One-way self-locking structure and motor assembly

Abstract

The utility model provides a one-way self-locking structure and a motor assembly. The one-way self-locking structure comprises a housing; the first assembly is arranged in the shell and comprises an inner ring which is arranged on the motor shaft in a sleeving manner and synchronously rotates along with the motor shaft; the outer ring is sleeved on the inner ring; one end of the retainer is embedded into the first groove, and the retainer is connected with the first groove to rotate; wherein the direction, facing the retainer, of the first fixing piece is a first direction, and otherwise, the direction is a second direction; when the motor rotates towards the first direction, the outer ring tends to rotate towards the first direction, and the other end of the retainer is in contact with the shell so as to abut against the outer ring, so that the motor shaft cannot rotate together with the outer ring; when the motor rotates in the second direction, the motor shaft drives the first assembly to rotate. The utility model solves the problem of how to solve the problem of excessive abrasion to the retainer when the motor shaft rotates reversely and the motor is self-locked.

Description

Technical Field

[0001] The utility model relates to the technical field of linear brake equipment, specifically, to a one-way self-locking structure and an electric

[0002] Machine components. Background Art

[0003] When the drive motor drives the motor shaft to rotate normally, the bearing does not generate self-locking force.

[0004] When the shaft is passively reversed, the stopper generates a self-locking force to stop the motor shaft from rotating. However, in the prior art, the stopper

[0005] The parts are worn too much during use and there are no compensation measures, which greatly affects their service life. Utility Model Content

[0006] The problem solved by the utility model is how to solve the problem of excessive wear of the stopper when the motor shaft is reversed and the motor is self-locked.

[0007] Big problem.

[0008] In order to solve the above problems, the utility model provides a one-way self-locking structure, including: a housing, a first component,

[0009] The first component is arranged in the shell; the first component includes: an inner ring, an outer ring, and a stopper, wherein the inner

[0010] The ring is mounted on the motor shaft and rotates synchronously with the motor shaft; the outer ring is mounted on the inner ring, and the outer ring is close to the shell.

[0011] One side of the body is provided with a plurality of first fixtures and a plurality of second fixtures, and the first fixtures and the second fixtures are in contact to form a first

[0012] The second fixing piece is lower than the edge of the outer ring to form a avoidance groove; one end of the stopper is embedded in the first groove, and the stopper

[0013] The first fixing member is rotatably connected to the first groove; wherein the direction of the first fixing member toward the stop member is the first direction, and vice versa.

[0014] is the second direction; when the motor rotates in the first direction, the outer ring tends to rotate in the first direction, and the stopper

[0015] Pressing the first fixture, the second fixture exerts a thrust in the second direction on the stopper, thereby causing the stopper to move in the second direction.

[0016] When the motor rotates in the opposite direction, the other end of the stopper contacts the housing, thereby blocking the outer ring and preventing the motor shaft from moving together with the outer ring.

[0017] Rotation; when the motor rotates in the second direction, the motor shaft drives the first component to rotate.

[0018] The technical effect achieved by adopting this technical solution is: when the motor shaft rotates in the first direction, the stopper and

[0019] The housing generates friction, which blocks the outer ring and stops the motor shaft from rotating in the first direction. The design of the stopper reduces

[0020] The wear of the stopper during the rotation of the first component is reduced.

[0021] Furthermore, the housing includes: a bearing seat and a bearing cover, wherein mounting holes are provided at both ends of the bearing seat;

[0022] Located on the bearing seat.

[0023] The technical effect achieved after adopting this technical solution is: improving the convenience of installation and disassembly of the internal structure and facilitating maintenance.

[0024] Furthermore, the fixing members are provided at both ends of the bearing cover, and the fixing members pass through the mounting holes to connect the bearing seat and the bearing cover.

[0025] The technical effect achieved by adopting this technical solution: the fixing parts ensure the accurate positioning between the bearing cover and the bearing seat.

[0026] The positioning relationship prevents relative movement during operation, which helps to maintain the correct alignment of the one-way self-locking structure.

[0027] This ensures smooth rotation of the motor shaft.

[0028] Furthermore, the first component also includes: a gasket, which is arranged between the shell and the stopper.

[0029] The technical effect achieved by adopting this technical solution is: the gasket can absorb vibration and impact, and enhance the stopper

[0030] stability.

[0031] Furthermore, the gasket includes: a first gasket and a second gasket, wherein the first gasket is arranged between the bearing seat and the stop

[0032] The second gasket is provided between the bearing cover and the stopper.

[0033] The technical effect achieved by adopting this technical solution: the gasket works together with the stopper to fix the one-way

[0034] The axial position of the self-locking structure prevents unnecessary movement of internal components under the action of axial force;

[0035] It can also bear and evenly distribute axial loads, avoid local excessive pressure, and reduce wear of related components.

[0036] Improve overall reliability and lifespan.

[0037] Furthermore, the distance between the avoidance groove and the motor shaft is greater than the distance between the first groove and the motor shaft.

[0038] The technical effect achieved by adopting this technical solution is: when the motor shaft rotates in the second direction, the stopper moves to the

[0039] The first direction rotates to enter the avoidance groove, thereby reducing wear on the stopper and the housing.

[0040] Furthermore, the inner ring is interference fit with the motor shaft.

[0041] The technical effect achieved by adopting this technical solution: interference fit can ensure that the torque is effectively transmitted from the motor shaft

[0042] to the inner ring, and then to the outer ring and other related components; the interference fit increases the gap between the motor shaft and the bearing

[0043] Rigidity, reducing relative movement under high load or vibration conditions, improving the overall rigidity and

[0044] Stability; by eliminating the mutual sliding between the inner ring and the motor shaft, the interference fit reduces friction and wear,

[0045] The service life of the one-way self-locking structure and the reliability of the equipment are extended, and the safety performance of the equipment is improved.

[0046] Furthermore, the outer ring and the inner ring are in transition fit.

[0047] The technical effect achieved by adopting this technical solution is: transition fit balances friction without causing excessive

[0048] Sliding and vibration; because the transition fit reduces unnecessary friction, it helps to improve the operating efficiency of the mechanical system.

[0049] The appropriate transition fit can reduce the inner ring and motor shaft, outer ring in the one-way self-locking structure.

[0050] Wear between the bearing and the housing, as they have almost no contact in static conditions and only occur under dynamic loads

[0051] There is slight contact, thus extending the service life.

[0052] Furthermore, the stopper is in circumferential interference fit with the outer ring.

[0053] The technical effect achieved by adopting this technical solution is that the close fit between the stopper and the outer ring increases the one-way

[0054] The overall rigidity of the self-locking structure helps to reduce structural deformation under high load or high vibration conditions, improving the machine

[0055] The stability and reliability of the mechanical system; ensuring the fixation of the one-way self-locking structure can avoid internal misalignment or

[0056] Mechanical failure caused by falling off improves the safety of equipment operation; interference fit reduces the one-way self-locking structure

[0057] The relative movement between the inner and outer rings and the motor shaft or housing reduces wear and extends service life.

[0058] In order to solve the above problems, the present invention provides a motor assembly, comprising: a motor body, a motor shaft,

[0059] In the embodiment, the motor shaft is arranged on the motor body, wherein the motor shaft is connected with the above-mentioned one-way self-locking structure.

[0060] The technical effects achieved by adopting this technical solution are: improving the operating efficiency of the motor body and extending its service life.

[0061] In summary, the above-mentioned technical solutions of the present application may have one or more of the following advantages or beneficial effects:

[0062] i) The stopper is rotatably connected to the first groove, which reduces the wear of the stopper. ii) The first groove on the outer ring surface

[0063] It is elastic and pushes the stopper to compensate for wear. iii) The motor shaft and the inner ring are interference fit.

[0064] The outer ring is a transition fit so that it can back squeeze the motor shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] FIG1 is a schematic diagram of the overall structure of a one-way self-locking mechanism and a motor assembly according to an embodiment of the present invention;

[0066] FIG2 is a schematic diagram of the first component in the one-way self-locking mechanism according to an embodiment of the present invention;

[0067] FIG3 is an exploded schematic diagram of the one-way self-locking mechanism of an embodiment of the present utility model;

[0068] FIG4 is a front view of the one-way self-locking mechanism of the embodiment of the present utility model.

[0069] Description of reference numerals:

[0070] 100-one-way self-locking structure; 110-housing; 111-bearing seat; 111a-mounting hole; 112-bearing cover; 112a-

[0071] Fixing member; 120 - first component; 121 - inner ring; 122 - outer ring; 122a - first fixing member; 122b - second fixing member;

[0072] 122c-first groove; 122d-avoidance groove; 123-stopper; 124-gasket; 124a-first gasket; 124b-

[0073] Second gasket; 200 - motor body; 210 - motor shaft; 220 - motor body; 300 - first direction; 400 - second direction. DETAILED DESCRIPTION

[0074] The purpose of this utility model is to provide a one-way self-locking structure and a motor assembly, which are used to solve the problem of

[0075] When the crankshaft reverses and the motor self-locks, the stopper will wear out too much.

[0076] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the present invention is described below with reference to the accompanying drawings.

[0077] The specific embodiments of the utility model are described in detail.

[0078] 1-2 , the present invention provides a one-way self-locking structure 100, comprising: a housing 110, a first component 120, wherein the first component 120 is arranged in the housing 110; the first component 120 comprises: an inner ring 121, an outer ring 122, and a stopper 123, wherein the inner ring 121 is sleeved on the motor shaft 210 and rotates synchronously with the motor shaft 210; the outer ring 122 is sleeved on the inner ring 121, and a side of the outer ring 122 close to the housing 110 is provided with a plurality of first fixtures 122a and a plurality of second fixtures 122b, the first fixture 122a and the second fixture 122b contact to form a first groove 122c, and the second fixture 122b is lower than the edge of the outer ring 122 to form an avoidance groove 122d; one end of the stopper 123 is embedded in the first groove 122c, and the stopper 123 and the first groove 122c are engaged with each other. Rotational connection; wherein, the direction of the first fixture 122a toward the stopper 123 is the first direction 300, and vice versa, it is the second direction 400; when the motor rotates in the first direction 300, the outer ring 122 tends to rotate in the first direction 300, the stopper 123 presses the first fixture 122a, and the second fixture 122b has a thrust in the second direction 400 on the stopper 123, thereby causing the stopper 123 to rotate in the second direction 400, and the other end of the stopper 123 contacts the housing 110, thereby blocking the outer ring 122, causing the motor shaft 210 to be unable to rotate together with the outer ring 122; when the motor rotates in the second direction 400, the motor shaft 210 drives the first component 120 to rotate.

[0079] In this embodiment, when the motor shaft 210 rotates in the first direction 300, the stopper 123 generates friction with the housing 110, pressing against the outer ring 122, and stopping the motor shaft 210 from continuing to rotate in the first direction 300. The design of the stopper 123 reduces wear of the stopper 123 during the rotation of the first component 120.

[0080] Specifically, when the motor shaft 210 rotates in the first direction 300, the motor shaft 210 drives the inner ring 121, and the inner ring 121 drives the outer ring 122 to rotate in the first direction 300. The stopper 123 also rotates in the first direction 300, but when it contacts the second fixture 122b, the second fixture 122b pushes the stopper 123 in the second direction 400, thereby causing the stopper 123 to rotate in the second direction 400. Then, due to centrifugal force, the stopper 123 is pushed against the first fixture 122a, and one end of the stopper 123 is embedded in the first groove 122c, and the other end rubs against the housing 110, thereby blocking the outer ring 122, causing the motor shaft 210 and the outer ring 122 to be unable to rotate together; when the motor shaft 210 rotates in the second direction 400, the motor shaft 210 drives the inner ring 121, and the inner ring 121 drives the outer ring 122 The motor 120 rotates in the first direction 300 due to the centrifugal force, and the stopper 123 rotates in the first direction 300 and abuts against the second fixture 122b. The stopper 123 enters the avoidance groove 122d, and the other end of the stopper 123 moves away from the housing 110. The motor shaft 210 drives the first assembly 120 to operate normally.

[0081] Preferably, the first component 120 is provided with four stoppers 123 inside, and the outer ring is provided with four first grooves.

[0082] When the motor shaft 210 rotates in the first direction 300, the four stoppers 123 press against the outer ring 122, preventing the motor shaft 210 and the outer ring 122 from rotating together. This causes frictional resistance to be generated between the motor shaft 210 and the inner ring 121, and the motor shaft 210 stops rotating.

[0083] Preferably, the outer ring 122 is made of elastic plastic. When the motor shaft 210 rotates in the first direction 300, the stopper 123 rotates in the first direction 300 and contacts the second fixture 122b. The second fixture 122b generates a thrust on the stopper 123, causing the stopper 123 to abut against the first fixture 122a.

[0084] 3-4 , the housing includes a bearing seat 111 and a bearing cover 112 , wherein mounting holes 111 a are provided at both ends of the bearing seat 111 ; and the bearing cover 112 is provided on the bearing seat 111 .

[0085] In this embodiment, the convenience of installation and disassembly of the internal structure is improved, and maintenance is facilitated.

[0086] 3-4, the bearing cover 112 is provided with fixing members 112a at both ends, and the fixing members 112a pass through the mounting holes.

[0087] 111a connects the bearing seat 111 and the bearing cover 112.

[0088] In this embodiment, the fixing member ensures the accurate positional relationship between the bearing cover 112 and the bearing seat 111 to prevent relative movement during operation, which helps to maintain the correct alignment of the one-way self-locking structure 100, thereby ensuring smooth rotation of the motor shaft 210.

[0089] Specifically, the bearing cover 112 and the bearing seat 111 are connected through the fixing piece 112a and the mounting hole 111a to complete the sealing of the bearing.

[0090] 3 , the first assembly 120 further includes a gasket 124 , which is disposed between the housing 110 and the stopper 123 .

[0091] In this embodiment, the gasket 124 can absorb vibration and impact, and enhance the stability of the stopper 123.

[0092] 3 , the gasket 124 includes a first gasket 124a and a second gasket 124b.

[0093] the second gasket 124b is disposed between the bearing cover 112 and the stopper 123.

[0094] In this embodiment, the gasket 124 works together with the stopper 123 to fix the axial position of the one-way self-locking structure 100 and prevent unnecessary movement of internal components under the action of axial force; the gasket 124 can also withstand and evenly distribute axial loads, avoid local excessive pressure, reduce wear of related components, and improve overall reliability and life.

[0095] Specifically, the first gasket 124a and the second gasket 124b are disposed on the left and right sides of the stopper 123 and are in contact with the stopper 123.

[0096] 2 , the distance between the avoidance groove 122 d and the motor shaft 210 is greater than the distance between the first groove 122 c and the motor shaft 210 .

[0097] In this embodiment, when the motor shaft 210 rotates in the second direction 400 , the stopper 123 rotates in the first direction 300 and enters the avoidance groove 122 d, thereby reducing wear on the stopper 123 and the housing 110 .

[0098] Specifically, with the edge of the outer ring 122 as a reference, the avoidance groove 122d is lower than the edge of the outer ring 122, and the first groove 122c is lower than the avoidance groove 122d. One end of the stopper 123 is rotatably connected to the first groove 122c, and the other end enters the avoidance groove 122d when the motor shaft 210 rotates in the second direction 400.

[0099] 2 , the inner ring 121 and the motor shaft 210 are interference fit.

[0100] In this embodiment, the interference fit ensures that torque is effectively transmitted from the motor shaft 210 to the inner ring 121, and then to the outer ring 122 and other related components. The interference fit increases the rigidity between the motor shaft 210 and the bearing, reduces relative movement under high load or vibration conditions, and improves the overall rigidity and stability of the mechanical system.

[0101] By eliminating the mutual sliding between the inner ring and the motor shaft 210 , the interference fit reduces friction and wear, prolongs the service life of the one-way self-locking structure 100 and the reliability of the device, and improves the safety performance of the device.

[0102] 2 , the outer ring 122 and the inner ring 121 are in transition fit.

[0103] In this embodiment, the transition fit balances friction without causing excessive sliding and vibration;

[0104] Matching reduces unnecessary friction, helps improve the efficiency of the mechanical system and reduces energy consumption;

[0105] The transition fit can reduce the wear between the inner ring 121 and the motor shaft, and the outer ring 122 and the bearing seat 111 in the one-way self-locking structure 100, because they have almost no contact in the static state and only have slight contact under dynamic load, thereby extending the service life.

[0106] 2 , the stopper 123 and the outer ring 122 are in circumferential interference fit.

[0107] In this embodiment, the tight fit between the stopper 123 and the outer ring 122 increases the overall rigidity of the one-way self-locking structure 100, helps reduce structural deformation under high load or high vibration conditions, and improves the stability and reliability of the mechanical system; ensuring the fixed position of the one-way self-locking structure 100 can avoid mechanical failures caused by internal misalignment or falling off, and improves the safety of equipment operation; the interference fit reduces the relative movement between the inner and outer rings 121 of the one-way self-locking structure 100 and the motor shaft 210 or the housing 110, thereby reducing wear and extending the service life.

[0108] 1 , a motor assembly 200 includes a motor body 220 and a motor shaft 210 , wherein the motor shaft 210 is disposed on the motor body 220 , wherein the motor shaft 210 is connected to a one-way self-locking structure 100 provided by any of the above technical solutions.

[0109] In this embodiment, the operating efficiency of the motor body 220 is improved and the service life is extended.

[0110] Specifically, the single-machine self-locking structure 100 is disposed on the motor body 220 , and the motor body 220 drives the motor shaft 210 .

[0111] The present invention provides a one-way self-locking structure 100 and a motor assembly 200 to solve the problem of excessive wear on the stopper 123 when the motor shaft 210 is reversed and the motor is self-locked. Specifically, when the motor shaft 210 rotates in the first direction 300, the motor shaft 210 drives the inner ring 121, and the inner ring 121 drives the outer ring 122 to rotate in the first direction 300. The stopper 123 also rotates in the first direction 300, but when it contacts the second fixture 122b, the second fixture 122b pushes the stopper 123 in the second direction 400, thereby causing the stopper 123 to rotate in the second direction 400. Then, due to centrifugal force, the stopper 123 is pressed against the first fixture 122a, and one end of the stopper 123 is embedded in the first groove 122c, and the other end rubs against the housing 110, thereby blocking the outer ring 122, causing the motor shaft 210 and the outer ring 122 to be unable to rotate together; when the motor shaft 210 rotates in the second direction 400, the motor shaft 210 drives the inner ring 121, and the inner ring 121 The outer ring 122 is driven to rotate in the first direction 300. The stopper 123 rotates in the first direction 300 due to the centrifugal force and abuts against the second fixture 122b. The stopper 123 enters the avoidance groove 122d. The other end of the stopper 123 moves away from the housing 110. The motor shaft 210 drives the first assembly 120 to operate normally.

[0112] Although the present invention is disclosed as above, the present invention is not limited thereto.

[0113] Various changes and modifications may be made without departing from the spirit and scope of the present invention.

[0114] The scope of protection shall be based on the scope defined by the claims.

Claims

1. A one-way self-locking structure, characterized in that: include: case; A first component is disposed in the housing and includes: The inner ring is sleeved on the motor shaft and rotates synchronously with the motor shaft; An outer ring is sleeved on the inner ring, and a side of the outer ring close to the shell is provided with a plurality of first fixings and a plurality of second fixings, wherein the first fixings contact with the second fixings to form a first groove, and the second fixings are lower than the edge of the outer ring to form an avoidance groove; a stopper, one end of which is embedded in the first groove, and the stopper is rotatably connected to the first groove; Among them, the direction of the first firmware toward the stop member is the first direction, and vice versa, it is the second direction; when the motor rotates in the first direction, the outer ring tends to rotate in the first direction, the stop member presses the first firmware, and the second firmware has a thrust in the second direction on the stop member, thereby causing the stop member to rotate in the second direction, and the other end of the stop member contacts the shell, thereby blocking the outer ring, causing the motor shaft to be unable to rotate together with the outer ring; when the motor rotates in the second direction, the motor shaft drives the first component to rotate.

2. The one-way self-locking structure according to claim 1, characterized in that: The housing comprises: A bearing seat, with mounting holes provided at both ends of the bearing seat; A bearing cover is arranged on the bearing seat.

3. The one-way self-locking structure according to claim 2, characterized in that: Fixing pieces are provided at both ends of the bearing cover, and the fixing pieces pass through the mounting holes to connect the bearing seat and the bearing cover.

4. The one-way self-locking structure according to claim 2, characterized in that: The first component also includes: A gasket is arranged between the shell and the stopper.

5. The one-way self-locking structure according to claim 4, characterized in that: The gasket comprises: a first gasket, the first gasket being disposed between the bearing seat and the stopper; A second gasket is provided between the bearing cover and the stopper.

6. The one-way self-locking structure according to claim 1, characterized in that: The distance between the avoidance groove and the motor shaft is greater than the distance between the first groove and the motor shaft.

7. The one-way self-locking structure according to claim 1, characterized in that: The inner ring is interference fit with the motor shaft.

8. The one-way self-locking structure according to claim 1, characterized in that: The outer ring and the inner ring are in transition fit.

9. The one-way self-locking structure according to claim 1, characterized in that: The stopper is circumferentially interference-fitted with the outer ring.

10. A motor assembly, characterized in that: include: Motor body; a motor shaft, the motor shaft being arranged on the motor body; Wherein, the motor shaft is connected to the one-way self-locking structure described in any one of claims 1 to 9.

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