JP4093300B2 - Buffer clip - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, for example, when the first member and the second member move and come into contact with each other, or when the second member moves and comes into contact with the first member, the collision between the members is relaxed and absorbed. The present invention relates to a buffer clip suitable for the above.
[0002]
[Prior art]
FIG. 7 shows a conventional example of a buffer clip (Japanese Patent Laid-Open No. Hei 8-200420). The buffer clip 60 has a main body 61 having an elastic engagement portion 64 and a buffer member 65 mounted on the upper side, and is a fixed side panel (for example, a panel defining a trunk lid of an automobile. It is attached to a mounting hole 71 provided in a member 70, and a movable side panel (for example, a trunk lid of an automobile, hereinafter referred to as a second member) 72 is brought into contact with the buffer member 65 through a buffer member 65 so as to provide a buffering action. Demonstrate. The main body 61 has a clip structure in which a column 63 is provided on a bowl-shaped head 62 and a plurality of elastic engagement portions 64 are integrally formed in an obliquely upward direction from the tip of the column 63. The buffer member 65 has a small block shape, and includes a vertical through hole 66 and a holding groove portion 67 provided on the inner periphery of the through hole 66.
[0003]
In the above structure, when the support column 63 is pushed in from the upper side of the through hole 66, the elastic engagement portion 64 passes through the through hole 66 while being reduced in diameter, and the head 62 is engaged with the holding groove portion 67. The buffer member 65 is fixedly held by the main body 61 and becomes an integrated product. Then, when the support 63 is pushed from above the mounting hole 71, the buffer clip 60 passes through the mounting hole 71 with a reduced diameter displacement of the elastic engaging part 64, and the elastic engaging part 64 is restored at the same time as the passing is completed. It is attached to the first member 70 by being restored to the expanded state of FIG.
[0004]
[Problems to be solved by the invention]
The buffer clip 60 described above has a simple configuration but has the following problems.
First, in this structure, the workability of assembling the buffer member 65 with respect to the main body 61 is poor. This is because when the support 63 is inserted into the through-hole 66, the plurality of elastic engagement portions 64 must be deformed in diameter, and the elastic engagement portions 64 can be used to secure a fixing force to the first member 70. This is because it must be formed in a state where it is expanded to some extent. In addition, the buffer member 65 must be forced to press the bowl-shaped head portion 62 into the through-hole 66 and engage with the holding groove portion 67, and the workability is also deteriorated from this point.
Secondly, in the state of use, the buffer member 65 receives an axial impact from the second member 72 and the like. However, if the buffer member 65 elastically shrinks in the vertical direction with an excessive impact load, the holding groove portion 67 is also deformed and the head is deformed. There is a possibility that the engagement with the portion 62 is released. In this structure, even if the engagement between the head 62 and the holding groove 67 is released, the cushioning member 65 does not come off immediately because the head 62 is pressed against the inner diameter of the through hole 66, but vibration or the like does not occur. If it adds, it will be easy to generate | occur | produce that it will remove | deviate from the head 62 and will be lost.
Thirdly, this kind of buffer clip 60 is not limited to a single mode, and a plurality of buffer clips 60 are often used to relax and absorb shocks at a plurality of locations. In the case of multiple use, each buffer clip 60 must be engaged and attached to the corresponding attachment hole 71 in order with a predetermined pressing force, and it is difficult to improve the attachment work. This is because, for example, a plurality of buffer clips 60 are simply arranged in each mounting hole 71, and finally, each buffer clip 60 is simultaneously pressed to be able to be engaged with each mounting hole 71 collectively. This is because it is easy to reduce the work man-hours and to automate. In terms of appearance, the buffer member 60 exposes the through-hole 66 and looks bad, and dust or the like enters the hole and is further deteriorated.
[0005]
An object of the present invention is to solve the above-described problems and improve the workability of assembling the buffer member to the main body, the stability in the mounted state, the workability of mounting in a plurality of usage modes, and the appearance characteristics. Other objects will be clarified in the contents described below.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, as illustrated in FIGS. 1 to 6, the main body 2 has an elastic engagement portion 54 for attachment and a buffer member 3 mounted on the upper side. In the shock-absorbing clip 1 that is attached to the attachment hole 71 via the elastic engagement portion 54 and that allows the first member 70 and the second member 72 to come into contact with each other via the shock-absorbing member 3.
The buffer member 3 includes a buffer portion 31 that comes into contact with the second member 72, a neck portion 32 provided below the buffer portion 31, and a connecting base portion 33 connected to the neck portion 32.
The main body 2 comprises a male member 4 and a female member 5 that are temporarily assembled,
The male member 4 includes an upper head portion 41, an insertion shaft portion 42 provided on the head portion, and the neck portion 32 and the connecting base portion 33 provided on the head portion from the outer peripheral side of the head portion 41. A mounting hole 40 capable of holding the buffer member 3 by engaging the neck and the connecting base by moving in the radial direction toward the center;
The female member 5 is disposed on the mounting hole of the first member, can be fitted to the head 41, and forms a recess 50 with an insertion shaft portion through hole 52; and The elastic engagement portion 54 which is provided below the flange portion and is expanded by the insertion shaft portion 42 which is pushed from the through hole;
Further, the flange portion 51 accommodates the entire head 41 in the recess 50 with the male member 4 pushed into the female member 5 and the elastic engagement portion 54 expanded. The lower surface of the buffer portion 31 is in contact with the end surface of the recess .
[0007]
According to the above structure, the buffer member 3 is engaged with the mounting hole 40 on the main body side when the neck portion 32 and the connecting base portion 33 are laterally moved, and is fixedly held by the main body 2. The operation feature is that, since the buffer member 3 is engaged with the mounting hole 40 of the main body 2 from the radial direction, the buffer member 3 is buffered in the use state in which the buffer member 3 is mounted to the mounting hole 71 of the first member 70 via the elastic engagement portion 54. Even if an excessive impact is applied to the portion 31 from the second member 72 and the entire cushioning member is reduced in the vertical direction, the engagement of the connecting base portion 33 and the like with respect to the mounting hole 40 can be reliably maintained, Thus, the possibility that the engagement is released can be eliminated. Further, the assembly workability can be improved with respect to the conventional structure, and the problem of deterioration in appearance due to the shape of the buffer portion 31, that is, the conventional vertical through-hole can be eliminated.
In the present invention described above, the relationship between the first member 70 and the second member 72 may be any one of a mode in which they are movable, a mode in which one is fixed and the other is movable, and a mode in which one is movable and the other is fixed. But you can. Accordingly, in the present invention, the buffer clip 1 is attached to the first member. However, since the first member 70 and the second member 72 are in contact with each other via the buffer member 3, the first member and the second member are in contact with each other. The members can be reversed.
The main body 2 includes a male member 4 and a female member 5 that are temporarily assembled, and the male member 4 includes the head 41 and an insertion shaft portion 42 provided below the head, and the female member 5 is disposed on the mounting hole of the first member and can be fitted to the head portion 41 and forms a recess 50 with an insertion shaft portion through hole 52 and the flange portion 51. And the elastic engaging portion 54 is expanded by the insertion shaft portion 42 that is pushed down from the through hole. For this reason, in this structure, the main body 2 is composed of male and female members, so that the mounting operability with respect to the first member is improved, or the buffer clip 1 used as in claim 5 is disengaged again. To facilitate recovery. That is, the mounting operability to the first member is, for example, in the above-described multiple-use mode in a state where each buffer clip 1 is temporarily assembled as shown in FIG. After being inserted into each 71, by pressing them simultaneously from the buffer member 3 side, the elastic engagement portions 54 of each buffer clip 1 are expanded as shown in FIG. Can be attached.
In addition, the flange portion 51 accommodates the entire head 41 in the recess 50 with the male member 4 pushed into the female member 5 and the elastic engagement portion 54 expanded. The lower surface of the buffer portion 31 is brought into contact with the end surface of the recess. For this reason, in this configuration, the appearance characteristics can be improved by making the male member 4 invisible in use.
[0008]
The present invention as described above is more preferably embodied as in claims 2 to 3 .
First, the mounting hole portion 40 is partitioned by a peripheral wall 46 forming the head portion 41 and upper and lower flanges 44 and 45 integrated with the peripheral wall, and is substantially similar to the connection base portion 33. An engagement hole 40a, a guide groove 44a provided in the upper flange for guiding the movement of the neck 32, a center hole 44b communicating with the guide groove and engaging the neck, and provided in the peripheral wall And an opening 43a that enables the connecting portion to move to the engaging hole portion. This enables the buffer member 3 to be held in the main body 2 in a stable state at all times by the engagement of the connection base 33 with the engagement hole 40a and the engagement of the neck 32 with the center hole 44b, that is, the engagement force at two locations. . In this case, it is preferable that the engagement hole 40a and the connection base 33 are made non-circular and the like so as to be unrotatable as in the embodiment.
Second , the female member 5 is engaged so that the elastic engagement portion 54 can be switched to the original reduced diameter state again from the body attachment state in which the elastic engagement portion 54 is expanded through the male member 4. The release means 53 is provided. The disengagement means 53 is used when the engagement of the elastic engagement portion with respect to the attachment hole of the first member is released and the buffer clip is removed from the first member. To make it easier.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. FIG. 1 shows the procedure for attaching the buffer clip to the first member and the operation in the attached state. FIG. 1A shows the state where the buffer clip is inserted into the attachment hole of the first member, and FIG. The clip is fixed. FIG. 2 is an exploded view of the buffer clip. 3A and 3B show a buffer member. FIG. 3A is a perspective view, FIG. 3B is a side view, and FIG. 3C is a bottom view. 4 and 5 show a male member, FIG. 4 (a) is a front view, FIG. 4 (b) is a side view, FIG. 4 (c) is a top view, and FIG. 4 (d) is a bottom view. 5A is a cross-sectional view taken along line AA in FIG. 4C, FIG. 5B is a cross-sectional view taken along line BB in FIG. 4A, and FIG. 5C is a cross-sectional view taken along line C-- in FIG. FIG. 6A and 6B show a female member, wherein FIG. 6A is a front view, FIG. 6B is a cross-sectional view taken along line E-E in FIG. 6C, FIG. 6C is a top view, and FIG. FIG.
[0010]
(Outline) In the buffer clip 1 of the embodiment, the main body 2 has the elastic engagement portion 54 and the buffer member 3, and the main body 2 is attached to the attachment hole 71 of the first member 70 via the elastic engagement portion 54. The first member 70 and the second member 72 can be brought into contact with each other via the buffer member 3. For example, when the second member 72 is moved in the direction of the first member 70, the shock is relaxed and absorbed by the buffer member 3. Same as the previous point. The contrivance lies in the structure of the male / female members 4 and 5 of the main body 2 and the mounting structure of the buffer member 3 on the main body 2. In the following description, each member constituting the buffer clip 1 will be described in detail together with the assembly procedure, and then reference will be made to the mounting operation and operation to the first member. The buffer member 3 and the male / female members 4 and 5 are both resin molded products, but the buffer member 3 may be made of rubber.
[0011]
(Buffer member) The buffer member 3 attached to the main body 2 includes a buffer portion 31 that receives an impact as shown in FIG. 3, a neck portion 32 projecting from the lower surface of the buffer portion 31, and a connection coupled to the lower end of the neck portion 32. The base 33 is formed. The buffer portion 31 has a small circular block shape, and the upper and lower edges are chamfered. The neck portion 32 has a substantially circular cross section and connects the buffer portion 31 and the coupling base portion 33. As shown in FIG. 3C, the connecting base 33 is a non-circular plate formed by opposed horizontal sides 33a and 33a and arcuate sides 33c and 33d connecting both sides of the horizontal sides 33a and 33a. It is. The manufacturing method is a two-color molded product in which the buffer portion 31 is formed of a soft resin excellent in shock absorption, and the neck portion 32 and the connecting base portion 33 are formed of a hard resin.
[0012]
(Male / female member) The male / female members 4 and 5 constituting the main body 2 have a mounting hole 40 for mounting the buffer member 3, and are temporarily assembled so that they cannot be separated from each other. The elastic engagement portion 54 is expanded by a pressing operation of the male member 4 and can be switched from the temporarily assembled state to the main body attachment state (state fixed to the attachment hole 71), and the main body 2 is changed from the main body attachment state to the elastic engagement portion. It is the most preferable embodiment that has all the requirements such as having an opening 53 for disengaging means that makes it possible to recover the original 54 in the non-expanded state.
[0013]
Here, the male member 4 integrally forms an upper head portion 41 and an insertion shaft portion 42 provided below the head portion 41. A mounting hole 40 is provided in the head 41. The mounting hole 40 is integrated via the peripheral wall 43 of the head 41 and has upper and lower flanges 44 and 45 forming an engagement hole 40a therebetween, and a guide groove 44a and a guide provided in the upper flange 44. A central hole 44b communicating with the groove 44a and an opening 43a provided in the peripheral wall 43 and communicating with the engagement hole 40a are defined. That is, the engagement hole 40 a has a horizontal hole shape that is substantially similar to the connection base 33. The guide groove 44a has a large outside, and a portion 44d reaching the center hole 44b has a groove width smaller than the diameter of the neck portion 32. The center hole 44 b is an engagement hole that engages with the neck portion 33. Therefore, in this structure, when the buffer member 3 is moved in the radial direction with respect to the mounting hole 40 as shown in FIG. 2, the coupling base 33 is pushed into the engagement hole 40a from the opening 43a and engaged, The neck 32 is pushed into the center hole 44b while being guided by the guide groove 44a, and is engaged and mounted. In this mounted state, the buffer member 3 is held immovably with respect to the male member 4 by the engaging force of the coupling base portion 33 and the engaging hole portion 40a, the engaging force of the neck portion 32 and the central hole 44b, and the retaining action of the portion 44d. Yes. On the other hand, the insertion shaft portion 42 is positioned on the head 41 side and has a large-diameter shaft portion 47 projecting a plurality of wide ribs 47a on the outer periphery, and a plurality of narrow shafts positioned on the distal end side. A small-diameter shaft portion 48 projecting from the outer periphery of the rib 48a and a locking step 49 provided around the boundary between the shaft portions 47 and 48 are provided. The ribs 47a are respectively provided at portions that divide the circumference of the large-diameter shaft portion 47 into four equal parts, and the height is gradually reduced by a downward taper from the middle, and the rib width is also narrowed. The ribs 48a are provided in correspondence with the ribs 47a, and form the outer diameter of the small-diameter shaft portion 48, that is, the most depressed depression part for temporary assembly between the ribs 48a.
[0014]
The female member 5 integrally forms an upper cylindrical flange portion 51 and an elastic engagement portion 54 provided below the flange portion 51. The flange portion 51 forms a recess 50 that can be fitted to the head portion 41. The recess 50 has such a size that the lower end surface of the buffer portion 31 is brought into contact with the end surface of the recess in a state in which the entire head 41 is accommodated, and is provided on the bottom surface of the recess so as to lower the insertion shaft portion 42. It has a through hole 52 that can be pushed in the direction, and a disengagement opening 53 that is provided in a part of the surrounding wall and communicates the inside and outside of the recess 50. The opening 53 is an operation of inserting a tool such as a screwdriver under the lower flange 45 of the head 41 and then pulling it out from the state where the head 41 is fitted in the recess 50. To make it easier. The elastic engagement portion 54 is provided in a state where the cylinder is equally divided by the four upper and lower slits 55, and is composed of four pieces having the same shape. The upper and lower slits 55 are composed of a wide slit portion 55a corresponding to the rib 47a and a small slit portion 55b located on the tip side and corresponding to the rib 48a. Therefore, the schematic shape of each elastic engagement portion 54 corresponds to the upper and lower slits 55, the upper portion between the wide slit portions 55a is narrow, and the lower portion between the narrow slit portions 55b is smaller than that. Is also slightly thicker. As shown in FIG. 1B, the length of the insertion shaft portion 41 protrudes slightly in the final locking state described later in which the insertion shaft portion 42 is inserted into the cylinder (inside) between the elastic engagement portions 54 to the maximum as shown in FIG. Dimensions. The inner diameter of the cylinder formed by the elastic engagement portions 54 is formed on a locking claw portion 54b whose tip 54a side is slightly larger and the upper diameter is smaller, and the upper side thereof is substantially the same as the large-diameter shaft portion 47. Or slightly larger. That is, in this structure, when the insertion shaft portion 42 is pushed into the cylinder between the elastic engagement portions 54, the locking claw portion 54 b engages with the hollow portion that is the outer diameter of the small-diameter shaft portion 48 described above. Thus, the male / female members 4 and 5 are connected in a temporarily assembled state as shown in FIG. Further, when the insertion shaft portion 42 is further pushed into the cylinders of the elastic engagement portions 54, each of the elastic engagement portions 54 b slides on the shaft portion whose diameter gradually increases from the recess portion. As shown in FIG. 1B, the elastic engagement portions 54 are expanded to the maximum, and are finally engaged with the engaging step 49 while expanding and swinging.
[0015]
(Mounting operation to the first member) In the buffer clip 1 described above, the buffer member 3 is mounted in the mounting hole 40 of the male member 4 and the male member 4 is temporarily assembled to the female member 5 as described above. It is transported as an integrated product or put into an assembly line such as an automobile. In FIG. 1, the first member 70 is composed of a body panel 70 </ b> A and a bumper material 70 </ b> B, and has a large number of attachment holes 71 formed therethrough. The second member 72 is a bonnet. In this example, a plurality of buffer clips 1 are used. The placement step of inserting the elastic engagement portions 54 of the buffer clips 1 into the corresponding mounting holes 71 as shown in FIG. And the elastic engagement portion 54 of the female member 5 constituting each buffer clip 1 as shown in FIG. 1B is expanded by the insertion shaft portion 46 of the male member 4, The first member 70 can be fixed together. For this reason, in this structure, automation using a robot is easy, and the installation work time can be shortened. Further, it is possible to increase the retaining force or the fixing force with respect to the mounting hole 71 of the first member 70. This is because the elastic engagement part is formed in an expanded state as shown in FIG. 7 and is restored to the original expanded state when it passes through the mounting hole while being reduced in diameter. This is because the joint portion 54 is formed in a non-expanded state, and the type in which the joint portion 54 is expanded by pushing the male member 4 into the mounting hole 71 is likely to increase.
[0016]
(Main operation) The buffer clip 1 attached to the first member 70 relaxes and absorbs the impact applied from the second member 72 by the buffer portion 31 of the buffer member 3. In this structure, the buffer member 3 forms the mounting hole 40 by the engaging force of the coupling base 33 and the engaging hole 40a, the engaging force of the neck 32 and the central hole 44b, and the retaining action of the portion 44d. 41, and the head portion 41 is housed in the recess 50 of the female member side flange portion 51. Therefore, even if the buffer portion 31 is greatly elastically deformed due to an excessive impact, the neck portion 32, etc. As long as is not cut, there is no fear that the buffer member 3 will come off from the main body 2, and the quality and reliability can be improved. Moreover, in this structure, the shape setting of the buffer part 31 is arbitrary, and since only the buffer part 31 and the flange part 51 of the female member 5 are visually observed in use, the appearance appearance can be improved. Moreover, in this structure, when the buffer clip 1 is removed from the first member 70 again, the engagement between the locking claw portion 54b and the locking level difference 49 can be easily released using the above-described opening 53 and recovered. . That is, the operator inserts a tool such as a screwdriver under the lower flange 45 of the head 41 from the opening 53 of the flange portion 51 and operates to push up the lower flange 45. Then, the male member 4 releases the engagement of the locking step 49 with respect to the locking claw 54b, moves upward together with the buffer member 3, and is switched to the temporarily assembled state of FIG. The part 54 becomes the original reduced diameter state. For this reason, the buffer clip 1 can be easily pulled out from the mounting hole 71.
[0017]
In addition, this invention should just be equipped with the technical element specified by a claim, and is not restrict | limited at all to the said form. As an example, the neck portion 32 of the buffer member 3 is formed in a rectangular cross section, and the center hole 44b of the upper flange 44 of the male member 4 is also formed into a rectangular hole to engage the neck portion 32 in a non-rotatable manner. Further, as the engagement release means, instead of the opening 53, the elastic engagement portion is reduced in its original diameter by forcibly turning the male member as described in Japanese Utility Model Publication No. 6-45048. It is possible to switch to a state.
[0018]
【The invention's effect】
As described above, in the buffer clip of the present invention, compared to the conventional structure, the buffer member is moved in the radial direction with respect to the main body, and the neck portion and the connecting base portion are engaged with the mounting hole portion. Assembly workability can be improved. In addition, even if an excessive impact is applied to the buffer portion and the entire buffer member is reduced and displaced in the vertical direction, there is no possibility that the neck portion and the coupling base are disengaged from the mounting hole portion, and the body of the buffer member is eliminated. The mounting state can be reliably maintained. Furthermore, since it is not restricted by the shape etc. of a buffer part, the external appearance characteristic in use condition can be improved.
[Brief description of the drawings]
FIG. 1 is a view showing an attachment procedure and operation of a buffer clip according to an embodiment of the invention.
FIG. 2 is a schematic configuration diagram showing the buffer clip in an exploded manner.
FIG. 3 is a detailed configuration diagram illustrating a buffer member of the buffer clip.
FIG. 4 is a detailed configuration diagram showing a male member of the buffer clip.
FIG. 5 is a cross-sectional view of the male member of FIG.
FIG. 6 is a detailed configuration diagram showing a female member of the buffer clip.
FIG. 7 is a diagram for explaining a problem of a conventional buffer clip.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Buffer clip 2 ... Main body 3 ... Buffer member (31 is a buffer part, 32 is a neck part, 33 is a connection base)
4 ... Male member (41 is head, 42 is insertion shaft)
5 ... Female member (51 is a flange part, 50 is a recess, 54 is an elastic engaging part)
40 ... Mounting hole (43 is surrounding wall, 44 and 45 are upper and lower flanges)
43a ... opening 44a ... guide groove 44b ... engagement center hole 53 ... opening (engagement release means)
70 ... 1st member (71 is a mounting hole)
72. Second member

Claims (3)

The main body has an elastic engaging portion for attachment and a buffer member mounted on the upper side, and is attached to the attachment hole of the first member via the elastic engaging portion, and the first member and the second member are connected to each other. In the buffer clip that enables contact with the buffer member,
The buffer member has a buffer part that comes into contact with the second member, a neck part provided on the buffer part, and a connecting base part connected to the neck part,
The main body comprises a male member and a female member that are temporarily assembled,
The male member includes an upper head portion, an insertion shaft portion provided on the head portion, and a neck portion and a connecting base portion provided in the head portion in a radial direction from an outer peripheral side of the head portion to a central side. It has a mounting hole that can hold the buffer member by engaging with the neck and the connecting base by moving,
The female member is disposed on the mounting hole of the first member and can be fitted with the head portion. The flange portion forms a recess with a through hole for the insertion shaft portion. The elastic engagement portion that is provided and expanded by the insertion shaft portion that is pushed from the through hole;
Further, in the state where the male member is pushed into the female member and the elastic engagement portion is expanded, the flange portion accommodates the entire head in the recess and the lower surface of the buffer portion is A shock-absorbing clip that abuts against the end face of the recess .  The mounting hole portion is defined by a peripheral wall forming the head and an upper and lower flange integrated with the peripheral wall, and is substantially similar to the connection base portion. A guide groove provided to guide the movement of the neck, a center hole communicating with the guide groove and engaged with the neck, and provided in the peripheral wall so that the connecting portion can be moved to the engagement hole. The shock-absorbing clip according to claim 1, further comprising: an opening.  The female member has an engagement release means for switching the elastic engagement portion from the main body attachment state in which the elastic engagement portion is expanded through the male member to the original non-expanded state again. The buffer clip according to claim 1.

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