Silencing assembly and sliding rail device

Abstract

The utility model provides a silencing assembly and a sliding rail device, and belongs to the technical field of automobile seats. The sliding rail device solves the problems that an existing sliding rail device can generate tremolo and is unstable in locking. The utility model discloses a silencing assembly and a sliding rail device. The silencing assembly comprises an upper arc strip, a lower arc strip, a left arc strip, a right arc strip, an upper abutting block, a lower abutting block and a gap. In the process that the left arc strip and the right arc strip deform for the first time, due to the fact that a gap exists between the upper abutting block and the lower abutting block, the movable plate only bears counter-acting force generated by bending of the left arc strip and the right arc strip, and therefore the clamping jaws can be rapidly clamped into the adjacent clamping grooves; when the left arc strip and the right arc strip deform for the second time, the upper arc strip, the lower arc strip, the left arc strip and the right arc strip deform at the same time, the counter-acting force of the silencing assembly on the movable plate is increased, so that the silencing assembly can effectively buffer the movable plate, and the effect that the movable plate vibrates due to spring vibration caused by impact force is reduced is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seats and relates to a muffler component and a slide rail device. Background Art

[0002] The seat slides include an upper slide, a lower slide and a locking mechanism. Usually, the upper slide is connected to the seat, and the lower slide is connected to the vehicle body floor. The sliding adjustment of the seat is achieved by the movement of the upper slide along the lower slide. The locking mechanism is used to lock the upper slide after it is adjusted to a predetermined position to prevent the upper slide from continuing to slide relative to the lower rail.

[0003] In order to ensure that there is no tooth jumping when the locking mechanism is locked, a very high locking speed is set for the locking part. At the moment of locking, the locking part collides with the lower rail (or the upper rail and the lower rail at the same time), and the speed instantly becomes zero. At this time, the kinetic energy of the locking part will be converted into vibration energy of the locking part and the lower rail (or also including the upper rail), thereby producing a locking sound. Secondly, at the moment of locking, the elastic potential energy of the spring of the locking mechanism will also be partially converted into the vibration energy of the spring. If the spring is a tension spring or other structure that is prone to vibration and abnormal noise, obvious vibrato will be produced. In addition to the locking condition at the moment, the car will also transmit vibration to the return spring during driving, thereby producing vibrator.

[0004] In order to prevent the above-mentioned vibration and locking sound, the vibration of the spring is usually reduced by using silencer cotton or plastic sleeve, but the assembly operability is limited by the size of the spring; a small number of locking mechanisms will increase the elastic part and support the spring through the deformation of the elastic part to reduce the vibration of the spring. Specifically, the elastic part converts the vertical force of the locking mechanism on the elastic part into the force of the elastic part on the spring through a specific shape, but due to the shape, the vertical reaction force of the elastic part on the locking mechanism will be larger, and the reaction force at the locking position reaches the maximum. This structure will affect the locking condition of the locking mechanism to a certain extent. Summary of the invention

[0005] The utility model aims to solve the above problems in the prior art and proposes a silencer assembly and a slide rail device which can prevent the spring from emitting vibration and ensure that the locking mechanism can be locked stably.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a silencer assembly, comprising:

[0007] Upper arc strip;

[0008] The lower arc bar is arranged below the upper arc bar, one end of the upper arc bar is connected to one end of the lower arc bar through a left arc bar, the other end of the lower arc bar is connected to the other end of the upper arc bar through a right arc bar, an upper stop block is provided in the middle of the upper arc bar facing the lower arc bar, and a lower stop block is provided in the middle of the lower arc bar facing the upper arc bar, and there is a gap between the upper stop block and the lower stop block.

[0009] In the above-mentioned silencer assembly, the thickness of the upper arc bar is the same as that of the lower arc bar, the thickness of the left arc bar is the same as that of the right arc bar, and the thickness of the upper arc bar is greater than that of the left arc bar.

[0010] In the above-mentioned silencer assembly, the upper arc bar, the lower arc bar, the left arc bar and the right arc bar are all arranged in an arc shape.

[0011] In the above-mentioned silencer assembly, the upper arc bar is recessed toward the lower arc bar, the lower arc bar is recessed toward the upper arc bar, the left arc bar is recessed away from the right arc bar, and the right arc bar is recessed away from the left arc bar.

[0012] In the above-mentioned silencer assembly, the arc length of the upper arc bar is equal to the arc length of the lower arc bar, and the arc length of the left arc bar is equal to the arc length of the right arc bar.

[0013] In the above-mentioned silencer assembly, the central axis of the upper block coincides with the central axis of the lower block.

[0014] A slide rail device, comprising:

[0015] The outer track and the above-mentioned sound-absorbing assembly;

[0016] The inner track is movably arranged on the outer track. A locking mechanism for limiting the movement of the inner track relative to the outer track is arranged in the inner track. The locking mechanism is provided with the muffler assembly.

[0017] In the above-mentioned slide rail device, the locking mechanism includes a pressing rod, which moves through the inner rail. A movable plate is provided at one end of the pressing rod located inside the inner rail, and springs are connected between both ends of the movable plate and the inner rail.

[0018] In the above-mentioned slide rail device, the pressing rod passes through the upper arc bar, upper stop block, lower stop block and lower arc bar of the silencer assembly in sequence, the left arc bar of the silencer assembly presses against a spring adjacent to it, and the right arc bar of the silencer assembly presses against another spring.

[0019] In the above-mentioned slide rail device, a plurality of claws are provided on both sides of the movable plate, a through hole for the claws to pass through is provided on the side of the inner rail, and a plurality of slots for clamping the claws are provided on the outer rail.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. During the first deformation of the left arc bar and the right arc bar of the utility model, due to the gap between the upper and lower blocks, the movable plate is only subjected to the reaction force generated by the bending of the left arc bar and the right arc bar, so that the claws can quickly get into the adjacent slots; when the left arc bar and the right arc bar are deformed for the second time, that is, when the upper and lower blocks begin to contact, the upper arc bar, the lower arc bar, the left arc bar and the right arc bar will deform at the same time, and the reaction force of the silencer assembly on the movable plate will increase, so that the silencer assembly can effectively buffer the movable plate, thereby reducing the impact force between the claws and the inner wall of the slot, thereby achieving the effect of reducing the vibration of the spring of the movable plate caused by the impact force.

[0022] 2. When the left arc bar and the right arc bar undergo the first deformation and the second deformation, the left arc bar and the right arc bar will squeeze the spring due to their own deformation to prevent the spring from trembling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the slide rail device.

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure after removing the outer track.

[0025] Figure 3 yes Figure 2 Schematic diagram of the structure from another perspective.

[0026] Figure 4 yes Figure 3 Section view at AA.

[0027] Figure 5 This is the assembly diagram of the locking mechanism and silencer assembly. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] Embodiment 1

[0030] like Figure 5 As shown, a silencer assembly of the present invention includes an upper arc bar 100 , a lower arc bar 200 , a left arc bar 300 , a right arc bar 400 , an upper stop block 110 , a lower stop block 210 and a gap 500 .

[0031] The lower arc bar 200 is arranged below the upper arc bar 100, one end of the upper arc bar 100 is connected to one end of the lower arc bar 200 through the left arc bar 300, and the other end of the lower arc bar 200 is connected to the other end of the upper arc bar 100 through the right arc bar 400. The middle part of the upper arc bar 100 facing the lower arc bar 200 is provided with an upper stop block 110, and the middle part of the lower arc bar 200 facing the upper arc bar 100 is provided with a lower stop block 210, and a gap 500 is provided between the upper stop block 110 and the lower stop block 210. The thickness of the upper arc bar 100 is the same as that of the lower arc bar 200, the thickness of the left arc bar 300 is the same as that of the right arc bar 400, and the thickness of the upper arc bar 100 is greater than the thickness of the left arc bar 300. The upper arc bar 100, the lower arc bar 200, the left arc bar 300 and the right arc bar 400 are all arranged in an arc shape, the upper arc bar 100 is recessed toward the lower arc bar 200, the lower arc bar 200 is recessed toward the upper arc bar 100, the left arc bar 300 is recessed away from the right arc bar 400, the right arc bar 400 is recessed away from the left arc bar 300, the arc length of the upper arc bar 100 is equal to the arc length of the lower arc bar 200, the arc length of the left arc bar 300 is equal to the arc length of the right arc bar 400, the central axis of the upper stop block 110 coincides with the central axis of the lower stop block 210, wherein the upper arc bar 100, the lower arc bar 200, the left arc bar 300, the right arc bar 400, the upper stop block 110 and the lower stop block 210 are all elastic.

[0032] Embodiment 2

[0033] like Figure 1 — Figure 5 As shown, this embodiment applies the silencer assembly in the first embodiment to the entire slide rail device.

[0034] Specifically, the slide rail device includes: an outer rail 700 and the above-mentioned silencer assembly; an inner rail 600 is movably arranged on the outer rail 700, and the inner rail 600 is provided with a locking mechanism 800 for limiting the movement of the inner rail 600 relative to the outer rail 700, and the locking mechanism 800 is provided with the above-mentioned silencer assembly. When the locking mechanism 800 is locked, that is, when the locking mechanism 800 locks the inner slide rail on the outer rail 700, the silencer assembly will absorb the vibration of the locking mechanism 800, thereby avoiding the locking mechanism 800 from vibrating.

[0035] The locking mechanism 800 includes a pressing rod 810, which moves through the inner track 600. A movable plate 820 is provided at one end of the pressing rod 810 located inside the inner track 600. Springs 830 are connected between both ends of the movable plate 820 and the inner track 600. The pressing rod 810 passes through the upper arc bar 100, the upper stop block 110, the lower stop block 210 and the lower arc bar 200 of the silencer assembly in sequence. The left arc bar 300 of the silencer assembly abuts against a spring 830 adjacent thereto, and the right arc bar 400 of the silencer assembly abuts against another spring 830. A plurality of claws 821 are provided on both sides of the movable plate 820. A through hole 610 is provided on the side of the inner track 600 for the claws 821 to pass through. A plurality of slots 710 for clamping the claws 821 are provided on the outer track 700.

[0036] When the inner track 600 is to be moved relative to the outer track 700, the pressing rod 810 is pressed. Since the pressing rod 810 is connected to the movable plate 820, the movable plate 820 moves downward relative to the inner track 600. Since the claw 821 is fixedly connected to the movable plate 820, the claw 821 moves downward with the movable plate 820. In this way, the claw 821 will be separated from the slot 710 and retracted into the inner part of the outer track 700. At the same time, the spring 830 is stretched and generates elastic force, and the entire silencer assembly is restored to a state without external force, and there is a gap of 500 between the upper block 110 and the lower block 210. After that, the inner track 600 is moved. After a certain period of time, the pressing rod 810 is released. At this time, the movable plate 820 is subjected to the elastic force of the spring 830, and the movable plate 820 moves toward the inside of the inner track 600 until the plurality of claws 821 are stuck in the adjacent slots 710. In this process, the inner wall of the inner track 600 squeezes the upper arc bar 100, and the movable plate 820 squeezes the lower arc bar 200, so that the gap 500 between the upper block 110 and the lower block 210 gradually becomes smaller. At the same time, the bending amplitudes of the left arc bar 300 and the right arc bar 400 gradually increase, and the left arc bar 300 and the right arc bar 400 simultaneously squeeze the respective adjacent springs 830 to prevent The stop spring 830 produces a tremor during the contraction process. At this time, the left arc bar 300 and the right arc bar 400 are deformed for the first time, and when the gap 500 between the upper stop block 110 and the lower stop block 210 disappears, that is, after the upper stop block 110 contacts the lower stop block 210, each claw 821 is just inserted into the corresponding slot 710. After that, the elastic force of the spring 830 continues to exert elastic force on the movable plate 820, and the distance between the movable plate 820 and the inner wall of the inner track 600 continues to decrease. At this time, because the upper stop block 110 is against the lower stop block 210, and the upper arc bar 100 and the lower arc bar 200 are continuously subjected to the movable plate 820 and the inner track 60 0, the extrusion pressure between the upper arc bar 100 and the lower arc bar 200 causes the upper arc bar 100 and the lower arc bar 200 to deform at the same time, that is, the curvature of the upper arc bar 100 and the curvature of the lower arc bar 200 will gradually increase until the upper arc bar 100 and the lower arc bar 200 gradually approach to form a straight line. At the same time, as the distance between the movable plate 820 and the inner wall of the inner track 600 gradually decreases, the bending amplitude of the left arc bar 300 and the right arc bar 400 will continue to increase. At this time, the left arc bar 300 and the right arc bar 400 undergo a second deformation, so that the left arc bar 300 and the right arc bar 400 can provide a greater extrusion force for the spring 830, thereby effectively eliminating the vibrato of the spring 830.

[0037] Furthermore, when the left arc bar 300 and the right arc bar 400 are deformed for the first time, due to the gap 500 between the upper stop block 110 and the lower stop block 210, when the upper arc bar 100 and the lower arc bar 200 are subjected to force, the upper stop block 110 and the lower stop block 210 will preferentially move between the two. Therefore, during the contraction process of the spring 830, or the movement of the movable plate 820 toward the inner wall of the inner track 600, or the movement of the claw 821 toward the corresponding slot 710, it is only subjected to the reaction force generated by the bending of the left arc bar 300 and the right arc bar 400, and the thickness of the upper arc bar 100 is greater than that of the left arc bar 300, so that the reaction force generated by the silencer component in this process is smaller, that is, the movable plate 820 is subjected to a smaller reaction force of the silencer component, so that the claw 821 can be quickly clamped into the adjacent slot 710, and when the left arc bar 300 and the right arc bar 400 are deformed for the second time, the upper arc bar 100 and the lower arc bar 200 are subjected to a gap 500 between the upper stop block 110 and the lower stop block 210. When deformed, at this time, the claw 821 has been inserted into the corresponding slot 710, the upper arc bar 100 and the lower arc bar 200 are deformed, and the left arc bar 300 and the right arc bar 400 are also deformed accordingly, that is, the upper arc bar 100 and the lower arc bar 200 gradually approach to form a straight line, thereby pushing the left arc bar 300 toward the adjacent spring 830, and pushing the right arc bar 400 toward the adjacent spring 830, thereby increasing the distance between the left arc bar 300 and the corresponding spring 830. The extrusion pressure also increases the extrusion pressure between the right arc bar 400 and the spring 830. During this process, the bending amplitude of the left arc bar 300 and the right arc bar 400 will continue to increase due to the extrusion pressure of the movable plate 820. In this way, the middle parts of the left arc bar 300 and the right arc bar 400 will bulge outward more, thereby making the left arc bar 300 and the right arc bar 400 exert a greater force on their respective springs 830, thereby effectively preventing the spring 830 from emitting a vibrating sound during the retraction process.

[0038] Furthermore, the reaction force of the silencer component on the movable plate 820 during the second deformation is generated by the deformation of the left arc bar 300 and the right arc bar 400 and the deformation of the upper arc bar 100 and the lower arc bar 200. The reaction force of the silencer component on the movable plate 820 during the first deformation is generated by the deformation of the left arc bar 300 and the right arc bar 400. Therefore, the reaction force of the silencer component on the movable plate 820 during the second deformation is greater than the reaction force of the silencer component on the movable plate 820 during the first deformation, so that the silencer component can effectively buffer the movable plate 820, thereby reducing the impact force between the claw 821 and the inner wall of the slot 710, thereby achieving the effect of reducing the vibration of the spring 830 caused by the impact force of the movable plate 820 and the vibration of the movable plate 820.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A silencer assembly, characterized in that: include: Upper arc strip; The lower arc bar is arranged below the upper arc bar, one end of the upper arc bar is connected to one end of the lower arc bar through a left arc bar, the other end of the lower arc bar is connected to the other end of the upper arc bar through a right arc bar, an upper stop block is provided in the middle of the upper arc bar facing the lower arc bar, and a lower stop block is provided in the middle of the lower arc bar facing the upper arc bar, and there is a gap between the upper stop block and the lower stop block.

2. A sound-absorbing component according to claim 1, characterized in that: The thickness of the upper arc bar is the same as that of the lower arc bar, the thickness of the left arc bar is the same as that of the right arc bar, and the thickness of the upper arc bar is greater than that of the left arc bar.

3. A sound-absorbing component according to claim 1, characterized in that: The upper arc bar, the lower arc bar, the left arc bar and the right arc bar are all arranged in an arc shape.

4. A sound-absorbing component according to claim 1, characterized in that: The upper arc bar is recessed toward the lower arc bar, the lower arc bar is recessed toward the upper arc bar, the left arc bar is recessed toward the direction away from the right arc bar, and the right arc bar is recessed toward the direction away from the left arc bar.

5. A sound-absorbing component according to claim 1, characterized in that: The arc length of the upper arc bar is equal to the arc length of the lower arc bar, and the arc length of the left arc bar is equal to the arc length of the right arc bar.

6. A sound-absorbing component according to claim 1, characterized in that: The central axis of the upper stop block coincides with the central axis of the lower stop block.

7. A slide rail device, characterized in that: include: An outer rail and a sound-absorbing assembly as claimed in any one of claims 1 to 6; The inner track is movably arranged on the outer track. A locking mechanism for limiting the movement of the inner track relative to the outer track is arranged in the inner track. The locking mechanism is provided with the muffler assembly.

8. A slide rail device according to claim 7, characterized in that: The locking mechanism comprises a pressing rod, which moves through the inner track. A movable plate is provided at one end of the pressing rod located inside the inner track, and springs are connected between both ends of the movable plate and the inner track.

9. A slide rail device according to claim 8, characterized in that: The pressing rod passes through the upper arc bar, the upper abutment block, the lower abutment block and the lower arc bar of the silencer assembly in sequence, the left arc bar of the silencer assembly abuts against a spring adjacent thereto, and the right arc bar of the silencer assembly abuts against another spring.

10. A slide rail device according to claim 8 or 9, characterized in that: A plurality of claws are arranged on both sides of the movable plate, a through hole for the claws to pass through is arranged on the side of the inner track, and a plurality of slots for clamping the claws are arranged on the outer track.

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