Mechanical key for electric mortise lock

Abstract

The utility model discloses a mechanical key for an electric mortise lock, which belongs to the technical field of electric mortise locks and comprises a key, a main rod and an auxiliary rod, a cavity for placing the auxiliary rod is arranged in the main rod, the auxiliary rod is arranged in the cavity of the auxiliary rod, the key is arranged at the front end of the auxiliary rod, and the main rod is arranged in the cavity of the auxiliary rod. The bottom end of the key is fixedly connected with the front end of the auxiliary rod, a control rod capable of driving the auxiliary rod to extend out of the cavity and retract back into the cavity is arranged in the main rod, threads on the control rod are in threaded fit with a threaded groove in the inner wall of a through hole of the auxiliary rod by rotating the control rod, and under the limiting effect of a sliding groove on a sliding block on the outer wall of the auxiliary rod, the auxiliary rod is driven to rotate. The key is driven to extend out of the cavity of the main rod, so that the using length of the whole mechanical key is increased, the key can be gradually inserted into a key hole of a mechanical lock cylinder along a door frame hole, and the problem that the mechanical key cannot be inserted into the key hole of the mechanical lock cylinder for unlocking due to insufficient length in a power-off state is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric plug locks, in particular to a mechanical key for an electric plug lock. Background Art

[0002] An electric plug lock is an electronic control lock. It drives the protrusion or retraction of a "lock tongue" through the on-off of an electric current to achieve the function of locking or unlocking a door. The realization of the door closing and opening functions requires cooperation with a "magnetic sheet".

[0003] An electric plug lock is generally used for glass doors and needs to be used with installation accessories such as door clips according to whether the glass door has a frame or not. In addition to the lock tongue, the electric plug lock is also equipped with a mechanical lock core that can be unlocked in a power-off state, as well as a matching hand-twisting component and a mechanical key. Taking the use of a framed glass door as an example, the electric plug lock needs to be installed inside the door frame. The matching hand-twisting component of the electric plug lock faces the indoor side, and the keyhole of the mechanical lock core faces the outdoor side, and a hole is made from the outside of the door frame so that the key can extend into the door frame through the hole outside the door and be inserted into the keyhole of the mechanical lock core. In actual application, due to the certain thickness of the wall and the increased thickness of the door frame, the key may not be long enough to be inserted into the keyhole of the mechanical lock core from outside the door frame.

[0004] For example, a multifunctional electric plug lock with the publication number CN205908130U includes a housing, a lock tongue, a circuit board, a solenoid valve body and a connecting rod placed inside the housing. Since there is a certain distance between the installation position of the glass door and the outside of the door frame, especially for some glass door frames with a relatively thick thickness, the distance between the keyhole of the mechanical lock core on the electric plug lock and the outside of the door frame is greater than the length of the mechanical key, which will cause the mechanical key to be unable to be inserted into the keyhole of the mechanical lock core for unlocking in a power-off state. Summary of the Utility Model

[0005] The embodiment of the utility model provides a mechanical key for an electric plug lock to solve the above-mentioned technical problems.

[0006] The embodiment of the utility model adopts the following technical scheme: It includes a key, and also includes a main rod and a sub-rod. A chamber for placing the sub-rod is arranged inside the main rod, and this chamber runs through both ends of the main rod. The sub-rod is arranged inside the chamber of the main rod, and the sub-rod can extend out from the chamber of the main rod to the outside of the front end of the main rod. The key is arranged at the front end part of the sub-rod, and the bottom end of the key is fixedly connected to the front end of the sub-rod. A control rod that can drive the sub-rod to extend out and retract from the chamber is arranged inside the main rod.

[0007] Preferably, a snap ring is fixedly arranged near the end part of the main rod inside the chamber of the main rod. The snap ring is sleeved outside the control rod and is rotatably connected to the outside of the control rod.

[0008] A through hole is provided inside the auxiliary rod, and the through hole extends to the end part of the auxiliary rod. The through hole part of the auxiliary rod is sleeved on the control rod. A thread groove is provided on the inner wall of the through hole of the auxiliary rod, and a thread adapted to the thread groove is provided on the outer wall of the part of the control rod sleeved by the auxiliary rod.

[0009] Preferably, a slider with a cylindrical structure is fixedly provided on the outer wall of the auxiliary rod. A chute is provided on the inner wall of the main rod corresponding to the slider. The chute is arranged in a straight track on the inner wall of the main rod, and the straight track of the chute is the same as the telescopic track of the auxiliary rod in the main rod chamber. The slider is located in the chute and can move along the straight track of the chute.

[0010] Preferably, the length of the main rod is greater than the lengths of the auxiliary rod and the key.

[0011] Preferably, the end part of the control rod extends a certain distance towards the outer area at the end of the main rod. A sleeve is sleeved on the extended part at the end of the control rod, and the sleeve can move on the control rod in two directions, namely towards the front end and the end of the control rod;

[0012] The outer diameter of the sleeve is adapted to the size of the inner wall of the main rod chamber, that is, the sleeve can extend into the main rod chamber;

[0013] A limiting strip with a straight track is fixedly provided on the outer wall at the end of the control rod. The straight track of the limiting strip is the same as the movable direction of the sleeve on the control rod. The sleeve is sleeved on the limiting strip part of the control rod, and a groove adapted to the size of the limiting strip is provided at the contact part where the sleeve is sleeved on the control rod;

[0014] A plurality of insertion strips are fixedly provided around the outer wall at the front end of the sleeve. A slot for inserting the plurality of insertion strips is provided on the inner wall of the chamber at the end of the main rod. Anti-slip lines are provided on the outer wall of the sleeve except at the front end part.

[0015] Preferably, a stop block is fixedly provided on the extended part at the end of the control rod. A spring is sleeved on the control rod. The spring is located between the sleeve and the stop block, and the spring can generate a thrust between the sleeve and the stop block.

[0016] The above at least one technical solution adopted in the embodiment of the present invention can achieve the following beneficial effects:

[0017] First, by rotating the control rod, the threads on the control rod are thread - mated with the thread grooves on the inner wall of the through - hole of the secondary rod. And under the limiting effect of the sliding groove on the slider on the outer wall of the secondary rod, the secondary rod can only extend forward or retract into the cavity of the main rod in the cavity of the main rod. Therefore, when the control rod rotates, the part of the thread groove on the inner wall of the through - hole of the secondary rod will gradually move along the spiral track of the thread on the control rod towards the front - end part of the main rod, thereby driving the key to extend out of the cavity of the main rod, increasing the usable length of the entire mechanical key. At the same time, with the main rod and the secondary rod providing support for the key, the key can be gradually inserted into the keyhole of the mechanical lock core along the door - frame hole, so as to solve the problem that the mechanical key cannot be inserted into the keyhole of the mechanical lock core for unlocking due to insufficient length in the power - off state.

[0018] Second, considering the characteristic that the length of the main rod is greater than that of the secondary rod and the key, the main rod can protect the key retracted into the cavity, preventing the key from being squeezed and worn by external objects. At the same time, when the secondary rod and the key are retracted into the cavity of the main rod, the length of the entire mechanical key is also shortened, thereby reducing the occupied space when the mechanical key is stored.

[0019] Third, the sleeve can limit the rotatable state of the control rod. When multiple inserts on the outer wall of the sleeve are inserted into the slots on the inner wall of the end - cavity of the main rod again, the slots on the inner wall of the end - cavity of the main rod will restrict the multiple inserts on the outer wall of the sleeve, making the sleeve unable to rotate in the cavity of the main rod. In this way, it can prevent the key from generating telescopic displacement of the secondary rod and the key due to the rotation of the control rod during use, and causing the usable length of the entire mechanical key to change. Brief Description of the Drawings

[0020] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 is a schematic three - dimensional structure of the present invention Figure 1 ;

[0022] Figure 2 is a schematic internal structure diagram of the protective tube in the present invention;

[0023] Figure 3 is a schematic internal structure diagram of the secondary rod in the present invention;

[0024] Figure 4 is a schematic diagram of the mechanical key inserted into the door - frame hole and the mechanical lock core;

[0025] Figure 5 is a schematic diagram of the first state of the sleeve in the present invention;

[0026] Figure 6 It is a schematic diagram of the second state of the sleeve in the present utility model;

[0027] Figure 7 It is a schematic diagram of the internal structure of the main rod in the present utility model;

[0028] Figure 8 It is a schematic diagram of the disassembly of the control rod and the sleeve in the present utility model;

[0029] Figure 9 It is a three-dimensional structure schematic of the present utility model Figure 2 .

[0030] Reference numerals

[0031] Key 1, main rod 2, snap ring 21, sliding groove 22, slot 23, sub-rod 3, threaded groove 31, slider 32, control rod 4, thread 41, limiting strip 42, sleeve 5, groove 51, insertion strip 52, stopper 6, spring 7, handle 8. Specific embodiments

[0032] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] The following will, with reference to the drawings, elaborate on the technical solutions provided by each embodiment of the present utility model.

[0034] An embodiment of the present utility model provides a mechanical key for an electric plug lock, which includes a key 1, and also includes a main rod 2 and a sub-rod 3;

[0035] Referring to the attached Figures 1 to 3 As shown, a chamber for placing the sub-rod 3 is provided inside the main rod 2, and this chamber penetrates both ends of the main rod 2. The sub-rod 3 is arranged inside the chamber of the sub-rod 3, and the sub-rod 3 can extend from inside the chamber of the main rod 2 to the outside of the front end of the main rod 2. The key 1 is arranged at the front end part of the sub-rod 3, and the bottom end of the key 1 is fixedly connected to the front end of the sub-rod 3. A control rod 4 capable of driving the sub-rod 3 to extend out of and retract into the chamber is provided inside the main rod 2;

[0036] The main rod 2 can be used for holding and controlling the entire mechanical key. By rotating the control rod 4, the auxiliary rod 3 is driven to extend forward in the chamber of the main rod 2, and the key 1 is driven to extend forward, so as to increase the length of the entire main rod 2, auxiliary rod 3 and the key 1 in the connected state, increasing the controllable length of the key 1. By holding the main rod 2 or the end part, the front end part of the main rod 2, the extended auxiliary rod 3 and the key 1 are extended into the hole outside the door frame. As the main rod 2 and the auxiliary rod 3 are inserted, the key 1 can be inserted into the key hole of the mechanical lock core inside the door frame, so as to realize the unlocking operation of the electric plug lock with the mechanical key in the power-off state.

[0037] Further, as shown in the attached Figures 2 to 6 figure, a snap ring 21 is fixedly arranged near the end part of the main rod 2 in the chamber of the main rod 2. The snap ring 21 is sleeved outside the control rod 4 and is rotatably connected with the outside of the control rod 4;

[0038] A through hole is arranged inside the auxiliary rod 3, and the through hole extends to the end part of the auxiliary rod 3. The through hole part of the auxiliary rod 3 is sleeved on the control rod 4. A thread groove 31 is arranged on the inner wall of the through hole of the auxiliary rod 3, and a thread 41 adapted to the thread groove 31 is arranged on the outer wall of the part of the control rod 4 sleeved by the auxiliary rod 3.

[0039] Further, as shown in the attached Figure 7 figure, a slider 32 with a cylindrical structure is fixedly arranged on the outer wall of the auxiliary rod 3. A chute 22 is arranged on the inner wall of the main rod 2 corresponding to the slider 32. The chute 22 is arranged in a straight track on the inner wall of the main rod 2, and the straight track of the chute 22 is the same as the telescopic track of the auxiliary rod 3 in the chamber of the main rod 2. The slider 32 is located in the chute 22 and can move along the straight track of the chute 22;

[0040] When it is necessary to increase the use length of the entire mechanical key, the control rod 4 can be rotated to make the thread 41 on the control rod 4 cooperate with the thread groove 31 on the inner wall of the through hole of the auxiliary rod 3. Due to the limiting effect of the chute 22 arranged on the inner wall of the main rod 2 on the slider 32 on the outer wall of the auxiliary rod 3, the auxiliary rod 3 can only extend forward or retract into the chamber in the chamber of the main rod 2. Therefore, when the control rod 4 rotates, the part of the thread groove 31 on the inner wall of the through hole of the auxiliary rod 3 will gradually move along the spiral track of the thread 41 on the control rod 4 towards the front end part of the main rod 2, thereby driving the key 1 to extend out of the chamber of the main rod 2, increasing the use length of the entire mechanical key;

[0041] When the front end part of the main rod 2, the auxiliary rod 3 and the key 1 are inserted from the hole outside the door frame, the main rod 2 and the auxiliary rod 3 can provide support for the key 1, so that the key 1 can be gradually inserted into the key hole of the mechanical lock core along the door frame hole.

[0042] Further, as shown in the attachedFigure 9 As shown, the length of the main rod 2 is greater than the lengths of the sub-rod 3 and the key 1; after the mechanical key is used, the control rod 4 can be rotated in the reverse direction to make the thread 41 on the control rod 4 engage with the thread groove 31 in the through-hole of the sub-rod 3 again, so that the thread groove 31 on the inner wall of the through-hole of the sub-rod 3 gradually retracts into the chamber of the main rod 2 along the spiral track of the thread 41 on the control rod 4. Combining the feature that the length of the main rod 2 is greater than the lengths of the sub-rod 3 and the key 1, the sub-rod 3 can retract the key 1 from the outside of the front end of the main rod 2 into the chamber of the main rod 2, and then the main rod 2 can protect the key 1, so that the whole key 1 can be protected from being squeezed and worn by external objects;

[0043] Secondly, when the sub-rod 3 and the key 1 are retracted into the chamber of the main rod 2, the length of the whole mechanical key is also shortened, thereby reducing the occupied space when the mechanical key is stored.

[0044] Further, referring to the attached Figures 5 to 8 As shown, the end part of the control rod 4 extends a distance towards the outer area at the end of the main rod 2. A sleeve 5 is sleeved on the extended part at the end of the control rod 4, and the sleeve 5 can move on the control rod 4 in two directions, namely towards the front end and the end of the control rod 4;

[0045] The outer diameter of the sleeve 5 is adapted to the inner wall size of the chamber of the main rod 2, that is, the sleeve 5 can extend into the chamber of the main rod 2;

[0046] A limiting strip 42 with a linear track is fixedly arranged on the outer wall at the end of the control rod 4. The linear track of the limiting strip 42 is the same as the movable direction of the sleeve 5 on the control rod 4. The sleeve 5 is sleeved on the limiting strip 42 part of the control rod 4, and a groove 51 adapted to the size of the limiting strip 42 is arranged at the contact part where the sleeve 5 is sleeved on the control rod 4;

[0047] A plurality of inserting strips 52 are fixedly arranged around the outer wall at the front end of the sleeve 5. A slot 23 for inserting the plurality of inserting strips 52 is arranged on the inner wall of the chamber at the end of the main rod 2. The outer wall of the sleeve 5 is provided with anti-slip lines except at the front end part;

[0048] The sleeve 5 can limit the rotatable state of the control rod 4. When it is necessary to rotate the control rod 4 to drive the sub-rod 3 and the key 1 to extend out of the chamber of the main rod 2, the sleeve 5 can be pulled towards the end direction of the control rod 4, so that the plurality of inserting strips 52 on the outer wall at the front end of the sleeve 5 are separated from the slot 23 on the inner wall of the chamber at the end of the main rod 2, and the sleeve 5 is not limited by the main rod 2. When the sleeve 5 is pulled, the groove 51 part on the sleeve 5 will be restricted by the limiting strip 42 on the outer wall at the end of the control rod 4, so that the sleeve 5 can only move on the control rod 4 in two directions, namely towards the front end and the end;

[0049] Among them, the sleeve 5 can be used as a holding and controlling component during operation, and the anti-slip patterns provided on the outer wall of the sleeve 5 can increase the friction during holding. When the sleeve 5 is rotated, the groove 51 part on the sleeve 5 will drive the control rod 4 to rotate synchronously due to the limiting effect of the limiting strip 42.

[0050] After the rotation operation of the control rod 4 is completed, the sleeve 5 can be moved and the front end of the sleeve 5 can be inserted into the chamber at the end of the main rod 2, so that the plurality of insertion strips 52 on the outer wall of the sleeve 5 are inserted into the slots 23 on the inner wall of the chamber at the end of the main rod 2 again. At this time, the slots 23 on the inner wall of the chamber at the end of the main rod 2 will restrict the plurality of insertion strips 52 on the outer wall of the sleeve 5, so that the sleeve 5 cannot rotate in the chamber of the main rod 2, and further cause the entire control rod 4 not to rotate, thereby preventing the key 1 from driving the secondary rod 3 and the key 1 to generate telescopic displacement and causing the use length of the entire mechanical key to change during use.

[0051] Furthermore, referring to the attached Figure 5 and 6 As shown, a stop block 6 is fixedly arranged at the extended part of the end of the control rod 4. A spring 7 is sleeved on the control rod 4. The spring 7 is located between the sleeve 5 and the stop block 6, and the spring 7 can generate a thrust between the sleeve 5 and the stop block 6.

[0052] When the front end of the sleeve 5 is inserted into the chamber at the end of the main rod 2, the spring 7 can exert a thrust between the stop block 6 and the sleeve 5, so that during the use of the mechanical key, the sleeve 5 will not come out of the chamber at the end of the main rod 2 in the natural state, thereby preventing the sleeve 5 from coming out of the chamber at the end of the main rod 2 and causing the control rod 4 to rotate and drive the secondary rod 3 and the key 1 to move.

[0053] Furthermore, for the convenience of rotating the main rod 2, holding handles 8 are fixedly arranged on both outer sides of the end of the main rod 2. During operation, the holding handles 8 can be held by the operator's hand, so as to better control when rotating the main rod 2.

[0054] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A mechanical key for an electric plug lock, comprising a key (1), characterized in that, Further comprising: A main rod (2), inside which there is a chamber for placing a sub-rod (3), and this chamber runs through both ends of the main rod (2); A sub-rod (3), which is arranged inside the chamber of the main rod (2), and the sub-rod (3) can extend out from the chamber of the main rod (2) to the outside of the front end of the main rod (2); The key (1) is arranged at the front end part of the sub-rod (3), and the bottom end of the key (1) is fixedly connected to the front end of the sub-rod (3); Inside the main rod (2), there is a control rod (4) that can drive the sub-rod (3) to extend out of and retract into the chamber; 2. The mechanical key for an electric plug lock according to claim 1, wherein, Near the end part of the main rod (2) inside the chamber of the main rod (2), a snap ring (21) is fixedly arranged, and the snap ring (21) is sleeved outside the control rod (4) and is rotatably connected to the outside of the control rod (4); Inside the sub-rod (3), there is a through hole that extends to the end part of the sub-rod (3). The through hole part of the sub-rod (3) is sleeved on the control rod (4). Inside the inner wall of the through hole of the sub-rod (3), there is a thread groove (31), and on the outer wall of the part of the control rod (4) sleeved by the sub-rod (3), there is a thread (41) adapted to the thread groove (31); 3. A mechanical key for an electric plug lock according to claim 1, characterized in that, On the outer wall of the sub-rod (3), a slider (32) with a cylindrical structure is fixedly arranged. At the part of the inner wall of the main rod (2) corresponding to the slider (32), there is a chute (22), and this chute (22) is arranged in a straight track on the inner wall of the main rod (2). The slider (32) is located inside the chute (22) and can move along the straight track of the chute (22); 4. A mechanical key for an electric plug lock according to claim 1, characterized in that, The length of the main rod (2) is greater than the lengths of the sub-rod (3) and the key (1); 5. A mechanical key for an electric plug lock according to claim 1, characterized in that, The end part of the control rod (4) extends a certain distance to the outside area of the end of the main rod (2). A sleeve (5) is sleeved on the extended part at the end of the control rod (4), and the sleeve (5) can move on the control rod (4) in two directions, namely, towards the front end and the end of the control rod (4); The outer diameter of the sleeve (5) is adapted to the size of the inner wall of the chamber of the main rod (2), that is, the sleeve (5) can extend into the chamber of the main rod (2); On the outer wall of the end of the control rod (4), a limiting strip (42) with a straight track is fixedly arranged. The straight track of the limiting strip (42) is in the same moving direction as the sleeve (5) on the control rod (4). The sleeve (5) is sleeved on the part of the limiting strip (42) of the control rod (4), and at the contact part where the sleeve (5) is sleeved on the control rod (4), there is a groove (51) adapted to the size of the limiting strip (42); Around the front outer wall of the sleeve (5), a plurality of insertion strips (52) are fixedly arranged. Inside the inner wall of the chamber at the end of the main rod (2), there are slots (23) for the plurality of insertion strips (52) to be inserted into. The outer wall of the sleeve (5) except for the front end part is provided with anti-slip lines; 6. A mechanical key for an electric plug lock according to claim 5, characterized in that, At the extended part at the end of the control rod (4), a stop block (6) is fixedly arranged. A spring (7) is sleeved on the control rod (4), and the spring (7) is located between the sleeve (5) and the stop block (6), and the spring (7) can generate a thrust between the sleeve (5) and the stop block (6).

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