A polyurethane spring slider type limiter

Abstract

The present invention discloses a polyurethane spring slider type limiter, including a limiter pull rod, a limiter cover, a fixed cover plate, a fixed bracket, and a stopper; one end of the limiter pull rod is rotatably connected to the fixed bracket, and the other end is connected to the stopper; the fixed cover plate and the limiter cover are buckled to form a box-shaped body with a cavity inside, and two groups of polyurethane slider springs and two I-shaped slider fixing seats are symmetrically installed in the inner cavity of the limiter cover; the limiter pull rod passes through the box-shaped body and between the two slider fixing seats in the box-shaped body, and slides with the two slider fixing seats. The present invention not only improves the overall service life of the door limiter accordingly, but also greatly improves the smoothness of the door opening; it also improves the comfort of the closing energy and the hand feel quality of the limiter during the opening process, avoiding the disadvantages of the conventional limiter slider shrinking and hardening in winter and the poor aging of rubber over a long period of time, thereby improving the quality of the vehicle door system.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing, and more particularly to a polyurethane spring slider type limiter. Background Art

[0002] With the continuous improvement of domestic and foreign automobile industry technology, consumers' requirements for automobiles are getting higher and higher, and the sensory experience of car doors is becoming more and more prominent among user groups. In recent years, domestic automobile companies have gradually begun to pay attention to the energy comfort and texture of opening and closing car doors.

[0003] The sliders in conventional door stoppers are generally rubber sliders, which are prone to aging and cause the door to not open properly. In addition, the existing door stoppers also have problems such as short overall service life and poor door opening smoothness.

[0004] Therefore, how to effectively overcome the above-mentioned technical defects is an important direction that technical personnel in this field need to study. Summary of the invention

[0005] To this end, the purpose of the present invention is to provide a polyurethane spring slider type limiter to effectively avoid the occurrence of the above problems, and its specific technical solution is as follows:

[0006] A polyurethane spring slider limiter, comprising a limiter pull rod, a limit cover shell, a fixed cover plate, a fixed bracket and a block; the fixed bracket is fixed to the vehicle body, and the limit cover shell and the fixed cover plate are fixed to the vehicle door together; one end of the limiter pull rod is rotatably connected to the fixed bracket through a limit rivet, and the other end is connected to the block; the fixed cover plate and the limit cover shell are buckled to form a box-shaped body with a cavity inside, and two groups of polyurethane slider springs and two I-shaped slider fixing seats are symmetrically installed in the inner cavity of the limit cover shell, the two slider fixing seats are connected to each other and are located in the middle position of the inner cavity of the limit cover shell, and the two polyurethane sliders are connected to each other and are located in the middle position of the inner cavity of the limit cover shell. The springs are arranged at the two ends of the two corresponding slider fixing seats, and the slider fixing seats can move in the inner cavity of the limit cover; the limiter pull rod passes through the box-shaped body and the two slider fixing seats in the box-shaped body, and slides with the two slider fixing seats; the limiter pull rod and the box-shaped body and the slider fixing seat can achieve relative movement; one end of the polyurethane slider spring is clamped with a side of the slider fixing seat away from the limiter pull rod, and the other end is pressed against the inner wall of the limit cover; the fixed cover plate is located on the side close to the fixed bracket, and the limit cover is located on the side close to the stop block.

[0007] The present invention adopts a structure in which a polyurethane slider spring is matched with a slider fixing seat. The polyurethane slider spring provides pressure and energy storage, and the slider fixing seat is in sliding and frictional contact with the outer peripheral surface of the limiter pull rod. The polyurethane slider spring has unique characteristics such as high strength, good resilience, small compression permanent deformation, good cushioning, good low-temperature performance, wear resistance, oil resistance, oxygen resistance, and long service life, which not only improves the overall service life of the door limiter accordingly, but also greatly improves the smoothness of door opening. At the same time, through the use of the polyurethane slider spring, the present invention also improves the energy comfort and hand feel quality of the limiter during the opening process, avoiding the disadvantages of the conventional limiter slider shrinking and hardening in winter and the poor rubber aging over a long period of time, thereby improving the quality of the entire vehicle door system.

[0008] On the basis of the above technical solution, the present invention can also make the following improvements:

[0009] Preferably, the slider fixing seat is provided with convex strips on the two side ends in contact with the inner cavity of the limit cover shell, and a gear slot is provided at the corresponding position on the inner cavity of the limit cover shell, and the convex strip cooperates with the gear slot to form a multi-stage limit for the slider fixing seat to move in the limit cover shell.

[0010] Preferably, a connecting plate extends horizontally outward from each side of the limiting cover shell, and a first connecting hole is provided on the connecting plate; second connecting holes are provided at corresponding positions on both sides of the fixed cover plate; the limiting cover shell and the fixed cover plate are connected together by bolts passing through the first connecting hole and the second connecting hole, and are further fixed to the door pillars of the vehicle door by the bolts and corresponding matching nuts.

[0011] Preferably, the fixed cover plate and the limiting cover shell are further connected by riveting to ensure complete locking between the fixed cover plate and the limiting cover shell.

[0012] Preferably, the limiter pull rod passes a limit pin through its end portion to limit and fix the stopper thereon.

[0013] Preferably, the block is a polyurethane buffer block.

[0014] The present invention further designs the block as a polyurethane buffer block, which not only plays a corresponding buffering and shock-absorbing role, so that the block and the fixed cover plate will not be damaged due to excessive impact force when in contact, especially the fixed cover plate. At the same time, the buffer block made of polyurethane material ensures the stability of the block and extends its service life.

[0015] Preferably, the polyurethane slider spring can further be selected from a high-density polyurethane slider spring with better performance.

[0016] Preferably, the slider fixing seat is a slider fixing seat with a low friction coefficient.

[0017] The slider fixing seat of the present invention has excellent wear resistance and friction reduction, and the surface has high hardness, high impact resistance and low friction coefficient, so as to improve working stability and extend its service life.

[0018] Through the above technical scheme, it can be known that compared with the prior art, the polyurethane spring slider limiter of the present invention innovatively applies a high-density polyurethane slider spring to the door limiter, replacing the ordinary rubber spring and metal spring, which not only improves the overall service life of the door limiter accordingly, but also greatly improves the smoothness of door opening, and improves the energy comfort and hand feel quality of the limiter during the opening process, avoids the disadvantages of the rubber slider of the conventional limiter shrinking and hardening in winter and the poor aging of the rubber for a long time, and improves the quality of the whole vehicle door system; at the same time, it overcomes the defects of metal springs that need to undergo rust prevention treatment, salt spray corrosion test, and lubricating oil application before use, which is time-consuming and labor-intensive, and is prone to the defects of high friction coefficient and high noise during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 The accompanying drawing is a schematic diagram of the overall assembly of the present invention.

[0021] Figure 2 The accompanying drawing is a front view of the present invention.

[0022] Figure 3 The attached figure is Figure 2 Cross-sectional view along the AA direction.

[0023] Figure 4 The accompanying drawing is a schematic diagram of the assembly of two sets of high-density polyurethane slider springs and two I-shaped slider fixing seats in the present invention.

[0024] Figure 5 The accompanying drawing is a completed assembly diagram of two sets of high-density polyurethane slider springs and two I-shaped slider fixing seats in the present invention.

[0025] Among them, in the figure,

[0026] 1-limiter pull rod, 2-limiting cover, 3-fixed cover plate, 4-fixed bracket, 5-stopper, 6-limiting rivet, 7-polyurethane slider spring, 8-slider fixing seat, 9-convex strip, 10-connecting plate, 11-first connecting hole, 12-second connecting hole, 13-nut, 14-limiting pin. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] Example:

[0033] According to the following Figure 1-5 A polyurethane spring slider type limiter according to an embodiment of the present invention is described in detail.

[0034] like Figure 1-3 As shown, an embodiment of the present invention discloses a polyurethane spring slider type limiter, comprising a limiter pull rod 1, a limit cover 2, a fixed cover plate 3, a fixed bracket 4 and a stopper 5.

[0035] Specifically,

[0036] The fixing bracket 4 is fixed on the vehicle body, and the limiting cover 2 and the fixing cover plate 3 are fixed on the vehicle door together; one end of the limiter pull rod 1 is rotatably connected to the fixing bracket 4 through a limiting rivet 6, and the other end is connected to the stopper 5.

[0037] like Figure 1 , 2 As shown in Figures 4 and 5, the fixed cover plate 3 is buckled with the limiting cover shell 2 to form a box-shaped body with a cavity inside. Two groups of polyurethane slider springs 7 and two I-shaped slider fixing seats 8 are symmetrically installed in the inner cavity of the limiting cover shell 2. The two slider fixing seats 8 are connected to each other and are located in the middle position of the inner cavity of the limiting cover shell 2. The two polyurethane slider springs 7 are rectangular and are respectively arranged at the two ends of the two connected slider fixing seats 8. The slider fixing seats 8 can move in the inner cavity of the limiting cover shell 2.

[0038] The limiter pull rod 1 passes through the box-shaped body and the two slider fixing seats 8 in the box-shaped body, and slides with the two slider fixing seats 8; the limiter pull rod 1 and the box-shaped body and the slider fixing seat 8 can realize relative movement; one end of the polyurethane slider spring 7 is clamped with the side of the slider fixing seat 8 away from the limiter pull rod 1 to ensure that it is not easy to fall off, and the other end is pressed against the inner wall of the limit cover shell 2.

[0039] The fixed cover plate 3 is located on a side close to the fixed bracket 4 , and the limiting cover shell 2 is located on a side close to the stopper 5 .

[0040] In order to further optimize the technical solution of the above embodiment, the slider fixing seat 8 is provided with a convex strip 9 on the two side ends in contact with the inner cavity of the limiting cover shell 2, and a gear slot is provided at the corresponding position on the inner cavity of the limiting cover shell 2. The convex strip 9 cooperates with the gear slot to form a multi-speed limit for the slider fixing seat 8 to move in the limiting cover shell 2.

[0041] In order to further optimize the technical solution of the above embodiment, a connecting plate 10 is horizontally extended outward from both sides of the limiting cover 2, and a first connecting hole 11 is opened on the connecting plate 10; second connecting holes 12 are opened at corresponding positions on both sides of the fixed cover plate 3; the limiting cover 2 and the fixed cover plate 3 are connected together by bolts passing through the first connecting hole 11 and the second connecting hole 12, and are further fixed to the door pillar of the vehicle door by the bolts and the corresponding matching nuts 13.

[0042] In order to further optimize the technical solution of the above embodiment, the fixed cover plate 3 and the limiting cover shell 2 are further connected by riveting.

[0043] In order to further optimize the technical solution of the above embodiment, the limiter pull rod 1 passes a limit pin 14 through its end to limit and fix the stopper 5 thereon.

[0044] In order to further optimize the technical solution of the above embodiment, the stopper 5 is preferably a polyurethane buffer stopper.

[0045] In order to further optimize the technical solution of the above embodiment, the polyurethane slider spring 7 preferably uses a high-density polyurethane slider spring.

[0046] In order to further optimize the technical solution of the above embodiment, the slider fixing seat 8 is selected to have a low friction coefficient.

[0047] The specific assembly process of the present invention is:

[0048] 1) Assemble the polyurethane slider spring 7 and the slider fixing seat 8 first, then install the polyurethane slider spring 7 and the slider fixing seat 8 assembly into the inner cavity of the limit cover 2, then buckle the fixed cover plate 3 with the limit cover 2, connect and fix the fixed cover plate 3 with the limit cover 2 by bolts and nuts 13, and then further connect the fixed cover plate 3 with the limit cover 2 by riveting to form a limit box assembly;

[0049] 2) The limiter pull rod 1 is passed through the square hole on the stopper 5, and the stopper 5 is restricted and fixed to the end of the limiter pull rod 1 by a limit pin 14 to form a limiter pull rod assembly; then, the limiter pull rod assembly is passed through the above-mentioned limit box assembly;

[0050] 3) Pass the rivets through the circular holes on the fixing bracket 4 and the stopper pull rod 1 to connect the two by riveting.

[0051] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A polyurethane spring slider type limiter, comprising a limiter pull rod (1), a limiter cover (2), a fixed cover plate (3), a fixed bracket (4) and a stopper (5); the fixed bracket (4) is fixed on the vehicle body, and the limiter cover (2) and the fixed cover plate (3) are fixed on the vehicle door together; characterized in that: One end of the limiter pull rod (1) is rotatably connected to the fixed bracket (4) through a limit rivet (6), and the other end is connected to the stopper (5); the fixed cover plate (3) and the limit cover shell (2) are buckled to form a box-shaped body with a cavity inside, and two groups of polyurethane slider springs (7) and two I-shaped slider fixing seats (8) are symmetrically installed in the inner cavity of the limit cover shell (2), and the two slider fixing seats (8) are connected to each other and located in the middle position of the inner cavity of the limit cover shell (2). The two polyurethane slider springs (7) are respectively arranged at the two ends of the two connected slider fixing seats (8), and the slider fixing seats (8) can be moved in the inner cavity of the limit cover shell (2); the limiter pull rod (1) passes through the box-shaped body and between the two slider fixing seats (8) in the box-shaped body, and is connected to the two slider fixing seats (8). Sliding fit; the limiter pull rod (1) and the box-shaped body and the slider fixing seat (8) can achieve relative movement; one end of the polyurethane slider spring (7) is clamped with a side of the slider fixing seat (8) away from the limiter pull rod (1), and the other end is pressed against the inner wall of the limit cover (2); the fixed cover plate (3) is located on the side close to the fixed bracket (4), and the limit cover (2) is located on the side close to the block (5); the slider fixing seat (8) is provided with convex strips (9) on the two side ends in contact with the inner cavity of the limit cover (2), and the corresponding position on the inner cavity of the limit cover (2) is provided with a gear slot, and the convex strip (9) cooperates with the gear slot to form a multi-stage limit for the slider fixing seat (8) to move in the limit cover (2); the slider fixing seat (8) is a slider fixing seat with a low friction coefficient.

2. A polyurethane spring slider type limiter according to claim 1, characterized in that: A connecting plate (10) is horizontally extended outward from each of the two sides of the limiting cover (2), and a first connecting hole (11) is provided on the connecting plate (10); second connecting holes (12) are provided at corresponding positions on both sides of the fixing cover (3); the limiting cover (2) and the fixing cover (3) are connected together by bolts passing through the first connecting hole (11) and the second connecting hole (12), and are further fixed to the door pillar of the vehicle door by the bolts and corresponding matching nuts (13).

3. A polyurethane spring slider type limiter according to claim 2, characterized in that: The fixed cover plate (3) and the limiting cover shell (2) are further connected by riveting.

4. The polyurethane spring slider type limiter according to claim 1, characterized in that: The limiter pull rod (1) passes a limit pin (14) through its end to limit and fix the stopper (5) thereon.

5. A polyurethane spring slider type limiter according to claim 1 or 4, characterized in that: The stopper (5) is a polyurethane buffer stopper.

6. The polyurethane spring slider type limiter according to claim 1, characterized in that: The polyurethane slider spring (7) is a high-density polyurethane slider spring.

Images