shaft (8). In addition, a massive portion (29) for retaining is formed at the end of the pivot shaft (8), and at the same time, both bracket arms (7b, 7c) are pressed against the throttle pattern (27). The process of transforming into Characterized that the assembly method of the check plate support structure in a motor vehicle door checker that. In the assembly method of the check plate support structure in the automobile door checker according to claim 3,
The pivot shaft (8) includes a main shaft (8a), a head (8b) connected to one end of the main shaft (8a), and the other end of the main shaft (8a) via an annular step (8d). The main shaft (8a) is connected to the auxiliary shaft (8c) having a smaller diameter, and the main shaft (8a) is fitted into the first outer shaft hole (21) and the intermediate shaft hole (23). , The counter shaft (8c) is fitted into the second outer shaft hole (22) having a smaller diameter than the first outer shaft hole (21), and the sub shaft (8c) is caulked in the axial direction, thereby While forming the enormous portion (29), the head (8b) is brought into contact with the outer surface of the first bracket arm (7b), and the second bracket arm (7c) is attached to the annular step portion (8d). Due to the inner surface of the first and second bracket arms (7b, 7c) that are deformed until they abut and thus approach each other Wherein the compressing deformation convex section (27b) wherein in each aperture pattern (27), the assembly method of the check plate support structure in a motor vehicle door checker.

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