TWM581625U - Door locking latch device - Google Patents

Abstract

A latching device for a door, comprising an assembly seat fixed in a door and a gear pivoted on the assembly seat, the latch device further comprising an engaging member engaged with the gear at the same time and coupled in synchronism with the engaging member a latch that is coupled with a safety knob located on the outside and also with an inner handle located on the inside, thereby pivoting the inner handle or safety knob to drive the gear to pivot and interlocking the latch to the upper latch position Or unlatch the position.

Description

Door latching device

The present invention relates to a latching device for a door, and more particularly to a door mounted on a door, which can be moved to an upper latch position via an inner handle (inside) or a safety knob (outer side) so that the door cannot be opened or displaced to the solution. The latch position allows the door to be opened.

A commercially available folding door has two relatively pivotable door panels. When the folding door is closed, the two door panels are arranged in parallel in a straight line. When the folding door is opened, the two door panels can be overlapped together, thereby reducing the space occupied by the door opening. Therefore, such a folding door is more suitable for use in a small space (for example, a bathroom). The folding door needs to be positioned in a closed state when in the closed state, whereas the conventional folding door does not fix the door in the closed state, and thus the folding door may be opened due to a wind blow or an inadvertent collision.

In order to solve this problem, the present invention provides a latch device for a door, which is mounted in a mounting space of a first frame having a door, comprising: an assembly base including an inner surface and an outer surface, and an assembly seat Further comprising a pivot formed on the inner surface, a gear pivotally coupled to the pivot, a gear, an engagement member movably coupled to the assembly, the engagement member including a rack engaged with the gear, a latch, and The engaging members are coupled in series, the latch head is displaceable to an upper latching position or a retracting latching position, and an inner handle is mounted on one side of the outer surface of the assembling seat and outside the first frame, the inner handle An assembly end is coupled to the gear, the inner handle is pivoted and the engagement member is displaced with the latch to an upper latched or unlatched position.

The inventive door latching device can provide for the use of the locking device to operate the latch head displacement to the upper latching position or the unlatching position, such that the door in the form of a folding door has the function of locking or unlocking from the outside, providing positioning of the door in a closed state. Features.

The locking device for the door further includes: a safety knob pivotally disposed on the first frame, the safety knob includes a driving portion coupled to the gear and a groove formed on the outer end surface, and the rotating safety knob is a linkage gear Pivot with the inner handle and the engagement member is displaced with the latch to an upper latched or unlatched position.

The latch device for a door, further comprising: wherein the gear further comprises a first assembly hole formed on one end surface and a pivot hole formed around the outer side of the first assembly hole, the gear further comprising another one formed on the other A second assembly hole of the end surface, the pivot hole of the gear is pivotally connected to the pivot portion of the assembly seat, the assembly end of the inner handle is coupled with the first assembly hole, and the driving portion of the safety knob is coupled with the second assembly hole.

a latch device for a door, wherein the assembly base further includes a protrusion formed on an inner surface, the engaging member extending along a direction of displacement to form a track, the bump and the track Removably coupled to limit the engagement of the engagement member to the upper or disengaged position within the length of the track.

This creation will be more clearly understood in the detailed description of the illustrative embodiments of the present invention.

The present inventive latching device can be mounted in a door 11 that can be folded after opening, the latching device 249 for providing the function of the door 11 to remain closed when the door 11 is closed, according to the drawings of Figures 1 and 2 As shown, the door 11 includes a first panel 20 and a second panel 177 that can be assembled into a left-hand folding door. The first plate 20 includes a first end 25 and a second end 27, and the first plate 20 is further divided into an upper end 22 and a lower end 24.

Further, as shown in FIG. 4, the door 11 further includes a first frame 173 and a first outer frame 192. The first frame 173 includes a mounting space 173A extending along the length of the first frame 173. The frame 173 further includes an opening 173B extending from the outer side surface to the mounting space 173A, and the first frame 173 is fixed to the first end 25 of the first board 20. The first outer frame 192 is fixed to the second end 27 of the first plate 20, and a roller 193 is fixed to the top end of the first outer frame 192.

The second plate 177 of the folding door 10 includes a first side 179 and a second side 191. A second frame 176 is mounted on the first side 179 of the second plate 177, and a second frame 194 is fixed to the second side 191 of the second plate 177. The two pivots 195 are respectively fixed to the top of the second frame 194. Bottom end. The first and second frames 173, 176 are pivotally coupled to pivotally connect the first and second plates 20, 177.

The door 11 is mounted on a side of a door frame 197 fixed to the wall surface of the passage. The door frame 197 includes an upper rail beam 197A positioned laterally. The upper rail beam 197A has an upper latch hole 198A, and the two pivot shafts 195 are respectively pivoted to the door frame. On one side of the 197, the roller 193 is adapted to be slidably received in the upper rail guide 197A such that the second plate 177 is pivotable with a pivot axis defined by the centerline of the pivot 195, pivoting the second plate 177 At the same time, the first plate 20 is pulled together until the end faces of the first and second plates 20, 177 are aligned with the end faces (closed state), or the first and second plates 20, 177 are overlapped (open state).

Referring to Figures 3-7, the latch assembly 249 includes an assembly seat 251 that is secured to the door 11. The assembly base 251 includes an inner surface 253 and an outer surface 255 that are spaced apart from each other. The assembly base 251 further includes A pivot portion 272 is formed on the inner surface 253. The pivot portion 272 includes a shaft hole 274. The assembly base 251 further includes two projections 257 forming an inner surface 253.

The latch device 249 further includes a gear 294 pivotally coupled to the assembly base 251, wherein the gear 294 includes a first assembly aperture 298 and a second assembly aperture 300 spaced apart from one another, the gear 294 further including a first assembly formed A pivot hole 296 around the outer periphery of the hole 298. The pivot hole 296 of the gear 294 is pivotally connected to the pivot portion 272 of the assembly base 251, and the first assembly hole 298 faces the shaft hole 274.

The latching device 249 also includes an engagement member 335 movably coupled to the assembly base 251. The engagement member 335 includes a coupling portion 337 and a rack 339 extending from one end of the coupling portion 337. The engagement member 335 is further formed. Two rails 351 on the joint 337 and parallel to the rack 339. The two protrusions 257 of the assembly base 251 are respectively movably received in the two rails 351 of the engaging member 335, and the rack 339 of the engaging member 335 is engaged with the gear 294 (as shown in FIG. 7). The gear 294 pivots to interlock the engagement member 335.

The adapter 335 is coupled to one end of a link 417, and the other end of the link 417 is coupled to a latch 415 that is displaced to an unlatched position (as shown in Figures 1, 7) or a Upper latch position (as shown in Figures 8 and 9).

The latch device 249 is mounted in the mounting space 173A of the first bezel 173, and the head of the lock device 371 is housed inside the opening 173B of the first bezel 173, the latch head 415 facing the upper end 22 of the door 11 and Close to the upper track beam 197A.

The latch device 249 also includes an inner handle 433 that includes an assembled end 435 that is non-circular in cross section. The inner handle 433 is adapted to be located on one side of the room. As shown in FIGS. 5 and 6, the inner handle 433 is mounted on a side opposite to the outer surface 255 of the assembly seat 251, and the assembled end 435 of the inner handle 433 passes through the A frame 173 and a shaft hole 274 of the assembly seat 251 are coupled to the first assembly hole 298 of the gear 294 so that the pivoting inner handle 433 can drive the gear 294 to pivot and drive the engagement member 335 to be displaced together with the latch 415.

The latch device 249 further includes a safety knob 451 coupled to the gear 294. The safety knob 451 includes a pivot portion 453 and a driving portion 455 extending from the end surface of the pivot portion 453 and having a non-circular cross section. The 451 also includes a recess 457 formed on the outer end surface, the safety knob 451 is pivotally mounted on the opening 173B of the first frame 173 and the driving portion 455 is engaged with the second assembly hole 300 of the gear 294, so the safety knob 451 is rotated. The interlocking gear 294 will pivot. The inner handle 433 and the safety knob 451 are passed through the gear 294 from the inner handle 433 through a screw 436 and screwed with the safety knob 451 such that the inner handle 433, the gear 294 and the safety knob 451 are rotatably coupled together.

For convenience of explanation, it is assumed that the end faces and end faces of the first and second plates 20, 177 are aligned (closed state), the latch head 415 is in the unlatching position (as shown in Fig. 1), and the latch head 415 is separated from the upper latch hole 198A. (As shown in Figures 1 and 2), the latch 415 is aligned with the upper latch hole 198A but is not fitted, that is, the door 11 is in an openable state, thereby allowing the first and second plates 20, 177 to be The operation is arranged in an overlapping open state (the first and second plates 20, 177 are at an acute angle to each other) or in a fully open state.

To make the door 11 unable to be opened when the door 11 is in the closed state, it is assumed that the operator is located on the side (usually the inner side) of the door 11 having the inner handle 433, and the inner handle 433 needs to be from the vertical state (as shown in Fig. 1). Pivoting to a horizontal state (as shown in Figures 8, 9) such that the inner handle 433 interlocks the gear 294 to pivot, the gear 294 pushes the engagement member 335 to move, and further the latch 415 is from the unlatched position (as in Figure 1) The upper latch position (shown in Figures 8 and 9) is displaced. When the latch 415 is in the upper latch position, the latch 415 is engaged with the upper latch hole 198A such that the first frame 173 is fixed and cannot be moved or Rotate so that the door 11 cannot be opened.

In the state where the latch head 415 is in the upper latch position, the inner handle 433 can be used to directly operate the latch head 415 to be displaced to the unlatching position. Referring to FIGS. 8 and 9, it is only necessary to pivot the inner handle 433 from the horizontal state to the vertical state. When the interlocking gear 294 is reversed, the engaging member 335 is displaced until the latching head 415 is displaced to the disengaged position of the upper latching hole 198A. When the latching head 415 is in the unlatching position, the latching head 415 is separated from the upper latching hole 198A. , so the door 11 is allowed to be opened.

Assuming that the door 11 is in the closed state and the latch head 415 is in the upper latch position, in the event of an emergency, the operating latch 415 is displaced from the outside of the door 11 to the unlatching position, for example, the person inside the door 11 faints, at the door The outer person can engage with the recess 457 of the safety knob 451 by using a coin or the like, and the safety knob 451 can be further rotated. The safety knob 451 is pivoted by the interlocking gear 294, and the gear 294 is linked to the connecting member. The displacement of 335 is such that the latch head 415 is displaced from the upper latch position to the unlatched position so that the door 11 can be operated from the outside to the open state.

The inventive door latching device can provide for the use of the locking device 371 to operate the latching head 415 to be displaced to the upper latching or unlatching position such that the door 11 in the form of a folding door has the function of locking or unlocking from the outside, providing positioning of the door 11. The function in the off state.

Furthermore, although the present invention has been described as being described as being mounted on a folding door, it should be understood that the present locking device is not limited to use on a folding door, that is, the locking device of the present invention. It can still be applied to general (monolithic) doors or split doors.

The present invention disclosed in the specification is to be considered as illustrative and not restrictive. The scope of the present invention is defined by the scope of the appended claims, and is not intended to be limited by the scope of the invention.

11‧‧‧

20‧‧‧ first board

22‧‧‧Upper

24‧‧‧Bottom

25‧‧‧ first end

27‧‧‧ second end

173‧‧‧First border

173A‧‧‧ installation space

173B‧‧‧ openings

176‧‧‧second border

177‧‧‧ second board

179‧‧‧ first side

191‧‧‧ second side

192‧‧‧ first frame

193‧‧‧Roller

194‧‧‧ second frame

195‧‧‧ pivot

197‧‧‧ door frame

197A‧‧‧Upper track beam

198A‧‧‧Latch hole

249‧‧‧Lock device

251‧‧‧Assembly

253‧‧‧ inner surface

255‧‧‧ outer surface

257‧‧‧Bumps

272‧‧‧Band

274‧‧‧Axis hole

294‧‧‧ Gears

296‧‧‧Pivot

298‧‧‧First assembly hole

300‧‧‧Second assembly hole

335‧‧‧Connecting pieces

337‧‧‧Combination Department

339‧‧‧racks

351‧‧‧ Track

415‧‧‧Latch

417‧‧‧ Connecting rod

433‧‧‧ inside handle

435‧‧‧Assembled end

436‧‧‧ screws

451‧‧‧Safety knob

453‧‧‧Band

455‧‧‧ Drive Department

457‧‧‧ Groove

Fig. 1 is a combination diagram of a latch device for a creative door.

Fig. 2 is a combination view of another angle of the latch device for the creative door.

Figure 3 is an exploded perspective view of the inventive latch device.

Fig. 4 is another perspective exploded view of the latch device for the creative door.

Fig. 5 is a cross-sectional view taken along line 5-5 of Fig. 1.

Fig. 6 is a cross-sectional view taken along line 6-6 of Fig. 5.

Fig. 7 is a cross-sectional view taken along line 7-7 of Fig. 5.

Figure 8 is a cross-sectional view showing the operation of the inner handle interlocking latch head displaced to the upper latch position.

Figure 9 is a front view of the operation of the inner handle linkage latch to the upper latch position

The drawings are merely for the purpose of explaining the basic teachings, and the description of the number, the position, the relationship, and the size of the components of the embodiments will be explained or the technical skills will be read after reading and understanding the following description. In addition, after reading and understanding the following descriptions, changes in the exact dimensions and size ratios associated with specific forces, weights, strengths, and similar requirements are also industry skills.

In the different figures, the same reference numerals are used to designate the same or similar elements; in addition, please refer to the text such as "top", "bottom", "first", "second", "forward", "backward", "reverse" To "," "front", "back", "height", "twist", "length", "end", "side", "horizontal", "vertical", etc. and similar terms are only for the viewer The constructions in the figures are for reference only to aid in the description of the embodiments.

Claims (4)

A latching device for a door, mounted in a mounting space of a first frame having a door, comprising: an assembly seat including an inner surface and an outer surface, the assembly further comprising a surface formed on the inner surface a gear; a gear pivotally connected to the pivot; a connecting member movably coupled to the assembly, the engaging member includes a rack engaged with the gear; and a latch coupled to the engaging member, the latch is displaceable An upper latching position or an unlatched latching position; an inner handle mounted on one side of the outer surface of the assembly seat and located outside the first frame, the inner handle including an assembly end coupled to the gear, rotating The inner handle is pivoted and the engagement member is displaced with the latch to an upper latched or unlatched position. The latching device for a door according to claim 1, further comprising: a safety knob pivotally disposed on the first frame, the safety knob including a driving portion coupled to the gear and a groove formed on the outer end surface The rotation safety knob is linked to the interlocking gear and the inner handle, and the engagement member is displaced together with the latch to the upper latching position or the unlatching position. The latching device for a door according to claim 2, further comprising: wherein the gear further comprises a first assembling hole formed on one end surface and a pivot hole formed around the outer side of the first assembling hole, The gear further includes a second assembly hole formed on the other end surface, the pivot hole of the gear is pivotally connected to the pivot portion of the assembly seat, the assembled end of the inner handle is coupled with the first assembly hole, and the driving portion and the second assembly hole of the safety knob are Combine. The latching device for a door according to claim 1, wherein the assembly further comprises a protrusion formed on the inner surface, the engaging member extending along the direction of displacement to form a track. The lug is movably coupled to the rail to limit the engagement of the engaging member to the upper latching or unlatching position within the length of the rail.