TWI384113B - Fire door lock structure and latch assembly thereof - Google Patents

Description

Fire door lock combination structure and its bolt

The present invention relates to a fire door lock combination structure and a lock bolt thereof, and particularly relates to a stop seat that is fastened to a door frame by using a hook provided on a fire door to prevent the fire door or the door frame from being heated by fire. The deformation causes the stop seat to fail to block the fire door lock combination structure of the lock tongue.

A well-known type of fireproof door lock, such as the new patent No. 568160 of Taiwan, whose locking tongue is mainly disposed above and below the fire door, and is blocked by a stop seat provided on the door frame, and is locked. The upper vertical locking tongue usually has to be uncoupled from the blocking seat by the action of a main locking body. Referring to FIG. 1 , the conventional fire door locking system has a stopping seat 20 disposed on a door frame 10 and A locking bolt 40 is disposed on a fire door 30. A locking tongue 41 of the locking bolt 40 is blocked by the blocking seat 20 to prevent the fire door from being opened, and has the function of anti-theft and fire prevention. Referring to FIG. 2 , since the door frame 10 and the fire door 30 only block the bolt 41 with the stopper seat 20 , when the door frame 10 or the fire door is thermally deformed due to a fire, the door frame is disposed on the door frame. The stop 20 of the 10 will not be able to block the bolt 41 of the bolt 40, so that the fire door loses the function of blocking the fire source.

The main purpose of the present invention is to provide a fire door lock combination structure, comprising a stop seat disposed on a door frame and a lock bolt disposed on a fire door, wherein the lock bolt comprises a lock seat and a lock tongue a set, a snap-on baffle, an elastic member, and a linkage group, the lock tongue set having a lock The latching member and the latching baffle are pivotably disposed on a receiving slot of the latching seat, the latching baffle has a hook and an abutting portion, and the elastic member is One end presses against the abutting portion, so that the fastening baffle can swing in the receiving groove, and when the fireproof door is closed, the buckle of the fastening baffle is fastened to the blocking seat In order to prevent the fire door or the door frame from being deformed by heat, the stop seat cannot stop the lock tongue.

Another object of the present invention is to provide a fire door lock combination structure, wherein the hook and the lock tongue define an accommodating space for accommodating the stop seat. The stop seat has a rear surface adjacent to the fire door and a front surface opposite to the rear surface, the rear surface having an accommodating portion for the hook of the fastening baffle Used to fasten in the accommodating portion.

Referring to Figures 3, 4 and 5, a preferred embodiment of the present invention, a fire door lock combination structure, comprising a lock bolt 100 and a stop seat 200, the lock bolt 100 is disposed on a The fireproof door 300 is disposed on a door frame 400. The lock bolt 100 is coupled to the stop seat 200. The lock bolt 100 includes a lock seat 110, a lock tongue set 120, and a buckle. The baffle 130, an elastic member 140 and a linkage group 150 have a bottom portion 111, a first side portion 112, and a second side portion 113 opposite to the first side portion 112. The bottom portion 111, the first side portion 112, and the second side portion 113 collectively surround the defined receiving groove 114 and a top end 115. The locking tongue set 120 has a locking tongue 121, the locking tongue 121 and the buckle The baffle plate 130 is pivotally disposed on the accommodating groove 114 of the lock base 110. The latching tongue 121 has a blocking surface 121a and a limiting surface 121h connecting the blocking surface 121a. The board 130 has a body 131, at least a side plate 132 protruding from the body 131, at least one hook 133, an abutting portion 134 and a limiting slot 135 located below the body 131. The hook 133 and the abutting portion 134 are formed on the side plate 132 Side plate body 132.

In this embodiment, the number of the side plate body 132 and the buckle 133 are two, and the length of the body 131 is smaller than the length of the side plate body 132, so that the body 131 and the side plate body 132 cannot be completely connected and left. The space is formed by the limiting slot 135. The hook 133 protrudes from the top end 115 of the locking seat 110. The abutting portion 134 is a cantilever, and the cantilever is protruded from the side plate 132 and faces the The second side portion 113 defines an accommodation space S between the buckle 133 and the locking tongue 121 when the locking tongue 121 extends between the first side portion 112 and the second side portion 113. The accommodating space S is disposed in the accommodating groove 114 of the lock seat 110. The accommodating space 200 is disposed in the accommodating groove 114 of the lock seat 110. The elastic member 140 is a torsion spring and has a first end 141. The first end 141 is coupled to the abutting portion 134 of the fastening baffle 130. In this embodiment, the engaging baffle The cantilever is recessed with a recess 134a, and the first end 141 is fastened to the recess 134a, and the elastic member 140 elastically drives the latching baffle 130 to enable the latching The baffle 130 is configured to be fastened to the retaining seat 200 . The interlocking set 150 is disposed on the receiving slot 114 and pivotally connected to the latching set 120 .

Referring to FIGS. 3, 4 and 5, the tongue set 120 further has a coupling pin 122, two linkage plates 123 and a latch 124. The two linkage plates 123 and the locking tongue 121 are threaded by the latch 124. The two interlocking plates 123 are in a state of being interlocked with the locking tongue 121. The coupling pin 122 has two end portions 122a. The first side portion 112 of the locking seat 110 has a first sliding slot 112a. The second side portion 113 has a second sliding slot 113a, the knot Each of the end portions 122a of the pinning member 122 is respectively restricted from moving in the first sliding slot 112a and the second sliding slot 113a. The interlocking group 150 has a first linking member 151 and a second pivotally connected to each other. The linking member 152 is pivotally connected to the first linking member 151 of the interlocking group 150 and the two linking plates 123 of the locking tongue set 120 such that the coupling pin 122 is the first of the linkage group 150 When the linkage 151 is driven, the locking tongue 121 is simultaneously pulled by the coupling pin 122, so that the locking tongue 121 telescopically passes between the first side portion 112 and the second side portion 113.

In addition, the latch 100 of the fire door lock further includes a positioning pin 160 pivotally connected to the side plate 132 of the fastening baffle 130 and the first linking member 151 of the interlocking group 150. The positioning pin 160 has two ends 161 , and the end 161 is respectively coupled to the first side portion 112 and the second side portion 113 , and the fastening baffle 130 forms a swing with the positioning pin 160 as a rotating shaft. The elastic member 140 further has a second end 142 and a sleeve portion 143 disposed on the positioning pin 160. The second end 142 is coupled to the coupling pin 122 of the bolt assembly 120. In addition, the fire door lock is The latch 100 further has an adapter lever 170 and a pivoting lever 180. The adapter lever 170 pivotally connects the second linkage 152 with the pivoting lever 180. Further, the first side of the locking bracket 110 The portion 112 and the second side portion 113 each have a longitudinal sliding groove 116. The pivoting rod 180 has two distal ends 181, and each of the distal ends 181 is slidably disposed on each of the longitudinal sliding grooves 116.

Referring to FIG. 5 and FIG. 6 again, the fire door 300 is normally closed. The bottom 111 of the lock seat 110 is disposed on the fire door 300. The lock tongue 121 of the lock set 120 protrudes from the fire door 300. The lock seat 110 is located between the lock tongue 121 and the buckle baffle 130. In the embodiment, the stop seat 200 has a rear view adjacent to the fire door 300. The front surface 210 of the rear surface 220 is opposite to the front surface 210 of the rear surface 220. The blocking surface 121a is for engaging the front surface 210 of the stopper base 200. Therefore, the stopper seat 200 can block the locking tongue 121 to The fireproof door 300 is prevented from being opened. In addition, the rear surface 220 has a receiving portion 221 for the buckle 133 of the fastening shutter 130 to be fastened in the receiving portion 221 to avoid occurrence. In the event of a fire, the fire door 300 or the door frame 400 is deformed by heat, so that the stop seat 200 cannot stop the bolt 121 and lose the fireproof effect. As shown in FIG. 7, because the fire door 300 is deformed, the The locking tongue 121 is disengaged from the front surface 210 of the blocking seat 200. However, the buckle 133 of the fastening flap 130 is still engaged in the receiving portion 221 of the blocking seat 200. Therefore, the fire door 300 is still maintained in the closed position, shielding the portal passage, avoiding the spread of the flame tongue, and achieving the purpose of fire prevention.

Moreover, since the accommodating portion 221 is formed in the shackle 200, the shackle 133 of the shackle 130 is fastened to the accommodating portion 221, and a large contact area is generated. The overall frictional force is less likely to disengage, and the fire door 300 is more stably maintained in the closed position.

In addition, when the locking tongue 121 protrudes from the locking seat 110, at this time, the coupling pin 122 of the locking tongue set 120 is away from the abutting portion 134 of the fastening baffle 130, and due to the engaging baffle The abutting portion 134 of the 130 is pressed by the first end 141 of the elastic member 140, and the second end 142 of the elastic member 140 is coupled to the coupling pin 122 of the locking tongue set 120, so that the elastic member is made The 140 is in an elongated shape and generates an elastic restoring force for pulling the fastening flap 130 back toward the bolt 121. This causes the hook 133 of the fastening flap 130 to be more deeply engaged. In the accommodating portion 221, the engaging baffle 130 is more difficult to be detached from the blocking seat 200, so that the fire door is The 300 is more stably maintained in the closed position.

Referring to FIG. 8 , the lock door structure 100 of the fire door lock is unfastened to form an unlocked state. Referring to FIGS. 8 , 9 and 10 , the adapter bar 170 drives the pivot connection. The rod 180 is moved up along each of the longitudinal sliding grooves 116, and simultaneously the second linking member 152 of the interlocking group 150 is pivoted toward the bottom portion 111 of the locking seat 110. At this time, due to the first linking member 151 and the first The two linking members 152 are pivotally connected to each other, so that the first linking member 151 is also pivotally pivoted, thereby causing the first linking member 151 to swing with the positioning pin 160 as a rotating shaft, since the coupling pin 122 is pivotally connected. The first linking member 151 of the interlocking group 150 and the two linking plates 123 of the locking tongue set 120 are restricted from moving in the first sliding slot 112a and the second sliding slot 113a, so the coupling pin 122 is When the first linking member 151 is driven, the first sliding slot 112a and the second sliding slot 113a are moved outwardly to simultaneously drive the two linking plates 123, and the locking bolts 121 are driven by the two linking plates 123. The bolt 121 is retracted into the lock seat 110.

At the same time, since the coupling pin 122 moves outward along the first sliding slot 112a and the second sliding slot 113a, the fastening baffle 130 is no longer limited by the coupling pin 122, so the elastic member can be The elastic restoring force of the latching flap 130 is pivoted toward the latching tongue 121 with the positioning pin 160 as a rotating shaft, and the latching tongue 121 is received in the limiting slot 135 of the latching flapper 130. In this embodiment, the body 131 of the latching flapper 130 is in contact with the limiting surface 121b of the latching tongue 121. In this embodiment, the limiting surface 121b can be blocked by the latching flapper 130. To limit the reset of the bolt 121, when the fire door 300 is opened, when the door is closed again, the stop seat 200 pushes the buckle plate 130 to disengage the bolt 121 from the buckle plate 130. The limiting slot 135 is no longer locked. At this time, the locking tongue 121 The lock can be reset and protruded from the lock seat 110, and the stop seat 200 is located between the lock tongue 121 and the snap shutter 130 to form a locked state.

When the fire door lock combination of the present invention is configured in the locked state, the hook 133 of the buckle baffle 130 can fasten the receiving portion 221 of the stop seat 200 to avoid the fire door 300 or the door frame 400. The fire door lock combination structure can still be maintained in a locked state when the fire is thermally deformed to prevent the fire door 300 from being opened.

The scope of the present invention is defined by the scope of the appended claims, and any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are within the scope of the present invention. .

100‧‧‧Lock

110‧‧‧Lock seat

111‧‧‧ bottom

112‧‧‧ first side

112a‧‧‧First chute

113‧‧‧ second side

113a‧‧‧Second chute

114‧‧‧ accommodating slots

115‧‧‧Top

116‧‧‧Longitudinal chute

120‧‧‧Lock tongue set

121‧‧‧Lock tongue

121a‧‧‧ stop surface

121b‧‧‧Limited surface

122‧‧‧Combined pin

122a‧‧‧End

123‧‧‧ linkage board

124‧‧‧Latch

130‧‧‧Fitting baffle

131‧‧‧Ontology

132‧‧‧ side plate

133‧‧‧catch

134‧‧‧Abutment

134a‧‧‧ Groove

135‧‧‧ Limit slot

140‧‧‧Flexible parts

141‧‧‧ first end

142‧‧‧ second end

143‧‧‧Cylinder

150‧‧‧ linkage group

151‧‧‧First linkage

152‧‧‧Second linkage

153‧‧‧ Third linkage

160‧‧‧Locating pin

End of 161‧‧

170‧‧‧Adapter rod

180‧‧‧ pivot rod

181‧‧‧End

200‧‧‧stops

210‧‧‧ front surface

220‧‧‧Back surface

221‧‧‧ 容部

300‧‧‧ fire doors

400‧‧‧ door frame

S‧‧‧ accommodating space

10‧‧‧ door frame

20‧‧‧stops

30‧‧‧Fire doors

40‧‧‧Lock

41‧‧‧Lock tongue

Fig. 1 is a schematic view showing a lock state of a lock tongue and a stop seat of a conventional fire door lock.

Figure 2: Schematic diagram of the lock tongue and the stop seat of the conventional fire door lock forming an unblockable state.

Figure 3 is an exploded perspective view of a lock bolt and a stop seat of a fire door lock combination structure in accordance with a preferred embodiment of the present invention.

Figure 4 is an exploded perspective view of the lock bolt in accordance with a preferred embodiment of the present invention.

Figure 5 is a side cross-sectional view showing the latch and the stop block in a locked state in accordance with a preferred embodiment of the present invention.

Figure 6 is a perspective cross-sectional view showing the latch and the stopper forming a locked state according to a preferred embodiment of the present invention.

Figure 7 is a side cross-sectional view showing the latch and the retaining seat in a locked state when the fire door is deformed in accordance with a preferred embodiment of the present invention.

Figure 8 is a side cross-sectional view showing the latch of the fire door lock and the stop seat in an unlocked state in accordance with a preferred embodiment of the present invention.

Figure 9: According to a preferred embodiment of the present invention, the latch of the fire door lock forms a three-dimensional combination of the unlocked state.

Figure 10 is a perspective cross-sectional view showing the latch of the fire door lock in an unlocked state in accordance with a preferred embodiment of the present invention.

100‧‧‧Lock

110‧‧‧Lock seat

112‧‧‧ first side

112a‧‧‧First chute

113‧‧‧ second side

114‧‧‧ accommodating slots

115‧‧‧Top

116‧‧‧Longitudinal chute

120‧‧‧Lock tongue set

121‧‧‧Lock tongue

121a‧‧‧ stop surface

121b‧‧‧Limited surface

122‧‧‧Combined pin

123‧‧‧ linkage board

124‧‧‧Latch

130‧‧‧Fitting baffle

131‧‧‧Ontology

132‧‧‧ side plate

133‧‧‧catch

134‧‧‧Abutment

140‧‧‧Flexible parts

150‧‧‧ linkage group

151‧‧‧First linkage

152‧‧‧Second linkage

160‧‧‧Locating pin

170‧‧‧Adapter rod

180‧‧‧ pivot rod

200‧‧‧stops

210‧‧‧ front surface

220‧‧‧Back surface

221‧‧‧ 容部

Claims (20)

A lock for a fire door lock for interlocking with a stop seat disposed on a door frame, the lock of the fire door lock comprising: a lock seat having a bottom portion and a first side portion a second side portion and a receiving groove defined by the bottom portion, the first side portion and the second side portion; a locking tongue group having a locking tongue, the locking tongue being pivotable a accommodating groove provided in the lock seat; a latching baffle pivotally disposed in the accommodating groove of the lock seat, the snap baffle having a hook; an elastic member The elastic member drives the fastening baffle elastically so that the buckle of the fastening baffle is fastened to the blocking seat; and a linkage group , which is pivotally connected to the tongue set. The lock for a fire door lock according to claim 1, wherein the bottom of the lock seat is disposed on a fire door, the stop seat of the door frame has a rear surface adjacent to the fire door, the rear surface The accommodating portion is provided with a hook for the fastening baffle for engaging in the accommodating portion. The lock for a fire door lock according to the first aspect of the invention, further comprising a positioning pin having two ends, the positioning pin pivotally connecting the fastening baffle and the interlocking group, and the positioning pin Each of the end portions is coupled to the first side portion and the second side portion, respectively, and the snap-on baffle forms a swing with the positioning pin. The lock for a fire door lock according to claim 1, wherein the buckle and the lock are when the lock tongue extends between the first side portion and the second side portion The accommodating space between the tongues defines an accommodating space for the accommodating seat to be received therein. The lock for a fire door lock according to the above aspect of the invention, wherein the lock tongue has a limit surface that can be blocked by the buckle baffle to limit the lock tongue to be reset. The lock for a fire door lock according to claim 1, wherein the lock base further has a top end, and the hook of the buckle baffle protrudes from the top end. The lock for a fire door lock according to the above aspect of the invention, wherein the buckle baffle comprises a body and at least one side plate protruding from the body, the buckle being formed on the side plate body. The lock for a fire door lock according to the seventh aspect of the invention, the buckle baffle has an abutting portion, wherein the abutting portion is formed on the side plate body. The lock for a fire door lock according to the invention of claim 8, wherein the abutment portion is a cantilever, and the cantilever is protruded from the side plate body. The lock bolt of the fire door lock according to claim 9, wherein the bolt set further has a coupling pin, the tongue is pulled by the joint pin, and the elastic member has a first end and a The second end is coupled to the abutting portion of the fastening baffle, and the second end is coupled to the coupling pin of the locking tongue set. A fire door lock combination structure, comprising: a stop seat disposed on a door frame; and a lock bolt disposed on a fire door, the lock bolt comprising: a lock seat having a bottom and a first a side portion, a second side portion and a receiving groove defined by the bottom portion, the first side portion and the second side portion; a locking tongue group having a locking tongue The oscillating ground is pivotally disposed in the receiving groove of the lock seat; a latching baffle is pivotally disposed in the receiving slot of the latching seat, the latching baffle has a hook; an elastic member is disposed in the receiving slot of the latching seat The elastic member is configured to elastically drive the fastening baffle such that the buckle of the fastening baffle is fastened to the blocking seat; and a linkage group pivotally connected to the locking tongue set. The fire door lock combination structure of claim 11, wherein the bottom of the lock seat is disposed on the fire door, the stop seat of the door frame has a rear surface adjacent to the fire door, the rear surface The accommodating portion is provided with a hook for the fastening baffle for engaging in the accommodating portion. The fire door lock combination structure according to claim 11, further comprising a positioning pin having two ends, the positioning pin pivotally connecting the fastening baffle and the interlocking group, and each of the positioning pins The end portions are respectively coupled to the first side portion and the second side portion, and the fastening baffle forms a swing with the positioning pin. The fire door lock combination structure of claim 11, wherein when the bolt protrudes between the first side portion and the second side portion, the buckle hook and the lock tongue are defined An accommodation space is provided for the stop seat to be received therein. The fire door lock combination structure of claim 11, wherein the lock tongue has a limit surface that can be blocked by the buckle baffle to limit the lock tongue to be reset. The fire door lock combination structure according to claim 11, wherein the lock base further has a top end, and the hook of the buckle baffle protrudes from the top end. A fire door lock combination structure according to the eleventh aspect of the patent application, wherein The buckle baffle comprises a body and at least one side plate protruding from the body, and the buckle is formed on the side plate body. The fire door lock combination structure according to claim 17, wherein the fastening baffle further has an abutting portion, wherein the abutting portion is formed on the side plate body. The fire door lock combination structure according to claim 18, wherein the abutting portion is a cantilever, and the cantilever is protruded from the side plate body. The lock bolt of the fire door lock according to the invention of claim 19, further comprising a joint pin, the bolt being pulled by the joint pin, the elastic member having a first end and a The second end is coupled to the abutting portion of the fastening baffle, and the second end is coupled to the coupling pin of the locking tongue set.