CN212685447U

CN212685447U - Connection structure

Info

Publication number: CN212685447U
Application number: CN202021602004.4U
Authority: CN
Inventors: 西村良
Original assignee: Toyota Boshoku Corp
Current assignee: Toyota Boshoku Corp
Priority date: 2019-08-07
Filing date: 2020-08-05
Publication date: 2021-03-12
Anticipated expiration: 2030-08-05
Also published as: JP2021025601A

Abstract

Provided is a connection structure which can reduce connection failures in connection work performed by a device and can improve the efficiency of visual inspection of a connection portion. The connection structure includes: a connecting member (60) which is composed of a rod part (60A) and a head part (60B); a 1 st member (50) having an engaging portion (62) with which the lever portion (60A) is engaged; and a 2 nd member (52) having a connected portion (68), the connected portion (68) being formed with a through hole (68A) through which the rod portion (60A) passes, the connecting structure being formed by connecting the 1 st member (50) and the 2 nd member (52) by the connector (60), wherein a convex portion (70) is formed around the head portion (60B) of a surface of the 2 nd member (52) which the head portion (60B) of the connector (60) contacts, at the connected portion (68) of the 2 nd member (52).

Description

Connection structure

Technical Field

The present invention relates to a connection structure in which two members are connected.

Background

Patent document 1 listed below describes a door trim as an interior trim for a vehicle. The door trim includes a main plate, an armrest, a garnish, a decorative panel, and an upper plate, and these members are fixed to each other using mounting screws as coupling members. Patent document 1 below shows a connection portion between a garnish base material and a decorative panel constituting a garnish, and the garnish base material and the decorative panel are connected by using a plurality of mounting screws.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2016-41561

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

In a case where members are assembled using a plurality of links as in the door trim described in patent document 1, in recent years, the coupling work using a plurality of links is sometimes performed using a device such as a robot. However, there is a problem that a connection failure occurs in the connection work by the device, and after the connection work by the device, the inspection is often performed by human visual observation.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a connection structure that can reduce connection failures in connection work performed by a device and can achieve high efficiency of visual inspection of a connection portion.

Means for solving the problems

In order to solve the above problem, the present invention provides a connection structure, comprising: a connecting piece which is composed of a rod part and a head part; a 1 st member having an engaging portion with which the lever portion is engaged; and a 2 nd member having a connected portion formed with a through hole through which the rod portion passes, the connection structure being formed by connecting the 1 st member and the 2 nd member by the connector,

in the portion to be connected of the 2 nd member, a convex portion is formed around the head portion of a surface of the connector with which the head portion contacts.

In the coupling structure having this configuration, the projection is formed around the coupling, and after the 2 nd member is coupled to the 1 st member by the device, the presence or absence of the coupling failure can be determined by observing the position (positional deviation) of the head of the coupling with reference to the projection when the inspection is performed by human visual observation. That is, with the connection structure having this configuration, inspection by visual inspection of the connection portion can be made more efficient. In order to observe the positional displacement of the head portion of the coupler, it is desirable that the convex portion is disposed so as to surround the head portion of the coupler, and is formed as a circular ridge, a plurality of projections disposed at intervals around the head portion, or a ridge. In addition, a device for performing the coupling operation may include a cylindrical guide member that holds the coupling member inside. In the case of using such a device, even when the position of the guide member after the movement of the device is shifted from the connection portion, the guide member can be guided to the inside of the convex portion by the convex portion to bring the guide member closer to the connection portion. Therefore, the connection structure having this configuration can contribute to reduction of connection failure when performing connection work using a device provided with a cylindrical guide member.

In the above configuration, the following configuration may be adopted: the projection is formed so that the tip end is positioned on the circumference around the through hole.

In the coupling structure having this configuration, the projection may be, for example, a circular projection extending along the circumference, a plurality of arc-shaped projections extending along the circumference, or a plurality of protrusions arranged at intervals on the circumference. In the connection structure having this configuration, for example, when the distance between the circle formed by the convex portion and the head of the connection portion is not uniform, it can be determined that the possibility of the occurrence of the connection failure is high. Therefore, the coupled structure having this structure can be inspected more efficiently by visual inspection. In addition, the connection structure having this configuration can easily guide the cylindrical guide toward the center of the circle, that is, the center of the through hole, and can further suppress the occurrence of connection failure.

In the above configuration, the following configuration may be adopted: the protruding portion is formed of a plurality of ribs extending in the radial direction around the through-hole, and the plurality of ribs are arranged at equal angular intervals.

In the coupling structure having this configuration, when the coupling portion is visually inspected from the side, the engagement state of the coupling with the engagement portion can be confirmed between the rib and the rib, and therefore, the inspection can be easily performed visually as compared with the case where the protruding portion is a circular ridge.

In the above configuration, the following configuration may be adopted: the height of the tip of the projection is the same as the height of the head of the coupler or slightly higher than the height of the head of the coupler.

In the coupling structure having this configuration, for example, when the head of the coupling protrudes upward from the projection, it can be determined that there is a high possibility of a coupling failure. Therefore, the connection structure having this configuration can be visually inspected from the side even when the protruding portion is a circular ridge, for example. In addition, the connection structure having this configuration can confirm the presence or absence of a connection failure by directly touching the convex portion and the head portion of the connector to confirm the height.

Effect of the utility model

According to the present invention, it is possible to provide a connection structure that can reduce connection failures in connection work performed by a device and can improve efficiency of visual inspection of a connection portion.

Drawings

Fig. 1 is a perspective view of a door trim of a vehicle side door as a connection structure according to an embodiment of the present invention, from a viewpoint of a vehicle interior side.

Fig. 2 is an exploded view of the door trim shown in fig. 1.

Fig. 3 is a sectional view (a-a section of fig. 1) showing a main portion of the door trim shown in fig. 1 from a viewpoint of a vehicle rear side.

Fig. 4 is a view schematically showing a coupling structure according to an embodiment of the present invention, and is a perspective view showing a state before the coupling is coupled.

Fig. 5 is a plan view showing a state before the coupling unit of the coupling structure according to the embodiment of the present invention is coupled.

Fig. 6 is a perspective view of the robot arm that performs the connecting operation by the connecting unit in the connecting structure according to the embodiment of the present invention.

Fig. 7 is a side sectional view showing a state where the robot arm shown in fig. 6 performs a coupling operation.

Fig. 8 is a side sectional view showing a state where the robot arm shown in fig. 6 performs a coupling operation.

Fig. 9A is a side sectional view of the connection portion in a case of normal connection.

Fig. 9B is a side cross-sectional view of a connection portion in the case where a connection failure occurs.

Fig. 10 is a plan view of the coupling structure normally coupled by the coupling.

Fig. 11 is a view showing a coupling portion of a coupling structure according to a modification, and is a perspective view showing a state before coupling of the coupling.

Fig. 12A is a side cross-sectional view of a connection portion in a case where the connection structure of the modified example is normally connected.

Fig. 12B is a side cross-sectional view showing a case where a connection failure occurs at the time of connecting the connection structural bodies of the modified example.

Fig. 12C is a side cross-sectional view showing another connection failure occurring when the connection structural bodies of the modified example are connected.

Description of the reference numerals

20. A decorative plate (connecting structure); 40. a handrail plate; 42. 1, decorating a plate; 44. a middle lower plate; 46. a midrange speaker carrier plate; 48. an upper middle plate; 50. 2, decorating the plate; 52. an upper plate; 60. a screw (coupling member); 60A, an external thread part (rod part); 60B, a head; 62. a mounting boss (engaging portion); 66. mounting a sheet; 66A, a through hole; 68. a mounting piece (coupled portion); 68A, a through hole; 70. a convex portion; 100. a 1 st member; 102. a 2 nd member; 112. mounting a boss; 114. a boss main body portion (engaging portion); 116. a plurality of ribs; 120. a main body portion; 122. mounting a sheet; 124. a through hole (through hole); 124A, an opening edge portion; 126. a plurality of ribs (projections); 126A, upper end face; 126B, an inclined surface; 130. a 2 nd member; 132. a convex portion; 132A, an upper surface; 134. a through hole (through hole); 150. a mechanical arm; 156A, screw guide; 156B, a drill bit.

Detailed Description

Hereinafter, as a mode for carrying out the present invention, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following examples, and can be implemented in various forms in which various modifications and improvements are made based on the knowledge of those skilled in the art.

The connection structure according to the embodiment of the present invention is applied to a door trim 10 as a vehicle interior trim. The door trim 10 constitutes a cabin inner portion of a side door for a vehicle. As shown in fig. 1 and 2, the door trim 10 is configured with a trim panel 20 as a main body, and includes various functional components such as an inside handle 21, an armrest 22, a door handle 23, a door pocket 24, a speaker bracket 25, and a squawker grill 26 provided on the trim panel 20 in addition to the trim panel 20.

The decorative plate 20 is formed by assembling a plurality of plate members to each other by joining or the like, and the decorative plate 20 becomes a joined structure of the present invention. The decorative panel 20 is configured by fixing another panel member to the lower panel 30 while the lower panel 30 is a main body. The lower plate 30 includes a main body portion 32, a pair of protruding portions 34 protruding upward from front and rear end portions of the main body portion 32 in the vehicle longitudinal direction, and an extending portion 36 extending so as to connect upper ends of the pair of protruding portions. The speaker bracket 25 is provided on the lower side of the main body portion 32 in the vehicle front direction.

The decorative panel 20 includes a handrail plate 40, a 1 st decorative plate 42, a middle lower plate 44, a middle speaker bracket plate 46, a middle upper plate 48, a 2 nd decorative plate 50, and an upper plate 52 in addition to the lower plate 30, and is arranged in this order from the lower side. The armrest panel 40, the middle-lower panel 44, the middle-upper panel 48, and the upper panel 52 are formed by attaching a skin material to a base material. The armrest 22 and the door handle 23 are formed by coupling the armrest plate 40 to the upper side of the main body portion 32 of the lower plate 30 (substantially the center of the decorative plate 20). Further, the inside handle 21 is provided to the middle lower plate 44.

The plurality of plate members are assembled by connecting with screws or by thermal caulking. For example, as shown in fig. 3, the upper middle plate 48, the 2 nd decorative plate 50, and the upper plate 52 are coupled by a screw 60 as a coupling member. Specifically, the 2 nd decorative panel 50 is integrally provided with a mounting boss 62 protruding toward the vehicle compartment outer side, and the mounting boss 62 is configured by a cylindrical boss body portion 62A and a plurality of ribs 62B protruding in the radial direction from the outer peripheral surface of the boss body portion 62A. As shown in fig. 2 and 3, the upper plate 48 is provided with a plurality of attachment pieces 66 projecting upward, and the upper plate 52 is provided with a plurality of attachment pieces 68 projecting downward. Through

holes

66A, 68A through which the boss main body portion 62A of the mounting boss 62 is inserted are formed in the mounting piece 66 of the middle upper plate 48 and the mounting piece 68 of the upper plate 52, respectively.

When assembling the three

plate members

48, 50, 52, first, the boss main body portion 62A is inserted into the through hole 66A in the 2 nd decorative plate 50, and the upper middle plate 48 is placed on the rib 62B. Next, the upper plate 52 is placed on the upper plate 48 by inserting the mounting bosses 62 into the through holes 68A. Then, the male screw portion 60A of the screw 60 is screwed into the mounting boss 62, and the mounting

pieces

66 and 68 of the upper plate 48 and the upper plate 52 are sandwiched between the head portion 60B of the screw 60 and the rib 62B of the mounting boss 62, whereby the upper plate 48, the 2 nd decorative plate member 50, and the upper plate 52 are coupled together.

That is, at the coupling portion, the 2 nd decorative plate 50 functions as the 1 st member, and has the mounting boss 62 as an engaging portion with which the male screw portion 60A as the shaft portion of the screw 60 is engaged, and the upper plate 52 functions as the 2 nd member, and has the mounting piece 68 as the coupled portion. The connection structure of the present embodiment is characterized in that the attachment piece 68 of the upper plate 52 as the 2 nd member has a projection 70 formed around the head 60B of the screw 60 on the surface thereof with which the head 60B contacts.

The convex portion will be described in detail below. In the decorative panel 20, the present invention is applied to a plurality of positions such as a mounting position where the handle panel 40 is mounted to the lower panel 30, a mounting position where the 1 st decorative panel 42 is mounted to the handle panel 40 and the lower panel 30, and a mounting position where the midrange speaker bracket 46 is mounted to the upper panel 48, and the like, and depending on the connecting position, a certain panel member may function as the 1 st member and may function as the 2 nd member. Therefore, in the following description, the connection structure of the present invention includes the 1 st member 100, the 2 nd member 102, and the screw 60 as the connector, and in a form in which the 1 st member 100 and the 2 nd member 102 are connected by the screw 60, the convex portion which is a feature of the connection structure will be described in detail with reference to fig. 4 to 10.

The 1 st member 100 has a plate-like main body portion 110 and a mounting boss 112 as an engaging portion provided so as to project from the main body portion 110, similarly to the 2 nd decorative panel 50 described above, and the mounting boss 112 is configured by a boss main body portion (engaging portion) 114 and a plurality of ribs 116 (4 in the present embodiment, only two of which are illustrated in fig. 4). On the other hand, as shown in fig. 4 and 5, the 2 nd member 102 is composed of a plate-shaped body 120 and a mounting piece 122 provided to protrude outward from the outer edge of the body 120, and a through hole (through hole) 124 penetrating in the thickness direction is formed at a portion where the mounting piece 122 is provided. The opening edge 124A of the through hole 124 is thicker than the surrounding thickness and is formed to protrude to the side opposite to the 1 st member 100. A plurality of ribs 126 (4 in the present embodiment) extending in the radial direction around the through hole 124 are formed so as to be continuous with the outer peripheral surface of the opening edge portion 124A.

The plurality of ribs 126 are arranged at equal angular intervals around the through hole 124. Each of the ribs 126 has the same shape, and as shown in fig. 7, has a substantially trapezoidal shape in side view, and has an inclined surface 126B inclined downward from the upper end surface 126A toward the opening edge 124A (through hole 124). Therefore, as shown in fig. 5, the upper end surface 126A of each rib 126 is located on the circumference centering on the through hole 124 in a plan view. That is, in this connection structure, it can be considered that the convex portion 70 is formed by the plurality of ribs 126.

When the 1 st member 100 and the 2 nd member 102 are assembled, first, the mounting bosses 112, more specifically, the boss main body portions 114 of the 1 st member 100 are inserted into the through holes 124 of the 2 nd member 102, and the 2 nd member 102 is placed on the plurality of ribs 116 of the 1 st member 100. Then, the screw 60 is screwed into the boss main body portion 114 of the mounting boss 112, whereby the opening edge portion 124A of the 2 nd member 102 is sandwiched between the head portion 60B of the screw 60 and the rib 116 of the mounting boss 112, and the 1 st member 100 and the 2 nd member 102 are coupled.

Since the decorative plate 20 as the connection structure has many connection portions to be connected by the screws 60, the decorative plate 20 is connected by the robot arm 150 shown in fig. 6. In the robot arm 150, a screw attaching unit 154 (hereinafter, may be simply referred to as "attaching unit 154") is held at the tip end of the arm portion 152, and the screw attaching unit 154 is used to continuously perform the coupling operation by the screw 60. The mounting unit 154 includes a screw holding portion 156 for holding the screw 60 and a screw supplying portion 158 for supplying the screw 60 to the screw holding portion 156. As shown in fig. 7, the screw holding portion 156 includes a substantially cylindrical screw guide 156A, and sucks the screw 60 supplied from the screw supply portion 158 to suck and hold the screw 60 in the screw guide 156A. The screw holding portion 156 holds the screw 60 by suction with the screw guide 156A, and then lowers a bit (driver) 156B coaxially disposed inside the screw guide 156A, and holds the screw 60 by magnetic force with the bit 156B. Then, when the robot arm 150 moves the tip (lower end) of the screw guide 156A to the connection position, the drill 156B is further lowered while being rotated, and screwed into the mounting boss 112.

In the above-described robot arm 150, the screw guide 156A extends in the vertical direction, and therefore, as shown in fig. 7, the tip of the screw guide 156A may be offset in the horizontal direction. However, in this connection structure, since the plurality of ribs 126 are formed around the through hole 124, as shown in fig. 8, the tip of the screw guide 156A is guided to the opening edge 124A. In particular, since each of the plurality of ribs 126 has the inclined surface 126B inclined downward toward the opening edge portion 124A, the tip end of the screw guide 156A can be more reliably guided to the opening edge portion 124A. Therefore, in the operation of fastening the screw 60 by the robot arm 150, it is possible to suppress the occurrence of a connection failure such as screwing the screw 60 into the gap between the outer peripheral surface of the boss main body portion 114 of the mounting boss 112 and the inner peripheral surface of the through hole 124 or screwing the screw 60 obliquely as shown in fig. 9B.

The decorative plate 20 as the connection structure is inspected by visual observation of an operator after the connection operation by the robot arm 150. For example, even when the above-described connection failure occurs, the connection failure can be easily found in the visual inspection based on the positional relationship between the plurality of ribs 126 and the head 60B of the screw 60 as shown by the two-dot chain line in fig. 10. Therefore, with this connection structure, the inspection can be efficiently performed by visual inspection.

In this connection structure, since the upper end surfaces 126A of the plurality of ribs 126 constituting the projection 70 are located on one circumference, it is easy to determine the positional displacement of the head 60B of the screw 60 with respect to the plurality of ribs 126, and the inspection can be performed more efficiently by visual inspection. Further, since the upper end surfaces 126A of the plurality of ribs 126 are located on one circumference, even when the screw guide 156A is displaced in any direction, the screw guide 156A is easily guided toward the through hole 124, which is the center of the plurality of ribs 126, and occurrence of a connection failure can be further suppressed.

< modification example >

In the connection structure of the above embodiment, the projection 70 is constituted by the plurality of ribs 126, but the shape of the projection is not limited thereto. Fig. 11 and 12 show a coupling portion of a coupling structure as a modification of the above embodiment. The shape of the 2 nd member 130, more specifically, the shape of the projection 132 provided in the 2 nd member 130 is different from the shape of the 2 nd member 102 constituting the coupling structure of the above-described embodiment in the coupling structure of the modified example. Specifically, the convex portion 132 of the 2 nd member 130 of the present modification is a circular protruding strip that protrudes to the side opposite to the 1 st member 100 with the through hole (through hole) 134 as the center. Therefore, the connection structure of the present modification can easily determine the positional displacement of the head 60B of the screw 60 in the visual inspection, and can perform the inspection more efficiently. In the connection structure of the present modification, since the projection 132 surrounds the entire periphery of the through hole 134, the screw guide 156A can be reliably guided to the through hole 134 during the connection operation by the robot arm 150.

In the connection structure of the above embodiment, since the projection 70 is formed of the plurality of ribs 126, the connection portion can be visually recognized from the gap between the ribs 126 and the ribs 126 in the inspection by visual observation from the side, and thus the inspection by visual observation from the side is facilitated. In contrast, in the connection structure of the present modification, the entire connection portion is surrounded by the convex portion 132, and therefore, as in the above-described embodiment, the inspection cannot be performed by visual inspection from the side. However, as shown in fig. 12A, the coupling structure of the present modification is formed such that the upper surface 132A of the projection 132 is slightly higher than the head 60B of the screw 60 to be normally coupled. Therefore, when a connection failure occurs as shown in fig. 12B and 12C, the head 60B of the screw 60 projects upward from the projection 132. Therefore, the connection structure of the present modification can be inspected by visual inspection from the side. In addition, with the coupling structure of this modification, for example, the coupling failure can be found by comparing the height of the head 60B of the screw 60 and the height of the upper surface 132A of the projection 132 by touching the coupling portion.

< other embodiments >

The connection structure of the above embodiment is the decorative plate 20 constituting the door trim 10 for a vehicle, but is not limited thereto. For example, the connection structure of the present invention can be used for a connection structure for connecting two other members of a vehicle. Further, the present invention can be widely applied to a connection structure in which two members are connected by a connection member using a device such as the robot arm 150 as described above, among members constituting a vehicle-other passenger tool or a structure other than a passenger tool.

Claims

1. A connection structure body is characterized in that,

the connection structure includes: a connecting piece which is composed of a rod part and a head part; a 1 st member having an engaging portion with which the lever portion is engaged; and a 2 nd member having a connected portion formed with a through hole through which the rod portion passes, the connection structure being formed by connecting the 1 st member and the 2 nd member by the connector,

2. The connection structure according to claim 1, wherein,

the projection is formed so that the tip end is positioned on the circumference around the through hole.

3. The connection structure according to claim 2, wherein,

the protruding portion is formed of a plurality of ribs extending in the radial direction around the through-hole, and the plurality of ribs are arranged at equal angular intervals.

4. The connection structure according to any one of claims 1 to 3, wherein,

the height of the tip of the projection is the same as the height of the head of the coupler or slightly higher than the height of the head of the coupler.