JP3703085B2 - Hinge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of hinges (hinges) for pivotally supporting swinging members such as doors, bonnets, and covers.
[0002]
[Prior art]
In general, some of these types of swinging members are pivotally supported via hinges (hinges), and in this case, a pair of adjacent swinging members are connected to each other on adjacent edges. May be mounted so as to be pivotably supported. In such a case, when the two oscillating members are closed while avoiding the interference of the oscillating members when one oscillating member is opened and oscillated between the two oscillating members, From the viewpoint of appearance and the like, it is required to make the gaps as small as possible. Therefore, conventionally, as shown in FIG. 9, the hinge 20 that pivotally supports each of the swing members 21 and 22 is an arm type, and one of the swing members 21 is swinged open. It is known that the opened swinging member 21 moves above the other swinging member 22, thereby reducing the gap in the closed state and avoiding interference when opened. ing.
[0003]
[Problems to be solved by the invention]
However, in the conventional device, when both the swinging members 21 and 22 are closed, the arms 23 and 24 of the hinge 20 swing from the lower side of the swinging support shafts 25 and 26, respectively. As a result, the arms 23 and 24 are located in parallel between the positions where the members are attached, and as a result, the respective portions where the arms 23 and 24 are provided become dead spaces that obstruct the arrangement of the members. There is a problem to be solved by the present invention.
[0004]
[Means for Solving the Problems]
The present invention has been created in order to solve these problems in view of the above circumstances, and the first and second support shafts arranged close to each other in parallel are used as swing support shafts. When the first and second swinging members are attached via the first and second mounting members that are pivotally supported, the first and second mounting members are arranged in a hook shape in the direction of the spindle axis so as not to interfere with each other. And the first attachment body is formed to project toward the second support shaft so as to draw a swing trajectory that bypasses the outside of the second support shaft, and the second attachment body bypasses the outside of the first support shaft. The hinge is characterized in that it protrudes toward the first spindle so as to draw a swing locus.
And by doing in this way, it becomes the arrangement | positioning which the 1st, 2nd attachment body overlapped in the spindle axis direction, and the arrangement space of the 1st, 2nd attachment body can be halved, and the size is reduced accordingly. It can be made compact.
In this configuration, the first and second support shafts can be characterized by being integrated via a bracket, whereby a biaxial hinge can be handled as an integral object.
In these, at least one of the first and second attachment bodies is provided with an attachment portion for attaching a lock member for locking in the open posture when the corresponding swinging body is opened. In this case, there is an advantage that the hinge can also be used as an attachment member for the lock member.
In these components, the first and second swinging members are first and second covers provided on the hydraulic excavator, and are hinges characterized in that.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a small hydraulic excavator. The hydraulic excavator 1 includes a crawler-type lower traveling body 2 and an upper revolving body 3 that is pivotably provided on the lower traveling body 2. The traveling body 2 is provided with a dozer 4, and the upper swing body 3 is provided with a boom type bucket 5. Furthermore, a cabin-type operation control unit 5 is provided on one side (left side) of the upper swing body 3, and on the other side (right side), a tank chamber 6 in which a tank such as a fuel tank is disposed, and various types of radiators and the like. A machine room 7 in which a mechanical device is arranged is formed adjacent to the front and rear, and the adjacent tank room 6 and machine room 7 are connected via first and second covers (bonnets) 8 and 9. Each of them is covered so that it can be freely opened and closed, and the present invention is applied to this pivot shaft support, which will be described in detail below.
[0006]
Each swing support of the first and second covers 8 and 9 is performed through a biaxial hinge 10 provided with first and second support shafts 11 and 12. It is configured as follows. The first and second support shafts 11 and 12 are arranged in parallel in the front-rear direction in a state where the axial length is in the left-right direction and the first support shaft 11 that supports the first cover 8 is located on the rear side. The left and right end portions of the support shafts 11 and 12 are integrally connected via brackets 13 and 14, and the brackets 13 and 14 are fixed to the housing side through appropriate fixing means such as bolts-nuts or welding. In this embodiment, the hinge 10 is fixed by a bolt-nut.
[0007]
A base end portion 15a of a first attachment body 15 for attaching a first cover 8 for covering the tank chamber 6 arranged on the front side is pivotally supported on the first support shaft 11 arranged on the rear side so as to be swingable. However, the first attachment body 15 further includes a first intermediate portion 15b extending downward from the base end portion 15a and a front second support shaft 12 side from the first intermediate portion 15b. The second intermediate portion 15c that is bent, the third intermediate portion 15d that is bent upward from the second intermediate portion 15c, and the front end edge (upper edge) of the third intermediate portion 15d are bent forward. The left and right side edges of the first to third intermediate portions 15b, 15c, and 15d are between the brackets 13 and 14, and are formed with an attachment portion 15e for attaching the rear end portion of the first cover 8. It is narrow so that there is a gap.
[0008]
On the other hand, on the second spindle 12 arranged on the front side, the base end portion 16a of the second attachment body 16 for attaching the second cover 9 covering the machine chamber 7 arranged on the rear side is pivotably pivoted. Although supported, the second mounting body 16 further includes a first intermediate portion 16b extending downward from the base end portion 16a, and a rear first support shaft 11 side from the first intermediate portion 16b. A second intermediate portion 16c that is bent inward, a third intermediate portion 16d that is bent upward from the second intermediate portion 16c, and a rearward end from the leading edge (upper edge) of the third intermediate portion 16d. The first to third intermediate portions 16b, 16c, and 16d are formed between the first attachment body 15 and the brackets 13 and 14, respectively. It is divided into left and right so as to be arranged in the gap between the first, by doing this, Second attachment member 15, 16 has a discrepancy like arrangement so as not to interfere with each other.
[0009]
The first and second mounting bodies 15 and 16 have the following dimension settings. Since the first and second mounting bodies 15 and 16 have the same settings, the first and second mounting bodies 15 and 16 have the following settings. The dimension setting of the mounting body 15 will be described, and the dimension setting of the second mounting body 16 will be omitted. The first attachment body 15 is formed in an arm shape by bending the first to third intermediate portions 15b, 15c, and 15d into a substantially U-shaped shape in a side view. The length A of the first support shaft 11 from the shaft core 11a is longer than the distance B from the shaft core 11a of the first support shaft 11 to the farthest position of the second attachment base end portion 16a (A> B). Is set. The second and third intermediate portions 15c and 15d are set so as to be located outside the arc C drawn by the farthest position of the second attachment base end portion 16a with the first spindle shaft core 11a as the center. As a result, the first mounting body 15 draws a swinging locus that bypasses the outside of the second support shaft 12, and lifts the first cover 8 to the closed position covering the tank chamber 6 and the rear upper side to lift the tank. The chamber 6 can be swung to an open posture to open the chamber 6. Similarly, the second mounting body 16 draws a swinging locus that bypasses the outside of the first support shaft 11, and lifts the second cover 9 in the closed position covering the machine room 7 and in the front upper direction. The machine room 7 can be swung to an open posture.
Incidentally, in the present embodiment, as shown in FIGS. 4 and 7, the base end portion of the lock rod 19 is pivotally supported by the third intermediate portion 16 d of the second attachment body 16, The distal end of the lock rod 19 is engaged with a lock member 19a provided on the main body side so that a lock hole 19b can be freely moved. In conjunction with the opening of the second cover 9, the lock rod 19 swings while its tip is guided by the lock hole 19b, and when the second cover 9 is in the open position, The front end of the collar 19 is fitted into and engaged with a lock groove 19c formed in a bent shape at the end of the lock hole 19b, thereby locking the second cover 9 in an open position. And by doing in this way, the hinge is used also as a fixture of a lock member.
[0010]
In the structure constructed as described, the first and second covers 8 and 9 are attached via arm-type first and second attachment bodies 15 and 16, respectively. In this case, in the closed position, the opposed edges of the first and second covers 8 and 9 can be brought close to each other, but when the cover is opened, the closed cover is closed. The posture can overlap the upper side of the body.
[0011]
In this case, the first and second mounting bodies 15 and 16 are arranged so that the intermediate portions are arranged in a hook shape in the axial direction so that they do not interfere with each other. The second attachment body 16 is formed to project toward the second support shaft 12 so as to draw a swing locus detouring outside the outer side of the first support shaft 12, and the second attachment body 16 is drawn so as to draw a swing locus detouring outside the first support shaft 11. As a result of projecting toward the one support shaft 11 side, the arm-type first and second attachment bodies 15 and 16 are arranged so as to overlap each other in a side view. It is not necessary to secure the space for disposing the bodies 15 and 16 separately, and space can be saved accordingly.
[0012]
The present invention is not limited to the above-described embodiment, and the first and second attachment bodies are arranged in a bowl shape that does not interfere with each other. There are arrangements such as a lateral arrangement and an intermediate part formed in a comb-like shape in a bowl shape. Further, as shown in the second embodiment of FIG. 8, the first and second attachment bodies 17 and 18 may be formed with arc-shaped intermediate portions 17a and 18a. When the second mounting bodies 17 and 18 are swung, they are projected toward the other support shafts 12 and 11 so as to draw swing trajectories that detour outside the second and first support shafts 12 and 11, respectively. It is good also as composition to do.
[Brief description of the drawings]
FIG. 1 is a side view of a hydraulic excavator.
FIG. 2 is a side view showing a state in which the first and second covers are closed.
FIG. 3 is a side view showing a state in which a first cover is opened.
FIG. 4 is a side view showing a state in which a second cover is opened.
5 (X) is a front view of a hinge, and (Y) is a plan view of the hinge. FIG.
FIG. 6 is a side view of the hinge.
FIG. 7 is a perspective view of an essential part showing a state where a hinge is attached to a hydraulic excavator (a cover is omitted).
FIG. 8 is a side view showing a second embodiment of the hinge.
FIG. 9 is a side view of a conventional hinge.
[Explanation of symbols]
8, 9 1st, 2nd cover 10 Hinge 11, 12 1st, 2nd spindle 15, 16 1st, 2nd attachment body

Claims (4)

When attaching the first and second swinging members via the first and second mounting bodies pivotally supported by the first and second support shafts arranged in parallel and in close proximity, The first and second attachment bodies are arranged in a hook shape in the direction of the spindle axis so as not to interfere with each other, and the first attachment body draws a swing locus that bypasses the outside of the second spindle. The hinge is characterized in that it is formed to protrude toward the side, and the second attachment body is formed to protrude toward the first support shaft so as to draw a swing locus detouring around the outside of the first support shaft. 2. The hinge according to claim 1, wherein the first and second support shafts are integrated via a bracket. In Claim 1, 2, or 3, at least one of the first and second attachment bodies is formed with an attachment portion for attaching a lock member for locking to the open posture when the corresponding swinging body is opened. A hinge characterized by that. 4. The hinge according to claim 1, wherein the first and second swinging members are first and second covers provided on the hydraulic excavator.

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