Releasable double-hinge device for an automobile console box

Abstract: A double-hinge device according to the invention enables the lid of a console box to be smoothly opened from either of a pair of opposite edges from a closed position or conversely closed and locked from an open position by a simple operation. A shaft 3 is arranged along each of the opposite edges of the main body 1 of the console box and an engagement/release mechanism 4 is arranged to the corresponding edge of the lid 2. The shaft 3 is securely embraced by pivotally arranged primary arm 4a and secondary arm 4b under the effect of the resilient force of a return spring 5 fitted between the primary arm 4a and the lid 2. The movement of the secondary arm 4b is dependent on that of the primary arm 4a when the latter is operated to release the shaft from the primary and secondary arms 4a and 4b and open the lid. The lid can be closed simply by pushing it downward until the shaft 3 abuts primary and secondary inclined end surfaces 4k, 4l of a recessed area 6 and then opens the primary and secondary arms 4a and 4b against the resilient force of the return spring 5 so that the shaft 3 is embraced by the arms.

Description: BACKGROUND OF THE INVENTION [Technical Field] This invention relates to a releasable double-hinge device to be suitably used for the lid of an automobile console box or of an electric rice boiler or the door of a cabinet in order for the lid or the door to be capable of being opened from either of opposite ends and totally removed. [Prior Art] As shown in Fig. 7 of the accompanying drawings, an automobile is normally provided at a side of the driver's seat a with a console box b for storing small items and having a lid c which is preferably hinged not only at the front end d but also at the rear end e , for the user's convenience. Figs. 8(A) and 8(B) show that the lid of the console box is hinged at both the front and rear ends and therefore can be swung open in the direction of not only arrow f but also arrow g . Fig. 8(C) shows that the lid C can be totally removed from the console box whenever necessary. Figs, 9(A) and 9(B) shown known releasable double-hinge devices to be used for such a console box. With a known releasable double-hinge device as illustrated in Fig. 9(A) and disclosed in Japanese Patent Tokkai Shou No. 60-242275, the box main body h is provided at a side as well as at the opposite side with a pair of oppositely arranged lock holes i , into which a pair of lock pins k arranged on the corresponding side of the lid j can be respectively introduced firstly by depressing them by means of a hand-operated implement (not shown) against the resilient force of a built-in spring and thereafter by releasing them into the respective holes. Obviously, such operation is cumbersome as it requires manipulation of an implement particularly when the lid j is removed because both hands should be used for the operation. With another known releasable double-hinge device as illustrated in Fig. 9(B) and disclosed in Japanese Patent Jitsukai Shou No. 60-90042, the box main body 1 is provided at each of a pair of opposing sides with a pair of oppositely arranged pins m and n , which are received by respective C-shaped deformable bearings p or q arranged on the corresponding edges of the lid o . The lid o equipped with such a double-hinge device would not rotate smoothly when the engagement between the pin and the bearing is loose, whereas it should be removed and put back in position with considerable effort if a smoothly rotatable engagement is to be achieved between the pin and the bearing. FR 2 623 779 discloses a similar double hinge device for a box of the type having a main body provided with an opening in its top, and a lid for closing the opening in the box, the hinge comprising a pair of shafts arranged along opposite edges of the main body of the box and a pair of engagement/release mechanisms arranged along the corresponding respective edges of the lid and releasably engaged with the respective shafts, the engagement/release mechanisms each comprising a primary arm pivotally arranged around a pin and having at its lower end a shaft-engaging curved surface for releasably engaging the shaft, and a locking top connected to an inclined end surface, each of said engagement/release mechanisms further comprising a return spring arranged between the primary arm and the lid for biassing the arm into a closed position, the lid being rotatable about the shaft on either opposite edge of the box to an open position by raising the primary arm of the engagement/release mechanism on the opposite edge of the box against the bias of the spring so as to release the shaft, the lid being rotatable into a closed position by pushing the lid down to bring the inclined end surface of the primary arm of the engagement/release mechanism into abutment with the shaft thereby raising the primary arm against the bias of the spring until its shaft-engaging curved surface embraces the shaft. SUMMARY OF THE INVENTION The object of the invention as seen from a first aspect is to provide a releasable double-hinge device for an automobile console box according to FR 2 623 779, but which alleviates various problems and disadvantages with it. Therefore, the releasable double-hinge device is characterised in that the engagement/release mechanisms each further comprise secondary arm pivotally arranged around a pin and having at its lower end a shaft engaging curved surface for releasably engaging the shaft, and a locking tip connected to an inclined end surface, the primary and secondary arms crossing each other and having complementary engaging transmission sections at their upper ends, the primary arm having a stop which limits the closing motion of the secondary arm, the primary and secondary arms being arranged such that when the primary arm is raised to open the lid, the lower ends of the arms move apart to release the shaft, a recessed area formed by the crossing primary and secondary inclined end surfaces of the arms coming into abutment with the shaft when the lid is closed such that the lower ends of the arms move apart until their shaft-engaging curved surfaces embrace the shaft from opposite sides. Thus the primary and secondary arms of each engagement/release mechanism form a scissor-like arrangement which embraces the shaft under the bias of the spring. The lid can be easily and smoothly opened and rotated about one of the shafts embraced by the corresponding engagement/release mechanism by simply raising the primary arm of the other engagement/release mechanism so that it releases the corresponding shaft. The lid can be easily and smoothly closed and held in the locked condition by simply pushing down the lid to make the primary and secondary arms move apart to embrace the corresponding shaft. The lid can be totally removed from the box main body by simply raising the two primary arms simultaneously. The object of this invention as seen from a second aspect is to provide a double-hinge device of the type described above, but which has primary and secondary arms held constantly under a locked condition, so that the lid is securely held in its closed position and thus is less susceptible to unintentional opening caused by any pitching or rolling movement. Therefore the releasable double-hinge device is characterised in that the engagement/release mechanisms each further comprise secondary arm pivotally arranged around a pin and having at its lower end a shaft engaging curved surface for releasably engaging the shaft, and a locking tip connected to an inclined end surface, the primary and secondary arms crossing each other and having complementary engaging transmission sections at their upper ends, the engagement/release mechanism further comprising a return spring arranged between the secondary arm and the lid for holding the arm in the closed position, the primary and secondary arms being arranged such that when the primary arm is raised to open the lid, the lower ends of the arms move apart to release the shaft, a recessed area formed by the crossing primary and secondary inclined end surfaces of the arms coming into abutment with the shaft which the lid is closed such that the lower ends of the arms move apart until their shaft engaging curved surfaces embrace the shaft from opposite sides. With such an arrangement, the lid may be opened from either side. The lid of the console box may be totally removed when the above described operation of opening the lid is conducted simultaneously at both edges where the engagement/release mechanisms are arranged. While only the primary arms of a double-hinge device according to the first aspect of the invention are harnessed by return springs and the secondary arms can be freely pivoted relative to the respective primary pins, both the primary and secondary arms of a double-hinge device according to the second aspect of the invention are harnessed by return springs and therefore the secondary arms would not be freely pivoted relative to the respective primary pins so that a recessed area is constantly maintained for each engagement/release mechanism and any danger of unintentionally releasing the engagement between the engagement/release mechanisms and the respective shafts may be eliminated. Now, the present invention will be described in greater detail by referring to the accompanying drawings that illustrate a preferred embodiment of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional front view of a preferred embodiment of the invention applied to a console box, showing only the principal areas of the console box, where the lid of the box is opened. Fig. 2 is another sectional front view of the embodiment of Fig. 1, where the lid of the box is closed. Fig. 3 is a plan view of the lid of the console box of Fig. 1 to which the embodiment is applied. Fig. 4 is a perspective view of the one of the engagement/release mechanisms of the embodiment of Fig. 1. Fig. 5 is a sectional front view of the engagement/release mechanism of Fig. 4, showing a state where it is opened. Fig. 6 is a sectional front view of an engagement/release mechanism obtained by modifying the engagement/release mechanism of Fig. 4, showing a state where it is closed. Fig. 7 is a perspective view of a known automobile console box. Fig. 8(A), 8(B) and 8(C) are schematic side views of the console box of Fig. 7 showing respectively when it is opened from the right, when it is opened from he left and when the box lid is totally removed. Fig. 9(A) is a partial perspective view of a known console box and Fig. 9(B) is a sectional side view of another known console box. DETAILED DESCRIPTION OF THE INVENTION Referring to Figs. 1 and 2 showing a preferred embodiment of the invention, reference numeral 1 denotes the main body of a console box having an opening 1a and 2 denotes a lid for removably covering the opening 1a. A pair of lateral shafts 3, 3 are arranged along oppositely disposed respective edges 1b, 1e of the opening 1a of the box main body 1, while a pair of engagement/release mechanisms 4, 4 are arranged along the corresponding respective edges of the lid 2, each of said shafts 3, 3 being combined with corresponding one of the engagement/release mechanisms 4, 4 to form a hinge. As shown in Fig. 3, said engagement/release mechanisms 4, 4 are received in respective indentations 2a, 2a arranged at the middle of said opposite edges of the box lid 2. Each of said engagement/release mechanisms 4, 4 comprises a primary arm 4a, a secondary arm 4b combined with said primary arm 4a in crossed manner to operate as a pair of pincers, a primary pin 4c for pivotally holding said primary arm 4a and a secondary pin 4d for pivotally holding said secondary arm 4b, said primary pin 4c and secondary pin 4d being arranged in parallel with the corresponding shaft 3 and securely fitted to the box lid 2. The primary arm 4a and the secondary arm 4b are provided on the upper surface respectively with a primary transmission section 4e and a secondary transmission section 4f, which are parallel ridges or a similar frictional arrangement for ensuring frictional engagement of the surfaces. They are also provided at a lower portion respectively with a primary shaft holding curved surface 4g and a secondary shaft holding curved surface 4h, which are arranged face to face to securely hold the corresponding shaft 3. The lower end of the primary arm 4a and that of the secondary arm 4b respectively constitute a primary locking tip 4i and a secondary locking tip 4j. The inclined surface between the primary shaft holding curved surface 4g and the primary locking tip 4i and the corresponding inclined surface between the secondary shaft holding curved surface 4h and the secondary locking tip 4j are respectively designated here primary inclined end surface 4k and secondary inclined end surface 4l, which face downward. The primary arm 4a is provided with a handle 4m which is integral with the primary transmission section 4e and extends outwardly. Said handle 4m has a U-shaped plan view and the secondary transmission section 4f is located within the inner space of the U-shaped handle 4m. Referring again to Figs. 1 and 2, a return coil spring 5 is arranged around the primary pin 4c with its one end rigidly fitted to the primary arm handle 4a and the other end to the lid 2 so that said primary arm 4a is normally held to the position shown in Fig. 2. Under this condition, the secondary arm 4b is urged to hold the lid in its closed position by the rotary moment of the secondary pin 4d due to the resilient force of the coil spring and the front extremity of the secondary locking tip 4j abuts a stopper 4n arranged on the primary arm 4a. Under the normal condition of the device as described above, the primary inclined end surface 4k of the primary arm 4a and the secondary inclined end surface 4l of the secondary arm 4b intersect each other at a position immediately below the shaft 3 to form a recessed area 6. The primary and secondary inclined end surfaces 4k and 4l are preferably tilted by 45° relative to a horizontal line under this condition. In Fig. 6 showing a modified configuration of the engagement/release mechanism, while a primary return coil spring 5a is arranged around the primary pin 4c with its one end rigidly fitted to the primary arm 4a and the other end to the lid 2 as in the case of Figs. 1 and 2, a secondary return coil spring 5b is also arranged around the secondary pin 4d of the secondary arm 4b with its one end rigidly fitted to the secondary arm 4b and the other end to the lid 2. With such an arrangement, not only the primary arm 4a but also the secondary arm 4b are urged to hold the lid in the closed position by the resilient force of the coil springs. Therefore, this modified configuration differs from the configuration of Figs. 1 and 2 in that the secondary arm 4b is not freely rotatable around the secondary pin 4d. The lid 2 of a console box provided with a releasable double-hinge device having a configuration as described above is held to its closed position and remains in a locked condition as long as the shafts 3, 3 are firmly caught by the respective engagement/release mechanisms as the primary arms 4a, 4a are held to their normal positions by the return springs 5, 5 and the secondary arms 4b, 4b are held to their proper positions by the rotary moment so that the shafts 3, 3 are embraced by the respective combinations of the primary and secondary locking tips 4i, 4j, and 4i, 4j as each combined primary and secondary locking tips 4i, 4j cross with each other. When the handle 4m of either of the engagement/release mechanisms 4 4, is pushed upward, the primary arm 4a is rotated around its pin in the sense as indicated by arrow A against the resilient of the return spring 5 to turn the secondary transmission section 4f by way of the primary transmission section 4e so that the secondary arm 4b is consequently rotated in the sense as indicated by arrow B to form a gap G between the primary locking tip 4i and the secondary locking tip 4j, through which the shaft can come out. Therefore, if the handle 4m is lifted further upward, the engagement/release mechanism 4 eventually leaves the shaft 3 and the lid 2 can be rotate around the other shaft which is firmly caught by the other engagement/release mechanism 4 to become open so that the inside of the console box is accessibly through the opening 1a. When the lid 2 is pushed downward for closing, on the other hand, the shaft 3 comes to abut the primary inclined end surface 4k and the secondary inclined end surface 4l since the arms 4a and 4b of the engagement/release mechanism 4 are in the closed positions respectively due to the resilient force of the coil spring 5 and the rotary moment of the arm 4b. However, the primary and secondary locking tips 4i and 4j are easily rotated in the respective directions of arrow A and B against the resilient force of the coil spring 5 to open and embrace the shaft between the primary shaft holding curved surface 4g and the secondary shaft holding curved surface 4h under a locked condition. It may be needless to say that the lid 2 may be totally removed from the box main body 1 when both handles 4m, 4m of the engagement/release mechanisms 4, 4 are moved upward simultaneously to release the respective shafts 3, 3. As is apparent from the above description, since the engagement/release mechanisms of a double-hinge device according to the first aspect of the invention can smoothly rotate around the respective shafts and be easily released from the respective shafts by a simple operation and, moreover, since the primary and secondary arms of each of the engagement/release mechanisms return to the position where they embrace the corresponding shaft to hold the lid of a console box equipped with the device to a closed condition once the operation of opening the lid is terminated, the lid can be easily and quickly opened or closed and, if necessary, it can be completely removed from the box main body by a simple operation. Since both the primary and secondary arms of each of the engagement/release mechanisms of a double-hinge device according to the second aspect of the invention are provided with a return spring, both arms are firmly held to the normal position without any danger of unintentionally releasing the corresponding shaft, the lid of a console box equipped with the device is firmly held to a closed condition even when the box is subjected to rolling or pitching motion. Either device can be manufactured at relatively low cost as it has a simple configuration. Moreover, it is substantially free from malfunctions and can be repaired easily if it becomes defective.

Claims: A releasable double-hinge device for an automobile console box (1) having a main body provided with an opening in its top and a lid (2) for closing the opening in the box, the hinge comprising a pair of shafts (3,3) arranged along opposite edges of the main body of the box and a pair of engagement/release mechanisms (4,4) arranged along the corresponding respective edges of the lid (2) and releasably engaged with the respective shafts (3,3), the engagement/release mechanisms (4,4) each comprising a primary arm (4a) pivotally arranged around a pin (4d) and having at its lower end a shaft-engaging curved surface (4g) for releasably engaging the shaft, and a locking top (4i) connected to an inclined end surface (4k), each of said engagement/release mechanisms (4,4) further comprising a return spring (5) arranged between the primary arm (4a) and the lid (2) for biassing the arm into a closed position, the lid (2) being rotatable about the shaft (3 or 3) on either opposite edge of the box to an open position by raising the primary arm (4a) of the engagement/release mechanism on the opposite edge of the box against the bias of the spring so as to release the shaft (3), the lid (2) being rotatable into a closed position by pushing the lid (2) down to bring the inclined end surface (4k) of the primary arm (4a) of the engagement/release mechanism into abutment with the shaft (3) thereby raising the primary arm (4a) against the bias of the spring until its shaft-engaging curved surface (4g) embraces the shaft (3) characterised in that the engagement/release mechanisms (4,4) each further comprise secondary arm (4b) pivotally arranged around a pin (4c) and having at its lower end a shaft engaging curved surface (4h) for releasably engaging the shaft, and a locking tip (4j) connected to an inclined end surface (41), the primary and secondary arms (4a,4b) crossing each other and having complementary engaging transmission sections (4f,4e) at their upper ends, the primary arm (4a) having a stop (4n) which limits the closing motion of the secondary arm (4b), the primary and secondary arms (4a,4b) being arranged such that when the primary arm (4a) is raised to open the lid (2), the lower ends of the arms (4a,4b) move apart to release the shaft (3), a recessed area (6) formed by the crossing primary and secondary inclined end surfaces (4k,4l)of the arms (4a,4b) coming into abutment with the shaft (3) when the lid is closed such that the lower ends of the arms move apart until their shaft-engaging curved surfaces (4g,4h) embrace the shaft (3) from opposite sides. A releasable double-hinge device for an automobile console box (1) having a main body provided with an opening in its top and a lid (2) for closing the opening in the box, the hinge comprising a pair of shafts (3,3) arranged along opposite edges of the main body of the box and a pair of engagement/release mechanisms (4,4) arranged along the corresponding respective edges of the lid (2) and releasably engaged with the respective shafts (3,3), the engagement/release mechanisms (4,4) each comprising a primary arm (4a) pivotally arranged around a pin (4d) and having at its lower end a shaft-engaging curved surface (4g) for releasably engaging the shaft, and a locking tip (4i) connected to an inclined end surface (4k), each of said engagement/release mechanisms (4,4) further comprising a return spring (5a) arranged between the primary arm (4a) and the lid (2) for holding the arm in a closed position, the lid (2) being rotatable about the shaft (3,3) on either opposite edge of the box to an open position by raising the primary arm (4a) of the engagement/release mechanism on the opposite edge of the box against the bias of the spring so as to release the shaft (3), the lid (2) being rotatable into a closed position by pushing the lid (2) down to bring the inclined end surface (4k) of the primary arm (4a) of the engagement/release mechanism into abutment with the shaft (3) thereby raising the primary arm (4a) against the bias of the spring until its shaft-engaging curved surface (4g) embraces the shaft (3) characterised in that the engagement/release mechanisms (4,4) each further comprise secondary arm (4b) pivotally arranged around a pin (4c) and having at its lower end a shaft engaging curved surface (4h) for releasably engaging the shaft, and a locking tip (4j) connected to an inclined end surface (4l), the primary and secondary arms (4a,4b) crossing each other and having complementary engaging transmission sections (4f,4e) at their upper ends, the engagement/release mechanism further comprising a return spring (5b) arranged between the secondary arm (4b) and the lid (2) for holding the arm in the closed position, the primary and secondary arms (4a,4b) being arranged such that when the primary arm (4a) is raised to open the lid (2), the lower ends of the arms (4a,4b) move apart to release the shaft (3), a recessed area (6) formed by the crossing primary and secondary inclined end surfaces (4k,4l) of the arms (4a,4b) coming into abutment with the shaft (3) which the lid is closed such that the lower ends of the arms move apart until their shaft engaging curved surfaces (4g,4h) embrace the shaft (3) from opposite sides.

Inventors: AIHARA MASAHIRO, SUZUKI HIROYUKI, AIHARA, MASAHIRO, SUZUKI, HIROYUKI
Applicants: KATO HATSUJO KAISHA LTD, KATO HATSUJO KAISHA LTD.
Application year: 1991
Main classification: E05D15
IPC codes: F16B45, B65D43, E05D15, B60R7