CN207905531U - A kind of door latch structure of household electrical appliance - Google Patents

Abstract

The utility model is related to a kind of door latch structure of household electrical appliance, including locking bar, there is first end the mounting portion that can be mounted in household electrical appliance door body, second end to have latch hook；Pedestal is provided with the opening passed through for locking bar；Mounting bracket, first end are articulated on pedestal；First elastic component makes the second end of mounting bracket remain to the close trend of pedestal；Idler wheel can be rotatably arranged in mounting bracket, be provided with to turn to latch hook and fore shaft front side wall for the fore shaft that latch hook is caught in, idler wheel and offset on the periphery wall of idler wheel and realized under state and lock, and the fore shaft front part that idler wheel turns to, which exits, to be realized under latch hook state and unlock；Second elastic component, the trend for making idler wheel remain that fore shaft is rotated to pedestal direction；Shrapnel, the hook with the bending of way roller direction, the hook cooperate to limit the turned position of idler wheel by the periphery wall of position limiting structure and idler wheel.The utility model becomes one door lock and gate, reduces door lock volume, has saved assembly space.

Description

A kind of door latch structure of household electrical appliance

Technical field

The utility model is related to a kind of door latch structure of household electrical appliance, especially a kind of machine of the effectively save assembly space of energy Tool door latch structure.

Background technology

Household electrical appliance with door lock be it is a kind of preventing the mechanism that door is opened easily easily so that electric appliance is protected under shutdown state The stability demonstrate,proved leakproofness, keep working chamber vivo environment.Door lock is generally divided into mechanical and two kinds of electrodynamic type, mechanical door lock General structure is complicated, and manufacturability is poor, and there are certain requirements to installation volume；Electrodynamic type door lock general cost costly, and Stability is bad, and it is dead or close not first-class situation to be susceptible to door lock in use.

Application publication number is the Chinese patent application of CN107060532A《Cooking appliance and its door lock assembly》(application number： CN201710147115.7 a kind of structure) is disclosed, door lock assembly includes interlock bracket；Lock core, lock core lock a door position and It is movably located in interlock bracket between releasing position；Reset assembly, reset assembly include：Oil cylinder, oil cylinder are mounted on interlocking On holder；Piston, piston are movably located in oil cylinder, and piston limits interconnected the first chamber and second in oil cylinder Chamber, piston are connected with the piston rod for stretching out oil cylinder and connecting lock core；Spring, spring are located in oil cylinder, spring respectively with oil cylinder and Piston is connected.Above-mentioned door lock assembly is resetted using the elastic force driving lock core of spring by the way that spring is arranged in oil cylinder, can pass through tune Save the reset speed that spring force adjusts lock core, adjusting door closing speed.

Above-mentioned existing door lock is mostly to regard door lock and gate as two separate structures, which not only adds cost, Cause assembly space larger, and then influences the overall volume and manufacturing cost of household motor.

Utility model content

For the current state of the art, the technical problem to be solved by the utility model is to provide a kind of by door lock and gate Become one to save the door latch structure of the household electrical appliance of assembly space.

Technical solution is used by the utility model solves above-mentioned technical problem：A kind of door latch structure of household electrical appliance, The household electrical appliance have main part and the capable of opening and closing door body in the main part, it is characterised in that：Including

Locking bar, the first end of the locking bar have the mounting portion that can be mounted in household electrical appliance door body, the second end of the locking bar With latch hook；

Pedestal is provided with the opening passed through for locking bar；

Mounting bracket is formed with installation space, the first end of the mounting bracket on rear side of pedestal and between pedestal It is articulated on pedestal；

First elastic component between the pedestal and the second end of mounting bracket and makes the second end of mounting bracket always It keeps to the close trend of pedestal；

Idler wheel can be rotatably arranged in mounting bracket, be provided on the periphery wall of the idler wheel can for the fore shaft that latch hook is caught in, The idler wheel, which turns to latch hook and fore shaft front side wall and offsets, to be realized under state and locks, and the idler wheel turns to fore shaft front part and moves back Go out and realizes unlocking under latch hook state；

Second elastic component, the trend for making the idler wheel remain that fore shaft is rotated to pedestal direction；And

Shrapnel, which is set on rear side of mounting bracket and first end is movably connected in mounting bracket, and the of the shrapnel There is the hook of way roller direction bending, the hook to be cooperated to rolling by the periphery wall of position limiting structure and idler wheel at two ends The turned position of wheel is limited.

In the above scheme, the position limiting structure includes third elastic component and the convex block on idler wheel periphery wall, described Convex block is formed with the card slot that can coordinate limit with hook, side wall the of the convex block close to fore shaft close to the side wall first end of fore shaft Two ends are formed as guide surface, and side wall of the convex block far from fore shaft is configured to from above-mentioned first end to second end gradually along idler wheel week To the inclined-plane of extension, the third elastic component makes the hook of shrapnel remain that is moved from above-mentioned first end to second end becomes Gesture.Above structure locking bar, the second elastic component cooperation under with shrapnel cooperation realize locking and unlocking condition, clever structure, Operation facility.

Preferably, the idler wheel be formed on the periphery wall of mounting bracket second end circumferentially extended along idler wheel it is recessed Area is fallen into, which is connected with the card slot.Using the structure, in order to keep the hook of shrapnel easy during lock operation In being caught in card slot.

Preferably, the card slot is configured to V-arrangement, and non-depressed area part is stretched into card slot and and V on the idler wheel periphery wall The medial surface of shape card slot is mutually connected；Angle between the guide surface and convex block peripheral surface and coupled idler wheel periphery wall is equal For obtuse angle.The stability of lock-out state can be improved in the notch of V-arrangement, and hook is avoided to be skidded off from card slot, improves lock-out state Stability；And the non-depressed area part on the idler wheel periphery wall stretched into card slot slides to guide surface from card slot for hook and provides Condition, when hook slides to the second end on can further glide in idler wheel rotary state on guide surface lug surface and inclined-plane It offsets, at this point, being in unlocking condition, prevents idler wheel rotation excessive.

As an improvement, the rear wall of the idler wheel fore shaft extend outwardly along fore shaft length direction and with the idler wheel that accordingly extends Ring wall collectively forms the extension that length is more than fore shaft front side wall.The structure can reduce the rotational angle of idler wheel, easily when unlocking It is detached from fore shaft, quickly unlocking in making the latch hook of locking bar；Idler wheel can also be formed upwards, backward when locking bar is pushed into fore shaft Thrust, be easy and fast to realize locking.

For the ease of connection, first elastic component is spring, is provided with and extends back on the rear wall of the pedestal Positioning column, first elastic component is placed on the periphery of the positioning column, the first end of first elastic component on rear side of pedestal Wall is connected, and the second end of first elastic component is connected with the second end of mounting bracket.

For the ease of assembly, the first end of the pedestal is provided with the linking arm to extend back, and the of the mounting bracket One end is articulated on the linking arm.

For the ease of assembly, the shaft of parallel base rear wall arrangement, the shaft are provided in the middle part of the mounting bracket Idler wheel can be rotatably arranged in mounting bracket across the idler wheel center.Second elastic component is torsional spring, the pedestal Rear wall on be provided with the limited block close to open edge arrangement, be provided on the lateral surface of the idler wheel and radially extend Limiting slot is placed on shaft periphery in the middle part of the torsional spring, and the first end of the torsional spring is mutually blocked with limited block, and the of the torsional spring Two ends are placed in the trend to make idler wheel remain that fore shaft is rotated to pedestal direction in limiting slot.

Preferably, the third elastic component is spring, is provided on the side wall of the close guide surface of the mounting bracket First links up with, and the second hook is provided on the shrapnel, the first end of the third elastic component is connected with the first hook, described The second end of third elastic component is connected with the second hook.

Preferably, the first end of the mounting bracket is provided with the mounting plate to extend back, and the first end of the shrapnel is lived It is dynamic to be connected on the mounting plate.The top of the mounting plate has inserted sheet, corresponding, has on the shrapnel and is passed through for inserted sheet Socket, and the socket expands to form the resigning sky that the hook that can make shrapnel radially twists back and forth along idler wheel respectively to both ends from middle part Between.Using the above structure so that the hook of shrapnel second end is easy to be caught in card slot or be slided on guide surface from card slot.

Compared with prior art, the utility model has the advantage of：The locking bar of the utility model door lock can be mounted on door body The other parts at the back side, door lock can be embedded in household electrical appliance main part as a whole, when lock-out state, the hook of shrapnel Holding prevents idler wheel from rotating in card slot, the latch hook of locking bar be located in the fore shaft of idler wheel across pedestal opening and with the front side of fore shaft Wall offsets；When unlocking, push door body, the rear wall of locking bar end and idler wheel fore shaft offset and after pushing rolling wheels, to overcome the The elastic force of one elastic component makes mounting bracket, idler wheel rotate backward around mounting bracket first end, and during being somebody's turn to do, idler wheel can be in locking bar Promotion under rotate backward certain angle so that shrapnel hook temporarily cancels the limit to idler wheel, idler wheel with position limiting structure cooperation It is rotated forward under the effect of the second elastic component, until the latch hook of locking bar is detached from idler wheel fore shaft, at this point, door lock is in the open state, First elastic component drives idler wheel and mounting bracket to reset, and the hook on shrapnel is realized with position limiting structure cooperation to scroll wheel positions again Limit, prevent idler wheel rotation excessive；When locking a door, door body is pushed, latch hook enters in fore shaft and further pushing rolling wheels backward, makes Idler wheel overcomes the second elastic component elastic force to rotate backward, and coordinates again to idler wheel position with position limiting structure when turning to the hook on shrapnel It sets when being limited, the front side wall of latch hook and idler wheel fore shaft on locking bar offsets, and realizes locking.The utility model is by door lock and door Control becomes one, and substantially reduces door lock volume, has saved assembly space, and the door lock of the utility model tightly leads in operation Pushing door body is crossed to achieve that locking and unlock, it is easy to use.

Description of the drawings

Fig. 1 is the structural schematic diagram (lock-out state) of the utility model embodiment；

Fig. 2 is the structural schematic diagram (unlocking condition) of the utility model embodiment；

Fig. 3 is the structural schematic diagram of another angles of Fig. 1；

Fig. 4 is the structural schematic diagram of another angles of Fig. 2；

Fig. 5 is the structural schematic diagram of the another angles of Fig. 1；

Fig. 6 is the sectional view of Fig. 1；

Fig. 7 is the sectional view of Fig. 2；

Fig. 8 is the structural schematic diagram of idler wheel in the utility model embodiment；

Fig. 9 is the structural schematic diagram of another angles of Fig. 8；

Figure 10 is the structural schematic diagram of shrapnel in the utility model embodiment.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing embodiment.

As shown in Fig. 1~10, there is the household electrical appliance of the present embodiment main part and door body, main part can have in one Chamber, door body edge are hinged in the open edge of main part inner cavity.The door latch structure of the household electrical appliance of the present embodiment is by door lock Become one with gate, including locking bar 1, pedestal 2, mounting bracket 3, the first elastic component 10, idler wheel 4, the second elastic component 20 and Shrapnel 5, wherein locking bar 1 can be mounted on the door body back side, and the first end of locking bar 1 has the peace that can be mounted in household electrical appliance door body The second end in dress portion 11, locking bar 1 extends to household electrical appliance with main part and with latch hook 12, pedestal 2 and other structures structure The opening 21 passed through for locking bar 1 is provided on pedestal 2 in the main part of household electrical appliance at an entirety.

Mounting bracket 3 is set to 2 rear side of pedestal and is formed with installation space 100 between pedestal 2, and the first end of pedestal 2 is set It is equipped with the linking arm 22 to extend back, the first end of mounting bracket 3 is articulated on the linking arm 22.The rear side of 2 second end of pedestal The positioning column 23 to extend back is provided on wall, the first elastic component 10 is spring, and the first elastic component 10 is placed on the positioning column 23 Periphery, the first end of the first elastic component 10 is connected with 2 rear wall of pedestal, the second end and mounting bracket of the first elastic component 10 3 second end is connected, to make the second end of mounting bracket 3 remain to the close trend of pedestal 2.

Idler wheel 4 can be rotatably arranged in mounting bracket 3.Specifically, after the middle part of mounting bracket 3 is provided with parallel base 2 The shaft 200 of side wall arrangement, the shaft 200 pass through 4 center of idler wheel that idler wheel 4 is set in mounting bracket 3.The periphery wall of idler wheel 4 On be provided with to turn to latch hook 12 and 41 front side wall of fore shaft for the fore shaft 41 that latch hook 12 is caught in, idler wheel 4 and offset and realize under state and lock Fixed, 41 front part of fore shaft that idler wheel 4 turns to, which exits, realizes unlocking under 12 state of latch hook.Second elastic component 20 is torsional spring, pedestal 2 Rear wall on be provided with the limited block 24 close to 21 edges of opening arrangement, be provided on the lateral surface of idler wheel 4 and radially extend Limiting slot 42, be placed on 200 periphery of shaft in the middle part of torsional spring, first end and the 24 phase card of limited block of torsional spring, the second of torsional spring End is placed in the trend in limiting slot 42 to make idler wheel 4 remain that fore shaft 41 is rotated to 2 direction of pedestal.

Shrapnel 5 is set to 3 rear side of mounting bracket and first end is movably connected in mounting bracket 3, and the second end of shrapnel 5 has The hook 51 of 4 direction of way roller bending, the hook 51 are cooperated by the periphery wall of position limiting structure a and idler wheel 4 to rolling The turned position of wheel 4 is limited.Specifically, the first end of mounting bracket 3 is provided with the mounting plate 31 to extend back, shrapnel 5 First end be movably connected on the mounting plate 31.The top of mounting plate 31 has inserted sheet 311, corresponding, has on shrapnel 5 and supplies The socket 52 that inserted sheet 311 passes through, and the socket 52 expands to form the hook 51 that can make shrapnel 5 along idler wheel respectively to both ends from middle part 4 it is radial twist back and forth allow bit space.

Above-mentioned position limiting structure a includes third elastic component 30 and the convex block 43 on 4 periphery wall of idler wheel, and convex block 43 is close to lock The side wall first end of mouth 41 is formed with the card slot 431 that can coordinate limit with hook 51, side wall second of the convex block 43 close to fore shaft 41 End is formed as guide surface 432, and side wall of the convex block 43 far from fore shaft 41 is configured to from above-mentioned first end to second end gradually along idler wheel 4 The inclined-plane 433 of circumferentially extending.Third elastic component 30 is spring, and the is provided on the side wall of the close guide surface 432 of mounting bracket 3 One links up with 32, and the second hook 53 is provided on shrapnel 5, and the first end of third elastic component 30 is connected with the first hook 32, third The second end of elastic component 30 53 is connected with the second hook, so that the hook 51 of shrapnel 5 is remained from above-mentioned first end to the The trend of two ends movement.Idler wheel 4 is formed with the recess circumferentially extended along idler wheel 3 on the periphery wall of 3 second end of mounting bracket Area 44, the depressed area 44 are connected with card slot 431.Card slot 431 is configured to V-arrangement, and non-depressed area part is stretched on 4 periphery wall of idler wheel Mutually it is connected in card slot 431 and with the medial surface of V-arrangement card slot 431；Guide surface 432 and 4 peripheral surface of convex block and coupled idler wheel 4 Angle between periphery wall is obtuse angle.The stability of lock-out state can be improved in 431 structure of card slot of V-arrangement, avoids hook 51 certainly It is skidded off in card slot 431, improves the stability of lock-out state；And stretch into the non-depressed area portion on 4 periphery wall of idler wheel in card slot 431 Be divided into hook 51 and slide to guide surface 432 from card slot 431 and provide condition, when hook 51 slides to can be into one on guide surface 432 Step glided 4 surface of convex block in 4 rotary state of idler wheel and the second end on inclined-plane 433 offsets, at this point, it has been in unlocking condition, Prevent idler wheel 4 from rotating excessively.The rear wall of 4 fore shaft 41 of idler wheel extend outwardly along 41 length direction of fore shaft and with the rolling that accordingly extends It takes turns 4 ring walls 45 and collectively forms the extension 46 that length is more than 41 front side wall of fore shaft.And the edge at the edge of fore shaft 41 and convex block 43 Distance in 4 circumferential direction of idler wheel is less than or equal to half of circumference.When unlocking, the above-mentioned rotational angle for reducing idler wheel 4 is easy to make The latch hook 12 of locking bar 1 is detached from fore shaft 41, quickly unlocking；Can also when locking bar 1 is pushed into fore shaft 41 to idler wheel 4 formed to Upper, thrust backward is easy and fast to realize locking.

Using the door latch structure of the present embodiment, when door lock is in the lock state, 51 holding of hook of shrapnel 5 is in card slot Prevent idler wheel 4 from rotating in 431, the latch hook 12 of locking bar 1 pass through the opening of pedestal 1 11 be located in the fore shaft 41 of idler wheel 4 and with fore shaft 41 Front side wall offset；When unlocking, push door body, the rear wall of 1 end of locking bar and 4 fore shaft 41 of idler wheel offset and after pushing rolling wheels 4, To overcome the elastic force of the first elastic component 10 that mounting bracket 3, idler wheel 4 is made to rotate backward around 3 first end of mounting bracket, the process In, idler wheel 4 understands the certain angle that rotate backward under the promotion of locking bar 1 so that 5 hook 51 of shrapnel is under the effect of third elastic component 30 It is detached from card slot 431 to slide on guide surface 432, idler wheel 4 is rotated in the effect of the second elastic component 20 to 2 direction of pedestal, and hook 51 is slided One end that convex block 43 corresponds to guide surface 432 to inclined-plane 433 is crossed, at this point, fore shaft 41 is detached from for the latch hook 12 of locking bar 1, the first bullet Property part 10 drive idler wheel 4 and mounting bracket 3 to reset, hook 51 prevents idler wheel 4 from rotating excessively with the mutually limit of inclined-plane 433, door lock It is in the open state；When locking a door, door body is pushed, latch hook 12 enters in fore shaft 41 and further pushing rolling wheels 4 backward, makes idler wheel 4 20 elastic force of the second elastic component is overcome to rotate backward, during being somebody's turn to do, the hook 51 on shrapnel 5 is leaned on along inclined-plane 433 to 431 direction of card slot Closely until being caught in card slot 431, the position of idler wheel 4 is limited, at this point, the angle that idler wheel 4 turns over makes the latch hook 12 of locking bar 1 Limit realizes the locking of door lock in the fore shaft 41 of idler wheel 4.

It should be noted that the indicating arm 6 being connected with idler wheel 4 can also be arranged in the present embodiment, which can roll It takes turns and shift in position occurs in 4 rotation processes, the end of indicating arm 6 can be connect with control systems with indicative function such as sound, User is reminded under door lock locking or unlocking condition, it is excessive to avoid operation, influence user experience.

Claims (12)

1. a kind of door latch structure of household electrical appliance, the household electrical appliance have main part and capable of opening and closing are set to the main part On door body, it is characterised in that：Including

Locking bar (1), the first end of the locking bar (1) have the mounting portion (11) that can be mounted in household electrical appliance door body, the locking bar (1) Second end have latch hook (12)；

Pedestal (2) is provided with the opening (21) passed through for locking bar (1)；

Mounting bracket (3) is set on rear side of pedestal (2) and is formed between pedestal (2) installation space (100), the installation branch The first end of frame (3) is articulated on pedestal (2)；

First elastic component (10) is set between the pedestal (2) and the second end of mounting bracket (3) and makes mounting bracket (3) Second end is remained to the close trend of pedestal (2)；

Idler wheel (4) can be rotatably arranged in mounting bracket (3), and being provided on the periphery wall of the idler wheel (4) can block for latch hook (12) The fore shaft (41) entered, the idler wheel (4), which turns to latch hook (12) and fore shaft (41) front side wall and offsets, to be realized under state and locks, described Fore shaft (41) front part that idler wheel (4) turns to, which exits, realizes unlocking under latch hook (12) state；

Second elastic component (20), the trend for making the idler wheel (4) remain that fore shaft (41) is rotated to pedestal (2) direction；And

Shrapnel (5), which is set on rear side of mounting bracket (3) and first end is movably connected in mounting bracket (3), described There is the second end of shrapnel (5) hook (51) of way roller (4) direction bending, the hook (51) to pass through position limiting structure (a) and rolling The periphery wall of wheel (4) cooperates to limit the turned position of idler wheel (4).

2. the door latch structure of household electrical appliance according to claim 1, it is characterised in that：The position limiting structure (a) includes the Three elastic components (30) and the convex block (43) on idler wheel (4) periphery wall, side wall the of the convex block (43) close to fore shaft (41) One end is formed with the card slot (431) that can coordinate limit with hook (51), side wall second of the convex block (43) close to fore shaft (41) End is formed as guide surface (432), and side wall of the convex block (43) far from fore shaft (41) is configured to from above-mentioned first end to second end Gradually along the inclined-plane (433) that idler wheel (4) circumferentially extends, the third elastic component (30) makes the hook (51) of shrapnel (5) protect always Hold the trend moved from above-mentioned first end to second end.

3. the door latch structure of household electrical appliance according to claim 2, it is characterised in that：The idler wheel (4) is close to installation branch It is formed on the periphery wall of frame (3) second end along the depressed area (44) that idler wheel (4) circumferentially extends, the depressed area (44) and the card Slot (431) is connected.

4. the door latch structure of household electrical appliance according to claim 3, it is characterised in that：The card slot (431) is configured to V Shape, non-depressed area part is stretched into card slot (431) and is mutually held in the mouth with the medial surface of V-arrangement card slot (431) on idler wheel (4) periphery wall It connects；Angle between the guide surface (432) and convex block (43) peripheral surface and coupled idler wheel (4) periphery wall is blunt Angle.

5. the door latch structure of household electrical appliance according to claim 1, it is characterised in that：Idler wheel (4) fore shaft (41) Rear wall, which extends outwardly along fore shaft (41) length direction and collectively forms length with idler wheel (4) ring wall (45) accordingly extended, to be more than The extension (46) of fore shaft (41) front side wall.

6. the door latch structure of household electrical appliance according to claim 1, it is characterised in that：First elastic component (10) is Spring is provided with the positioning column (23) to extend back on the rear wall of the pedestal (2), and first elastic component (10) is placed on The first end of the periphery of the positioning column (23), first elastic component (10) is connected with pedestal (2) rear wall, first bullet The second end of property part (10) is connected with the second end of mounting bracket (3).

7. the door latch structure of household electrical appliance according to claim 1, it is characterised in that：The first end of the pedestal (2) is set It is equipped with the linking arm (22) to extend back, the first end of the mounting bracket (3) is articulated on the linking arm (22).

8. the door latch structure of household electrical appliance according to claim 1, it is characterised in that：The middle part of the mounting bracket (3) It is provided with the shaft (200) of parallel base (2) rear wall arrangement, which passes through the idler wheel (4) center by idler wheel (4) it can be rotatably arranged in mounting bracket (3).

9. the door latch structure of household electrical appliance according to claim 8, it is characterised in that：Second elastic component (20) is Torsional spring is provided with the limited block (24) close to opening (21) edge arrangement, the idler wheel (4) on the rear wall of the pedestal (2) Lateral surface on be provided with the limiting slot (42) radially extended, shaft (200) periphery is placed in the middle part of the torsional spring, it is described The first end of torsional spring is mutually blocked with limited block (24), and the second end of the torsional spring is placed in limiting slot (42) that idler wheel (4) is made to begin The trend for keeping fore shaft (41) to be rotated to pedestal (2) direction eventually.

10. the door latch structure of household electrical appliance according to claim 2, it is characterised in that：The third elastic component (30) For spring, the first hook (32), the shrapnel (5) are provided on the side wall of the close guide surface (432) of the mounting bracket (3) On be provided with the second hook (53), the first end of the third elastic component (30) is connected with the first hook (32), the third The second end of elastic component (30) is connected with the second hook (53).

11. the door latch structure of household electrical appliance according to claim 2, it is characterised in that：The first of the mounting bracket (3) End is provided with the mounting plate (31) to extend back, and the first end of the shrapnel (5) is movably connected on the mounting plate (31).

12. the door latch structure of household electrical appliance according to claim 11, it is characterised in that：The top of the mounting plate (31) It is corresponding with inserted sheet (311), there is the socket (52) passed through for inserted sheet (311), and the socket (52) on the shrapnel (5) Expand respectively to both ends from middle part and to form the hook (51) that can make shrapnel (5) and allow bit space along what idler wheel (4) radially twisted back and forth.