Collapse mechanism

Abstract

The application relates to the technical field of mechanical safety control, in particular to a collapsing mechanism. The collapsing mechanism comprises a fixed seat and a movable plate for mounting a massage assembly, the movable plate is slidably arranged on the fixed seat, the fixed seat is provided with an elastic arm, one end of the elastic arm is connected to the fixed seat, and the other end of the elastic part is provided with a limiting part; the limiting part limits the sliding movement of the movable plate relative to the fixed seat; wherein the movable plate can transmit external force received to the limiting part to exert a first action force on the limiting part; when the first action force is greater than a preset action force, the limiting part loses the limiting effect on the movable plate. So that the movable plate is in a free movement state and realizes the collapsing effect under emergency, without the need to set an energy storage part, the problem that the poor collapsing effect caused by the performance degradation of the energy storage part of the collapsing mechanism is improved; and the resetting of the collapsing mechanism after collapsing under emergency is simple, the reusability is higher, and the problem that the maintenance cost of the collapsing mechanism after collapsing is high is improved.

Description

Technical Field

[0001] This application relates to the field of mechanical safety control technology, and in particular to a collapse mechanism. Background Technology

[0002] Seat massage comfort systems use either pneumatic or mechanical massage. Mechanical massage is more intense and has a more significant massage effect compared to pneumatic massage. However, in the event of an emergency in the vehicle, if the mechanical massage mechanism is still operating, it may cause injury to the human body.

[0003] In related technologies, mechanical massage devices use a multi-link system to extend and retract the robotic arm. The collapsing mechanism employed is either a storage device that drives the links to retract the arm, or a partial breakage of the links, allowing the arm to rotate freely and retract under external force. The storage device is typically a spring. However, after repeated compression and release, the spring's performance deteriorates, resulting in poor collapsing and difficulty in retracting the arm. Furthermore, broken links lead to high maintenance costs for the massage device. Utility Model Content

[0004] The embodiments of this application aim to provide a collapse mechanism that can at least improve the problem of poor collapse effect caused by the performance degradation of the energy storage component in the collapse mechanism, and improve the problem of high maintenance cost after the collapse mechanism is used.

[0005] In order to solve the above-mentioned technical problems, the embodiments of this application adopt the following technical solutions: In a first aspect, embodiments of this application provide a collapse mechanism, which includes a fixed base and a movable plate for mounting a massage component. The movable plate is slidably disposed on the fixed base, and the fixed base is provided with an elastic arm. One end of the elastic arm is connected to the fixed base, and the other end is provided with a limiting portion. The limiting portion limits the sliding movement of the movable plate relative to the fixed base. The movable plate can transmit the external force it receives to the limiting portion to apply a first force to the limiting portion. When the first force is greater than a preset force, the limiting portion loses its limiting function on the movable plate.

[0006] In some embodiments, the movable plate is slidably disposed on the fixed base along a first direction; the movable plate is capable of transmitting the external force received along the first direction to the limiting portion; the limiting portion includes a retaining wall, the retaining wall facing away from the first direction, and the retaining wall abutting against the movable plate; along a second direction perpendicular to the first direction, there is a gap between the connection point of the elastic arm and the fixed base and the movable plate.

[0007] In some embodiments, the movable plate is provided with a receiving groove on the side near the elastic arm. After the limiting part loses its limiting effect on the movable plate, the limiting part is at least partially located in the receiving groove, so that the elastic arm at least partially recovers its deformation.

[0008] In some embodiments, the side of the limiting portion facing the movable plate includes a first guide slope, which is used to drive the limiting portion away from the receiving groove when the movable plate applies a force opposite to the first direction to the limiting portion.

[0009] In some embodiments, the inner wall of the receiving groove includes a second guide slope, which is used to drive the limiting portion away from the receiving groove when the movable plate applies a force opposite to the first direction to the limiting portion.

[0010] In some embodiments, the abutment wall is a plane, and the area where the fixing seat abuts against the abutment wall is a plane.

[0011] In some embodiments, the elastic arm is integrally formed with the limiting portion.

[0012] In some embodiments, the limiting portion is connected to the end of the elastic arm by a first fastener. The limiting portion includes a limiting segment and a connecting segment connected together. The limiting segment limits the sliding movement of the movable plate relative to the fixed seat. The connecting segment and the limiting segment are arranged sequentially along a first direction. The limiting segment has a first groove on the side facing the first direction, and the elastic arm portion is embedded in the first groove.

[0013] In some embodiments, the connecting segment has a first protrusion, and the elastic arm has a second protrusion on one side along a third direction, the third direction being perpendicular to the first direction; along the first direction, the first protrusion and the limiting segment respectively abut against opposite sides of the second protrusion.

[0014] In some embodiments, the limiting segment has a notch on the side opposite to the third direction, and the notch is used for the elastic arm to be inserted into the first groove along the third direction.

[0015] In some embodiments, the elastic arm and / or the limiting portion has a weakening portion, which breaks when the first force is greater than a preset force.

[0016] The collapse mechanism of this application embodiment can transmit the external force to the limiting part when the movable plate is subjected to an external force, such as the external force from the massage component installed on the movable plate, so as to apply a first force to the limiting part. If the first force is greater than a preset force, the limiting part loses its limiting function on the movable plate, so that the movable plate loses its limiting restriction in an emergency and moves freely, thereby realizing its collapse function.

[0017] When a massage component is installed on the movable plate and the massage component needs the limiting position of the movable plate to maintain its extended state, the massage component can change to a retracted state when the movable plate is in a free-moving state; or the massage component can move with the movable plate to a storage position to reduce the harm caused to the human body by the massage component in the event of an emergency in the vehicle.

[0018] It eliminates the need for energy storage components, simplifies the structure of the collapse mechanism, reduces manufacturing costs, and improves the problem of poor collapse effect caused by the performance degradation of energy storage components after long-term use.

[0019] This eliminates the need for the connecting rod to break, reducing maintenance costs for massage components using the aforementioned collapse mechanism after collapse. Furthermore, the collapse mechanism in this solution offers a simple reset method after collapse in an emergency, allowing for reuse and mitigating the high maintenance costs associated with collapse mechanisms.

[0020] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 This is a schematic diagram of the collapse mechanism and massage component according to an embodiment of this application; Figure 2 This is an exploded view of the collapse mechanism and massage component according to an embodiment of this application; Figure 3 This is an exploded view of the collapse mechanism and massage component according to an embodiment of this application from another perspective; Figure 4 yes Figure 1 A schematic diagram of the structure of the collapsible mechanism's elastic arm and limiting part cooperating with the movable plate; Figure 5 yes Figure 4Exploded view of the central collapse mechanism; Figure 6 yes Figure 4 A schematic diagram of the structure of the flexible arm and the limiting part; Figure 7 yes Figure 6 Exploded view of the flexible arm and limiting part.

[0023] The reference numerals in the detailed embodiments are as follows: 100. Collapsible mechanism; 1. Fixed base; 11. Slide rail; 12. Fourth hole; 2. Movable plate; 21. Slider; 22. Receiving groove; 221. Second guide slope; 3. Massage component; 31. Robotic arm structure; 311. First arm; 32. Telescopic structure; 4. Elastic arm; 41. Second hole; 42. Second protrusion; 43. Third hole; 5. Limiting part; 51. Supporting wall; 52. First guide slope; 53. Limiting section; 531. First groove; 532. Notch; 54. Connecting section; 541. First hole; 542. First protrusion; 6. First fastener; 7. Second fastener; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0024] To facilitate understanding of this application, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a more detailed account. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0027] In the description of the embodiments of this application, the terms "first," "second," etc., are used to define components merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0029] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0030] Please see Figure 1 This application provides a collapse mechanism 100, which includes a fixed base 1 and a movable plate 2. A massage component 3 can be mounted on the movable plate 2. The fixed base 1 has an elastic arm 4, one end of which is connected to the fixed base 1, and the other end of which has a limiting portion 5. The movable plate 2 is slidably disposed on the fixed base 1, and the limiting portion 5 limits the sliding movement of the movable plate 2 relative to the fixed base 1. The movable plate 2 can transmit external forces to the limiting portion 5 to apply a first force to the limiting portion 5.

[0031] To facilitate understanding of the working principle and beneficial effects of the collapse mechanism 100, an example will be provided using the movable plate 2 equipped with the massage component 3.

[0032] In some embodiments, please refer to Figure 2 and Figure 3The massage component 3 includes at least a robotic arm structure 31 and a telescopic structure 32. Generally, the massage component 3 also includes a drive mechanism that can drive the robotic arm structure 31 to perform kneading massage and / or tapping massage. This is common in existing mechanical massage mechanisms and can be selected according to specific massage needs, and will not be described in detail here. The robotic arm structure 31 includes a first arm 311, the middle of which is rotatably connected to the fixed base 1. The first end of the first arm 311 is used for massage, and the second end of the first arm 311 is connected to the telescopic structure 32 for transmission. The telescopic structure 32 is used to drive the robotic arm structure 31 to swing to achieve extension or retraction, for example, to move the first end of the first arm 311 away from the fixed base 1 and change the robotic arm structure 31 to the extension state; or to move the first end of the first arm 311 closer to the fixed base 1 and change the robotic arm structure 31 to the retraction state. Optionally, both the fixed base 1 and the movable plate 2 are flat to facilitate the installation of the robotic arm structure 31 and the telescopic structure 32. Optionally, the telescopic structure 32 is a cylinder or a linear drive motor.

[0033] It is understandable that when the telescopic structure 32 applies a force to the second end of the first arm 311, the movable plate 2 will exert a force on the limiting part 5. In particular, when the sliding direction of the movable plate 2 relative to the fixed base 1 is parallel to or at a small angle to the force direction of the telescopic structure 32, the force exerted by the movable plate 2 on the limiting part 5 is greater.

[0034] In some embodiments, when the first force is greater than the preset force, the limiting part 5 loses its limiting function on the movable plate 2.

[0035] Option 1: The movable plate 2 is slidably mounted on the fixed base 1 along the first direction X; the movable plate 2 can transmit the external force along the first direction X to the limiting part 5; the limiting part 5 includes a retaining wall 51, which faces away from the first direction X and abuts against the movable plate 2; along the second direction Y perpendicular to the first direction X, there is a gap between the connection point of the elastic arm 4 and the fixed base 1 and the movable plate 2. It can be understood that the movable plate 2 exerts a force on the limiting part 5, and the connection point of the elastic arm 4 and the fixed base 1 is separated from this force, that is, the force forms a torque on the elastic arm 4, causing the elastic arm 4 to bend in a direction away from the movable plate 2. The elastic arm 4, through its own anti-bending deformation characteristics, counteracts the aforementioned torque, allowing the supporting wall 51 to abut against the movable plate 2. Furthermore, the bending deformation elastic modulus of the elastic arm 4 is designed so that when the first force exceeds a preset force, the elastic arm 4 cannot maintain the supporting wall 51 against the movable plate 2, and thus the elastic arm 4 bends away from the movable plate 2 until the supporting wall 51 slips off the movable plate 2. When the supporting wall 51 slips off the movable plate 2, the limiting part 5 loses its limiting function on the movable plate 2, allowing the movable plate 2 to move freely relative to the fixed base 1, achieving its collapse effect. Optionally, the elastic arm 4 is made of metal, such as steel or copper, which has good elasticity.

[0036] Option 2: The elastic arm 4 and / or the limiting part 5 have a weakened portion (not shown). When the first force exceeds the preset force, the weakened portion breaks. After the weakened portion breaks, the limiting part 5 loses its limiting function on the movable plate 2, allowing the movable plate 2 to move freely relative to the fixed base 1, thus achieving its collapse function. Optionally, the elastic arm 4 and / or the limiting part 5 have a cutout, and the cutout is the weakened portion. Optionally, the limiting part 5 is made of plastic, and since the limiting part 5 is weak, it can serve as a weakened portion.

[0037] The weakened part fracture can also be configured to fracture when the first applied force is greater than the second preset applied force. The second preset applied force is greater than the preset applied force, for example, the second preset applied force can be 1.2 times, 1.5 times, or 2 times the preset applied force, as a safety measure for Scheme 1. That is, Scheme 1 is triggered first, and when Scheme 1 fails, Scheme 2 is triggered when the first applied force is greater than the second preset applied force.

[0038] When the movable plate 2 is freely movable relative to the fixed base 1, the robotic arm structure 31 is in a free state. If the robotic arm structure 31 is subjected to an external force that causes it to retract, it will retract under that force. Thus, in an emergency, if a person violently impacts the robotic arm structure 31, the limiting part 5 loses its limiting function on the movable plate 2. When the movable plate 2 is freely movable relative to the fixed base 1, only a small force needs to be applied to the robotic arm structure 31 to retract it, reducing the risk of injury to the person in an emergency.

[0039] In some other embodiments, both the robotic arm structure 31 and the telescopic structure 32 are mounted on the movable plate 2, and the massage component 3 is used to slide with the movable plate 2 to the storage position. For example, the first direction X is set at an angle to the back of the seat, such as a 30-degree angle. When the massage component 3 is subjected to an external force perpendicular to the back of the seat, the massage component 3 pushes against the movable plate 2, causing the movable plate 2 to have a tendency to slide relative to the fixed seat 1, so that the movable plate 2 applies a first force to the limiting part 5; when the limiting part 5 loses its limiting effect on the movable plate 2, the movable plate 2 and the massage component 3 move toward the rear of the seat to the storage position under the action of the external force.

[0040] In some embodiments, when the robotic arm structure 31 is subjected to a second force in the direction opposite to the third direction Z, an external force along the first direction X is applied to the movable plate 2. The third direction Z is the direction in which the fixed base 1 and the robotic arm structure 31 are aligned. It is understood that when the robotic arm structure 31 is subjected to the second force, it tends to retract into a retracted state. For example, please refer to... Figure 2 and Figure 3The first end of the first arm 311 extends away from the first direction X and can simultaneously extend in a direction away from the fixed base 1; the second end of the first arm 311 extends in a direction towards the fixed base 1; the rotation axis of the first arm 311 is parallel to the second direction Y, and the second direction Y is perpendicular to the third direction Z. When the telescopic structure 32 applies a force away from the first direction X to the second end of the first arm 311, the first arm 311 rotates counterclockwise (see [reference]). Figure 2 This causes the first end of the first arm 311 to move away from the fixed base 1, thus changing the robotic arm structure 31 to the ejected state; when the telescopic structure 32 applies a force toward the second end of the first arm 311 in the first direction X, the first arm 311 rotates clockwise (see [link]). Figure 2 This causes the first end of the first arm 311 to move toward the fixed base 1, so that the robotic arm structure 31 changes to a retracted state.

[0041] When the telescopic structure 32 applies a force in the opposite direction X to the second end of the first arm 311, the limiting part 5 applies a reaction force in the opposite direction X to the movable plate 2, restricting the movable plate 2 from moving relative to the fixed base 1 in the direction X, thereby realizing the transformation of the above-mentioned drive robotic arm structure 31 to the ejection state, and maintaining the robotic arm structure 31 in the ejection state.

[0042] When the robotic arm structure 31 is in the extended state, if it is subjected to a second force that causes it to transition to the retracted state, the movable plate 2 tends to move relative to the fixed seat 1 in the first direction X, causing the movable plate 2 to apply a first force to the limiting part 5. In this example, the first force is perpendicular to the direction of the second force, so that when the collapse mechanism 100 is installed in the seat, the first direction X can be set parallel to the backrest, reducing the thickness of the backrest occupied by the collapse mechanism 100, which is beneficial for thinning the backrest of the seat.

[0043] In some embodiments, please refer to Figure 2 and Figure 3 The fixed base 1 is provided with a slide rail 11, and the movable plate 2 is provided with a slider 21. The slider 21 is slidably connected to the slide rail 11, and the slide rail 11 extends along a first direction X. This allows the movable plate 2 to be slidably mounted on the fixed base 1 along the first direction X. Optionally, multiple slide rails 11 can be used to enhance the stability of the slidable connection between the movable plate 2 and the fixed base 1; for example, two slide rails 11 can be used. Optionally, the movable plate 2 can be slidably connected to the same slide rail 11 via multiple sliders 21 to enhance the stability of the slidable connection between the movable plate 2 and the fixed base 1; for example, one slide rail 11 can be slidably connected to two sliders 21.

[0044] In other embodiments, the limiting part 5 is engaged, bonded, or fastened to the movable plate 2, as long as it can limit the position of the movable plate 2 relative to the fixed base 1.

[0045] In some other embodiments, the movable plate 2 can be slidably disposed on the fixed base 1 along a curve, and / or, the direction of the force exerted by the telescopic structure 32 on the robotic arm structure 31 has an angle with the first direction X, and / or, the movable plate 2 can be rotatably disposed on the fixed base 1 about a rotation axis away from itself (i.e., the movable plate 2 can be oscillatingly disposed on the fixed base 1). It is only necessary to satisfy the requirement that the movable plate 2 applies a first force to the limiting portion 5 when the robotic arm structure 31 is subjected to a second force that transitions it to a retracted state.

[0046] In related technologies, the robotic arm structure 31 needs to be retracted via an energy storage component, typically a spring. After repeated compression and release, the spring's performance deteriorates, making it difficult to retract the robotic arm structure 31. Alternatively, a connecting rod needs to break to achieve the free state of the robotic arm structure 31, but this results in high maintenance costs. In this embodiment, however, the robotic arm structure 31 relies on external force to transform into a retracted state or move to a storage position, eliminating the need for an energy storage component. This simplifies the structure of the collapse mechanism 100 and reduces manufacturing costs. It also improves the problem of poor collapse effect caused by the energy storage component's performance deterioration. Furthermore, it eliminates the need for connecting rod breakage, reducing maintenance costs for the massage component 3 after collapse.

[0047] In some embodiments, please refer to Figure 4 and Figure 5 The movable plate 2 has a receiving groove 22 on the side near the elastic arm 4. After the limiting part 5 loses its limiting effect on the movable plate 2, the limiting part 5 is at least partially located in the receiving groove 22, so that the elastic arm 4 at least partially recovers its deformation. After the collapse mechanism 100 collapses, the movable plate 2 moves a certain distance relative to the fixed seat 1. At this time, the receiving groove 22 and the limiting part 5 are aligned along the first direction X, so that the limiting part 5 enters the receiving groove 22 under the force of the elastic arm 4 recovering its deformation. This allows the elastic arm 4 to recover its deformation or recover part of its deformation, preferably recovering its deformation. This improves the problem of performance degradation of the elastic arm 4 due to long-term deformation and reduces the performance loss of the limiting part 5 re-limiting the movable plate 2 after the collapse mechanism 100 is repaired and reset. Optionally, the limiting part 5 is triangular prism or has a right trapezoidal cross-section, and the receiving groove 22 is triangular prism or has a right trapezoidal cross-section.

[0048] In some embodiments, please refer to Figure 4 and Figure 5The limiting part 5, facing the movable plate 2, includes a first guide slope 52. The first guide slope 52 is used to drive the limiting part 5 away from the receiving groove 22 when the movable plate 2 applies a force opposite to the first direction X. For example, the angle between the normal of the first guide slope 52 and the first direction X is acute; for instance, the limiting part 5 is approximately a triangular prism-shaped hook, and the first guide slope 52 and the abutting wall 51 are two adjacent sides of the triangular prism-shaped limiting part 5. Thus, when the inner wall of the receiving groove 22 moves relative to the first guide slope 52 away from the first direction X, it drives the limiting part 5 to move away from the movable plate 2, while the elastic arm 4 deforms until the limiting part 5 disengages from the receiving groove 22. The movable plate 2 continues to move relative to the fixed base 1 away from the first direction X to its initial position, the elastic arm 4 returns to its original deformation, and the abutting wall 51 of the limiting part 5 abuts against the movable plate 2 again, re-limiting the sliding position of the movable plate 2 relative to the fixed base 1. The initial position is the position of the movable plate 2 relative to the fixed base 1 before the limiting part 5 loses its limiting effect on the movable plate 2.

[0049] In some embodiments, please refer to Figure 4 and Figure 5 The inner wall of the receiving groove 22 includes a second guide slope 221. The second guide slope 221 is used to drive the limiting part 5 away from the receiving groove 22 when the movable plate 2 applies a force away from the first direction X to the limiting part 5. For example, the normal of the second guide slope 221 makes an obtuse angle with the first direction X. For example, the second guide slope 221 is disposed opposite to the first guide slope 52. Thus, when the limiting part 5 moves relative to the second guide slope 221 along the first direction X, the second guide slope 221 drives the limiting part 5 to move away from the movable plate 2, while the elastic arm 4 deforms until the limiting part 5 disengages from the receiving groove 22. The movable plate 2 continues to move relative to the fixed base 1 away from the first direction X to the initial position. The elastic arm 4 returns to its original deformation, and the abutment wall 51 of the limiting part 5 abuts against the movable plate 2 again, re-limiting the sliding position of the movable plate 2 relative to the fixed base 1. When the limiting part 5 is provided with a first guide slope 52, the limiting part 5 can contact the second guide slope 221 through the first guide slope 52, thereby increasing the contact area between the limiting part 5 and the second guide slope 221 and reducing the friction between the limiting part 5 and the movable plate 2.

[0050] When the limiting part 5 is provided with a first guide slope 52 and / or the inner wall of the receiving groove 22 is provided with a second guide slope 221, the telescopic structure 32 can apply a force toward the second end of the first arm 311 in the direction of the first direction X, so that the movable plate 2 slides relative to the fixed seat 1 away from the first direction X, so that the abutting wall 51 of the limiting part 5 abuts against the movable plate 2 again.

[0051] In some embodiments, please refer to Figure 4 and Figure 5The supporting wall 51 is a plane, and the area where the fixing seat 1 abuts against the supporting wall 51 is also a plane. This increases the contact area between the supporting wall 51 and the fixing seat 1, reducing slippage. It is understood that the supporting wall 51 abuts against the corner of the fixing seat 1, and this corner may have a rounded chamfer or a flat chamfer to reduce damage caused by the interaction between the corner of the fixing seat 1 and the sharp point of the limiting part 5 when the limiting part 5 slips off the fixing seat 1.

[0052] In some embodiments, the elastic arm and the limiting portion are integrally formed. For example, the elastic arm and the limiting portion are integrally injection molded, cast, or sheet metal formed.

[0053] In some embodiments, please refer to Figure 4 and Figure 5 The elastic arm 4 is connected to the fixed base 1 and the limiting part 5 by screws.

[0054] In some embodiments, please refer to Figure 6 and Figure 7 The limiting part 5 is connected to the end of the elastic arm 4 via a first fastener 6. The limiting part 5 includes a limiting section 53 and a connecting section 54. The limiting section 53 limits the sliding movement of the movable plate 2 relative to the fixed base 1. Exemplarily, the connecting section 54 has a first hole 541, and the elastic arm 4 has a second hole 41. The first fastener 6 passes through the first hole 541 and the second hole 41 to connect the connecting section 54 to the elastic arm 4. The connecting section 54 and the elastic arm 4 are detachably connected via the first fastener 6. When the limiting part 5 includes a weakened portion, it facilitates the replacement of the damaged limiting part 5. Optionally, the second hole 41 is a screw hole, and the first fastener 6 is a screw, which is threadedly connected to the elastic arm 4.

[0055] In some embodiments, please refer to Figure 6 and Figure 7 The limiting segment 53 and the connecting segment 54 are arranged sequentially along the first direction X. A first groove 531 is provided on the side of the limiting segment 53 facing the first direction X, and a portion of the elastic arm 4 is located in the first groove 531. One end of the elastic arm 4 is inserted into the first groove 531 to prevent the limiting part 5 from rotating around the first fastener 6, maintaining the installation angle of the limiting part 5 relative to the elastic arm 4. Optionally, the first groove 531 is adapted to the elastic arm 4; for example, along the extension direction of the elastic arm 4, the cross-section of the elastic arm 4 is the same as and equal in size to the cross-section of the first groove 531.

[0056] In some embodiments, please refer to Figure 6 and Figure 7The connecting section 54 is provided with a first protrusion 542, and the elastic arm 4 is provided with a second protrusion 42 on one side along the third direction Z, which is perpendicular to the first direction X. Along the first direction X, the first protrusion 542 and the limiting section 53 respectively abut against the opposite sides of the second protrusion 42. This prevents the limiting part 5 from rotating around the first fastener 6 and maintains the installation angle of the limiting part 5 relative to the elastic arm 4.

[0057] In some embodiments, please refer to Figure 6 and Figure 7 The limiting segment 53 has a notch 532 on the side opposite to the third direction Z. The notch 532 is used for the elastic arm 4 to be inserted into the first groove 531 along the third direction Z. Since the first protrusion 542 abuts against the side of the second protrusion 42 opposite to the limiting segment 53, it is difficult for the elastic arm 4 to be inserted into the first groove 531 in the opposite direction of the first direction X. By setting the notch 532, the elastic arm 4 can be inserted into the first groove 531 along the third direction Z. At the same time, the second protrusion 42 is inserted between the first protrusion 542 and the limiting segment 53 along the third direction Z.

[0058] In some embodiments, please refer to Figure 5 The elastic arm 4 has at least two third holes 43, and the fixed base 1 has at least two fourth holes 12. The elastic arm 4 includes at least two second fasteners 7, each passing through one third hole 43 and one fourth hole 12 to connect the elastic arm 4 to the fixed base 1. The second fasteners 7 detachably connect the elastic arm 4 to the fixed base 1, facilitating replacement of damaged elastic arms 4. Connecting the elastic arm 4 to the fixed base 1 with two second fasteners 7 prevents the elastic arm 4 from rotating around one of the second fasteners 7, maintaining the installation angle of the elastic arm 4 relative to the fixed base 1. Optionally, the fourth hole 12 is a screw hole, and the second fastener 7 is a screw, threadedly connected to the fixed base 1.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A collapse mechanism, characterized in that, The device includes a fixed base and a movable plate for mounting massage components. The movable plate is slidably disposed on the fixed base. The fixed base is provided with an elastic arm, one end of which is connected to the fixed base and the other end of which is provided with a limiting part. The limiting part limits the sliding movement of the movable plate relative to the fixed base; The movable plate can transmit the external force it receives to the limiting part to apply a first force to the limiting part; when the first force is greater than a preset force, the limiting part loses its limiting function on the movable plate.

2. The collapse mechanism according to claim 1, characterized in that, The movable plate is slidably disposed on the fixed base along the first direction; The movable plate can transmit the external force received along the first direction to the limiting part; The limiting part includes a retaining wall, which faces away from the first direction and abuts against the movable plate; Along a second direction perpendicular to the first direction, there is a gap between the connection point of the elastic arm and the fixed seat and the movable plate.

3. The collapse mechanism according to claim 2, characterized in that, The movable plate is provided with a receiving groove on the side near the elastic arm. After the limiting part loses its limiting effect on the movable plate, the limiting part is at least partially located in the receiving groove, so that the elastic arm at least partially recovers its deformation.

4. The collapse mechanism according to claim 3, characterized in that, The limiting part includes a first guide slope on the side facing the movable plate. The first guide slope is used to drive the limiting part away from the receiving groove when the movable plate applies a force opposite to the first direction to the limiting part. And / or, the inner wall of the receiving groove includes a second guide slope, which is used to drive the limiting part away from the receiving groove when the movable plate applies a force opposite to the first direction to the limiting part.

5. The collapse mechanism according to claim 2, characterized in that, The supporting wall is a plane, and the area where the fixing seat abuts against the supporting wall is a plane.

6. The collapse mechanism according to claim 1, characterized in that, The elastic arm and the limiting part are integrally formed.

7. The collapse mechanism according to claim 1, characterized in that, The limiting part is connected to the end of the elastic arm by a first fastener. The limiting part includes a limiting section and a connecting section. The limiting section limits the sliding movement of the movable plate relative to the fixed base. The connecting segment and the limiting segment are arranged sequentially along the first direction; The limiting segment has a first groove on the side facing the first direction, and the elastic arm portion is embedded in the first groove.

8. The collapse mechanism according to claim 7, characterized in that, The connecting section is provided with a first protrusion, and the elastic arm is provided with a second protrusion on one side along a third direction, the third direction being perpendicular to the first direction; Along the first direction, the first protrusion and the limiting segment respectively abut against the opposite sides of the second protrusion.

9. The collapse mechanism according to claim 8, characterized in that, The limiting segment has a notch on the side opposite to the third direction, and the notch is used for the elastic arm to be inserted into the first groove along the third direction.

10. The collapse mechanism according to any one of claims 1 to 9, characterized in that, The elastic arm and / or the limiting part has a weakening part, which breaks when the first force is greater than the preset force.

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