JP3689022B2 - Plane handle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flat handle with a lock mechanism attached to a door of a switchboard or an electrical equipment storage case.
[0002]
[Prior art]
A conventional flat handle of this type is shown in FIG.
[0003]
This flat handle 101 pivotally supports the handle 103 in a body case 102 attached to a door 150 such as a switchboard, and engages with the lower end of the handle 103 so that the handle 103 is stored. A push button 105 is provided adjacent to the handle portion 103, and a dial lock 106 is incorporated into the push button 105.
[0004]
The dial lock 106 restricts the push-in operation of the push button 105 at the time of locking, maintains the handle 103 in the retracted state, and allows the push-in operation of the push button 105 at the time of unlocking.
[0005]
Reference numeral 107 in the figure denotes a locking plate that engages with the handle portion 103 and moves as the handle portion 103 is rotated up and down, and reference numeral 108 denotes when the handle portion 103 is rotated (in a raised state). The coil spring for urging | biasing the handle | steering-wheel part 103 in the direction which raises automatically is shown.
[0006]
[Problems to be solved by the invention]
However, according to the conventional structure, since the push button 105 for maintaining the handle portion in the retracted state is arranged adjacent to the lower end of the handle portion 103, the flat handle 101 becomes large and the parts There was a problem that it was disadvantageous in terms of assembly workability and cost because of the large number of points.
[0007]
In addition, since the dial lock 106 is provided on the push button 105 that is the operation unit, when the push button 105 is operated (when the button is pressed), the finger touches the dial portion of the dial lock 106, and the dial portion is unnecessary. There is also a problem that it is disadvantageous in terms of operability.
[0008]
Further, in this conventional structure in which the dial lock 106 is arranged on the push button portion 105, there is a problem that the arrangement space of the dial lock 106 is limited.
[0009]
In general, from the viewpoint of maintainability, it is preferable to have as many combinations of unlock numbers as possible (usually 3 or 4 digits are generally used), but in this conventional structure in which the dial lock 106 is arranged on the push button 105, As described above, since the arrangement space for the dial lock 106 is limited, the number of dials is limited if the dial size is secured to some extent in consideration of operability (in this conventional example, there are two dials) and can be set. There are fewer combinations of release numbers. Also, if the number of dials is increased in consideration of combinations of release numbers, the size of the dial is reduced, which is disadvantageous in terms of operability.
[0010]
SUMMARY OF THE INVENTION An object of the present invention is to provide a flat handle that has a simple structure and is capable of achieving both a reduction in size and an arrangement space for a dial lock.
[0011]
[Means for Solving the Problems]
In the first aspect of the present invention, a handle shaft rotatably provided on the main body case is provided with a handle portion pivotally supported at one end side so that the other end side of the handle portion is engaged with the main body case. A lock shaft, a sleeve that is inserted into the outer periphery of the lock shaft and moves in the axial direction together with the lock shaft, and a dial that is inserted into the outer periphery of the sleeve to lock and allow axial movement of the sleeve. A dial lock is provided on the handle portion, an engagement portion that engages with the main body case is provided on an end portion of the lock shaft, and the engagement portion is provided so as to be freely accessible from the other end of the handle portion. It is characterized in that the portion is locked to the main body case.
[0012]
In the invention of claim 2, the operation part for moving the lock shaft according to claim 1 in the axial direction is arranged to protrude on the surface of the handle part, and the operation part is arranged on the pivot shaft side of the handle part. The operation input point in the unlatched state is closer to the one end side than the rotation center of the pivot shaft as the operation portion moves in the unlatching operation that is arranged at the end portion and releases the lock between the handle portion and the main body case. It is characterized by being provided so as to be offset.
[0013]
The invention of claim 3 is characterized in that the dial lock according to claim 1 or 2 is provided on the other end side of the handle portion spaced apart from the operation portion.
[0014]
According to a fourth aspect of the present invention, an urging member is provided across the handle portion and the handle shaft according to the first to third aspects, and the handle portion is stored in a main body case in the handle portion. A contact surface facing the seat surface for attaching the urging member of the handle shaft is continuously provided in accordance with the state and the cause state caused from the main body case.
[0015]
【The invention's effect】
According to the first aspect of the present invention, the lock shaft, the sleeve that is inserted into the outer periphery of the lock shaft and moves in the axial direction together with the lock shaft, and the axial movement of the sleeve that is inserted into the outer periphery of the sleeve are locked and allowed. Since a dial lock composed of a dial is provided in the handle portion, a sufficient space for arranging the dial lock can be secured. Thereby, it is possible to achieve both improvement in operability of the dial lock and securing of the number of combinations of unlock numbers.
[0016]
In addition, an engaging portion that engages with the main body case is provided at an end of the lock shaft, and the engaging portion is provided so as to be freely accessible from the other end of the handle portion, thereby locking the handle portion to the main body case. Therefore, it is not necessary to set the push button part, which is the operation part, separately from the handle part as in the past, so the flat handle can be downsized, the number of parts is reduced, and the assembly workability is improved. Can be advantageous in terms of cost.
[0017]
According to the second aspect of the present invention, in addition to the effect of the first aspect, the operation part for moving the lock shaft in the axial direction is arranged to project on the surface of the handle part, and the operation part is pivotally supported by the handle part. The operation input point in the unlatched state is positioned at the one end from the rotation center of the pivot shaft in accordance with the movement of the operation portion in the unlatching operation which is disposed at the shaft side end portion and releases the lock between the handle portion and the main body case. Since the handle portion is offset so that the handle portion is unlatched and one end side of the handle portion is pushed into the main body case side to cause the handle portion to rotate around the pivot shaft, a series of operations are performed. And operability can be improved.
[0018]
According to the invention of claim 3, in addition to the effect of claim 1 or 2, since the dial lock is provided on the other end side of the handle part spaced apart from the operation part, the handle part is unlatched. It is possible to avoid a finger from touching the dial lock during operation and moving the dial lock unnecessarily.
[0019]
According to the invention of claim 4, in addition to the effects of claims 1 to 3, an urging member is provided across the handle portion and the handle shaft, and the handle portion is accommodated in the main body case in the handle portion. Since the contact surface facing the seat surface for attaching the biasing member of the handle shaft is continuously provided according to the stored state and the raised state caused from the main body case, these contact points provided continuously are provided. The handle portion can be urged to both the retracted state and the raised state by one urging member by the contact surface, and the operability can be further improved.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show a state in which the handle part in the perspective view of the flat handle is accommodated in the main body case (accommodated state) and a state in which the handle part is raised from the main body case (raised state). 4 is an engaged state and a disengaged state of the sectional view in the storage state of the flat handle, FIG. 5 is a sectional view in the raised state of the flat handle, FIG. 6 is a front view of the main body case, FIG. FIG. 8 is a rear view of the flat handle, and FIGS. 9 to 12 are explanatory views showing a main part of the dial lock.
[0021]
Reference numeral 1 denotes a flat handle attached to a door of an electrical equipment storage case that stores a switchboard or the like. Reference numeral 2 denotes a vertically long main body case. Bolt holes 2b and 2b for fastening and fixing the main body case of the flat handle 1 to the door are formed in the upper and lower flange portions 2a and 2a. Further, the main body case 2 has a receiving portion 4 for receiving the handle portion 3 when not in use. A handle shaft 5 is provided above the housing part 4 so as to pass through from the front side to the back side of the main body case 2 and turn.
[0022]
A bolt hole 5b is formed at the end on the back side of the handle shaft 5 for fastening a locking plate (not shown) through a washer, a spring washer and the like. On the other hand, the handle portion 3 is pivotally supported by the pivot shaft 6 at the front side end portion of the handle shaft 5 so as to be raised and lowered. An O-ring 7 is set on the outer periphery of the cylindrical portion 5 a of the handle shaft 5 to seal a gap between the inner peripheral surface 2 c of the main body case 2 and the outer periphery of the cylindrical portion 5 a of the handle shaft 5. Retaining resistance and rotational resistance are moderately imparted.
[0023]
The handle portion 3 includes a handle main body 3A and a cover portion 3B, and a dial lock 8 is provided between the handle main body 3A and the cover portion 3B.
[0024]
The dial lock 8 includes a lock shaft 9, sleeves 10 to 13 which are inserted into the outer periphery of the lock shaft 9, engage with an end portion 9 a of the lock shaft 9, and move in the axial direction together with the lock shaft 9, and the sleeve The dial lock 8 includes a dial 14 to 17 which is inserted into the outer circumferences 10 to 13 and locks and allows the sleeve 10 to 13 to move in the axial direction. 3 is provided at the lower end (the other end).
[0025]
An operation unit 18 for moving the lock shaft 9 in the axial direction includes a slider 18A disposed on the surface of the handle body 3A of the handle unit 3, and a slider 18A disposed between the handle body 3A and the cover unit 3B. The connecting member 18 </ b> B is connected to the lock shaft 9, and the operation input point P of the operating portion 18 is disposed so as to protrude from the surface of the handle portion 3.
[0026]
Furthermore, an engaging portion 9a that engages with an engaging hole 2d provided in the main body case 2 is provided at the lower end portion of the lock shaft 9, and the engaging portion 9a is connected to the lower end portion (the other end of the handle portion 3). The handle portion 3 is locked to the main body case 2 by being provided so as to be freely inserted and removed from the main body case 2.
[0027]
Reference numeral 19 denotes a return spring provided between the protrusion 3a provided on the back side of the handle main body 3A and the stepped portion 18b of the connecting member 18B. The return spring 19 causes the lock shaft 9 to engage the engaging portion 9a with the main body case. 2 is biased toward the engagement hole 2d.
[0028]
In the present embodiment, as shown in FIGS. 1 to 5, the slider 18 </ b> A of the operation portion 18 is disposed at the end of the handle portion 3 on the side of the pivot shaft 6, and between the handle portion 3 and the main body case 2. The operation input point P ′ in the unlatched state is offset to the upper end side (one end side) from the rotation center of the pivot shaft 6 with the movement of the slider 18A in the unlatching operation (FIG. 4) for releasing the lock. Provided.
[0029]
Reference numeral 20 denotes a coil spring (biasing member) provided across the handle portion 3 and the handle shaft 5. Specifically, the handle main body 3 </ b> A is provided across the pivot shaft 6 side rear surface and the handle shaft 5.
[0030]
Further, the handle shaft 5 is attached to the back surface of the handle main body 3A according to the storage state in which the handle portion 3 is housed in the storage portion 4 of the main body case 2 and the raising state caused by the main body case 2. The contact surfaces 21 and 22 facing the seat surface 5c are continuously formed, and the handle portion 3 is in the retracted state and the raised state by the seat surface 5c and the contact surfaces 21 and 22, respectively. I try to keep it in a state.
[0031]
Reference numeral 24 denotes a restriction pin that restricts the rotation direction of the handle portion 3. The restriction pin 24 is inserted into a hole 26 provided on the back side of the cylindrical portion 5 a of the handle shaft 5, and is a length provided in an arc shape provided in the main body case 2 in a state where the handle shaft 5 is assembled to the main body case 2. The rotation direction and the rotation angle of the handle portion 3 are regulated by being inserted into the hole 25 (see FIGS. 6 and 8). As shown in FIG. 7, the hole 26 into which the restriction pin 24 is inserted is formed with a left turning 26a and a right turning 26b, and an electric equipment storage case to which the flat handle 1 is attached. It can be freely selected according to the direction in which the door opens.
[0032]
Here, the configuration of the dial lock 8 will be described with reference to FIGS. As described above, the dial lock 8 is inserted into the outer periphery of the lock shaft 9 and the outer periphery of the lock shaft 9, engages with the end portion 9 a of the lock shaft 9, and moves in the axial direction together with the lock shaft 9. 13 and dials 14 to 17 inserted into the outer periphery of the sleeves 10 to 13 for locking and allowing the axial movement of the sleeves 10 to 13.
[0033]
As shown in FIG. 9, the sleeves 10 to 13 are provided with two kinds of long and short protrusions 30 and 31 at regular intervals on the circumferential surface thereof. On the other hand, the dials 14 to 17 are formed with locking recesses 32 corresponding to the long protrusions 31 on the inner surfaces thereof. The sleeves 10 to 13 and the dials 14 to 17 are assembled as shown in FIG. 10, and the outer peripheral surfaces on which the numbers of the dials 14 to 17 are written are exposed to the outside.
[0034]
One end of the lock shaft 9 is provided with a step portion 33 that acts to restrain the sleeve 10 so that the sleeves 10 to 13 can be moved together with the axial movement of the lock shaft 9, and the other end is Is provided with a recess 34 and engages with a projection 35 provided on the connecting member 18B of the operation unit 18 so that the lock shaft 9 is moved in the axial direction by an operation force input to the operation unit 18.
[0035]
11 and 12 are cross-sectional views taken along line AA of FIG. 3, FIG. 11 shows an unlocked state, and FIG. 12 shows a locked state.
[0036]
As shown in FIG. 11, in the unlocked state, the long protrusion 31 of the sleeve 10 and the locking recess 32 of the dial 17 coincide. Thereby, the axial movement of the lock shaft 9 and the sleeves 10 to 13 is allowed, and the operation unit 18 can be operated.
[0037]
On the other hand, FIG. 12 shows a state in which the dial 17 is sent by one scale in the direction of the arrow from FIG. 11, and is in a locked state. That is, since the long protrusion 31 of the sleeve 10 and a part of the locking recess 32 of the dial 17 are misaligned, when the lock shaft 9 and the sleeves 10 to 13 are moved in the axial direction, the portions are locked, Axial movement is restricted. Thereby, operation of the operation part 18 can be controlled.
[0038]
When changing the unlocking code of the dial 14, in the unlocked state, the slider 18 </ b> A is moved and the locking recesses 32 of the dials 14 to 17 are engaged with the long protrusions 31 of the sleeves 10 to 13. If the dial 17 is rotated to change the position, the dial 17 and the sleeve 13 rotate together, so that the exposed dial number changes and the unlocking code can be changed.
[0039]
Reference numeral 37 denotes a leaf spring that is in pressure contact with the dial 17, and the notch 36 of the dial 17 is locked by a bent tip portion 37 a so that the dial is clicked.
[0040]
The flat handle 1 configured as described above accommodates the handle portion 3 in the receiving portion 4 provided on the front surface of the main body case 2 and protrudes from the lower end of the handle portion 3 as shown in FIGS. The engaging portion 9a is locked in the engaging hole 2d of the main body case 2 and is locked by the dial lock 8 to restrict the movement of the slider 18A so that the handle portion 3 cannot be caused.
[0041]
At the time of inspection or work, the operator operates the dials 14 to 17 to unlock the dial lock 8 and then moves the slider 18A (upward in the figure) as shown in FIGS. To do. At this time, the force F applied to the operation input point P acts in the direction in which the slider 18A slides by the component force f1, and the engagement between the engagement portion 9a and the engagement hole 2d is released. When the engagement between the engagement portion 9a and the engagement hole 2d is released, the force F applied to the operation input point P is caused to cause the upper end portion (one end) of the handle portion 3 to move to the main body case 2 by the component force f2. It acts to push into the accommodating portion 4 side, and causes the handle portion 3 as shown in FIGS. Then, the door can be opened by unlocking the lock plate (not shown) attached to the handle shaft 5 by rotating the handle portion 3 thus caused.
[0042]
According to the structure of the above embodiment, since the dial lock 8 is provided in the said handle part 3, the arrangement | positioning space of the dial lock 8 can fully be ensured. Thereby, improvement in the operativity of the dial lock 8 and ensuring of the number of combinations of unlock numbers can be achieved at the same time.
[0043]
A slider 18A, which is an operating portion 18 for moving the lock shaft 9 in the axial direction, is disposed on the surface of the handle portion 3, and is engaged with the engagement hole 2d of the main body case 2 at the lower end portion of the lock shaft 9. Since the engaging part 9b is provided and the engaging part 9b is provided so as to be freely accessible from the lower end (the other end) of the handle part 3, the handle part 3 is locked to the main body case 2. As described above, since the push button portion which is the operation portion does not need to be set separately from the handle portion, the flat handle 1 can be reduced in size, the number of parts can be reduced, the assembling workability can be improved, and the cost can be improved. It can be.
[0044]
In particular, according to this embodiment, the slider 18A (operation portion 18) is disposed at the end of the handle portion 3 on the pivot shaft 6 side, and as shown in FIGS. The operation input point P in the unlatched state is offset from the rotation center of the pivot shaft 6 to the upper end (one end side) with the movement of the slider 18A in the unlatching operation for releasing the latching with 2. Therefore, the unlatching operation of the handle portion 3 and the operation that causes the handle portion 3 to rotate around the pivot shaft 6 by pushing the upper end portion of the handle portion 3 into the main body case side 2 can be performed in a series of operations. The operability can be improved.
[0045]
Further, since the dial lock 8 is provided at the lower end (the other end side) of the handle portion 3 that is separated from the slider 18A, the finger touches the dial lock 8 when the handle portion 3 is unlatched. It can be avoided that the unlocking code is changed by moving the dials 14 to 17 unnecessarily.
[0046]
Moreover, in this structure in which the dial lock 8 is provided at the lower end portion of the handle portion 3, the cover portion 3 </ b> B of the handle portion 3 has an appropriate bulge due to the dial lock 8. It functions as a grip for the occasion and can improve the operational feeling.
[0047]
Further, a coil spring 20 as an urging member is provided across the handle portion 3 and the handle shaft 5, and the handle portion 3 is stored in the main body case 2 from the main body case 2. Since the contact surfaces 21 and 22 that face the bearing surface 5c for attaching the biasing member of the handle shaft 5 are continuously provided according to the raised state caused, the contact surfaces provided continuously. 21 and 22 can urge the handle portion 3 to both the retracted state and the raised state with one coil spring 20, and further improve the operability in the handle retracting direction compared to the conventional coil spring 108. Can do.
[0048]
In the above-described embodiment, four dials of the dial lock 8 are provided. However, the present invention is not limited to this, and it is needless to say that the dial can be freely set by a combination of unlock numbers.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state (accommodated state) in which a handle part is accommodated in a main body case.
FIG. 2 is a perspective view showing a state in which the handle portion is raised from the main body case (raised state).
FIG. 3 is a cross-sectional view showing a state in which a handle portion is housed in a main body case (a housed state).
4 is a cross-sectional view showing an unlatched state of FIG. 3;
FIG. 5 is a cross-sectional view showing a state where the handle part is raised from the main body case (unlocked state).
FIG. 6 is a front view of a main body case.
FIG. 7 is a rear view of the handle shaft.
FIG. 8 is a rear view of a flat handle (a state in which a handle portion is assembled to a main body case).
FIG. 9 is an exploded perspective view showing a main part of the dial lock.
FIG. 10 is a perspective view showing a main part of the dial lock.
11 is a cross-sectional view taken along the line AA in FIG. 3, showing the unlocked state of the dial lock.
12 is a cross-sectional view taken along the line AA in FIG. 3, showing a locked state of the dial lock.
13 is a cross-sectional view corresponding to FIG. 3 of a conventional structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Planar handle 2 Main body case 3 Handle part 5 Handle shaft 6 Pivot shaft 8 Dial lock 9 Lock shaft 9a Engagement part 10, 11, 12, 13 Sleeve 14, 15, 16, 17 Dial 18 Operation part 20 Coil spring (with Force member)
21, 22 Contact surface

Claims (4)

A handle shaft rotatably provided on the main body case is provided with a handle portion pivotally supported at one end side so that the other end side of the handle portion can be raised and lowered.
A dial lock comprising a lock shaft, a sleeve that is inserted into the outer periphery of the lock shaft and moves in the axial direction together with the lock shaft, and a dial that is inserted into the outer periphery of the sleeve to lock and allow axial movement of the sleeve. Provided in the handle portion,
An engagement portion that engages with the main body case is provided at the end of the lock shaft, and the handle portion is locked to the main body case by providing the engagement portion so as to be freely accessible from the other end of the handle portion. Feature plane handle. An operation portion for moving the lock shaft in the axial direction is disposed so as to protrude from the surface of the handle portion, and the operation portion is disposed at an end portion on the pivot shaft side of the handle portion to lock the handle portion and the main body case. The operation input point in the unlatched state is provided so as to be offset toward the one end side from the rotation center of the pivot shaft in accordance with the movement of the operation portion in the unlatching operation to be released. Plane handle. The flat handle according to claim 1, wherein the dial lock is provided on the other end side of the handle portion that is separated from the operation portion. While providing a biasing member across the handle portion and the handle shaft,
A contact surface facing the seat surface for attaching the urging member of the handle shaft is continuously connected to the handle portion according to a storage state in which the handle portion is stored in the main body case and a raised state caused by the main body case. The flat handle according to any one of claims 1 to 3, wherein the flat handle is provided.

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