JP2009099394A - Fastening structure of terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening structure of a terminal, which can surely fasten a ground terminal alone on a panel without using extra tools for fastening or the like, can easily be fastened, and can easily be removed at disassembly. <P>SOLUTION: In the fastening structure of a terminal for adhering and fixing a flat plate part 11 of a ground terminal 10 on the surface of a panel 20, a substantially circular mounting hole 22 is provided at the panel 20, adhesive faces 21 are secured around the mounting hole 22, a small-diameter part A1 with a small distance D1 between opposed edge parts is secured at a first site in a peripheral direction of the mounting hole 22, a large-diameter part A2 with a distance D2 between opposed edge parts larger than that of the small-diameter part A1 is provided at a second site away from the first site in a peripheral direction, a pair of hooks 13, 13 are set in protrusion for adhering the flat plate part 11 to the adhesive faces 21 with engagement with a rear face of the panel 20, and a spring piece 14, a convex part 15 and a concave part 25 are provided between the terminal 10 and the panel 20 for preventing the flat plate part 11 from turning when the hooks 13 are positioned at the small-diameter part A1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a terminal fixing structure mainly applied when fixing a ground terminal to a vehicle body panel or the like.

  Generally, when fixing a ground terminal to a vehicle body panel, as shown in FIGS. 5 and 6, a circular mounting hole 122 is formed in the panel 120, and a hole of the flat plate portion 111 of the ground terminal 110 is formed in the mounting hole 122. 112, the front end 131 of the bolt 130 is passed through, and the front end 131 of the bolt 130 is screwed into and tightened with a nut 140 disposed on the back side of the panel 120 so that the flat plate portion 111 is in close contact with the surface of the panel 120 In this state, the ground terminal 110 is fixed to the panel 120. At this time, the nut 140 may be welded and attached to the back side of the panel 120 in advance.

  However, in the case of the structure in which the ground terminal 110 is fixed to the panel 120 using the bolt 130 and the nut 140 as described above, the bolt 130 and the nut 140 are necessary, and a tool for fastening is necessary and the fixing is performed. And removal is troublesome.

  Therefore, for example, as described in Patent Document 1, a spring piece for temporary holding having an outwardly curved portion is symmetric with respect to the center of the bolt insertion hole on the ground terminal provided with a bolt insertion hole. A pair of spring pieces are fitted into the mounting holes of the panel while utilizing the elasticity of the spring pieces, and then the vehicle body locking clamp fixed to the wire harness or the like is attached to the mounting holes of the panel with the ground terminal interposed therebetween. It has been proposed that a ground terminal is pressed against a panel by a skirt portion (protruding portion) provided in a clamp and inserted into and locked to a panel.

This eliminates the need for bolts and nuts, requires no tools, and allows the ground terminal to be easily fixed to the panel.
JP 2006-261012 A

  However, in the above-described conventional patent document 1, a pair of temporary holding spring pieces are provided on the ground terminal, and these spring pieces are fitted into the mounting holes of the panel, whereby the ground terminal is temporarily locked to the panel. However, it is necessary to insert and lock the clamp provided on the wire harness etc. into the mounting hole of the panel to fix the final grounding terminal. It cannot be securely fixed to the panel.

  In consideration of the above circumstances, the present invention can securely fix only the ground terminal to the panel without using bolts and nuts and without using any extra tools for fastening. An object of the present invention is to provide a terminal fixing structure that can be easily removed at the time of disassembly.

  According to the first aspect of the present invention, in the terminal fixing structure in which the flat plate portion of the terminal is fixed to the surface of the panel and fixed, a substantially circular mounting hole penetrating in the front and back direction is provided in the panel, and the mounting hole is provided around the mounting hole. A tight contact surface to which the flat plate portion is in close contact is secured, a small-diameter portion having a small distance between the opposing edge portions is secured at the first location in the circumferential direction of the mounting hole, and the first portion separated in the circumferential direction from the first location. 2 is provided with a large-diameter portion having a larger distance between the opposing edge portions than the small-diameter portion, and is positioned on the large-diameter portion on the lower surface of the flat plate portion of the terminal, thereby allowing the panel to pass through the mounting hole. In this state, the flat plate portion is rotated in the circumferential direction and positioned on the small diameter portion so that it can be engaged with the back surface of the panel. A pair of the flat plate portion and the close contact surface A hook provided, further, between the said terminal panel, characterized in that a detent means for the detent of said plate when positioning the hook on the small diameter portion.

  A second aspect of the present invention is the terminal fixing structure according to the first aspect, wherein the mounting hole is formed as a perfect circular hole having a constant diameter, and the range of the constant diameter is configured as the small-diameter portion. A notch is provided in at least one of the peripheral portions of the hole, and the portion provided with the notch is configured as the large diameter portion.

  A third aspect of the present invention is the terminal fixing structure according to the first or second aspect, wherein the hook has a first bent portion on the proximal end side that is bent outwardly and the first bent portion. And a second bent portion that is bent inwardly on the inside.

  A fourth aspect of the present invention is the terminal fixing structure according to any one of the first to third aspects, wherein the flat plate portion is formed in a ring shape, and is integrated with an inner peripheral edge of the ring-shaped flat plate portion. The hook is formed by bending.

  The invention of claim 5 is the terminal fixing structure according to claim 4, wherein the hook is formed by bending alternating strips formed inside the ring-shaped flat plate portion. Features.

  A sixth aspect of the present invention is the terminal fixing structure according to any one of the first to fifth aspects, wherein the detent means is a belt-like spring projecting from the outer peripheral edge of the flat plate portion. And a convex portion and a concave portion which are provided on one and the other of the opposing surfaces of the piece and the lower surface of the spring piece and the panel, and engage with each other when their positions match each other.

  According to the first aspect of the present invention, the hook is provided on the lower surface of the flat plate portion of the terminal so as to be aligned with the large-diameter portion of the mounting hole of the panel, so that the hook passes through the mounting hole from the front surface side to the back surface side. It can be removed. In this state, the flat plate portion is rotated and the hook position is adjusted to the small diameter portion of the mounting hole of the panel, so that the hook engages with the back surface of the panel. In this state, the terminal can be fixed to the panel. At that stage, since the rotation preventing means prevents the terminal from rotating, the engagement of the hook with the back surface of the panel is maintained, and the terminal does not come off the panel. On the other hand, when removing the terminal from the panel at the time of dismantling, etc., the flat part of the terminal is rotated against the resistance force of the detent means and the position of the hook is adjusted to the large diameter part. If it does so, since a hook can be extracted from an attachment hole, a terminal can be removed from a panel as it is.

  In this way, the terminal can be reliably fixed to the panel without using bolts or nuts. In addition, the terminal can be easily fixed to the panel or the terminal can be removed from the panel simply by turning the terminal with the hook positioned. Therefore, it is possible to fix itself to the panel with only the terminal without requiring extra equipment such as a clip.

  According to the invention of claim 2, since the large-diameter portion is formed by providing a cutout in at least one place of the mounting hole, for example, the small-diameter portion and the large-diameter portion are formed by forming the mounting hole in an elliptical shape. Compared to the configuration, the configuration is simple and easy to implement.

  According to the invention of claim 3, the hook is constituted by the first bent portion on the base end side bent to the outer shape and the second bent portion on the distal end side bent to the inner shape. Therefore, the hook can be easily passed through the mounting hole using the second bent portion bent inward as a guide. In other words, when there is only the first bent portion, the tip bent to the outside of the first bent portion interferes with the peripheral edge of the mounting hole of the panel, which may make it difficult for the hook to enter the mounting hole. By having the second bent portion bent inward at the tip of the first bent portion, the second bent portion serves as a guide when the hook enters the attachment hole. Therefore, the hook can be easily inserted, and the workability at the time of fixing the terminal can be improved.

  According to the invention of claim 4, since the flat plate portion of the terminal is formed in a ring shape, and the hook is integrally bent at the inner peripheral edge of the ring-shaped flat plate portion, the terminal is pressed by one plate material. Can only be formed.

  According to the invention of claim 5, since the pair of hooks are formed by bending alternating strips formed on the inside of the ring-shaped flat plate portion, even a long hook is reasonably press-formed from a single plate material. can do.

  According to the sixth aspect of the present invention, the anti-rotation means is provided on the strip plate-like spring piece projecting from the outer peripheral edge of the flat plate portion of the terminal, and one or the other of the opposing surfaces of the lower surface of the spring piece and the panel. Therefore, the terminal can be reliably prevented from rotating only by performing simple processing.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a perspective view showing a state before the ground terminal of the embodiment is fixed to the panel, FIG. 2 is a side view of the ground terminal, and FIG. 3 is a perspective view showing a state when the hook of the ground terminal is inserted into the mounting hole. 4 (a) is a perspective view showing a state when the terminal is rotated from the state of FIG. 3 and the hook is engaged with the panel, and FIG. 4 (b) is an AA arrow in FIG. 4 (a). FIG. 4C is a cross-sectional view taken along the line BB in FIG. 4A.

  As shown in FIG. 1, the terminal fixing structure of this embodiment is a ground terminal in a state where a ring-shaped flat plate portion 11 is in close contact with the surface of a vehicle body panel (hereinafter simply referred to as “panel”) 20. 10 is for fixing to the panel 20.

  The panel 20 has a substantially circular mounting hole 22 penetrating in the front and back direction, and a contact surface 21 to which the ring-shaped flat plate portion 11 of the ground terminal 10 is in close contact is secured around the mounting hole 22. The

  A small-diameter portion A1 having a small distance D1 between the opposing edges is secured at the first location in the circumferential direction of the mounting hole 22, and the opposing edge is provided at the second location that is circumferentially separated from the first location. A large-diameter portion A2 having a larger distance D2 than the small-diameter portion A1 is provided.

  In this case, the mounting hole 22 is formed as a perfect circular hole having a constant diameter D1, and the range of the constant diameter D1 is configured as the small diameter portion A1. Moreover, the notch 23 is provided in at least one location of the peripheral part of the attachment hole 22, and the part in which the notch 23 was provided is comprised as the large diameter part A2.

  On the other hand, a ring-shaped flat plate portion 11 is provided on the distal end side of the wire crimping portion 18 of the ground terminal 10, and a pair of hooks 13, 13 project from the lower surface of the ring-shaped flat plate portion 11. .

  The pair of hooks 13 and 13 are positioned at the position of the large-diameter portion A2 of the mounting hole 22, and can pass through the mounting hole 22 from the front surface side of the panel 20 to the back surface side. In a state where the flat plate portion 11 has passed through to the side, the flat plate portion 11 is rotated in the circumferential direction and positioned at the position of the small-diameter portion A1, thereby engaging the back surface of the panel 20 and attaching the flat plate portion 11 to the periphery of the mounting hole 22. It is made to adhere to the contact surface 21. Therefore, as shown in FIG. 4B, the dimension S between the outermost portions of the pair of hooks 13, 13 is larger than the diameter D1 of the small diameter portion A1.

  Each of the pair of hooks 13 and 13 is provided continuously at the proximal end side of the first bent portion 13a bent to the outer shape and the distal end of the first bent portion 13a. The second bent portion 13b is bent, and is integrally bent at the inner peripheral edge of the ring-shaped flat plate portion 11. In this case, as shown in FIG. 2, the hooks 13 are formed at alternate positions by bending alternate strips formed inside the ring-shaped flat plate portion 11.

  Moreover, between the terminal 10 and the panel 20, the rotation prevention means which can stop the flat plate part 11 when the hook 13 is positioned by the small diameter part A1 is provided. The detent means of this embodiment is provided on one and the other of the opposing surfaces of the strip plate-like spring piece 14 projecting from the outer peripheral edge of the flat plate portion 11, the lower surface of the spring piece 14 and the panel 20, It is comprised from the convex part 15 and the recessed part 25 which engage when a position corresponds mutually. In the case of this example, a positioning hole as the concave portion 25 is provided on the panel 20 side, and a projection as the convex portion 15 that fits into the concave portion 25 is provided on the spring piece 14 side.

  Next, the operation will be described.

  When fixing the ground terminal 10 to the panel 20, first, the position of the hook 13 provided on the lower surface of the ring-shaped flat plate portion 11 is set to the large diameter portion A2 of the mounting hole 22 of the panel 20 (the position where the notch 23 is provided). , The hook 13 is allowed to penetrate from the front surface side to the back surface side of the panel 20 through the attachment hole 22. FIG. 3 shows this state.

  Next, as shown in FIG. 4A, the ground terminal 10 is rotated in that state, and the position of the hook 13 is adjusted to the small diameter portion A <b> 1 of the mounting hole 22 of the panel 20. That is, the ground terminal 10 is rotated approximately 90 ° with respect to the position where the notch 23 is present (large diameter portion A2). Then, since the hook 13 engages with the back surface of the panel 20, the ground terminal 10 is fixed to the panel 20 with the ring-shaped flat plate portion 11 of the ground terminal 10 in close contact with the surface of the panel 20. Can do.

  At that stage, as shown in FIG. 4 (c), the protrusion 15 provided on the spring piece 14 fits into the recess 25 provided on the panel 20, thereby preventing the ground terminal 10 from rotating. The engagement state of the hook 13 with respect to the back surface of the ground terminal 10 is maintained, and the ground terminal 10 cannot be detached from the panel 20.

  On the other hand, when removing the ground terminal 10 from the panel 20 at the time of dismantling or the like, the ground terminal 10 is rotated against the engaging force between the convex portion 15 of the spring piece 14 and the concave portion 25 of the panel 20, and the position of the hook 13 is changed. Match to the position of the large diameter part A2. As a result, the hook 13 can be removed from the mounting hole 22, so that the ground terminal 10 can be detached from the panel 20 as it is.

  In this way, the ground terminal 10 can be reliably fixed to the panel 20 without using bolts or nuts. In addition, the ground terminal 10 can be easily fixed to the panel 20 or the terminal can be removed from the panel 20 simply by aligning the position of the hook 13 and turning the ground terminal 10. Therefore, it is possible to fix itself to the panel 20 with only the ground terminal 10 without requiring extra equipment such as a clip as in the conventional case.

  Further, in the structure of the present embodiment, the large diameter portion A2 is configured by providing the cutout 23 at least at one location of the mounting hole 22, so that, for example, by forming the mounting hole 22 in an elliptical shape, Compared to configuring the large-diameter portion, the configuration is simple and easy to implement.

  Further, the hook 13 is composed of a first bent portion 13a on the base end side that is bent outwardly and a second bent portion 13b on the distal end side that is bent inwardly. The hook 13 can be easily passed through the mounting hole 22 using the bent second bent portion 13b as a guide. That is, when there is only the first bent portion 13 a, the tip portion bent outward of the first bent portion 13 a interferes with the peripheral edge of the mounting hole 22 of the panel 20, so that the hook 13 is difficult to enter the mounting hole 22. However, since the second bent portion 13b is bent inwardly at the tip of the first bent portion 13a, the second bent portion 13b serves as a guide when the hook 13 enters the mounting hole 22. . Therefore, the hook 13 can be easily inserted, and the workability when the ground terminal 10 is fixed can be improved.

  Further, since the flat plate portion 11 of the ground terminal 10 is formed in a ring shape, and the hook 13 is bent and formed integrally with the inner peripheral edge of the ring-shaped flat plate portion 11, the ground terminal 10 is pressed by a single plate material. Can only be formed.

  Further, since the pair of hooks 13 are formed by bending alternating strips formed inside the ring-shaped flat plate portion 11, even the longer hook 13 can be press-formed from a single plate without difficulty. Can do.

  Further, the anti-rotation means is provided on the strip plate-like spring piece 14 projecting from the outer peripheral edge of the flat plate portion 11 of the ground terminal 10, and one or the other of the opposing surfaces of the lower surface of the spring piece 14 and the panel 20. Since the convex portion 15 and the concave portion 25 are used, the ground terminal 10 can be reliably prevented from rotating only by performing simple processing.

It is a perspective view which shows the state before fixing the ground terminal of embodiment of this invention to a panel. It is a side view of the ground terminal. It is a perspective view which shows a state when the hook of the ground terminal is inserted in the attachment hole. (A) is a perspective view showing a state when the terminal is rotated from the state of FIG. 3 and the hook is engaged with the panel, (b) is a cross-sectional view taken along the line AA in (a), (c). [FIG. 2] is a sectional view taken along line BB in FIG. It is a perspective view which shows a prior art example. It is sectional drawing of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ground terminal 11 Ring-shaped flat plate part 13 Hook 13a 1st bending part 13b 2nd bending part 14 Spring piece (rotation prevention means)
15 Convex part 20 Panel 21 Contact surface 22 Mounting hole 23 Notch 25 Concave part D1, D2 Distance between opposing edges A1 Small diameter part A2 Large diameter part

Claims (6)

In the terminal fixing structure for fixing the flat part of the terminal in close contact with the surface of the panel,
A substantially circular mounting hole penetrating in the front and back direction is provided in the panel, a close contact surface is provided around the mounting hole so that the flat plate portion is in close contact with each other, and a first portion in the circumferential direction of the mounting hole is provided between the opposing edges. A small-diameter portion having a small distance is provided, and a large-diameter portion having a distance between opposing edges larger than the small-diameter portion is provided at a second location that is circumferentially separated from the first location, while the terminal By positioning the large-diameter portion on the lower surface of the flat plate portion, the flat plate portion can be penetrated from the front surface side to the back surface side of the panel through the attachment hole, and in a state of being submerged to the back surface side. And a pair of hooks for engaging the back surface of the panel and bringing the flat plate portion into close contact with the close contact surface by rotating in a circumferential direction. Before the hook is positioned on the small diameter part Fixing structure of the terminal, characterized in that a detent means for the detent of the flat plate portion. The terminal fixing structure according to claim 1,
The mounting hole is formed as a round hole having a constant diameter, the range of the constant diameter is configured as the small-diameter portion, a notch is provided in at least one of the peripheral portions of the mounting hole, and the portion provided with the notch is Terminal fixing structure characterized by being configured as a large diameter part. The terminal fixing structure according to claim 1 or 2,
The hook includes a first bent portion on the base end side that is bent outwardly and a second bent portion that is continuously provided at the distal end of the first bent portion and bent inwardly. A terminal fixing structure characterized by comprising: The terminal fixing structure according to any one of claims 1 to 3,
The terminal fixing structure, wherein the flat plate portion is formed in a ring shape, and the hook is integrally bent at the inner periphery of the ring-shaped flat plate portion. The terminal fixing structure according to claim 4,
The terminal fixing structure, wherein the hook is formed by bending alternating strips formed inside the ring-shaped flat plate portion. The terminal fixing structure according to any one of claims 1 to 5,
The anti-rotation means is provided on a band plate-like spring piece projecting from the outer peripheral edge of the flat plate portion, and one or the other of the opposing surfaces of the lower surface of the spring piece and the panel, and the positions match each other. A terminal fixing structure comprising a convex portion and a concave portion that engage with each other.

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