JP2002098134A - Non-step tilt hinge of curl type - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tilt hinge in which dispersion of running torque to generate is reduced and some component parts are eliminated to lower the production cost. SOLUTION: In a non-step tilt hinge of a curl type compring a fit-up member having a curl part, a shaft which is force-fitted to the curl part of the fit-up member and is rotatable relatively against the fit-up member, and a bracket mounted on the shaft, a flat part is formed at least in a part of the inside of the curl part which is made press-contact with the axial portion of the shaft to specify the portion for creation of a friction torque.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
When used by being attached between the keyboard body and the display body of the device A, the keyboard body as the first member and the display body as the second member are relatively opened and closed, and stopped and held at an arbitrary opening angle. The present invention relates to a curl type stepless tilt hinge suitable for use in the present invention.

[0002]

2. Description of the Related Art Conventionally, as a curl type stepless tilt hinge, as shown in Japanese Patent Application Laid-Open No. H10-47337, a mounting member having a curled portion provided with elasticity and a curl portion of the mounting member are provided. 2. Description of the Related Art There is known a shaft formed by a press-fitted shaft and a bracket attached to the shaft, wherein the cross-sectional shape of the inside of the curl portion is formed as circular as possible to match the outer shape of the shaft.

[0003]

In this conventional device, a keyboard body which is a first member and a display member which is a second member which are relatively opened and closed are continuously stopped and held at an arbitrary open position. Although it can be called a stepless tilt hinge, as shown in FIGS. 6 and 7, the shape of the hole 10a of the curl portion 10 is completely the same for each component no matter how high the accuracy is. The point (indicated by a black circle) where the outer periphery of the shaft 11 press-fitted into the curl portion 10 hits the inside of the hole 10a of the curl portion 10 is indicated for each component. On the other hand, since the spring characteristics of the curl portion change, there is a problem that the rotational torque generated by each tilt hinge does not match.

Further, the gap between the inside of the curl portion 10 and the outer periphery of the shaft 11 which is press-fitted into the curl portion 10 is, of course, very small, so that the lubricating effect is not good. A collar having a plurality of small holes, grooves or recesses is press-fitted between the shaft 11 and the inside of the curl portion 10, so that the number of parts increases, which is one of the necks when lowering the manufacturing cost. Had become.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tilt hinge which minimizes the variation in the generated rotational torque and eliminates the components to reduce the manufacturing cost.

[0006]

In order to achieve the above-mentioned object, the present invention provides a mounting member having a curled portion provided with elasticity, and the mounting member press-fitted into the curled portion of the mounting member. A tiltable hinge of a curl type comprising a shaft rotatable relative to the shaft and a bracket attached to the shaft, wherein at least a part of the inside of the curl portion is pressed against an axial portion of the shaft. Part is provided.

In this case, according to the present invention, the curl portion can be constituted by an independent member and fixed to a separately provided housing.

According to the present invention, the curl portion can be constituted by at least two sets, and the curl directions can be reversed. In the present invention, the shaft may be a rotating shaft.

According to the present invention, the shaft may be fixed, and the mounting member may be configured to rotate around the axis of the shaft.

According to the present invention, one or more grooves and / or recesses for storing lubricating oil can be provided on the outer periphery of the shaft.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention. In FIGS. 1 to 5, an indication symbol 1 is an attachment member, for example, attached to a keyboard body 2 which is a first member. The embodiment is made by die-casting, and includes a mounting portion 1a and a holding portion 1b rising in a direction perpendicular to an end of the mounting portion 1a.
Mounting grooves 1c and 1d are provided in the vertical direction so as to be shifted back and forth. In addition, this attachment member 1 may be attached to the display body 3 which is the second member.

The mounting groove 1 of the holding portion 1b of the mounting member 1
c and 1d have curling members 4 and 5 with fixed pieces 4a and 5 respectively.
a, and is fixed to the holding portion 1b by the mounting screws 6, 6. The curl members 4 and 5 are fixed pieces 4a and 5a, respectively.
Are suspended from the axial center portions of the curl members 4 and 5 toward one side, and the mounting grooves 1c and 1 of the fixing pieces 4a and 5a are suspended.
By changing the mounting direction with respect to d, the curl members 4 and 5 are configured so that their axes coincide with each other.

In this embodiment, the die-cast mounting member 1 is eliminated, the curl members 4 and 5 are integrated into one body, a fixed piece is extended, and the fixed piece is fixed to the first member 2. May be configured. The hanging position of the fixed pieces 4a, 5a from the curled portions 4d, 5d is determined by the curled portions 4d, 5d.
You may make it coincide with the axial center of d.

The curl portions 4 of the curl members 4 and 5
The cross-sectional shape of each of the d and 5d is not a circular hole, but the flat portions 4b and 5b are formed on the leading end side of the winding portion so that the deformed holes 4 and 5d can be formed.
c, 5c are formed.

The one designated by reference numeral 7 is a shaft. This shaft comprises a shaft portion 7a having a circular cross section and a mounting portion 7b having a substantially elliptical cross section, and a bracket 8 is attached to the mounting portion 7b.
The deformed mounting hole 8a is inserted and fixed by the fixing pin 9.

The shaft 7 is provided with a flange 7c substantially at the center of the shaft 7a, and oil reservoirs 7d formed of inclined circumferential grooves are formed in left and right portions separated by the flange 7c in the direction of inclination. The portions provided with the oil reservoirs 7d are press-fitted into the deformation holes 4c, 5c of the curl portions 4d, 5d of the curl members 4, 5, respectively.

The bracket 8 has a stopper portion 8b protruding from an edge of the deformable mounting hole 8a so as to abut against a stopper piece 1e provided on the mounting member 1 at a rotation angle.

Therefore, as shown in FIG. 5, the point where the outer periphery of the shaft portion 7a of the shaft 7 which is press-fitted into the deformed holes 4c, 5c of the curled portions 4d, 5d of the curled members 4, 5 is flat. Since the spring characteristic is limited to each point A of the portions 4b and 5b and the facing surface B thereof, the spring characteristics are stabilized and the spring constant is kept low. As a result, the accuracy of the curled portions 4d and 5d of the curled members 4 and 5 is reduced. It is possible to create a constant and consistent friction torque without making it stricter.

Also, as shown in FIG. 5, the deformed holes 4c and 5c of the curls 4 and 5 and the shaft 7a of the shaft 7 are formed.
A gap C is formed between the two, and an oil pool is naturally formed here, and it is not necessary to use a collar as in the conventional case.

Further, if an oil reservoir 7d is provided also at the shaft portion 7a as shown in FIG. 2, the oil reservoir can be further enhanced. The shape and configuration of the oil reservoir 7d provided on the shaft portion 7a of the shaft 7 are not limited to those of the embodiment, and may be a plurality of recesses.

The assembling of the tilt hinge according to the present invention is performed by first setting the curled portions 4d and 5d of the curled members 4 and 5,
The shaft portions 7a of the shaft 7 are press-fitted into the respective deformed holes 4c, 5c from both ends of the shaft 7 until they come into contact with the flange portions, and then the fixing pieces 4a,
5a is inserted into the mounting grooves 1c and 1d, and is fixed to the mounting member 1 with the mounting screws 6 and 6. The attachment of the bracket 8 to the shaft 7 may be before or after attaching the curl members 4 and 5 to the attachment member 1. If there are a plurality of curl members 4 and 5, and the fixing portion is integrated, the flange 7c of the shaft 7 will be eliminated and an E-ring will be used.

[0022]

The present invention is configured as described above.
The following effects can be obtained.

According to the first aspect of the present invention, the portion where the shaft of the shaft comes into pressure contact with the deformation hole of the curl portion of the curl member is constant, such as the flat portion and the opposite side. Even if it is not stricter than the conventional one, it is possible to create an effect that a friction torque without variation can be created by stabilizing the spring characteristics.

Further, since the accuracy of the curled portion does not have to be stricter than in the past, the yield is improved, and furthermore, between the deformed hole of the curled portion and the shaft portion press-fitted into the deformed hole, Since there is a natural gap between the curled part of the deformed hole and the flat part, this gap becomes an oil reservoir, so there is no problem in lubrication even if the collar is omitted as in the conventional one. Accordingly, it is possible to achieve an effect that cost can be reduced by omitting the number of parts.

According to the structure of the second aspect, the same effect as that of the first aspect can be obtained, and further, the number of parts such as the E-ring can be omitted, and the operation of assembling can be easily performed.

According to the structure of the third aspect, the same effects as those of the first and second aspects can be obtained, and further, it is possible to obtain an effect that a stable stepless friction torque can be easily created.

With this configuration, the attaching member can be attached to, for example, the keyboard body which is the first member.

According to the fifth aspect of the present invention, the mounting member can be mounted on the display member as the second member.

According to the sixth aspect, the lubricating performance between the shaft and the curled portion can be further improved.

[Brief description of the drawings]

FIG. 1 is a front view of a curl-type stepless tilt hinge according to the present invention.

FIG. 2 is an exploded perspective view of the curl-type stepless tilt hinge shown in FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a right side view of the stepless tilt hinge shown in FIG. 1;

FIG. 5 is an explanatory diagram illustrating a main part of a curl-type stepless tilt hinge according to the present invention.

FIG. 6 is an explanatory diagram in which the problem of the conventional technique is slightly exaggerated.

FIG. 7 is an explanatory diagram in which a problem of the conventional technique is slightly exaggerated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Attachment member 2 1st member (keyboard main body) 3 2nd member (display body) 4 Curl member 4a Fixed piece 4b Flat part 4c Deformed hole 4d Curled part 5 Curl member 5a Fixed piece 5b Flat part 5c Deformed hole 5d Curl Part 7 Shaft 7a Shaft 7c Collar 7d Oil reservoir 8 Bracket

Claims (6)

[Claims] A mounting member having a curled portion provided with elasticity; a shift member rotatable relative to the mounting member press-fitted into the curled portion of the mounting member;
A curl type stepless tilt hinge comprising a bracket attached to the shaft, wherein a flat portion is provided on at least a part of the inside of the curl portion so as to be in pressure contact with an axial portion of the shaft. Stepless tilt hinge. 2. The curlless stepless tilt hinge according to claim 1, wherein the curl portion is formed of an independent curl member and is fixed to a separately provided mounting member. 3. The curl part comprises at least two sets, and curls in opposite directions.
The stepless tilt hinge of curl type described in 1. 4. The curl-type stepless tilt hinge according to claim 1, wherein the shaft is a rotary shaft. 5. The curl-type stepless tilt hinge according to claim 1, wherein the shaft is fixed, and the mounting member is configured to rotate around an axis of the shaft. 6. The curl-type stepless tilt hinge according to claim 1, wherein the shaft is provided with one or more grooves and / or recesses for storing lubricating oil on an outer periphery thereof.