JP4985578B2 - Article mounting structure - Google Patents

Description

  The present invention relates to an article mounting structure for fitting an article to a main body by fitting a clamp member provided on either the main body or the article to a ball joint provided on either the main body or the article. .

Conventionally, a mounting structure in which a pair of claws of a clamp member provided on the article side is fitted to a ball joint provided on the main body side and the article is attached to the main body is known (for example, Patent Documents). 1).
Japanese Utility Model Publication No. 61-196821

  In such a mounting structure, when a flat portion is formed at the tip of the ball joint, when trying to fit the pair of claws of the clamp member to the ball joint, the tip of one of the claws May be deformed by interfering with (contacting with) the flat portion.

  When the claw part is deformed in this way, the load when fitting is increased, the assembly workability is deteriorated, and the clamp member is assembled to the ball joint with the deformed claw part. The product may come off the main body during use.

  Then, an object of this invention is to obtain the attachment structure of the article | item which can prevent the deformation | transformation of the nail | claw part of the clamp member fitted to a ball joint in view of the said situation.

In order to achieve the above object, a mounting structure for an article according to claim 1 according to the present invention is provided on one side of the main body and the article, and a ball joint having a flat portion formed at the tip, and the main body And a socket that is provided on either side of the article, and that covers the ball joint, and a pair of claws that fit into the ball joint are inserted into a slit formed in the socket, thereby the socket A clamp member held on the edge portion of the slit member that is in contact with the claw portion before the clamp member is fitted to the ball joint. And a claw part interval expanding member for making the distance larger than the maximum length of the flat part of the ball joint.

  According to invention of Claim 1, the distance between nail | claw parts of a clamp member can be made larger than the maximum length of the flat part of a ball joint by a nail | claw part space | interval expansion member. Therefore, when the clamp member is fitted to the ball joint, the claw portion of the clamp member does not interfere with (striking) the flat portion. Therefore, deformation of the claw portion of the clamp member can be prevented.

In addition, the distance between the claw parts of the clamp member is made larger than the maximum length of the flat part of the ball joint, so that the claw part of the clamp member is inserted into the slit part formed in the socket and the clamp member is held in the socket. Can only be realized .

That is, before the clamp member is fitted to the ball joint, the claw portion spacing extension member is formed on the edge portion of the slit portion that contacts the claw portion of the clamp member. It can be easily realized to be larger than the maximum length of the flat portion of the ball joint.

The article mounting structure according to claim 2 is characterized in that, in the article mounting structure according to claim 1 , the main body is a vehicle, and the article is a damper member for opening and closing a back door. .

Since the deformation | transformation of the nail | claw part of a clamp member can be prevented according to invention of Claim 2 , the assembly work efficiency at the time of assembling the damper member for a back door opening and closing to a vehicle can be improved.

According to a third aspect of the present invention, there is provided the article mounting structure according to any one of the main body and the article, the ball joint having a flat portion formed at the tip, and the other side of the main article and the article. A clamp member having a plurality of claw portions fitted to the ball joint, and provided between the claw portions of the clamp member, and before the clamp member is fitted to the ball joint, And a claw part interval expansion member for making the diameter of a virtual inscribed circle connecting the tips of the claw parts larger than the maximum length of the flat part of the ball joint.

According to the third aspect of the present invention, the diameter of the virtual inscribed circle connecting the tips of the claw portions of the clamp member can be made larger than the maximum length of the flat portion of the ball joint by the claw portion interval expanding member. Therefore, when the clamp member is fitted to the ball joint, the claw portion of the clamp member does not interfere with (striking) the flat portion. Therefore, deformation of the claw portion of the clamp member can be prevented.

  As described above, according to the present invention, it is possible to provide an article mounting structure that can prevent deformation of the claw portion of the clamp member to be fitted to the ball joint.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described below in detail based on the embodiments shown in the drawings. In addition, the arrow UP shown in FIGS. 1 and 2 is the vehicle upward direction, and the arrow FR is the vehicle front direction. The arrow OUT is the direction outside the vehicle.

  FIG. 1 is a schematic perspective view showing an embodiment in which a mounting structure according to the present invention is applied to a damper member (article) for opening and closing a back door of a vehicle, and FIG. 2 is a ball joint and a socket constituting the mounting structure according to the present invention. It is a schematic perspective view which shows a clamp member. 3 to 6 are schematic sectional views showing a process of fitting the claw portion of the clamp member to the ball joint.

  As shown in FIG. 1, the mounting structure 10 according to the present invention includes a pair of left and right damper stays (damper members / articles) 30 used when, for example, opening and closing a back door 16 of a vehicle 12. It can be applied when mounted on the 14th side.

  That is, as shown in FIG. 2, the ball joints 20 are opposed to each other through the mounting and fixing brackets 18 on the left and right frame portions 14 </ b> A constituting the opening 15 of the vehicle body 14 that is opened and closed by the back door 16. Is provided. A flat surface (flat portion) 24 is formed at the tip portions 22 of the ball joint 20 facing each other. The flat surface 24 is formed so as not to coincide with the maximum diameter portion 28 of the ball joint 20 as shown in FIGS.

  On the other hand, as shown in FIG. 1, the pair of left and right damper stays 30 is, for example, a double cylinder type, and a piston rod 32 that slides with a predetermined resistance force by oil, gas pressure, or the like enclosed in the damper stay 30. Respectively. And the front-end | tip part (upper end part in FIG. 1) 34 of each piston rod 32 is connected with the inner surface of the back door 16 via the attachment fixing bracket 36. FIG.

  As shown in FIG. 2, a substantially hollow hemispherical socket 40 that covers the ball joint 20 is integrally provided via a mounting rod 38 at the bottom (lower end in FIG. 1) of each damper stay 30. ing. The socket 40 is opened on the direction side perpendicular to the axial center direction (sliding direction) of the damper stay 30 and the piston rod 32, and covers each ball joint 20 from the inner side in the left-right direction (vehicle width direction). It is like that.

  As shown in FIGS. 3 to 6, the spherical portion 42 of the socket 40 has slit portions 44 and 46 into which a pair of claw portions 54 and 56 of a clamp member 50 to be described later can be inserted at a predetermined interval. Is formed. The slit portions 44 and 46 are slightly longer than the width of the clamp member 50 (the claw portions 54 and 56) (the length in the direction perpendicular to the paper surface), and can allow the claw portions 54 and 56 to expand. It is formed at such an interval (width).

  As shown in the figure, the clamp member 50 is formed of a metal such as iron (spring steel) in a substantially “C” shape in a cross-sectional view, and has an inner surface 52A formed along the outer surface 42A of the spherical portion 42 of the socket 40. A main body portion 52 having a pair of claw portions 54 and 56 extending inward from the both longitudinal ends of the main body portion 52 so as to approach each other (in a state inclined at a predetermined angle). , Is composed of.

  Therefore, when the claw portions 54 and 56 are expanded, an inward load is generated on the claw portions 54 and 56, whereby the clamp member 50 is held by the socket 40. . That is, when the claw portions 54 and 56 are inserted into the slit portions 44 and 46, the inner side edge portions (contact portions) 44A and 46A of the slit portions 44 and 46, as will be described later, The parts 54 and 56 are expanded.

  Therefore, when the claw portions 54 and 56 are inserted into the slit portions 44 and 46 and the inner surface 52A of the main body portion 52 is attached to the outer surface 42A of the spherical surface portion 42, the claw is caused by the inward load generated by the expanding operation. The inner surfaces of the base portions 54A and 56A of the portions 54 and 56 are in pressure contact (contact) with the edge portions 44A and 46A (between the claw portions 54 and 56) of the slit portion 44, and the clamp member 50 is a spherical portion of the socket 40. 42 is engaged and held on the outer surface 42A side.

  Further, the claw portions 54 and 56 of the clamp member 50 are fitted to the ball joint 20 on the inner surface 42B side of the spherical surface portion 42 of the socket 40. That is, when the claw portions 54 and 56 of the clamp member 50 protruding into the socket 40 are fitted to the ball joint 20 from the front end portion 22 (flat surface 24) side, the front ends of the claw portions 54 and 56 are obtained. The parts 54 </ b> B and 56 </ b> B are expanded by the spherical part 26 that continues from the flat surface 24.

  And if the front-end | tip parts 54B and 56B of the nail | claw parts 54 and 56 exceed the largest diameter part 28 in the spherical surface part 26 of the ball joint 20, it will be by the restoring force (elastic force) of the expanded nail | claw parts 54 and 56. The tip portions 54B and 56B are locked to the ball joint 20. As a result, the clamp member 50 is fitted into the ball joint 20, and the socket 40 is put on and held by the ball joint 20.

  Also, the edge portions 44A and 46A of the slit portions 44 and 46 (socket 40) are present between the base portions 54A and 56A of the claw portions 54 and 56 of the clamp member 50 and the inner surfaces of the base portions 54A and 56A are in pressure contact (contact). 2), the distance D between the tip portions 54B and 56B of the claw portions 54 and 56 of the clamp member 50 before the fitting of the clamp member 50 to the ball joint 20 is set to the flat surface 24 of the ball joint 20. A claw interval expanding member 48 for making the maximum length (diameter) L larger is provided.

  That is, the claw portion interval expansion member 48 is configured by devising the shape of the edge portions 44A and 46A, and is formed integrally (continuously) with the socket 40. That is, as shown in the cross-sectional views of FIGS. 3 to 6, the edge portions 44 </ b> A and 46 </ b> A (the claw portion spacing expansion member 48) are more conventional on the inner surface 42 </ b> B side than on the outer surface 42 </ b> A side. It is extended toward the outer side (the claw portions 54 and 56 side) from the positions (indicated by phantom lines K in FIGS. 3 to 6) of the edge portions 144A and 146A (see FIG. 7) of the comparative example. It has a shape.

  In other words, this nail | interval space | interval expansion | extension member 48 (edge part 44A, 46A) is substantially triangular of the outer side (nail | claw part 54,56 side) rather than the virtual line K in the cross sectional view of FIGS. The site | part which makes a shape becomes the shape integrally provided in the edge parts 144A and 146A (refer FIG. 7) of the former (comparative example), and exists between the base parts 54A and 56A of the nail | claw parts 54 and 56. A part of the socket 40 is configured.

  Therefore, when the claw portions 54 and 56 of the clamp member 50 are inserted into the slit portions 44 and 46, the base portions 54A and 56A side of the claw portions 54 and 56 are automatically moved outward from the prior art by the edge portions 44A and 46A. As a result, the distance D between the tip portions 54B and 56B of the claw portions 54 and 56 is made larger (expanded) than the maximum length L of the flat surface 24 of the ball joint 20.

  That is, it is possible to increase (expand) the distance D between the tip portions 54B and 56B of the claw portions 54 and 56 of the clamp member 50 to be larger than the maximum length L of the flat surface 24 of the ball joint 20. The portions 54 and 56 can be easily realized simply by inserting them into the slit portions 44 and 46.

  Next, the operation of the mounting structure 10 configured as described above will be described. First, a comparative example shown in FIGS. 7 and 8 in which the claw part interval expanding member 48 is not provided will be described. As shown in FIG. 7, even in the case of the socket 140 of the comparative example in which the claw interval expanding member 48 is not provided, the pair of claw portions of the clamp member 150 is formed in the slit portions 144 and 146 formed in the spherical surface portion 142. By inserting 154 and 156, the clamp member 150 (main body portion 152) is engaged and held by the socket 140 (spherical surface portion 142).

  At this time, the edge portions 144A and 146A of the slit portions 144 and 146 are in pressure contact (contact) with the inner surfaces of the base portions 154A and 156A of the claw portions 154 and 156 of the clamp member 150. The distance D between the front end portions 154B and 156B of 156 is smaller than the maximum length (diameter) L of the flat surface 24 of the ball joint 20 (D <L).

  Therefore, as shown in FIG. 8A, when the claws 154 and 156 of the clamp member 150 are to be fitted to the ball joint 20, for example, the socket 140 is inclined in the extending direction of the clamp member 150. As a result, as shown in FIG. 8B, the tip 154B of one of the claw portions 154 may interfere with the flat surface 24 and be deformed.

  When the claw portion 154 is deformed in this way, the load when fitting is increased and the assembling workability is deteriorated, and the clamp member is attached to the ball joint 20 by the deformed claw portion 154 and the undeformed claw portion 156. Since 150 is assembled, there is a possibility that the damper stay 30 is detached from the vehicle body 14 due to a pseudo-fitting state (fitting failure).

  In addition, the claw portions 154 and 156 of the clamp member 150 are inserted into the slit portions 144 and 146 formed in the socket 140 (spherical surface 142) as described above, so that the clamp member 150 is connected to the socket 140 (spherical surface portion). 142), the state in which the claw portions 154 and 156 are fitted cannot be seen from the outside unless the socket 140 (spherical surface portion 142) is translucent or transparent. Therefore, the assembling operator does not know that the claw portion 154 is deformed and assembled.

  Therefore, in this embodiment, as shown in FIGS. 3 to 6, when the clamp member 50 is engaged and held in the socket 40 by the claw portion interval extending member 48 formed integrally with the socket 40 (the slit portion). When the claw portions 54 and 56 are inserted into the 44 and 46), the distance D between the tip portions 54B and 56B of the claw portions 54 and 56 of the clamp member 50 is larger than the maximum length (diameter) L of the flat surface 24. It is configured to be large (D> L).

  According to this, when the claw portions 54 and 56 of the clamp member 50 are fitted to the ball joint 20, the claw portions 54 and 56 do not interfere with the flat surface 24 (the probability of hitting the flat surface 24 is extremely low). Therefore, the claw portions 54 and 56 are not deformed. Accordingly, there is no problem that the load when fitting the clamp member 50 is increased and the assembling workability is deteriorated, and the fitting failure of the clamp member 50 to the ball joint 20 does not occur (fitting failure). Occurrence can be greatly reduced).

  More specifically, when assembling the damper stay 30 to the vehicle main body 14, the assembling operator engages the ball joint 20 of the vehicle main body 14 with the nail of the clamp member 50 that is engaged and held by the socket 40 of the damper stay 30. The parts 54 and 56 are fitted. That is, as shown in FIG. 3, the pair of claw portions 54 and 56 of the clamp member 50 are brought close to the tip portion 22 (flat surface 24) of the ball joint 20.

  At this time, the distance D between the tip portions 54B and 56B of the claw portions 54 and 56 is larger than the maximum length L of the flat surface 24 of the ball joint 20 (D> L). As shown, the claw portions 54 and 56 always come into contact with and engage with only the spherical surface portion 26 of the ball joint 20. Therefore, the assembly work efficiency when the damper stay 30 is assembled to the vehicle main body 14 can be improved (the load when the clamp member 50 is fitted to the ball joint 20 can be reduced).

  In this way, when the claw portions 54 and 56 of the clamp member 50 do not interfere with (hit) the flat surface 24 of the ball joint 20 and slide into contact (fit) with the continuous spherical surface portion 26 from the flat surface 24, As shown in FIG. 5, the claw portions 54 and 56 gradually start to expand by the spherical portion 26. At this time, the interval (width) between the slit portions 44 and 46 is formed to be large enough to allow the amount of expansion of the claw portions 54 and 56, so that the claw portions 54 and 56 are connected to the slit portions 44 and 56. 46 does not come into contact with the outer side edge portions 44B and 46B.

  When the claw portions 54 and 56 of the clamp member 50 are further slidably contacted (fitted) to the spherical surface portion 26 of the ball joint 20, and the tip portions 54B and 56B exceed the maximum diameter portion 28 of the spherical surface portion 26, As shown in FIG. 6, the claw portions 54 and 56 are locked to the ball joint 20 by the restoring force (elastic force) of the claw portions 54 and 56 of the clamp member 50.

  That is, at this time, the inner surfaces of the claw portions 54 and 56 on the base portions 54A and 56A side do not come into contact with the edge portions 44A and 46A, and the spherical surface portion 26 of the ball joint 20 is moved by the claw portions 54 and 56. It can be pressed (held). Therefore, the clamp member 50 is fitted to the ball joint 20 with a sufficient holding force, and the socket 40 is put on and held by the ball joint 20.

  In this way, the damper stay 30 is attached to the vehicle main body 14. However, as described above, the claw portions 54 and 56 of the clamp member 50 do not cause poor fitting to the ball joint 20. Therefore, the malfunction that the damper stay 30 comes off from the vehicle main body 14 does not occur.

  Further, the distance D between the tip portions 54B and 56B of the claw portions 54 and 56 of the clamp member 50 is made larger than the maximum length L of the flat surface 24 of the ball joint 20, that is, the claw portions 54 and 56 of the clamp member 50. The configuration for managing the assembly position (fitting position) with respect to the ball joint 20 can be realized only by devising the shape of the socket 40. Therefore, the configuration can be easily realized and is advantageous in terms of manufacturing cost.

  As described above, the shape of the edge portions 44A and 46A is such that the distance D between the tip portions 54B and 56B of the claw portions 54 and 56 is larger than the maximum length L of the flat surface 24 of the ball joint 20. If it is devised (when the claw part interval expansion member 48 is provided), the pressure contact force of the claw parts 54 and 56 with respect to the edge parts 44A and 46A can be increased as compared with the conventional (comparative example). . Therefore, in the case of the present embodiment, there is also an advantage that the clamp member 50 can be prevented from being further detached from the socket 40.

  The mounting structure 10 according to the present invention has been described based on the embodiment shown in the drawings. However, the present invention is not limited to the illustrated embodiment, and is appropriately designed within the scope of the present invention. It can be changed. For example, the nail | interval space | interval expansion | extension member 48 is not limited to what is comprised integrally with the socket 40, The thing of the structure attached to the socket 40 as a separate body may be sufficient.

  Further, when a concave portion (not shown) that allows the thickness of the main body portion 52 of the clamp member 50 is formed in the outer surface 42A of the spherical portion 42 of the socket 40, and the main body portion 52 of the clamp member 50 is mounted in the concave portion. The main body portion 52 of the clamp member 50 hardly protrudes from the outer surface 42A of the spherical surface portion 42 (the outer surface 52B of the main body portion 52 of the clamp member 50 and the outer surface 42A of the spherical surface portion 42 of the socket 40 are substantially flush). It may be configured.

  Further, in the mounting structure 10 according to the present embodiment, the socket 40 is provided, but the present invention can also be applied to the case where the socket 40 is not provided. In this case, the claw portions of the clamp member 50 are desirably three or more (not shown) arranged at equal intervals. In this case, a virtual inscribed circle (not shown) is connected between the base portions of the claw portions of the clamp member 50 before the clamp members 50 are fitted to the ball joint 20 before the tips of the claw portions of the clamp member 50 are connected. ) To be larger than the maximum length (diameter) L of the flat surface 24 of the ball joint 20 (for example, a disk-shaped member: not shown) may be provided.

The schematic perspective view which shows the Example which applied the attachment structure which concerns on this invention to the damper member for backdoor opening and closing of a vehicle The schematic perspective view which shows the ball joint, socket, and clamp member which comprise the attachment structure which concerns on this invention Schematic cross-sectional view showing the state before fitting the claw portion of the clamp member to the ball joint Schematic sectional view showing a state in which the claw portion of the clamp member has started to be fitted to the ball joint Schematic sectional view showing a state in the middle of fitting the claw portion of the clamp member to the ball joint Schematic cross-sectional view showing the state after fitting the claw portion of the clamp member to the ball joint Schematic sectional view showing a state before fitting the claw portion of the clamp member of the comparative example to the ball joint (A) Schematic sectional view showing a state in which the claw portion of the clamp member of the comparative example has begun to be fitted to the ball joint, (B) Deformation to fit the claw portion of the clamp member of the comparative example to the ball joint Schematic cross-sectional view showing a closed state

Explanation of symbols

10 Mounting Structure 12 Vehicle 14 Vehicle Body (Main Body)
15 Opening 16 Back Door 20 Ball Joint 24 Flat Surface (Flat)
26 Spherical section 30 Damper stay (damper member / article)
32 Piston rod 40 Socket 42 Spherical surface portion 44 Slit portion 44A Edge portion (contact portion)
46 Slit part 46A Edge part (contact part)
48 Claw-part interval expansion member 50 Clamp member 52 Body part 54 Claw part 56 Claw part

Claims (3)

A ball joint provided on one side of the main body and the article and having a flat portion formed at the tip;
A socket provided on the other side of the main body and the article and covering the ball joint;
A clamp member held in the socket by inserting a pair of claw portions fitted into the ball joint into the slit portion formed in the socket;
Before the fitting of the clamp member to the ball joint, it is formed at the edge portion of the slit portion that contacts the claw portion, and before the fitting, the distance between the claw portions of the clamp member is set to the flat portion of the ball joint. A claw part interval expansion member for making it larger than the maximum length of
An article mounting structure characterized by comprising: It said body is a vehicle, the mounting structure of the article of claim 1, wherein the article is characterized by a damper member der Rukoto for back door. A ball joint provided on one side of the main body and the article and having a flat portion formed at the tip;
A clamp member provided on either the main body or the article and having a plurality of claw portions fitted to the ball joint;
The diameter of a virtual inscribed circle that is provided between the claw portions of the clamp member and connects the tips of the claw portions of the clamp member before fitting the clamp member to the ball joint is the maximum length of the flat portion of the ball joint. A claw interval expansion member for making it larger than the thickness,
Mounting structure of the article you comprising the.

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