CN101382019A - Locking bolt structure of fireproof 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, a stop piece, an elastic piece and a linkage group, wherein the lock seat is provided with a bottom, the lock bolt is telescopically pivoted in the lock seat, the lock bolt is provided with a stop surface, the stop piece is swingably pivoted in the lock seat and is provided with a stop convex part, the elastic piece is arranged between the bottom of the lock seat and the stop piece and can prop against the stop piece, the stop convex part of the stop piece can be buckled on the stop surface of the lock bolt, and the linkage group is accommodated in the lock seat and is pivoted with the lock bolt. The invention can greatly reduce the bolt releasing force of the lock bolt structure to achieve quick bolt releasing, and can effectively prevent the fire door from being opened and prevent the fire from spreading.

Description

Lock bolt structure of fire door lock

technical field

The invention relates to a lock bolt, in particular to a lock bolt structure of a fireproof door lock which uses a stopper to control the expansion and contraction of the lock bolt and has a high-temperature self-locking function.

Background technique

The vertical lock bolts of the existing known world-type fireproof door locks are mainly pivotally arranged at the upper and lower ends of the fireproof door, and the upper and lower vertical lock bolts in the locked state usually can only be released by the action of a main lock body, such as China Taiwan Announcement Patent No. 149199 "Vertical Bolt Combination Structure of Fireproof Door Lock", which drives a vertical driving piece by pushing a pushing plate of a main lock body, so that a locking bolt is retracted into the lock shell and released. However, the above-mentioned vertical locking bolt uses a vertical driving piece to drive the clamping bolt, which requires a relatively large unbolting force. Therefore, it cannot meet the needs of fast unbolting during emergency evacuation. When facing a fire door, the above-mentioned vertical locking bolt structure is extremely vulnerable to failure due to the high temperature of the fire. Once the vertical locking bolt fails and is in an unbolted state, the fire door will not be able to prevent the fire from spreading and cause the disaster to expand.

Contents of the invention

The main purpose of the present invention is to overcome the defects in the prior art and provide a new type of bolt structure for fireproof door locks. Quick release, very suitable for practical use.

Another object of the present invention is to provide a new type of fire door lock bolt structure, the technical problem to be solved is that it can effectively prevent the fire door from being opened and prevent the fire from spreading, so that it 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. A lockbolt structure of a fireproof door lock according to the present invention comprises: a lock base having a bottom; a lock tongue which is telescopically pivoted in the lock base and has a stopper surface; a stopper, which is swingably pivoted in the lock seat, and has a stop protrusion; an elastic member, which is arranged between the bottom of the lock seat and the stopper, And can resist the stopper, and the stop convex part of the stopper can be buckled on the stop surface of the lock tongue; and a linkage group, which is accommodated in the lock seat and pivotally connected to the deadbolt.

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

The aforementioned lockbolt structure of a fireproof door lock, wherein the stopper has a first surface and a second surface opposite to the first surface, the elastic member is against the second surface, and the stopper The convex portion is protruded on the first surface.

In the aforementioned lockbolt structure of the fireproof door lock, the lock tongue further has an arc surface adjacent to the stop surface, and the stop protrusion of the stop member is capable of pressing against the lock tongue. Arc surface.

In the aforementioned lockbolt structure of the fireproof door lock, the lock tongue further has a stepped portion, the stepped portion is formed at the portion where the stop surface adjoins the arc surface, and the stopper of the stopper The convex part can be buckled on the stepped part.

The aforementioned lockbolt structure of a fireproof door lock, wherein the stopper has a first end and a second end opposite to the first end, and the first end is swingably pivoted In the lock seat, the blocking protrusion is formed between the first end and the second end.

In the aforementioned lockbolt structure of a fireproof door lock, the stopper has at least one fixing portion formed on the first end of the stopper.

In the bolt structure of the aforementioned fireproof door lock, the stopper has two fixing parts, each of which is protruded from the first surface of the stopper.

In the bolt structure of the aforementioned fireproof door lock, the stopper has two fixing parts, each of which is protruded from the second surface of the stopper.

The aforementioned lockbolt structure of the fireproof door lock further includes a fixing pin, and the fixing pin passes through and fixes the fixing part of the stopper on the lock seat.

In the bolt structure of the aforementioned fireproof door lock, the elastic member has a supporting end, and the supporting end is against the second surface of the stopper.

The aforementioned lockbolt structure of the fireproof door lock, wherein the bottom of the lock seat has a receiving groove, one end of the elastic member is arranged in the receiving groove at the bottom, and the other end is against the stop pieces.

In the bolt structure of the aforementioned fireproof door lock, the elastic member has an abutment end, and the abutment end is pressed against the bottom of the lock seat.

In the bolt structure of the aforementioned fireproof door lock, the elastic member has an abutment end, and the abutment end can be fixedly arranged on the bottom of the lock seat.

In the aforementioned lockbolt structure of a fireproof door lock, the lock seat further has a first side, a second side opposite to the first side, and a second side formed on the first side, the second The groove between the two sides and the bottom.

In the bolt structure of the aforementioned fireproof door lock, the first side portion and the second side portion are respectively formed with an oblique sliding groove, and each oblique sliding groove corresponds to each other and communicates with the groove portion.

The aforementioned lockbolt structure of the fireproof door lock further includes at least one self-locking part, and the self-locking part bridges each of the oblique sliding grooves on the first side part and the second side part.

The aforementioned lockbolt structure of the fireproof door lock further includes a pair of hot-melt parts, each of which is respectively fixed on the inclined chute of the first side and the second side, and each of the The hot melt part is to stop the self-locking part.

The aforementioned lockbolt structure of the fireproof door lock further includes a hot-melt element, which can pass through and be fixed on each of the oblique slide grooves on the first side and the second side, and the heat-melt Fused part is to stop the self-locking part.

In the bolt structure of the aforementioned fireproof door lock, each of the oblique slide grooves has a positioning hole, and the self-locking part can fall into each of the positioning holes and block the linkage group.

In the bolt structure of the aforementioned fireproof door lock, the interlocking group at least includes an intermediate link, and the self-locking part can block the intermediary link of the interlocking group.

The bolt structure of the aforementioned fireproof door lock further includes at least one self-locking part. The linkage group at least includes an intermediate link and a lower link. The self-locking part is a side.

The lock bolt structure of the aforementioned fireproof door lock further includes a hot-melt part, the hot-melt part is passed through and fixed on the lock base, and the self-locking part has a limiting end, and the limiting end is abutted against on the hot melt piece.

In the bolt structure of the aforementioned fireproof door lock, the first side portion and the second side portion are respectively formed with a longitudinal slide groove, and each of the longitudinal slide grooves corresponds to each other and communicates with the groove portion.

The aforementioned lockbolt structure of the fireproof door lock, wherein said additionally includes a joint pin and an adapter rod, and the joint pin is slidably bridged over each longitudinal direction of the first side part and the second side part. The chute, and the combination pin is connected to the lower link and the transfer rod of the linkage group.

In the aforementioned lockbolt structure of a fireproof door lock, the self-locking part can stop the combination pin.

In the bolt structure of the aforementioned fireproof door lock, the self-locking part has a limiting end, and the limiting end can stop the coupling pin.

The aforementioned lockbolt structure of the fireproof door lock further includes a return spring, which is pivotally arranged on one end of the deadbolt, and one end of the return spring is against the deadbolt.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from the above, in order to achieve the above object, the present invention provides a lock bolt structure of a fireproof door lock, which includes a lock base, a lock bolt, a stopper, an elastic member and a linkage group. The seat has a bottom, the lock tongue is telescopically pivoted in the lock seat, and the lock tongue has a stop surface, the stopper is swingably pivoted in the lock seat, and the The stopper has a stopper protrusion, the elastic member is arranged between the bottom of the lock seat and the stopper, and can withstand the stopper, and the stopper protrusion of the stopper The part can be buckled on the stop surface of the lock tongue, the linkage group is accommodated in the lock seat and pivotally connected to the lock tongue, when the fire door is opened by the main lock body of a fire door lock , an adapter rod is driven to move upward, and then drives the linkage group to pull down the bolt and retract it into the lock seat to unbolt. The present invention can greatly reduce the unbolt force of the lock structure to achieve fast unbolt .

A bolt structure of a fireproof door lock according to the present invention further includes a self-locking part and at least one hot-melt part. The hot-melt part is used to limit the self-locking part. At this time, the self-locking part will act so that the deadbolt cannot be retracted into the lock seat and unbolted. Since the self-locking part keeps the deadbolt in the locked state, it can effectively prevent the fire door from being opened and prevent the fire door from being opened. The fire spread.

By virtue of the above technical solution, the bolt structure of the fireproof door lock of the present invention has at least the following advantages and beneficial effects:

1. The unbolt force of the lock structure can be greatly reduced to achieve fast unbolt release.

2. It can effectively prevent the fire door from being opened and prevent the fire from spreading.

To sum up, the present invention has the above-mentioned many advantages and practical value, it has great improvement no matter in product structure or function, has significant progress in technology, and has produced easy-to-use and practical effect, and compared with existing The technology has the outstanding function of promotion, thereby being more suitable for practical use, and has extensive industrial application value, 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: According to the first preferred embodiment of the present invention, an exploded perspective view of a lockbolt structure of a fireproof door lock.

Fig. 2: According to the first preferred embodiment of the present invention, the combined perspective view of the lockbolt structure of the fireproof door lock.

Fig. 3A to Fig. 3C: According to the first preferred embodiment of the present invention, the action diagram of the lock bolt structure of the fireproof door lock.

Fig. 4: According to a specific embodiment of the present invention, a schematic diagram of the arrangement of a hot-melt element.

Fig. 5A to Fig. 5B: According to the first preferred embodiment of the present invention, the schematic diagram of the action of the self-locking part and the hot-melt part.

Fig. 6: According to the second preferred embodiment of the present invention, an exploded perspective view of a lockbolt structure of a fireproof door lock.

Fig. 7: According to the second preferred embodiment of the present invention, an assembled perspective view of the bolt structure of the fireproof door lock.

Fig. 8: According to another specific embodiment of the present invention, a schematic diagram of the structure of the lock bolt with the stepped portion of the lock tongue.

Fig. 9: According to the second preferred embodiment of the present invention, the sectional view of the bolt structure of the fireproof door lock.

Fig. 10: According to yet another specific embodiment of the present invention, a schematic diagram of the arrangement of a hot-melt element.

Fig. 11: According to yet another specific embodiment of the present invention, a structural schematic diagram of a lock bolt with a stopper buckled on the stepped portion.

Fig. 12A to Fig. 12B: According to the second preferred embodiment of the present invention, the schematic diagram of the action of the self-locking part and the hot-melt part.

10:Lock structure of fire door lock 11:Lock seat

11a: Top 111: Bottom

111a: inner side wall 111b: storage tank

112: the first side 112a: inclined chute

112b: positioning hole 112c: longitudinal chute

113: Second side part 113a: Inclined chute

113b: positioning hole 113c: longitudinal chute

114: Groove 12: Lock tongue

121: Stop surface 122: Arc surface

13: Stopper 13a: First surface

13b: the second surface 13c: the convex part of the stopper

131: first end 132: second end

133:Fixed part 134:Fixed pin

14: Elastic parts

151: Upper connecting rod 152: Intermediate connecting rod

153: Lower connecting rod 16: Transfer rod

17: Combined pin 18: Self-locking parts

19: Hot melt parts 20: Lock structure of fire door lock

21: Lock seat 21a: Top

211: Bottom 212: First side

212a: longitudinal chute 213: second side

213a: Longitudinal chute 214: Groove

22: Lock tongue 221: Stop surface

222: arc surface 223: step part

224: Return spring 23: Stopper

23a: The first surface 23b: The second surface

23c: stop convex part 231: first end

232: second end 233: fixed part

234: Fixed pin 24: Elastic piece

24a: abutment end

25: Linkage group 251: Upper link

252: Middle connecting rod 253: Lower connecting rod

26: Adapter rod 27: Coupling pin

28:Self-locking piece 28a:Limiting end

29: hot melt parts

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. 1 and Fig. 2, which is the first preferred embodiment of the present invention, a bolt structure 10 of a fireproof door lock includes a lock seat 11, a dead bolt 12, a stopper 13, An elastic member 14, a linkage group 15 and an adapter rod 16, the lock base 11 has a top end 11a, a bottom 111, a first side 112, a second side opposite to the first side 112 The side portion 113 and a groove portion 114 formed between the first side portion 112, the second side portion 113 and the bottom 111, the bottom 111 has an inner side wall 111a and a groove recessed on the inner side wall 111a The accommodating groove 111b, the first side portion 112 and the second side portion 113 are respectively formed with an oblique sliding groove 112a, 113a, each of the oblique sliding grooves 112a, 113a is corresponding to each other and communicates with the groove portion 114, and Each of the inclined chute 112a, 113a has a positioning hole 112b, 113b respectively, and the first side portion 112 and the second side portion 113 are also respectively formed with a longitudinal chute 112c, 113c, each of the longitudinal chute 112c, 113c correspond to each other and communicate with the groove portion 114. The lock tongue 12 is telescopically pivoted in the lock seat 11. In this embodiment, the lock tongue has a stop surface 121 and an adjacent The arc surface 122 of the stop surface 121, the stop member 13 is swingably pivoted in the lock seat 11, and the stop member 13 has a first surface 13a, a side opposite to the first surface The second surface 13b of 13a, a first end portion 131, a second end portion 132 opposite to the first end portion 131 and a stop formed between the first end portion 131 and the second end portion 132 The first end portion 131 of the blocking portion 13c is swingably pivoted in the lock seat 11. In this embodiment, the stopper 13 has at least one fixing portion 133, and the fixing portion 133 is formed on The first end portion 131, preferably, the stopper 13 has two fixing portions 133, and each of the fixing portions 133 is protruded from the first surface 13a, and a fixing pin 134 can also be used to pass through the first end portion 131. The fixing portion 133 of the stopper 13 is fixed on the lock base 11 so that the first end 131 is pivotally mounted in the lock base 11 , and the second end 132 protrudes from the lock base 11 The top end 11a of the stopper 13c is pressed against the arc surface 122 of the lock tongue 12. In this embodiment, the stopper convex portion 13c of the stopper 13 is protrudingly arranged A surface 13a, and preferably, the stop protrusion 13c does not protrude from the top end 11a of the lock seat 11 .

Please refer to Fig. 1, Fig. 2 and Fig. 3A, the elastic member 14 is arranged between the bottom 111 of the lock seat 11 and the stopper 13, and the elastic member 14 can withstand the stopper 13 of the second surface 13b, in this embodiment, the elastic member 14 is a compression spring, and one end of the elastic member 14 is the accommodating groove 111b that can be arranged on the bottom 111 of the lock seat 11, and the other end is against the stopper 13, the linkage group 15 is accommodated in the lock seat 11 and pivotally connected to the lock tongue 12, and the linkage group 15 includes an upper link 151 and a lower link 153 and an intermediate link 152 pivotally connected to the upper link 151 and the lower link 153, wherein the upper link 151 is pivotally connected to the deadbolt 12, and the two ends of the transfer rod 16 are respectively connected to the linkage The lower connecting rod 153 of group 15 and the main lock body (not shown in the figure) of a fireproof door lock, the main lock body of this fireproof door lock can drive the adapter rod 16, in the present embodiment, the lockbolt The structure 10 may further include a coupling pin 17, which is slidably bridged over the longitudinal sliding groove 112c of the first side portion 112 of the lock base 11 and the longitudinal sliding groove of the second side portion 113 113c, and the connecting pin 17 is connected to the lower connecting rod 153 and the connecting rod 16 of the linkage group 15 .

Please refer to Fig. 1, Fig. 2 and Fig. 3A again, in order to further improve the fire performance of the fireproof door lock, the lock bolt structure 10 may further include a self-locking part 18 and a pair of hot-melt parts 19, in this embodiment , the self-locking part 18 bridges the inclined sliding groove 112a of the first side part 112 of the lock seat 11 and the inclined sliding groove 113a of the second side part 113, and each of the hot melt parts 19 It is respectively fixed on the inclined sliding groove 112a of the first side part 112 and the inclined sliding groove 113a of the second side part 113, and each of the hot melt parts 19 blocks the self-locking part 18 to prevent The self-locking part 18 slides down to each of the positioning holes 112b, 113b. In this embodiment, each of the hot-melt parts 19 has a melting temperature and will melt after being heated. Or, please refer to FIG. 4 , in another embodiment, the latch structure 10 can also only use a hot melt element 19, and the hot melt element 19 can be passed through and fixed on the first side portion 112 and the The oblique slide grooves 112 a , 113 a of the second side portion 113 , and the hot-melt element 19 can also block the self-locking element 18 .

For the action of the bolt structure 10 of the fire door lock, please refer to FIG. 3A to FIG. 3C . First, please refer to FIG. 2 and FIG. 3A, which are schematic diagrams of the positions of the components when the lock bolt structure 10 is locked, wherein the lock tongue 12 protrudes from the top end 11a of the lock seat 11, and the elastic member 14 is Butt against the second surface 13b of the stopper 13, so that the stop protrusion 13c of the stopper 13 presses against the arc surface 122 of the lock tongue 12, as shown in FIG. 3B, when borrowed When the fire door is opened by the main lock body (not shown in the figure) of the fire door lock, the transfer rod 16 is driven to move upwards, and simultaneously the transfer rod 16 drives the lower connecting rod 153 to move up, and by When the lower link 153 moves up, the middle link 152 rotates counterclockwise to drive the upper link 151 to pull down the bolt 12 and retract into the lock seat 11 to unbolt. After the fire door is opened, the unbolt state is continuously maintained. The elastic member 14 is against the stopper 13, so that the stop convex portion 13c of the stopper 13 can be buckled on the stop surface 121 of the lock tongue 12, thereby limiting the lock tongue 12 at In the lock seat 11, please refer to FIG. 3C, when the fire door is closed, the stopper 13 is pushed to the bottom 111 of the lock seat 11 and compresses the elastic member 14, so that the bolt 12 The stop surface 121 is separated from the position limit of the stop protrusion 13 c of the stop member 13 , at this time, the lock tongue 12 will reset and protrude from the top end 11 a of the lock seat 11 , and return to the locked state.

In addition, regarding the operation of the self-locking element 18 and each of the hot-melt elements 19 , please refer to FIG. 5A to FIG. 5B . First, please refer to Fig. 1 and Fig. 5A, when the fire continues to hit the fire door, the temperature of the latch structure 10 of the fire door lock will continue to rise, when the temperature rises to the temperature of each of the hot melt parts 19 At the melting temperature, each of the hot melt parts 19 will melt. At this time, the oblique sliding groove 112a and the oblique sliding groove 112a of the second side portion 113 that bridge the first side portion 112 of the lock seat 11 The self-locking part 18 of the groove 113a will slide down to each of the positioning holes 112b, 113b. Please refer to FIG. 1 and FIG. Part 18 can stop the intermediate link 152 of the linkage group 15, so as to prevent the intermediate link 152 from rotating counterclockwise, and make the dead bolt 12 unable to retract into the lock seat 11 for unbolting, so that the It can prevent the fire door from being opened and prevent the fire from spreading, and greatly improves the fireproof performance of the lock bolt structure 10 of the fire door lock.

Please refer to Fig. 6 and Fig. 7, which is the second preferred embodiment of the present invention, a bolt structure 20 of a fireproof door lock includes a lock seat 21, a dead bolt 22, a stopper 23, An elastic member 24, a linkage group 25 and an adapter rod 26, the lock seat 21 has a top end 21a, a bottom 211, a first side 212, a second side opposite to the first side 212 Side 213 and a groove 214 formed between the first side 212, the second side 213 and the bottom 211, the first side 212 and the second side 213 are respectively formed with a longitudinal slide Grooves 212a, 213a, each of the longitudinal sliding grooves 212a, 213a is corresponding to each other and communicates with the groove portion 214. The lock tongue 22 is telescopically pivoted on the top end 21a of the lock seat 21. In this embodiment, the The lock tongue has a stop surface 221 and an arc surface 222 adjacent to the stop surface 221, or, please refer to FIG. 8, in another embodiment, the lock tongue 22 can also have a stepped portion 223, the stepped portion 223 is formed at the position where the stop surface 221 is adjacent to the arc surface 222, please refer to Fig. 6 and Fig. 7 again, the stop member 23 has a first surface 23a, an opposite On the second surface 23b of the first surface 23a, a first end 231, a second end 232 opposite to the first end 231, and a 232, the first end 231 is swingably pivoted in the lock seat 21. In this embodiment, the stopper 23 has at least one fixed portion 233, and the fixed The portion 233 is formed on the first end portion 231. Preferably, the stopper 23 has two fixing portions 233, and each of the fixing portions 233 is protruding from the second surface 23b. In addition, a The fixing pin 234 passes through and fixes the fixing portion 233 of the stopper 23 on the lock seat 21, so that the first end 231 is swingably pivoted in the lock seat 21, and the second end 232 protrudes On the top 21a of the lock seat 21, the stop protrusion 23c presses against the stop surface 221 of the lock tongue 22. In this embodiment, the stop protrusion 23c of the stop member 23 is It is protruded on the first surface 23 a, and preferably, the stop protrusion 23 c does not protrude from the top end 21 a of the lock seat 21 . In addition, in this embodiment, the latch structure 20 further includes a return spring 224 pivotally disposed on one end of the lock tongue 22 , and one end of the return spring 224 bears against the lock tongue 22 .

Please refer to FIG. 6 , FIG. 7 and FIG. 9 , the elastic member 24 is arranged between the bottom 211 of the lock seat 21 and the stopper 23 , and the elastic member 24 is against the stopper 23 The second surface 23b, in this embodiment, the elastic member 24 is a torsion spring, the elastic member 24 has an abutting end 24a and a supporting end 24b, the supporting end 24b is against the stopper 23 The second surface 23b, the abutting end 24a is pressed against the bottom 211 of the lock base 21, or, in another embodiment, the abutting end 24a is the Bottom 211, please refer to Fig. 6, Fig. 7 and shown in Fig. 9, this linkage group 25 is pivotally connected to this dead bolt 22, and this linkage group 25 is to comprise an upper link 251, a lower link 253 and a The upper link 251 and the middle link 252 of the lower link 253 are pivotally connected, wherein the upper link 251 is pivotally connected to the lock tongue 22, and the two ends of the connecting rod 26 are respectively connected to the linkage group 25 The lower connecting rod 253 and the main lock body (not shown in the figure) of the fire door lock, the main lock body of the fire door lock can drive the adapter rod 26, in this embodiment, the lock bolt structure 20 Can further comprise a combination pin 27, the combination pin 27 is slidably straddling each of the longitudinal slide grooves 212a, 213a of the first side 212 and the second side 213 of the lock base 21, and the combination The pin 27 is connected to the lower connecting rod 253 of the linkage group 25 and the connecting rod 26 .

Please refer to Fig. 6, Fig. 7 and Fig. 9 again, in order to further improve the fireproof performance of the fireproof door lock, the latch structure 20 may additionally include at least one self-locking part 28 and a hot-melt part 29, the self-locking part 28 is pivotally arranged on one side of the middle link 252 of the linkage group 25, and the self-locking part 28 has a position-limiting end 28a, and the hot-melt part 29 is passed through and fixed on the lock seat 21, and The hot melt part 29 has a melting temperature. In this embodiment, the hot melt part 29 runs through the self-locking part 28 to prevent the self-locking part 28 from rotating, or, please refer to FIG. 10 , in another In one embodiment, the hot-melt element 29 can be directly arranged on the limiting end 28a of the self-locking element 28 without passing through the self-locking element 28, because the limiting end 28a abuts against the thermal-melt element 29 , so the self-locking part 28 can also be prevented from rotating.

The action mode of the lockbolt structure 20 of this fire door lock is similar to that of the first preferred embodiment, please refer to Fig. 9 or shown in Fig. 10, when the main lock body (figure not drawn) When the fire door is opened, the transfer rod 26 is driven to move upwards, and at the same time the transfer rod 26 drives the lower connecting rod 253 to move upward, and the intermediate connecting rod 252 is reversed by the lower connecting rod 253 to move upward. The clockwise rotation drives the upper link 251 to pull down the deadbolt 22 and retracts into the lock seat 21 to unbolt. When the fire door is opened, in order to maintain the unbolted state continuously, the elastic member 24 pushes against the stopper 23, so that the stop convex portion 23c of the stopper 23 is buckled on the stop surface 221 of the lock tongue 22, thereby limiting the lock tongue 22 in the lock seat 21, or, please refer to FIG. 8 and FIG. 11, in another embodiment, the stop convex portion 23c of the stopper 23 is buckled on the stepped portion 223 of the lock tongue 22, please refer to FIG. 9 or FIG. 10 again, when When the fire door is closed, the stopper 23 is pushed to the bottom 211 of the lock seat 21 and compresses the elastic member 24, so that the stop surface 221 of the lock tongue 22 is separated from the stopper 23 of the stopper 23. At this time, the return spring 224 will push the lock tongue 22 to make the lock tongue 22 reset and protrude from the top end 21a of the lock seat 21 to restore the locked state. As for the action modes of the self-locking element 28 and the hot-melt element 29, please refer to FIG. 12A to FIG. 12B. First of all, please refer to Fig. 7 and Fig. 12A, when the fire continues to attack the fire door, the temperature of the latch structure 20 of the fire door lock will continue to rise, when the temperature rises to the melting of the hot melt part 29 temperature, the hot melt part 29 will melt, and at this moment, the self-locking part 28 rotates downward due to losing the limit of the hot melt part 29, and meanwhile, the limiting end 28a of the self-locking part 28 is opposite to The pin 27 should be combined, as shown in Figure 7 and Figure 12B, when the limiting end 28a of the self-locking part 28 corresponds to the combining pin 27, the limiting end 28a of the self-locking part 28 can stop the Combining pin 27 makes it unable to move, and directly restricts the transfer rod 26 from moving upwards and indirectly restricts the intermediate connecting rod 252 from rotating counterclockwise, so that the dead bolt 22 cannot be retracted into the lock seat 21 for unbolting, In this way, the fire door can be prevented from being opened and the fire can be prevented from spreading, and the fire performance of the bolt structure 20 of the fire door lock can be greatly 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 solutions of the present invention.

Claims (27)

1, a kind of bolt structure of fireproofing door lock is characterized in that it is to comprise:

One lock, it is to have a bottom;

One dead bolt, it is that telescopically is hubbed in this lock, and has a stop face;

One stop part, it is to be hubbed at swingably in this lock, and has a stop protuberance;

One elastic component, it is to be arranged between this bottom and this stop part of this lock, but and this stop part of contact, and this stop protuberance of this stop part is this stop surface that can be snapped in this dead bolt; And

One interlock group, it is to be placed in this lock and to be articulated in this dead bolt.

2, the bolt structure of fireproofing door lock according to claim 1, it is characterized in that wherein this stop part is to have a first surface and a second surface with respect to this first surface, this elastic component is this second surface of contact, and this stop protuberance is to be convexly set in this first surface.

3, the bolt structure of fireproofing door lock according to claim 2 it is characterized in that this dead bolt wherein has an arc surface that is adjacent to this stop surface in addition, and this stop protuberance of this stop part is to press this arc surface that touches this dead bolt.

4, the bolt structure of fireproofing door lock according to claim 3, it is characterized in that wherein this dead bolt has an end difference in addition, this end difference is to be formed at the position that this stop surface is adjacent to this arc surface, and this stop protuberance of this stop part is to be snapped in this end difference.

5, the bolt structure of fireproofing door lock according to claim 2, it is characterized in that wherein this stop part is to have a first end and a second end with respect to this first end, this first end is to be hubbed at swingably in this lock, and this stop protuberance is to be formed between this first end and this second end.

6, the bolt structure of fireproofing door lock according to claim 5 is characterized in that wherein this stop part is to have at least one fixed part, and this fixed part is this first end that is formed at this stop part.

7, the bolt structure of fireproofing door lock according to claim 6 is characterized in that wherein this stop part is to have two fixed parts, and respectively this fixed part is this first surface that is convexly set in this stop part.

8, the bolt structure of fireproofing door lock according to claim 6 is characterized in that wherein this stop part is to have two fixed parts, and respectively this fixed part is this second surface that is convexly set in this stop part.

9, the bolt structure of fireproofing door lock according to claim 5 is characterized in that it includes a steady pin in addition, this steady pin be wear fix this stop part this fixed part in this lock.

10, the bolt structure of fireproofing door lock according to claim 2 is characterized in that wherein this elastic component is to have a support end, and this support end is this second surface of this stop part of contact.

11, the bolt structure of fireproofing door lock according to claim 1 is characterized in that wherein this bottom of this lock is to have a storage tank, and an end of this elastic component is this storage tank that is arranged at this bottom, and the other end is this stop part of contact.

12, the bolt structure of fireproofing door lock according to claim 1 is characterized in that wherein this elastic component is to have an abutment end, and this abutment end is to press this bottom of touching in this lock.

13, the bolt structure of fireproofing door lock according to claim 1 is characterized in that wherein this elastic component is to have an abutment end, and this abutment end is this bottom that can be fixedly arranged on this lock.

14, the bolt structure of fireproofing door lock according to claim 1, it is characterized in that wherein this lock be have one first sidepiece in addition, second sidepiece and with respect to this first sidepiece is formed at the slot part between this first sidepiece, this second sidepiece and this bottom.

15, the bolt structure of fireproofing door lock according to claim 14 is characterized in that wherein this first sidepiece and this second sidepiece are to be formed with an oblique chute respectively, and respectively this oblique chute is corresponding mutually and is communicated with this slot part.

16, the bolt structure of fireproofing door lock according to claim 15 is characterized in that it includes at least one self-locking body in addition, and this self-locking body is cross-over connection respectively this oblique chute in this first sidepiece and this second sidepiece.

17, the bolt structure of fireproofing door lock according to claim 16, it is characterized in that it includes a pair of hot melt part in addition, respectively this hot melt part is respectively this oblique chute that is individually fixed in this first sidepiece and this second sidepiece, and respectively this hot melt part is this self-locking body of block.

18, the bolt structure of fireproofing door lock according to claim 16 is characterized in that it includes a hot melt part in addition, and this hot melt part is to wear respectively this oblique chute that is fixed in this first sidepiece and this second sidepiece, but and this hot melt part be this self-locking body of block.

19, the bolt structure of fireproofing door lock according to claim 16 is characterized in that wherein respectively this oblique chute is to have cave, a location respectively, and this self-locking body is to fall into respectively this cave, location and this interlock group of block.

20, the bolt structure of fireproofing door lock according to claim 19 it is characterized in that wherein this interlock group is to include an intermediate connecting rod at least, but this self-locking body is this intermediate connecting rod of this interlock group of block.

21, the bolt structure of fireproofing door lock according to claim 14 is characterized in that it includes at least one self-locking body in addition, and this interlock group is to comprise an intermediate connecting rod and a lower link at least, and this self-locking body is a side that is hubbed at this intermediate connecting rod.

22, the bolt structure of fireproofing door lock according to claim 21 is characterized in that it includes a hot melt part in addition, and this hot melt part is to wear to be fixed in this lock, and this self-locking body is to have a positive stop end, and this positive stop end is to be connected to this hot melt part.

23, the bolt structure of fireproofing door lock according to claim 21 is characterized in that wherein this first sidepiece and this second sidepiece are to be formed with a vertical chute respectively, and respectively this vertical chute is corresponding mutually and is communicated with this slot part.

24, the bolt structure of fireproofing door lock according to claim 23, it is characterized in that it includes one in addition in conjunction with a pin and an adapting rod, this is respectively this vertical chute in this first sidepiece and this second sidepiece of cross-over connection slidably in conjunction with pin, and should be this lower link and this adapting rod that connects this interlock group in conjunction with pin.

25, the bolt structure of fireproofing door lock according to claim 24, but it is characterized in that wherein this self-locking body is that block should be in conjunction with pin.

26, the bolt structure of fireproofing door lock according to claim 25 is characterized in that wherein this self-locking body is to have a positive stop end, is somebody's turn to do in conjunction with pin but this positive stop end is a block.

27, the bolt structure of fireproofing door lock according to claim 1 is characterized in that it includes a back-moving spring in addition, and this back-moving spring is an end that is hubbed at this dead bolt, and an end of this back-moving spring is this dead bolt of contact.

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