JPH11112630A - Hinge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform miniaturization, simplify structure and to perform manufacture at low cost by providing a pair of cam parts on a position opposite of one side face on a fixed cam member and providing a projecting part to be in press contact with the cam part on a sliding cam member. SOLUTION: On the side of the flange part 2 of a shaft 1, the deformed shaft part 3 of the shaft 1 is inserted rotatably to a circular hole provided on the center part, and the fixed cam member 10 is locked by the flange part 2. The fixed cam member 10 is provided with plural locking grooves 10b for constituting a rotation stopper on the outer periphery and is provided with the cam part 12 composed of plural recessed parts and projected parts on one side face of it. On the side facing opposite to the cam part 12 of the fixed cam member 10 of the sliding cam member 13, the plural projecting parts 13b are provided. Then, a compression spring 14 is wound annularly the shaft 1 and elastically provided between the sliding cam member 13 and a fixing member 6, the sliding cam member 13 is pressurized to the side of the fixed cam member 10 at all times, and the projecting parts 13b are brought into press contact with the cam part 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device suitable for a small electronic device such as a portable telephone, a portable computer, an electronic organizer, and the like.

[0002]

2. Description of the Related Art Hitherto, this type of hinge device is called a tilt hinge, and various types of structures combining various cams and springs are known. However, there is a problem that the structure is too complicated for all of them and the production cost is high. In recent years, the industry has been exposed to a rough wave of cost reduction, and in the technical field of this kind of electronic equipment, there is a very severe demand for miniaturization and cost reduction.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hinge device which can meet the above-mentioned technical requirements of the hinge device and which can be manufactured in a small size, with a simple structure and at low cost. To be.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention comprises a shaft provided with a flange at one end, a shaft locked at the other end of the shaft and rotatable together with the shaft. A fixed member with a detent, a fixed cam member with a detent which is rotatably inserted into the center of the flange portion side of the rotary shaft so that the rotary shaft is rotatably inserted therethrough; and A sliding cam member which is provided between the fixed member and engages with the shaft inserted through the central portion, rotates with the shaft, but is slidable in the axial direction; A compression spring spring-wound while being wound around the shaft. The fixed cam member is provided with a pair of cam portions at opposing positions on one side surface of the compression cam member. Characterized in that a protrusion for pressing the.

[0005] The invention also provides a flange at one end,
A synthetic resin shaft provided with a deformed shaft portion at the center, a locking groove for mounting a locking ring and a peripheral groove for mounting an E ring at the other end, and an end of the deformed shaft portion of the shaft; A fixing member made of synthetic resin with a detent that can be rotated together with the rotating shaft locked by receiving and locking the locking ring locked inside, and a fixing member made of a synthetic resin on the flange portion side of the rotating shaft. A fixed cam member made of synthetic resin with a detent that is rotatably inserted through the center of the rotating shaft so as to be rotatably engaged therewith, and is opposed to the fixed cam member and is engaged with a deformed shaft portion of the shaft in the axial direction. The fixed cam member comprises a synthetic resin sliding cam member slidably mounted, and a compression spring which is elastically wound around the shaft between the sliding cam member and the fixed member. The cam on one side The provided, wherein the sliding cam member, characterized in that a plurality of protrusions for pressing said cam portion.

The present invention also relates to a hinge device for connecting a transmitting section and a receiving section of a portable telephone to each other, wherein an attaching section provided at one end of the transmitting section or the receiving section. A shaft in which a fixing member with a detent secured to the accommodation hole provided in the axial direction of the shaft is locked at one end, and an insertion hole provided in the axial direction at the center of the shaft at one end of the shaft. While the shaft is rotatably inserted, the shaft is locked by the flange portion of the shaft, and is housed in a housing hole provided in the axial direction of the mounting portion on the side of the transmitting or receiving portion on which the fixing member is not fixed. A fixed cam member with a rotation stopper, which is mounted and fixed, and a shaft provided between the fixed cam member and the fixed member, which is engaged with the shaft inserted therethrough and rotates together with the shaft, but slides in the axial direction. Movable sliding cam member and this sliding cam A compression spring elastically wound around the shaft between the material and the fixing member, a cam portion is provided on one side of the fixed cam member, and the sliding cam member has the cam portion. It is characterized in that a convex portion which comes into pressure contact with the portion is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention. In FIGS. 1 to 3, reference numeral 1 denotes a shaft made of a synthetic resin such as POM, and the shaft 1 has a flange provided at one end thereof. Part 2, a deformed shaft part 3 having a substantially elliptical cross-section provided following the flange part 2, and an engaging groove 4 for attaching a locking ring formed in an end of the deformed shaft part 3, respectively.
And a peripheral groove 5 for an E-ring. Reference numeral 6 is a fixing member made of a synthetic resin such as POM. The fixing member 6 has a stepped hole 7 formed of a circular hole 7a for attaching a locking ring and an elliptical deformed hole 7b in the axial direction of the central portion, and a plurality of locking grooves 6a forming a detent on the outer periphery. , 6a, and the like, the deformation shaft portion 3 of the shaft 1 is inserted into the deformation hole 7b and locked, and the locking ring 8 fitted in the engagement groove 4 of the shaft 1 is provided.
Is accommodated in a circular hole 7a inside the stepped hole 7 and locked in the deformed hole 7b, so that the shaft 1 is prevented from falling out and rotated together with the shaft 1.
Is fixed. An E-ring 9 is fitted in the other circumferential groove 5. On the flange portion 2 side of the shaft 1, a deformable shaft portion 3 of the shaft 1 is rotatably inserted into a circular hole 10a provided at the center thereof, and a fixed cam member 10 made of synthetic resin such as SW-01 is provided. The flange 2 is locked by the flange 2 and the fixed cam member 1.
A friction plate 11 made of, for example, a synthetic resin such as nylon or the like is interposed between the base plate 0 and the cylindrical shaft 3 while the deformed shaft portion 3 is inserted through a circular hole 11a provided at the center thereof. The fixed cam member 10 is further provided with a plurality of locking grooves 10b, 10b,. Is provided. The width of the locking groove 6a of the fixing member 6 and the width of the locking groove 10b of the fixed cam member are different, and the depth and width of the locking groove 6a of the fixing member 6 are deeper and wider. Has become. Fixed cam member 1
The deformed shaft 3 is inserted between the fixed member 6 and the fixed member 6 through a deformed insertion hole 13a provided in the axial direction of the center portion thereof, for example, 63.
A sliding cam member 13 made of a synthetic resin such as 02T is attached to the shaft 1 so as to be slidable in the axial direction of the deformable shaft portion 3 and rotatable together with the shaft 1. A plurality of projections 13b, 13b are provided on a side surface of the sliding cam member 13 facing the cam portion 12 of the fixed cam member 10. A compression spring 14 is elastically provided between the sliding cam member 13 and the fixed member 6 by being wound around the shaft 1 so as to constantly press the sliding cam member 13 toward the fixed cam portion member 10, The convex portions 13b, 13b are pressed against the cam portion 12. Incidentally, the size of the entire hinge is approximately 5φ in the outer diameter of the largest part thereof, and the hinge is a small size of about 10 mm in the entire length of the hinge.

FIGS. 4 to 6 show a case where the hinge device according to the present invention is used for a portable telephone. The hinge devices A and B according to the present invention are used, in particular, as shown in FIG. 4, in a pair of left and right sides, and are provided with mounting portions 15a and 15a provided at respective ends of a transmitting section 15 and a receiving section 16 of a portable telephone 17. 16a, 1
The mounting holes 15b, 15b (only one is shown) provided in 6a and the mounting holes 16b, 16b (only one is shown) are stored and fixed inside. For example, the hinge devices A, B are inserted from the mounting holes 15b, 15b side,
The locking member 6 is engaged with the locking projections 16c, 16c provided in the mounting holes 16b, 16b so that the fixing member 6 can be attached to the mounting portions 16a, 16 of the earpiece 16.
a into the mounting holes 16b, 16b, and then the locking grooves 10b, 10b,.
Are attached to the attaching portions 15a of the transmitting section 15, the attaching holes 15b of the 15a,
15b, and locking projections 15c, 15c provided there.
... and fixed.

Next, the E-ring 9 is fitted into the peripheral groove 5 of the deformed shaft portion 3 of the shaft 1 protruding from the end of the mounting portion 16 so that the hinge devices A and B do not come off.
It locks to 6,16. When the transmission section 15 is opened and closed with respect to the reception section 16 in this manner, the shaft 1 is attached to the mounting section 16 a of the reception section 16 via the fixing member 6.
Will rotate with it. However, the opening and closing of the transmitting unit 15 and the receiving unit 16 are relative, and the transmitting unit 15 is connected to the receiving unit 1.
6 may be opened and closed. In this case, the fixed cam member 10 rotates around the shaft 1 together with the mounting portion 16a that locks and fixes the fixed cam member 10. The depth and width of the locking groove 6a of the fixing member 6 are determined by the locking groove 10b of the fixing cam member 10.
When it is made deeper and wider, there is an advantage that when the fixing member 6 is inserted first through the mounting hole 16b, it is not caught by the locking projection 16c.

In FIG. 7 and FIG. 9, when the transmitting section 15 is closed with respect to the receiving section 16 at 0 °, the projection 13b of the sliding cam member 13 is connected to the cam section 1 of the fixed cam member 10.
2 in the position inside the concave portion 12a. Since the concave portion 12a in which the convex portion 13b has dropped from this 0 ° state still has enough depth, that is, since the convex portion 13b has not completely dropped into the concave portion 12a, the transmitting section 15 moves in the closing direction. By being urged to rotate, it is locked in this state and does not open naturally. When the transmitting section 15 is opened, the convex section 13
The b moves from the concave portion 12a of the cam portion 12 to the convex portion 12b, and when the opening angle is about 160 °, the cam portion 12 is automatically opened by falling back into the concave portion 12a. At this time, the projection 13b is completely dropped into the recess 12a and locked. And it becomes possible to open further more than 160 degrees. When the transmission unit 15 is closed with respect to the reception unit 16 after use, the projection 13b is automatically closed as it is sucked by dropping into the recess 12a,
Since the projection 13b does not completely fall into the recess 12a, the closed state is maintained as described above.

The control by the hinge device according to the present invention at the time of opening / closing operation of the transmitting section 15 can be performed in various variations by changing the shapes and installation positions of the cam section and the convex section in addition to those described above. By doing so, the feeling at the time of the opening and closing operation can be changed. Thus, the hinge device according to the present invention can be used as a hinge device for opening and closing a display body of another small electronic device.

As another embodiment, there is no limitation on the fixing means for fixing the fixing member and the fixing cam member to the respective mounting portions. The fixed member and the fixed cam member are locking projections,
The fixing pins may be fixed to the mounting portions by means such as a deformed outer peripheral portion such as a polygonal outer peripheral portion or the like. Further, the member provided with the convex portion 13b and the cam portion 12 may be reversed from that of the above-described embodiment. The shapes and installation positions of the projections and depressions can be variously changed depending on the application.

[0013]

The present invention is configured as described above.
Its small size, small number of parts, and simple structure can greatly reduce the manufacturing cost.When this is used for a portable telephone, the transmitter and receiver are stably locked in a closed state. The hinge device of a portable telephone can be stopped at a free stop, or can be stably stopped at the most frequently used opening angle. Can perform the required functions.

At this time, all or a part of the shaft, the fixed member, the fixed cam member, the sliding cam member, the friction washer and the like except for the compression spring, the locking ring and the E-ring of the components are made of synthetic resin. If it is made of a molded part or a molded part, it can be manufactured at a lower cost, and this has the effect of significantly reducing the manufacturing cost.

Further, according to the present invention, since the locking ring locked to the shaft is locked to the stepped hole provided in the center of the fixing member, the end of the shaft protruding from the fixing member. Since the means for locking and fixing the shaft to the fixing member does not protrude, there is sufficient room for mounting the E-ring, and the entire length of the hinge device is shortened to reduce the size, thereby eliminating installation space. Is what you can do. Further, the fixing by the locking ring is E
It is stronger than that provided by the ring, and can securely fix the shaft to the fixing member.

The hinge device according to the present invention can be used for opening and closing a display body of a small electronic device other than a portable telephone. By changing, the required functions can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a front view of a hinge device according to the present invention.

FIG. 2 is a right side view of the hinge device shown in FIG.

FIG. 3 is an exploded perspective view of the hinge device shown in FIG.

FIG. 4 is a partially exploded perspective view of a portable telephone implementing the hinge device according to the present invention.

FIG. 5 is a side view of the portable telephone shown in FIG. 4 in an open state.

6 is an enlarged sectional view of a portion of a hinge device of the portable telephone device shown in FIG.

FIG. 7 is an enlarged sectional view corresponding to the enlarged sectional view shown in FIG. 6 and explaining its operation.

FIG. 8 is an explanatory diagram for explaining the operation at 0 ° of the fixed cam member and the sliding cam member.

FIG. 9 is an explanatory diagram for explaining the operation at 160 ° of the fixed cam member and the sliding cam member.

[Explanation of symbols]

 A, B Hinge device 1 Shaft 2 Flange part 3 Deformation shaft part 4 Engagement groove 5 Peripheral groove 6 Fixing member 6a Locking groove (rotation stop) 7 Stepped hole 8 Locking ring 9 E ring 10 Fixed cam member 10b Locking Groove (rotation stop) 11 Friction plate 12 Cam part 13 Sliding cam member 13b Convex part 14 Compression spring 15 Transmitter part 16 Receiver part 17 Mobile phone

Claims (3)

[Claims] 1. A shaft provided with a flange at one end, a fixed member with a detent locked to the other end of the shaft and rotatable together with the shaft, and a flange portion side of the rotary shaft. A fixed cam member with a detent that is rotatably inserted through the center of the rotary shaft and locked, and the shaft provided between the fixed cam member and the fixed member and inserted through the center. And a compression spring that rotates together with the shaft but is slidable in the axial direction, and a compression spring elastically wound around the shaft between the slide cam member and the fixed member. A hinge device, wherein the fixed cam member is provided with a pair of cam portions at opposing positions on one side surface thereof, and the sliding cam member is provided with a convex portion which is in pressure contact with the cam portion. 2. A synthetic resin shaft having a flange at one end, a deformed shaft at the center, and an engaging groove for attaching a locking ring and a peripheral groove for attaching an E-ring at the other end. And a locking member made of a synthetic resin with a detent that is locked by receiving and locking a locking ring that is locked to the end of the deformed shaft portion of the shaft and rotatable together with the rotating shaft. A fixed cam member with a detent that is rotatably inserted into the center of the flange portion side of the rotary shaft so as to be rotatably inserted into the center portion thereof, and a deformed shaft portion of the shaft facing the fixed cam member. A sliding cam member made of synthetic resin which is engaged with the sliding cam member so as to be slidable in the axial direction, and a compression spring wound around the shaft and elastically provided between the sliding cam member and the fixing member. Comprising the fixed cam member Has a cam on one side,
A hinge device, wherein the sliding cam member is provided with a plurality of convex portions which are in pressure contact with the cam portion. 3. A hinge device for connecting a transmitting section and a receiving section of a portable telephone to each other, wherein an axial direction of a mounting section provided at one end of the transmitting section or the receiving section. A shaft having a locking member fitted with a rotation stopper, which is fixed to the receiving hole provided at the one end thereof, is locked at one end, and the shaft is rotated through an insertion hole provided at one end of the shaft in the axial direction at the center thereof. It is locked by the flange portion of the shaft while being inserted as much as possible, and is fixed to a receiving hole provided in the axial direction of the mounting portion on the side of the transmitting portion or the receiving portion where the fixing member is not fixed. A non-rotating fixed cam member and a shaft provided between the fixed cam member and the fixed member, which is engaged with the shaft inserted through the center thereof and rotates together with the shaft but is slidable in the axial direction. A sliding cam member, and the sliding cam member and the fixed portion A compression spring elastically provided around the shaft while being wound around the shaft, and a cam portion provided on one side of the fixed cam member,
A hinge device, wherein the sliding cam member is provided with a convex portion that comes into pressure contact with the cam portion.