TWI640679B - Adjustable device trip latch - Google Patents

Abstract

A latch for adjusting a device distance, comprising a housing unit, a bolt unit, and a linkage mechanism, the housing unit having a fixed sleeve with an adjustable sleeve length, and a movable sleeve, the linkage mechanism a first linkage plate and a second linkage plate having an adjustable linkage length, the first linkage plate is coupled to the tongue unit, and the second linkage plate is coupled to the tongue unit through the first linkage plate. And can be pulled by the movable sleeve to change the length of the linkage with the first linkage plate. During the adjustment, as long as the sleeve length between the movable sleeve and the fixing sleeve is changed, the length of the linkage between the first linkage plate and the second linkage plate is naturally changed, thereby facilitating adjustment of the latch The purpose of the device distance.

Description

Adjustable device distance latch

The present invention relates to a latch, and more particularly to a latch that is mounted on a door panel and that can be mounted on the door panel to control the unlocked adjustable device distance.

Referring to Figures 1, 2, and 3, there is a US 4,664,433 invention patent, which discloses a latch 1 that can be controlled by an unlocking lever 10, the latch 1 comprising a first housing 11, one and the first a second housing 12 rotatably sleeved by the housing 11 , an unlocking seat 13 interlocking with the unlocking lever 10 and positioned on the second housing 12 , a locking tongue 14 , and a locking sleeve 14 The connected carrier 15 and a latch 16 that rotatably couples the bolt 14 and the carrier 15. The first housing 11 is mounted on a door panel (not shown) and has a first cylinder wall 111 defining an axial first chamber 112 and having a path A flange portion 114 projecting from the outer end and defining a first spiral groove 113, and a block 115 projecting into the first chamber 112.

The second housing 12 is butted by two housings and has a sleeve portion 121 axially displaceable in the first chamber 112, and a clamping portion for clamping the unlocking seat 13 122. The socket portion 121 has a second cylinder wall 123 defining a second chamber 120, and a protrusion 124 protruding from the second barrel wall 123 toward the first spiral groove 113. The second portion The cylinder wall 123 has two slots 125, 126 which are spaced apart and are engageable by the card block 115. The unlocking seat 13 has a control portion 131 projecting from the clamping portion 122. The latching tongue 14 has a latching slot 141 having a rotary portion 151 rotatably inserted into the latching slot 141 and a second housing 120 extending toward the second housing 12. The inner driving portion 152 has two second spiral grooves 153, and each of the second spiral grooves 153 has a front end 154 and a rear end 155. The latch 16 is mounted on the locking tongue 14 and Through the second spiral groove 153, the driven portion 152 has a control groove 156 into which the control portion 131 extends.

When the latch 1 is in a first assembled position as shown in FIG. 2, the latch 16 is mounted on the rear end 155 of each second spiral groove 153, and the control portion 131 of the unlocking seat 13 extends into the linkage The seat 15 is in the control slot 156. As long as the user unlocks the unlocking lever 10, the unlocking seat 13 can be used to laterally displace the connecting seat 15, and the locking tongue 14 protrudes from the first housing 11 by the connection of the latch 16. When the latch 1 is to be shifted from the first assembled position of FIG. 2 to the second assembled position of FIG. 3, the operator causes the latch 16 to be rotated 180 degrees relative to the bolt 14 to cause the latch 16 to be rotated. Corresponding to the front end 154 of each of the second spiral grooves 153, the first housing 11 needs to be rotated 180 degrees with respect to the second housing 12, that is, the aforementioned invention patent adjusts one of the latches 1 When the distance of the device is 17 , in addition to the relative angle between the first housing 11 and the second housing 12 , the linkage 15 needs to be rotated, and the two must be separately adjusted during the adjustment, so the aforementioned invention patent It is troublesome to adjust the device distance 17.

It is an object of the present invention to provide a latch for an adjustable device distance that can improve at least one of the disadvantages of the prior art.

The latch of the present invention is adapted to be unlocked by an unlocking assembly and includes a housing unit, a tongue unit, and a linkage mechanism. The housing unit has a fixing sleeve, and a movable sleeve that is sleeved with the fixing sleeve and can change the length of the sleeve. The fixing sleeve has a chamber having a proximity to the unlocking assembly. Linking the wall, the bolt unit has a main locking tongue protrudingly mounted in the housing of the fixing sleeve, the linkage mechanism having a first linkage plate coupled with the main locking tongue, and a through a second linkage plate of the first linkage plate and the main locking tongue, the first linkage plate has a first linkage portion protruding from the linkage wall, the second linkage plate has a protrusion protruding from the linkage wall and is The second linkage portion pulled by the movable sleeve.

When the latch is in a first assembled position, the first linkage of the first linkage plate protrudes from the linkage wall and is coupled with the unlocking assembly when the movable sleeve is driven relative to the fixed sleeve When the cylinder moves and increases the length of the sleeve, the latch is switched to a second assembly position, and the second linkage portion of the second linkage plate is offset from the first linkage portion of the first linkage plate, and The unlocking assembly is coupled in conjunction.

The effect of the present invention is that when the distance of a device of the latch is adjusted, the first linkage plate and the second linkage are naturally changed by changing the length of the sleeve between the movable sleeve and the fixed sleeve. The length of the interlocking between the plates, thereby achieving the purpose of conveniently adjusting the distance of the device.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 4, 5 and 6, an embodiment of the latch 20 of the present invention is adapted for mounting on a door panel 21 and can be unlocked by an unlocking device 22 having two spaced sides 211, one connection The assembly surface 212 of the side surface 211 , a through hole 213 extending through the side surface 211 and mounted by the unlocking device 22 , and an assembly hole 214 communicating with the assembly surface 212 and the through hole 213 . There is a device distance 23 between the assembly surface 212 and the center point of the through hole 213. The latch 20 of the embodiment can be adapted to different device distances 23. The structure of the unlocking device 22 is not particularly limited. The present embodiment shows that the unlocking device 22 has a fixing base 221 and an unlocking assembly 222 mounted in the fixing base 221 and reciprocable along an unlocking direction 27. The unlocking assembly 222 is substantially controlled by a handle or a lock (not shown) and has a drive portion 223 adjacent to the latch 20. Since the improvement of the present invention is independent of the unlocking device 22, no further details are provided. Said.

The latch 20 includes a housing unit 3 mounted in the assembly hole 213 of the door panel 21 and hooked with the fixing base 221, a tongue unit 4 projectingly mounted inside the housing unit 3, and a latch unit 4 The linkage unit 4 and the linkage mechanism 5 of the unlocking assembly 222, and an anti-theft mechanism 6.

Referring to Figures 4, 6, and 7, the housing unit 3 has a fixing sleeve 31, a fascia 32 which is disposed outside the fixing sleeve 31 and whose outer side is flush with the assembly surface 212, and a fixing sleeve The sleeve 31 is sleeved and can adjust the sleeve length of the movable sleeve 33, a fastening seat 34 mounted on the movable sleeve 33 and fastened to the fixing seat 221, and a fixing sleeve 31 and the same A spiral assembly 35 on the movable sleeve 33. The fixing sleeve 31 has a fixed cylinder wall 311 disposed around a central axis 25, a bottom wall 312 connected to the fixed cylinder wall 311 adjacent to the unlocking device 22, and a bonding wall abutting the fascia 32. 313, the fixed cylinder wall 311 defines a chamber 310 having a first through hole 315 extending therethrough. The fascia 32 has a bolt projection hole 321 corresponding to the chamber 310.

The movable sleeve 33 has a movable cylinder wall 331 defining a fitting space 330, and a linking wall 332 integrally connected with the movable cylinder wall 331. The linking wall 332 has an inner wall surface facing the fitting space 330. 333, an outer wall surface 334 spaced from the inner wall surface 333, and a control hole 335 and two opening holes 336 extending through the inner wall surface 333 and the outer wall surface 334, the control hole 335 having two surrounding the central axis 25. The hole expansion portion 337 has a circular portion and is connected to the central portion 338 of the hole expansion portion 337.

The fastening seat 34 has a fastening base wall 341 located in the sleeve space 330, and two hooks 342 respectively extending from the fastening holes 321 and engaging with the fixing base 221, and the fastening base wall 341 There is a third through hole 343 corresponding to the control hole 335. The spiral assembly 35 has a spiral guide groove 351 disposed on the movable cylinder wall 331 and surrounding the central axis 25, and a protruding post 352 disposed on the fixed cylindrical wall 311 and extending into the spiral guide groove 351. The spiral guide groove 351 has a first end 353 and a second end 354 spaced from the first end 353 along a sleeve direction 24.

The tongue unit 4 has a main locking tongue 40 and a bolt spring 41 that urges the main locking tongue 40 into a locking direction 26. The main locking tongue 40 has a locking portion 42 extending from the locking tongue protruding hole 321 , an extending protrusion 43 integrally connected with the locking portion 42 , and a locking protrusion 43 to the locking portion 42 extended spring pocket 44.

Referring to Figures 6, 7, and 8, the locking portion 42 has a first base surface 421, a surrounding surface 422 surrounding the central axis 25 and connected to the first base surface 421, and a flat connection with the surrounding surface 422. a straight surface 423, and a guiding slope 424 connected to the leading surface 422 and the leading edge of the flat surface 423, the locking portion 42 further has a groove surface 426 defining a insertion groove 425, the groove surface 426 having a The flat face 423 is parallel and adjacent to the first face segment 427 and a second face segment 428 spaced parallel to the first face segment 427. The extending protrusion 43 has a second base surface 431 spaced apart from the first base surface 421, an arc connecting surface 432 extending from the second base surface 431 to the surrounding surface 422, and one and the second An extension surface 433 to which the face portion 428 is joined, and a pin hole 434 extending through the extension surface 433 and the arc connection surface 432.

Referring to Figures 4, 6, and 7, the linkage mechanism 5 has a first linkage plate 51, a second linkage plate 52 that is flush with and offset with the first linkage plate 51 along the sleeve direction 24, and a Latch 53. The first linkage plate 51 has a first limiting portion 511 extending into the insertion slot 425, and a first linkage portion 512 that can be protruded or retracted into the sleeve space 330. The first limiting portion The portion 511 has a through hole 513 through which the latch 53 is inserted. The latch 53 is inserted into the pin hole 434 of the main latch tongue 40 to interlock the main latch tongue 40 and the first linkage plate 51. The first linkage portion 512 has two upper and lower spaced hooks 514. The second linkage plate 52 is coupled to the main locking tongue 40 through the first linkage plate 51, and has a second limiting portion 521 extending into the insertion slot 425, and a protruding portion of the movable sleeve 33. a second linking portion 522 of the control hole 335, the second linking portion 522 has two upper and lower spaced abutting surfaces 523, and two protruding toward the first linking plate 51 and abutting against the hook 514 The push block 524 is linked.

In this embodiment, the anti-theft mechanism 6 is an optional component, which can be omitted. The anti-theft mechanism 6 has an anti-theft lock 61 that can be coupled with the main lock tongue 40, a baffle 62 that is engaged with the anti-theft lock tongue 61, and a baffle 62. An anti-theft spring 63 that urges the anti-theft lock tongue 61 to move in the locking direction 26 and a top stay assembly 64 that prevents the anti-theft lock tongue 61 from moving in the unlocking direction 27 alone.

The baffle 62 has a base portion 621 extending along the sleeve direction 24, a fastening portion 622 vertically connected to the base portion 621 and being fastened to the anti-theft latch 61, and a base portion 621 a protruding block 623 protruding upward. The top support assembly 64 has a positioning plate 641 mounted in the chamber 310, an anti-pushing plate 642 assembled on the positioning plate 641 and pressed against the blocking portion 623 of the baffle 62, and a The push plate 642 is pressed against the top brace 643 of the baffle 62. The positioning plate 641 has a third through hole 644 corresponding to the first through hole 315.

Referring to Figures 6, 8, and 9, when the latch 20 is in a first assembled position as shown in Figure 6, the main locking tongue 40 protrudes from the locking tongue projection 321 of the fascia 32 and is at Locked state. The first linking plate 51 and the second linking plate 52 are aligned inside and outside, that is, the hook 514 of the first linking plate 51 is aligned with the abutting surface 523 of the second linking plate 52, and simultaneously unlocked The driving portion 223 of the component 222 is hooked. Since the first linking plate 51 is located substantially in the middle of the control hole 335, the second linking plate 52 is offset on the side of the control hole 335. Therefore, the second linking plate 52 is disposed. The abutting surface 523 slightly protrudes from the control hole 335 and is blocked by the linking wall 332 and cannot be retracted into the fitting space 330. At this time, the main locking tongue 40 and the outer end of the anti-theft locking tongue 61 are flush, and at the same time protrude from the locking tongue protruding hole 321 of the decorative plate 32.

Referring to FIGS. 6, 8, 10, when the unlocking assembly 222 is driven and moved along the unlocking direction 27, the main locking tongue 40 is pulled through the linkage mechanism 5 to move along the unlocking direction 27, due to the baffle 62 The fastening portion 622 abuts against the first base surface 421 of the main locking tongue 40. Therefore, the anti-theft locking tongue 61 also moves along the unlocking direction 27 against the elastic force of the anti-theft spring 63 until the locking tongue 40 is contracted. The locking tongue is inserted into the protruding hole 321 .

Referring to Figures 8 and 11, it is noted that, in the first assembled position, if a sharp object 28 is inserted from the side of the guide bevel 424 of the main locking tongue 40, the main locking tongue 40 can be The unlocking direction 27 is pushed, but the anti-theft locking tongue 61 needs to push the buckled baffle 62 when moving in the unlocking direction 27, and the blocking portion 623 of the baffle 62 is abutted by the top strut assembly 64, so In this position, the sharps 28 are unable to move the anti-theft lock 61 alone in the unlocking direction 27, thereby achieving anti-theft purposes.

Referring to Figures 7, 9, and 12, when the latch 20 is to be assembled on another door panel 21' having a different distance 23 from the device, the movable sleeve 33 is rotated relative to the fixed sleeve 31 as the spiral guide groove When the second end 354 of the 351 abuts against the protruding post 352, the length of the sleeve between the fixing sleeve 31 and the movable sleeve 33 increases, and at this time, the first of the first linking plate 51 The interlocking portion 511 is retracted into the accommodating space 330 through the control hole 335, and the abutting surface 523 of the second linking plate 52 is blocked by the linking wall 332 of the movable sleeve 33 and cannot be retracted. The second linkage plate 52 can be gradually displaced from the first linkage plate 51 along the sleeve direction 24 until the interlocking push blocks 524 of the second linkage plate 52 abut against the first linkage plate 51. Hook 514. That is, when adjusting the distance 23 of the device, the sleeve length of the fixed sleeve 31 and the movable sleeve 33 can be adjusted by automatically rotating the movable sleeve 33, and the first linkage is automatically synchronized. The plate 51 and the second linkage plate 52 are staggered to adjust the interlocking length.

Referring to FIGS. 12 and 13, when the latch 20 is in the second assembled position of FIG. 12, the linkage mechanism 5 is coupled to the driving portion 223 of the unlocking device 22 through the second linkage plate 52, and the main The locking tongue 40 protrudes from the housing unit 3, and when the driving portion 223 of the unlocking assembly 222 is driven to move in the unlocking direction 27, the linkage mechanism 5 can also drive the main locking tongue 40 into the housing unit 3 Inside.

In summary, when the latch 20 of the present invention adjusts the distance 23 of the device, the sleeve length between the movable sleeve 33 and the fixed sleeve 31 can be easily adjusted by rotating the movable sleeve 33. At the same time, the second linkage plate 52 is pulled to adjust the length of the linkage between the first linkage plate 51 and the second linkage plate 52. Therefore, the present invention is indeed a latch 20 which is simple in adjustment operation and novel in structure.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

20‧‧‧Latch

21‧‧‧ Door panel

21’‧‧‧ Door panel

211‧‧‧ side

212‧‧‧ Assembly surface

213‧‧‧through holes

214‧‧‧Assembled holes

22‧‧‧ unlocking device

221‧‧‧ fixed seat

222‧‧‧Unlocking components

223‧‧‧ Drive Department

23‧‧‧Device distance

24‧‧‧ Socket direction

25‧‧‧ center axis

26‧‧‧Lock direction

27‧‧‧Unlocking direction

28‧‧‧ sharp objects

3‧‧‧ housing unit

31‧‧‧Fixed sleeve

310‧‧ ‧ room

311‧‧‧Fixed wall

312‧‧‧ bottom wall

313‧‧‧Bound wall

315‧‧‧First perforation

32‧‧‧Plate

321‧‧‧Lock tongue protruding hole

33‧‧‧ Activity sleeve

330‧‧‧ Included space

331‧‧‧ movable wall

332‧‧‧ linkage wall

333‧‧‧ inner wall

334‧‧‧ outer wall

335‧‧‧Control hole

336‧‧‧ openings

337‧‧‧ hole expansion

338‧‧‧ Central Department

34‧‧‧ buckle seat

341‧‧‧With the base

342‧‧‧ card hook

343‧‧‧Second perforation

35‧‧‧Spiral components

351‧‧‧Spiral guide groove

352‧‧‧ stud

353‧‧‧ first end

354‧‧‧ second end

4‧‧‧Lock tongue unit

40‧‧‧Main lock tongue

41‧‧‧Chain spring

42‧‧‧Lock Control Department

421‧‧‧ first base

422‧‧‧ Around the surface

423‧‧ ‧ flat face

424‧‧‧ guiding slope

425‧‧‧ Socket slot

426‧‧‧ slotted surface

427‧‧‧ first paragraph

428‧‧‧Second section

43‧‧‧Extended protrusion

431‧‧‧second base

432‧‧‧ arc face

433‧‧‧Extended face

434‧‧ ‧ pinhole

44‧‧‧Spring pocket

5‧‧‧ linkage agency

51‧‧‧First linkage board

511‧‧‧First Limitation Department

512‧‧‧First Linkage Department

513‧‧‧through hole

514‧‧‧

52‧‧‧Second linkage board

521‧‧‧Second Limitation

522‧‧‧Second Linkage

523‧‧‧Abutment

524‧‧‧ linkage block

53‧‧‧Latch

6‧‧‧Anti-theft mechanism

61‧‧‧Anti-theft lock tongue

62‧‧‧Baffle

621‧‧‧Parts Department

622‧‧‧Deduction Department

623‧‧‧Block

63‧‧‧Anti-theft spring

64‧‧‧Top support assembly

641‧‧‧ positioning board

642‧‧‧Anti-push board

643‧‧‧Top support shrapnel

644‧‧‧ third perforation

Other features and advantages of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is an exploded perspective view of the US Patent No. 4,664,433; Figure 2 is a combined sectional view of the invention patent, The invention patent is in a first assembled position; Figure 3 is a view similar to Figure 2, the invention patent is in a second assembled position; Figure 4 is an exploded perspective view of one embodiment of the latch of the present invention, while illustrating Figure 5 is a view of a state of use of the embodiment, illustrating the relative relationship of the latch, the unlocking device and a door panel; Figure 6 is a longitudinal cross-sectional view of the embodiment The schematic view also illustrates the relative relationship between the latch, the unlocking device and the door panel, the latch being in a first assembled position; FIG. 7 is another exploded perspective view of the embodiment, disassembling the components from different directions; Is a transverse cross-sectional view of the embodiment; Fig. 9 is a side view of the embodiment; Fig. 10 is a view similar to Fig. 6, illustrating the first assembly position Figure 11 is another longitudinal cross-sectional view of the embodiment, mainly illustrating an anti-theft mechanism of the latch; Figure 12 is a view similar to Figure 6 in a second assembled position And Figure 13 is a view similar to Figure 6 illustrating the unlocking of the latch in the second assembled position.

Claims (8)

A latch suitable for being unlocked by an unlocking component and comprising: a housing unit having a fixing sleeve, a movable sleeve sleeved with the fixing sleeve and capable of changing the length of the sleeve, and a rotating assembly The fixed sleeve has a chamber having a linking wall adjacent to the unlocking assembly, and a movable barrel wall coupled to the linking wall and defining a nesting space, the linking wall having a facing An inner wall surface of the nesting space, an outer wall surface spaced apart from the inner wall surface, and a control hole extending through the inner wall surface and the outer wall surface, the rotating assembly having a fixed sleeve and the movable sleeve disposed therein a spiral guide groove, and a stud extending into the spiral guide groove and disposed on the other of the fixed sleeve and the movable sleeve, the spiral guide groove having a first end, and a along a second end spaced apart from the first end; a tongue unit having a main locking tongue projectably mounted in the housing of the fixing sleeve; and a linkage mechanism a first linkage plate coupled to the main locking tongue, and a second linkage plate coupled to the main locking tongue through the first linkage plate, the first linkage plate having a freely movable through the linkage wall a first linking portion of the control hole, the second linking plate has a second linking portion protruding from the linking wall and being pulled by the movable sleeve, the second linking portion having at least one abutting against the linking wall The abutting surface of the outer wall surface; when the latch is in a first assembled position, the first linking portion of the first linking plate protrudes from the linking wall and is coupled with the unlocking component when The process of shifting the latch to a second assembled position and the transition of the latch from the first assembled position to the second assembled position when the movable sleeve is rotated relative to the fixed sleeve to increase the length of the sleeve The first linkage portion of the first linkage plate is retracted into the sleeve space through the control hole, and the second linkage portion of the second linkage plate is pushed by the linkage wall to be offset from the first linkage plate. At this time, the second linkage portion and the Even in combination lock assembly movably. The latch of claim 1, wherein the first linking portion of the first linking plate has at least one hook, and the second linking portion of the second linking plate has at least one when the latch is at In the second assembly position, the push block is abutted against the at least one hook edge. The latch of claim 2, wherein the bolt unit further has a bolt spring that urges the main bolt to move in a locking direction. The latch of claim 3, wherein the main locking tongue has a locking portion projecting from the housing of the fixing sleeve, an extension protrusion connected to the locking portion, and a The extension protrusion extends toward the locking portion and is configured to receive the spring pocket of the bolt spring, the locking portion has a insertion slot, and the first linkage plate further has a first portion extending into the insertion slot a limiting portion, the second linking plate has a second limiting portion extending into the insertion slot. The latch of claim 4, wherein the first limiting portion of the first linking plate has a through hole extending along the sleeve direction, and the linkage mechanism further has a mounting portion on the extending protrusion And pass through the pin of the through hole. The latch of claim 2, adapted to be coupled to a fixed seat, wherein the housing unit further has a snap seat mounted on the movable sleeve, the snap seat having at least one protrusion protruding from the activity The interlocking wall of the sleeve and the hook combined with the fixing seat. The latch of claim 2, further comprising an anti-theft mechanism having an anti-theft lock tongue that abuts the main lock tongue, a baffle that can be moved by the top of the main lock tongue, and a The anti-theft latch pushes the anti-theft spring in a locking direction, and a top stay assembly mounted in the housing of the fixing sleeve and preventing the anti-theft lock from moving in an unlocking direction. The latch of claim 7, wherein the top support assembly has a positioning plate installed in the housing, an anti-push plate mounted on the positioning plate and pressing the baffle, and a guard Push the plate to the top brace that is pressed against the baffle.