CN209620813U - A kind of fireproof door push lever lock safety structure - Google Patents

Abstract

The utility model belongs to fire resistant doorsets technical field, refers in particular to a kind of fireproof door push lever lock safety structure.Including bottom plate, and the bracket on bottom plate is set, the first rotation hole and the second rotation hole are offered on the side wall of the bracket, big lock tongue and small lock tongue are rotatably connected to by the first pin in first rotation hole, safety block is rotatably connected to by the second pin in second rotation hole, it is characterized in that, the safety block is between big lock tongue and small lock tongue, the front end of the safety block is formed with arc chute, the front end of the safety block is formed with limit angle, the first lock pin matched with the arc chute is formed on the side wall of the small lock tongue, it is formed on the side wall of the big lock tongue and mutually matched second lock pin of the limit angle.The safety structure makes fire resistant doorsets in improper opening, can not be by applying external force to big lock tongue, and the push-rod lock made is forcibly opened, and ensure that the security performance of fire resistant doorsets and push-rod lock.

Description

A kind of fireproof door push lever lock safety structure

Technical field

The utility model belongs to fire resistant doorsets technical field, refers in particular to a kind of fireproof door push lever lock safety structure.

Background technique

Fire resistant doorsets refer to is able to satisfy the door that fire stability, integrality and thermal insulation require within a certain period of time.It is to set There are the fire protection separators of certain fire resistance in fire protection interval, emergency staircase, vertical shaft etc..Fire resistant doorsets are in off position When, generally require the push rod of push-rod lock is pressed or using key by way of fire resistant doorsets are opened, if using by force The mode of destruction just destroys the lock box on fire resistant doorsets top with regard to needs, by the way that big lock tongue to be pressed into inside locking bolt by force Mode door can just be opened, to avoid thief or other ambitious peoples from destroying fire resistant doorsets, push-rod lock just needs to set Corresponding safety structure is set, the very mode of fire resistant doorsets is avoided to open.

Summary of the invention

The utility model can not pass through improper side in view of the above-mentioned problems, when providing a kind of fire resistant doorsets in off position Big lock tongue is pushed back the fireproof door push lever lock safety structure inside locking bolt by formula.

Purpose of the utility model is realized as follows:

A kind of fireproof door push lever lock safety structure, including bottom plate, and the bracket being arranged on bottom plate, the side of the bracket It offers the first rotation hole and the second rotation hole on wall, big lock tongue and small is rotatably connected to by the first pin in the first rotation hole Lock tongue is rotatably connected to safety block by the second pin in the second rotation hole, the safety block be located at big lock tongue and small lock tongue it Between, the front end of the safety block is formed with arc chute, and the front end of the safety block is formed with limit angle, the small lock tongue It is formed with the first lock pin matched with the arc chute on side wall, is formed on the side wall of the big lock tongue and the limit Mutually matched second lock pin in angle；

When the small lock tongue is rotated using the first rotation hole as axle center inwards, first lock pin is upward along arc chute Movement, the safety block is fallen, and the limit angle blocks second lock pin；

When the small lock tongue is turned out using the second rotation hole as axle center, first lock pin is downward along arc chute It moves, is lifted on the safety block.

Further, the limit angle includes the first limiting section and the second limiting section, and the second limiting section is located at the first limit The back lower place in portion is arranged in staged.

Further, it is connected with spring between the safety block and rack side wall, makes safety block that there is the trend fallen.

Further, big lock tongue torsional spring and small lock tongue torsional spring, the big lock tongue are provided on the pin of first rotation hole Torsional spring and small lock tongue torsional spring make big lock tongue and small lock tongue have the trend being turned out respectively.

Further, it is also connected on second rotation hole and the mutually matched upper transmission item of big lock tongue, upper transmission item Limit is equipped with positioned at the side of safety block and releases convex block, is formed on the safety block and is released the third that convex block matches with limit Lock pin；

When the upper transmission item to be pressed downward, the limit releases convex block by driving third lock pin, makes on safety block Lift.

Further, it is formed with limit end on the bottom plate, is formed with and limit end phase on the small lock tongue The small lock tongue convex block of cooperation, the limit end is matched with the second lock pin of the big lock tongue.

Compared with the prior art, the utility model has prominent and beneficial technical effects that:

Technical solution disclosed in the utility model passes through between small lock tongue inside locking bolt, safety block, big lock tongue three Linkage structure realize when prevent fires door closure state when, big lock tongue can not be pushed back inside locking bolt by improper unfolding mode Purpose, to ensure the safety of fire resistant doorsets, when fire resistant doorsets are in close state, small lock tongue is in by the upper end of doorframe and is pressing against State, safety block position can change at this time, so, big to lock so that gear is on the movement routine track of big lock tongue Tongue can not just be pushed back by external force to locking bolt, even if fire resistant doorsets are destroyed by force, can not also be opened.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of fireproof door push lever lock locking bolt.

Fig. 2 is the structural schematic diagram one inside locking bolt.

When Fig. 3 is that small lock tongue is opened, the location diagram between small lock tongue and safety block.

When Fig. 4 is that small lock tongue is closed, the location diagram between small lock tongue and safety block.

Fig. 5 is that safety block is the location diagram between safety block and big lock tongue when falling.

Fig. 6 is the location diagram between safety block and big lock tongue after safety block is fallen.

Fig. 7 is safety block and the structural schematic diagram that spring is connected between bracket.

Fig. 8 is locking bolt schematic diagram of internal structure two.

Fig. 9 is the fiting relation figure between the limit end of bottom plate and the second lock pin of big lock tongue.

Figure 10 is the fiting relation figure between the limit end of bottom plate and the small lock tongue convex block of small lock tongue.

10- bottom plate, 101- limit end, 20- bracket, the first rotation hole of 201-, the first pin of 202-, the rotation of 203- second Hole, the second pin of 204-, 205- spring, the big lock tongue of 30-, the second lock pin of 301-, the small lock tongue of 40-, the first lock pin of 401-, 402- Small lock tongue convex block, 50- safety block, 501- arc chute, 502- limit angle, the first limiting section of 503-, the second limiting section of 504-, 505- third lock pin, the big lock tongue torsional spring of 60-, 70- small lock tongue torsional spring are driven item on 80-, and 801- limit releases convex block.

Specific embodiment

The utility model is further described with specific embodiment with reference to the accompanying drawing,

As shown in figures 1 to 6, which includes bottom plate 10, and the bracket 20 being arranged on bottom plate 10, bracket 20 Side wall offers the first rotation hole 201 and the second rotation hole 203, is connected with greatly in the first rotation hole 201 by the first pin 202 Lock tongue 30 and small lock tongue 40, interior second pin 204 that passes through of the second rotation hole 203 are connected with safety block 50, and safety block 50 is located at greatly Between lock tongue 30 and small lock tongue 40, arc chute 501 is offered on safety block 50, one end side wall in small lock tongue 40 is formed with One lock pin 401, the first lock pin 401 are located in the arc chute 501, small when by small lock tongue 40 towards 20 inner rotation of bracket The first lock pin 401 on lock tongue 40 can be moved along the upper end edge of arc chute 501, while the arc chute of safety block 50 501 lose the restriction of the first lock pin 401, will be toward whereabouts.

The front end of further arc chute 501 has a limit angle 502, and the is formed on one end side wall of big lock tongue 30 Two lock pins 301, when small lock tongue 30 rotates inward, after falling safety block 50, limit angle 502 can be by the on big lock tongue 30 The path of motion profile when two lock pins 301 move inward is blocked, and so can not just be pushed back big lock tongue 30 by external force To bracket 20, fire resistant doorsets cannot so be opened by improper unfolding mode, make the antitheft peace of fire resistant doorsets Full property is protected.

Further, as shown in Figure 5 and Figure 6, limit angle 502 is divided for the first limiting section 503 and the second limiting section 504, and Two limiting sections 504 are located at the back lower place of the first limiting section 503, after safety block 50 is fallen, the first limiting section of limit angle 502 503, which can take the lead in, stops the second lock pin 301 of big lock tongue 30, push back big lock tongue 301 can not to bracket 20.Due to protecting The problems such as machining accuracy of dangerous block 50, will lead to the first limiting section 503 and big 30 second lock pin 301 of lock tongue of partial insurance block 50 Mutual cooperation is without so accurate, therefore the second limiting section 504 has that just can solve above situation brings, After the failure of the first limiting section 503, the second limiting section 504 remains to play the role of stopping the second lock pin 301, makes push-rod lock Safety effect is ensured.

As shown in fig. 7, spring 205 is connected between bracket 20 and safety block 50, when arc chute 501 loses the first lock After the restriction of pin 401, spring 205 can make safety block 50 have the trend fallen, ensure the validity of safety block 50.

As shown in Figure 1, being provided with big lock tongue torsional spring 60 and small lock tongue on the first pin 202 of first rotation hole 201 Torsional spring 70, the big lock tongue torsional spring 60 and small lock tongue torsional spring 70 make big lock tongue 30 and small lock tongue 40 have what is be turned out to become respectively Gesture.So, after each door is opened, big lock tongue 30 and small lock tongue 40 can be resetted, while after door is closed, big to lock Tongue 30 can equally effectively enter inside lock box, complete to cooperate with lock box.

As shown in figure 8, be also connected on second rotation hole 203 with the mutually matched upper transmission item 80 of big lock tongue 30, The side that upper transmission item 80 is located at safety block 50 is equipped with limit and releases convex block 801, is formed on the safety block 50 and solves with limit The third lock pin 505 matched except convex block 801；When the upper transmission item 80 to be pressed downward, the limit releases convex block 801 By driving third lock pin 505, make to lift on safety block 50.Due to the presence of safety block 50, big lock tongue 30 is to inside bracket 20 When rotation, it can be interfered with by safety block 50, therefore, to avoid the work of big lock tongue 30 under normal circumstances, upper transmission item 80 exists While driving big lock tongue 30 to rotate, convex block 801 and 505 phase of third lock pin on safety block 50 can be released by limit thereon Cooperation, carries out upper lift for safety block 50, lock tongue 30 big in this way can smoothly enter inside bracket 20 under normal circumstances, will not It is interfered with by safety block 50.

As shown in Figures 9 and 10, it is equipped with limit end 101 in the front end of bottom plate 10, limit end 101 passes through to big lock tongue 30 On the second lock pin 301 and small lock tongue 40 on small lock tongue convex block 402 be defined, make big lock tongue 30 and small lock tongue 40 outwardly The stroke of rotation is defined within the specified range.

Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model Within the scope of.

Claims (6)

1. a kind of fireproof door push lever lock safety structure, including bottom plate (10), and the bracket (20) being arranged on bottom plate (10), institute It states and offers the first rotation hole (201) and the second rotation hole (203) on the side wall of bracket (20), lead in the first rotation hole (201) It crosses the first pin (202) and is rotatably connected to big lock tongue (30) and small lock tongue (40), pass through the second pin in the second rotation hole (203) (204) safety block (50) are rotatably connected to, which is characterized in that the safety block (50) is located at big lock tongue (30) and small lock tongue (40) Between, the front end of the safety block (50) is formed with arc chute (501), and the front end of the safety block (50) is formed with limit Angle (502) is formed with the first lock pin (401) matched with the arc chute (501) on the side wall of the small lock tongue (40), It is formed on the side wall of the big lock tongue (30) and mutually matched second lock pin (301) of the limit angle (502)；

When the small lock tongue (40) is that axle center rotates inwards with the first rotation hole (201), first lock pin (401) is along arc Shape sliding slot (501) moves upwards, and the safety block (50) falls, and the limit angle (502) blocks second lock pin (301)；

When the small lock tongue (40) is turned out with the second rotation hole (203) for axle center, first lock pin (401) is along arc Shape sliding slot (501) moves downward, and lifts on the safety block (50).

2. fireproof door push lever lock safety structure according to claim 1, which is characterized in that the limit angle (502) includes First limiting section (503) and the second limiting section (504), the second limiting section (504) are located at the back lower place of the first limiting section (503), It is arranged in staged.

3. fireproof door push lever lock safety structure according to claim 1, which is characterized in that the safety block (50) and bracket (20) it is connected with spring (205) between side wall, makes safety block (50) that there is the trend fallen.

4. fireproof door push lever lock safety structure according to claim 1, which is characterized in that first rotation hole (201) The first pin (202) on be provided with big lock tongue torsional spring (60) and small lock tongue torsional spring (70), the big lock tongue torsional spring (60) and small Lock tongue torsional spring (70) makes big lock tongue (30) and small lock tongue (40) have the trend being turned out respectively.

5. fireproof door push lever lock safety structure according to claim 1, which is characterized in that second rotation hole (203) On be also connected with and the mutually matched upper transmission item (80) of big lock tongue (30), upper transmission item (80) is located at the side of safety block (50) Convex block (801) are released equipped with limit, is formed on the safety block (50) and releases the third lock that convex block (801) match with limit It sells (505)；

When the upper transmission item (80) to be pressed downward, the limit releases convex block (801) and passes through drive third lock pin (505), Make to lift on safety block (50).

6. fireproof door push lever lock safety structure according to claim 1, which is characterized in that be formed on the bottom plate (10) It limits end (101), the small lock tongue convex block matched with limit end (101) is formed on the small lock tongue (40) (402), limit end (101) matches with the second lock pin (301) of the big lock tongue (30).