JP2770748B2 - Mounting structure of push latch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a push latch device to a flat plate portion of an object to be mounted such as furniture and household electric appliances.

[0002]

2. Description of the Related Art In general, in furniture or home electric appliances having an opening / closing body such as a lid or a door, as a mechanism for holding the opening / closing body in a closed position, for example, as shown in FIG.
Is widely used in which a receiving device 101 is provided in a protruding shape on the back surface of the device, and a push latch device 103 is provided on a flat plate portion 102 of furniture or home electric appliance corresponding to the receiving device 101. The push latch device 103 includes a substantially rectangular parallelepiped casing 104 having an open front end, a slide member 105 mounted on the casing 104 movably back and forth, and a slide member 1.
And a pair of holding arms 106 provided at the front end of the holding member 105 and capable of engaging and disengaging with the receiving member 101, and the sliding member 1
Each time the button 05 is pressed, the locking position where the slide member 105 is housed in the casing 104 and the slide member 1
A locking mechanism (not shown) for switching the position of the opening / closing member 05 to a release position in which the opening / closing member 05 projects from the casing 104, and closes the opening / closing body 100 by holding the receiving member 101 between the pair of holding arms 106 in the locking position. Position, and release the receiving tool 101 from the pair of holding arms 106 in the release position,
The one that makes the opening and closing body 100 openable is employed.

Usually, in order to attach the push latch device 103 to the flat plate portion 102, the push latch device 103
The casing 104 has a hollow substantially rectangular parallelepiped main body 107 to which the slide member 105 is mounted, a flange 108 formed at the front end of the main body 107, and projects laterally from an intermediate portion of the main body 107. Locking piece 1 extending toward flange 108 side
09, and the flat plate portion 10 of furniture or home electric appliances.
2 has a rectangular hole 110 through which the main body 107 is inserted, and the push latch device 103 deforms the locking piece 109 inward until the flange 108 contacts the flat plate 102, and Into the square hole 110, and the flange 10
8 comes into contact with the flat plate 102 and the flat plate 102
9 and the flange 108, the locking piece 109 expands to the side, and the flat plate 102 is held between the front end of the locking piece 109 and the flange 108. It is fixed to the flat plate portion 102 via the stop piece 109.

[0004] By attaching the push latch device 103 to the flat plate portion 102 as described above, the flat plate portion 102 is mounted.
The push latch device 103 can be positioned and held immovably in the longitudinal direction, the longitudinal direction, and the in-plane direction of the flat plate portion 102, respectively. This makes it possible to improve stickiness.

[0005]

However, when the push-latch device is mounted on the flat plate portion as described above, when the push-latch device is replaced due to a failure or breakage, the locking piece may be moved inward. It is necessary to forcibly remove the push latch device from the square hole, which makes the operation very complicated, and the mounting part is deformed or damaged. There is a problem that the flat portion near the latch device is damaged and the appearance is deteriorated. SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting structure of a push latch device in which an object to be mounted such as furniture or a home appliance can be easily attached to and detached from a flat plate portion.

[0006]

According to a first aspect of the present invention, there is provided a push latch device mounting structure for mounting a push latch device having a retractable slide member on a flat plate portion of an object to be mounted such as furniture or home electric appliances. An attachment structure, wherein as a casing of the push latch device, a substantially cylindrical main body on which a slide member is mounted so as to be able to protrude and retract, and an annular flange protruding radially outward from a front end of the main body. And a locking piece that protrudes radially outward from a middle part of the main body and has a gap formed between the flange and the flat part of the object to be mounted. A main body insertion hole through which the main body of the casing is inserted into the flat plate portion of the mounting object, a locking piece insertion hole formed by cutting out a part of the flat plate portion facing the main body insertion hole and a locking piece is inserted, Casing into flat plate through hole It is inserted into the flange portion and the engaging pieces by wear to be constant angular rotation is obtained by forming a locking wall portion for locking the casing in the flat plate portion.

Here, the locking portion is disposed inside the outer periphery of the flange portion in the radial direction of the casing, as in claim 2, and protrudes from the rear end surface of the flange portion as in claim 3. Forming a guide portion comprising a slit, a notch or a groove for guiding the protruding portion to the locking wall portion in a range of a fixed angle around the axis of the main body insertion hole, as in claim 4. In a preferred embodiment, a holding portion that engages with the protruding portion and holds the push latch device in a state of being rotationally restrained with respect to the flat plate portion is formed in the guide portion.

[0008]

In the mounting structure of the push latch device according to the first aspect, when the push latch device is mounted on a flat plate portion of an object to be mounted such as furniture or a home appliance, the push latch device is mounted until the flange contacts the front surface of the flat plate portion. The main body and the locking piece of the casing of the push latch device are inserted into the main body insertion hole and the locking piece insertion hole of the flat plate part, and the casing is rotated by a certain angle in this state, so that the flat plate is formed between the locking piece and the flange. The push latch device is fixed to the flat plate portion by holding the locking wall portion of the portion. In this state, the push latch device is configured such that the main body portion is fitted in the main body insertion hole and positioned in the in-plane direction of the flat plate portion, and the flat plate portion is positioned in the front-rear direction by the flange portion and the locking piece. Fixed to On the other hand, when removing the push latch device from the flat plate portion, the push latch device is rotated by a predetermined angle in the opposite direction to the above, so that the locking piece faces the locking piece insertion hole, and in this state, the push latch device is removed. Will be pulled out from

Here, when the locking portion is disposed inside the outer periphery of the flange portion in the radial direction of the casing, the locking piece insertion hole through which the locking portion is inserted is formed from the outer periphery of the flange portion. The locking piece insertion hole can be closed by the flange portion in a state where the push latch device is assembled to the flat plate portion, and the locking piece insertion hole can be prevented from being exposed to the outside.

According to a third aspect of the present invention, a projection is formed on the rear end surface of the flange, and a guide portion formed of a slit or a notch for guiding the projection to the locking wall is fixed around the axis of the main body insertion hole. When the push latch device is formed in the angle range, the push latch device can be assembled at an appropriate position around the axis of the main body insertion hole.

According to a fourth aspect of the present invention, when the guide portion is formed with a holding portion which engages with the projecting portion and holds the push latch device in a state of being rotationally restrained with respect to the flat plate portion, the engagement between the holding portion and the projecting portion is provided. In some cases, it is possible to prevent the push latch device from being displaced with respect to around the axis of the main body insertion hole due to vibration or the like during use of the push latch device.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to a mounting structure of a push latch device for holding a switch box opening / closing door mounted on a television receiver at a closed position.

As shown in FIG. 1, a switch box 1a is provided on the left side of the lower part of the front surface of a housing 2 of a television receiver (which corresponds to an object to be mounted) 1, and a switch box 1a has a front end opening. An opening / closing door 4 is attached to be openable and closable via a pair of hinge members 3, and a substantially vertical flat plate portion 5 is provided at the rear of the switch box 1a. A switch 6 such as a / video changeover switch and terminals 7 such as an audio output terminal and an image output terminal are provided. Since the configuration of the television receiver 1 itself is not directly related to the present invention, a detailed description thereof will be omitted.

In order to hold the door 4 in the closed position,
As shown in FIGS. 1 to 3, a hook portion 8 a projecting to the left and right sides at the front end portion is provided at a substantially central portion on the free end side of the back surface of the door 4.
A push latch device 10 having a holding arm 15 detachable from the receiver 8 is attached to the flat plate portion 5 of the housing 2.

As shown in FIGS. 2 to 5, the push latch device 10 includes a casing 11 having an open front end, a slide member 12 movably mounted in the casing 11 in the front-rear direction, and a slide member 12. A locking mechanism 13 for locking the casing 11 so as to be able to protrude and retract.

A receiving member 8 is provided at the front end of the slide member 12.
An abutting portion 14 with which the tip of the abutment contacts is formed in a protruding shape, and a pair of left and right holding arms 15 extending forward is formed on both left and right sides of the abutting portion 14.
Claw portion 15a that engages with the hook portion 8a is formed.

The locking mechanism 13 includes a spring member 16 for urging the slide member 12 forward, a heart-shaped guide projection 17 formed on the inner surface of the upper wall of the casing 11, and a base end having the slide member 12. This is a general configuration having a lever member 18 and the like rotatably mounted at the tip and rotatable along the outer periphery of the guide projection 17. Each time the slide member 12 is pushed backward, the drawing 2 and the release member shown in FIG.
Is selectively switched.

In the push latch device 10,
Each time the door 4 is pushed further back from the closed position,
The slide member 12 is pushed rearward at the distal end of the receiving member 8, and the slide member 12 is switched between the locked position and the released position by the locking mechanism 13. And open door 4
When the opening and closing door 4 is pushed backward from the state shown in FIG. 2 in order to hold the sliding member 12 in the closed position, as shown in FIG. The slide member 12 is held in the locking position,
At the front ends of the left and right side plate portions 5 of the casing 11, the left and right holding arms 15 are operated in a direction to approach each other, and the claw portions 15 a of the left and right holding arms 15 are engaged with the hook portions 8 a of the receiving device 8, and are opened and closed. The door 4 will be held in the closed position. When the door 4 is pushed rearward from the state shown in FIG. 3 to open the door 4 in the closed position, as shown in FIG. The holder 8 is moved to the release position and held, and the distal ends of the left and right holding arms 15 are pivoted in a direction away from each other due to the elasticity of the material of the holding arm 15, and the holder 8 is released from the holding arm 15. The opening / closing door 4 is turned forward and opened.

Next, the mounting structure of the push latch device 10 will be described. The casing 11 of the push latch device 10 will be described. As shown in FIGS. 2 to 5, a substantially cylindrical main body 20 in which the slide member 12 is provided is provided. A flat surface 23 for providing the mechanism 13 is formed.
An annular collar 2 projecting outward in the radial direction is provided at the front end of the
1 is formed, and a pair of locking pieces 22 projecting to the left and right sides and extending further forward are provided substantially at the center of the main body 20 in the front-rear direction. A gap 24 through which the flat plate portion 5 can be inserted is formed between the front end of the locking piece 22 and the rear end of the flange 21, and the rear surface of the flange 21 has an angle θ1 with respect to the horizontal plane. (In the example shown, θ1
= 45 °), a pair of protruding portions 25 protruding rearward are formed on a line passing through the center of the casing 11 inclined by 45 °. The angle θ1 may be set to an angle other than 45 °.

As shown in FIGS. 2, 3, 6, and 7, a body insertion hole 30 through which the body 20 of the casing 11 is inserted is formed in the flat plate portion 5 of the switch box 1a. Locking piece insertion holes 31 through which the locking pieces 22 are inserted are formed at both upper and lower ends of the flat plate portion 5 facing 30.
The locking piece insertion hole 31 is disposed inside the outer periphery of the flange 21, and the annular locking wall 32 that receives the rear end face of the flange 21 is formed on the left and right sides of the main body insertion hole 30 in the flat plate 5. A pair of projections 2 are formed on the front half of the locking wall 32.
An arc-shaped guide groove 33 (corresponding to a guide portion) 33 through which the reference numeral 5 is inserted is formed. The guide groove 33 is formed over a range of an angle θ2 (θ2 = 90 ° in the illustrated example), and the left guide is formed. In the vicinity of the upper end of the groove 33 and in the vicinity of the lower end of the right guide groove 33, a holding portion 34 for holding the left and right protrusions 25 at the upper end of the left guide groove 33 and the lower end of the right guide groove 33, respectively. Are formed in a protruding shape. Note that the angle θ2 may be set to an angle other than 90 °. Further, the guide groove 33 and the protruding portion 25, the locking piece 22 and the locking piece insertion hole 31 may be provided only in one set. Further, the guide groove 3
Instead of 3, an arc-shaped slit may be formed in the locking wall portion 32.

Next, the operation of the mounting structure of the push latch device 10 will be described. Push latch device 10
7 is attached to the flat plate portion 5, as shown in FIG. 7, with the push latch device 10 rotated by about 90 ° so that the flat surface 23 faces rightward, the flange portion 21 is attached to the front surface of the flat plate portion 5. Until the contact, the main body portion 20 and the locking piece 22 are inserted into the main body insertion hole 30 and the locking piece insertion hole 31, respectively, and the protrusion 25 is fitted into the guide groove 33. In this state, the push latch device 10 is By rotating about 90 ° in the direction of the arrow, the locking wall portion 32 of the flat plate portion 5 is sandwiched between the left and right locking pieces 22 and the flange portion 21, and the projecting portion 25 is The push latch device 10 is attached to the flat plate portion 5 while being locked at the end.

In this state, in the push latch device 10, the main body portion 20 is fitted in the main body insertion hole 30 and positioned in the in-plane direction of the flat plate portion 5. The casing 11 is positioned, the rotation about the axis of the casing 11 is restricted via the protruding portion 25 and the holding portion 34, and the casing 11 is positioned and fixed to the flat plate portion 5. Further, since the locking piece insertion hole 31 is closed by the flange 21, the appearance of the periphery of the push latch device 10 due to the exposure of the locking piece insertion hole 31 is prevented from being deteriorated.

On the other hand, the push latch device 10 is
When the push-latch device 1 is removed from the push-latch device 1, the push-latch device 10 is rotated about 90 ° in the opposite direction to make the locking piece 22 face the locking-piece insertion hole 31.
0 is pulled out from the flat plate portion 5. As described above, in the mounting structure of the push latch device 10, the push latch device 10 can be securely fixed to the flat plate portion 5 at an accurate position and firmly, and the push latch device 10 can be attached to and detached from the flat plate portion 5. It becomes extremely easy, and the replacement work of the push latch device 10 at the time of failure or breakage becomes easy.

As shown in FIG. 8, a pair of left and right cutouts (not shown) in which the main body insertion hole 30 is cut out in the locking wall 32 over the same area as the guide groove 33, as shown in FIG. (Corresponding to a guide portion) 35, and a projection 36 extending between the main body 20 and the flange 21 is provided in place of the projection 25,
The protrusion 36 may be guided through the notch 35.

Further, as the push latch device 10, a slide member 12 is used instead of the pair of holding arms 15.
Is provided with a push latch device of a type having a magnet attached thereto, and a magnetic attraction plate such as an iron plate is provided in place of the receiving member 8, and the magnet attracts and holds the magnetic attraction plate to hold the opening / closing door 4 in the closed position. Is also good.

In the present embodiment, the present invention is applied to the mounting structure of the push latch device 10 for holding the opening / closing door 4 of the television receiver 1 in the closed position, but a cooling device other than the television receiver 1 or an air conditioner The present invention is similarly applied to an installation structure of a push latch device for holding an opening / closing lid or an opening / closing door of an object to be mounted such as a home appliance such as an audio rack, an furniture such as an audio rack, a control box of a machine tool, etc. It is possible.

Further, in the present embodiment, the present invention is applied to the mounting structure of the push latch device 10 for holding the opening / closing door 4 in the closed position. The present invention can be similarly applied to a mounting structure of a push latch device that holds a switch of a home appliance or a machine tool so as to be able to protrude and retract.

[0028]

According to the mounting structure of the push latch device according to the first aspect, the push latch device can be positioned and fixed to the flat plate portion in the in-plane direction and the front-rear direction of the flat plate portion. Is easy to assemble and remove, and the work of replacing the push latch device in the event of a failure or breakage is facilitated.

According to the second aspect of the present invention, when the push latch device is mounted on the flat plate portion, the locking piece insertion hole is closed by the flange, and the locking piece insertion hole is prevented from being exposed to the outside. Therefore, it is possible to prevent a reduction in the appearance around the push latch device.

According to the third aspect of the present invention, the push latch device has a simple structure in which the protrusion is formed on the rear end surface of the flange portion and the guide portion is formed on the locking wall portion. It is possible to assemble it at an appropriate position around the heart.

According to the structure of the fourth aspect, with a simple structure in which the holding portion is formed in the guide portion, the rotation of the projecting portion around the axis of the main body insertion hole is locked by the holding portion, and the push latch is provided. It is possible to prevent the push latch device from being displaced around the axis of the main body insertion hole due to vibration or the like during use of the device.

[Brief description of the drawings]

[Fig. 1] Front of main part of TV receiver

FIG. 2 is a cross-sectional view of the vicinity of the push latch device and the receiving device.

FIG. 3 is a diagram corresponding to FIG. 2 for explaining the operation of the push latch device.

FIG. 4 is a perspective view of a push latch device.

FIG. 5 is a front view of the push latch device.

FIG. 6 is a front view of the vicinity of the flat plate portion.

FIG. 7 is an explanatory view of an assembling method of the push latch device.

FIG. 8 is a diagram corresponding to FIG. 6, showing a modification of the mounting structure of the push latch device.

FIG. 9 is a cross-sectional view of a conventional push latch device and its vicinity.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Television receiver 2 Housing 3 Hinge member 4 Opening / closing door 5 Flat plate part 6 Switches 7 Terminals 8a Hook part 8 Receiver 10 Push latch device 11 Casing 12 Slide member 13 Locking mechanism 14 Contact part 15 Holding arm 15a Claw part Reference Signs List 16 spring member 17 guide protrusion 18 lever member 20 main body 21 flange 22 locking piece 23 flat surface 24 gap 25 protrusion 30 main body insertion hole 31 locking piece insertion hole 32 locking wall 33 guide groove 34 holding part

Claims (4)

(57) [Claims] 1. A mounting structure for mounting a push latch device having a retractable slide member on a flat plate portion of an object to be mounted such as furniture or home electric appliance, wherein the slide member is a casing of the push latch device. A substantially cylindrical main body mounted so as to be able to protrude and retract, an annular flange protruding radially outward from a front end of the main body, and a flange protruding radially outward from a middle part of the main body. And a locking piece formed with a gap through which the flat portion of the object to be inserted is inserted between the main body and the main body of the casing. The casing is mounted on the flat plate portion through the hole, the locking piece insertion hole formed by cutting out a part of the flat plate portion facing the main body insertion hole, and the locking piece is inserted, and the casing is rotated through a fixed angle through both the insertion holes. And inserted between the collar and the locking piece. The single forming a locking wall portion for engaging the flat plate portion, the attachment structure of the push latch and wherein the. 2. The mounting structure for a push latch device according to claim 1, wherein the locking portion is disposed inside the outer periphery of the flange in the radial direction of the casing. 3. A protruding portion is formed on a rear end surface of the flange portion, and a guide portion formed of a slit, a notch or a groove for guiding the protruding portion to the locking wall portion is provided at a predetermined angle around the axis of the main body insertion hole. 3. The method according to claim 1, wherein the first and second parts are formed in the range of
3. The mounting structure of the push latch device according to claim 1. 4. The push latch according to claim 3, wherein a holding portion that engages with the protruding portion and holds the push latch device in a state of being rotationally restrained with respect to the flat plate portion is formed in the guide portion. Equipment mounting structure.