Vehicle door opening degree limiter

Abstract

The utility model provides a vehicle door opening degree limiting device, in the vehicle door opening degree limiting device with the casing of resin preparation improves the rigidity of casing and miniaturization. In order to restrain the width of casing's left and right direction and improve the rigidity of casing, the width of left and right direction of opening part is less than the width of up and down direction of opening part. The width of left and right direction of arm's middle part is less than the width of left and right direction of casing's opening part, in order to make the strength of surrounding of pivot axle firm, the diameter of arm's axle part is greater than the width of left and right direction of opening part. The width of left and right direction of casing's opening part is greater than the width of up and down direction of arm's axle part. The thin wall part is in the position of arm's close axle part, in this thin wall part, the width of up and down direction of stop face is the thin thickness that arm can rotate in casing opening part, this part functions as the rotating part that makes arm rotate relative to casing and becomes the state that stop face is towards up and down direction, can insert arm into the opening part of casing.

Description

Technical Field

[0001] This utility model relates to a vehicle door opening limit device, and in particular to a vehicle door opening limit device having a resin housing. Background Technology

[0002] A vehicle door opening limiter includes: an arm, one end of which is pivotally connected to the vehicle body and the other end of which has a fully open stop; a housing fixed to either the vehicle door or the vehicle body; and a slide housed within the housing, which slides along the arm as the door opens and closes. In this door opening limiter, as the door opens and closes, the slide slides on the stop surface of the arm, thereby applying a predetermined limiting force to the opening and closing action of the door. The arm is formed by covering the entire outer surface of a single sheet of steel with a layer of synthetic resin.

[0003] Patent Document 1 describes a vehicle door opening limit device comprising: a link, one end of which is rotatably supported on the vehicle body via a pivot, and the other end of which is provided with a full-opening stop; a synthetic resin housing and a synthetic resin cover, which are fixed to the door and are inserted through the link in a manner that allows it to move along the length of the link as the door opens and closes; and a synthetic resin slipper that can slide on a stop surface provided on the surface of the link. The link is formed by covering the entire surface of a metal core material with a synthetic resin coating material. With the width of the stop surface of the link in the left-right direction set to W2 and the width between the left and right guide portions set to W3, the relationship is set such that W2 ≤ W3. The core material of the link is formed with its plate surface facing horizontally and its length direction facing forward-backward, and a wider portion in the left-right direction is provided at the top end where the full-opening stop is provided. The synthetic resin housing and the synthetic resin cover are joined together. This enables the lightweighting of the housing itself and even the door opening limit device used in vehicles.

[0004] Patent Document 2 describes a vehicle door opening limiting device comprising: a limiting rod having a boss at one end that is freely movable and connected to a bracket fixed to the vehicle body, and a fully opening stop at the other end; a housing having a through hole through which the limiting rod passes and being fixed to the door; and slippers housed in the housing and slidingly contacting the stop surfaces of the limiting rod. The slippers have a pair of guide walls integrally formed thereon that slide in contact with the two sides of the stop surface of the limiting rod arranged in the lateral direction. The fully opening stop is integrally formed without separating from the limiting rod. Furthermore, the boss of the limiting rod is configured to pass through the through hole of the housing and between the pair of slippers. The limiting rod is composed of a steel core plate and a synthetic resin outer skin molded to the periphery of the core plate.

[0005] According to the invention described in Patent Document 2, the conventional installation process of the fully open stop to the limiting rod after the limiting rod is inserted into the housing can be eliminated, reducing assembly time and contributing to lower manufacturing costs. Furthermore, a pair of expansion portions are formed on the axial end faces of the boss, allowing passage between a pair of guide walls of the sliding shoes within the housing. As these expansion portions pass between the guide walls, the outer periphery of the boss can pass between the pair of sliding shoes. That is, although the diameter of the boss on the limiting rod is larger than the lateral width of the stop surface, by utilizing the expansion portions of the boss to expand between the pair of sliding shoes, the boss can pass between the two sliding shoes without interfering with the guide walls of each sliding shoe within the housing, thereby enabling unobstructed assembly of the door opening limiting device.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent No. 6911261

[0009] Patent Document 2: Japanese Patent No. 3935063 Utility Model Content

[0010] Problems to be solved by utility models

[0011] In vehicle door opening limiters, the housing and other components require a specified strength to ensure smooth door opening and closing and to guarantee durability. Furthermore, since the door opening limiter is installed in the narrow space of the door and body, it needs to be miniaturized and lightweight. In particular, compared to the vertical direction of the door, there is less space available in the width direction of the door (the horizontal direction of the opening in the housing), therefore, a narrow horizontal width of the opening in the housing is preferable.

[0012] In the door opening limiting device described in Patent Document 1, the plate surface of the wide connecting rod (equivalent to the arm of this utility model, hereinafter referred to as the arm) faces the horizontal direction. Therefore, in order to form the arm so that it can be inserted into the opening of the housing (between the left and right guide portions), the opening and the plate surface are correspondingly wide. Moreover, a shaft hole for inserting a pivot is provided at one end of the arm. However, in order to strengthen the area around the pivot, it is necessary to thicken the pivot and also increase the size of the shaft hole, that is, to increase the size of the shaft. Considering these factors, there is a problem that the arm becomes larger in the left-right direction, and the opening of the housing and even the vehicle door opening limiting device become larger in the horizontal direction (left-right direction).

[0013] Furthermore, in the vehicle door opening limiting device described in Patent Document 2, the sliding shoe inside the housing is retracted vertically by utilizing the wedge-shaped portion and the expansion portion of the limiting rod (equivalent to the arm of this utility model), thereby allowing the wider side protrusion of the arm to pass through for assembly. However, in order to allow the side protrusion of the arm to pass through, the opening of the through hole in the housing is enlarged overall, including in the horizontal direction (left-right direction).

[0014] When using resin instead of metal to form the housing of the door opening limit device, it is preferable to further reduce the size of the opening of the housing in order to improve the rigidity of the housing.

[0015] In view of the above-mentioned problems in the prior art, one problem of this utility model is to provide a door opening limit device. The housing of the door opening limit device is made of resin. By narrowing the width of the opening in the horizontal direction (left-right direction) of the housing, the opening of the housing is reduced and the rigidity of the housing is increased, thereby achieving miniaturization.

[0016] Another objective of this invention is to provide a door opening limit device that reduces costs.

[0017] Another objective of this invention is to provide a door opening limit device that improves product quality and ensures stable operation over a long period.

[0018] Solution for solving the problem

[0019] To address the aforementioned issues, this utility model provides a vehicle door opening limit device. This device comprises: a synthetic resin housing with a mounting portion fixed to either the door or the vehicle body; an arm extending through an opening and a through-space of the housing, with a shaft at one end flexibly connected to the other of the door and the vehicle body; and a full-opening stop member disposed at the other end of the arm, which restricts the full-opening position of the door by abutting against a contact surface located on the opening surface of the housing. The arm has a middle portion disposed between the shaft and the other end, and has a stop surface with concave and convex shapes in the vertical direction, retracting within the housing. The housing includes: a sliding shoe that slides on the vertical surface of the stop surface of the arm; a spring that applies force to the sliding shoe; and a stop plate that holds the spring within the housing, the housing having an opening on the opening surface that opens in a direction parallel to the mounting portion, the lateral width of the middle portion of the arm being smaller than the lateral width of the opening of the housing, the lateral direction being orthogonal to the forward and backward direction of the arm, the vertical width of the opening of the housing being greater than the lateral width of the opening, and the lateral width of the opening being greater than the vertical width of the shaft portion of the arm.

[0020] According to this utility model, a door opening limiting device can be provided. In a vehicle door opening limiting device with a resin housing, the width of the opening in the horizontal direction (left-right direction) of the housing can be narrowed, thereby improving rigidity and achieving miniaturization.

[0021] According to a technical solution of this utility model, the width of the shaft portion of the arm in the left-right direction is larger than the width of the opening portion in the left-right direction. Therefore, by increasing the circumference of the shaft portion of the arm, the arm can be firmly supported, providing a door opening limit device that operates stably over a long period.

[0022] According to a technical solution of this utility model, the arm has a thin-walled portion near the shaft. In this thin-walled portion, the width of the stop surface in the vertical direction is such that the arm can rotate within the opening of the housing. The thin-walled portion functions as a rotating part that allows the arm to rotate relative to the housing so that the stop surface faces in the vertical direction. This reduces the opening of the synthetic resin housing, ensures strength, and enables miniaturization of the door opening limit device.

[0023] According to a technical solution of this utility model, when the opening surface is viewed from the front, the door opening limiting device is vertically symmetrical and / or horizontally symmetrical with the center of the opening portion of the housing as the boundary. Therefore, there is no orientation in any direction (up, down, left, or right), thus eliminating the need to select the left or right door, enabling component commonality, reducing the risk of assembly errors, and thus contributing to cost reduction of the door opening limiting device.

[0024] According to a technical solution of this utility model, the housing has a guide portion integral with the housing at a position near the opening of the insertion space. The guide portion slides in contact with the arm when the door is opened or closed. The width of the guide portion's left-right opening inside the housing gradually narrows from the opening surface toward the housing surface facing the opening surface. Since the guide portion is integrally formed with the housing without other components, the cost can be reduced by decreasing the number of components, and the strength can be improved due to the increased wall thickness of the synthetic resin housing.

[0025] According to a technical solution of this utility model, the housing has a mounting surface for mounting on either the door or the body, and the mounting surface is formed such that its width in the left-right direction is wider than the width of the opening surface. Therefore, by maximizing the mounting surface of the housing, the load on the door or body can be further released, providing a door opening limit device that operates stably over a long period.

[0026] According to a technical solution of this utility model, the housing includes a cylindrical portion having receiving portions for respectively accommodating the sliding shoe and the spring. The outer circumferential surface of the sliding shoe has a convex portion extending axially along the spring, and the inner circumferential surface of the receiving portion has a concave portion extending axially along the spring. The convex portion and the concave portion can engage. Therefore, the door can be stopped at the correct position, thus providing a door opening limiting device that inhibits wear on the sliding shoe and ensures long-term stable operation.

[0027] According to a technical solution of this utility model, the vehicle door opening limiting device has a buffer member disposed adjacent to the fully open stop member of the arm. The opening surface and the buffer member abut against each other when the door is fully open, and a protrusion is provided on the side of the buffer member that abuts against the opening surface. Therefore, a door opening limiting device can be provided that can operate stably for a long period of time and can reduce the pressing sound generated when moving in the closing direction, thereby improving product quality.

[0028] Utility Model Effect

[0029] According to this utility model, a vehicle door opening limit device can be provided. In a vehicle door opening limit device with a resin housing, the width of the opening in the horizontal direction (left-right direction) of the housing can be narrowed, thereby improving rigidity and achieving miniaturization. Attached Figure Description

[0030] Figure 1 This is a perspective view of a vehicle door opening limit device with a resin housing according to an embodiment of the present invention.

[0031] Figure 2 yes Figure 1 An exploded perspective view of the door opening limit device.

[0032] Figure 3 This is a front view of the housing of the door opening limit device.

[0033] Figure 4 This is a three-dimensional view of the casing from the rear side.

[0034] Figure 5 This is a top view of the arm in the door opening limit device.

[0035] Figure 6 This is a side view of the arm in the door opening limit device.

[0036] Figure 7 This diagram shows the relationship between the arm and the opening of the housing in the assembled state with the arm rotated 90 degrees.

[0037] Figure 8 It means to make the arm from Figure 7The diagram shows the relationship between the arm and the opening of the shell when the state is reversed by 90 degrees to return to the original posture.

[0038] Figure 9 This is a three-dimensional view of the cover that does not show the front surface of the housing in the door opening limit device.

[0039] Figure 10 This is a top view of the door opening limit device.

[0040] Figure 11 It is a magnified three-dimensional view of the cross-section of the housing of the guide section.

[0041] Figure 12 The purpose is to show the relationship between the slipper and the spring inside the housing without displaying a three-dimensional view of the housing.

[0042] Figure 13 This is a top view taken to show the relationship between the slipper and the spring inside the housing without displaying the stop plate and to view the housing from above.

[0043] Figure 14 This is a perspective view of the door opening limit device, showing the contact surface of the fully open stop.

[0044] Figure 15 This is a side view showing details of the fully open stop section of the arm.

[0045] Explanation of reference numerals in the attached figures

[0046] 1. Door opening limit device; 2. Arm; 2A. Steel plate; 2B. Hook; 21. Pivot shaft; 22. Shaft; 23. Middle part; 24. Stop surface; 25. Thin-walled part (rotating part); 26. Anti-detachment part; 3. Housing; 30. Main body; 31. Storage part; 32. Insertion space; 33. First opening; 34. Closing member; 35. Second opening; 36. Opening surface (abutment surface) of the housing; 37. Side wall; 38. Mounting surface; 39. Guide part; 310. Concave part; 4. Full-opening stop; 5. Slipper; 51. Protruding part; 6. Spring; 7. Stop plate; 10. Bolt; 11. Bracket; 12. Buffer member; 120. Protruding part. Detailed Implementation

[0047] Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

[0048] Figure 1 This is a perspective view of a door opening limiting device (hereinafter referred to as the door opening limiting device) with a resin housing according to the first embodiment of this utility model. Figure 2 This is an exploded 3D view of the door opening limit device. Figures 3-4 This describes the detailed structure of the housing of the door opening limit device.

[0049] The door opening limit device 1 includes: a housing 3 made of synthetic resin, which is fixed to either the vehicle door or the vehicle body; and an arm 2, one end of which is flexibly connected to the other of the vehicle door and the vehicle body. The housing 3 is a component formed by integrating a box-shaped main body 30 made of synthetic resin and a rubber plate-shaped closing member 34.

[0050] Furthermore, the following describes an example of the housing 3 being fixed to the vehicle door, and one end of the arm being fixed to the vehicle body.

[0051] A shaft portion 22 is provided at one end of the arm 2. This shaft portion 22 has a shaft hole for inserting a pivot shaft 21. The arm 2 is rotatably held in place of the vehicle body via the pivot shaft 21 inserted into the shaft hole of the shaft portion 22 and the bracket 11. The other end of the arm 2 is configured as a fully open stop 4. The fully open stop 4 abuts against the housing 3 at the opening surface 36 (see reference). Figure 3 The opening 36 is formed on the side opposite to the closing member 34 to limit the fully open position of the door.

[0052] Furthermore, the arm 2 has an intermediate portion 23 between a shaft portion 22 located at one end and a fully open stop member 4 formed at the other end. A stop surface 24 extending in the longitudinal direction (the forward and backward direction) of the arm 2 and having irregularities in the vertical direction is provided in this intermediate portion 23. This stop surface 24, by alternately providing protrusions and recesses along the length direction (forward and backward direction) of the arm, provides a limiting force (resistance) to the opening and closing action of the door D. One end of the arm 2, the shaft portion 22, penetrates the insertion space 32 within the housing 3 via a rectangular first opening 33 located at the center of the opening surface 36 of the housing 3, and then extends to the outside of the housing 3 via a rectangular second opening 35 of the closing member 34 of the housing 3. A guide portion 39 (see reference 39) is provided near the first opening 33 of the insertion space 32. Figure 11 The second opening 35 of the sealing member 34 is narrower in the vertical direction than the first opening 33, so that the rubber sealing member 34 fits tightly against the outer surface of the arm 2 and slides in contact with the stop surface of the arm, thereby preventing debris and water accumulated in the mounting opening, on the arm, from entering the housing 3. Slits 341 are provided at the top and bottom of the left and right ends of the second opening 35, allowing the arm 2 to pass through. Alternatively, the size of the second opening 35 can be the same as the size of the first opening 33. Hereinafter, unless there is a specific distinction between the first and second openings, it will simply be referred to as the opening.

[0053] The main body 30 of the housing 3 has upper and lower storage portions 31 for accommodating the sliding shoes 5 and the springs 6. A pair of sliding shoes 5, a pair of springs 6, and a pair of stop plates 7 (see reference) are housed within these storage portions 31. Figure 2A metal stop plate 7 holds the spring 6 in a compressed state within the main body 30 of the housing 3, and the spring 6 exerts force on the surface of the slide 5 toward the stop surface 24 of the arm 2. Thus, the slide 5 is configured to slide on the surface of the stop surface 24 of the arm 2 in conjunction with the opening and closing of the door.

[0054] like Figure 3 As shown, when the first opening 33 of the housing 3 is viewed from the front, the door opening limiting device 1 of this utility model is vertically symmetrical and / or horizontally symmetrical, with the longitudinal line segment AA passing through the center of the opening 33, i.e., the center O1 of the main body 30, and the transverse line segment BB as boundaries. Thus, the door opening limiting device 1 has no orientation in any direction (up, down, left, or right), does not select the left or right door, and therefore enables component commonality and reduces the risk of assembly errors, thereby contributing to cost reduction. Furthermore, since the housing 3 is integrally formed without being divided, the strength of the housing 3 can be improved.

[0055] Figure 4 This is a perspective view of the housing 3 from the rear side. To show the relative positions of the sliding shoe 5, a pair of springs 6, and the stop plate 7 inside the housing 3, the closing member 34 is omitted. The housing 3 is made of synthetic resin and has a box-shaped appearance, that is, a roughly quadrangular prism shape. The main body 30 has an opening surface 36 that functions as a contact surface against the fully open stop member 4, left and right side walls 37, and a mounting surface 38 on the opposite side of the opening surface 36 that is used for mounting to the vehicle door. This mounting surface 38 is fixed to the vehicle door by two bolts 10. The bolts 10 are fixed to the upper and lower parts of the closing member 34 with the bolt heads embedded. The closing member 34 is fixed to the mounting surface 38 of the housing 3 for mounting to the vehicle door.

[0056] then, Figure 5 This is a top view of arm 2. Figure 6 This is a side view of arm 2.

[0057] Arm 2 is constructed by coating the surface of a rigid metal component, such as a single steel plate 2A, with a layer of synthetic resin. The steel plate 2A is formed with its length oriented in the front-to-back direction, and a hook 2B is provided at the rear end where the fully open stop 4 is located. This hook 2B is twisted 90 degrees by a torsion process (twisting process) so that the plate surface changes from a horizontal to a vertical direction. This hook 2B is shown in side view (refer to...). Figure 6 When it is in a roughly horizontal T-shape, the vertical dimension is at least larger than the vertical opening height of the first opening 33 provided in the housing 3.

[0058] like Figure 5As shown, the shaft portion 22, which is one end of the arm 2, is a flat circular shape, and its diameter is defined as δ. In addition, the width of the middle portion 23 of the arm 2 in the left-right direction (the direction orthogonal to the forward and backward direction of the arm 2) is constant, and this width (length) is defined as γ.

[0059] And, as Figure 6 As shown, the vertical width of the shaft portion 22 of arm 2 is defined as ε. At one end of arm 2, between the shaft portion 22 and the intermediate portion 23, near one end, there is a thin-walled portion 25 whose vertical width of the stop surface 24 is narrower than the vertical width ε of the shaft portion 22. This thin-walled portion 25 has a thickness sufficient to allow arm 2 to rotate within the opening 33 and insertion space 32 of housing 3. After arm 2 is inserted into the opening 33 and insertion space 32, it functions as a rotating portion that allows arm 2 to rotate relative to housing 3 so that the stop surface faces vertically.

[0060] Here, the width of the rectangular first opening 33 of the housing 3 in the left-right direction is defined as α, and the width in the up-down direction is defined as β.

[0061] The width of arm 2 has the following relationship with the first opening 33 of housing 3.

[0062] First, the width α of the first opening 33 in the left-right direction, the diameter δ of the shaft portion 22 of the arm 2, and the width γ of the middle portion 23 of the arm 2 in the left-right direction have the following relationship (1).

[0063] γ<α<δ (1)

[0064] In addition, the width α in the left-right direction of the first opening 33, the width β in the up-down direction, the width ε in the up-down direction of the shaft 22, and the diameter δ of the shaft 22 have the following relationships (2) and (3).

[0065] α>ε (2)

[0066] β>δ (3)

[0067] Next, the assembly of the arm and the housing will be explained. Figure 7 This is a front view of the housing showing the relationship between the arm and the opening of the housing in the assembled state with the arm rotated 90 degrees. Figure 8 It means to make the arm from Figure 7 The front view of the shell shows the relationship between the arm and the opening, with the arm reversed 90 degrees to its original posture. Figures 7-8 Only the narrowest dimension of the first opening 33 is shown in the illustration.

[0068] When the door opening limit device 1 is in use, that is, when the stop surface 24 of the arm 2 is facing the vertical direction, the diameter δ of the shaft portion 22 in the left-right direction of the arm 2 (refer to...) Figure 5The width α of the rectangular opening 33 of the housing 3 is larger than that of the other side in the left-right direction. Therefore, the shaft portion 22 of the arm 2 cannot pass through the rectangular opening 33 of the housing 3.

[0069] Therefore, as Figure 7 As shown, when manufacturing the door opening limit device 1, firstly, the arm 2 is rotated 90 degrees from its original position, thereby changing the position of the stop surface 24 of the arm 2 from a state facing up and down to an assembled state that has been rotated 90 degrees towards the horizontal. In this assembled state, at one end of the arm 2, the width α of the first opening 33 of the housing 3 in the left and right direction is greater than the maximum width ε in the left and right direction observed from the assembled state, i.e., it becomes the original position state (see reference). Figure 8 The vertical width ε of the shaft portion 22 is large. Therefore, in the assembled state where the maximum width in the horizontal direction of one end is set to ε, the arm 2 passes through the first opening 33 of the housing 3, the insertion space 32, and the second opening 35 of the closing member 34.

[0070] At the position where the shaft portion 22 of arm 2 has just passed through the first opening 33 and the second opening 35 of housing 3, such as Figure 8 As shown, the vertical width of the thin-walled portion 25 of arm 2 is narrower than the vertical width ε of the shaft portion 22, and therefore smaller than the horizontal width α of the opening 33 of housing 3. Therefore, the thin-walled portion 25 can function as a rotating part within the opening 33 of housing 3, allowing arm 2 to rotate 90 degrees, returning to its original position with the stop surface 24 of arm 2 facing vertically.

[0071] Figure 9 This is a perspective view of the door opening limit device 1 without showing the housing 3. One end of the arm 2, namely the shaft portion 22, is inserted through the second opening 35 of the housing 3 and extends to the left. A bracket 11 is mounted on the shaft portion 22 of the arm 2, which passes through the second opening 35.

[0072] According to an embodiment of this utility model, during assembly, the arm 2 can be rotated 90 degrees from its original posture to pass through the first opening 33. When the thin-walled portion 25 of the arm 2 is located within the first opening 33, the arm 2 can be rotated 90 degrees to return to its original posture. Therefore, the width α in the left-right direction of the opening 33 of the housing 3 can be smaller than the width β in the up-down direction, thus reducing the width of the opening in the left-right direction. Therefore, the strength of the synthetic resin housing 3 can be ensured, and the door opening limit device 1 can be miniaturized. That is, compared with the up-down direction of the door, there is less space available in the width direction of the door (the left-right direction of the opening of the housing). However, according to this utility model, a door opening limit device can be provided such that: by narrowing the width of the opening of the housing in the left-right direction, the strength of the housing 3 is ensured, thereby smoothly performing the opening and closing action of the door and ensuring durability. Moreover, the space for the installation of the door and the body can also be provided in a space that is narrower in the width direction than before.

[0073] In addition, from Figure 10 As can be seen, with the axis OO passing through the center of the arm 2 as the boundary, the arm 2 and the housing 3 are vertically symmetrical. As mentioned above, the housing 3 has a horizontally symmetrical structure, and the arm 2 has a horizontally symmetrical structure used in the left and right doors. That is, the door opening limiting device 1 has no orientation in the up, down, left, or right directions, so it does not select the left or right doors, thus enabling the commonality of components.

[0074] like Figure 11 As shown, a guide portion 39, integral with the housing 3, can also be provided near the opening 33 of the insertion space 32 within the synthetic resin housing 3, clamping the arm 2 from both sides. This guide portion 39 is inside the housing 3, and its lateral opening width gradually narrows from the opening 33 on the opening surface 36 towards the mounting surface 38, and then gradually widens. This guide portion slides into contact with the arm when the door opens and closes. That is, as the arm 2 moves in and out of the opening 33 with the opening and closing of the door, the guide portion 39 slides into contact with the arm 2, thereby suppressing unnecessary lateral swaying of the arm 2 and ensuring the long-term stable operation of the door opening limit device 1. Furthermore, since the guide portion 39 is integrally formed with the housing 3 without other components, the number of components can be reduced, thus lowering costs, and the increased wall thickness of the housing 3 improves strength.

[0075] Furthermore, in the door opening limiting device 1 of this utility model, the housing 3 has a mounting surface 38 for mounting portions that can be installed in either the door or the body. This mounting surface 38 is formed to be wider in the left-right direction than the side containing the opening surface 36. That is, the housing 3 is formed such that the width in the left-right direction on the side of the second opening 35 is wider than the width in the left-right direction on the side of the first opening 33 (see reference). Figure 4In this way, by ensuring that the mounting surface 38 of the housing has a large area, the load can be further released to the door or body, and the door opening limit device 1 can operate stably for a long time.

[0076] Figure 12 The perspective view of housing 3 is not shown to illustrate the relationship between the sliding shoe 5 and the spring 6 within housing 3. Additionally, Figure 13 This is a top view of the housing 3 taken from above without showing the stop plate 7.

[0077] The sliding shoe 5, spring 6, and stop plate 7 are housed in the housing portion 31 of the housing 3. A convex portion 51 extending axially toward the spring 6 is provided on the outer peripheral surface of the sliding shoe 5, and a concave portion 310 extending axially toward the spring 6 is provided on the inner peripheral surface of the housing portion 31. The convex portion 51 of the sliding shoe 5 and the concave portion 310 of the housing 3 are designed to engage. With this structure, by preventing the sliding shoe 5 from rotating within the housing portion 31, the orientation of the top portion of the sliding shoe 5 relative to the stop surface 24 of the arm 2 can be determined, thereby stopping the door in the correct position. Therefore, wear on the sliding shoe 5 is suppressed, and the door opening limit device 1 operates stably over a long period.

[0078] then, Figure 14 This is a perspective view of the door opening limit device, showing the contact surface of the fully open stop. Figure 15 This is a side view of the arm showing the contact surface of the fully open stop member. A rubber buffer member 12 is provided adjacent to the fully open stop member 4 of the arm 2. The opening surface 36 of the housing 3 abuts against the buffer member 12 of the fully open stop member 4 when the door is fully open. Multiple protrusions 120 are provided on the side of the buffer member 12 that abuts against the contact surface of the housing 3, i.e., the opening surface 36. These multiple protrusions 120 are arranged in rows at corresponding positions above and below the opening surface 36 of the housing 3. An anti-detachment part 26 prevents the buffer member 12 from leaving the fully open stop member 4.

[0079] With the door in the closed position, the door opening limit device 1 is in the [position missing]. Figure 14 The door is positioned close to the bracket 11 as shown in the closed position. When the door moves from the closed position to the opening direction, the sliding shoe 5, pressed against the stop surface 24 of the arm 2 by the spring 6 in the door opening limiting device 1, slides backward on the stop surface 24, thereby providing resistance to the opening action of the door. The arm 2 rotates about the pivot axis 21 of the bracket 11 as the door opens. Furthermore, when the door reaches the fully open position, the abutment portion on the housing 3 side, i.e., the opening surface 36, abuts against the buffer member 12 and the plurality of protrusions 120 of the fully open stop member 4, thereby preventing further movement of the door opening limiting device 1, and the door opening limiting device 1 and the door stop in the fully open position.

[0080] Conversely, when the door moves from the fully open position to the closed position, the door opening limit device 1 moves away from the fully open stop 4 of the arm 2 away from the arm 2 by sliding the slide 5 on the stop surface 24 of the arm 2 and rotating around the pivot 21, and finally stops in the fully closed position.

[0081] When the car door is fully open, the protrusion 120 of the buffer member 12 first contacts the opening surface 36 and is flattened, thus more easily absorbing the impact between the housing 3 and the buffer member 12 of the full-opening stop member 4. As a result, the door opening limit device 1 operates stably for a long time. In addition, when the car door is fully open, the area of ​​contact between the housing 3 and the buffer member 12 of the full-opening stop member 4 is reduced, thus reducing the slamming sound generated when the car door is moved in the closing direction, thereby improving the quality of the product.

[0082] Compared to the width direction of the door (the left-right direction of the opening of the housing), there is more usable space in the vertical direction. Therefore, it is preferable that the width of the opening of the housing in the left-right direction is narrower. In this invention, the width α of the opening 33 of the housing 3 in the left-right direction is smaller than the width β in the vertical direction, and multiple protrusions 120 are provided on the upper and lower sides of the opening 33. As a result, the impact generated by the fully open stop 4 can be mitigated without compromising the advantage of ensuring the strength of the housing 3 by reducing the width of the opening in the left-right direction, thus improving the quality of the door opening limit device 1.

[0083] In other embodiments of this utility model, arm 2 is not limited to Figure 5 The shape shown can be, for example, an arm that is straight in the length direction. Alternatively, the vertical space of the door can be utilized to further increase the vertical width β of the housing opening, thus applying this invention to an arm with height in the vertical direction, such as an arm having two stop surfaces in the vertical direction. Furthermore, this invention can be applied to door opening limiting devices with arms having various structures.

Claims

1. A vehicle door opening limit device, characterized in that, The vehicle's door opening limit device includes: A housing made of synthetic resin, which is fixed to the mounting part of either the door or the body of the vehicle; An arm, which passes through the opening and insertion space of the housing, and whose shaft at one end is flexibly connected to the door and another part of the vehicle body; and A fully open stop, located at the other end of the arm, restricts the fully open position of the door by abutting against a contact surface located on the opening face of the housing. The arm has a middle portion disposed between the shaft portion and the other end portion and has a stop surface with concave and convex shapes in the vertical direction. The housing contains a sliding shoe that slides on the vertical surface of the stop surface of the arm. A spring that applies force to the slipper; and a stop plate that holds the spring within the housing. The housing has an opening on the opening surface, which opens in a direction parallel to the mounting portion. The width of the middle portion of the arm in the left-right direction is smaller than the width of the opening of the housing in the left-right direction, and the left-right direction is orthogonal to the forward and backward direction of the arm. The vertical width of the opening in the housing is greater than the horizontal width of the opening. The width of the opening in the left-right direction is greater than the width of the shaft portion of the arm in the up-down direction.

2. The vehicle door opening limit device according to claim 1, characterized in that, The width of the shaft portion of the arm in the left-right direction is greater than the width of the opening portion in the left-right direction.

3. The vehicle door opening limit device according to claim 1 or 2, characterized in that, The arm has a thin-walled portion near the shaft, where the width of the stop surface in the vertical direction is a relatively thin thickness that allows the arm to rotate within the opening of the housing. The thin-walled portion functions as a rotating part that allows the arm to rotate relative to the housing so that the stop surface faces the vertical direction.

4. The vehicle door opening limit device according to claim 1 or 2, characterized in that, When viewed from the front, the door opening limiting device is vertically symmetrical and / or horizontally symmetrical with respect to the center of the opening of the housing.

5. The vehicle door opening limit device according to claim 1 or 2, characterized in that, The housing has an integral guide portion at the opening near the insertion space. The guide portion slides in contact with the arm when the door is opened or closed. The width of the left-right opening of the guide portion inside the housing gradually narrows from the opening surface toward the housing surface opposite to the opening surface.

6. The vehicle door opening limit device according to claim 1 or 2, characterized in that, The housing has a mounting surface for mounting to either the door or the body, the mounting surface being wider in the left-right direction than the width of the opening surface.

7. The vehicle door opening limit device according to claim 1 or 2, characterized in that, The housing includes a cylindrical portion having a receiving portion for receiving the slide and the spring respectively. The outer peripheral surface of the slide has a convex portion extending along the axial direction of the spring, and the inner peripheral surface of the receiving portion has a concave portion extending along the axial direction of the spring. The convex portion and the concave portion can engage.

8. The vehicle door opening limit device according to claim 1 or 2, characterized in that, The vehicle door opening limit device has a buffer member disposed adjacent to the fully open stop member of the arm. The opening surface and the buffer member abut against each other when the door is fully open. A protrusion is provided on the side of the buffer member that abuts against the opening surface.

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