An escape door lock

Abstract

The utility model discloses an escape door lock, comprising a main lock body, a rotating member, a lock tongue, a safety assembly and an unlocking mechanism, wherein the main lock body is provided with an inner cavity; the rotating member can rotate around a vertical axis, and the rotating member is provided with a rotating part; the lock tongue is provided with a driven part, and when the rotating member rotates, the rotating part can push the driven part to retract the lock tongue; the safety assembly comprises a blocking member and a lever, the blocking member is provided in the lock tongue and can move up and down, the blocking member is provided with a first slide groove, the lower part of the blocking member is provided with a blocking rod extending downward, the lower part of the lock tongue is provided with a first through hole, the blocking rod passes through the first through hole, and the blocking rod abuts against a side of the rotating part close to the lock tongue, and when the lock tongue retracts, the lever can move along the first slide groove into the lock tongue and push the blocking member to move upward. The escape door lock provided by the utility model embodiment can achieve a reliable safety function through a simple structural principle, simplify the process, and reduce the manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of escape door locks, in particular to an escape door lock. Background Art

[0002] Escape door locks, also known as fire escape door locks, are mainly used on the doors of emergency exits in public places with large traffic such as large supermarkets, shopping malls, office buildings, hospitals, schools, factory buildings, etc. It prevents outsiders from entering without permission and can also ensure the safe escape of internal personnel in emergency situations such as fire.

[0003] Existing escape door locks are generally composed of a main lock body, a top and bottom lock, and an unlocking device. The unlocking device is connected to the main lock body. The main lock body is provided with a lock tongue and a lock core component. The lock core component is connected to the upper and lower top and bottom locks through a pull rod. When a person triggers the unlocking device, the lock core component of the main lock body drives the lock tongue to retract to unlock, and at the same time drives the upper and lower top and bottom locks to move through the pull rod to achieve synchronous unlocking. In the prior art, escape door locks are usually provided with a safety mechanism to prevent the lock tongue from retracting without triggering the unlocking device, but the principle and structure are complicated and the manufacturing cost is high. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an escape door lock, which can achieve a reliable insurance function through a simple structural principle, simplify the process, and reduce the manufacturing cost.

[0005] According to the utility model, an escape door lock is provided, which includes a main lock body, a rotating member, a lock tongue, a safety assembly and an unlocking mechanism, wherein the main lock body is provided with an inner cavity; the rotating member can be rotatably arranged in the inner cavity, the rotating member can rotate around a vertical axis, and the rotating member is provided with a rotating part; one end of the lock tongue can be rotatably arranged in the inner cavity, and the lock tongue is provided with a driven part, and when the rotating member rotates, the rotating part can push the driven part to retract the lock tongue; the safety assembly includes a blocking member and a lever, and the blocking member is arranged in the lock tongue and can move up and down. The locking mechanism is configured to move the locking member to a position which is adjacent to the locking member, the locking member being configured to move relative to the locking member when the locking member is unlocked and the locking member being unlocked.

[0006] The escape door lock according to the above embodiment of the utility model has at least the following beneficial effects:

[0007] The escape door lock provided by the embodiment of the utility model can be provided with a blocking member that can move up and down in the lock tongue. When the unlocking mechanism is not triggered, the blocking member can be placed on the lever under its own gravity, so that the blocking rod provided at the lower part of the blocking member can extend out of the first through hole, and the extended blocking rod abuts against the side of the rotating part close to the lock tongue. As long as the rotating part remains stationary, the lock tongue cannot be retracted. When the unlocking mechanism is triggered, the unlocking mechanism drives the rotating member to rotate to drive the rotating part to rotate, and the rotating part can push the driven part to drive the lock tongue to retract. During the process of retracting the lock tongue, since the lever remains stationary, the lever moves along the first slide groove into the lock tongue relative to the lock tongue, and can push the blocking member to move upward, so that the blocking rod retracts the first through hole, and then the lock tongue is no longer blocked and can be fully retracted. The escape door lock provided by the embodiment of the utility model can achieve a reliable insurance function through a simple structural principle, simplify the process, and reduce the manufacturing cost.

[0008] According to some embodiments of the utility model, the lever extends in a horizontal direction, the width of the first slide groove in the up-down direction gradually increases in a direction approaching the rotating member, and the width of one end of the first slide groove in the up-down direction close to the rotating member is greater than the width of the lever in the up-down direction.

[0009] According to some embodiments of the utility model, the blocking member includes a first extension section, a second extension section and a connecting portion, the first extension section and the second extension section both extend in a direction close to the rotating member, the first extension section and the second extension section are connected at one end away from the rotating member through the connecting portion, the first extension section is located above the second extension section, the first slide groove is arranged between the first extension section and the second extension section, and the blocking rod is arranged at the end of the second extension section.

[0010] According to some embodiments of the utility model, a guide rod extending upward is provided at the end of the first extension section, a corresponding second through hole is provided at the upper portion of the locking tongue, and the guide rod is slidably disposed in the second through hole.

[0011] According to some embodiments of the utility model, the blocking member also includes a first straight section and a second straight section, two ends of the first straight section are respectively connected to the first extension section and the guide rod, two ends of the second straight section are respectively connected to the second extension section and the blocking rod, a second slide groove is arranged between the first straight section and the second straight section, the shift rod is inserted into the second slide groove, and the width of the second slide groove along the up and down direction is greater than the width of the shift rod along the up and down direction.

[0012] According to some embodiments of the utility model, a guide groove is provided at one end of the lock tongue away from the inner cavity, the guide groove extends in a horizontal direction, the guide groove corresponds to the positions of the first slide groove and the second slide groove, the end of the lever is sequentially passed through the second slide groove and the guide groove, and the width of the guide groove along the up and down direction is equal to the width of the lever along the up and down direction.

[0013] According to some embodiments of the utility model, a limiting portion is provided on the inner wall of the locking tongue away from the rotating member, and the limiting portion is provided adjacent to the guide groove. One side of the connecting portion abuts against the inner wall of the guide groove where the locking tongue is provided, and the other side of the connecting portion abuts against the limiting portion.

[0014] According to some embodiments of the utility model, the escape door lock also includes an inner bracket, which is arranged in the inner cavity, the rotating member can be rotatably connected to one side of the inner bracket, and a first rotating shaft extending vertically is provided on the other side of the inner bracket, the lock tongue is located on a side of the inner bracket adjacent to the rotating member, one end of the lock tongue can be rotatably connected to the first rotating shaft, the lock tongue is provided with a first elastic member for resetting, and the rotating member is provided with a second elastic member for resetting.

[0015] According to some embodiments of the utility model, the first elastic member includes a first torsion spring, which is sleeved on the first rotating shaft, one end of the first torsion spring is fixedly connected to the inner bracket, and the other end of the first torsion spring is fixedly connected to the locking tongue; the second elastic member includes a second torsion spring, one end of the second torsion spring is fixedly connected to the inner bracket, and the other end of the second torsion spring is fixedly connected to the rotating part.

[0016] According to some embodiments of the utility model, the unlocking mechanism includes a toggle member, a handle and a pressure rod, the toggle member is arranged on a side of the inner bracket relative to the lock tongue, a second rotating shaft perpendicular to the first rotating shaft is arranged at an end of the toggle member away from the lock tongue, the second rotating shaft can be rotatably connected to the inner bracket and extend out of the inner cavity, one end of the handle is connected to the end of the rotating shaft, and the other end of the handle is connected to the pressure rod, the toggle member is provided with a toggle part, the rotating part is arranged on a side of the rotating member close to the lock tongue, and an abutting part is arranged on a side of the rotating member close to the toggle member, and when the toggle member rotates, the toggle part can push the abutting part to cause the rotating part to rotate in a direction away from the lock tongue.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 It is a schematic diagram of the structure of the escape door lock of some embodiments of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the main lock body of some embodiments of the utility model;

[0021] Figure 3 It is a partial structural schematic diagram of an escape door lock of some embodiments of the utility model;

[0022] Figure 4 It is a schematic diagram of the partial structure of some embodiments of the utility model when the lock tongue is extended;

[0023] Figure 5 It is a schematic diagram of the partial structure of some embodiments of the utility model when the lock tongue is retracted;

[0024] Figure 6 for Figure 5 The structural decomposition diagram in ;

[0025] Figure 7 The schematic diagram of the structure of the lock tongue of some embodiments of the utility model is

[0026] Figure 8 It is a schematic diagram of the structure of the lever of some embodiments of the utility model.

[0027] Wherein, the reference numerals are:

[0028] Main lock body 100;

[0029] Rotating member 110; rotating portion 111; second torsion spring 112; abutting portion 113;

[0030] Lock tongue 120; driven part 121; first through hole 122; second through hole 123; guide groove 124; first torsion spring 125; limiting part 126;

[0031] Blocking member 130; first extension section 131; first straight section 132; guide rod 133; second extension section 134; second straight section 135; blocking rod 136; connecting portion 137; first slide groove 138; second slide groove 139;

[0032] A lever 140; a third torsion spring 141;

[0033] Inner bracket 150; first rotating shaft 151;

[0034] The toggle member 160; the second rotating shaft 161; the toggle portion 162; the fourth torsion spring 163;

[0035] Handle 170;

[0036] Pressure rod 180;

[0037] Square rod seat 190; driving part 191;

[0038] Heaven and Earth Lock 200;

[0039] Linkage rod 300. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the utility model, unless otherwise clearly defined, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the technical personnel in the relevant technical field can reasonably determine the specific meaning of the above words in the utility model in combination with the specific content of the technical solution. In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0044] Reference Figures 1 to 6 According to the utility model, an escape door lock includes a main lock body 100, a rotating member 110, a lock tongue 120, a safety assembly and an unlocking mechanism. The main lock body 100 is provided with an inner cavity; the rotating member 110 can be rotatably arranged in the inner cavity, the rotating member 110 can rotate around a vertical axis, and the rotating member 110 is provided with a rotating part 111; one end of the lock tongue 120 can be rotatably arranged in the inner cavity, and the lock tongue 120 is provided with a driven part 121. When the rotating member 110 rotates, the rotating part 111 can push the driven part 121 to retract the lock tongue 120; the safety assembly includes a blocking member 130 and a lever 140. The blocking member 130 is arranged in the lock tongue 120 and can move up and down. The blocking member 130 is provided with a first slide groove 138, and a blocking rod 136 extending downward is provided at the lower part of the blocking member 130. The lower part of the lock tongue 120 is provided with a first through hole 122. The blocking rod 136 passes through the first through hole 122, and the blocking rod 136 abuts against the side of the rotating part 111 close to the lock tongue 120. One end of the lever 140 is connected to the main lock body 100, and the other end of the lever 140 is passed through the first slide groove 138. When the lock tongue 120 is retracted, the lever 140 can move along the first slide groove 138 into the lock tongue 120 and push the blocking member 130 to move upward; the unlocking mechanism is connected to the rotating member 110 and can drive the rotating member 110 to rotate.

[0045] Specifically, the escape door lock provided by the embodiment of the utility model can be provided with a blocking member 130 that can move up and down in the lock tongue 120. When the unlocking mechanism is not triggered, the blocking member 130 can be placed on the lever 140 under the action of its own gravity, so that the blocking rod 136 arranged at the lower part of the blocking member 130 can extend out of the first through hole 122, and the extended blocking rod 136 abuts against the side of the rotating part 111 close to the lock tongue 120. As long as the rotating part 111 remains stationary, the lock tongue 120 cannot be retracted. When the unlocking mechanism is triggered, the unlocking mechanism drives the rotating member 110 to rotate to drive the rotating part 111 to rotate, and the rotating part 111 can push the driven part 121 to drive the lock tongue 120 to retract. During the retraction of the lock tongue 120, since the lever 140 remains stationary, the lever 140 moves along the first slide groove 138 into the lock tongue 120 relative to the lock tongue 120, and can push the blocking member 130 to move upward, so that the blocking rod 136 retracts into the first through hole 122, and then the lock tongue 120 is no longer blocked and can be fully retracted. The escape door lock provided by the embodiment of the utility model can achieve a reliable insurance function through a simple structural principle, simplify the process, and reduce the manufacturing cost.

[0046] Preferably, refer to Figures 6 to 8 According to some embodiments of the present invention, the lever 140 extends in the horizontal direction, the width of the first slide groove 138 in the up-down direction gradually increases in the direction close to the rotating member 110, and the width of one end of the first slide groove 138 close to the rotating member 110 in the up-down direction is greater than the width of the lever 140 in the up-down direction.

[0047] It can be understood that in the embodiment of the present invention, one end of the lever 140 can be set at the end of the first slide groove 138 close to the rotating member 110. Then, when the lock tongue 120 is in the extended state, since the width of the end of the first slide groove 138 close to the rotating member 110 in the up-down direction is greater than the width of the lever 140 in the up-down direction, the blocking member 130 is placed on the lever 140 under the action of its own gravity, that is, the lever 140 contacts the upper inner wall of the first slide groove 138 but does not contact the lower inner wall of the first slide groove 138. At the same time, the blocking member 130 drives the blocking rod 136 to fall, so that the blocking rod 136 can extend out of the first through hole 122 and abut against the side of the rotating part 111 close to the lock tongue 120, thereby preventing the lock tongue 120 from retracting when the rotating member 110 remains stationary. When the unlocking mechanism is triggered, the unlocking mechanism drives the rotating member 110 to rotate to drive the rotating part 111 to rotate, and the rotating part 111 can push the driven part 121 to drive the lock tongue 120 to retract. During the retraction of the lock tongue 120, since the lever 140 remains stationary, the lever 140 moves relative to the lock tongue 120 along the first slide groove 138 into the lock tongue 120. As the lever 140 gradually moves inward, the width of the first slide groove 138 along the up-down direction gradually decreases, so that the lever 140 can gradually push the blocking member 130 to move upward, thereby driving the blocking rod 136 to move upward to retract the first through hole 122, and then the lock tongue 120 is no longer blocked and can be fully retracted, thereby achieving unlocking. The escape door lock provided by the embodiment of the utility model realizes a reliable safety mechanism, simplifies the process, and reduces the manufacturing cost by utilizing the gravity of the blocking member 130 itself and the simple structural principle.

[0048] Furthermore, according to some embodiments of the present invention, in addition to the above-mentioned structure, the first slide groove 138 can be set as a straight groove, and an inclined surface can be provided on the lever 140. Then, when the lever 140 moves along the first slide groove 138 into the lock tongue 120, the blocking member 130 can be gradually lifted along the inclined surface on the lever 140 through the first slide groove 138, thereby driving the blocking rod 136 to move upward to retract the first through hole 122. Other structures that can achieve the same function can also be used, which will not be described in detail here.

[0049] Further, see Figures 6 to 8 According to some embodiments of the present invention, the blocking member 130 includes a first extension section 131, a second extension section 134 and a connecting portion 137. The first extension section 131 and the second extension section 134 both extend in a direction close to the rotating member 110. The first extension section 131 and the second extension section 134 are connected at one end away from the rotating member 110 by the connecting portion 137. The first extension section 131 is located above the second extension section 134. A first sliding groove 138 is arranged between the first extension section 131 and the second extension section 134. A blocking rod 136 is arranged at the end of the second extension section 134.

[0050] It is understandable that in actual production, the blocking member 130 can be obtained by bending the tube rod, which has a simple structure, simplifies the process, reduces the manufacturing cost, and facilitates subsequent processing.

[0051] Further, see Figures 6 to 8 According to some embodiments of the present invention, a guide rod 133 extending upward is provided at the end of the first extension section 131 , a corresponding second through hole 123 is provided at the upper portion of the locking tongue 120 , and the guide rod 133 is slidably disposed in the second through hole 123 .

[0052] It is understandable that the guide rod 133 can limit and guide the blocking member 130, thereby preventing the blocking member 130 from shaking left and right, and can make the up and down movement of the blocking member 130 more stable and smooth.

[0053] Further, see Figures 6 to 8 According to some embodiments of the utility model, the blocking member 130 also includes a first straight section 132 and a second straight section 135, the two ends of the first straight section 132 are respectively connected to the first extension section 131 and the guide rod 133, the two ends of the second straight section 135 are respectively connected to the second extension section 134 and the blocking rod 136, a second slide groove 139 is arranged between the first straight section 132 and the second straight section 135, the lever 140 is inserted into the second slide groove 139, and the width of the second slide groove 139 along the up and down direction is greater than the width of the lever 140 along the up and down direction.

[0054] It is understandable that when the rotating part 111 pushes the driven part 121 to drive the lock tongue 120 to retract, the blocking rod 136 will move with the rotating part 111, and while moving, it will retract into the first through hole 122 under the drive of the lever 140 until it is completely retracted into the first through hole 122, so that the lock tongue 120 can be completely retracted. Then, by providing a straight second slide groove 139, when the lever 140 moves inwardly along the second slide groove 139 relative to the lock tongue 120, the lever 140 will not push the blocking member 130 to move upward, and the blocking rod 136 will not gradually retract into the first through hole 122, but will move a certain distance with the rotating part 111 until the lever 140 starts to move along the first slide groove 138, and then the blocking rod 136 will begin to gradually retract into the first through hole 122, and finally completely leave the rotating part 111, so that the lock tongue 120 can be completely retracted. The above-mentioned structural manner can provide a buffer time for the lock tongue 120, and the lock tongue 120 will not feel loose when unlocking due to the rapid retraction of the blocking rod 136, thereby improving reliability. On the other hand, by providing a buffer time, if the unlocking mechanism is interrupted during the buffer time, the lock tongue 120 can be quickly reset, reducing the movement of components, thereby reducing friction between components, and increasing service life by reducing loss.

[0055] Further, see Figures 5 to 8 According to some embodiments of the present invention, a guide groove 124 is provided at one end of the lock tongue 120 away from the inner cavity, and the guide groove 124 extends in the horizontal direction. The guide groove 124 corresponds to the positions of the first slide groove 138 and the second slide groove 139. The end of the lever 140 is sequentially inserted into the second slide groove 139 and the guide groove 124. The width of the guide groove 124 along the up-down direction is equal to the width of the lever 140 along the up-down direction.

[0056] It can be understood that the guide groove 124 can guide and limit the lever 140, thereby preventing the lever 140 from shaking or deflecting during use, thereby improving the reliability of the structure and ensuring the performance of the escape door lock.

[0057] Further, see Figure 7 According to some embodiments of the present invention, a limiting portion 126 is provided on the inner wall of the lock tongue 120 away from the rotating member 110, and the limiting portion 126 is provided near the guide groove 124. One side of the connecting portion 137 abuts against the inner wall of the guide groove 124 provided on the lock tongue 120, and the other side of the connecting portion 137 abuts against the limiting portion 126.

[0058] It can be understood that the limiting portion 126 can limit and fix the connecting portion 137. The blocking member 130 is provided with a blocking rod 136 and one end of the guide rod 133 is limited by the first through hole 122 and the second through hole 123, and the blocking member 130 is provided with one end of the connecting portion 137 is limited by the limiting portion 126, thereby preventing the blocking member 130 from shaking or deflecting during use, improving the reliability of the structure, and ensuring the performance of the escape door lock.

[0059] Specifically, refer to Figures 4 to 6 According to some embodiments of the utility model, the escape door lock also includes an inner bracket 150, which is arranged in the inner cavity, the rotating member 110 is rotatably connected to one side of the inner bracket 150, and a first rotating shaft 151 extending vertically is provided on the other side of the inner bracket 150. The lock tongue 120 is located on a side of the inner bracket 150 adjacent to the rotating member 110, and one end of the lock tongue 120 is rotatably connected to the first rotating shaft 151. The lock tongue 120 is provided with a first elastic member for resetting, and the rotating member 110 is provided with a second elastic member for resetting.

[0060] It can be understood that the rotating part 111 pushes the driven part 121 to drive the lock tongue 120 to rotate around the first rotating shaft 151, thereby retracting the inner bracket 150. After the unlocking mechanism stops being triggered, the lock tongue 120 is reset by the first elastic member, and the rotating member 110 is reset by the second elastic member.

[0061] Preferably, refer to Figures 4 to 6 According to some embodiments of the utility model, the first elastic member includes a first torsion spring 125, the first torsion spring 125 is sleeved on the first rotating shaft 151, one end of the first torsion spring 125 is fixedly connected to the inner bracket 150, and the other end of the first torsion spring 125 is fixedly connected to the lock tongue 120, so that the lock tongue 120 is reset by utilizing the elastic force of the first torsion spring 125. The second elastic member includes a second torsion spring 112, one end of the second torsion spring 112 is fixedly connected to the inner bracket 150, and the other end of the second torsion spring 112 is fixedly connected to the rotating part 111, so that the rotating member 110 is reset by utilizing the elastic force of the second torsion spring 112.

[0062] Furthermore, in the embodiment of the present utility model, the first elastic member and the second elastic member may also be other parts or structures as long as they can achieve the reset effect, which will not be elaborated here.

[0063] Preferably, refer to Figures 4 to 6According to some embodiments of the utility model, the lock tongue 120 is provided with two driven parts 121, and the two driven parts 121 are relatively arranged on the upper and lower sides of the lock tongue 120, and the first torsion spring 125 is arranged between the two driven parts 121. The rotating member 110 is provided with two rotating parts 111, and the rotating parts 111 correspond to the driven parts 121 one by one. The two rotating parts 111 are respectively connected to a second torsion spring 112.

[0064] It can be understood that the above structure can make the movement of the lock tongue 120 and the rotating member 110 smoother and more evenly stressed, thereby enhancing the structural stability and improving the performance of the escape door lock.

[0065] Further, see Figures 4 to 6 According to some embodiments of the present invention, one end of the lever 140 is rotatably connected to the first rotating shaft 151, and the lever 140 is provided with a third elastic member for resetting.

[0066] It is understandable that in order to adapt to different usage conditions, the lever 140 can be adjusted in position by rotating around the first rotating shaft 151, and the position of the lever 140 can be fixed by adjusting the tension of the first elastic member. On the other hand, when the lever 140 is offset due to contact with components during use, it can be reset by the first elastic member.

[0067] Preferably, refer to Figures 4 to 6 According to some embodiments of the utility model, the third elastic member includes a third torsion spring 141, the third torsion spring 141 is sleeved on the first rotating shaft 151, one end of the third torsion spring 141 is fixedly connected to the inner bracket 150, and the other end of the third torsion spring 141 is fixedly connected to the lever 140, so that the position of the lever 140 is fixed and restored after displacement by utilizing the elastic force of the third torsion spring 141.

[0068] Furthermore, in the embodiment of the present utility model, the third elastic member may also be other parts or structures, as long as they can achieve the same effect, which will not be elaborated here.

[0069] Specifically, refer to Figures 1 to 4According to some embodiments of the utility model, the unlocking mechanism includes a toggle member 160, a handle 170 and a pressure rod 180. The toggle member 160 is arranged on a side of the inner bracket 150 relative to the lock tongue 120. The end of the toggle member 160 away from the lock tongue 120 is provided with a second rotating shaft 161 perpendicular to the first rotating shaft 151. The second rotating shaft 161 can be rotatably connected to the inner bracket 150 and extend out of the inner cavity. One end of the handle 170 is connected to the end of the rotating shaft, and the other end of the handle 170 is connected to the pressure rod 180. The toggle member 160 is provided with a toggle portion 162. A rotating portion 111 is provided on a side of the rotating member 110 close to the lock tongue 120. A contact portion 113 is provided on a side of the rotating member 110 close to the toggle member 160. When the toggle member 160 rotates, the toggle portion 162 can push the contact portion 113 to cause the rotating portion 111 to rotate in a direction away from the lock tongue 120.

[0070] It is understandable that when unlocking is required, the pressure rod 180 is pressed down to drive the handle 170 to rotate, thereby driving the toggle member 160 to rotate, driving the toggle portion 162 to push the abutment portion 113, thereby driving the rotating member 110 to rotate, and then driving the lock tongue 120 to retract, thereby achieving unlocking.

[0071] Specifically, refer to Figure 2 and Figure 3 According to some embodiments of the utility model, a square rod seat 190 is rotatably provided on the main lock body 100, and the square rod seat 190 is used to connect to the mechanical door lock. When the mechanical door lock is unlocked by a key, the mechanical door lock can drive the square rod seat 190 to rotate. The square rod seat 190 is provided with a driving part 191, and the driving part 191 can push the rotating member 110 to rotate, thereby driving the lock tongue 120 to retract.

[0072] It is understandable that in addition to unlocking by triggering the unlocking mechanism, the escape door lock can also be unlocked by using a key to unlock the mechanical door lock.

[0073] Specifically, refer to Figure 1 According to some embodiments of the utility model, the escape door lock also includes a sky lock 200 and a linkage rod 300. The rotating member 110 is connected to the sky lock 200 through the linkage rod 300. When the rotating member 110 rotates, the sky lock 200 can be driven by the linkage rod 300 to achieve synchronous unlocking. The specific structure of the sky lock 200 can be a common structure in the prior art and will not be described in detail here.

[0074] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An escape door lock, characterized in that: include: A main lock body is provided with an inner cavity; A rotating member, the rotating member is rotatably disposed in the inner cavity, the rotating member can rotate around a vertical axis, and the rotating member is provided with a rotating portion; A lock tongue, one end of which is rotatably disposed in the inner cavity, and the lock tongue is provided with a driven part, and when the rotating member rotates, the rotating part can push the driven part to retract the lock tongue; The safety assembly comprises a blocking member and a lever, wherein the blocking member is arranged in the lock tongue and can move up and down, the blocking member is provided with a first sliding groove, the lower part of the blocking member is provided with a blocking rod extending downward, the lower part of the lock tongue is provided with a first through hole, the blocking rod passes through the first through hole, and the blocking rod abuts against a side of the rotating part close to the lock tongue, one end of the lever is connected to the main lock body, and the other end of the lever is passed through the first sliding groove, and when the lock tongue is retracted, the lever can move along the first sliding groove into the lock tongue and push the blocking member to move upward; The unlocking mechanism is connected to the rotating member and can drive the rotating member to rotate.

2. The escape door lock according to claim 1, characterized in that: The lever extends in the horizontal direction, the width of the first slide groove in the vertical direction gradually increases in the direction close to the rotating member, and the width of one end of the first slide groove close to the rotating member in the vertical direction is greater than the width of the lever in the vertical direction.

3. The escape door lock according to claim 2, characterized in that: The blocking member includes a first extension section, a second extension section and a connecting portion, the first extension section and the second extension section both extend in a direction close to the rotating member, the first extension section and the second extension section are connected at one end away from the rotating member through the connecting portion, the first extension section is located above the second extension section, the first slide groove is arranged between the first extension section and the second extension section, and the blocking rod is arranged at the end of the second extension section.

4. The escape door lock according to claim 3, characterized in that: The end of the first extension section is provided with a guide rod extending upward, the upper part of the locking tongue is provided with a corresponding second through hole, and the guide rod is slidably arranged in the second through hole.

5. The escape door lock according to claim 4, characterized in that: The blocking member also includes a first straight section and a second straight section, two ends of the first straight section are respectively connected to the first extension section and the guide rod, two ends of the second straight section are respectively connected to the second extension section and the blocking rod, a second slide groove is arranged between the first straight section and the second straight section, the shift rod is inserted into the second slide groove, and the width of the second slide groove along the up and down direction is greater than the width of the shift rod along the up and down direction.

6. The escape door lock according to claim 5, characterized in that: A guide groove is provided at one end of the locking tongue away from the inner cavity, and the guide groove extends in a horizontal direction. The guide groove corresponds to the positions of the first slide groove and the second slide groove, and the end of the lever is sequentially inserted into the second slide groove and the guide groove, and the width of the guide groove in the up-down direction is equal to the width of the lever in the up-down direction.

7. The escape door lock according to claim 6, characterized in that: The locking tongue is provided with a limiting portion on the inner wall away from the rotating member, and the limiting portion is provided adjacent to the guide groove. One side of the connecting portion abuts against the inner wall of the guide groove where the locking tongue is provided, and the other side of the connecting portion abuts against the limiting portion.

8. The escape door lock according to claim 1, characterized in that: The escape door lock also includes an inner bracket, which is arranged in the inner cavity. The rotating member is rotatably connected to one side of the inner bracket, and a first rotating shaft extending vertically is arranged on the other side of the inner bracket. The lock tongue is located on a side of the inner bracket adjacent to the rotating member, and one end of the lock tongue is rotatably connected to the first rotating shaft. The lock tongue is provided with a first elastic member for resetting, and the rotating member is provided with a second elastic member for resetting.

9. The escape door lock according to claim 8, characterized in that: The first elastic member includes a first torsion spring, which is sleeved on the first rotating shaft, one end of the first torsion spring is fixedly connected to the inner bracket, and the other end of the first torsion spring is fixedly connected to the locking tongue; the second elastic member includes a second torsion spring, one end of the second torsion spring is fixedly connected to the inner bracket, and the other end of the second torsion spring is fixedly connected to the rotating part.

10. The escape door lock according to claim 8, characterized in that: The unlocking mechanism includes a toggle member, a handle and a pressure rod, the toggle member is arranged on a side of the inner bracket relative to the lock tongue, the toggle member is provided with a second rotating shaft perpendicular to the first rotating shaft at one end away from the lock tongue, the second rotating shaft can be rotatably connected to the inner bracket and extend out of the inner cavity, one end of the handle is connected to the end of the rotating shaft, and the other end of the handle is connected to the pressure rod, the toggle member is provided with a toggle part, the rotating part is provided on a side of the rotating member close to the lock tongue, and an abutting part is provided on a side of the rotating member close to the toggle member, and when the toggle member rotates, the toggle part can push the abutting part to make the rotating part rotate in a direction away from the lock tongue.

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