CN102619394A - Lock bolt structure of fire door lock - Google Patents

Abstract

The invention relates to a lock bolt structure of a fireproof door lock, which comprises a lock seat, a lock bolt group, a stop piece, an elastic piece, a linkage group and a fixed pin, wherein the lock seat is provided with a bottom part, a first side part, a second side part and a containing groove, the first side part is provided with a first sliding groove, the second side part is provided with a second sliding groove, the lock bolt group comprises a combination pin, the stop piece is arranged in the containing groove, the stop piece is provided with a baffle plate, a limiting groove and a butting part, the elastic piece is provided with a first end which touches and presses the butting part, the combination pin is pivoted with the linkage group and the lock bolt group, the two end parts of the combination pin are respectively arranged in the first sliding groove and the second sliding groove, the two end parts of the combination pin can be respectively limited in a first concave part and a second concave part, and the fixed pin is pivoted with the stop piece and the linkage group, and a first fixed end and a second fixed end of the fixing pin are respectively and fixedly connected with the first side part and the second side part.

Description

Lock bolt structure of fire door lock

technical field

The invention relates to a lock bolt structure of a fireproof door lock, in particular to a lockbolt structure of a fireproof door lock with functions of fire prevention and anti-theft.

Background technique

Existing known heaven and earth type fireproof door locks, such as China Taiwan Announcement No. 568160 New Patent, its deadbolt is mainly arranged on the upper and lower ends of the fireproof door, and is blocked by the stop seat arranged on the door frame to form a locked state , and the upper and lower vertical deadbolts in the locked state usually must be unbolted with the stop seat by the action of a main lock body. Please refer to Figure 1. The existing known fire door lock has a fire door lock that is arranged on a fire door The lock bolt structure 20 of 10 and a stop seat 40 arranged on a door frame 30, wherein the lock bolt structure 20 has at least a lock seat 21 and a lock bolt 22, and the lock bolt 22 has a stop surface 23 and a Corresponding to the limit surface 24 of the stop surface 23, the lock tongue 22 is telescopically arranged in the lock seat 21. When the lock bolt structure 20 and the stop seat 40 are in a locked state, the lock tongue 22 The blocking surface 23 is against the blocking seat 40 to prevent the fire door 10 from being opened. When the lock bolt structure 20 and the stop seat 40 are in the unlocked state, the dead bolt 22 is driven by a main lock body (not shown in the figure) and retracted into the lock seat 21. At this time, the dead bolt 22 It is not blocked by the stop seat 40, so that the fire door 10 can be opened. Please refer to Fig. 2, when the fire door 10 is opened and is to be closed again, the dead bolt 22 resets and protrudes from the lock seat 21 because it is not driven by the main lock body, and the dead bolt 22 must pass through Only the blocking seat 40 can form the locked state again. Usually, the fire door 10 is pushed by a door closer (not shown in the figure), so when the thrust of the door closer is insufficient, the fire door 10 cannot be pushed to make the bolt When 22 passes through the stop seat 40, the stop seat 40 will collide with the limit surface 24 of the lock bolt 22, causing the lock bolt structure 20 and the stop seat 40 to form an unlocked state, that is, the fire door 10 is still an open state, thereby losing fire prevention and anti-theft functions.

In addition, please refer to FIG. 1 , the lock tongue 22 of the lock bolt structure 20 can be easily pressed into the lock seat 21 by a thief with a tool, so that the lock bolt structure 20 and the stop seat 40 form a It is unlocked, so the anti-theft function is lost.

This shows that the bolt structure of above-mentioned existing fireproof door lock obviously still has inconvenience and defect in structure and use, and needs to be further improved urgently. In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. urgent problem to be solved. Therefore, how to create a bolt structure of a fire-resistant door lock with a new structure is one of the current important research and development topics, and has also become a goal that the industry needs to improve.

In view of the defects in the bolt structure of the above-mentioned existing fireproof door locks, the inventor actively researches and innovates based on his rich practical experience and professional knowledge in the design and manufacture of such products for many years, and cooperates with the application of theories, in order to create a The lock bolt structure of the fireproof door lock of a kind of novel structure can improve the lockbolt structure of general existing fireproof door lock, makes it more practical. Through continuous research, design, and after repeated trial samples and improvements, the present invention with practical value is finally created.

Contents of the invention

The main purpose of the present invention is to overcome the defects existing in the bolt structure of the fireproof door lock and provide a new type of fireproof doorlock bolt structure. The technical problem to be solved is to provide a fireproof doorlock. The lock bolt structure includes a lock seat, a lock tongue group, a stopper, an elastic member, a linkage group and a fixed pin. The lock seat has a bottom, a first side, a first Two side parts and an accommodating groove jointly surrounded and defined by the bottom, the first side part and the second side part, the first side part has a first chute, and the second side part has a second side part The lock tongue set includes a lock tongue and a joint pin, the lock tongue is swingably pivoted in the receiving groove of the lock seat, and the lock tongue is pulled by the joint pin to The lock tongue can be telescopically passed between the first side part and the second side part, the stopper is swingably arranged in the accommodating groove of the lock seat, and the linkage group is arranged in the accommodating groove slot, the linkage group has at least one first linkage piece, the joint pin is pivotally connected to the first linkage piece and the bolt group, and the joint pin has a first end and a second end part, the first end and the second end are respectively slidably arranged in the first chute and the second chute, and the first end can be limited to a first chute of the first chute. a recess, the second end can be limited to a second recess of the second chute, the fixing pin is pivotally connected to the stopper and the first linkage of the linkage group, the fixing pin has A first fixed end and a second fixed end, the first fixed end and the second fixed end are fixedly connected to the first side part and the second side part respectively. According to the present invention, the first end of the coupling pin is limited to the first concave portion of the first chute, and the second end of the coupling pin is limited to the second concave portion of the second chute, Therefore, when a thief intends to press the deadbolt into the lock seat with a tool, the deadbolt is limited to the first end and the second end of the coupling pin respectively at the first end of the first chute. The recess and the second recess of the second chute cannot be retracted into the lock seat, so as to effectively improve the anti-theft function of the lock bolt structure, which is very suitable for practical use.

Another object of the present invention is to provide a new structure of a fireproof door lock bolt structure. The technical problem to be solved is to provide a fireproof door lock bolt structure, wherein the stopper has a baffle plate, A limiting groove and an abutting portion located below the baffle, the elastic member has a first end, the first end is the abutting portion that presses the stopper, the limiting groove is corresponding to the lock Tongue, when the fire door is opened, the deadbolt is retracted into the lock seat, and the elastic member drives the stopper with elastic force, so that the stopper swings toward the deadbolt, and makes the deadbolt accommodate Placed in the limit groove of the stopper, and the baffle plate of the stopper is against a limit surface of the lock tongue, so that when the fire door is opened and then closed again, the lock tongue can pass through A stop seat arranged on a door frame is not blocked by the stop seat, and after the deadbolt passes through the stop seat, the stop seat pushes the stop member so that the dead bolt is disengaged from the stop seat. The limit groove of the stopper is reset and protrudes from the lock seat to form a locked state, which is more suitable for practical use.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. According to the present invention, it includes: a lock seat, which has a bottom, a first side, a second side and a joint defined by the bottom, the first side and the second side the accommodation groove; a linkage group, which is arranged in the accommodation groove, the linkage group has at least one first linkage member; a fixed pin, which is pivotally connected to the first linkage member of the linkage group, The fixing pin has a first fixed end and a second fixed end, and the first fixed end and the second fixed end are fixedly connected to the first side part and the second side part respectively; a bolt group, which includes There is a deadbolt, at least one linkage plate, a bolt and a joint pin, the bolt pivotally connects the deadbolt and the linkage plate, the joint pin pivotally connects the linkage plate and the first linkage, and the bolt and the first linkage The fixing pins jointly define a connecting line, the lock tongue is pivotally arranged in the receiving groove of the lock base in a swingable manner, and the lock tongue is pulled by the joint pin so that the lock tongue can telescopically pass through the between the first side and the second side; and as the deadbolt swings out between the first side and the second side, the coupling pin moves toward the bottom of the lock seat until the coupling pin is positioned at Or after crossing the connecting line, even if the coupling pin stops moving.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned lockbolt structure of the fireproof door lock, the first side of the lock seat has a first slide groove, the second side of the lock seat has a second slide groove, and the first slide groove of the joint pin One end portion and the second end portion are slidably arranged in the first sliding groove and the second sliding groove respectively.

The aforementioned lockbolt structure of the fireproof door lock, wherein the first chute further has a first recess, the second chute further has a second recess, and the first recess and the second recess are adjacent to the stop The plate, the combination pin has a first end and a second end, the first end of the combination pin can be limited in the first recess, and the second end can be limited in the second recess.

The aforementioned lockbolt structure of the fireproof door lock, wherein the first side of the lock seat also has a first installation hole, the second side of the lock seat has a second installation hole, and the first 2. The second mounting hole is for the first fixed end and the second fixed end of the fixed pin to be respectively inserted and fixed therein. The first and second sliding grooves are arc-shaped, and their arc-shaped indentations are respectively facing the first, second, and second mounting holes. Two mounting holes.

The aforementioned lockbolt structure of the fireproof door lock further includes a stopper, which is swingably arranged in the accommodating groove of the lock seat, and the stopper has a baffle, a A limiting groove under the plate and an abutting portion, the limiting groove corresponds to the deadbolt.

The aforementioned lockbolt structure of the fireproof door lock, wherein the stopper has at least one side plate, the side plate protrudes from the baffle plate, and the side plate has a limiting groove, and the coupling pin can is limited in the limiting groove.

The aforementioned lockbolt structure of the fireproof door lock further includes an elastic member, which is arranged in the accommodating groove of the lock seat, and the elastic member has a first end, and the first end touches the The abutting portion of the stopper.

In the aforementioned lockbolt structure of a fireproof door lock, the lock tongue has a limiting surface, the locking tongue can be limited in the limiting groove of the stopper, and the baffle plate abuts against the limiting surface.

In the aforementioned lockbolt structure of the fireproof door lock, the elastic member is a torsion spring, and it also has a cylindrical portion set on the fixing pin.

In the bolt structure of the aforementioned fireproof door lock, the elastic member further has a second end, and the second end is combined with the combination pin of the deadbolt set.

In the aforementioned lockbolt structure of a fireproof door lock, the abutting portion is a cantilever protruding from the side plate.

By virtue of the above-mentioned technical solution, the bolt structure of the fireproof door lock of the present invention has at least the following advantages and beneficial effects: the present invention has both fireproof and antitheft functions, and is indeed a novel, progressive and practical new structural design.

To sum up, the present invention relates to a bolt structure of a fireproof door lock, which includes a lock seat, a bolt group, a stopper, an elastic member, a linkage group and a fixed pin. The lock seat has a bottom, a first side, a second side and an accommodating groove, the first side has a first sliding groove, the second side has a second sliding groove, The bolt group includes a combination pin, the stopper is arranged in the accommodating groove, the stopper has a baffle plate, a limit groove and an abutting part, and the elastic member has a touch Pressing the first end of the abutting portion, the joint pin is pivotally connected to the linkage group and the bolt group, and the two ends of the joint pin are respectively arranged on the first chute and the second chute, the The two ends of the joint pin can be respectively limited to a first recess and a second recess, the fixed pin is pivotally connected to the stopper and the linkage group, and a first fixed end of the fixed pin and a The second fixed end is fixedly connected to the first side part and the second side part respectively. The present invention has significant progress in technology, and has obvious positive effects, and is a novel, progressive and practical new design.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic view of a lock bolt and a stop seat of a known fire door lock in a locked state.

Fig. 2 is a schematic diagram of a lock bolt and a stop seat of a known fire door lock in an unlockable state.

Fig. 3 is an assembled perspective view of a preferred embodiment of the bolt structure of the fireproof door lock according to the present invention.

Fig. 4 is an exploded perspective view of a preferred embodiment of the bolt structure of the fireproof door lock according to the present invention.

Fig. 5 is a combined bottom perspective view of a preferred embodiment of the bolt structure of the fireproof door lock according to the present invention.

Fig. 6 is a schematic diagram of the lock bolt structure and the stop seat of the fire door lock in a locked state according to a preferred embodiment of the present invention.

Fig. 7 is a schematic perspective view of the lock bolt structure and the stop seat of the fire door lock in a locked state according to a preferred embodiment of the present invention.

Fig. 8 is a cross-sectional perspective view of the lock bolt structure and the stop seat of the fire door lock in a locked state according to a preferred embodiment of the present invention.

Fig. 9 is a schematic diagram of the lock bolt structure and the stop seat of the fire door lock according to another preferred embodiment of the present invention.

Fig. 10 is a schematic diagram of an unlocked state formed by the lock bolt structure and the stop seat of the fire door lock according to a preferred embodiment of the present invention.

Fig. 11 is a schematic perspective view of a lock bolt structure and a stop seat of the fire door lock in an unlocked state according to a preferred embodiment of the present invention.

Fig. 12 is a cross-sectional perspective view of the lock bolt structure and the stop seat of the fire door lock in an unlocked state according to a preferred embodiment of the present invention.

100: Lock bolt structure of fire door lock 110: Lock seat

111: Bottom 112: First side

112a: the first chute 112b: the first recess

112c: first mounting hole 113: second side

113a: the second chute 113b: the second recess

113c: Second mounting hole 114: Accommodating groove

115: Longitudinal chute 120: Lock bolt group

121: Lock tongue 121a: Stop surface

121b: Limiting surface 122: Combining pin

122a: first end 122b: second end

123: Linkage plate 124: Latch

130: Stopper 131: Baffle

132: Limiting slot 133: First side plate

133a: The first limiting groove 134: The second side plate

134a: Second limiting groove 135: Abutting part

135a: Groove 140: Elastic piece

141: First end 142: Second end

143: Cylindrical part 150: Linkage group

151: The first linkage 152: The second linkage

160: fixed pin 161: first fixed end

162: Second fixed end 170: Adapter rod

180: pivot rod 181: end

200: fire door 300: door frame

400: stop seat L: connecting line

10: fire door 20: lock bolt structure

21: Lock seat 22: Lock tongue

23: Stopping surface 24: Limiting surface

30: door frame 40: stop seat

Detailed ways

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure and characteristics of the lock bolt structure of the fireproof door lock proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. And its effect, detailed description is as follows.

Please refer to Fig. 3, Fig. 4 and Fig. 5, which is a preferred embodiment of the present invention, a bolt structure 100 of a fireproof door lock includes a lock seat 110, a bolt group 120, and a stopper 130 , an elastic member 140, a linkage group 150 and a fixed pin 160, the lock seat 110 has a bottom 111, a first side 112, a second side 113 and a bottom 111, the first The side portion 112 and the second side portion 113 jointly surround and define the accommodating groove 114, the first side portion 112 has a first slide groove 112a and a first mounting hole 112c, and the second side portion 113 has a A second chute 113a and a second mounting hole 113c, the fixed pin 160 has a first fixed end 161 and a second fixed end 162, and the first and second mounting holes 112c, 113c are for the fixed pin The first fixed end 161 and the second fixed end 162 of 160 are respectively inserted and fixed therein, the first and second slide grooves 112a, 113a are arc-shaped, and their arc-shaped concaves are respectively facing the first and second mounting holes. 112c, 113c, the first chute 112a has a first recess 112b, the second chute 113a has a second recess 113b, the first recess 112b and the second recess 113b are adjacent to the lock seat 110 of the bottom 111 .

The deadbolt group 120 includes a deadbolt 121, a joint pin 122, at least one linkage plate 123 and a latch 124. In this embodiment, the number of the linkage plate 123 is two pieces, and the two linkage The plate 123 and the dead bolt 121 pass through the latch 124 so that the two interlocking plates 123 and the dead bolt 121 form an interlocking state. The limiting surface 121b of the surface 121a, the coupling pin 122 has a first end portion 122a and a second end portion 122b, and the first end portion 122a and the second end portion 122b are slidably arranged on the first end portion 122b respectively. chute 112a and the second chute 113a, the lock tongue 121 is swingably pivoted in the receiving groove 114 of the lock seat 110, and the lock tongue 121 is pulled by the coupling pin 122, so that the The locking tongue 121 can telescopically pass through between the first side portion 112 and the second side portion 113, and the stopper 130 is swingably arranged in the receiving groove 114 of the lock base 110. The stopper 130 has a baffle 131 , a limiting slot 132 below the baffle 131 , a first side plate 133 protruding from the baffle 131 , and a second side plate 134 opposite to the first side plate 133 and an abutting portion 135, the first side plate 133 has a first limiting groove 133a, the second side plate 134 has a second limiting groove 134a, the first and second limiting grooves 133a, 134a can allow the binding pin 122 to slide into the limiting position.

In this embodiment, the length of the baffle plate 131 is shorter than the length of the first and second side plates 133, 134, so that the baffle plate 131 cannot be completely connected with the first and second side plates 133, 134, leaving a space, thereby The limiting groove 132 is formed, the abutment portion 135 is a cantilever protruding from the first side plate 133, and the cantilever is facing the second side plate 134, the limiting groove 132 is corresponding to the locking tongue 121 , the lock tongue 121 can be stopped by the baffle plate 131 of the stopper 130 and accommodated in the limiting groove 132, the elastic member 140 is arranged in the accommodating groove 114 of the lock base 110 and The stopper 130 is driven by elastic force.

In this embodiment, the elastic member 140 is a torsion spring, which has a cylindrical portion 143 set on the fixing pin 160, a first end 141 and a second end 142, the first end 141 is Press the abutting portion 135 of the stopper 130 so that the stopper 130 swings toward the lock tongue 121. In this embodiment, the abutment 135 has a groove 135a, and the elastic member 140 The first end 141 of the elastic member 140 is combined with the groove 135 a, and the second end 142 of the elastic member 140 is combined with the combination pin 122 of the locking tongue set 120 .

The linkage group 150 is disposed in the accommodation groove 114, the linkage group 150 has at least one first linkage piece 151, and the joint pin 122 is pivotally connected to the first linkage piece 151 and the lock tongue set. 120. In this embodiment, the number of the first linkages 151 is two, and the two linkage plates 123 are located between the two first linkages 151, and the two first linkages 151 It is also located between the first and second side plates 133, 134, and the joint pin 122 passes through the two linkage plates 123 and the two first linkage pieces 151, so that the two linkage plates 123 and The two first linkage members 151 are in a pivotal connection state.

When the lock tongue 121 protrudes from the lock seat 110, the first end 122a of the coupling pin 122 can be limited to the first recess 112b of the first slide groove 112a, and the second end 122b can be is limited to the second concave portion 113b of the second sliding groove 113a, so the coupling pin 122 can achieve a better limiting effect and is not easy to disengage. At the same time, the first end 122a of the coupling pin 122 can also be limited. Located on the first limiting groove 133a of the first side plate 133, the second end portion 122b can also be limited to the second limiting groove 134a of the second side plate 134, so as to avoid the lock tongue 121 The lock seat 110 is retracted into the lock seat 110 by an improper external force, resulting in an unlocked state.

The fixing pin 160 is pivotally connected to the stopper 130 and the two first linkages 151 of the linkage group 150, that is, the first and second side plates 133, 134 of the stopper 130 are located at the second Between a linkage 151, the first fixed end 161 and the second fixed end 162 are fixedly connected to the first side 112 and the second side 113 of the lock base 110 respectively, and the fixed pin 160 It passes through the first and second side plates 133, 134 of the two first linkages 151 and the stopper 130, so that the two first linkages 151 and the first and second side plates 133, 134 forms a pivoted linkage state. In this embodiment, the bolt structure 100 of the fire door lock further has a connecting rod 170 , and one end of the connecting rod 170 is pivotally connected to the linkage group 150 .

Please refer to Fig. 3, Fig. 4 and Fig. 5 again, the latch structure 100 of the fire door lock has a pivot rod 180 in addition, the linkage group 150 has a second linkage 152 in addition, and the first 1. The two linkages 151 and 152 are pivotally connected to each other, and the pivot rod 180 is pivotally connected to the second linkage 152 and the connecting rod 170 . In addition, the first side portion 112 and the second side portion 113 of the lock base 110 respectively have a longitudinal sliding groove 115, the pivot rod 180 has two ends 181, and each end 181 is slidably disposed on each The longitudinal chute 115 .

Please refer to Fig. 6, the bolt structure 100 of the fire door lock is arranged on a fire door 200, and the bolt structure 100 of the fire door lock forms a locked state with a stop seat 400 arranged on a door frame 300, please refer to Fig. 4, Fig. 6, Fig. 7 and Fig. 8, wherein the dead bolt 121 of the dead bolt set 120 protrudes from the lock base 110, and the stop seat 400 is located between the dead bolt 121 and the stop member 130 Between, the stop seat 400 can block the lock tongue 121 to prevent the fire door 200 from being opened, wherein the coupling pin 122 is pivotally connected to the two first linkage members 151 and the two linkage plates 123, and The first end 122a of the coupling pin 122 is limited to the first recess 112b, and the second end 122b is limited to the second recess 113b. When the locking tongue 121 is pressed by an improper external force, it will Generate a thrust and want to push the dead bolt 121 into the lock seat 110. Please refer to FIG. The connecting line L of the fixing pin 160, that is, the moving direction of the coupling pin 122 under force, cannot move upwards along the first chute 112a and the second chute 113a against the trend, but only slides down toward the lock seat 110 the bottom 111, but at this time the first end 122a of the joint pin 122 is in contact with the first recess 112b, and the second end 122b is in contact with the second recess 113b, and it is no longer possible to make the joint pin 122 along the The first and second chute 112a, 113a move counterclockwise toward the bottom 111 of the lock seat 110, so the lock tongue 121 will no longer be pushed into the lock by the coupling pin 122 In the seat 110, the coupling pin 122 and the two linkage plates 123 support the lock tongue 121, so as to prevent the lock tongue 121 from being retracted into the lock seat 110 by an improper external force, resulting in an unlocked state.

In addition, the first end 122a of the coupling pin 122 can also touch the first limiting groove 133a of the first side plate 133 , and the second end 122b can also touch the second side plate 134 Therefore, the coupling pin 122 will not be disengaged from the first and second limiting grooves 133a, 134a by the lock tongue 121, ensuring that the lock tongue 121 cannot Pushed inwardly by external force, it can effectively prevent the lock tongue 121 from being retracted into the lock seat 110 by improper external force, resulting in an unlocked state.

Please refer to FIG. 9 , another implementation structure is to make the coupling pin 122 slide along the first and second slide grooves 112a, 113a, and only slide to the position where the coupling pin 122 is located on the connecting line L, even if the The coupling pin 122 stops sliding. At this time, when the dead bolt 121 is pressed by an improper external force, the force moving direction of the coupling pin 122 is towards the fixed pin 160, and the coupling pin 122 cannot move along the first and second pins. The chute 112a, 113a slides forward or backward, so the lock tongue 121 will no longer be pushed into the lock seat 110 by the coupling pin 122, resulting in an unlocked state.

Please refer to Fig. 10, which is a schematic diagram of the lock bolt structure 100 of the fire door lock and the stop seat 400 forming an unlocked state, please refer to Fig. 4, Fig. 10, Fig. 11 and Fig. 12. The pivoting rod 180 moves up along each of the longitudinal chute 115, and simultaneously drives the second linkage 152 of the linkage group 150 to pivot toward the bottom 111 of the lock base 110. At this time, due to the second A linkage 151 and a second linkage 152 are pivotally connected to each other, so the two first linkages 151 are also pivoted in linkage, thereby making the two first linkages 151 and the fixed pin 160 Swing for the rotation axis, because the coupling pin 122 is pivotally connected to the two first linkage members 151 of the linkage group 150 and the two linkage plates 123 of the bolt group 120, and is limited in the first slide groove 112a and the second chute 113a, so when the coupling pin 122 is driven by the two first linkages 151, the coupling pin 122 moves outward along the first chute 112a and the second chute 113a , so that the first end 122a of the coupling pin 122 is disengaged from the first concave portion 112b, the second end 122b of the coupling pin 122 is disengaged from the second concave portion 113b, and the coupling pin 122 simultaneously drives the two Linkage plate 123, and drive this lock tongue 121 with these two linkage plates 123, make this lock tongue 121 retract in this lock base 110, at the same time, due to this first, two ends 122a, 122b of this coupling pin 122 It is separated from the first and second recesses 112b, 113b, so that the fastening baffle 130 is no longer limited by the joint pin 122, and because of the elastic recovery force of the elastic member 140, the stop can be made The stopper 130 swings toward the lock tongue 121 with the fixed pin 160 as the rotation axis, and the lock tongue 121 is accommodated in the limiting groove 132 of the stopper 130 , and the baffle of the stopper 130 131 is against the limit surface 121b of the lock tongue 121, so as to prevent the lock tongue 121 from resetting and protruding from the lock seat 110, so that after the fire door 200 is opened, when it is to be closed again, the lock tongue 121 can Pass through the stop seat 400 without being blocked by the stop seat 400 .

When it is to be closed again, after the lock tongue 121 passes the stop seat 400, the stop seat 400 pushes the stop member 130, so that the lock tongue 121 is disengaged from the limiting groove 132 of the stop member 130 At this time, the dead bolt 121 can reset and protrude from the lock seat 110, and the stop seat 400 is located between the dead bolt 121 and the stopper 130 to form a locked state .

When the lock bolt structure 100 of the fireproof door lock of the present invention is in the locked state, the first end 122a and the second end 122b of the coupling pin 122 are respectively restricted in the first recess of the first sliding groove 112a 112b and the second concave portion 113b of the second sliding groove 113a, so the coupling pin 122 can achieve a better limiting effect and is not easy to disengage, or, the first end 122a and the second end of the coupling pin 122 The portion 122b is respectively limited in the first limiting groove 133a of the first side plate 133 and the second limiting groove 134a of the second side plate 134, and the first end portion 122a of the coupling pin 122 is against the first recess 112b or the first limiting groove 133a, and the second end 122b is against the second recess 113b or the second limiting groove 134a, so that the lock tongue 121 cannot be touched by improper external force Press and shrink into the lock seat 110 to form an unlocked state, thus effectively improving the anti-theft function of the lock bolt structure 100 . In addition, when the fire door 200 is opened, the lock tongue 121 of the lock tongue set 120 retracts into the lock seat 110, the stopper 130 swings toward the lock tongue 121 with the fixed pin 160 as the rotation axis, and The lock tongue 121 is accommodated in the limiting groove 132 of the stopper 130, and the baffle plate 131 of the stopper 130 is against the limit surface 121b of the lock tongue 121, when the fire door 200 After being opened, when it is to be closed again, since the baffle plate 131 of the stopper 130 is in contact with the limiting surface 121b of the dead bolt 121, the dead bolt 121 can easily pass through the stop seat 400, and in the After the lock tongue 121 passes through the stop seat 400, the stop seat 400 pushes the stop member 130, so that the lock tongue 121 is separated from the limiting groove 132 of the stop member 130, so that the lock tongue 121 can be reset And protruding from the lock seat 110 to form a locked state again, so the anti-theft and fire prevention functions of the lock bolt structure 100 can be effectively improved.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solution of the present invention.

Claims (11)

1. A bolt structure of a fireproof door lock, characterized in that it comprises: A lock base, which has a bottom, a first side, a second side, and an accommodating groove jointly surrounded and defined by the bottom, the first side, and the second side; a linkage group, which is arranged in the accommodating groove, and the linkage group has at least one first linkage member; A fixed pin, which is pivotally connected to the first linkage member of the linkage group, the fixed pin has a first fixed end and a second fixed end, and the first fixed end and the second fixed end are respectively fixed on the first side and the second side; A deadbolt group, which includes a deadbolt, at least one link plate, a bolt and a combination pin, the bolt pivotally connects the lock tongue and the link plate, and the combination pin pivotally connects the link plate and the first link The moving part, and the bolt and the fixed pin jointly define a connecting line, the dead bolt is pivotally arranged in the receiving groove of the lock seat in a swingable manner, and the dead bolt is pulled by the combining pin, so that the lock The tongue can be telescopically passed between the first side portion and the second side portion; and As the dead bolt swings out between the first side and the second side, the coupling pin moves toward the bottom of the lock seat until the coupling pin is located at or crosses the connecting line, even if the coupling pin stops moving . 2. The bolt structure of the fireproof door lock according to claim 1, characterized in that the first side of the lock base has a first slide groove, and the second side of the lock base has a second slide groove, A first end portion and a second end portion of the coupling pin are slidably arranged in the first slide slot and the second slide slot respectively. 3. The bolt structure of fireproof door lock according to claim 2, characterized in that the first chute further has a first recess, the second chute further has a second recess, the first recess and the first chute A second recess is adjacent to the baffle, the first end of the coupling pin can be limited in the first recess, and the second end can be limited in the second recess. 4. The bolt structure of fire door lock according to claim 2, characterized in that the first side of the lock seat has a first installation hole, and the second side of the lock seat has a second installation hole. hole, and the first and second mounting holes are for the first fixed end and the second fixed end of the fixed pin to be inserted and fixed respectively, the first and second chute are arc-shaped, and the arc-shaped concave is facing the first and second mounting holes respectively. 5. The bolt structure of the fireproof door lock according to claim 1, characterized in that it further comprises a stopper, which is swingably arranged in the accommodating groove of the lock seat, and the stopper has a stop plate, a limiting groove located below the baffle plate and an abutting portion, the limiting groove corresponds to the lock tongue. 6. The bolt structure of a fireproof door lock according to claim 5, characterized in that the stopper further has at least one side plate, the side plate protrudes from the baffle plate, and the side plate also has a limiting recess slot, the coupling pin can be limited in the limiting groove. 7. The bolt structure of a fireproof door lock according to claim 5, further comprising an elastic member disposed in the accommodating groove of the lock seat, the elastic member has a first end, the The first end presses the abutting portion of the stopper. 8. The bolt structure of fireproof door lock according to claim 5, characterized in that the deadbolt has a limit surface, the deadbolt can be limited in the limit groove of the stopper, and the baffle plate conflict with the limiting surface. 9 . The bolt structure of a fireproof door lock according to claim 7 , wherein the elastic member is a torsion spring, and further has a cylindrical portion set on the fixing pin. 10 . 10 . The bolt structure of a fireproof door lock according to claim 7 , wherein the elastic member further has a second end, and the second end is combined with the coupling pin of the deadbolt set. 11 . 11. The bolt structure of a fireproof door lock according to claim 6, wherein the abutting portion is a cantilever protruding from the side plate.

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