Lock bolt mechanism

Abstract

The utility model discloses a lock bolt mechanism which comprises a motor, a reduction gear set and a lock tongue. The motor is matched with the reduction gear set to drive the spring bolt to stretch out and draw back, one end of the connecting piece is eccentrically and rotatably connected with the end of the spring bolt driving wheel, and the other end of the connecting piece is rotatably connected with the spring bolt; the spring bolt driving wheel is linked with the reduction gear set and rotates along with the rotation of the reduction gear set; and the connecting piece rotates along with the spring bolt driving wheel to drive the spring bolt to telescopically move. According to the utility model, switching of positive and negative rotation of the motor and a driving circuit can be reduced, and requirements on installation space can be reduced.

Description

Technical Field

[0001] The utility model relates to a lock, in particular to a locking bolt mechanism. Background Art

[0002] The electric bolt mechanism is generally driven by the forward and reverse rotation of the motor to produce the extension and retraction action of the lock tongue, thereby achieving unlocking and locking.

[0003] The problem with this traditional electric bolt lock mechanism is that it needs to cooperate with the circuit structure of switching and driving the motor forward and reverse, so it has certain requirements for the space of the circuit setting. For some standards or requirements with higher requirements on volume, the traditional forward and reverse structure may lead to insufficient installation space. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a locking mechanism that can reduce the switching of the forward and reverse rotation of the motor and the driving circuit, and can reduce the requirements for the installation space.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking bolt mechanism, including a motor, a reduction gear set, and a lock tongue; the motor cooperates with the reduction gear set to drive the lock tongue to telescope and move, and also includes a lock tongue driving wheel and a connecting piece, one end of the connecting piece is eccentrically and rotatably connected to the end of the lock tongue driving wheel, and the other end is rotatably connected to the lock tongue; the lock tongue driving wheel is linked to the reduction gear set and rotates with the reduction gear set; the connecting piece rotates with the lock tongue driving wheel to drive the lock tongue to telescope and move.

[0006] As a further improvement of the utility model, the locking tongue is slidably connected to a guide rail, and the locking tongue telescopically moves along the guide rail.

[0007] As a further improvement of the present invention, the lock tongue driving wheel is also connected to an auxiliary driving wheel, and a connecting piece is also provided on the auxiliary driving wheel. One end of the connecting piece is eccentrically and rotatably connected to the end of the auxiliary driving wheel, and the other end is rotatably connected to the lock tongue. The connecting pieces on the lock tongue driving wheel and the auxiliary driving wheel are arranged in mirror images and move synchronously in mirror images. The lock tongue driving wheel and the auxiliary driving wheel are meshed and rotate synchronously.

[0008] As a further improvement of the utility model, a locking piece is also provided on the lock tongue, and a hook is provided on the side of the locking piece to cooperate with the external panel to limit the contraction of the lock tongue, and the locking piece maintains the tendency to move or rotate outward by a spring; the connecting piece is fixedly connected to an installation shaft at one end corresponding to the lock tongue, and the installation shaft is rotatably connected to the lock tongue, and a push rod is also fixedly connected to the side of the installation shaft, and the end of the push rod abuts against the locking piece, and the installation shaft rotates reciprocatingly with the movement of the connecting piece, and reciprocally squeezes the locking piece or releases the locking piece to retract or pop out the hook.

[0009] As a further improvement of the utility model, a worm is arranged on the output shaft of the motor, and the worm is meshed with the reduction gear set to form a worm gear match.

[0010] As a further improvement of the utility model, it also includes a manual driving component, which is linked with the lock tongue driving wheel to manually drive the lock tongue to telescopically move; the lock tongue driving wheel is provided with a slide groove at the end corresponding to the reduction gear group, and the reduction gear group is provided with a slider located in the slide groove, and the slide groove extends along the circumference of the lock tongue driving wheel. When the slider abuts against the side wall of the slide groove, the reduction gear group pushes the lock tongue driving wheel to rotate; the manual driving component and the motor drive the lock tongue driving wheel to rotate in the same direction.

[0011] As a further improvement of the utility model, it also includes a manual driving component, which is linked with the auxiliary driving wheel to manually drive the lock tongue to telescopically move; the lock tongue driving wheel is provided with a slide groove at the end corresponding to the reduction gear group, and the reduction gear group is provided with a slider located in the slide groove, and the slide groove extends along the circumference of the lock tongue driving wheel. When the slider abuts against the side wall of the slide groove, the reduction gear group pushes the lock tongue driving wheel to rotate; the manual driving component and the auxiliary driving wheel rotate in the same direction when driven by the lock tongue driving wheel.

[0012] As a further improvement of the present invention, the manual drive part includes a drive shaft and a movable part, and the drive shaft rotates with the movable part; and the side of the movable part is provided with teeth for engaging with the auxiliary drive wheel, and the movable part is also maintained by an elastic part to rotate and disengage from the auxiliary drive wheel. When the drive shaft rotates, the movable part rotates and engages with the auxiliary drive wheel, and then drives the auxiliary drive wheel to rotate, so as to manually drive the lock tongue to extend and retract.

[0013] The beneficial effects of the present invention are as follows: the motor cooperates with the reduction gear set to generate a driving force with sufficient torque, which can be used to drive the lock tongue driving wheel to rotate. Since the connecting piece and the lock tongue driving wheel are eccentrically and rotatably connected, a crankshaft connecting rod structure (similar to the working principle of the engine piston connecting rod) can be formed. The lock tongue driving wheel only needs to rotate in one direction to realize the reciprocating extension and retraction action of the lock tongue, thereby reducing the circuit structure of the motor's forward and reverse switching, and to a certain extent, the design requirements for the installation space can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the three-dimensional state of the overall structure of the utility model;

[0016] Figure 3 It is an exploded schematic diagram of the main structure of the utility model;

[0017] Figure 4 This is an exploded schematic diagram of the main structure of the utility model from another perspective;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 6 for Figure 5 A magnified schematic diagram of part A in FIG.

[0020] Figure 7 It is a structural schematic diagram of a single connecting piece of the utility model.

[0021] Figure numbers: 1, motor; 11, worm; 2, reduction gear set; 21, slider; 3, lock tongue; 31, locking piece; 311, hook; 312, mounting shaft; 32, spring; 33, push rod; 4, lock tongue driving wheel; 41, slide groove; 5, connecting piece; 6, guide rail; 7, auxiliary driving wheel; 8, manual driving piece; 81, driving shaft; 82, movable piece; 83, elastic part. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0023] Reference Figure 1-7 As shown,

[0024] A locking bolt mechanism comprises a motor 1, a reduction gear set 2, and a lock tongue 3; the motor 1 cooperates with the reduction gear set 2 to drive the lock tongue 3 to telescope and move, and also comprises a lock tongue driving wheel 4 and a connecting member 5, one end of the connecting member 5 is eccentrically and rotatably connected to the end of the lock tongue driving wheel 4, and the other end is rotatably connected to the lock tongue 3; the lock tongue driving wheel 4 is linked with the reduction gear set 2 and rotates as the reduction gear set 2 rotates; the connecting member 5 rotates with the lock tongue driving wheel 4 to move the lock tongue 3 telescopically.

[0025] This plan refers to Figure 1 and 7 As shown, a motor 1 is used in conjunction with a reduction gear set 2 to generate a driving force with sufficient torque, which can be used to drive the lock tongue driving wheel 4 to rotate. Since the connecting member 5 and the lock tongue driving wheel 4 are eccentrically and rotatably connected, a crankshaft connecting rod structure (similar to the working principle of an engine piston connecting rod) can be formed. The lock tongue driving wheel 4 only needs to rotate in one direction to realize the reciprocating telescopic action of the lock tongue 3, thereby reducing the circuit structure of the forward and reverse switching of the motor 1, which can reduce the design requirements for the installation space to a certain extent.

[0026] The locking bolt mechanism in this scheme needs to be installed in a shell for use, and the shell itself has an opening to allow the lock tongue 3 to extend and lock, so that the lock tongue 3 can be used for extension and retraction, while producing a certain guiding effect. As an implementation method to make the extension and retraction state of the lock tongue 3 more stable, the lock tongue 3 is slidably connected to a guide rail 6, and the lock tongue 3 moves along the guide rail 6.

[0027] The guide rail 6 can be a convex strip or a groove, and the lock tongue 3 cooperates with the convex strip or the groove, and a corresponding structure capable of cooperating with the sliding guide is set. For example, if the lock tongue 3 is a convex strip, the guide rail 6 is a groove.

[0028] The guide rail 6 can be set on the shell. The guide rail 6 can make the sliding of the lock tongue 3 more stable, the guiding effect is better, and the problem of swing is reduced. It can also make the working state of the connecting part 5 more stable. The swing of the lock tongue 3 will not cause the unstable cooperation between the connecting part 5 and the lock tongue driving wheel 4, or even cause jamming, increase the compliance of the motor 1, or even burn the motor 1.

[0029] In the above structure, the number of the connecting member 5 can be one, or two. The specific configuration can be as follows:

[0030] The locking tongue driving wheel 4 is also connected to an auxiliary driving wheel 7, and a connecting member 5 is also provided on the auxiliary driving wheel 7. One end of the connecting member 5 is eccentrically and rotatably connected to the end of the auxiliary driving wheel 7, and the other end is rotatably connected to the locking tongue 3. The locking tongue driving wheel 4 and the connecting member 5 on the auxiliary driving wheel 7 are mirror-imaged and move synchronously. The locking tongue driving wheel 4 and the auxiliary driving wheel 7 are meshed and rotate synchronously.

[0031] Reference Figure 1 As shown in , an auxiliary driving wheel 7 is further added in this solution. The specifications of the auxiliary driving wheel 7 are preferably consistent with those of the bolt driving wheel 4 (including diameter and number of teeth, so that the angular velocity of the two is the same), so that the mirror-set connectors 5 can maintain a synchronous motion state, and the synchronous state maintains synchronization of actions under the mirror relationship. Based on this synchronous relationship, the two connectors 5 can synchronously drive the bolt 3 to telescopically move, and realize stable movement of the bolt 3. Compared with one connector 5, the movement mode of the two connectors 5 is more stable in working state, and the force on the bolt 3 can be more uniform when it moves.

[0032] In order to improve security, a locking piece 31 is also provided on the lock tongue 3, and a hook 311 is provided on the side of the locking piece 31 to cooperate with the external panel to limit the contraction of the lock tongue 3, and the locking piece 31 maintains the tendency to move or rotate outward through a spring 32; the connecting piece 5 is fixedly connected to an installation shaft 312 at one end corresponding to the lock tongue 3, and the installation shaft 312 is rotatably connected to the lock tongue 3, and a push rod 33 is also fixedly connected to the side of the installation shaft 312, and the end of the push rod 33 abuts on the locking piece 31, and the installation shaft 312 rotates back and forth with the movement of the connecting piece 5, and reciprocally squeezes the locking piece 31 or releases the locking piece 31 to retract or pop out the hook 311.

[0033] After the lock tongue 3 extends out of the shell, the locking member 31 can extend together with the lock tongue 3, and will open outward under the elastic force of the spring 32, using the hook 311 to hook the outer surface of the shell, thereby locking the lock tongue 3 and making it difficult to be retracted by external force.

[0034] The locking member 31 is preferably mounted on the locking tongue 3 in a rotating manner. Under the action of elastic force, the locking member 31 will maintain a tendency to pop outward. However, due to the squeezing of the push rod 33, although it has a tendency to move, it will not pop out by itself, but will maintain a state of contact with the push rod 33 and rotate as the position of the push rod 33 changes. In this structure, when the locking tongue driving wheel 4 and the auxiliary driving wheel 7 rotate, the connecting member 5 and the locking tongue 3 will be in a state of crankshaft connecting rod movement. At this time, the connecting member 5 will be in a state of rotation relative to the locking tongue 3, and the rotation is carried out by the installation shaft 312 to rotate with the locking tongue 3. The connecting member 5 itself is in a fixed connection state with the installation shaft 312 (for example, welding, integral molding), so the push rod 33 fixedly connected to the side of the installation shaft 312 will rotate with the rotation of the installation shaft 312, and at this time, the locking member 31 can cooperate with the push rod 33 to pop out and retract.

[0035] Reference Figure 5 and 6 As shown in the figure, the number of the locking members 31 can be two, and they are respectively arranged corresponding to the positions of the two connecting members 5. The spring 32 is installed between the two locking members 31, and the elastic force can be provided by respectively abutting the corresponding locking members 31 at both ends of the spring 32.

[0036] In the above structure, in order to increase the locking effect, a worm 11 is provided on the output shaft of the motor 1, and the worm 11 meshes with the reduction gear set 2 to form a worm gear 11. This structural cooperation can form a self-locking effect, has higher safety, and at the same time has greater distortion, and has lower power requirements for the motor 1, which is more energy-saving.

[0037] As an implementation method to improve the interaction, it also includes a manual driving component 8, which is linked with the lock tongue driving wheel 4 to manually drive the lock tongue 3 to telescopically move; the lock tongue driving wheel 4 is provided with a slide groove 41 at the end corresponding to the reduction gear group 2, and the reduction gear group 2 is provided with a slider 21 located in the slide groove 41, and the slide groove 41 extends along the circumference of the lock tongue driving wheel 4. When the slider 21 abuts against the side wall of the slide groove 41, the reduction gear group 2 pushes the lock tongue driving wheel 4 to rotate; the manual driving component 8 and the motor 1 drive the lock tongue driving wheel 4 to rotate in the same direction.

[0038] The manual drive member 8 can be unlocked by a handle or a mechanical key assembly, and the telescopic movement of the lock tongue 3 is finally achieved by applying a rotational action externally. However, due to the cooperation of the worm gear 11, a self-locking effect will be generated. In this solution, the slide 21 on the reduction gear set 2 is used to rotate the lock tongue drive wheel 4 through the cooperation of the slide 41 and the slider 21. Since the slide 41 itself has an empty part, if the lock tongue drive wheel 4 rotates in the same direction, it will not be affected by the self-locking of the worm gear 11. The empty part of the slide 41 is the stroke that can be used for the lock tongue drive wheel 4 to rotate in the same direction. The stroke can be set according to the unlocking angle requirement, at least to ensure that the lock tongue drive wheel 4 can retract the lock tongue 3 after rotating in the same direction at an angle corresponding to the stroke. After the unlocking is completed, the lock tongue drive wheel 4 can be reset by manual driving again, so that the slider 21 and the slide 41 return to their original positions to abut each other, so that the motor 1 can maintain a state of continuous transmission, and reduce the idling problem that causes the motor 1 to drive the lock tongue 3 to shrink. Changes change, affecting accuracy.

[0039] The above solution is to directly cooperate the manual drive member 8 with the bolt drive wheel 4 to realize manual unlocking. The following also provides a method in which the manual drive member 8 drives the auxiliary drive wheel 7 to rotate to unlock:

[0040] It also includes a manual driving component 8, which is linked with the auxiliary driving wheel 7 to manually drive the locking tongue 3 to telescope and move; the locking tongue driving wheel 4 is provided with a slide groove 41 at the end corresponding to the reduction gear set 2, and the reduction gear set 2 is provided with a slider 21 located in the slide groove 41, and the slide groove 41 extends along the circumference of the locking tongue driving wheel 4. When the slider 21 abuts against the side wall of the slide groove 41, the reduction gear set 2 pushes the locking tongue driving wheel 4 to rotate; the manual driving component 8 and the auxiliary driving wheel 7 rotate in opposite directions when driven by the locking tongue driving wheel 4.

[0041] The auxiliary drive wheel 7 is in meshing state with the bolt drive wheel 4, so when the auxiliary drive wheel 7 is driven to rotate by the manual drive member 8, the bolt drive wheel 4 can also rotate, and the working process is the same as the above. According to the specific volume and structural layout requirements, you can choose between these two schemes.

[0042] Specifically, the manual drive member 8 includes a drive shaft 81 and a movable member 82, and the drive shaft 81 rotates with the movable member 82; and the side of the movable member 82 is provided with teeth for engaging with the auxiliary drive wheel 7, and the movable member 82 is also maintained by an elastic member 83 to rotate and disengage from the auxiliary drive wheel 7. When the drive shaft 81 rotates, the movable member 82 rotates and engages with the auxiliary drive wheel 7 to drive the auxiliary drive wheel 7 to rotate, so as to manually drive the lock tongue 3 to extend and retract.

[0043] Reference Figure 1 , 5 As shown in , 7, the drive shaft 81 itself can be used as a component of the lock core connecting the handle or the mechanical key assembly. When the drive shaft 81 rotates, it can rotate with the movable part 82 (the movable part 82 is not engaged with the auxiliary drive wheel 7 in the initial state). As the movable part 82 rotates, the teeth on the movable part 82 engage with the auxiliary drive wheel 7, and the movable part 82 rotates with the auxiliary drive wheel 7 to achieve unlocking. After unlocking, the drive shaft 81 is released (that is, no force is applied to the handle or mechanical key). At this time, under the action of elastic force, the movable part 82 and the drive shaft 81 rotate in the opposite direction to restore, and the movable part 82 is disengaged from the auxiliary drive wheel 7 again, completing one unlocking and restoration. It needs to be ensured that the number of teeth on the movable part 82 is at least enough to cooperate with the stroke of the slide groove 41 to complete the extension and retraction of the lock tongue 3 once, so as to avoid the inability to completely retract the lock tongue 3 due to insufficient number of teeth.

[0044] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A locking bolt mechanism, comprising a motor, a reduction gear set, and a lock tongue; the motor and the reduction gear set cooperate to drive the lock tongue to telescope, characterized in that: It also includes a lock tongue driving wheel and a connecting piece, one end of the connecting piece is eccentrically and rotatably connected to the end of the lock tongue driving wheel, and the other end is rotatably connected to the lock tongue; the lock tongue driving wheel is linked to the reduction gear set and rotates with the reduction gear set; the connecting piece rotates with the lock tongue driving wheel and moves with the lock tongue.

2. The locking mechanism according to claim 1, characterized in that: The locking tongue is slidably connected to a guide rail, and the locking tongue telescopically moves along the guide rail.

3. The locking mechanism according to claim 1, characterized in that: The lock tongue driving wheel is also connected to an auxiliary driving wheel, and a connecting piece is also provided on the auxiliary driving wheel. One end of the connecting piece is eccentrically and rotatably connected to the end of the auxiliary driving wheel, and the other end is rotatably connected to the lock tongue. The connecting pieces on the lock tongue driving wheel and the auxiliary driving wheel are mirror-imaged and move synchronously. The lock tongue driving wheel and the auxiliary driving wheel are meshed and rotate synchronously.

4. The locking mechanism according to claim 1, 2 or 3, characterized in that: The lock tongue is also provided with a locking piece, and a hook is provided on the side of the locking piece to cooperate with the external panel to limit the contraction of the lock tongue, and the locking piece maintains the tendency to move or rotate outward by a spring; the connecting piece is fixedly connected with a mounting shaft at one end corresponding to the lock tongue, and the mounting shaft is rotatably connected to the lock tongue, and a push rod is also fixedly connected to the side of the mounting shaft, and the end of the push rod abuts against the locking piece, and the mounting shaft rotates back and forth with the movement of the connecting piece, and reciprocally squeezes the locking piece or releases the locking piece to retract or pop out the hook.

5. The locking mechanism according to claim 1, 2 or 3, characterized in that: A worm is arranged on the output shaft of the motor, and the worm is meshed with the reduction gear set to form a worm gear match.

6. The locking mechanism according to claim 5, characterized in that: It also includes a manual driving component, which is linked with the lock tongue driving wheel to manually drive the lock tongue to telescopically move; the lock tongue driving wheel is provided with a slide groove at the end corresponding to the reduction gear group, and the reduction gear group is provided with a slider located in the slide groove, and the slide groove extends along the circumference of the lock tongue driving wheel. When the slider abuts against the side wall of the slide groove, the reduction gear group pushes the lock tongue driving wheel to rotate; the manual driving component and the motor drive the lock tongue driving wheel to rotate in the same direction.

7. The locking mechanism according to claim 5, characterized in that: It also includes a manual driving component, which is linked with the auxiliary driving wheel to manually drive the lock tongue to telescope and move; a sliding groove is provided at the end of the lock tongue driving wheel corresponding to the reduction gear group, and the reduction gear group is provided with a sliding block located in the sliding groove, and the sliding groove extends along the circumference of the lock tongue driving wheel. When the sliding block abuts against the side wall of the sliding groove, the reduction gear group pushes the lock tongue driving wheel to rotate; the manual driving component and the auxiliary driving wheel have the same rotation direction when driven by the lock tongue driving wheel.

8. The locking mechanism according to claim 7, characterized in that: The manual drive member includes a drive shaft and a movable member, and the drive shaft rotates with the movable member; and the side of the movable member is provided with teeth for engaging with the auxiliary drive wheel, and the movable member is also maintained by an elastic member to rotate and disengage from the auxiliary drive wheel. When the drive shaft rotates, the movable member rotates and engages with the auxiliary drive wheel to drive the auxiliary drive wheel to rotate, so as to manually drive the lock tongue to extend and retract.

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