JP5957565B1 - Door lock handle device - Google Patents

Abstract

A door lock handle device capable of closing a door regardless of the rotation position of an operation handle. When a door 52 is to be closed in a state where an operation handle 5 is in a half-open position or a closed position, a conical slope 10d at the rear part of a latch body 7 comes into sliding contact with a sliding surface 9b of an engaging pin 9. Since the engagement pin 9 is pushed up to the non-engagement position, the latch body 7 does not collide with the engagement pin 9 and both are not subjected to excessive stress. When the latch body 7 can pass through the engagement pin 9, simultaneously with the passage, the engagement pin 9 protrudes to the engagement position by the spring 9a and engages with the first or second engagement recess 10a, 10b. From this state, the door 52 cannot be opened unless the operation handle 5 is rotated to the open position. [Selection] Figure 2

Description

  The present invention relates to a door lock handle device used for opening and closing a door in a steam oven or the like.

  In a door lock handle device used in cooking equipment such as a steam oven, it is necessary to lock the door in a sealed state by tightening the door via a gasket so that steam and hot air in the casing do not escape. In this type of door lock handle device, a latch body is provided on a handle shaft that penetrates the door, and a receiver body that engages with the latch body is provided on the housing side. By the forward and reverse rotation, the latch body and the metal receiver are engaged and disengaged. In the lock handle device described in Patent Literature 1, the metal receiver includes an engagement pin that extends toward the axis of the handle shaft. The latch body is structured to engage with the back side of the engagement pin in the closed position of the operation handle. Therefore, when sealing the door, it is necessary to close the door with the operation handle in the open position, and then rotate the operation handle to the closed position to tighten the gasket.

JP 2009-29936 A

In the above conventional lock handle device, the door cannot be closed unless the operation handle is always placed in the open position, and if the door is accidentally closed while the operation handle is placed in the closed position, the latch body becomes the receiver. There is a risk of damaging it by strong impact.
Therefore, the present invention provides a lock handle device capable of sealing the opening by closely contacting the door with the peripheral frame of the opening of the casing while compressing the gasket only by rotating the handle. The purpose of this invention is to provide a product that does not cause damage even when the door is closed.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the door lock handle device 1 of the present invention includes a handle assembly 2 attached to a door 52 and a metal receiving assembly 3 attached to a housing 51. The handle assembly 2 includes a fixed seat 4, an operation handle 5, a handle shaft 6, and a latch body 7. The fixed seat 4 is fixed to the front side of the door 52. The operation handle 5 is rotatably supported by the fixed seat, and rotates forward and backward between the open position, the half-open position, and the closed position. The handle shaft 6 is fixed to the operation handle 5 at the front end side, penetrates the door 52 vertically, and protrudes to the back side of the door 52 at the rear end side. The latch body 7 is fixed to the rear end side of the handle shaft 5, engages with the receiver assembly 3 in the closed position of the operation handle 5, and disengages from the receiver assembly 3 in the open position. The metal receiving assembly 3 includes a mounting seat 8 fixed to the housing 51 and an engagement pin 9 extending from the mounting seat 8 toward the axis of the handle shaft 5 in the radial direction. The latch body 7 includes an engaging portion 10 that extends in a radial direction from the distal end portion of the handle shaft 6 in a generally fan shape concentric with the handle shaft 6. On the front side of the engaging portion 10, a first engaging recess 10 a and a second engaging recess 10 b that engage with the back side of the engaging pin 9 of the metal receiving assembly 3, and both engaging recesses 10 a and 10 b A raised portion 10c that is located between and protrudes forward through a slope is formed side by side on the concentric circle with the handle shaft 6. The first engagement recess 10a is disposed behind the second engagement recess 10b. On the back surface side of the engaging portion 10, a conical inclined surface 10 d that is inclined forward from the center toward the outer peripheral side is formed. The engagement pin 9 of the metal receiving assembly 3 has an engagement position that protrudes to engage with the first or second engagement recess 10 a or 10 b of the engagement portion 10 of the latch 7 and the engagement portion 10. It can freely move forward and backward in the axial direction between the non-engagement position retracted radially outward from the outer periphery, is urged to the engagement position and supported by the mounting seat 8, and the inclined surface of the latch body 7 abuts on the periphery of the tip portion. When this is done, a sliding surface 9b for retracting the engaging pin 9 to the non-engaging position is provided. When the operation handle 5 is in the half-open position, the door 52 is arranged in a half-open state with respect to the housing 51 by engaging the engagement pin 9 with the first engagement recess 10 a of the latch 7. When the is in the closed position, the engagement pin 9 is engaged with the second engagement recess 10 b of the latch 7 to place the door 52 in a sealed state with respect to the housing 51.

  The door lock handle device 1 of the present invention can seal the opening by bringing the door 52 into close contact with the opening peripheral frame of the casing 51 while compressing the gasket only by a simple rotation operation of the operation handle 5. Even if the operation handle 5 is operated to close the door 52 at any rotational position, the latch body 7 does not collide with the engagement pin 9.

It is a front view of the lock handle device of the door concerning the present invention. It is a side view of the lock handle apparatus of FIG. It is a side view of the handle assembly in the lock handle apparatus of FIG. It is a rear view of the handle assembly in the lock handle apparatus of FIG. It is a top view of the handle assembly in the lock handle apparatus of FIG. It is VI-VI sectional drawing of FIG. It is sectional drawing of the metal receiving assembly in the lock handle apparatus of FIG. FIG. 8 is a side view of the metal receiving assembly of FIG. 7. It is a bottom view of the metal receiving assembly of FIG.

Embodiments of the present invention will be described with reference to the drawings.
The lock handle device 1 is for opening and closing the door 52 of the casing 51 such as a steam oven. The gasket 52 between the casing 51 and the door 52 is compressed to seal the opening. It can be locked to the housing 51.

  1 and 2, the lock handle device 1 includes a handle assembly 2 attached to a door 52 for opening and closing an opening of the housing 51, and a receiver attached to the housing 51 side so as to engage with and disengage from the handle assembly 2. And a gold assembly 3.

  The handle assembly 2 includes a fixed seat 4, an operation handle 5, a handle shaft 6, and a latch body 7. The fixed seat 4 is fixed to the front side of the door 52.

  The operation handle 5 is supported by the fixed seat 6 so as to be rotatable along a plane parallel to the front surface of the door 52, and rotates forward and backward between an open position, a half-open position, and a closed position that are separated from each other by a predetermined rotation angle. .

  The handle shaft 6 has a front end fixed to the operation handle 5, passes through the door 52 vertically, and a rear end protrudes to the back side of the door 52.

  The latch body 7 is fixed to the rear end side of the handle shaft 6, engages with the receiver assembly 3 in the closed position of the operation handle 5, and comes off from the receiver assembly 3 in the open position.

  The metal receiving assembly 3 includes a mounting seat 8 fixed to the housing 51 and an engagement pin 9 extending from the mounting seat 8 toward the axis of the handle shaft 6 in the radial direction.

  The latch body 7 includes an engagement portion 10 that extends in a radial direction from the distal end portion of the handle shaft 6 in a generally fan shape concentric with the handle shaft 6. On the front side of the engaging portion 10, the first engaging recess 10 a and the second engaging recess 10 b that are engaged with the back side of the engaging pin 9, and between the engaging recesses 10 a and 10 b, the inclined surface A raised portion 10 c that protrudes forward via the handle shaft 6 is formed side by side on the circumference concentric with the handle shaft 6. The first engagement recess 10a is disposed behind the second engagement recess 10b. On the back surface side of the engaging portion 10, a conical inclined surface 10 d that is inclined forward from the center toward the outer peripheral side is formed.

  The mounting seat 8 of the metal receiving assembly 3 includes a mounting seat body 11 that is fixed to the housing 51 and a support body 12 that supports the engagement pin 9. The support body 12 is fixed to the main body 11 so that the position in the front-rear direction can be adjusted, whereby the compression amount of the gasket at the sealing position of the door 52 can be adjusted. That is, the mounting seat body 11 includes a frame wall portion 11a having a substantially rectangular tube shape, and a pair of left and right fixing plate portions 11b that extend right and left at right angles from the rear end portion of the frame wall portion 11a and are screwed to the housing 51. It comprises. The lower wall 11c that constitutes the frame wall portion 11a has a pair of long holes 11d that are long in the front-rear direction, and the lower surface of the lower wall 11c constitutes an engagement surface 11e having a number of engagement grooves extending in the left-right direction. . The upper wall 11f constituting the frame wall portion 11a has a screw insertion hole 11g.

  The support 12 includes a square cylindrical leg portion 12a that is movably fitted in the frame wall portion 11a so as to be movable in the front-rear direction, and a pin holding portion 12b that holds the engagement pin 9 movably in the axial direction. To do. The lower wall 12c of the leg portion 12a has a screw hole 12d facing the elongated hole 11d, and the upper wall 12e has a longitudinal hole 12f facing the screw insertion hole 11g. The bolt 13 is screwed into the screw hole 12d through the long hole 11d, and the bolt 14 is inserted into the long hole 12f through the screw insertion hole 11g. The bolt 14 is screwed with the nut 15 inside the leg portion 12a. The nut 15 is in the groove 12g in the front-rear direction of the upper wall 12e and is prevented from rotating, and can move with the bolt 14 along the groove 12g. The pin holding part 12b has a pin holding space 12h that opens downward and extends in the vertical direction, and the engagement pin 9 is inserted into the pin holding space 12h via a spring 9a.

  The adjusting plate 16 is joined to the engaging surface 11e of the lower wall 11c of the mounting seat body 11 with the bolt 13. The adjustment plate 16 has a corresponding engagement surface 16a having a number of engagement grooves that engage with the engagement surface 11e of the lower wall 11c. The bolt 13 passes through the adjustment plate 16 and the long hole 11d and is screwed into the screw hole 12d. Therefore, by loosening the bolts 13 and 14, the engagement pin 9 can be moved in the front-rear direction together with the support 12 with respect to the mounting seat body 11, and the bolts 13 and 14 are tightened at appropriate positions to adjust the adjustment plate. By engaging 16 with the engaging surface 11e of the lower wall 11c, it can be fixed to the mounting seat body 11.

  The engaging pin 9 is supported by the mounting seat 8 and can move forward and backward in the axial direction between an engaging position protruding downward from the mounting seat 8 and a non-engaging position pushed into the mounting seat 8. It is biased to the engagement position at 9a. The engagement pin 9 engages with the engagement portion 10 of the latch 7 at the engagement position, and retracts radially outward from the outer periphery of the engagement portion 10 at the non-engagement position. When the inclined surface 10d of the latch body 7 comes into contact with the peripheral edge of the distal end portion of the engaging pin 9, the sliding is made to slide with respect to the inclined surface and retract the engaging pin 9 to the non-engaging position. A surface 9b is provided.

  When the operation handle 5 is in the half-open position, the engagement pin 9 engages with the first engagement recess 10 a of the latch body 7, and the door 52 is arranged in a half-open state with respect to the housing 51. When the operation handle 5 is in the closed position, the engagement pin 9 engages with the second engagement recess 10b of the latch body 7, and the door 52 is sealed with respect to the housing 51 in a state where the gasket is compressed. When the operation handle 5 is in the open position, the latch body 7 can be disengaged from the engagement pin 9 and the door 52 can be opened. In the course of rotating the operation handle 5 from the closed position to the open position, the high-temperature and high-pressure steam in the housing 51 can escape at this position and the door 52 can be fully opened safely.

  When the door 52 is to be closed in a state where the operation handle 5 is in the half-open position or the closed position, the conical inclined surface 10d at the rear portion of the latch body 7 comes into sliding contact with the sliding surface 9b of the engaging pin 9, and the engaging pin 9 Is pushed up to the disengaged position, so that excessive stress due to the collision is not applied. When the door is closed at the half-open position, the latch member 7 can pass through the engagement pin 9 without obstructing the path. In this case, simultaneously with the passage, the engagement pin 9 protrudes to the engagement position by the spring 9a, engages with the first engagement recess 10a, and the door 52 is held in a half-open state. If the operation handle 5 is further rotated to the closed position, the gasket is compressed and the door 52 is hermetically locked. From the half-open position and the closed position, the door 52 cannot be opened unless the operation handle 5 is rotated to the open position.

  Although not shown, a detent mechanism that holds the operation handle 5 is provided between the fixed seat 4 and the operation handle 5 at each of the rotational positions of the open position, the half-open position, and the closed position.

DESCRIPTION OF SYMBOLS 1 Lock handle apparatus 2 Handle assembly 3 Receptacle assembly 4 Fixed seat 5 Operation handle 6 Handle shaft 7 Hatch body 8 Mounting seat 9 Engagement pin 9a Spring 9b Sliding surface 10 Engagement part 10a 1st engagement recessed part 10b Second engaging recess 10c Raised portion 10d Conical slope 11 Mounting seat body 11a Frame wall portion 11b Fixing plate portion 11c Lower wall 11d Long hole 11e Engaging surface 11f Upper wall 11g Screw insertion hole 12 Support body 12a Leg portion 12b Pin Holding portion 12c Lower wall 12d Screw hole 12e Upper wall 12f Long hole 12g Groove 11h Pin holding space 13 Bolt 14 Bolt 15 Nut 16 Adjustment plate 51 Housing 52 Door

Claims (3)

A lock handle device for a door attached to a housing so as to seal an opening of the housing via a gasket,
A handle assembly attached to the door, and a receiving assembly attached to the housing,
The handle assembly includes a fixed seat fixed to the front side of the door and an open position / half-open position supported by the fixed seat so as to be rotatable along a plane parallel to the front surface of the door and spaced apart from each other by a predetermined rotation angle. An operation handle that rotates forward and backward between the position and the closed position, a handle shaft that is fixed to the operation handle on the front end side, penetrates the door vertically, and the rear end side projects to the back side of the door, and a rear end side of the handle shaft A latch body fixedly engaged with the receiver assembly in the closed position of the operating handle and disengaged from the receiver assembly in the open position;
The receiver assembly includes a mounting seat fixed to the housing, and an engagement pin extending in a radial direction from the mounting seat toward the axis of the handle shaft,
The latch body includes an engaging portion extending in a radial direction from the tip end portion of the handle shaft in a substantially fan shape concentric with the handle shaft,
On the front side of the engagement portion, a first engagement recess and a second engagement recess that engage with the back side of the engagement pin, and a bulge that protrudes forward through an inclined surface between the engagement recesses. Are formed side by side concentrically with the handle shaft,
The first engagement recess is disposed rearward of the second engagement recess,
On the back side of the engaging portion, a conical slope that is inclined forward from the center toward the outer peripheral side is formed,
The engagement pin has an engagement position protruding so as to engage with the first or second engagement recess of the engagement portion and a non-engagement position retracted radially outward from the outer periphery of the engagement portion. It can be moved forward and backward in the axial direction and is urged to the engagement position and supported by the mounting seat, and the engagement pin is retracted to the non-engagement position when the inclined surface of the latch body comes into contact with the peripheral edge of the tip portion. Comprises a sliding surface that slides against the slope,
When the operation handle is in the half-open position, the door is placed in a half-open state with respect to the housing by engaging the engagement pin with the first engagement recess of the latch body, and the operation handle is in the closed position. A door lock handle device, wherein the door is hermetically disposed with respect to the housing by engaging an engagement pin with the second engagement recess of the latch body.   The mounting seat of the metal receiving assembly includes a mounting seat body fixed to the housing and a support body that supports the engagement pin, and the support body can be adjusted in the position in the front-rear direction with respect to the body. 2. The door lock handle device according to claim 1, wherein the compression amount of the gasket in the closed position of the door is adjustable.   3. The door according to claim 1, wherein a detent mechanism is provided between the fixed seat and the operation handle to hold the operation handle at each of an open position, a half-open position, and a closed position. Lock handle device.

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