JP2018053928A - Hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge capable of materializing a push-open function or a push-close function, with a simple structure with a small number of components.SOLUTION: A hinge 4 is equipped with a case member 5; a shaft member 6 rotatably supported by the case member 5, a torsion spring 8 arranged on the case member 5 and energizing the shaft member 6 to one rotating direction with regard to the case member 5. On an outer peripheral surface of the shaft member 6, a heart cam groove 61 is formed, and on the case member 5, a pin 9b projecting out toward the shaft member 6 and inserted in the heart cam groove 61 is disposed so as to move in an axial direction of the shaft member 6. When the case member 5 and the shaft member 6 relatively rotate, the pin 9b is guided along the heart cam groove 61.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a hinge that rotatably connects two objects to be connected.

  Conventionally, for example, when a lid member of a storage device is connected to a main body portion so as to be openable and closable, the lid member and the main body portion are connected by a hinge. In addition, in order to enable the lid member to be pushed open or closed with respect to the main body portion, a heart cam mechanism may be used for the lock portion of the lid member (see, for example, Patent Document 1).

  When the heart cam mechanism is used for the lock part of the lid member in order to realize the push-open function or push-close function as in the above prior art, the number of parts of the lock part increases and the structure of the storage device becomes complicated. There was a problem that man-hours increased.

JP 7-309173 A

  An object of the present invention is to provide a hinge that can realize a push-open function or a push-close function with a simple configuration with a small number of parts.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, the case member fixed to the first connection object, the shaft member fixed to the second connection object and supported rotatably in the case member, and the case member A hinge comprising: a torsion spring that is disposed and has the shaft member inserted therein and urges the shaft member in one rotational direction with respect to the case member. A heart cam groove is formed, and the case member projects toward the shaft member, and a pin inserted into the heart cam groove is arranged to be movable in the axial direction of the shaft member, and the case member and the shaft member When the two are relatively rotated, the pin is guided along the heart cam groove.

  According to a second aspect of the present invention, the end of the bent bar-shaped member is inserted into the case member so that the bar-shaped member can swing relative to the case member. It is formed at the other end of the member.

  According to a third aspect of the present invention, a cylindrical member is inserted into the case member, and the cylindrical member is movable in the axial direction of the axial member by the shaft member being inserted into the cylindrical member. The pin is formed to protrude in the direction of the shaft member from the inner peripheral surface of the cylindrical member.

The perspective view which shows a door body. (A) is a perspective view which shows operation which closes the door of a door body, (b) is a perspective view which shows a door body in a closed state. The perspective view which shows the hinge which concerns on 1st embodiment. (A) is a rear view which similarly shows a hinge, (b) is a rear view which similarly shows the internal structure of a hinge. 4A is a sectional view taken along line XX in FIG. 4A when the door is closed, and FIG. 4B is a sectional view taken along line XX in FIG. 4A when the door is opened. Figure. The figure which shows the shape of a cam groove. The perspective view which shows the hinge which concerns on 2nd embodiment. (A) is a rear view which similarly shows a hinge, (b) is a rear view which similarly shows the internal structure of a hinge. 8A is a cross-sectional view taken along line YY in FIG. 8A when the door is closed, and FIG. 8B is a cross-section taken along line YY in FIG. 8A when the door is open. Figure.

First, the door body 1 will be briefly described with reference to FIGS. 1 and 2.
FIG. 1 is a view showing a doored body 1. In each figure in this specification, the front-rear direction, the left-right direction, and the up-down direction of the door body 1 and the hinge 4 are indicated by arrows. Moreover, the arrow R in FIG. 1 represents the rotation direction of the door 3 that constitutes the doored body 1.

  The door body 1 includes a main body 2, a door 3, and a hinge 4 that connects the main body 2 and the door 3. The main body 2 is a resin-formed component in which an opening hole is formed, and the door 3 is a resin-formed component formed so as to cover the open hole in the main body 2. In this embodiment, the door 3 is a first connection object in the present invention, and the main body 2 is a second connection object in the present invention. The main body 2 and the door 3 are rotatably connected by a hinge 4. In addition, the hinge 4 which concerns on this invention is applicable also to all the door bodies other than the door body 1 demonstrated below in this embodiment.

  When the user closes the door 3 in the door body 1, the door 3 is pressed down as shown by an arrow Rd in FIG. 2A and is pushed down until the door 3 stops. Thereby, the door 3 is maintained in a state in which the opening hole of the main body 2 is closed, and the door body 1 is in the “closed state” as shown in FIG. On the other hand, when the user opens the door 3 in the door body 1, the door 3 in the closed state is pressed and pressed down until the door 3 stops. Thereby, the door 3 rotates in the direction away from the opening hole of the main body 2, and the door body 1 is in the “open state”.

Next, the structure of the hinge 4 according to the first embodiment of the present invention will be described with reference to FIGS.
The hinge 4 connects two connection objects so as to be rotatable. The hinge 4 includes a case member 5, a shaft member 6, a torsion spring 8, and a rod-like member 9 as main components.

  The case member 5 is fixed to the door 3 which is the first connection object in the present invention. The case member 5 includes a case main body 51 and a support plate 52. The case main body 51 is formed as a housing that is open on the upper and right sides. By attaching the support plate 52 to the right side surface of the case main body 51, the case member 5 is formed in a rectangular tube shape that opens upward.

  Fixing holes 51 a and 51 a are formed on the right side of the front surface and the rear surface of the case body 51. The support plate 52 is formed with engagement protrusions 52a and 52a protruding from the left surface toward the case main body 51, and an engagement portion 52b protruding outward is formed at the tip of each engagement protrusion 52a. . The support plate 52 is assembled to the case body 51 by engaging the engagement portions 52b and 52b of the engagement protrusions 52a and 52a with the fixing holes 51a and 51a from the inside of the case body 51.

A fixing portion 51 b that protrudes downward is formed on the lower surface of the case body 51. The case member 5 is fixed to the door 3 by inserting the fixing portion 51 b into a fixing hole formed in the fixing plate 3 a (see FIG. 5) of the door 3.
From the left of the rear surface of the case body 51, a pin insertion hole 51c and a fixed-side insertion hole 51d for disposing a rod-shaped member 9 described later are opened.

  An insertion hole for inserting the shaft member 6 is opened in the left side surface of the case main body 51 and the support plate 52. When the shaft member 6 is inserted into the insertion hole, the shaft member 6 extends into the case member 5 with left and right end portions (a fixed end portion 6a and a free end portion 6c described later) extending from the case member 5. It is supported so as to be rotatable.

  The shaft member 6 is fixed to the main body 2 which is the second connection object in the present invention. Specifically, a fixed end 6 a is formed at the left end of the shaft member 6, and the shaft member 6 is fixed to the main body 2 by inserting the fixed end 6 a into a fixing hole (not shown) in the main body 2. The A planar locking surface 6 b is formed at a portion of the shaft member 6 disposed inside the case member 5. Further, a free end portion 6c in which a washer 74, a nut 75, and the like are disposed is formed at the right end of the shaft member 6. In contrast to this embodiment, the case member 5 may be fixed to the main body 2 of the doored body 1 and the shaft member 6 may be fixed to the door 3.

  As shown in FIGS. 3, 4 (a) and 4 (b), the free end portion 6 c of the shaft member 6 includes a shaft side rotation restricting member 71, a case side rotation restricting member 72, a leaf spring 73, a washer 74, And the nut 75 is arrange | positioned. The shaft side rotation restricting member 71 is provided so as not to rotate relative to the shaft member 6. Further, the case-side rotation restricting member 72 is not rotatable relative to the case member 5 by inserting the protrusion 72 a into the support plate 52. Accordingly, when the shaft member 6 and the case member 5 are relatively rotated, the shaft-side rotation restricting member 71 and the case-side turn restricting member 72 are relatively rotated. Then, the restricting projection formed on the shaft-side rotation restricting member 71 and the restricting portion formed on the case-side turn restricting member 72 come into contact with each other, so that the turning range of the shaft member 6 and the case member 5 is restricted. Is done. The leaf spring 73 biases the shaft side rotation restricting member 71 and the case side rotation restricting member 72 in the axial direction. The leaf spring 73 is fixed to the free end portion 6 c of the shaft member 6 by a nut 75 via a washer 74.

  The torsion spring 8 is accommodated in the case member 5, and the central portion of the shaft member 6 is inserted through the torsion spring 8. The torsion spring 8 includes both end portions of a shaft side contact end portion 8a and a case side contact end portion 8b. The shaft-side abutting end 8 a is locked to the locking surface 6 b of the shaft member 6 and is not allowed to rotate relative to the shaft member 6. The case-side contact end portion 8 b is inserted into an insertion portion formed in the case main body 51 of the case member 5, and is not rotatable relative to the case member 5. The torsion spring 8 in the present embodiment applies a biasing force to the shaft member 6 in a direction in which the case member 5 rotates counterclockwise as viewed from the left side. That is, the torsion spring 8 always urges the door 3 in the direction of opening from the main body 2 via the shaft member 6 and the case member 5.

  As shown in FIGS. 4B and 5, a heart cam groove 61 having a predetermined shape is formed in the middle portion of the outer peripheral surface of the shaft member 6. The heart cam groove 61 is formed along the circumferential direction of the shaft member 6 as shown in FIG.

  As shown in FIG. 4, a pin 9 b that protrudes toward the shaft member 6 is arranged on the case member 5 so as to be movable in the axial direction (left-right direction) of the shaft member 6. Specifically, a fixed-side insertion hole 51d is opened on the rear side surface of the case member 5, and a pin insertion hole that is an arc-shaped long hole with the fixed-side insertion hole 51d as the center above the fixed-side insertion hole 51d. 51c is opened. Then, as shown in FIGS. 5 (a) and 5 (b), the fixed side end 9a, which is one end of the rod-like member 9 bent in a substantially U shape in the left side view, is inserted into the fixed side insertion hole 51d, The pin 9b which is the other end of the rod-shaped member 9 is inserted into the pin insertion hole 51c. As a result, as shown by the arrow S1 in FIGS. 3 and 4A and 4B, the pin 9b of the rod-shaped member 9 can swing relative to the case member 5 around the fixed-side end portion 9a. is there. The tip of the pin 9b is inserted into the heart cam groove 61 as shown in FIGS. 5 (a) and 5 (b). As a result, when the case member 5 and the shaft member 6 are relatively rotated, the pin 9b is guided along the heart cam groove 61, and the rod-like member 9 swings around the fixed-side end portion 9a.

Next, the opening / closing operation of the door 3 with respect to the main body 2 will be described with reference to FIGS. 5 and 6.
First, when the door 3 is in the closed state (the state shown in FIG. 5A and the “closed state” of the door 1), the pin 9b of the rod-like member 9 is in the closed position in the heart cam groove 61 in FIG. It is located at the chain line position A1. At this time, the case member 5 and the door 3 are biased to the open side (counterclockwise in FIG. 5A) by the torsion spring 8, but the heart cam groove 61 is not formed in the pin 9b at the chain line position A1. Since the case member 5 is locked, the case member 5 does not move to the open side and the door 3 does not open. That is, the door 3 is kept closed with respect to the main body 2.

  When the user presses the door 3 when the door body 1 is in the closed state and pushes it down until the door 3 stops, the rod-shaped member 9 swings, and the pin 9b of the rod-shaped member 9 is indicated by the arrow P1 in FIG. In this way, the heart cam groove 61 moves to the chain line position A2. In this state, when the user reduces the pressing force (releases the hand from the door 3), the pin 9b of the rod-like member 9 is urged toward the open side of the torsion spring 8 as shown by arrows P2 and P3 in FIG. Then, it moves to a chain line position A3 that is an open position in the heart cam groove 61. Thereby, since the case member 5 moves to the open side, the door 3 is in an open state with respect to the main body 2 (the state shown in FIG. 5B and the “open state” of the door body 1). .

  Further, when the user presses the door 3 when the door 1 is in the open state and pushes down until the door 3 stops, the rod-like member 9 swings, and the pin 9b of the rod-like member 9 is moved to the arrow in FIG. It moves to the chain line position A4 in the heart cam groove 61 like P4. In this state, when the user reduces the pressing force (releases the hand from the door 3), the pin 9b of the rod-like member 9 is urged toward the open side of the torsion spring 8 as shown by the arrow P5 in FIG. It moves to the chain line position A1, which is the closed position in the groove 61. As a result, the pin 9b is locked to the portion where the heart cam groove 61 is not formed at the chain line position A1, so that the door 3 is closed with respect to the main body 2.

  In the present embodiment, the pin 9b is configured to move only in one direction (counterclockwise direction in FIG. 6) due to the shape of the heart cam groove 61. However, a step is formed in the depth direction of the heart cam groove 61. By forming the pin 9b, the pin 9b can be configured not to reverse.

  As described above, according to the hinge 4 according to the present embodiment, the heart cam groove 61 is formed on the outer peripheral surface of the shaft member 6, and the case member 5 protrudes toward the shaft member 6 and is inserted into the heart cam groove 61. The pin 9b is arranged to be movable in the axial direction of the shaft member 6, and the pin 9b is guided along the heart cam groove 61 when the case member 5 and the shaft member 6 are relatively rotated. Thus, by forming the heart cam groove 61 in the shaft member 6, the lock mechanism can be concentrated on the hinge 4, so that the hinge 4 using the push-open function or push-close function has a simple configuration with a small number of parts. Can be realized.

  Further, according to the hinge 4 according to the present embodiment, the fixed member 9 a of the bent rod-shaped member 9 is inserted into the case member 5, so that the rod-shaped member 9 can swing with respect to the case member 5. The pin 9 b is formed at the other end of the rod-shaped member 9. The pin 9b inserted into the heart cam groove 61 is movable in the axial direction of the shaft member 6 by the rod-shaped member 9 swinging around the fixed side end portion 9a. Thereby, even when the heart cam groove 61 is formed in the shaft member 6, the pin 9 b can be guided along the heart cam groove 61 with a simple configuration.

  Next, the structure of the hinge 104 according to the second embodiment of the present invention will be described with reference to FIGS. Since the configuration of the hinge 104 according to the present embodiment has many parts in common with the hinge 4 according to the first embodiment, the common components are denoted by the same reference numerals, description thereof is omitted, and different parts are mainly described. To do.

  As shown in FIGS. 7 and 8, the hinge 104 according to the present embodiment includes a case member 5, a shaft member 6, a torsion spring 8, and a cylindrical member 19 made of resin as main components. Then, the cylindrical member 19 is inserted into the case member 5 and the shaft member 6 is inserted into the cylindrical member 19, so that as shown by the arrow S2 in FIG. 7 and FIGS. The cylindrical member 19 is disposed so as to be movable in the axial direction of the shaft member 6.

  A notch is formed in the rear surface of the cylindrical member 19, and a protruding piece 19a extends toward the notch. And the pin 19b which protrudes toward the direction of the shaft member 6 is formed in the front-end | tip part of the protrusion piece 19a. That is, the pin 19 b in this embodiment is formed so as to protrude from the inner peripheral surface of the cylindrical member 19 in the direction of the shaft member 6.

  When the cylindrical member 19 moves in the axial direction of the shaft member 6, the pin 19b similarly moves as shown by an arrow S2 in FIGS. 7 and 8A and 8B. The tip of the pin 19b is inserted into the heart cam groove 61 as shown in FIGS. 9 (a) and 9 (b). Accordingly, when the case member 5 and the shaft member 6 are relatively rotated, the pin 19 b is guided along the heart cam groove 61, and the cylindrical member 19 moves in the axial direction of the shaft member 6.

  As described above, according to the hinge 104 according to the present embodiment, the heart cam groove 61 is formed on the outer peripheral surface of the shaft member 6, and the case member 5 protrudes toward the shaft member 6 and is inserted into the heart cam groove 61. The pin 19b is arranged so as to be movable in the axial direction of the shaft member 6, and the pin 19b is guided along the heart cam groove 61 when the case member 5 and the shaft member 6 rotate relatively. Thus, by forming the heart cam groove 61 in the shaft member 6, the lock mechanism can be concentrated on the hinge 4, so that the hinge 4 using the push-open function or push-close function has a simple configuration with a small number of parts. Can be realized.

  Further, according to the hinge 104 according to the present embodiment, the cylindrical member 19 is inserted into the case member 5, and the shaft member 6 is inserted through the cylindrical member 19, whereby the cylindrical member 19 is connected to the case member 5. Is arranged so as to be movable. The pin 19 b is formed so as to protrude from the inner peripheral surface of the cylindrical member 19 in the direction of the shaft member 6. Thus, the cylindrical member 19 moves in the axial direction, so that the pin 19b inserted into the heart cam groove 61 can move in the axial direction of the shaft member 6. Thereby, even when the heart cam groove 61 is formed in the shaft member 6, the pin 19 b can be guided along the heart cam groove 61 with a simple configuration.

DESCRIPTION OF SYMBOLS 1 Door body 2 Main body 3 Door 4 Hinge 5 Case member 6 Shaft member 8 Torsion spring 9 Bar-shaped member 61 Heart cam groove

Claims (3)

A case member fixed to the first connection object;
A shaft member fixed to the second connection object and rotatably supported in the case member;
In a hinge comprising: a torsion spring disposed in the case member and having the shaft member inserted therein and urging the shaft member in one rotational direction with respect to the case member;
A heart cam groove is formed on the outer peripheral surface of the shaft member,
In the case member, a pin that protrudes toward the shaft member and is inserted into the heart cam groove is arranged to be movable in the axial direction of the shaft member,
The hinge is characterized in that the pin is guided along the heart cam groove when the case member and the shaft member rotate relatively. In the case member, the one end of the bent rod-shaped member is inserted, so that the rod-shaped member is slidable with respect to the case member,
The hinge according to claim 1, wherein the pin is formed at the other end of the rod-shaped member. A cylindrical member is inserted into the case member,
When the shaft member is inserted into the cylindrical member, the cylindrical member is arranged to be movable in the axial direction of the shaft member,
The hinge according to claim 1, wherein the pin is formed so as to protrude from an inner peripheral surface of the cylindrical member toward the shaft member.

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