JP7360146B2 - Test jig - Google Patents

Description

The present invention relates to a test jig that fixes a vehicle body part to be tested and reproduces a state in which the vehicle body part is mounted on a vehicle body.

Conventionally, there are test jigs that are used to reproduce the state in which the parts are mounted on the car body when inspecting the assembly accuracy or conducting various tests such as durability tests on the interior and exterior parts of automobiles. . There are roughly two types of such test jigs.

For example, there is a model jig that imitates a part of a vehicle body, as disclosed in Patent Document 1. A vehicle body part to be tested is fixed to a model jig, and the assembled state is inspected by reproducing the state in which the vehicle body part is mounted on the vehicle body.

Furthermore, if a jig that matches the actual item is used as a test jig instead of a model jig, the manufacturing cost of the test jig can be reduced. The actual fitting jig is a jig that is equipped with multiple fixtures to fix vehicle body parts to a base, and is manufactured by adjusting the angle and position of the fixtures to match the vehicle body part after the body part to be tested is completed. It is a jig for

The inventor of the present application has also proposed a test jig disclosed in Patent Document 2. This test jig is a board with a plurality of holes in which a measuring tool can be attached and detached using bolts, and can be positioned by aligning a mark provided near the hole with a mark provided on the measuring tool. It is possible to perform performance evaluation and functional evaluation of automobile parts in a short time.

Registered utility model No. 2520557 Japanese Patent Application Publication No. 2017-003552

The model jig described in Patent Document 1 has the advantage of high accuracy because it is precisely modeled using an NC processing machine or the like using vehicle body design data. On the other hand, there were drawbacks such as long construction times and low versatility, and the need to manufacture for each car model with a different design, resulting in enormous costs. If the accuracy of the test jig is poor, there will be no correlation between the data when the car body parts are fixed to the test jig and when they are actually mounted on the car body, making it impossible to derive accurate test results. However, it has been impractical from a cost standpoint to use highly accurate model jigs for all vehicle body parts.

In addition, the jig for spot matching has the advantage of keeping costs low, but since it is manufactured to fit the body part after the body part to be tested is completed, the jig can be tested immediately after the body part is completed. cannot start. Furthermore, since the positioning of the fixtures is almost done manually, there is a drawback of poor accuracy.

The test jig described in Patent Document 2 had a low manufacturing cost and was able to improve accuracy more than the actual jig, but when assembling the test jig, misalignment occurs in position and angle. Because of this, the accuracy was inferior compared to the model jig.

The present invention has been made in view of these points, and its purpose is to provide a test jig with low manufacturing cost and high precision.

In order to achieve the above object, in the present invention, the first fastening hole provided in the base and the second fastening hole provided in the substrate of the fixture are made to match, and the plurality of flat plate members constituting the fixture include: A hole and a press-fitting part were provided, and the fixture was assembled by press-fitting the press-fitting part into the hole.

That is, the first invention is
A fixing device provided on a vehicle body part to be tested to which an attachment part to the vehicle body is fixed, and a base having a flat fixing surface to which the fixing device is attached. In a test jig that reproduces the state in which car body parts are mounted on a car body,
The base has a first fastening hole that opens to the fixing surface,
The fixture is composed of a plurality of flat plate members,
The flat plate member includes at least
a substrate having a second fastening hole that coincides with the first fastening hole and fixed by a fastening member in an overlapping state with respect to the fixed surface;
a first side plate member and a second side plate member each extending in a direction intersecting the substrate from mutually separated portions of the surface of the substrate opposite to the base;
a reinforcing member installed between the first side plate member and the second side plate member and connecting the first side plate member and the second side plate member;
an attachment reinforcing member attached to the tip portions of the first side plate member and the second side plate member,
A base end press-fitting part is formed in one of the base end part of the first side plate member and the base end part of the second side plate member and the base plate so as to protrude toward the other, and A proximal hole portion into which the proximal press-fitting portion is press-fitted is formed;
A tip press-fit portion is formed on one of the tip portions of the first side plate member, the tip portion of the second side plate member, and the mounting reinforcing member so as to protrude toward the other, and the tip press-fit portion is formed on the other side so as to protrude toward the other. A tip hole portion into which the press-fitting part is press-fitted is formed,
One of the first side plate member and the reinforcing member is formed with a first lateral press-fitting part so as to protrude toward the other, and the other side is formed with a first lateral press-fitting part into which the first lateral press-fitting part is press-fitted. A lateral hole is formed,
A second lateral press-fit portion is formed in one of the second side plate member and the reinforcing member so as to protrude toward the other, and a second lateral press-fit portion is formed in the other, into which the second lateral press-fit portion is press-fit. A lateral hole is formed,
The attachment portion of the vehicle body part is attached to the tip of the fixture via the attachment reinforcing member.

According to this configuration, the fixture is constructed from a plurality of flat plate members cut out from a flat plate-shaped material, and thus the manufacturing cost is low. Furthermore, since the first fastening hole provided in the base matches the second fastening hole provided in the base plate of the fixing device, the mounting precision of the fixing device to the base is high, and the workability in manufacturing is also excellent.

Furthermore, each of the flat plate members constituting the fixture has a base end press-fitting part and a base end hole part, a distal press-fitting part and a distal end hole part, a first side press-fitting part and a first side hole part, and a second side press-fitting part and a first side hole part. A lateral press-fit portion and a second side hole are formed, and the fixture is assembled by press-fitting each press-fit portion into the corresponding hole. Since it is difficult to press-fit each flat plate member unless its dimensions are accurate, the assembled fixture has very high precision. Therefore, by fixing the vehicle body parts to the test jig of the present invention, the state in which they are actually mounted on the vehicle body can be reproduced with high precision.

In addition, in the present invention, the external dimensions of the press-fitting part and the internal dimensions of the hole are formed to substantially match, and inserting the press-fitting part thus formed into the hole is referred to as "press-fitting". Say.

The second invention is, in the first invention,
The second fastening hole is provided between the first side plate member and the second side plate member.

According to this configuration, by providing the second fastening hole between the first side plate member and the second side plate member, it is possible to minimize the size of the board. Therefore, the substrate is less likely to be distorted, and deterioration in accuracy can be prevented.

A third invention is, in the first or second invention,
The attachment reinforcing member has a removable attachment member on a side of the vehicle body component to which the attachment portion is attached, and the attachment portion is attached in contact with the attachment member.

According to this configuration, the surface of the mounting reinforcing member on which the mounting portion of the vehicle body part is attached may be deformed or damaged by replacing the vehicle body part. Even if it deteriorates, it can be removed and replaced with a new one, and there is no need to manufacture a new test jig entirely.

A fourth invention is, in the third invention,
The mounting member has a flat plate shape,
The first side plate member and the second side plate member are characterized in that their tip portions are formed at substantially the same angle as the mounting angle of the mounting portion of the vehicle body component.

According to this configuration, by being attached to the tip portions of the first side plate member and the second side plate member, the attachment member can be formed at substantially the same angle as the opposing attachment portion. Since flat mounting members can be manufactured at low cost, it is possible to provide a test jig at low cost that can reproduce the state in which vehicle body parts are actually mounted on the vehicle body with high precision.

A fifth invention is, in the third invention,
The attachment member is characterized in that it has a three-dimensional shape that imitates a part of the vehicle body to which the vehicle body component is attached.

According to this configuration, the mounting member is precisely shaped using an NC processing machine using, for example, the design data of the car body, and is made into a three-dimensional shape that imitates the part of the car body to which the car body part is attached. It can be used as an accurate test jig.

A sixth invention is any one of the first to fifth inventions,
The base has a plurality of first fastening holes at approximately equal intervals,
The fixing device may be fixed in a predetermined first fastening hole selected depending on the type of the vehicle body part.

According to this configuration, even if the position of the fixing device differs depending on the type of vehicle body part to be tested, since the base has a plurality of first fastening holes, the second fastening hole of the fixing device is connected to the predetermined first fastening hole. can be fixed together. One base can be used for multiple car body parts by replacing the fixtures, increasing its versatility as a test jig.

A seventh invention is any one of the first to sixth inventions,
The base end hole, the distal end hole, the first side hole, and the second side hole are substantially rectangular openings, and each corner of the substantially rectangular shape has an opening. It is characterized in that an expansion part is formed that bulges outward so that the area is expanded.

According to this configuration, each corner of the opening can be machined without temporarily stopping the processing machine when processing the base end hole, the distal end hole, the first side hole, and the second side hole. Since it can be formed, manufacturing efficiency is good.

According to the present invention, manufacturing costs can be kept low by configuring the fixture with a plurality of flat plate members. In addition, the first fastening hole provided in the base and the second fastening hole provided in the base plate of the fixing device are made to match, and a proximal end press-fit portion and a proximal end hole are provided in each flat plate member constituting the fixing device. , a tip press-fit part and a tip hole part, a first side press-fit part and a first side hole part, and a second side press-fit part and a second side hole part, and each press-fit part corresponds to each hole. By configuring the fixture to be assembled by being press-fitted into the parts, when the vehicle body parts are secured to the test jig of the present invention, the state in which they are actually mounted on the vehicle body can be reproduced with high precision.

FIG. 2 is a perspective view showing a test jig according to the first embodiment. FIG. 3 is a perspective view of the base according to the first embodiment. FIG. 2 is a perspective view of the fixture according to the first embodiment. FIG. 2 is a plan view of the substrate according to the first embodiment. FIG. 2 is a sectional view of a main part of the test jig according to the first embodiment. It is a top view of the 1st side plate member and the 2nd side plate member based on 1st Embodiment. FIG. 3 is a plan view of the reinforcing member according to the first embodiment. FIG. 3 is a side view of the reinforcing member according to the first embodiment. It is a top view of the attachment reinforcement member concerning a 1st embodiment. FIG. 3 is a plan view of the mounting member according to the first embodiment. FIG. 7 is a plan view of a substrate showing a modified example of a hole. FIG. 7 is a perspective view showing a modification of the fixture. FIG. 7 is a perspective view of a fixture according to a second embodiment. FIG. 7 is a plan view of a substrate according to a second embodiment. It is a top view of the 1st side plate member based on 2nd Embodiment. It is a top view of the 2nd side plate member based on 2nd Embodiment. FIG. 7 is a plan view of a reinforcing member according to a second embodiment. It is a top view of the attachment reinforcement member based on 2nd Embodiment. FIG. 7 is a side view of a mounting member according to a second embodiment. It is a perspective view showing an example of use of a test jig. FIG. 7 is a perspective view of a base according to another embodiment.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that the following description of preferred embodiments is essentially just an example, and is not intended to limit the present invention, its applications, or its uses.

In some of the drawings, the direction in which the vehicle body part is fixed when viewed from the fixing device is indicated by an arrow as the "distal end", and the opposite direction, the direction in which it is fixed to the base, is indicated by an arrow as the "proximal end". Unless otherwise specified, directions will be described according to the directions indicated by these arrows.

<First embodiment>
FIG. 1 is a perspective view showing a test jig 1 according to an embodiment of the present invention. As shown in FIG. 1, the test jig 1 consists of a fixture 2 provided on a vehicle body part V to be tested, to which a mounting portion W to the vehicle body is fixed, and a flat surface to which the fixture 2 is attached. A base 3 having a surface 31 is provided to reproduce a state in which a vehicle body part V fixed to a fixture 2 is mounted on a vehicle body. For example, the vehicle body part V is a bumper of an automobile, etc., and is fixed to the test jig 1, and the test jig 1 is placed in a test room in a high temperature environment, etc., and a durability test is performed.

In Fig. 1, the vehicle body parts V fixed to the test jig 1 and their attachment parts W are shown by two-dot chain lines, but these are virtual shapes shown for convenience of explanation, and the vehicle body The shapes of the parts and their attachment parts are not limited.

(Base configuration)
FIG. 2 is a perspective view of the base 3 according to the embodiment of the invention. As shown in FIGS. 1 and 2, the base 3 includes a support section 32 assembled from a plurality of square members, and a flat plate-shaped plate section 30 supported by the support section 32. The plate portion 30 has a fixing surface 31 to which the fixture 2 is attached. In the present embodiment, the fixing surface 31 is arranged above the support part 32 in an inclined state, but since the angle of the fixing surface 31 varies depending on the type of the vehicle body part V to be fixed, there is no particular limitation. It may also be horizontal.

Furthermore, the base 3 has a first fastening hole 3 a that opens into the fixing surface 31 . The first fastening holes 3a are provided corresponding to the number and position of the second fastening holes 4a provided in the base plate 4 of the fixture 2. In this embodiment, four first fastening holes 3a are provided for one fixture 2, but there is no particular limitation as long as the number corresponds to the number of second fastening holes 4a.

The fixed surface 31 may be provided with an opening 31a. The opening 31a is formed in a size and position that does not affect the testing of the vehicle body part V. Since the plate portion 30 is made of a steel plate, the weight can be reduced by providing the opening 31a in the fixed surface 31.

Note that the fixed surface 31 may be processed to further increase its flatness, for example, by milling. By setting the fixing surface 31 to have a flatness equal to or higher than a predetermined level, it becomes possible to position the tips of the first side plate member 5 and the second side plate member 6 with higher accuracy in a state where the fixing tool 2 is attached.

(Configuration of fixture)
FIG. 3 is a perspective view of the fixture 2 according to the embodiment of the present invention. As shown in FIG. 3, the fixture 2 is composed of a plurality of flat plate members. The plurality of flat plate members are at least the substrate 4 fixed to the fixed surface 31 in an overlapping state, and the directions intersecting the substrate 4 from mutually distant parts of the surface of the substrate 4 opposite to the base 3. a first side plate member 5 and a second side plate member 6 that extend in the same direction, and a reinforcing member 7 that is constructed between the first side plate member 5 and the second side plate member 6 and connects the first side plate member 5 and the second side plate member 6. , an attachment reinforcing member 8 attached to the tip portions of the first side plate member 5 and the second side plate member 6. The fixture 2 also includes a mounting member 9 that is attached to the surface of the mounting reinforcing member 8 on the side to which the mounting portion W of the vehicle body component V is mounted, and is fixed in contact with the mounting portion W.

Each flat plate member is formed, for example, by cutting a steel plate with a thickness of 3.2 mm into a predetermined shape by laser processing. The thickness of each flat plate member is not limited. Further, the method of processing each flat plate member is not limited to laser processing, and wire cutting, electrical discharge machining, etc. can also be used, but laser processing is preferable from the viewpoint of cost.

In addition, in order for each press-fitting part 5a, 5c, 6a, 6c, 71a, 72a, 73 of each flat plate member mentioned later to be press-fitted into each corresponding hole part 4b, 4c, 5b, 6b, 8b, each press-fitting part The dimensions of the holes 5a, 5c, 6a, 6c, 71a, 72a, 73 and the corresponding holes 4b, 4c, 5b, 6b, 8b must substantially match. Therefore, each flat plate member has a drawing-indicated tolerance of 0 in laser processing. In addition, even if the error in the dimensions of each flat plate member after cutting is ±0.1 mm or less, the error in the completed test jig 1 is within the dimensional tolerance specified for the actual vehicle body ( For example, it may be allowed as long as it falls within the general tolerance of ±1.5 mm and the mounting hole pitch of ±0.7 mm.

(Substrate configuration)
FIG. 4 is a plan view of the substrate 4. As shown in FIGS. 3 and 4, the substrate 4 is a substantially rectangular flat plate member with chamfered corners, and is located on the proximal end side of the fixing device 2, and is superimposed on the fixing surface 31. is fixed.

The substrate 4 is provided with two first base end holes 4b, 4b at positions separated from each other in the longitudinal direction of the substrate 4. The first base end hole 4b is formed in a position and shape corresponding to the first base end press-fit parts 5a and 6a formed at the base ends of the first side plate member 5 and the second side plate member 6, respectively. The base end press-fit parts 5a and 6a are press-fitted. In this embodiment, the first base end hole 4b is a long rectangular opening having substantially the same internal dimensions as the external dimensions of the first base press-fit parts 5a, 6a, and having substantially right angle corners. The first base end hole 4b is formed such that the longitudinal direction of the substrate 4 is the short side, and the short side is the short side of the substrate 4. The first base end hole 4b has a short side equal to the thickness of the first base press-fit parts 5a, 6a, and a long side equal to the long side of the first base press-fit parts 5a, 6a.

A second base end hole 4c is provided approximately in the center between the two first base end holes 4b, 4b. The second base end hole 4c is formed in a position and shape corresponding to the second base end press-fitting part 73 formed at the base end of the reinforcing member 7, and the second base end press-fitting part 73 is press-fitted therein. In this embodiment, the second base end hole 4c is a rectangular opening having substantially the same internal dimensions as the external dimensions of the second base press-fitting part 73, and having substantially right angle corners. The long side of the second base end hole 4c is in the longitudinal direction of the substrate 4, and the short side is in the lateral direction of the substrate 4. The second base end hole 4c has a short side equal to the plate thickness of the second base press fit part 73, and a long side equal to the long side of the second base press fit part 73.

Further, the substrate 4 is provided with a second fastening hole 4a at a position opposite to the first fastening hole 3a. A pair of second fastening holes 4a located apart in the lateral direction of the substrate 4 are arranged at two locations apart in the longitudinal direction of the substrate 4 between the first base end holes 4b, 4b, and a total of four second fastening holes 4a are arranged apart in the longitudinal direction of the substrate 4. A fastening hole 4a is provided. The second fastening hole 4a matches the first fastening hole 3a. The first fastening hole 3a and the second fastening hole 4a are, for example, fastening holes having substantially the same hole diameter and having a circular cross section with a threaded groove formed on the inner wall. The second fastening hole 4a is preferably provided between the first side plate member 5 and the second side plate member 6.

FIG. 5 is a cross-sectional view of the main parts of the test jig according to the embodiment of the present invention, showing the fastening portion with the fixing surface 31 at the base end of the fixture 2, and the attachment of the vehicle body part V at the distal end. The fastening part with part W is shown. As shown in FIG. 5, the fastening member 10 is inserted into the base plate 4 from the fixed surface 31 so as to pass through the first fastening hole 3a and the second fastening hole 4a while the board 4 is superimposed on the fixed surface 31. 3 and the fixture 2 are fastened together.

(Configuration of first side plate member and second side plate member)
FIG. 6 is a plan view of the first side plate member 5 and the second side plate member 6. The first side plate member 5 and the second side plate member 6 have the same shape and are common parts. As shown in FIG. 6, the first side plate member 5 and the second side plate member 6 have a long side extending from the proximal side toward the distal side, a short side on the proximal side along the fixing surface 31, and a mounting portion W. It is formed into a long rectangular shape with the short side on the leading end side.

The proximal end portions of the first side plate member 5 and the second side plate member 6 include proximal end surfaces 5d and 6d that contact the substrate 4, and a first proximal press-fit portion 5a that is formed to protrude toward the substrate 4. , 6a. The first proximal end press-fit portions 5a, 6a are formed to protrude substantially perpendicularly from the proximal end surfaces 5d, 6d at approximately intermediate portions of the proximal end surfaces 5d, 6d. Further, the first base end press-fit portions 5a, 6a have approximately the same external dimensions as the internal dimensions of the first base hole portion 4b formed in the substrate 4, and have approximately right angle corners. The first base end press-fit parts 5a, 6a are press-fitted into the first base end hole 4b.

The first side plate member 5 and the second side plate member 6 are formed by press-fitting the first base end press-fit parts 5a and 6a into the two first base end holes 4b and 4b formed in the base board 4, respectively. 4 extend in a direction intersecting the substrate 4 from mutually separated portions of the surface opposite to the base 3 (tip side). In this embodiment, the intersecting direction is a direction substantially perpendicular to the substrate 4, but is not limited to the perpendicular direction.

The tip portions of the first side plate member 5 and the second side plate member 6 are formed to correspond to the mounting angle of the mounting portion W of the vehicle body part V. For example, in the present embodiment, the front end surfaces 5e and 6e of the first side plate member 5 and the second side plate member 6, which face the mounting portion W, are formed at substantially the same angle as the mounting angle on the opposing surface of the mounting portion W. has been done. Further, the first side plate member 5 and the second side plate member 6 are substantially perpendicular to the distal end surfaces 5e, 6e at approximately the middle of the distal end surfaces 5e, 6e, and are connected to the mounting reinforcing member 8 from the distal end surfaces 5e, 6e. It has tip press-fit parts 5c and 6c formed to protrude toward the front. The tip press-fit portions 5c, 6c have substantially the same external dimensions as the internal dimensions of the tip hole 8b formed in the attachment reinforcing member 8, and have substantially right-angled corners. The tip press-fit parts 5c, 6c are press-fitted into the tip hole 8b.

A first side hole 5b and a second side hole 6b are formed in the first side plate member 5 and the second side plate member 6, respectively. The first side hole 5b and the second side hole 6b are formed in positions and shapes corresponding to the first side press-fit part 71a or the second side press-fit part 72a formed in the reinforcing member 7, and The first side press-fit portion 71a or the second side press-fit portion 72a is press-fitted. In the present embodiment, the opening is a rectangular opening having substantially the same internal dimensions as the external dimensions of the first lateral press-fitting part 71a or the second lateral press-fitting part 72a, and having substantially right-angled corners. A plurality of the first side holes 5b and the second side holes 6b are formed at intervals in the longitudinal direction at substantially intermediate portions in the lateral direction of the first side plate member 5 and the second side plate member 6. The long sides of the first side hole 5b and the second side hole 6b extend along the longitudinal direction of the first side plate member 5 and the second side plate member 6. The short sides of the first lateral hole 5b and the second lateral hole 6b have dimensions equal to the thickness of the first lateral press-fit part 71a or the second lateral press-fit part 72a. The first side hole portion 5b and the second side hole portion 6b may be formed corresponding to the first side press-fit portion 71a or the second side press-fit portion 72a, and their positions and numbers are not limited.

(Configuration of reinforcing member)
7A is a plan view of the reinforcing member 7, and FIG. 7B is a side view of the reinforcing member 7. As shown in FIGS. 7A and 7B, the reinforcing member 7 is formed into a substantially elongated rectangular shape with a long side extending from the proximal end toward the distal end and a short side on the proximal end along the fixing surface 31. There is.

The proximal end of the reinforcing member 7 is substantially perpendicular to the proximal end surface 74 at a substantially intermediate portion between the proximal end surface 74 that contacts the substrate 4 and the proximal end surface 74, and is connected to the substrate from the proximal end surface 74. 4, and a second base end press-fitting part 73 formed to protrude toward 4. The second base end press-fitting part 73 has an outer dimension that is approximately the same as the inner dimension of the second base end hole 4c formed in the substrate 4, and has an approximately right angle corner.

Further, the reinforcing member 7 has a side end surface 75 that contacts the first side plate member 5 or the second side plate member 6, is substantially perpendicular to the side end surface 75, and extends from the side end surface 75 to the first side plate member 5 or the second side plate member 6. It has a plurality of first lateral press-fit parts 71a and second lateral press-fit parts 72a formed at intervals so as to protrude toward each other. The first lateral press-fitting part 71a and the second lateral press-fitting part 72a are the inner shapes of the first lateral hole 5b and the second lateral hole 6b formed in the first side plate member 5 and the second side plate member 6. It has approximately the same external dimensions and approximately right angle corners.

In the reinforcing member 7, between the first side plate member 5 and the second side plate member 6, the first lateral press-fitting part 71a is inserted into the first lateral hole 5b, and the second lateral press-fitting part 72a is inserted into the second lateral hole 5b. The first side plate member 5 and the second side plate member 6 are connected by being press-fitted into the holes 6b, respectively. Furthermore, the reinforcing member 7 reinforces the first side plate member 5 and the second side plate member 6 by press-fitting the second base end press-fitting part 73 into the second base end hole 4c.

(Configuration of mounting reinforcement member)
FIG. 8 is a plan view of the attachment reinforcing member 8. The mounting reinforcing member 8 is a substantially rectangular flat plate member with chamfered corners, and is mounted in contact with the tips of the first side plate member 5 and the second side plate member 6, so that the opposing mounting portions It is approximately the same angle as W.

The attachment reinforcing member 8 is provided with two tip holes 8b, 8b at positions separated from each other in the longitudinal direction of the attachment reinforcing member 8. The tip hole portion 8b is formed in a position and shape corresponding to the tip press-fit portions 5c, 6c formed at the tip portions of the first side plate member 5 and the second side plate member 6, respectively, and the tip press-fit portions 5c, 6c are press-fitted therein. Ru. In this embodiment, the tip hole portion 8b is a long rectangular opening having substantially the same internal dimensions as the external dimensions of the tip press-fit portions 5c and 6c, and having substantially right-angled corners. The tip hole portion 8b is formed such that the longitudinal direction of the attachment reinforcing member 8 is the short side, and the short side is the short side of the attachment reinforcing member 8. The tip hole 8b has a short side equal to the plate thickness of the tip press-fit parts 5c, 6c, and a long side equal to a long side of the tip press-fit parts 5c, 6c.

A third fastening hole 8a is provided approximately in the center between the two tip holes 8b, 8b. The third fastening hole 8a is formed in a position and shape corresponding to the mounting hole X provided in the mounting portion W of the vehicle body part V.

Further, the mounting reinforcing member 8 is formed with a hole 8c for mounting the mounting member 9 thereon. A pair of holes 8c located apart in the lateral direction of the attachment reinforcing member 8 are arranged at two locations apart in the longitudinal direction of the attachment reinforcing member 8 between the tip holes 8b, 8b, and a total of four holes 8c are provided. It is being

As shown in FIG. 5, the attachment reinforcing member 8 is attached along the attachment portion W by being attached in contact with the tip portions of the first side plate member 5 and the second side plate member 6. Then, the vehicle body part V is superimposed on the mounting member 9 attached to the mounting reinforcing member 8, and the mounting portion W is inserted so as to pass through the mounting hole X, the fourth fastening hole 9a, and the third fastening hole 8a. The fastening member 11 is inserted from the side. Thereby, the vehicle body part V is attached to the tip of the fixture 2 via the attachment reinforcing member 8.

(Configuration of mounting parts)
FIG. 9 is a plan view of the mounting member 9. The mounting member 9 is a substantially rectangular flat plate member with chamfered corners. The attachment member 9 is removably attached to the surface of the attachment reinforcing member 8 on the side to which the attachment portion W of the vehicle body part V is attached, for example, by screwing. The mounting portion W is mounted in contact with the mounting member 9.

The mounting member 9 is provided with a hole 9b at each corner to be fastened to a hole 8c provided in the mounting reinforcing member 8. The hole 9b matches the hole 8c provided in the attachment reinforcing member 8. The hole 8c of the mounting reinforcing member 8 and the hole 9b of the mounting member 9 are, for example, fastening holes having the same hole diameter and having a circular cross section with a screw thread groove formed on the inner wall, and are not welded but screwed. By screwing into the holes 8c and 9b, the mounting member 9 is removably attached to the mounting reinforcing member 8.

Further, the mounting member 9 is provided with a fourth fastening hole 9a that faces the third fastening hole 8a substantially in the center. The fourth fastening hole 9a is formed to have a predetermined hole diameter corresponding to the mounting hole X. The fourth fastening hole 9a overlaps the third fastening hole 8a provided in the mounting reinforcing member 8, and is fastened to the mounting hole X. The diameters of the third fastening hole 8a, the fourth fastening hole 9a, and the mounting hole X are not limited, but for example, when fastening the third fastening hole 8a and the fourth fastening hole 9a with a fastener, Since it becomes an escape hole, it is formed to have a larger hole diameter than the fourth fastening hole 9a. For example, in this embodiment, the diameter of the attachment hole X is 12 mm, the diameter of the fourth fastening hole 9a is 10 mm, and the diameter of the third fastening hole 8a is 15 mm.

The mounting member 9 is formed, for example, by cutting out a flat plate of the same material as the vehicle body part V having a thickness of 0.7 mm into a predetermined shape by laser processing. The thickness of the reinforcing member 9 is preferably the same as that of the part of the vehicle body to which the vehicle body part V is actually attached, and a steel plate having a thickness specified by the vehicle body part V to be attached is used.

Note that the holes 9a of the mounting member 9 may be formed by punching, and the mounting member 9 may be painted with the same sheet metal coating as the vehicle body. This makes it possible to further simulate the actual vehicle body, making it possible to perform more accurate performance evaluations.

(Assembling the fixture)
The base plate 4, the first side plate member 5, the second side plate member 6, the reinforcing member 7, and the mounting reinforcing member 8, which constitute the fixture 2, correspond to each press-fitting part 5a, 5c, 6a, 6c, 71a, 72a, 73. It is assembled by being press-fitted into each of the holes 4b, 4c, 5b, 6b, and 8b. Press-fitting is performed by, for example, hammering in using a hammer or the like.

It is desirable that the flat plate members constituting the fixture 2 be spot welded at the portions where they abut each other. It is desirable to perform spot welding in areas that do not affect distortion, for example, not near each press-fit part and each hole, but at each press-fit part and each hole shown by the broken circle frame in FIG. This is the corner Z that is far away from. By performing spot welding, the generation of distortion can be reduced more than by welding across the contact portion.

(Operations and effects of the first embodiment)
As explained above, according to the test jig 1 according to this embodiment, the fixture 2 is composed of a plurality of flat plate members cut out from a flat plate material, and thus the manufacturing cost is low. In addition, since the first fastening hole 3a provided in the base 3 and the second fastening hole 4a provided in the base plate 4 of the fixture 2 match, the mounting accuracy of the fixture 2 to the base 3 is high, and the manufacturing process is improved. It also has excellent workability.

Further, each of the flat plate members constituting the fixture 2 includes first base end press-fitting parts 5a, 6a, first base end hole part 4b, tip press-fitting parts 5c, 6c, tip hole part 8b, and first side press-fitting part. 71a and a first side hole 5b, and a second side press-fit part 72a and a second side hole 6b are formed, and when each press-fit part is press-fitted into the corresponding hole, the fixture is 2 are assembled. Since it is difficult to press-fit each flat plate member unless its dimensions are accurate, the assembled fixture has very high precision. Therefore, by fixing the vehicle body part V to the test jig 1 of the present invention, the state in which it is actually mounted on the vehicle body is reproduced with high precision.

Further, by providing the second fastening hole 4a between the first base end hole 4b and the second base end hole 4c so that the second fastening hole 4a is located between the first side plate member 5 and the second side plate member 6, the substrate 4 can be minimized. Therefore, the substrate 4 is less likely to be distorted and there is less risk of deterioration in accuracy.

Furthermore, the surface of the mounting reinforcing member 8 to which the mounting portion W of the vehicle body part V is attached may be subject to deterioration such as wear due to replacement of the vehicle body component V; Since the mounting member 9 is removably attached to the opposing surface, even if the mounting member 9 deteriorates, it is possible to remove only the mounting member 9 and replace it with a new one, and the entire test jig 1 can be removed. It is economical because there is no need to manufacture new ones.

Furthermore, since the tips of the first side plate member 5 and the second side plate member 6 are formed at substantially the same angle as the attachment angle on the opposing surface of the attachment portion W, the flat attachment member 9 can be attached to the first side plate member 5 and By attaching it to the tip of the second side plate member 6, the attachment member 9 can be easily set at substantially the same angle as the attachment portion W. Therefore, a highly accurate test jig 1 can be provided at low cost.

(Example of modification of each hole)
The substrate 4, the first side plate member 5, the second side plate member 6, the reinforcing member 7, and the mounting reinforcing member 8 that constitute the fixture 2 are cut out from a flat plate-shaped material using, for example, a laser processing machine, so that The end faces are approximately at right angles. Therefore, each press-fitting part 5a, 5c, 6a, 6c, 71a, 72a, 73 formed to protrude has a substantially right-angled corner. Each hole portion 4b, 4c, 5b, 6b, 8b, which is a substantially rectangular opening corresponding to each press-fit portion 5a, 5c, 6a, 6c, 71a, 72a, 73, has a corner portion formed at a substantially right angle. Otherwise, it will be difficult to press-fit the press-fit portions 5a, 5c, 6a, 6c, 71a, 72a, 73.

When processing the holes 4b, 4c, 5b, 6b, and 8b, if you try to cut each corner at a substantially right angle while the processing machine is running continuously, the corners will curve slightly and become rounded. Therefore, it was difficult to press-fit the press-fit portions 5a, 5c, 6a, 6c, 71a, 72a, and 73. Therefore, it was possible to cut out at a substantially right angle by temporarily stopping the processing machine at each corner, but stopping the processing machine at each corner was inefficient.

FIG. 10 is a plan view showing a modification of each hole. As shown in FIG. 10, the first proximal hole 40b and the second proximal hole 40c of the substrate 41 have expansions that bulge outward so that each corner of the substantially rectangular opening is expanded. A portion 40d is formed. The expanded portion 40d allows the corner portion to be processed without temporarily stopping the processing machine, and it is possible to efficiently manufacture an opening into which a press-fitting portion can be press-fitted. Note that the expanded portion 40d is not limited to a circular shape as shown in FIG. 10, but may have another shape.

Since the same effects as those of the first proximal hole 40b and the second proximal hole 40c described above can be obtained in the first side hole 5b, the second side hole 6b, and the tip hole 8b, It is desirable that an enlarged portion bulges outward so that each corner of the substantially rectangular opening is enlarged.

(Modified example of fixture)
FIG. 11 is a perspective view showing a modification of the fixture 2. Each flat plate member constituting the fixture 2 is not limited to a rectangular shape. For example, as shown in FIG. 11, the first side plate member 51 and the second side plate member 61 may have a shape in which the base end portions expand toward the base end side. Further, the attachment reinforcing member 81 and the attachment member 91 are not limited to rectangular shapes, but may be polygonal shapes as shown in FIG. 11. The test jig 1 may be configured by combining a plurality of types of fixtures 2 having different shapes, such as rectangular and polygonal shapes, in accordance with the mounting portion W of the vehicle body part V.

<Second embodiment>
Further, as the test jig, a fixture having a different form from the fixtures described above may be used. For example, the mounting members are not limited to the flat mounting members 9 and 91 as in the first embodiment, and as shown in FIG. The mounting member 92 may have a shape. FIG. 12 is a perspective view of the fixture according to the second embodiment, showing a state in which the mounting member 92 is separated. In this fixture 20, each press-fitting part provided on the substrate 42, the first side plate member 52, the second side plate member 62, the reinforcing member 72, and the attachment reinforcing member 82, which are flat plate members, is press-fitted into the corresponding hole part. This is the same as the fixing device 2 in the above embodiment in that it is assembled and the attachment member 92 is attached, but the form of each member is different.

(Substrate configuration)
FIG. 13 is a plan view of the substrate 42 according to the second embodiment. The substrate 42 is a substantially rectangular flat plate member, and is provided with two first base end holes 42b, 42b at positions spaced apart in the longitudinal direction. The two first base end holes 42b, 42b are provided at positions shifted from each other in the lateral direction. In the second embodiment, the first base end hole 42b is formed to have dimensions corresponding to the first base end press-fit parts 52a and 62a formed at the base ends of the first side plate member 52 and the second side plate member 62. ing. The first base end hole 42b is a long rectangular opening, and rectangular expanded portions 42d are formed at each corner.

A second base hole 42c is provided between the two first base holes 42b, 42b. The second base end hole 42c is formed to have a size corresponding to a second base end press-fit portion 73' formed at the base end of the reinforcing member 72. The second base end hole 42c is a long rectangular opening, and rectangular expanded portions 42d are formed at each corner.

Further, the substrate 42 is provided with a second fastening hole 42a at a position facing the first fastening hole 3a. A pair of second fastening holes 42a located apart in the lateral direction of the substrate 4 are arranged at two locations apart in the longitudinal direction of the substrate 42 on the edge side of the first proximal end holes 42b, 42b, and a total of four second A fastening hole 42a is provided. The second fastening hole 42a matches the first fastening hole 3a.

(Configuration of first side plate member and second side plate member)
FIG. 14 is a plan view of the first side plate member 52 according to the second embodiment, and FIG. 15 is a plan view of the second side plate member 62 according to the second embodiment. The first side plate member 52 and the second side plate member 62 have a long side extending from the proximal side toward the distal side, a short side on the proximal side along the fixing surface 31, and a short side on the distal side along the attachment part W. It is formed into a substantially rectangular shape.

The first side plate member 52 and the second side plate member 62 have proximal end surfaces 52d, 62d that abut the substrate 42 on the proximal side, and protrude approximately perpendicularly from the proximal end surfaces 52d, 62d toward the substrate 42. It has first base end press-fit parts 52a, 62a formed as follows. The first proximal press-fitting part 52a of the first side plate member 52 is formed approximately at the middle of the proximal end surface 52d, and the first proximal press-fitting part 62a of the second side plate member 62 is formed approximately at the proximal end surface 62d. It is formed at a position offset from the middle part.

The first side plate member 52 and the second side plate member 62 have, on the distal end side, distal end surfaces 52e and 62e facing the mounting portion W, and protrude substantially perpendicularly from the distal end surfaces 52e and 62e toward the attachment reinforcing member 82. It has tip press-fit parts 52c and 62c formed as follows. The tip press-fitting portion 52c of the first side plate member 52 is formed at approximately the middle of the tip side end surface 52e, and the tip press-fitting portion 62c of the second side plate member 62 is formed at a position shifted from the approximately middle portion of the tip side end surface 62e. has been done. The longitudinal direction of the tip side end surfaces 52e, 62e, the first side plate member 52, and the second side plate member 62 is substantially perpendicular.

A rectangularly cut recess 55 is provided between the proximal end surfaces 52d, 62d and the first proximal press-fitting portions 52a, 62a, and between the distal end surfaces 52e, 62e and the distal press-fitting portions 52c, 62c. , 65 are formed. By providing the recesses 55, 65, the corners between the proximal end surfaces 52d, 62d and the first proximal press-fitting parts 52a, 62a, and the corners between the distal end surfaces 52e, 62e and the distal press-fitting parts 52c, 62c. Workability is good because there is no need to form the part accurately and approximately at right angles.

The first base end press-fit parts 52a, 62a have shapes corresponding to the first base end holes 42b, 42b formed in the substrate 42, and have substantially right angle corners. The tip press-fit portions 52c, 62c have a shape corresponding to the tip hole 82b formed in the attachment reinforcing member 82, and have substantially right angle corners.

A first side hole 52b and a second side hole 62b are formed in the first side plate member 52 and the second side plate member 62, respectively. The first side hole 52b and the second side hole 62b are formed in positions and shapes corresponding to the first side press-fit part 71a' or the second side press-fit part 72a' formed in the reinforcing member 72. It is a long rectangular opening having substantially right-angled corners.

(Configuration of reinforcing member)
FIG. 16 is a plan view of the reinforcing member 72 according to the second embodiment. As shown in FIG. 16, the reinforcing member 72 is formed into a substantially elongated rectangular shape with a long side extending from the proximal end toward the distal end and a short side on the proximal end along the fixing surface 31.

The proximal end portion of the reinforcing member 72 protrudes substantially perpendicularly from the proximal end surface 74' toward the substrate 4 at a substantially intermediate portion between the proximal end surface 74' that contacts the substrate 42 and the proximal end surface 74'. It has a second base end press-fitting part 73' formed to do so. The second base end press-fitting portion 73' has a shape corresponding to the second base end hole 42c formed in the substrate 42, and has a substantially right angle corner.

The distal end portion of the reinforcing member 72 is configured to protrude approximately perpendicularly from the distal end surface 77 toward the mounting reinforcing member 82 at a substantially intermediate portion between the distal end surface 77 that contacts the mounting reinforcing member 82 and the distal end surface 77 . It has a second tip press-fit portion 76 formed therein. The second tip press-fit portion 76 has a shape corresponding to the second tip hole 82d formed in the attachment reinforcing member 82, and has a substantially right angle.

Further, the reinforcing member 72 has a side end surface 75' that contacts the first side plate member 52 or the second side plate member 62, and protrudes approximately perpendicularly from the side end surface 75' toward the first side plate member 52 or the second side plate member 62. It has a first lateral press-fitting part 71a' and a second lateral press-fitting part 72a'. The first lateral press-fitting part 71a' and the second lateral press-fitting part 72a' fit into the first lateral hole 52b and the second lateral hole 62b formed in the first side plate member 52 and the second side plate member 62. They are of corresponding shape and have substantially right angle corners.

Between the proximal end surface 74' and the second proximal press-fitting part 73', between the distal end surface 77 and the second distal press-fitting part 76, and between the side end surface 75' and the first lateral press-fitting part 71a'. A rectangular cut-out recess 78 is formed between the second lateral press-fitting part 72a' and the second side press-fitting part 72a' to facilitate machining.

(Configuration of mounting reinforcement member)
FIG. 17 is a plan view of the attachment reinforcing member 82 according to the second embodiment. The attachment reinforcing member 82 is a substantially trapezoidal flat plate member with chamfered corners, and is attached in a state in which it is in contact with the tips of the first side plate member 52, the second side plate member 62, and the reinforcing member 72. In the second embodiment, the attachment reinforcing member 82 is substantially parallel to the substrate 42.

The attachment reinforcing member 82 is provided with two tip holes 82b, 82b at positions separated from each other in the longitudinal direction of the attachment reinforcing member 82. The tip hole portion 82b is an opening having a shape corresponding to the tip press-fit portions 52c and 62c formed at the tip portions of the first side plate member 52 and the second side plate member 62.

A second tip hole 82d is provided between the two tip holes 82b, 82b. The second tip hole portion 82d is an opening having a shape corresponding to the second tip press-fit portion 76 formed at the tip portion of the reinforcing member 77.

The tip hole portion 82b and the second tip hole portion 82d are I-shaped openings in which a rectangular expanded portion 82e is formed at each corner of a long rectangle.

Furthermore, a hole 82c for attaching a mounting member 92 is formed in the mounting reinforcing member 82. Three holes 82c are provided at intervals on the edge side from the tip hole 82b and the second tip hole 82d.

(Configuration of mounting parts)
FIG. 18 is a side view of the mounting member 92 according to the second embodiment. The attachment member 92 has a three-dimensional shape imitating a part of the vehicle body to which the vehicle body part V is attached. In the second embodiment, the tip side surface is inclined and extends along the opposing mounting portions W. The mounting member 92 as a whole has a triangular pyramid-like shape. The attachment member 92 has a hole 92b on the proximal side surface for fastening with the hole 82c provided in the attachment reinforcing member 8. The hole 92b is provided at a position corresponding to the hole 82c of the attachment reinforcing member 8.

The hole 92b matches the hole 82c provided in the attachment reinforcing member 82. The hole 82c of the mounting reinforcing member 82 and the hole 92b of the mounting member 92 are, for example, fastening holes having the same hole diameter and having a circular cross section with a threaded groove formed on the inner wall, and are not welded but screwed. By screwing into the holes 82c and 92b, the mounting member 92 is removably attached to the mounting reinforcing member 82.

The mounting member 92 is precisely shaped using an NC processing machine or the like using the design data of the vehicle body to have a three-dimensional shape that imitates a part of the vehicle body to which the vehicle body part V is attached. Thereby, the mounting member 92 can faithfully reproduce the part of the vehicle body to which the vehicle body part V is attached, making it possible to provide a more accurate test jig. Note that the three-dimensional shape of the mounting member 92 is appropriately designed depending on the type of the vehicle body part V and the position where the fixture 2 is mounted, and is therefore not limited to the shape shown in FIGS. 12 and 18.

(Operations and effects of the second embodiment)
As explained above, according to the test jig according to this embodiment, the fixture 20 is assembled by press-fitting each press-fitting part into the corresponding hole, similarly to the first embodiment. Therefore, by fixing the vehicle body part V to the test jig 1 of the present invention, the state in which it is actually mounted on the vehicle body can be reproduced with high precision.

Moreover, since the mounting member 92 has a three-dimensional shape that imitates a part of the vehicle body to which the vehicle body part V is attached, it can be used as a test jig with higher precision.

<Example of use in combination with fixtures>
FIG. 19 is a perspective view showing an example of how the test jig 1' of this embodiment is used. As shown in FIG. 19, the test jig 1' may be used in combination with the fixture 2 of the first embodiment and the fixture 20 of the second embodiment. Further, necessary measurement terminals, sensors, etc. may be attached depending on the test to be performed.

(Other embodiments of the base)
FIG. 20 is a perspective view of a base 30 according to another embodiment. As shown in FIG. 20, the base 30 may have a plurality of first fastening holes 3a at approximately equal intervals. The fixing tool can be fixed in a predetermined first fastening hole 3a selected depending on the type of the vehicle body part V. According to this configuration, even if the position of the fixture differs depending on the type of vehicle body part V to be tested, the fixture can be fixed by aligning the second fastening hole 4a of the fixture with the predetermined first fastening hole 3a of the base 30. I can do it. Since one base 30 can be used with a plurality of vehicle body parts V by replacing the fixture, the versatility of the test jig can be expanded.

The embodiments described above are merely illustrative in all respects and should not be interpreted in a limiting manner. Furthermore, all modifications and changes that come within the scope of equivalents of the claims are intended to be within the scope of the present invention.

As explained above, the test jig according to the present invention can be used when performing various tests on vehicle body parts.

1, 1' test jig 2, 20 fixture 3, 30 base 3a first fastening hole 31 fixing surface 32 support part 4, 42 board 4a, 42a second fastening hole 4b, 42b first base end hole 4c, 42c Second base end hole 40d, 42d Expanded part 5, 51, 52 First side plate member 5a, 52a First base press fit part 5b, 52b First side hole 5c, 52c Tip press fit part 6, 61, 62 Second side plate member 6a, 62a First base end press-fit part 6b, 62b Second side hole part 6c, 62c Tip press-fit part 7, 72 Reinforcement member 71a, 71a' First lateral press-fit part 72a, 72a' Second side Directional press-fitting part 73, 73' Second base end press-fitting part 8, 81 Mounting reinforcing member 8a Third fastening hole 8b Tip hole part 9, 91, 92 Mounting member 9a Fourth fastening hole V Vehicle body parts W Mounting part X Mounting hole

Claims (7)

A fixing device provided on a vehicle body part to be tested to which an attachment part to the vehicle body is fixed, and a base having a flat fixing surface to which the fixing device is attached. In a test jig that reproduces the state in which car body parts are mounted on a car body,
The base has a first fastening hole that opens to the fixing surface,
The fixture is composed of a plurality of flat plate members,
The flat plate member includes at least
a substrate having a second fastening hole that coincides with the first fastening hole and fixed by a fastening member in an overlapping state with respect to the fixed surface;
a first side plate member and a second side plate member each extending in a direction intersecting the substrate from mutually separated portions of the surface of the substrate opposite to the base;
a reinforcing member installed between the first side plate member and the second side plate member and connecting the first side plate member and the second side plate member;
an attachment reinforcing member attached to the tip portions of the first side plate member and the second side plate member,
A base end press-fit portion is formed at a base end portion of the first side plate member and a base end portion of the second side plate member so as to protrude toward the substrate , and the base end press-fit portion is formed on the substrate. A proximal hole portion to be press-fitted is formed,
A tip press-fitting portion is formed at the tip of the first side plate member and the tip of the second side plate member so as to protrude toward the mounting reinforcing member , and the mounting reinforcing member has the tip press-fitting portion. A tip hole to be press-fitted is formed,
The reinforcing member is formed with a first lateral press-fitting part that protrudes toward the first side plate member and a second lateral press-fitting part that protrudes toward the second side plate member, and the first lateral press-fitting part protrudes toward the second side plate member . The member is formed with a first side hole into which the first side press-fit portion is press-fitted, and the second side plate member is formed with a second side hole into which the second side press-fit portion is press-fitted. is formed,
The test jig is characterized in that the attachment portion of the vehicle body part is attached to the tip of the fixture via the attachment reinforcing member. The test jig according to claim 1,
The test jig is characterized in that the second fastening hole is provided between the first side plate member and the second side plate member. The test jig according to claim 1 or 2,
A test characterized in that the attachment reinforcing member has a removable attachment member on the side of the vehicle body component to which the attachment portion is attached, and the attachment portion is attached in contact with the attachment member. Jig for use. In the test jig according to claim 3,
The mounting member has a flat plate shape,
The test jig is characterized in that the first side plate member and the second side plate member have tip portions formed at substantially the same angle as a mounting angle of the mounting portion of the vehicle body part. In the test jig according to claim 3,
The test jig is characterized in that the mounting member has a three-dimensional shape imitating a part of a vehicle body to which the vehicle body part is attached. The test jig according to any one of claims 1 to 5,
The base has a plurality of first fastening holes at approximately equal intervals,
The test jig is characterized in that the fixture is fixed in a predetermined first fastening hole selected depending on the type of the vehicle body part. The test jig according to any one of claims 1 to 6,
The base end hole, the distal end hole, the first side hole, and the second side hole are substantially rectangular openings, and each corner of the substantially rectangular shape has an opening. A test jig characterized in that an expansion part is formed that bulges outward so that the expansion part expands.

Images