CN220395405U - Lock clutch capable of preventing motor overload - Google Patents

Abstract

The utility model provides a lock clutch capable of preventing motor overload, and belongs to the technical field of locks. According to the utility model, the screw is coaxially arranged on the output shaft of the motor, the sliding block is arranged to be matched with the bolt poking assembly, the transmission rod is arranged along the radial direction of the screw, one end of the transmission rod is clamped into the threaded tooth groove, the other end of the transmission rod is connected with the sliding block, when the motor drives the screw to rotate, the transmission rod is driven by the screw to move along the axial direction of the screw through the threaded teeth on the transmission rod, so that the sliding block is driven to push the bolt poking assembly to act, unlocking is realized, and the transmission rod can be prevented from being continuously pushed by the screw through the transmission rod which is separated from the threads at the two ends of the screw, so that when the poking assembly fails and can not act, the transmission rod can not continuously limit the rotation of the motor, the normal rotation of the motor is ensured, the problem of burning of the motor is avoided, the structure is simple, the assembly is convenient, the subsequent overhaul is facilitated, the manufacturing and overhaul cost is reduced, and the market expansion is facilitated.

Description

Lock clutch capable of preventing motor overload

Technical Field

The utility model relates to the technical field of locks, in particular to a lock clutch capable of preventing motor overload.

Background

The existing electronic lock in the market at present can not only give consideration to the traditional key unlocking function, but also have the electronic unlocking function, can realize unlocking under the condition of not using a key, is more convenient to use, and is favored by the market.

The electronic unlocking part in the existing electronic lock is usually a motor to drive the lock tongue to move so as to meet unlocking requirements. As disclosed in patent CN113719198A, a mechanical overload protection motor module applied to a fingerprint lock body is disclosed, a movable swing rod is sleeved on a swing rod installation shaft, a clutch driving gear is sleeved on the swing rod installation shaft and the upper end side of the movable swing rod, a movable gear shaft which is vertically arranged is installed at the free end of the movable swing rod, a clutch driven gear which is positioned at the upper end side of the free end of the movable swing rod is sleeved on a movable gear shaft, the clutch driven gear is meshed with the clutch driving gear, the clutch driven gear is contacted with the free end of the movable swing rod, an elastic piece of a downward low-pressure clutch driven gear is installed at the upper end of the movable gear shaft, a driving motor is in driving connection with the clutch driving gear through a reduction gear set, in addition, a compression spring is sleeved on the periphery of the movable gear shaft, a spring stop shoulder is arranged at the upper end of the movable gear shaft corresponding to the compression spring, the upper end of the compression spring is in butt joint with the spring stop shoulder, the lower end of the compression spring is abutted with the clutch driven gear, when the clutch driven gear is in working, the compression spring downwards abuts against the clutch driven gear, so that friction force is generated between the clutch driven gear and the upper surface of the free end of the movable swinging rod, when the driving motor rotates forwards, the driving motor drives the 357640 song clutch driving gear to rotate, the clutch driving gear is meshed with the clutch driven gear, the clutch driven gear rotates synchronously with the clutch driving gear, the movable swinging rod is deflected by means of friction force between the clutch driving gear and the movable half hundred, the clutch driven gear moves towards the turntable gear side and then is meshed with each other, the clutch driving gear is meshed with the clutch driven gear, the clutch driven gear drives the turntable gear to rotate, the rotating turntable gear drives the output gear shaft to rotate, so that the driving of the lock cylinder is realized, and when the driving motor rotates reversely, the movable swing rod can not deflect towards the side of the turntable gear, so that the clutch driven gear and the turntable gear can not be meshed, when the driving motor does not act or external force acts on the output gear shaft, the clutch driven gear and the turntable gear can not be meshed, the clutch driven gear part rotates, idle protection is realized, in addition, when the driving motor rotates positively and the clutch driven gear is meshed with the turntable gear, if the output gear shaft receives larger reverse driving external force, the larger external force can enable the movable swing rod to deflect reversely, so that the clutch driven gear is separated from the turntable gear, and idle protection is realized. Although the structure can meet the protection requirement under the overload condition of the motor, a plurality of gears are required to be matched in a small space, so that the manufacturing difficulty is high, the assembly is not facilitated, the manufacturing cost is high, the maintenance cost after the subsequent damage is high, and the market expansion is not facilitated.

Disclosure of Invention

The utility model aims to solve the above problems in the prior art, and aims to provide a lock clutch capable of preventing motor overload, which is arranged between a bolt poking assembly and a motor, wherein a screw is coaxially arranged on an output shaft of the motor, a transmission rod is arranged along the radial direction of the screw and is transversely arranged in a thread tooth slot of the screw, meanwhile, the end part of the transmission rod is connected to a sliding block, the sliding block is matched with the poking assembly of the bolt, namely, when the motor rotates, the screw pushes the transmission rod to reciprocate along the axial direction of the screw through a thread tooth on the transmission rod, and the sliding block is pushed to reciprocate along the axial direction of the screw through the transmission rod, so that the poking assembly is pushed to move, the unlocking requirement is met, and meanwhile, the transmission rod can be pulled out from the end part of the screw through deformation of the transmission rod when the poking assembly fails, so that the normal rotation of the motor is maintained, the problem of overload and burnout of the motor is avoided, the structure is simple, the assembly is convenient, the subsequent overhaul cost is also convenient, and the market expansion is facilitated.

The specific technical scheme is as follows:

the utility model provides a prevent motor overload's tool to lock clutch, is applicable to the tool to lock that the subassembly was stirred to the area spring bolt, sets up between spring bolt stirring subassembly and motor, has such characteristic, includes: the novel transmission device comprises a shell, a screw rod, a transmission rod and a sliding block, wherein a motor installation cavity, a matching cavity and a sliding cavity are arranged on the shell, the matching cavity is located at one end of the motor installation cavity and is mutually communicated, the motor is installed in the motor installation cavity, an output shaft extends to the matching cavity, the screw rod is arranged in the matching cavity and coaxially installed on the output shaft and rotates along with the output shaft, the sliding cavity is arranged on one side of the matching cavity and is arranged along the axial direction parallel to the screw rod, the sliding cavity is communicated with the matching cavity, the sliding block is arranged in the sliding cavity in a sliding mode, one end of the sliding block extends out of the shell and is connected with a bolt stirring assembly, the transmission rod is arranged along the radial direction of the screw rod and one end of the transmission rod is connected to the sliding block, and the other end of the transmission rod extends into the matching cavity and is clamped into a thread tooth groove on the screw rod.

The utility model provides a foretell tool to lock clutch that motor is prevented transshipping, wherein, still includes reset assembly, reset assembly sets up in the cooperation intracavity, and reset assembly sets up in the one side that the screw rod deviates from the slider, reset assembly is connected with the one end that the transfer line deviates from the connecting slider.

The utility model provides a lock clutch that motor is prevented to overload, wherein, reset assembly includes two expansion springs, and two expansion springs are arranged with end-to-end form, and two expansion springs all arrange along the axial of screw rod, simultaneously, transfer line and screw rod complex one end extend to between two expansion springs.

The utility model provides a lock clutch that motor is prevented to above-mentioned, wherein, reset assembly still includes guide rail and guide block, and the axial arrangement of guide rail along the screw rod, the both ends of guide rail all install on the casing, and simultaneously, the cover is equipped with two guide blocks on the guide rail, and one side that two guide blocks are on the back mutually all is provided with a telescopic spring, and the transfer line extends to one end between two telescopic springs and stretches into between two guide blocks.

The lock clutch for preventing motor overload is characterized in that two transmission rods are arranged and are respectively arranged on two sides of the screw rod.

The lock clutch for preventing motor overload is characterized in that two ends of an elastic rod piece after the middle part of the elastic rod piece is reversely bent form two transmission rods respectively.

The tool to lock clutch that foretell prevent motor overload, wherein, the transfer line is the slice, and first trepanning has been seted up at the middle part of transfer line, and the second trepanning has been seted up to the one end of transfer line, and first trepanning cover is located on the screw rod and is blocked into the screw thread tooth's socket, and the second trepanning cover is located on the guide rail and is located between two guide blocks.

The lock clutch for preventing motor overload is characterized in that the transmission rod is made of spring steel.

The utility model provides a lock clutch that motor is prevented transshipping, wherein, the spacing groove has been seted up on the casing and on being located the chamber bottom in chamber that slides, and the spacing groove is arranged along the direction of movement of slider and is located the one end that the slider stretches out, is provided with outstanding stopper on the slider, and when the slider was installed in the intracavity that slides, the stopper was slided and is located the spacing inslot.

The utility model provides a lock clutch that motor is prevented to overload, wherein, the chamber end that is located motor installation cavity on the casing is provided with a plurality of shock pads, a plurality of shock pad interval arrangements, simultaneously, in the motor installation cavity and be located on the both sides lateral wall and be provided with a plurality of limiting plates, the lower extreme and the chamber end of motor installation cavity of limiting plate are connected, and when the motor is installed in the motor installation cavity, the shell of motor pastes tightly in each shock pad, and blocks into between the limiting plate of both sides.

The technical scheme has the positive effects that:

according to the lock clutch capable of preventing motor overload, the screw is coaxially arranged on the output shaft of the motor, the sliding block is arranged to be matched with the bolt shifting assembly, the transmission rod is arranged between the screw and the sliding block, and is arranged in the radial direction of the screw and clamped into the threaded tooth groove, so that when the motor rotates, the screw pushes the transmission rod to reciprocate along the axial direction of the screw through the threaded teeth on the transmission rod, the sliding block is driven to push the bolt shifting assembly to move, unlocking is achieved, meanwhile, the transmission rod can be prevented from being pushed by the screw continuously by utilizing the state that the transmission rod is separated from the threads at the two ends of the screw, and therefore when the shifting assembly fails and cannot act, normal rotation of the motor can be maintained, the problem that the motor is overloaded and burnt out is avoided.

Drawings

FIG. 1 is a block diagram of an embodiment of a lock-out clutch of the present utility model that is resistant to motor overload;

FIG. 2 is a block diagram of a housing according to a preferred embodiment of the present utility model;

FIG. 3 is a schematic view of the installation of the screw, drive rod and reset assembly according to a preferred embodiment of the present utility model;

FIG. 4 is a block diagram of a reset device according to a preferred embodiment of the present utility model.

In the accompanying drawings: 1. a motor; 2. a housing; 21. a motor mounting cavity; 22. a mating cavity; 23. a sliding cavity; 24. a limit groove; 25. a limiting plate; 26. a shock pad; 3. a screw; 4. a transmission rod; 5. a slide block; 6. a reset assembly; 61. a telescopic spring; 62. a guide rail; 63. and a guide block.

Description of the embodiments

In order to make the technical means, the creation features, the achievement of the purposes and the effects of the present utility model easy to understand, the following embodiments specifically describe the technical solution provided by the present utility model with reference to fig. 1 to 4, but the following disclosure is not limited to the present utility model.

Fig. 1 is a block diagram of an embodiment of a lock clutch of the present utility model for preventing motor overload. As shown in fig. 1, the lock clutch for preventing overload of the motor provided in this embodiment is suitable for a lock with a lock tongue poking component, and is disposed between the lock tongue poking component and the motor 1, that is, the lock tongue poking component is capable of realizing the control of the telescopic action of the lock tongue through the deflection, the lock tongue poking component is provided with a poking rod, the middle part or one end of the poking rod is hinged on the lock shell, the other end of the poking rod is contacted with the end of the lock tongue, and the lock tongue is driven to move by the deflection of the poking rod, so as to meet the telescopic use requirement of the lock tongue. At this time, the motor 1 pushes the lock tongue to stir the subassembly and remove through the overload tool to lock clutch of preventing motor 1 that this embodiment provided to satisfy the unblock demand. In addition, the lock clutch for preventing overload of the motor 1 provided in this embodiment includes a housing 2, a screw 3, a transmission rod 4, and a slider 5.

FIG. 2 is a block diagram of a housing according to a preferred embodiment of the present utility model; FIG. 3 is a schematic view showing the installation of the screw, the driving rod and the reset assembly according to a preferred embodiment of the present utility model. As shown in fig. 1, 2 and 3, the housing 2 is provided with a motor mounting cavity 21, a matching cavity 22 and a sliding cavity 23, so that the space in the housing 2 is partitioned, and the mounting and movement of the following structures are facilitated. At this time, the matching cavity 22 is located at one end of the motor installation cavity 21 and is mutually communicated, so that the output shaft of the subsequent motor 1 can extend into the matching cavity 22, meanwhile, the motor 1 is installed in the motor installation cavity 21, and the output shaft of the motor 1 extends into the matching cavity 22, so that the installation of the motor 1 in the shell 2 is realized, and conditions are provided for the subsequent motor 1 to drive the screw 3 to rotate. In addition, the screw 3 is disposed in the mating cavity 22, that is, a space for installation and movement is provided for the screw 3 by the mating cavity 22, and the screw 3 is coaxially installed on the output shaft and rotates along with the output shaft, so that the motor 1 can drive the screw 3 to rotate in the mating cavity 22. In addition, the sliding cavity 23 is arranged on one side of the matching cavity 22 and is arranged along the axial direction parallel to the screw 3, so that the arrangement direction of the sliding cavity 23 is the axial direction of the screw 3, and conditions are provided for the subsequent reciprocating movement of the sliding block 5 along the axial direction of the screw 3. And, the sliding cavity 23 is communicated with the matching cavity 22, so that conditions are provided for the follow-up screw 3 to drive the sliding block 5 to move in the sliding cavity 23 through the transmission rod 4. In addition, the sliding cavity 23 is provided with a sliding block 5 in a sliding manner, and one end of the sliding block 5 extends out of the shell 2 and is connected with the bolt shifting assembly, namely, when the sliding block 5 moves, the bolt shifting assembly can be pushed to act, so that unlocking is realized. In addition, the transmission rod 4 is arranged along the radial direction of the screw rod 3, one end of the transmission rod 4 is connected to the sliding block 5, namely, the transmission rod 4 can drive the sliding block 5 to move, meanwhile, the other end of the transmission rod 4 stretches into the matching cavity 22 and is clamped into a thread tooth slot on the screw rod 3, namely, when the electric driving screw rod 3 rotates, the screw rod 3 pushes the transmission rod 4 to reciprocate along the axial direction of the transmission rod through the thread tooth on the screw rod 3, so that the sliding block 5 is driven to reciprocate along the axial direction of the screw rod 3 in the sliding cavity 23, and the control of a lock tongue stirring assembly is realized. In addition, because the screw thread at the two ends of the screw rod 3 can disappear, when the transmission rod 4 moves to the two ends of the screw rod 3, if the screw rod 3 continues to rotate, the transmission rod 4 can deviate from the screw thread tooth grooves of the screw rod 3, so that the transmission rod 4 is separated from the screw rod 3, the rotation of the motor 1 is not limited by the transmission rod 4 any more, the idle running requirement of the motor 1 is met, the transmission rod 4 can deviate from the screw thread tooth grooves at the two ends of the screw rod 3 still through the deformation of the transmission rod 4 after the bolt poking assembly is blocked due to faults, and the normal rotation of the motor 1 is maintained, so that the problem that the motor 1 is overloaded and burnt out is avoided.

Specifically, reset assembly 6 still is provided with in casing 2, this moment, set up reset assembly 6 in cooperation intracavity 22, and, set up reset assembly 6 in one side that screw rod 3 deviates from slider 5, and reset assembly 6 is connected with the one end that drive rod 4 deviates from connecting slider 5, make at the position of drive rod 4 and screw rod 3 complex be located between slider 5 and reset assembly 6, can maintain the balance of drive rod 4 both ends atress, also can make follow-up drive rod 4 deviate from the screw thread tooth groove from the tip of screw rod 3 simultaneously after, after motor 1 reverses, can reverse promotion drive rod 4 get into the screw thread tooth groove of screw rod 3, provide the condition for the cooperation again of drive rod 4 and screw rod 3.

FIG. 4 is a block diagram of a reset device according to a preferred embodiment of the present utility model. As shown in fig. 1, 3 and 4, the reset assembly 6 further includes two expansion springs 61, at this time, the two expansion springs 61 are arranged in an end-to-end manner, that is, the two expansion springs 61 are located on the same axis, the ends of the two expansion springs 61 are abutted against each other, the two expansion springs 61 deviate from each other, and one end of each expansion spring is abutted against two side walls of the corresponding cavity 22, and meanwhile, the two expansion springs 61 are arranged along the axial direction of the screw rod 3, so that the expansion direction of the expansion springs 61 is consistent with the moving direction of the driving rod 4, and meanwhile, one end of the driving rod 4 matched with the screw rod 3 extends between the two expansion springs 61, that is, when the driving rod 4 moves towards one side, the driving rod 4 can compress the expansion springs 61 in the same direction, so that conditions are provided for the compressed expansion springs 61 to push the driving rod 4 to reset.

More specifically, the reset assembly 6 includes the guide rail 62 and the guide block 63 in addition to the two telescopic springs 61, at this time, the guide rail 62 is arranged along the axial direction of the screw 3, both ends of the guide rail 62 are all installed on the side wall of the matching cavity 22 of the housing 2, so that the installation of the guide rail 62 on the housing 2 is realized, and meanwhile, the guide rail 62 is sleeved with the two guide blocks 63, so that the two slide blocks 5 can move along the axial direction of the guide rail 62, that is, the moving direction of the two guide blocks 63 is consistent with the moving direction of the transmission rod 4. And, one side that two guide blocks 63 are in opposite directions all is provided with a telescopic spring 61, and two telescopic springs 61 support respectively in two guide blocks 63 promptly, and the telescopic spring 61 that corresponds can be compressed when the guide block 63 removes promptly to, extend the transfer line 4 to the one end between two telescopic springs 61 stretch into between two guide blocks 63 promptly when transfer line 4 removes, transfer line 4 can compress the telescopic spring 61 that corresponds through the guide block 63 of corresponding side promptly, can satisfy transfer line 4 and remove and reset the demand, can be for the removal direction of transfer line 4 again, stability when having improved transfer line 4 and removed, structural design is more reasonable.

More specifically, the transmission rods 4 for being matched with the screw rods 3 are arranged two, at this time, the two transmission rods 4 are respectively arranged on two sides of the screw rods 3, namely, the two transmission rods 4 clamp the screw rods 3 between the two transmission rods, so that the stress on two sides of the screw rods 3 is uniform, meanwhile, the reliability of the matching of the transmission rods 4 and the screw rods 3 is ensured, the problem that the transmission rods 4 are separated from the screw rods 3 in the radial direction of the screw rods 3 is solved, and the structural design is more reasonable.

More specifically, two transmission rods 4 are formed at two ends of the elastic rod piece after the middle part of the elastic rod piece is reversely bent, so that the two transmission rods 4 are formed after the elastic rod piece is bent, the integrity is better, the processing is more convenient, meanwhile, the stability of the distance between the two transmission rods 4 is also maintained, and the transmission reliability is higher.

In addition, this embodiment also provides another kind of transfer line structure, at this moment, transfer line 4 is the slice and arranges to, first trepanning has been seted up at the middle part of transfer line 4, the second trepanning has been seted up in the one end of transfer line 4, during the installation, the first trepanning on the transfer line 4 is located on the screw rod 3 and is blocked into the screw tooth inslot, the second trepanning cover is located on the guide rail 62 and is located between two guide blocks 63, can satisfy the user demand that the screw rod 3 promotes the transfer line 4 and remove equally, also can satisfy the user demand that transfer line 4 promotes the guide block 63 to remove simultaneously. It should be noted that, the screw 3 and the first sleeve hole can be assembled by referring to the way of screwing the screw into the nut, and the first sleeve hole can be regarded as a single thread structure, so that the use requirement of quick assembly and disassembly is met.

More specifically, the transmission rod 4 is made of spring steel, has certain elasticity, adapts to the use condition that the transmission rod is deformed under the overload condition to be separated from the end part of the screw rod 3, has good toughness, can smoothly push the sliding block 5 and the guide block 63 to move under the normal condition, and has more reasonable structural design.

More specifically, still offered spacing groove 24 on casing 2 and lie in the chamber bottom of sliding chamber 23, at this moment, spacing groove 24 is arranged along the direction of movement of slider 5 and is located the one end that slider 5 stretches out, spacing groove 24 has predetermined length, simultaneously, be provided with outstanding stopper on slider 5, and when slider 5 installs in sliding chamber 23, the stopper slides and locates in spacing groove 24, can be through the slip of stopper in spacing groove 24 for the removal direction of slider 5 in sliding chamber 23, can also realize spacing through the tip of stopper jack-up spacing groove 24 after slider 5 moves in place, prevent slider 5 excessive movement and cause the problem of structural damage, the security is higher.

More specifically, a plurality of shock pads 26 are arranged at the bottom of the motor installation cavity 21 on the shell 2, and at this time, the shock pads 26 are arranged at intervals, so that the scattered arrangement of the shock pads 26 in the motor installation cavity 21 is realized, and conditions are provided for realizing the shock absorption of the motor 1 in all directions. Simultaneously, motor installation cavity 21 is interior and be located a plurality of limiting plates 25 on the both sides lateral wall, and, the lower extreme of limiting plate 25 is connected with the chamber end of motor installation cavity 21, not only strengthened the structural strength of casing 2, can also paste in each shock pad 26 when motor 1 installs in motor installation cavity 21, and the shell of motor 1, and block between the limiting plate 25 of both sides, limit up motor 1 through limiting plate 25, ensure that motor 1 can stably install in motor installation cavity 21, and can realize the shock attenuation, the performance of tool to lock has been promoted.

The lock clutch for preventing motor overload comprises a shell 2, a screw 3, a transmission rod 4 and a sliding block 5; the screw 3 is coaxially arranged on the output shaft of the motor 1, the sliding block 5 is arranged to be matched with the bolt shifting assembly, the transmission rod 4 is arranged along the radial direction of the screw 3, one end of the transmission rod 4 is clamped into the threaded tooth groove, the other end of the transmission rod 4 is connected with the sliding block 5, when the motor 1 drives the screw 3 to rotate, the screw 3 pushes the transmission rod 4 to reciprocate along the axial direction of the screw 3 through the threaded teeth on the screw 3, the sliding block 5 is driven to push the bolt shifting assembly to act, unlocking is achieved, and the transmission rod 4 can be prevented from being pushed by the screw 3 continuously through the separation of the transmission rod 4 from the threads at the two ends of the screw 3, so that when the shifting assembly fails and cannot act, the transmission rod 4 can not continuously limit the rotation of the motor 1, the normal rotation of the motor 1 is guaranteed, the overload and burnout problem of the motor 1 is avoided, the structure is simple, the assembly is convenient, the subsequent overhaul is facilitated, the manufacturing and the overhaul cost and the market expansion are reduced.

The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included in the scope of the present utility model.

Claims (10)

1. The utility model provides a prevent motor overload's tool to lock clutch, is applicable to the tool to lock that the subassembly was stirred to the area spring bolt, set up in between spring bolt stirring subassembly and the motor, its characterized in that includes: the novel sliding type electric screw comprises a shell, a screw rod, a transmission rod and a sliding block, wherein a motor installation cavity, a matching cavity and a sliding cavity are formed in the shell, the matching cavity is located at one end of the motor installation cavity and is mutually communicated, the motor is installed in the motor installation cavity, an output shaft extends to the matching cavity, the screw rod is arranged in the matching cavity and is coaxially installed on the output shaft and rotates along with the output shaft, the sliding cavity is arranged at one side of the matching cavity and is parallel to the axial arrangement of the screw rod, the sliding cavity is communicated with the matching cavity, the sliding cavity is internally provided with the sliding block in a sliding mode, one end of the sliding block extends out of the shell and is connected with a bolt stirring assembly, and the transmission rod is radially arranged along the screw rod and is connected with the sliding block at one end of the transmission rod, and the other end of the transmission rod extends into the matching cavity and is clamped into a thread tooth socket on the screw rod.

2. The motor overload prevention lock clutch of claim 1, further comprising a reset assembly disposed in the mating cavity, and disposed on a side of the screw opposite the slider, the reset assembly being connected to an end of the drive rod opposite the slider.

3. The motor overload prevention lock clutch of claim 2 wherein the reset assembly comprises two extension springs, the two extension springs being arranged end-to-end and each being arranged axially along the screw, and wherein an end of the drive rod engaged with the screw extends between the two extension springs.

4. The motor overload prevention lock clutch according to claim 3, wherein the reset assembly further comprises a guide rail and guide blocks, the guide rail is arranged along the axial direction of the screw rod, both ends of the guide rail are mounted on the shell, simultaneously, two guide blocks are sleeved on the guide rail, one side of each guide block, which is opposite to the other side, is provided with one telescopic spring, and one end of the transmission rod, which extends to the position between the two telescopic springs, extends to the position between the two guide blocks.

5. The motor overload prevention lock clutch as claimed in claim 4, wherein two transmission rods are provided, and the two transmission rods are respectively arranged at two sides of the screw rod.

6. The motor overload prevention lock clutch as claimed in claim 5, wherein two ends of an elastic rod member after being reversely bent are respectively formed with two transmission rods.

7. The motor overload prevention lock clutch according to claim 4, wherein the transmission rod is sheet-shaped, a first sleeve hole is formed in the middle of the transmission rod, a second sleeve hole is formed in one end of the transmission rod, the first sleeve hole is sleeved on the screw rod and is clamped into the threaded tooth slot, and the second sleeve hole is sleeved on the guide rail and is positioned between the two guide blocks.

8. The motor overload prevention lock clutch of claim 1, wherein the drive rod is spring steel.

9. The lock clutch for preventing overload of a motor according to claim 1, wherein a limiting groove is formed in the housing and located at the bottom of the sliding cavity, the limiting groove is arranged along the moving direction of the sliding block and located at one end of the sliding block extending out, a protruding limiting block is arranged on the sliding block, and the limiting block is slidably arranged in the limiting groove when the sliding block is installed in the sliding cavity.

10. The lock clutch for preventing motor overload according to claim 1, wherein a plurality of shock pads are arranged at the bottom of the motor installation cavity on the shell, a plurality of shock pads are arranged at intervals, meanwhile, a plurality of limiting plates are arranged in the motor installation cavity and on the side walls of the two sides, the lower ends of the limiting plates are connected with the bottom of the motor installation cavity, and when the motor is installed in the motor installation cavity, the shell of the motor is tightly attached to each shock pad and clamped between the limiting plates of the two sides.