JPH06341865A - Connecting structure of terminal pin of display measuring instrument - Google Patents

Abstract

PURPOSE:To smoothly perform the mounting operation of a display measuring instrument onto an opposite member and to prevent the deformation of a terminal pin and a connecting terminal at the opposite member. CONSTITUTION:A rod-shaped terminal pin 3 is pushed into an insulating and hollow cylindrical pin-holding part 4 for a display measuring instrument body 2. A guard part 10 is formed at the terminal pin 3. In addition, a recessed part 6 which houses the guard part 10 so as to be displaceable is formed on the inner circumferential face of the pin-holding part 4, and the terminal pin 3 can be tilted and moved by using the guard part 10 as a fulcrum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal pin connection structure for a display meter such as a speedometer and a tachometer, and more particularly to a connection structure between a display meter main body and a terminal pin.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a connecting structure of a display instrument main body and a terminal pin is such that a rod-shaped terminal pin 3 is press-fitted into an insulating hollow cylindrical pin holding portion 4 of the display instrument main body 2. The display pin body 2 and the terminal pin 3 are electrically connected to each other by pressing the outer peripheral surface of the tip end portion of the terminal pin 3 to the leaf-spring-shaped conductive connection terminal 9. Also, terminal pin 3
The stopper portion 13 formed on the end surface of the pin holding portion 4
By abutting against a, the terminal pin 3 is prevented from excessively entering, and the inner peripheral surface 4b of the pin holding portion 4 tightens the outer peripheral surface 3a of the terminal pin 3 to prevent the terminal pin 3 from coming off. ing.

[0003]

However, in the above-mentioned prior art, since the outer peripheral surface 3a of the terminal pin 3 is clamped by the inner peripheral surface 4a of the pin holding portion 4 as described above, the terminal pin 3 is I can hardly tilt. Therefore, when the display instrument 1 is attached to a mating member 11 (see FIG. 2) such as a circuit board and a wiring board, there is a dimensional error in the connection terminal 12 and the connection member 11, or after the attachment, If the dimension of the component is deviated due to the expansion due to the temperature, the terminal pin 3 is attached to the mating member 11
There is a case where the work of press-fitting into the connection terminal 12 becomes difficult, or when the press-fitting is forcibly performed, the terminal pin 3 and the connection terminal 12 of the mating member 11 are deformed, resulting in poor contact.

The present invention solves the above problems and facilitates the work of assembling a display instrument to a mating member, and
An object of the present invention is to provide a terminal pin connection structure of a display instrument capable of preventing deformation of the terminal pin and the connection terminal of the mating member.

[0005]

In order to solve the above-mentioned problems, a terminal pin connection structure of a display instrument according to the present invention has a rod-shaped terminal pin with respect to an insulating hollow cylindrical pin holding portion of a display instrument body. In a terminal pin connection structure of a display instrument, which is configured by press-fitting, a flange portion is formed on the terminal pin, and a recess for accommodating the flange portion is formed on an inner peripheral surface of the pin holding portion. The terminal pin is configured to be tiltable with the flange portion as a fulcrum.

[0006]

The display instrument is assembled to the mating member by pressing the terminal pin into the connecting terminal of the mating member. At the time of this assembly, if there is a dimensional error in the mating member and the connection terminal, the terminal pin is smoothly tilted around the flange portion as a fulcrum and press-fitted into the connection terminal. Therefore, the assembly is smoothly performed, and the deformation of the terminal pin and the connection terminal of the mating member can be prevented. Further, according to the present invention, it is possible to prevent the dimensional deviation caused by the difference in thermal expansion due to the temperature after assembling and the deformation of the connection terminal due to it.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a terminal pin connection structure of a display instrument according to an embodiment, and FIGS. 1 (A) and 1 (B) are vertical cross-sectional views in which cuts are perpendicular to each other. In addition, FIG. 2 is a partial cross-sectional view showing a state in which a display instrument having the connection structure is assembled to a mating member.

1 and 2, the display meter 1 is manufactured by connecting a rod-shaped terminal pin 3 to a display meter body 2.

The display instrument main body 2 has a pin holding portion 4 for holding the terminal pin 3. The pin holding portion 4 is formed of an insulating material in a hollow cylindrical shape, and is fixed to the case 5 of the display instrument main body 2 so as to partially project downward from the bottom surface 5a thereof. The pin holding portion 4 has a recess 6 inside the intermediate portion. As shown in FIG. 1, the concave portion 6 includes a lower end surface 7 a of the upper convex portion 7 and an upper end surface 8 a of the lower convex portion 8.
And the upper convex portion 7 and the lower convex portion 8 are formed.
Are intermittently formed on the inner peripheral surface of the pin holding portion 4 along the circumferential direction. The lower convex portion 8 is shown in FIG.
As is clear from (B), the height gradually decreases as it goes downward. A connection terminal 9 is arranged inside the upper portion of the pin holding portion 4. The connection terminal 9 is made of a leaf-spring-shaped conductive member and is pressed against the outer peripheral surface of the tip portion of the terminal pin 3.

The terminal pin 3 has a collar portion 10 in the middle thereof. As shown in FIG. 1, the collar portion 10 is housed in the recess 6 of the pin holding portion 4. Here, the diameter R of the collar 10 is slightly smaller than the inner diameter r of the recess 6, and the diameter of the collar 1
The thickness T of 0 is set to be slightly smaller than the width t of the recess 6, and the flange 10 is displaceable in the state of being housed in the recess 6. In other words, the terminal pin 3 is tiltably held by the pin holding portion 4. The diameter Rd of the lower end surface 10a of the collar portion 10 is the inner diameter rd of the upper end surface 8a of the lower convex portion 8.
It is set to be larger than that, making it impossible to remove the collar portion 10. The terminal pin 3 is press-fitted into the pin holding portion 4 to be integrated with the display meter body 2.

The display instrument 1 having the above structure is assembled to the mating member 11 by pressing the terminal pins 3 into the connecting terminals 12 of the mating member 11. In this assembly, if there is a dimensional error in the connection terminal 12 of the mating member 11, the terminal pin 3 smoothly tilts with the collar portion 10 as a fulcrum according to the connection terminal 12 of the mating member 11, and the connection terminal 12
Is pressed into. Therefore, the assembly is performed smoothly,
Further, the terminal pin 3 and the connecting terminal 12 of the mating member 11 are not deformed. According to the display instrument 1,
Dimensional deviation caused by difference in thermal expansion due to temperature after assembly,
It is also possible to prevent the connection terminal 12 from being deformed.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a terminal pin connection structure of a display instrument according to an embodiment.

FIG. 2 is a partial cross-sectional view showing a state in which a display instrument having the above-mentioned connection structure is assembled to a mating member.

FIG. 3 is a partial sectional view of a display instrument having a conventional connection structure.

[Explanation of symbols]

 1 Display instrument 2 Display instrument main body 3 Terminal pin 4 Pin holding part 6 Recessed part 10 Collar part

Claims (1)

[Claims] 1. A terminal pin connection structure for a display instrument, wherein a bar-shaped terminal pin is press-fitted into an insulating and hollow cylindrical pin holding portion of the display instrument body, wherein a flange portion is formed on the terminal pin. In addition, a recess for accommodating the collar portion is formed on the inner peripheral surface of the pin holding portion, and the terminal pin is configured to be tiltable around the collar portion as a fulcrum. Terminal pin connection structure.