Unlocking motor cam with anti-drop connection structure

Abstract

The utility model discloses an unlocking motor cam with an anti-disengaging connecting structure, and relates to the technical field of railway vehicles, the unlocking motor cam comprises a cam main body, an unlocking motor shaft mounting through hole is formed in the cam main body, and a cam duckbilled structure is arranged on one side of the cam main body; the surface, close to the cam body, of the duckbilled short edge of the cam duckbilled structure is marked as a duckbilled short edge first surface, and the surface, away from the cam body, of the duckbilled short edge of the cam duckbilled structure is marked as a duckbilled short edge second surface. The distance between the intersection point of the plane extension face of the duckbilled short edge first surface and the plane extension face of the duckbilled short edge second surface and the end of the duckbilled short edge second surface is 3 mm. Through the specific duckbilled structural design, the clamping force of the cam completely acts on the motor shaft, and the hidden danger that the cam slides downwards and falls off under the working conditions of gravity and vibration is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of rail vehicles, and in particular to an unlocking motor cam with an anti-detachment connection structure. Background Art

[0002] With the development of society, rail vehicles have gradually become one of the primary means of transportation for people, resulting in continuous innovation and development in rail vehicle design technology. The EMU sliding door unlocking motor cam has been equipped with a release mechanism to prevent it from becoming loose, preventing the sliding door from being unlocked and opening, which could disrupt the train's operational order.

[0003] In order to solve this problem, the existing solutions usually fix the cam to the unlocking motor shaft by bolts. One solution is that the camshaft hole is circular, and the cam is clamped to the motor shaft by screws. Since the camshaft hole and the motor shaft are both circular, relative rotation occurs between the cam and the motor shaft after long-term operation, resulting in failure of the unlocking function. The second solution is that the camshaft hole is semicircular (the working surface of the motor shaft is also semicircular), and the cam is clamped to the motor shaft by screws. Since the cam hole and the working surface of the motor shaft are both semicircular, the phenomenon of relative rotation between the cam hole and the motor shaft after long-term operation is effectively avoided. However, this connection structure has two hidden dangers. First, the cam slides downward under gravity and vibration conditions, causing the cam and the latch roller to be misaligned, and the Sierra door cannot be unlocked and opened; second, the cam duckbill is too long. After the screws are tightened, the duckbill resists, and the clamping force cannot be fully applied to the motor shaft, resulting in the Sierra door being unable to unlock and open, affecting the operation order of the train set.

[0004] Therefore, in order to meet actual needs, an unlocking motor cam with an anti-detachment connection structure is provided. Summary of the Invention

[0005] In response to the defects existing in the prior art, the purpose of this application is to provide an unlocking motor cam with an anti-detachment connection structure. Through the specific duckbill structure design, the cam clamping force acts completely on the motor shaft, avoiding the hidden danger of the cam sliding downward and falling off under gravity and vibration conditions.

[0006] In order to achieve the above objectives, the technical solution adopted by this application is:

[0007] In a first aspect, the present application provides an unlocking motor cam with an anti-detachment connection structure, wherein the unlocking motor cam with an anti-detachment connection structure comprises:

[0008] A cam body, wherein an unlocking motor shaft mounting through hole is provided in the cam body, and a cam duckbill structure is provided on one side of the cam body; wherein,

[0009] The surface of the short side of the duckbill of the cam duckbill structure close to the cam body is recorded as the first surface of the short side of the duckbill, and the surface of the short side of the duckbill of the cam duckbill structure away from the cam body is recorded as the second surface of the short side of the duckbill;

[0010] The distance between the intersection of the plane extension surface of the first surface of the short side of the duckbill and the plane extension surface of the second surface of the short side of the duckbill and the end of the second surface of the short side of the duckbill is 3 mm.

[0011] On the basis of the above technical solution, a duckbill short side screw hole is provided on the short side of the duckbill.

[0012] On the basis of the above technical solution, the unlocking motor cam with the anti-detachment connection structure further includes:

[0013] A secondary anti-slip structure for being installed in the unlocking motor shaft mounting through hole and mated with the unlocking motor shaft of the unlocking motor;

[0014] The secondary anti-slip structure and the unlocking motor shaft are respectively extended into the unlocking motor shaft mounting through hole from both ends of the unlocking motor shaft mounting through hole for matching;

[0015] The secondary anti-slip structure comprises:

[0016] First screw;

[0017] a spring washer and a first washer sequentially sleeved on the first screw;

[0018] The first gasket is provided with a gasket boss.

[0019] On the basis of the above technical solution, the first screw is connected to the unlocking motor shaft by a threaded connection.

[0020] In a second aspect, the present application provides another unlocking motor cam with an anti-detachment connection structure, wherein the unlocking motor cam with an anti-detachment connection structure comprises:

[0021] A cam body, wherein an unlocking motor shaft mounting through hole is provided in the cam body, and a cam duckbill structure is provided on one side of the cam body; wherein,

[0022] The short side of the duckbill of the cam duckbill structure is shortened by 3 mm.

[0023] On the basis of the above technical solution, a duckbill short side screw hole is provided on the short side of the duckbill.

[0024] On the basis of the above technical solution, the unlocking motor cam with the anti-detachment connection structure further includes:

[0025] A secondary anti-slip structure for being installed in the unlocking motor shaft mounting through hole and mated with the unlocking motor shaft of the unlocking motor;

[0026] The secondary anti-slip structure and the unlocking motor shaft are respectively extended into the unlocking motor shaft mounting through hole from both ends of the unlocking motor shaft mounting through hole for matching;

[0027] The secondary anti-slip structure comprises:

[0028] First screw;

[0029] a spring washer and a first washer sequentially sleeved on the first screw;

[0030] The first gasket is provided with a gasket boss.

[0031] On the basis of the above technical solution, the first screw is connected to the unlocking motor shaft by a threaded connection.

[0032] Compared with the prior art, the advantages of this application are:

[0033] This application uses a specific duckbill structure design to ensure that the cam clamping force acts completely on the motor shaft, avoiding the hidden danger of the cam sliding downward and falling off under gravity and vibration conditions; a secondary anti-slip structure is added to the front end of the unlocking motor shaft to improve the reliability of the cam connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 This is a structural schematic diagram of a cam body in an unlocking motor cam with an anti-detachment connection structure according to an embodiment of the present application;

[0036] Figure 2 A side view of a cam body in an unlocking motor cam with an anti-detachment connection structure according to an embodiment of the present application;

[0037] Figure 3 Schematic diagram of the assembly structure of the cam body, the secondary anti-slip structure and the unlocking motor shaft in the unlocking motor cam with an anti-slip connection structure according to an embodiment of the present application;

[0038] Figure 4 This is a structural diagram of a secondary anti-slip structure in an unlocking motor cam with an anti-slip connection structure according to an embodiment of the present application;

[0039] In the picture:

[0040] 1. Cam body; 10. Unlocking motor shaft mounting through hole; 11. Cam duckbill structure; 12. Short side of duckbill; 120. Screw hole on short side of duckbill; 13. First surface of short side of duckbill; 14. Second surface of short side of duckbill; 2. Secondary anti-slip structure; 20. First screw; 21. Spring washer; 22. First washer; 220. Washer boss; A. Unlocking motor shaft. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0043] An embodiment of the present application provides an unlocking motor cam with an anti-detachment connection structure. Through a specific duckbill structure design, the cam clamping force acts completely on the motor shaft, avoiding the hidden danger of the cam sliding downward and falling off under gravity and vibration conditions; a secondary anti-detachment structure is added to the front end of the unlocking motor shaft to improve the reliability of the cam connection.

[0044] To achieve the above technical effects, the overall idea of ​​this application is as follows:

[0045] An unlocking motor cam with an anti-slip connection structure, the unlocking motor cam comprising:

[0046] The cam body 1 has an unlocking motor shaft mounting through hole 10 provided therein, and a cam duckbill structure 11 provided on one side of the cam body 1; wherein,

[0047] The surface of the duckbill short side 12 of the cam duckbill structure 11 close to the cam body 1 is recorded as the duckbill short side first surface 13, and the surface of the duckbill short side 12 of the cam duckbill structure 11 away from the cam body 1 is recorded as the duckbill short side second surface 14;

[0048] The distance between the intersection of the plane extension surface of the first surface 13 of the short side of the duckbill and the plane extension surface of the second surface 14 of the short side of the duckbill and the end of the second surface 14 of the short side of the duckbill is 3 mm.

[0049] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0050] First, see Figures 1 to 4As shown, the present application provides an unlocking motor cam with an anti-detachment connection structure, the unlocking motor cam comprising:

[0051] The cam body 1 has an unlocking motor shaft mounting through hole 10 provided therein, and a cam duckbill structure 11 provided on one side of the cam body 1; wherein,

[0052] The surface of the duckbill short side 12 of the cam duckbill structure 11 close to the cam body 1 is recorded as the duckbill short side first surface 13, and the surface of the duckbill short side 12 of the cam duckbill structure 11 away from the cam body 1 is recorded as the duckbill short side second surface 14;

[0053] The distance between the intersection of the plane extension surface of the first surface 13 of the short side of the duckbill and the plane extension surface of the second surface 14 of the short side of the duckbill and the end of the second surface 14 of the short side of the duckbill is 3 mm.

[0054] In the embodiment of the present application, a specific duckbill structure is designed to enable the cam clamping force to act completely on the motor shaft, avoiding the hidden danger of the cam sliding downward and falling off under gravity and vibration conditions; a secondary anti-slip structure is added to the front end of the unlocking motor shaft to improve the reliability of the cam connection.

[0055] Furthermore, a duckbill short side screw hole 120 is provided on the duckbill short side 12 .

[0056] Furthermore, the unlocking motor cam further comprises:

[0057] A secondary anti-slip structure 2 for being installed in the unlocking motor shaft mounting through hole 10 and mating with the unlocking motor shaft of the unlocking motor;

[0058] The secondary anti-slip structure 2 and the unlocking motor shaft are respectively extended into the unlocking motor shaft mounting through hole 10 from both ends of the unlocking motor shaft mounting through hole 10 for matching;

[0059] The secondary anti-slip structure 2 includes:

[0060] a first screw 20;

[0061] A spring washer 21 and a first washer 22 are sequentially sleeved on the first screw 20;

[0062] The first gasket 22 is provided with a gasket boss 220 .

[0063] Furthermore, the first screw 20 is coupled to the unlocking motor shaft via a threaded connection.

[0064] Based on the technical solution of the embodiment of this application, the key points in the specific implementation are as follows:

[0065] The short side 12 of the duckbill of the cam duckbill structure 11 is shortened by 3 mm to avoid the cam duckbill structure 11 from resisting after the screw is tightened, ensuring that the cam clamping force acts completely on the unlocking motor shaft, and avoiding the problem that the cam body 1 has insufficient clamping force on the unlocking motor shaft, and the cam body 1 slides downward and falls off under gravity and vibration conditions.

[0066] In addition, an M4 threaded hole is added to the front end of the unlocking motor shaft, thereby cooperating with the secondary anti-slip structure 2 to add a secondary anti-slip measure to the cam body 1;

[0067] Even if the clamping force of the cam body 1 on the motor shaft fails and slides down, the unlocking cam body 1 will not fall off, ensuring the normal unlocking function and further reducing the probability of the cam body 1 loosening.

[0068] If necessary, the first gasket 22 is provided with a gasket boss 220 to avoid direct contact between the first gasket 22 and the cam body 1 , so as to prevent the screw from being loosened due to the rotation of the cam body 1 .

[0069] Second, see Figures 1 to 4 As shown, the present application provides an unlocking motor cam with an anti-detachment connection structure, the unlocking motor cam comprising:

[0070] The cam body 1 has an unlocking motor shaft mounting through hole 10 provided therein, and a cam duckbill structure 11 provided on one side of the cam body 1; wherein,

[0071] The short side 12 of the duckbill of the cam duckbill structure 11 is shortened by 3 mm.

[0072] In the embodiment of the present application, a specific duckbill structure is designed to enable the cam clamping force to act completely on the motor shaft, avoiding the hidden danger of the cam sliding downward and falling off under gravity and vibration conditions; a secondary anti-slip structure is added to the front end of the unlocking motor shaft to improve the reliability of the cam connection.

[0073] Furthermore, a duckbill short side screw hole 120 is provided on the duckbill short side 12 .

[0074] Furthermore, the unlocking motor cam further includes:

[0075] A secondary anti-slip structure 2 for being installed in the unlocking motor shaft mounting through hole 10 and mating with the unlocking motor shaft of the unlocking motor;

[0076] The secondary anti-slip structure 2 and the unlocking motor shaft are respectively extended into the unlocking motor shaft mounting through hole 10 from both ends of the unlocking motor shaft mounting through hole 10 for matching;

[0077] The secondary anti-slip structure 2 includes:

[0078] a first screw 20;

[0079] A spring washer 21 and a first washer 22 are sequentially sleeved on the first screw 20;

[0080] The first gasket 22 is provided with a gasket boss 220 .

[0081] Furthermore, the first screw 20 is coupled to the unlocking motor shaft via a threaded connection.

[0082] It should be noted that the unlocking motor cam with an anti-detachment connection structure mentioned in the second aspect and the unlocking motor cam with an anti-detachment connection structure mentioned in the first aspect have similar technical problems, technical solutions and technical effects at the technical principle level, and will not be elaborated here.

[0083] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0084] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0085] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An unlocking motor cam with an anti-detachment connection structure, characterized in that: The unlocking motor cam with an anti-drop connection structure includes: A cam body (1), wherein an unlocking motor shaft mounting through hole (10) is provided in the cam body (1), and a cam duckbill structure (11) is provided on one side of the cam body (1); wherein, The surface of the duckbill short side (12) of the cam duckbill structure (11) close to the cam body (1) is recorded as the duckbill short side first surface (13), and the surface of the duckbill short side (12) of the cam duckbill structure (11) away from the cam body (1) is recorded as the duckbill short side second surface (14); The distance between the intersection of the plane extension surface of the first surface (13) of the short side of the duckbill and the plane extension surface of the second surface (14) of the short side of the duckbill and the end of the second surface (14) of the short side of the duckbill is 3 mm.

2. The unlocking motor cam with an anti-disengagement connection structure according to claim 1, characterized in that: The duckbill short side (12) is provided with a duckbill short side screw hole (120).

3. The unlocking motor cam with an anti-disconnection connection structure according to claim 1, characterized in that: The unlocking motor cam with the anti-drop connection structure further comprises: A secondary anti-slip structure (2) for being installed in the unlocking motor shaft installation through hole (10) and being matched with the unlocking motor shaft of the unlocking motor; The secondary anti-slip structure (2) and the unlocking motor shaft respectively extend into the unlocking motor shaft mounting through hole (10) from both ends of the unlocking motor shaft mounting through hole (10) for matching; The secondary anti-slip structure (2) comprises: a first screw (20); A spring washer (21) and a first washer (22) are sequentially sleeved on the first screw (20); The first gasket (22) is provided with a gasket boss (220).

4. The unlocking motor cam with an anti-disengagement connection structure according to claim 3, characterized in that: The first screw (20) is coupled to the unlocking motor shaft via a threaded connection.

5. An unlocking motor cam with an anti-detachment connection structure, characterized in that: The unlocking motor cam with an anti-drop connection structure includes: A cam body (1), wherein an unlocking motor shaft mounting through hole (10) is provided in the cam body (1), and a cam duckbill structure (11) is provided on one side of the cam body (1); wherein, The short side (12) of the duckbill of the cam duckbill structure (11) is shortened by 3 mm.

6. The unlocking motor cam with an anti-detachment connection structure according to claim 5, characterized in that: The duckbill short side (12) is provided with a duckbill short side screw hole (120).

7. The unlocking motor cam with an anti-detachment connection structure according to claim 5, characterized in that: The unlocking motor cam with the anti-drop connection structure further comprises: A secondary anti-slip structure (2) for being installed in the unlocking motor shaft installation through hole (10) and being matched with the unlocking motor shaft of the unlocking motor; The secondary anti-slip structure (2) and the unlocking motor shaft respectively extend into the unlocking motor shaft mounting through hole (10) from both ends of the unlocking motor shaft mounting through hole (10) for matching; The secondary anti-slip structure (2) comprises: a first screw (20); a spring washer (21) and a first washer (22) sequentially sleeved on the first screw (20); The first gasket (22) is provided with a gasket boss (220).

8. The unlocking motor cam with an anti-detachment connection structure according to claim 7, characterized in that: The first screw (20) is coupled to the unlocking motor shaft via a threaded connection.

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