Self-locking structure of push rod motor

Abstract

The utility model discloses a push rod motor self-locking structure, and belongs to the technical field of push rod motors. The device mainly comprises a housing; the cylinder body is mounted at the upper end of the housing; a transmission mechanism mounted inside the housing, the transmission mechanism having a turbine: a lead screw mounted inside the turbine; the self-locking mechanism is installed at the end, close to the housing, of the cylinder body, and the self-locking mechanism comprises a pawl installed on the cylinder body; the locking ratchet wheel is mounted on the lead screw; and the reset spring is fixedly connected with the pawl. According to the push rod motor self-locking structure, by arranging the self-locking mechanism, the push rod motor is prevented from descending or moving an operating bed or a traction bed in an emergency, and therefore the effect that accidents are avoided in the reoperation or treatment process is achieved.

Description

Technical Field

[0001] This application relates to the technical field of push rod motors, specifically to a self-locking structure of a push rod motor. Background Art

[0002] In medical equipment, any minor position change may have an adverse impact on patients. For example, in operating tables, traction beds, etc., a high degree of stability and safety is required to ensure the comfort and safety of patients during treatment or examination.

[0003] Push rod motors can precisely adjust the height, angle, and tilt of operating tables or traction beds to meet the needs of different surgeries or treatments. This precise adjustment ability is crucial for ensuring the smooth progress of surgical or treatment procedures.

[0004] However, during actual use, emergencies such as sudden power outages or equipment failures may occur. At this time, the push rod motor may suddenly lose power, causing the operating table or traction bed to descend or move, which may lead to accidents during the surgical or treatment process.

[0005] Therefore, it is necessary to provide a self-locking structure for the push rod motor to solve the above problems.

[0006] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application, and therefore, it may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a self-locking structure for a push rod motor, which solves the problem that in case of an emergency, the push rod motor may suddenly lose power, causing the operating table or traction bed to descend or move, and thus leading to accidents during the surgical or treatment process.

[0008] The technical solution adopted by this application to solve its technical problems is: a self-locking structure of a push rod motor, including:

[0009] A housing;

[0010] A cylinder body, which is installed at the upper end of the housing;

[0011] A transmission mechanism, which is installed inside the housing. The transmission mechanism is used to provide a power source for the whole, and the transmission mechanism has a turbine:

[0012] A lead screw, which is installed inside the turbine;

[0013] A self-locking mechanism, which is installed at one end of the cylinder body close to the housing). The self-locking mechanism is used to prevent the lead screw from rotating, thereby maintaining a stable position, and the self-locking mechanism includes:

[0014] A pawl, which is installed on the cylinder body;

[0015] A locking ratchet, which is installed on the lead screw;

[0016] A return spring, which is fixedly connected to the pawl.

[0017] Furthermore, the transmission mechanism includes a motor fixedly arranged at one end of the housing. The output end of the motor penetrates through the housing and is fixedly connected with a worm, and the turbine meshes with the worm.

[0018] Furthermore, a bearing is fixedly arranged at the connection between the lead screw and the housing. A slider is slidably arranged inside the cylinder body. The slider is in transmission connection with the lead screw, and a push rod is arranged on the slider.

[0019] Furthermore, a blocking ring is fixedly arranged on the cylinder body.

[0020] Furthermore, an installation ring is fixedly arranged at one end of the cylinder body close to the housing. The installation ring is fixedly provided with a connecting rod. The pawl is divided into a pressing end and a clamping end. The clamping end is located inside the cylinder body, and the pressing end penetrates through the cylinder body and extends to the outside. The locking ratchet has multiple sets of tooth grooves, and the tooth grooves cooperate with the clamping end of the pawl. A fixing rod is fixedly arranged on the installation ring at a position close to the pawl.

[0021] The beneficial effect of this application is that the self-locking structure of the push rod motor provided by this application, by setting a self-locking mechanism, achieves the effect of preventing the push rod motor from descending or moving the operating bed or traction bed in case of emergency, thereby avoiding accidents during the operation or treatment process.

[0022] In addition to the purposes, features and advantages described above, this application has other purposes, features and advantages. The following will refer to the drawings to further elaborate on this application in detail. Description of the Drawings

[0023] The specification drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application.

[0024] In the drawings:

[0025] Figure 1 is the overall schematic diagram of the self-locking structure of the push rod motor in this application;

[0026] Figure 2 is [[ID=4,2]] Figure 1 the schematic diagram of the push rod motor in

[0027] Figure 3For Figure 1 Partial schematic diagram of the push rod motor;

[0028] Figure 4 For Figure 2 Schematic diagram of the self-locking mechanism;

[0029] Among them, each reference numeral in the figure:

[0030] 1. Push rod motor; 2. Cylinder body; 3. Self-locking mechanism; 4. Motor; 6. Housing; 7. Worm; 8. Slide block; 9. Blocking ring; 10. Thrust rod; 11. Lead screw; 12. Turbine; 31. Pawl; 32. Fixed ring; 33. Locking ratchet; 34. Mounting ring; 35. Return spring; 36. Fixed rod. Specific implementation manners

[0031] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.

[0032] In order to enable those skilled in the art to better understand the solution of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0033] As Figure 1 - Figure 2 shown, the present application provides a self-locking structure for a push rod motor, including a push rod motor 1, and the push rod motor 1 is used to push a medical device to perform lifting motion;

[0034] The push rod motor 1 includes a cylinder body 2, and the interior of the cylinder body 2 is hollow, so as to provide a stable operating environment for other internal components. At the same time, a housing 6 is fixedly arranged at one end of the cylinder body 2, and the housing 6 is used to protect the internal mechanical components and prevent dust, impurities, etc. from entering and affecting the normal operation of the device;

[0035] A transmission mechanism is fixedly arranged at one end of the housing 6, and the transmission mechanism is used to provide a stable power source for the whole;

[0036] The transmission mechanism includes a motor 4 fixedly arranged at one end of the housing 6, and the motor 4 provides a power source for the whole. And the output end of the motor 4 penetrates through the housing 6 and enters the interior of the housing 6. At the same time, the output end of the motor 4 is fixedly connected with a worm 7, and the worm 7 is used to transmit the power of the motor 4 so as to drive other components;

[0037] Meanwhile, a turbine 12 is rotatably arranged inside the housing 6, and the turbine 12 meshes with the worm 7, so that the motor 4 can drive the worm 7 to drive the turbine 12 to move;

[0038] A lead screw 11 is fixedly arranged inside the turbine 12. At the same time, the lead screw 11 penetrates through the housing 6 and extends into the cylinder body 2, and a bearing is fixedly arranged at the connection between the lead screw 11 and the housing 6, so that the turbine 12 drives the lead screw 11 to move on the housing 6;

[0039] And a slider 8 is slidably arranged inside the cylinder body 2. The slider 8 is in transmission connection with the lead screw 11. Thus, the lead screw 11 can drive the slider 8 to perform precise linear motion along the inside of the cylinder body 2, and then drive the push rod motor 1 to perform linear motion;

[0040] And a push rod 10 is fixedly arranged on the slider 8. The push rod 10 is connected to the medical device. When the slider 8 performs linear motion along the inside of the cylinder body 2, it can drive the push rod 10 to slide inside the cylinder body 2, so as to drive the medical device to rise or fall;

[0041] Meanwhile, a blocking ring 9 is fixedly arranged at the inner position of the cylinder body 2 close to the push rod 10. The blocking ring 9 is used to limit the moving range of the push rod 10 or prevent it from deviating from its proper position;

[0042] Figure 1 and Figure 3 - Figure 4 As shown, a self-locking mechanism 3 is fixedly arranged at one end of the cylinder body 2 close to the housing 6. The self-locking mechanism 3 is used to prevent the lead screw 11 from rotating, so as to keep the position of the push rod 10 stable;

[0043] The self-locking mechanism 3 includes a mounting ring 34 fixedly arranged at one end of the cylinder body 2 close to the housing 6. At the same time, a connecting rod (not marked in the figure) is fixedly arranged on the mounting ring 34, and a pawl 31 is rotatably arranged on the connecting rod;

[0044] Among them, the pawl 31 is divided into a pressing end and a clamping end. The clamping end is located inside the cylinder body 2 and is used to prevent the lead screw 11 from rotating, so as to perform self-locking operation. The pressing end penetrates through the cylinder body 2 and extends to the outside, so that the self-locking operation can be released when a descending operation is required;

[0045] At the same time, a fixing ring 32 is fixedly arranged at one end of the lead screw 11 close to the turbine 12. A locking ratchet 33 is fixedly arranged on the outside of the fixing ring 32. The locking ratchet 33 has multiple groups of tooth grooves, and these tooth grooves cooperate with the clamping end of the pawl 31, so that the pawl 31 can clamp the locking ratchet 33, so that the lead screw 11 cannot rotate in the reverse direction;

[0046] It should be noted that when the motor 4 drives the worm 7 to drive the lead screw 11 to rotate through the turbine 12, the locking ratchet 33 is fixedly connected to the lead screw 11 through the fixing ring 32 and thus rotates therewith;

[0047] At the same time, the pawl 31 is located at the side position of the locking ratchet 33 and the clamping end is inserted into the tooth groove of the locking ratchet 33 for locking. When the locking ratchet 33 moves along with the lead screw 11, it will push the pawl 31 upward to move, preventing the pawl 31 from affecting the ascending operation of the push rod motor 1;

[0048] And a fixing rod 36 is fixedly arranged at a position on the mounting ring 34 close to the pawl 31. A return spring 35 is fixedly arranged on the fixing rod 36, and the return spring 35 is fixedly connected to the clamping end of the pawl 31 at the same time. When the locking ratchet 33 moves along with the lead screw 11, it will push the pawl 31 upward. At this time, the return spring 35 will be compressed as the pawl 31 is lifted. When the locking ratchet 33 no longer applies an upward force to the pawl 31, at this time, the return spring 35 releases the compressed force and pushes the pawl 31 into the tooth groove of the locking ratchet 33 for locking operation;

[0049] When the push rod motor 1 needs to descend, the staff can press the pressing end of the pawl 31, thereby clamping the pawl 31 into the clamping end of the locking ratchet 33 to lift it. When the clamping end leaves the inside of the tooth groove of the locking ratchet 33, the descending operation of the push rod motor 1 can be carried out;

[0050] However, when an emergency occurs and causes the device to suddenly lose power and the motor 4 stops running, at this time, the slider 8 may drive the ejector rod 10 to slide along the lead screw 11, thereby reversely driving the lead screw 11 to rotate. At this time, the clamping end of the pawl 31 will be clamped into the locking ratchet 33 to prevent the lead screw 11 from rotating reversely and prevent the ejector rod 10 from suddenly falling, thereby affecting the surgical or treatment process.

[0051] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. Push rod motor self-locking structure, characterized in that: including, a housing (6); a cylinder body (2), which is installed at the upper end of the housing (6); a transmission mechanism, which is installed inside the housing (6), the transmission mechanism is used to provide a power source for the whole, and the transmission mechanism has a turbine (12): a lead screw (11), which is installed inside the turbine (12); a self-locking mechanism (3), which is installed at one end of the cylinder body (2) close to the housing (6), the self-locking mechanism (3) is used to prevent the lead screw (11) from rotating so as to maintain a stable position, and the self-locking mechanism (3) includes: a pawl (31), which is installed on the cylinder body (2); a locking ratchet wheel (33), which is installed on the lead screw (11); a return spring (35), which is fixedly connected to the pawl (31).

2. The self-locking structure of the push rod motor according to claim 1, characterized in that: The transmission mechanism includes a motor (4) fixedly arranged at one end of the housing (6), the output end of the motor (4) penetrates through the housing (6) and is fixedly connected with a worm (7), and the turbine (12) meshes with the worm (7).

3. The self-locking structure of the push rod motor according to claim 1, wherein: A bearing is fixedly arranged at the connection position between the lead screw (11) and the housing (6), a slider (8) is slidably arranged inside the cylinder body (2), the slider (8) is in transmission connection with the lead screw (11), and a push rod (10) is arranged on the slider (8).

4. The self-locking structure of the push rod motor according to claim 1, wherein: A blocking ring (9) is fixedly arranged on the cylinder body (2).

5. The self-locking structure of the push rod motor according to claim 1, characterized in that: An installation ring (34) is fixedly arranged at one end of the cylinder body (2) close to the housing (6), a connecting rod is fixedly arranged on the installation ring (34), the pawl (31) is divided into a pressing end and a clamping end, the clamping end is located inside the cylinder body (2), the pressing end penetrates through the cylinder body (2) and extends to the outside, the locking ratchet wheel (33) has a plurality of tooth grooves, the tooth grooves cooperate with the clamping end of the pawl (31), and a fixing rod (36) is fixedly arranged at a position on the installation ring (34) close to the pawl (31).

Images