A lock head structure for an electric mortise lock and an electric mortise lock

Abstract

The utility model belongs to the field of electric lock, disclose a lock head structure and electric plug lock for electric plug lock, including the lock head, the lock head has axial direction, this lock head extends along its axial direction and has the taper structure in its bottom, this taper structure is compatible with the lock hole on the lock catch board on the lock head structure.

Description

Technical Field

[0001] This utility model belongs to the field of electric locks, specifically relating to a lock head structure for an electric bolt lock and an electric bolt lock. Background Technology

[0002] Electric bolt locks are widely used in access control systems for two-way doors such as glass doors and wooden doors that require automatic control. They mainly use power on and off to control the extension and retraction of the lock head to achieve the functions of opening and locking the door.

[0003] Currently, common electric bolt locks such as Figure 1-2 As shown, it comprises two parts: a lock body 1 and a strike plate 2. The lock body 1 mainly consists of a housing 11, a lock cover 12, a cylindrical lock head 13, an electromagnetic coil 14, an L-shaped push lever 15, and a return spring 16. The housing 11 is typically made of sturdy metal and has multiple threaded holes 111 that connect to the lock cover 12 via screws, protecting the internal parts from damage. The lock cover 12 typically has multiple mounting holes 121 for connecting the lock cover 12 to the lock body 1, and two first mounting holes at both ends of the lock cover 12 for fixing the lock body 1 to the door frame. The cylindrical lock head 13 is made of metal; when it extends and inserts into the lock hole on the strike plate 2, it locks the door; when it retracts, it unlocks the door. The electromagnetic coil 14 is an electric bolt lock. The core component consists of enameled wire wound around an iron core. When energized, it generates an electromagnetic field, pushing the L-shaped push lever 15, which in turn controls the extension of the cylindrical lock head 13, serving as the power source for the cylindrical lock head 13. The L-shaped push lever 14 is a transmission mechanism inside the lock body 1 that can rotate around an axis. It drives the L-shaped push lever 15 through the electromagnetic field of the electromagnetic coil, thereby controlling the movement of the cylindrical lock head 13. The return spring 16 mainly provides elastic force to push the cylindrical lock head 13 and the L-shaped push lever 15 back to their original positions when the power is off. The strike plate 2 is a metal component mounted on the door panel, with a lock hole in the middle. The lock hole and the cylindrical lock head 13 are engaged to achieve the locked state. Precise alignment of the cylindrical lock head 13 and the lock hole of the strike plate 2 is required to ensure that the cylindrical lock head 13 can extend and retract smoothly. The strike plate has two second mounting holes at both ends for fixing it to the door panel. The strike plate 2 also has a sensing magnet for sensing the opening and closing status of the door, thereby realizing the door opening and locking functions.

[0004] In summary, the working principle of the electric bolt lock is as follows: When energized, the electromagnetic coil 14 generates an electromagnetic field. When the electromagnetic coil senses the induction magnet on the strike plate 2, it pushes the L-shaped push lever 15, causing the cylindrical lock head 13 to pop out and enter the keyhole, achieving the locked state (specifically: the movement generated by the electromagnetic coil 14 when energized is horizontal, while the cylindrical lock head 13 needs to move vertically downwards when working (to achieve the locking function); in order to convert the horizontal movement of the electromagnetic coil 14 into vertical movement, an L-shaped push lever 15 is set up, and one end of the L-shaped push lever 15 is connected to the lock body with a hinge, so that it can achieve the function of rotating around the axis, thereby converting the horizontal movement into vertical movement and achieving the locking function); when de-energized, the electromagnetic coil 14 does not generate a magnetic field, and the return spring 16 pushes the cylindrical lock head 13 and the L-shaped push lever 15 back to their original positions, and the cylindrical lock head 13 retracts, achieving the unlocked state.

[0005] However, since installing electric bolt locks requires drilling holes in the door frame or door body, the accuracy of this drilling directly affects the effectiveness of the lock. Furthermore, the high frequency of opening and closing of doors in offices and training rooms daily can easily lead to slight deformation of the doors. Therefore, if the drilling position is inaccurate or the door body is deformed, the lock cylinder and lock hole will be difficult to align, not only failing to lock the door successfully but also causing the lock cylinder to repeatedly extend and retract, generating noise and posing a safety hazard. Additionally, when installing the lock body shell and lock cover, if the current electric bolt lock cover only has a connecting mounting hole, the threaded holes on the shell and the mounting holes on the cover need to be manually aligned during assembly, causing inconvenience during the installation of the electric bolt lock or the replacement of parts. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a lock head structure and an electric bolt lock, aiming to optimize the lock head structure and avoid the problem of the lock head and lock hole failing to close due to insufficient drilling accuracy and slight deformation of the door body; furthermore, it optimizes the lock cover structure to avoid the inconvenience caused by repeatedly aligning the threaded holes manually during the installation process of the electric bolt lock or the replacement of parts.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A lock head structure for an electric bolt lock includes a lock head having an axial direction, the lock head extending along its axial direction and having a tapered structure at its bottom, the tapered structure being adapted to a lock hole on a strike plate on the lock head structure.

[0008] Preferably, the cone structure has a conical lower end.

[0009] Preferably, the lock head also has a cylindrical upper end, and the cylindrical lower end is connected to the conical lower end in the axial direction. Preferably, the cylindrical upper end and the conical lower end are an integral structure.

[0010] Preferably, the lower conical end is a cone with a cross-sectional angle of 60°.

[0011] Preferably, when the conical lower end moves axially through the key hole until the lower part of the cylindrical upper end enters the key hole, the lock head is inserted into the key hole.

[0012] An electric bolt lock includes the lock cylinder structure described above, and further includes a housing and a lock cover that cooperates with the lock body. Furthermore, a positioning mechanism is provided on both the lock cover and the outer shell, and the lock cover has a mounting through hole, with the positioning mechanism corresponding to the mounting through hole.

[0013] Preferably, the positioning mechanism is a positioning hole and a positioning pin. The positioning hole is formed on the lock cover and is adapted to the mounting through hole on the lock cover. The positioning pin is provided on the outer shell and is adapted to the positioning hole.

[0014] Preferably, there are two positioning holes on the lock cover, and the two positioning holes are located at opposite ends of the lock cover.

[0015] Preferably, there are two positioning holes on the lock cover, and the two positioning holes are located at the same two ends on the same side of the lock cover.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. By changing the lock head structure, the original cylindrical lock head is optimized into a conical lock head. The conical lower end compensates for positioning accuracy errors or slight deformation errors of the door body caused by repeated opening and closing. When the error is too large, the cone angle of the lock body can be adjusted according to the actual situation to increase its matching error compensation, which greatly improves the success rate of locking the electric bolt lock.

[0017] 2. By adding a positioning structure for the lock body and lock cover, the steps of manually aligning the threaded holes and through holes are simplified, improving installation efficiency and laying the foundation for automated assembly in the later stage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external overall structure in the prior art; Figure 2 This is a schematic diagram of the internal overall structure in the prior art; Figure 3 This is a schematic diagram of the overall external structure of this utility model; Figure 4 This is a schematic diagram of the internal overall structure of this utility model; Figure 5 This is a schematic diagram showing the state in which the conical lower end of the lock head is inserted into the lock hole in this utility model; Figure 6 This is a top view of the latch plate in this utility model; Figure 7 for Figure 6 A partially enlarged structural diagram; Figure 8 for Figure 6 Sectional view along the BB direction; Figure 9 for Figure 8 A partially enlarged structural diagram; In the figure: lock body 1; outer shell 11, threaded hole 111; lock cover 12; mounting through hole 121; positioning mechanism 122; positioning hole 1221; positioning pin 1222; cylindrical lock head 13; electromagnetic coil 14, L-shaped push lever 15; return spring 16; lock head 17; cylindrical upper end 171; conical lower end 172; strike plate 2. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments are described in detail with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0020] like Figure 3-9 As shown, a lock head structure for an electric bolt lock includes a lock head 17 having an axial direction A. The lock head 17 extends along its axial direction A and has a conical structure at its bottom. Specifically, the conical structure is a conical lower end 172 with a cross-sectional angle of 60°. The lock head 17 also has a cylindrical upper end 171, and the cylindrical lower end 131 is connected to the conical lower end 172 along the axial direction, preferably as an integral structure. The conical structure is adapted to the lock hole on the strike plate 2 of the lock head structure. That is, when the conical lower end 172 moves along the axial direction A through the lock hole until the lower part of the cylindrical upper end 171 enters the lock hole, the lock head 17 is inserted into the lock hole.

[0021] An electric bolt lock includes the above-described lock head structure, and further includes a housing 11 and a lock cover 12 that mates with the housing 11. The lock cover 12 and the housing 11 share a positioning mechanism, specifically: the positioning mechanism 122 consists of a positioning hole 1221 and a positioning pin 1222. The positioning hole 1221 is formed on the lock cover 12, and the positioning hole 1221 is adapted to a mounting through hole 121 on the lock cover 12. The positioning pin 1222 is located on the housing 11 and is adapted to the positioning hole 1221. The lock cover 12 has a mounting through hole 121, and the positioning mechanism corresponds to the mounting through hole 121. Furthermore, there are two positioning holes 1221 on the lock cover 12, and the two positioning holes... 1221 is located at both ends of the lock cover 12 on opposite sides; its purpose is to first position the lock cover 12 by using the positioning pin 1222 and the positioning hole 1221 when assembling the outer shell 11 and the lock cover 12. That is, the positioning pin 1222 and the positioning hole 1221 cooperate, and the six degrees of freedom of the lock cover are restricted by the positioning method of one side and two holes to completely position it. The position of the positioning hole 1221 and the mounting through hole 121 are determined. Therefore, when the positioning hole 1221 and the positioning pin 1222 cooperate, the mounting through hole 121 is aligned with the threaded hole of the lock body 1. Finally, the outer shell 11 and the lock cover 12 are connected and fastened by screws. No manual alignment is required, which improves the assembly efficiency and lays the foundation for the subsequent automated assembly.

[0022] In another embodiment, there are two positioning holes 1221 on the lock cover 12, and the two positioning holes 1221 are located at the same two ends on the same side of the lock cover 12 (not shown in the figure).

[0023] Additionally, it should be noted that the lock head structure in this embodiment also includes a strike plate 2; the lock body 1 further includes a housing 11, an electromagnetic coil 14, an L-shaped push lever 15, and a return spring 16; the housing 11 is typically made of sturdy metal and has multiple threaded holes 111 that are connected and fixed to the lock cover 12 by screws to protect the internal parts from damage; the lock cover 12 typically has multiple mounting holes 121 for connecting the lock cover 12 and the lock body 1, and the lock cover 12 has two first mounting holes 122 at both ends for fixing the lock body 1 to the lock body. On the door frame; the lock head 17 is made of metal. When the conical lower end 172 of the lock head 17 extends and inserts into the lock hole on the strike plate 2, the door is locked; when it retracts, the door is opened. For this purpose, the conical lower end 172 is a cone with a cross-sectional angle of 60°. When the fit error between the lock head 17 and the lock hole exceeds 1mm, the error can still be compensated by the inclined surface (conical surface) of the cone. When the electromagnet pushes the L-shaped push lever to pop out the lock head 17, the head of the cone enters the lock hole, and at the same time, the inclined surface (conical surface) guides the lock head 17 into the lock hole to achieve the purpose of locking the door.

[0024] The electromagnetic coil 14 is the core component of the electric bolt lock. It consists of enameled wire wound around an iron core. When energized, it generates an electromagnetic field, which pushes the L-shaped push lever 15, thereby controlling the extension of the lock head 17. It is the power source for the lock head 17. The L-shaped push lever 14 is a transmission mechanism inside the lock body 1 that can rotate around an axis. The electromagnetic field of the electromagnetic coil drives the L-shaped push lever 15 to move, thereby controlling the movement of the lock head 17 (specifically, the movement generated by the electromagnetic coil 14 when energized is horizontal, while the lock head 17 needs to move vertically downwards when working (locking the door). In order to convert the horizontal movement of the electromagnetic coil 14 into vertical movement, an L-shaped push lever is set up. One end of the L-shaped push lever 15 is connected to the lock body with a hinge, so that it can realize the function of rotating around an axis, thereby converting the horizontal movement into vertical movement and realizing the locking function). The return spring 16 mainly provides elastic force to push the lock head 17 and the L-shaped push lever 15 back to their original positions when the power is off. The strike plate 2 is a metal component installed on the door panel. It has a lock hole in the middle. The door is locked by the lock hole and the lock head 17. The lock head 17 and the lock hole of the strike plate 2 need to be precisely aligned to ensure that the lock head 17 can extend and retract smoothly. The strike plate has two second mounting holes at both ends for fixing it to the door panel. The strike plate 2 also has a sensor magnet for sensing the opening and closing status of the door, thereby realizing the door opening and locking functions.

[0025] In summary, the working principle of the electric bolt lock is as follows: When the power is on, the electromagnetic coil 14 is energized and generates an electromagnetic field. When the electromagnetic coil senses the induction magnet on the strike plate 2, it pushes the L-shaped push lever 15, causing the lock head 17 to pop out and enter the keyhole, thus achieving the locked state. When the power is off, the electromagnetic coil 14 does not generate a magnetic field, and the return spring 16 pushes the lock head 17 and the L-shaped push lever 15 back to their original positions, and the lock head 17 retracts, thus achieving the unlocked state.

[0026] In addition, it should be noted that in this utility model, the lock head structure is optimized from the original cylinder to a cone, and the lock head can also be optimized to a frustum or other structures. The essence of all these is to reduce the size of the lock head and thus increase error compensation.

[0027] In addition, the 60° cone angle is not a fixed angle; the cone angle can be adjusted according to the actual situation to meet the locking requirements under different fit error conditions.

[0028] Furthermore, the positioning structure of the lock body and lock cover is not limited to the form of positioning pins and positioning holes. It includes, but is not limited to, the matching form of bosses and grooves. Positioning buckles, positioning slots, etc. can also be used as replacements. The essence of all is to add positioning devices to avoid repeated manual alignment and meet the positioning requirements during assembly.

[0029] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A lock head structure for an electric bolt lock, comprising a lock head, characterized in that, The lock head has an axial direction, extends along its axial direction, and has a conical structure at its bottom, which is adapted to a lock hole on a strike plate on the lock head structure.

2. The lock head structure for an electric bolt lock according to claim 1, characterized in that: The cone structure has a conical lower end.

3. The lock head structure for an electric bolt lock according to claim 2, characterized in that: The lock head also has a cylindrical upper end, and the cylindrical lower end is connected to the conical lower end in the axial direction.

4. The lock head structure for an electric bolt lock according to claim 3, characterized in that: The lower end of the cone is a cone with a cross-sectional angle of 60°.

5. A lock head structure for an electric bolt lock according to claim 4, characterized in that: When the lower conical end moves axially through the keyhole until the lower part of the upper cylindrical end enters the keyhole, the lock head is inserted into the keyhole.

6. An electric bolt lock, comprising the lock head structure as described in any one of claims 1-5, characterized in that, It also includes, The housing and the lock cover that mates with the housing, wherein the lock cover and the housing are provided with a positioning mechanism, and the lock cover has a mounting through hole, and the positioning mechanism corresponds to the mounting through hole.

7. An electric bolt lock according to claim 6, characterized in that: The positioning mechanism consists of a positioning hole and a positioning pin. The positioning hole is formed on the lock cover and is adapted to the mounting through hole on the lock cover. The positioning pin is provided on the outer shell and is adapted to the positioning hole.

8. An electric bolt lock according to claim 7, characterized in that: There are two positioning holes on the lock cover, and the two positioning holes are located at opposite ends of the lock cover.

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