Restriction device

Abstract

To provide a restriction device that can restrict an operation lever from moving to a discharge position as well as, in the case that the operation lever is unintentionally positioned at the discharge position, allow the operation lever to easily move to a non-discharge position.SOLUTION: A restriction device 10 comprises a rotary member 30. The rotary member 30 has a restriction part 33 that is rotatable so as to allow an operation lever 102 to be positioned at a restricted position where the operation lever 102 is restricted from moving to a discharge position and at a non-restricted position where the operation lever 102 is not restricted from moving to the discharge position. The restriction part 33 has a first portion 40 which is formed at the other end part on the other side in a first direction of the restricting part 33 in a state where the restricting part 33 is positioned at the restricted position. The first portion 40 is formed so as to be positioned, in a state where the restricting part 33 is positioned at the restricted position, on one side in the first direction as proceeding toward the other side in a third direction, and be positioned from one side to the other side in the third direction with respect to one end part 105 on one side in the first direction of the operation lever 102.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a limiting device for limiting the movement of an operating lever for operating devices provided on various industrial vehicles. [Background technology]

[0002] Conventionally, there is known a limiting device for limiting the movement of an operating lever for operating a rotating drum of a mixer truck. For example, Patent Document 1 discloses a lever locking device for locking an operating lever for operating a rotating drum of a mixer truck. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3182706 Summary of the Invention [Problem to be solved by the invention]

[0004] However, it is desirable to be able to restrict the movement of the operating lever to the ejection position, and also to be able to easily move the operating lever to a non-ejection position if the operating lever is unintentionally positioned in the ejection position.

[0005] Therefore, an object of the present invention is to provide a limiting device that can limit the movement of the operating lever to the ejection position, and can easily move the operating lever to a non-ejection position if the operating lever is unintentionally positioned in the ejection position. [Means for solving the problem]

[0006] (1) A limiting device according to the present invention is provided on a vehicle and comprises a device body having an opening formed on its outer surface as a long groove extending in a predetermined direction, an operating lever that is movably attached to the device body while being guided by the opening and drives a drive unit mounted on the vehicle, and a rotating member rotatably attached to the device body, wherein the rotating member has a limiting portion that is capable of limiting movement of the operating lever in one direction along a long side of the opening when the operating lever is located on one side of the rotating member, and a limiting portion that is provided at a corner located opposite the limiting portion and that is capable of limiting movement of the operating lever in one direction along a long side of the opening when the operating lever is located on the other side of the rotating member. and a forced release section that can push up the rotating member from a corner of the rotating member to forcibly release it by moving the operating lever in a direction opposite to the one direction, and is supported rotatably around a rotation axis parallel to the long side of the opening and is configured to be rotatable between an unrestricted position of the operating lever that opens the opening, a restricted position that closes a specified part of the opening and locks the operating lever in the restricted position, and a forced release position in which the operating lever comes into contact with the forced release section and pushes up the rotating member between the unrestricted position and the restricted position to forcibly release it.

[0007] (2) From another viewpoint, the limiting device according to the present invention is a limiting device attached to a mixer vehicle, the mixer vehicle includes a rotating drum, an operating lever for operating the rotating drum, and an opening member having an opening through which the operating lever is inserted and extending in a first direction, the operating lever is movable in the first direction between a discharge position in which the rotating drum rotates in the discharge direction when the operating lever is positioned, and a non-discharge position which is located to one side of the discharge position in the first direction and in which the rotating drum does not rotate in the discharge direction when the operating lever is positioned, the limiting device includes a support member attached to the mixer vehicle and a rotating member rotatably supported by the support member, and when a direction in which the opening is open is defined as a second direction and a direction perpendicular to the first direction and perpendicular to the second direction is defined as a third direction, the support member is attached to the mixer vehicle such that a rotation axis of the rotating member extends in the first direction and is located to one side of the operating lever in the third direction, and the rotating member is configured such that the support member is movable in the first direction between the discharge position and the non-discharge position. The present invention may also be characterized in that, when attached to the vehicle, the limiting portion is located at a limiting position that is located on the other side of the operating lever in the first direction and limits the movement of the operating lever to the discharge position when the operating lever is in the non-discharge position, and a non-restricting position that is not located on the other side of the operating lever in the first direction and does not limit the movement of the operating lever to the discharge position when the operating lever is in the non-discharge position, and the limiting portion has a first portion formed at the other end of the limiting portion on the other side of the first direction when the support member is attached to the mixer vehicle and the limiting portion is located at the limiting position, and the first portion is formed so as to be located on one side of the first direction as it moves toward the other side of the third direction when the support member is attached to the mixer vehicle and the limiting portion is located at the limiting position, and is formed so as to be located from one side to the other side in the third direction beyond one end of the operating lever on one side of the first direction.

[0008] (3) In the restriction device of (2) above, it is preferable that the first portion is formed in a convexly curved shape or a curved portion shape.

[0009] (4) In the limiting device of (2) above, it is preferable that the limiting portion has a second portion and a third portion formed at one end of the limiting portion on one side of the first direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position, and the second portion is formed so as to extend along the third direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position, and is formed so as to be located from one side to the other side in the third direction further than the other end of the operating lever on the other side in the first direction, and the third portion is formed so as to be located on the other side of the first direction as it moves toward the other side in the third direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position, and is formed so as to be located from the other end of the second portion on the other side in the third direction to the other end of the limiting portion on the other side in the third direction.

[0010] (5) In the limiting device of (2) above, it is preferable that the limiting portion has a fourth portion formed so as to be positioned at a distance from the opening in the second direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position, and the rotating member has a protruding portion connected to one end of the fourth portion on one side in the third direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position, and the protruding portion is formed so as to protrude toward the opening member in the second direction more than the fourth portion and to contact the opening member when the support member is attached to the mixer truck and the limiting portion is located at the limiting position.

[0011] (6) In the limiting device of (2) above, the limiting portion has a fourth portion formed so as to be positioned at a distance from the opening in the second direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position, and a fifth portion connected to the other end of the fourth portion on the other side of the third direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position, and it is preferable that the fifth portion is formed so as to be positioned toward the opening member in the second direction as it moves toward the other side of the third direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position.

[0012] (7) In the limiting device of (5) above, it is preferable that the rotating member has a magnet provided on the protruding portion so as to be attracted to the opening member when the support member is attached to the mixer truck and the limiting portion is positioned at the limiting position.

[0013] (8) In the limiting device of (5) or (6) above, it is preferable that the rotating member has a magnet provided in the fourth portion so as to be attracted to the mixer vehicle when the support member is attached to the mixer vehicle and the limiting portion is positioned in the non-limiting position. Effect of the Invention

[0014] According to the present invention, a limiting device can be provided that can limit the movement of the operating lever to the ejection position, and can also easily move the operating lever to a non-ejection position if the operating lever is unintentionally positioned in the ejection position. [Brief description of the drawings]

[0015] [Figure 1] 1 is a schematic diagram showing a restriction device according to an embodiment of the present invention in a folded state; [Diagram 2] FIG. 2 is a schematic diagram showing the restriction device of FIG. 1 in an expanded state. [Diagram 3] FIG. 2 is a schematic diagram showing a mixer truck to which the limiting device of FIG. 1 is attached. [Figure 4] 1 in a state where the limiting device is in a limiting position and the operating lever is in a non-ejecting position. FIG. [Diagram 5] 2 is a side view showing a state in which the restriction device of FIG. 1 is located at a restriction position and the operating lever is located at a non-ejection position. [Figure 6] 1 in a non-restrictive position and the operating lever in a discharge position. FIG. [Figure 7] 2 is a side view showing a state in which the restriction device of FIG. 1 is in a non-restrictive position and the operating lever is in a discharge position. [Figure 8] 2 is a front view showing a state in which the limiting device of FIG. 1 is located at a limiting position and the operating lever is located at a discharge position. [Figure 9] 2 is a side view showing a state in which the limiting device of FIG. 1 is located at a limiting position and the operating lever is located at a discharge position. [Figure 10] 2 is a front view showing a state in which the limiting device of FIG. 1 is pushed up by an operating lever. [Figure 11] 2 is a side view showing a state in which the limiting device of FIG. 1 is pushed up by an operating lever. [Figure 12] 1 in a state where the limiting device is in a limiting position and the operating lever is in a non-ejecting position. FIG. [Figure 13] 2 is a side view showing a state in which the restriction device of FIG. 1 is located at a restriction position and the operating lever is located at a non-ejection position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, a restriction device 10 according to an embodiment of the present invention will be described with reference to the drawings.

[0017] FIG. 1 is a schematic diagram showing a state in which a restriction device 10 according to an embodiment of the present invention is folded. FIG. 1(a) is a front view, FIG. 1(b) is a left side view, and FIG. 1(c) is a right side view. FIG. 2 is a schematic diagram showing a state in which the restriction device 10 of FIG. 1 is unfolded. FIG. 2(a) is a front view, FIG. 2(b) is a left side view, and FIG. 2(c) is a right side view. Here, the folded state of the restriction device 10 refers to a state in which the wing portion 21 and the wing portion 31 face each other in parallel, and the unfolded state of the restriction device 10 refers to a state in which the angle between the wing portion 21 and the wing portion 31 is 180 degrees. First, the configuration of the restriction device 10 will be described with reference to FIG. 1 and FIG. 2.

[0018] The limiting device 10 has a box-shaped device body (not shown) with an opening 104, and is a device for limiting the movement of an operating lever 102 (see FIG. 3, etc.) guided by the opening 104. As shown in FIGS. 1 and 2, the limiting device 10 includes a support member 20 and a rotating member 30.

[0019] The support member 20 is a member attached to the upper part of the opening 104 (see FIG. 3, etc.) of a long groove provided on the outer surface of the mixer vehicle 100 (see FIG. 3). The support member 20 rotatably supports the rotating member 30. Although details will be described later, when the direction in which the opening 104 extends is defined as a first direction, the direction in which the opening 104 is open is defined as a second direction, and the direction perpendicular to the first direction and perpendicular to the second direction is defined as a third direction, the support member 20 is attached to the mixer vehicle 100 so that the rotation axis A (see FIG. 5) of the rotating member 30 extends in the first direction and is located on one side of the operating lever 102 in the third direction. The support member 20 has a wing portion 21, a plurality of tube portions 22, and a shaft portion 23.

[0020] Wing portion 21 is provided such that its long side extends in the fourth direction (X2 axis direction). Wing portion 21 is a plate body whose thickness direction is in the fifth direction (Y2 axis direction) perpendicular to the fourth direction. Wing portion 21 has a substantially rectangular shape when viewed from the fifth direction. Wing portion 21 has through hole 24 and through hole 25.

[0021] Through hole 24 penetrates wing portion 21 in the fifth direction. Through hole 24 is an elongated hole extending in the fourth direction. Through hole 25 is located on one side of through hole 24 in the first direction. Through hole 25 penetrates wing portion 21 in the fifth direction.

[0022] The multiple tubes 22 are arranged at intervals in the fourth direction. Each of the multiple tubes 22 is connected to one end of one side of the wing 21 in a sixth direction (Z2 axis direction) that is perpendicular to the fourth direction and perpendicular to the fifth direction. Each of the multiple tubes 22 is a substantially cylindrical body with the fourth direction as its axial direction. Each of the multiple tubes 22 is formed to protrude toward the wing 31 side in the fifth direction beyond the wing 21 when the restriction device 10 is in a folded state.

[0023] The shaft portion 23 extends in the fourth direction. The shaft portion 23 is a shaft body whose axial direction is the fourth direction. The shaft portion 23 is inserted through the multiple pipe portions 22 and the multiple pipe portions 32. The support member 20 supports the rotating member 30 rotatably around the rotation axis A, with the central axis of the shaft portion 23 being the rotation axis A. In other words, the rotation axis A extends along the fourth direction.

[0024] The rotating member 30 is rotatably supported by the support member 20. As described above, the rotating member 30 is supported rotatably about the rotation axis A. The rotating member 30 has a wing portion 31, a plurality of tube portions 32, a limiting portion 33, an attachment portion 34, a plurality of screws 35, a protruding portion 36, a plurality of magnets 37, and a magnet 38.

[0025] When restriction device 10 is folded, wing portion 31 is positioned at a distance from wing portion 21 in the fifth direction. When restriction device 10 is folded, wing portion 31 is a plate body that extends in the fourth direction and has a thickness direction in the fifth direction, and is substantially rectangular when viewed from the fifth direction. When restriction device 10 is unfolded, wing portion 31 is aligned with wing portion 21 at a distance in the sixth direction. Wing portion 31 has a plurality of through holes 39.

[0026] The multiple through holes 39 are aligned in the sixth direction when the restriction device 10 is folded. Each of the multiple through holes 39 is located on the other side of the center of the wing portion 31 in the fourth direction. Each of the multiple through holes 39 is tapered partway so that the diameter decreases toward the wing portion 21 in the fifth direction when the restriction device 10 is folded, and penetrates the wing portion 31 in the fifth direction.

[0027] The multiple tubes 32 are arranged at intervals in the fourth direction. Each of the multiple tubes 32 is connected to one end of one side of the wing 31 in the sixth direction when the restriction device 10 is folded. Each of the multiple tubes 32 is a substantially cylindrical body with the fourth direction as its axial direction. Each of the multiple tubes 32 is formed so as to protrude toward the wing 21 side in the fifth direction beyond the wing 31 when the restriction device 10 is folded. As described above, the shaft 23 is inserted into each of the multiple tubes 32.

[0028] The limiting portion 33 is a portion for limiting the movement of the operating lever 102. When the limiting device 10 is folded, the limiting portion 33 is located on the other side of the center of the wing portion 31 in the fourth direction and on the other side of the wing portion 31 in the sixth direction. When the limiting device 10 is folded, the limiting portion 33 protrudes on the other side of the wing portion 31 in the fourth direction. Details will be described later, but when the support member 20 is attached to the mixer vehicle 100, the limiting portion 33 is rotatable about the rotation axis A so as to be located at a limiting position where the limiting portion 33 is located on the other side of the operating lever 102 in the first direction and limits the operation lever 102 from moving to the discharge position when the operating lever 102 is located in the non-discharge position, and a non-limiting position where the limiting portion 33 is not located on the other side of the operating lever in the first direction and does not limit the operation lever 102 from moving to the discharge position when the operating lever 102 is located in the non-discharge position. The limiting portion 33 has a first portion 40, a second portion 41, a third portion 42, a fourth portion 43, and a fifth portion 44.

[0029] The first portion 40 is formed at the other end (corner) of the limiting portion 33 on the other side in the fourth direction. Specifically, the first portion 40 is formed at the other end of the fourth portion 43 on the other side in the fourth direction and the other end of the fifth portion 44 on the other side in the fourth direction. When the limiting device 10 is folded, the first portion 40 is located on one side in the fourth direction toward the other side in the sixth direction. When the limiting device 10 is folded, the first portion 40 is located up to the other end of the limiting portion 33 on the other side in the sixth direction. Specifically, when the limiting device 10 is folded, the first portion 40 is located up to the other end of the fifth portion 44 on the other side in the sixth direction. The first portion 40 is formed in a convexly curved shape or a curved shape.

[0030] Although details will be described later, the first portion 40 is formed at the other end of the limiting portion 33 on the other side of the first direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. The first portion 40 is formed so as to be located on one side of the first direction as it moves toward the other side of the third direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position, and is formed so as to be located from one side to the other side of the third direction beyond one end 105 (see FIG. 4, etc.) on one side of the first direction of the operating lever 102. Specifically, the first portion 40 is formed so as to be located from one side of the third direction beyond one end 105 on one side of the first direction of the operating lever 102 to the other end of the limiting portion 33 on the other side of the third direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position.

[0031] The second portion 41 is formed at one end of the limiting portion 33 on one side in the fourth direction. Specifically, the second portion 41 is formed at one end of the fourth portion 43 on one side in the fourth direction and at one end of the fifth portion 44 on one side in the fourth direction. The second portion 41 is aligned along the sixth direction when the limiting device 10 is in a folded state.

[0032] Although details will be described later, the second portion 41 is formed at one end of the limiting portion 33 on one side in the first direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. The second portion 41 is formed so as to extend along the third direction and to be located from one side to the other side in the third direction of the other end 106 (see FIG. 4, etc.) on the other side in the first direction of the operating lever 102 when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position.

[0033] The third portion 42 is formed at one end of the limiting portion 33 on one side in the fourth direction. Specifically, the third portion 42 is formed at one end of the fifth portion 44 on one side in the fourth direction. When the limiting device 10 is folded, the third portion 42 is located on the other side in the fourth direction as it moves toward the other side in the sixth direction. When the limiting device 10 is folded, the third portion 42 is located from the other end of the second portion 41 on the other side in the sixth direction to the other end of the limiting portion 33 on the other side in the sixth direction. Specifically, when the limiting device 10 is folded, the third portion 42 is located from the other end of the second portion 41 on the other side in the sixth direction to the other end of the fifth portion 44 on the other side in the sixth direction.

[0034] Although details will be described later, the third portion 42 is formed at one end on one side in the first direction of the limiting portion 33 when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. The third portion 42 is formed so as to be located on the other side in the first direction as it moves toward the other side in the third direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position, and is formed so as to be located from the other end on the other side in the third direction of the second portion 41 to the other end on the other side in the third direction of the limiting portion 33.

[0035] When restriction device 10 is folded, fourth portion 43 is located on the other side of wing portion 31 in the sixth direction and on the other side of wing portion 31 in the fourth direction relative to the center of wing portion 31 in the fourth direction. When restriction device 10 is folded, fourth portion 43 protrudes on the other side in the fourth direction beyond wing portion 31. When restriction device 10 is folded, fourth portion 43 is a plate whose thickness direction is in the fifth direction, and is located closer to wing portion 31 than wing portion 21 in the fifth direction.

[0036] As will be described in more detail below, the fourth portion 43 is formed so as to be positioned at a distance from the opening 104 in the second direction when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position.

[0037] When restriction device 10 is in a folded state, fifth portion 44 is connected to the other end of fourth portion 43 on the other side in the sixth direction. When restriction device 10 is in a folded state, fifth portion 44 is positioned closer to wing portion 21 in the fifth direction as it moves toward the other side in the sixth direction.

[0038] Although details will be described later, the fifth portion 44 is connected to the other end of the fourth portion 43 on the other side in the third direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position. The fifth portion 44 is formed so as to be positioned toward the opening member 103 in the second direction as it moves toward the other side in the third direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position.

[0039] The attachment portion 34 is connected to one end of the restriction portion 33 on one side in the sixth direction when the restriction device 10 is folded. Specifically, the attachment portion 34 is connected to one end of the fourth portion 43 on one side in the sixth direction when the restriction device 10 is folded. When the restriction device 10 is folded, the attachment portion 34 is disposed on the surface of the wing portion 31 on the wing portion 21 side, on the other side of the center of the wing portion 31 in the fourth direction when the restriction device 10 is folded. The attachment portion 34 is attached to the wing portion 31. Specifically, the attachment portion 34 has a plurality of screw holes 45, and is attached to the wing portion 31 by screwing the screws 35 inserted into the through holes 39 into the screw holes 45.

[0040] When restriction device 10 is folded, protrusion 36 is connected to one end of fourth section 43 on one side in the sixth direction. Protrusion 36 is located on the other side of wing 31 in the fourth direction, is aligned with mounting section 34 in the fourth direction, and is connected to mounting section 34. When restriction device 10 is folded, protrusion 36 protrudes toward wing 21 in the fifth direction beyond fourth section 43, and protrudes to the same position as the surface of wing 21 on the opposite side to wing 31 in the fifth direction.

[0041] Although details will be described later, the protruding portion 36 is connected to one end of the fourth portion 43 on one side in the third direction when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is located at the limiting position. The protruding portion 36 is formed so as to protrude toward the opening member 103 in the second direction beyond the fourth portion 43 and to come into contact with the opening member 103 when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is located at the limiting position.

[0042] The magnets 37 are provided on the protruding portion 36. The magnets 37 are aligned in the fourth direction. When the restriction device 10 is in a folded state, the magnets 37 are exposed from the wing portion 31 toward the wing portion 21 in the fifth direction.

[0043] As will be described in more detail below, the multiple magnets 37 are provided on the protrusion 36 so as to be attracted to the opening member 103 when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position.

[0044] Magnet 38 is provided in fourth portion 43. Magnet 38 is exposed on the side opposite wing portion 21 in the fifth direction when restriction device 10 is in a folded state.

[0045] As will be described in more detail below, the magnet 38 is provided in the fourth portion 43 so as to be attracted to the mixer vehicle 100 when the support member 20 is attached to the mixer vehicle 100 and the restricting portion 33 is in the non-restricting position.

[0046] For example, the wing portion 21, the plurality of pipe portions 22, the shaft portion 23, the wing portion 31, and the plurality of pipe portions 32 are realized by hinges. Also, the limiting portion 33, the mounting portion 34, and the protruding portion 36 are integrally formed by a metal member or the like.

[0047] FIG. 3 is a schematic diagram showing a mixer vehicle 100 to which the limiting device 10 of FIG. 1 is attached. Next, the configuration of the mixer vehicle 100 will be described with reference to FIG. 3. Here, the first direction (X1 axis direction) is the front-rear direction of the mixer vehicle 100, the second direction (Y1 axis direction) is the left-right direction of the mixer vehicle 100, and the third direction (Z1 axis direction) is the up-down direction of the mixer vehicle 100. One side of the first direction is the front direction, the other side of the first direction is the rear direction, one side of the second direction is the left direction, the other side of the second direction is the right direction, one side of the third direction is the upward direction, and the other side of the third direction is the downward direction.

[0048] As shown in FIG. 3, the mixer vehicle 100 has a rotating drum 101, an operating lever 102, and an opening member 103.

[0049] Ready-mix concrete is contained in the rotating drum 101. The rotating drum 101 is a drive unit that is driven in response to the position of an operating lever 102, and rotates in a predetermined direction or stops rotating.

[0050] The operating lever 102 is a lever for operating the rotating drum 101. The operating lever 102 is movable in a first direction between a discharge position where the rotating drum 101 rotates in the discharge direction when the operating lever 102 is positioned, and a non-discharge position which is located to one side of the discharge position in the first direction and where the rotating drum 101 does not rotate in the discharge direction when the operating lever 102 is positioned. For example, the non-discharge position is a neutral position where the rotating drum 101 does not rotate, or a mixing position or a charging position where the rotating drum 101 rotates in the direction opposite to the discharge direction.

[0051] The opening member 103 has an opening 104 through which the operating lever 102 is inserted and which extends in the first direction. For example, the opening member 103 is a housing or the like formed of a metal member or the like.

[0052] FIG. 4 is a front view showing a state in which the limiting device 10 of FIG. 1 is located at the limiting position and the operating lever 102 is located at the non-discharge position. FIG. 5 is a side view showing a state in which the limiting device 10 of FIG. 1 is located at the limiting position and the operating lever 102 is located at the non-discharge position. FIG. 6 is a front view showing a state in which the limiting device 10 of FIG. 1 is located at the non-limiting position and the operating lever 102 is located at the discharge position. FIG. 7 is a side view showing a state in which the limiting device 10 of FIG. 1 is located at the non-limiting position and the operating lever 102 is located at the discharge position. Next, the limiting device 10 attached to the mixer vehicle 100 will be described with reference to FIG. 4 to FIG. 7. Note that, here, a case will be described in which the limiting device 10 is attached to the mixer vehicle 100 so that the fourth direction coincides with the first direction, the fifth direction coincides with the second direction, and the sixth direction coincides with the third direction. The rotational position of the rotating member 30 relative to the support member 20 when the limiting portion 33 is in the limiting position coincides with the rotational position of the rotating member 30 relative to the support member 20 when the limiting device 10 is folded.

[0053] 4 to 7, the support member 20 is attached to the mixer vehicle 100 so that the rotation axis A of the rotating member 30 extends in the first direction and is located on one side of the operating lever 102 in the third direction. Specifically, the support member 20 is attached to the opening member 103 by a plurality of screws 50.

[0054] The limiting portion 33 is rotatable about the pivot axis A so that when the support member 20 is attached to the mixer truck 100, it can be positioned in a limiting position (see Figures 4 and 5) where it is located on the other side of the operating lever 102 in the first direction and limits the movement of the operating lever 102 to the discharge position when the operating lever 102 is in the non-discharge position, and a non-restricting position (see Figures 6 and 7) where it is not located on the other side of the operating lever 102 in the first direction and does not limit the movement of the operating lever 102 to the discharge position when the operating lever 102 is in the non-discharge position.

[0055] When the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position, the other end portion of the limiting portion 33 on the other side in the third direction is positioned on the other side of the other end portion of the operating lever 102 on the other side in the third direction.

[0056] The first portion 40 is formed at the other end of the limiting portion 33 on the other side in the first direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. The first portion 40 is located on one side in the first direction toward the other side in the third direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. The first portion 40 is located from one side to the other side in the third direction beyond one end 105 on one side in the first direction of the operating lever 102 when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. Specifically, the first portion 40 is located from one side in the third direction beyond one end 105 on one side in the first direction of the operating lever 102 to the other end on the other side in the third direction of the limiting portion 33 when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. More specifically, when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position, the first portion 40 is located from one side in the third direction to the other end of the fifth portion 44 on the other side in the third direction, further than one end 105 on one side in the first direction of the operating lever 102. The first portion 40 is formed so that when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position, when the operating lever 102 is moved from the discharge position to the non-discharge position, the operating lever 102 enters between the first portion 40 and the edge of the opening 104, and pushes up the first portion 40 while contacting it, causing the rotating member 30 to rotate about the rotation axis A toward one side in the third direction.

[0057] The second portion 41 is formed at one end of the limiting portion 33 on one side in the first direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. The second portion 41 is located along the third direction from one side to the other side in the third direction of the other end 106 of the operating lever 102 on the other side in the first direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position.

[0058] The third portion 42 is formed at one end of the limiting portion 33 on one side in the first direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position. When the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position, the third portion 42 is located on the other side in the first direction as it moves toward the other side in the third direction, and is located from the other end of the second portion 41 on the other side in the third direction to the other end of the limiting portion 33 on the other side in the third direction. Specifically, when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position, the third portion 42 is located from the other end of the second portion 41 on the other side in the third direction to the other end of the fifth portion 44 on the other side in the third direction.

[0059] The fourth portion 43 is positioned at a distance from the opening 104 in the second direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position. When the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position, one end portion of the fourth portion 43 on one side in the third direction is positioned to one side of one end portion of the operating lever 102 on one side in the third direction.

[0060] The fifth portion 44 is connected to the other end of the fourth portion 43 on the other side in the third direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position. When the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position, the fifth portion 44 is located toward the opening member 103 in the second direction as it moves toward the other side in the third direction. When the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position, the fifth portion 44 is in contact with the opening member 103. When the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position, the other end of the fifth portion 44 on the other side in the third direction is located on the other side of the other end of the operating lever 102 on the other side in the third direction.

[0061] The protruding portion 36 is connected to one end of the fourth portion 43 on one side in the third direction in a state in which the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is located at the limiting position. The protruding portion 36 protrudes toward the opening member 103 in the second direction beyond the fourth portion 43 and is in contact with the opening member 103 in a state in which the support member 20 is attached to the opening member 103 and the limiting portion 33 is located at the limiting position.

[0062] The magnet 37 is provided on the protruding portion 36 so as to be attracted to the opening member 103 when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is in the limiting position.

[0063] The magnet 38 is provided in the fourth portion 43 so as to be attracted to the mixer vehicle 100 when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is positioned in the non-restricting position. Specifically, the magnet 38 is provided in the fourth portion 43 so as to be attracted to the opening member 103 when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is positioned in the non-restricting position.

[0064] When the operating lever 102 is not moved to the ejection position, the limiting portion 33 is placed in the limiting position as shown in FIGS.

[0065] When the operating lever 102 is moved to the ejection position, as shown in Figs. 6 and 7, the operating lever 102 is moved to the ejection position with the limiting portion 33 being positioned in the non-restricting position.

[0066] FIG. 8 is a front view showing a state in which the limiting device 10 in FIG. 1 is located at the limiting position and the operating lever 102 is located at the discharge position. FIG. 9 is a side view showing a state in which the limiting device 10 in FIG. 1 is located at the limiting position and the operating lever 102 is located at the discharge position. FIG. 10 is a front view showing a state in which the limiting device 10 in FIG. 1 is pushed up by the operating lever 102. FIG. 11 is a side view showing a state in which the limiting device 10 in FIG. 1 is pushed up by the operating lever 102. FIG. 12 is a front view showing a state in which the limiting device 10 in FIG. 1 is located at the limiting position and the operating lever 102 is located at the non-discharge position. FIG. 13 is a side view showing a state in which the limiting device 10 in FIG. 1 is located at the limiting position and the operating lever 102 is located at the non-discharge position. Next, with reference to FIG. 8 to FIG. 13, a case in which the operating lever 102 is moved to the non-discharge position when the operating lever 102 is located at the discharge position and the limiting portion 33 is located at the limiting position will be described.

[0067] As shown in FIGS. 8 and 9, when the operating lever 102 is in the discharge position and the limiting portion 33 is in the limiting position, the operating lever 102 is moved to one side in the first direction.

[0068] 10 and 11, the operating lever 102 pushes the first portion 40 toward one side in the first direction, causing the limiting portion 33 to rotate about the rotation axis A toward one side in the third direction, and the operating lever 102 can be continued to move toward one side in the first direction. That is, the movement of the operating lever 102 pushes up the rotating member 30 from the first portion 40 (forced release portion), causing it to rotate to a forced release position in a forcibly released state.

[0069] As shown in FIGS. 12 and 13, when the operating lever 102 is positioned to one side of the limiting portion 33 in the first direction, the limiting portion 33 returns to the limiting position by its own weight.

[0070] In this way, when the operating lever 102 is in the discharge position and the limiting portion 33 is in the limiting position, the operating lever 102 can be easily moved to the non-discharge position by simply moving the operating lever 102 to one side in the first direction. Also, since the limiting device 10 can be installed so as not to be located on either side of the opening 104 in the first direction, it is possible to prevent the limiting device 10 from protruding from the opening member 103 in the first direction, and it is possible to prevent the installation space for the limiting device 10 in the first direction from becoming large.

[0071] As described above, the limiting device 10 according to the embodiment of the present invention is a limiting device 10 attached to a mixer truck 100, and the mixer truck 100 includes a rotating drum 101, an operating lever 102 for operating the rotating drum 101, and an opening member 103 having an opening 104 through which the operating lever 102 is inserted and extending in a first direction. The operating lever 102 has a discharge position where the rotating drum 101 rotates in the discharge direction when the operating lever 102 is in a position, and a second position where the rotating drum 101 rotates in the discharge direction when the operating lever 102 is in a position, and a third position where the rotating drum 101 rotates in the discharge direction when the operating lever 102 is in a position. The limiting device 10 is movable in a first direction between a non-discharge position in which the rotating drum 101 does not rotate in the discharge direction when the limiting device 10 is located at a first position and a non-discharge position in which the rotating drum 101 does not rotate in the discharge direction when the limiting device 10 is located at a second position, and a rotating member 30 rotatably supported by the support member 20. When a direction in which the opening 104 is open is defined as a second direction, and a direction perpendicular to the first direction and perpendicular to the second direction is defined as a third direction, the support member 20 is arranged to be mounted on the mixer vehicle 100 so that a rotation axis A of the rotating member 30 extends in the first direction and is located on one side of the operation lever 102 in the third direction. The rotating member 30 has a limiting portion 33 that is rotatable about a rotation axis A so that, when the support member 20 is attached to the mixer vehicle 100, the rotating member 30 can be positioned at a limiting position where the operating lever 102 is located on the other side of the operating lever 102 in the first direction and limits the operation lever 102 from moving to the discharge position when the operating lever 102 is located at the non-discharge position, and at a non-limiting position where the operating lever 102 is not located on the other side of the operating lever 102 in the first direction and does not limit the operation lever 102 from moving to the discharge position when the operating lever 102 is located at the non-discharge position. The limiting portion 33 has a first portion 40 formed at the other end of the limiting portion 33 on the other side of the first direction when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position, and the first portion 40 is formed so as to be positioned on one side of the first direction as it moves toward the other side of the third direction when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position, and is formed so as to be positioned from one side to the other side in the third direction further than one end 105 on one side of the first direction of the operating lever 102.

[0072] According to this, by positioning the limiting portion 33 at the limiting position, the operation lever 102 can be restricted from moving to the discharge position. In addition, the first portion 40 is formed so as to be positioned on one side of the first direction as it moves toward the other side of the third direction when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is positioned at the limiting position, and is formed so as to be positioned from one side to the other side of the third direction beyond one end portion 105 on one side of the first direction of the operation lever 102. As a result, when the operation lever 102 is positioned at the discharge position and the limiting portion 33 is positioned at the limiting position, by moving the operation lever 102 to one side in the first direction, the operation lever 102 can push the first portion 40 to one side in the first direction and rotate the limiting portion 33 toward one side in the third direction, and the operation lever 102 can be easily moved to the non-discharge position. In this way, the operation lever 102 can be restricted from moving to the discharge position, and the operation lever 102 can be easily moved to the non-discharge position when the operation lever 102 is unintentionally positioned at the discharge position.

[0073] Furthermore, in the restriction device 10 according to the embodiment of the present invention, the first portion 40 is formed in a convexly curved shape or in the shape of a curved portion.

[0074] According to this, when the operating lever 102 is in the ejection position and the limiting portion 33 is in the limiting position, by moving the operating lever 102 to one side in the first direction, the limiting portion 33 can be easily rotated toward one side in the third direction, and the operating lever 102 can be even more easily moved to the non-ejection position.

[0075] In addition, in the restriction device 10 according to the embodiment of the present invention, the restriction portion 33 has a second portion 41 and a third portion 42 formed at one end of the restriction portion 33 on one side of the first direction when the support member 20 is attached to the mixer truck 100 and the restriction portion 33 is positioned in the restriction position, and the second portion 41 is formed so as to extend along the third direction when the support member 20 is attached to the mixer truck 100 and the restriction portion 33 is positioned in the restriction position, and is formed so as to be located from one side to the other side of the third direction further than the other end 106 on the other side of the first direction of the operating lever 102, and the third portion 42 is formed so as to be located on the other side of the first direction as it moves toward the other side of the third direction when the support member 20 is attached to the mixer truck 100 and the restriction portion 33 is positioned in the restriction position, and is formed so as to be located from the other end of the second portion 41 on the other side of the third direction to the other end of the restriction portion 33 on the other side of the third direction.

[0076] According to this, when the limiting portion 33 is moved from the limiting position to the non-restricting position, interference between the limiting portion 33 and the operating lever 102 can be suppressed, so that the limiting portion 33 can be easily positioned to the non-restricting position.

[0077] In addition, in the limiting device 10 according to an embodiment of the present invention, the limiting portion 33 has a fourth portion 43 formed so as to be positioned at a distance from the opening 104 in the second direction when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position, and the rotating member 30 has a protrusion 36 connected to one end of the fourth portion 43 on one side in the third direction when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position, and the protrusion 36 is formed so as to protrude toward the opening member 103 in the second direction more than the fourth portion 43 when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position, and is formed so as to contact the opening member 103.

[0078] This allows a finger or the like to be easily inserted between the restricting portion 33 and the opening 104, and the restricting portion 33 can be rotated from the restricting position to the non-restricting position by the finger or the like, so that the restricting portion 33 can be easily positioned to the non-restricting position.

[0079] In addition, in the restriction device 10 of the embodiment of the present invention, the restriction portion 33 has a fourth portion 43 formed so as to be positioned at a distance from the opening 104 in the second direction when the support member 20 is attached to the mixer truck 100 and the restriction portion 33 is positioned in the restriction position, and a fifth portion 44 connected to the other end of the fourth portion 43 on the other side in the third direction when the support member 20 is attached to the mixer truck 100 and the restriction portion 33 is positioned in the restriction position, and the fifth portion 44 is formed so as to be positioned toward the opening member 103 in the second direction as it moves toward the other side in the third direction when the support member 20 is attached to the mixer truck 100 and the restriction portion 33 is positioned in the restriction position.

[0080] According to this, a finger or the like can be hooked onto the fifth portion 44, and the restricting portion 33 can be rotated from the restricting position to the non-restricting position by the finger or the like, so that the restricting portion 33 can be easily positioned to the non-restricting position.

[0081] In addition, in the limiting device 10 according to an embodiment of the present invention, the rotating member 30 has a magnet 37 provided on the protruding portion 36 so as to be attracted to the opening member 103 when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is positioned in the limiting position.

[0082] According to this, the restricting portion 33 can be easily kept in the restricting position, so that the movement of the operating lever 102 to the ejection position can be further restricted.

[0083] In addition, in the limiting device 10 according to an embodiment of the present invention, the rotating member 30 has a magnet 38 provided in the fourth portion 43 so as to be attracted to the mixer vehicle 100 when the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is positioned in the non-limiting position.

[0084] According to this, the restricting portion 33 can be easily kept in the non-restricting position, so that the operating lever 102 can be easily moved to the ejection position.

[0085] Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments. The scope of the present invention is indicated by the claims rather than the description of the above embodiments, and further includes all modifications within the meaning and scope of the claims.

[0086] In the above embodiment, the first direction is the front-rear direction of the mixer vehicle 100, the second direction is the left-right direction of the mixer vehicle 100, and the third direction is the up-down direction of the mixer vehicle 100. However, this is not limited to this. For example, the first direction may be the left-right direction of the mixer vehicle, and the second direction may be the front-rear direction of the mixer vehicle, etc.

[0087] In the above embodiment, the first portion 40 is curved in a convex shape, but the present invention is not limited to this. For example, the first portion may be linear.

[0088] In the above embodiment, the case where the second portion 41 is formed has been described, but the present invention is not limited to this. For example, instead of the second portion 41, a convex portion or the like may be formed on one side in the first direction from the protruding portion 36, and a concave portion or the like may be formed on the other side in the first direction.

[0089] In the above embodiment, the case where the third portion 42 is formed has been described, but the present invention is not limited to this. For example, the third portion 42 may not be formed, and the second portion 41 may be formed up to the other end of the limiting portion 33 on the other side in the third direction in a state where the support member 20 is attached to the mixer vehicle 100 and the limiting portion 33 is located at the limiting position.

[0090] In the above embodiment, the case where the protruding portion 36 and the fifth portion 44 are formed in the limiting portion 33 has been described, but the present invention is not limited to this. For example, the limiting portion 33 may be formed with only one of the protruding portion 36 and the fifth portion 44, and the first portion 40 may be formed in the one of the protruding portion 36 and the fifth portion 44.

[0091] In the above embodiment, the fourth portion 43 is located at a distance from the opening 104 in the second direction when the support member 20 is attached to the mixer truck 100 and the limiting portion 33 is located at the limiting position, but this is not limited to the above. For example, the fourth portion may be in contact with the opening member and may not be located at a distance from the opening in the second direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position. In this case, the protruding portion and the fifth portion may not be formed.

[0092] Furthermore, the vehicle to which the limiting device 10 is applied is not limited to a mixer truck. For example, the limiting device 10 can be applied to the operating levers of various devices in various other vehicles, such as the operating levers of hydraulic cylinders mounted on each vehicle in a dump truck, a container transport vehicle, a lift vehicle, etc. [Explanation of symbols]

[0093] 10. Restriction Device 20 Support member 21 Wings 22 Pipe section 23 Shaft 24, 25 Through holes 30 Rotating member 31 Wings 32 Pipe section 33 Restrictions 34 Mounting part 35 Screws 36 Protrusion 37, 38 Magnets 39 Through hole 40 Part 1 41 Part 2 42 Part 3 43 Part 4 44 Part 5 45 screw hole 50 Screw 100 Mixer Truck 101 Rotating Drum 102 Operating lever 103 Opening material 104 Opening 105 One end 106 Other end A Rotation axis

Claims

1. a device body provided on a vehicle and having an opening formed of a long groove extending in a predetermined direction on an outer surface; an operation lever that is movably attached to the device body while being guided through the opening and that drives a drive unit mounted on the vehicle; A rotating member rotatably attached to the device body; Equipped with The rotating member is a limiting portion that can limit movement of the operating lever in one direction along the long side of the opening when the operating lever is located on one side of the rotating member, and a forced release portion that is provided at a corner at a position opposite to the limiting portion and can push up the rotating member from the corner of the rotating member to forcibly release the rotating member when the operating lever is located on the other side of the rotating member, by movement of the operating lever in a direction opposite to the one direction; A restriction device characterized in that the restriction device is supported rotatably around a rotation axis parallel to the long side of the opening, and is configured to be rotatable between a non-restriction position of the operating lever that opens the opening, a restriction position that blocks a specified portion of the opening and locks the operating lever in the restriction portion, and a forced release position in which the operating lever contacts the forced release portion to push the rotating member up between the non-restriction position and the restriction position and is forcibly released.

2. A limiting device attached to a mixer truck, The mixer truck is A rotating drum; An operating lever for operating the rotating drum; an opening member having an opening through which the operating lever is inserted and extending in a first direction, the operating lever is movable in the first direction between a discharge position where the rotating drum rotates in the discharge direction when the operating lever is in the position and a non-discharge position which is located on one side of the discharge position in the first direction and where the rotating drum does not rotate in the discharge direction when the operating lever is in the position, The limiting device is A support member attached to the mixer truck; a rotating member rotatably supported by the support member, When a direction in which the opening is open is defined as a second direction, and a direction perpendicular to the first direction and perpendicular to the second direction is defined as a third direction, The support member is attached to the mixer vehicle such that a rotation axis of the rotating member extends in the first direction and is located on one side of the operation lever in the third direction, the rotating member has a limiting portion that is rotatable about the rotation axis so as to be located at a limiting position that is located on the other side of the operating lever in the first direction and limits the movement of the operating lever to the discharge position when the operating lever is located at the non-discharge position, when the supporting member is attached to the mixer vehicle, and a non-limiting position that is not located on the other side of the operating lever in the first direction and does not limit the movement of the operating lever to the discharge position when the operating lever is located at the non-discharge position, the limiting portion has a first portion formed at the other end of the limiting portion on the other side in the first direction when the support member is attached to the mixer truck and the limiting portion is located at the limiting position, The first portion is formed so as to be positioned on one side of the first direction as it moves toward the other side of the third direction when the support member is attached to the mixer truck and the limiting portion is positioned in the limiting position, and is formed so as to be positioned from one side to the other side of the third direction beyond one end of the operating lever on one side of the first direction.

3. 3. The restrictor device of claim 2, wherein the first portion is formed in a convexly curved or curved shape.

4. the limiting portion has a second portion and a third portion formed at one end of the limiting portion on one side in the first direction when the support member is attached to the mixer vehicle and the limiting portion is located at the limiting position, the second portion is formed along the third direction when the support member is attached to the mixer truck and the limiting portion is positioned at the limiting position, and is formed to be located from one side to the other side in the third direction beyond the other end of the operating lever on the other side in the first direction, The restriction device described in claim 2, characterized in that the third portion is formed so as to be positioned on the other side of the first direction as it moves toward the other side of the third direction when the support member is attached to the mixer truck and the restriction portion is positioned in the restriction position, and is formed so as to be positioned from the other end of the second portion on the other side of the third direction to the other end of the restriction portion on the other side of the third direction.

5. the limiting portion has a fourth portion formed to be positioned at a distance from the opening in the second direction when the support member is attached to the mixer vehicle and the limiting portion is positioned at the limiting position, the rotating member has a protruding portion connected to one end of the fourth portion on one side in the third direction in a state in which the support member is attached to the mixer vehicle and the limiting portion is located at the limiting position, The restriction device described in claim 2, characterized in that when the support member is attached to the mixer truck and the restriction portion is positioned in the restriction position, the protrusion is formed so as to protrude toward the opening member in the second direction further than the fourth portion and is formed so as to contact the opening member.

6. The limiting portion has a fourth portion formed to be positioned at a distance from the opening in the second direction when the support member is attached to the mixer vehicle and the limiting portion is located at the limiting position, and a fifth portion connected to the other end of the fourth portion on the other side in the third direction when the support member is attached to the mixer vehicle and the limiting portion is located at the limiting position, The restriction device described in claim 2, characterized in that the fifth portion is formed so as to be positioned toward the opening member in the second direction as it moves toward the other side of the third direction when the support member is attached to the mixer truck and the restriction portion is positioned in the restriction position.

7. The restriction device described in claim 5, characterized in that the rotating member has a magnet provided on the protrusion so as to be attracted to the opening member when the support member is attached to the mixer truck and the restriction portion is positioned in the restriction position.

8. The restriction device described in claim 5 or 6, characterized in that the rotating member has a magnet provided in the fourth portion so as to be attracted to the mixer vehicle when the support member is attached to the mixer vehicle and the restriction portion is positioned in the non-restriction position.

Images