An adaptive and adjustable rear door stopper

Abstract

The utility model discloses an adaptive adjustable tailgate limit block, including a limit fixing seat clamped on the vehicle body and a sealing ring radially protruding along the outer wall of the limit fixing seat, as well as a latch assembly, a push rod and a compression spring; wherein the limit fixing seat is threadedly connected to the outer wall of the latch assembly, and an elastic body is provided at the intersection with the latch assembly; an upper end cover threadedly connected to the latch assembly is installed above the latch assembly, and the push rod vertically penetrates the inside of the latch assembly and extends to the outside of the upper end cover; the compression spring is installed in the latch assembly, and its lower end is fixed to the bottom of the inner cavity of the latch assembly, and the upper end abuts against the lower end of the push rod. The above-mentioned limit block structure set by the utility model is small in size and low in cost, and can effectively solve the problems of abnormal noise of the tailgate through the characteristic of variable stiffness of the spring.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to an adaptive and adjustable back door limit block. Background Art

[0002] The limit block is a rubber block symmetrically arranged on the rear door of the car. It can support the rear door, reduce the abnormal sound and noise caused by the driving process and opening and closing the rear door, prevent the rear door from scratching and bumping against the car body when the car is driving on bumpy roads, and improve the comfort of the whole vehicle. The limit blocks for automobiles are mainly divided into fixed limit blocks and adjustable limit blocks. Among them, the adjustable limit blocks are widely used because their rubber buffer caps are height-adjustable and can adapt to the manufacturing deviation between the car body and the rear door.

[0003] During the electric opening and closing of the tailgate, the tight sound of the tailgate opening and the inability to close the tailgate electrically are typical problems that affect the user experience. One of the reasons for this is that the height of the tailgate limit block is too high, resulting in excessive reaction force on the tailgate. At this time, adjusting the height of the limit block can alleviate this phenomenon. However, reducing the height of the limit block will also reduce its support for the tailgate. When the car is driving on bumpy roads, the tailgate will twist and shake. The reduction in the interference between the limit block and the opponent may produce discontinuous knocking noises such as "da da", which greatly affects the ride comfort. How to ensure that the limit block plays an effective supporting role and improves the user experience is a difficult problem.

[0004] One of the reasons for the abnormal noise from the tailgate is that the limit block does not play an effective limiting role. This is because the manufacturing dimensions of the car body fluctuate, and the internal clearance of each car cannot be guaranteed to be exactly the same. It is not easy for the online workers to accurately adjust the tailgate limit blocks of each car to the correct position during the installation and adjustment process. Incorrect installation and adjustment of the limit blocks will cause the tailgate to make a tight sound when opening and abnormal noise when driving on bumpy roads.

[0005] Therefore, it is very important to choose a reasonable limit block. Utility Model Content

[0006] The main purpose of the utility model is to provide an adaptive and adjustable tailgate limit block, which can effectively solve the problem that the limit block for automobiles in the background technology cannot ensure effective support under the condition of bumpy roads.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An adaptive and adjustable tailgate stopper includes a stopper fixed seat clamped on a vehicle body, a sealing ring radially protruding outward along an outer wall of the stopper fixed seat, a latch assembly, a push rod and a compression spring;

[0009] Wherein, the position-limiting fixing seat is threadedly connected to the outer wall of the latch assembly, and an elastic body is provided at the intersection between the position-limiting fixing seat and the latch assembly;

[0010] An upper end cover threadedly connected to the latch assembly is installed above the latch assembly, and the push rod vertically penetrates the interior of the latch assembly and extends to the outside of the upper end cover;

[0011] The compression spring is installed in the latch assembly, with its lower end fixed to the bottom of the inner cavity of the latch assembly and its upper end abutting against the lower end of the ejector rod.

[0012] As a further solution of the utility model, the latch assembly includes a latch and a threaded sealing ring;

[0013] The outer wall of the position limiting fixing seat and the inner wall of the upper end cover are both provided with threaded sections that can be threadably matched with the threaded sealing ring;

[0014] The threaded sealing ring is sleeved on the outside of the latch and is threadedly connected with the upper end cover and the limiting fixing seat.

[0015] As a further solution of the utility model, the upper end cover is threadedly connected to the upper end of the threaded sealing ring, and a through hole for limiting the push rod is provided at the center of the end surface of the upper end cover, and the push rod passes through the through hole and is embedded in the latch.

[0016] As a further solution of the utility model, the inner wall of the latch is provided with a sliding groove;

[0017] The upper end of the outer wall of the push rod is provided with an external thread, and the lower end is provided with a convex rib that can slidably cooperate with the sliding groove of the inner wall of the latch, so that the push rod can slide axially along the inner cavity of the sliding groove.

[0018] As a further solution of the utility model, the upper end surface of the push rod is provided with a buffer cap threadedly connected thereto;

[0019] The buffer cap comprises: a buffer cap fixing seat and a rubber buffer cap fitted and fixed on the outer side of the buffer cap fixing seat.

[0020] As a further solution of the utility model, a groove is provided at the center of the bottom of the buffer cap fixing seat; the inner diameter of the groove matches the outer diameter of the upper end surface of the push rod; the inner wall of the groove is provided with an internal thread, and the internal thread matches the external thread of the push rod.

[0021] As a further solution of the utility model, the inner edge of the sealing ring is provided with a limiting groove capable of engaging with the outer wall protrusion of the limiting fixing seat.

[0022] As a further solution of the utility model, the compression spring is a variable stiffness spring;

[0023] The latch assembly is made of plastic.

[0024] The beneficial effects of the utility model are as follows:

[0025] An adaptive and adjustable tailgate limit block includes a limit fixing seat clamped on the vehicle body and a sealing ring radially protruding along the outer wall of the limit fixing seat, as well as a latch assembly, a push rod and a compression spring. The limit fixing seat is threadedly connected to the outer wall of the latch assembly, and an elastic body is provided at the intersection with the latch assembly; an upper end cover threadedly connected to the latch assembly is installed above the latch assembly, and the push rod vertically penetrates the inside of the latch assembly and extends to the outside of the upper end cover; the compression spring is installed in the latch assembly, and its lower end is fixed to the bottom of the inner cavity of the latch assembly, and the upper end abuts against the lower end of the push rod. By arranging a compression spring with variable stiffness in the latch, the push rod of the limit block can have a certain compressible stroke in the latch. When the push rod is compressed in the initial stage, the stiffness of the spring is small, and the rubber cap arranged at the upper end of the push rod also has a small supporting force on the tailgate. The rubber cap is subjected to a continuous elastic force and fits tightly with the opponent. By properly arranging the low-rigidity compression stroke of the rubber cap, it is possible to prevent the abnormal noise of the back door, the tight sound of the back door opening, and the inability to close the back door electrically due to insufficient interference of the limit block when the car is driving on bumpy roads. The spring stiffness of the rubber cap is greater when it is compressed near the end, and the support force for the back door is also greater at this time, which significantly improves the stability of the back door when driving on bumpy roads.

[0026] The adaptive adjustable limit block provided in the utility model has a small size and low cost, and can effectively solve the problem of abnormal noise of the back door through the characteristic of variable stiffness of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of an adaptive and adjustable back door limit block of the utility model;

[0028] Figure 2 This is a cross-sectional view of an adaptive and adjustable rear door limit block of the utility model;

[0029] Figure 3 It is a schematic diagram of the slidable structure of the sliding groove in the latch of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the variable wire diameter, variable pitch and variable center diameter spring of the utility model;

[0031] In the figure: 1. limit fixing seat; 2. latch assembly; 21. latch; 211. sliding groove; 22. threaded sealing ring; 3. push rod; 4. compression spring; 5. upper end cover; 6. buffer cap; 61. buffer cap fixing seat; 62. rubber buffer cap; 7. elastomer; 8. sealing ring. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] like Figure 1-2 As shown, the utility model provides an adaptive adjustable tailgate stopper, comprising a stopper fixing seat 1 clamped on the vehicle body, a sealing ring 8 radially protruding outward along the outer wall of the stopper fixing seat 1, a latch assembly 2, a push rod 3 and a compression spring 4. The latch assembly 2 is made of plastic.

[0034] In this embodiment, the application of the compression spring 4 in the adaptive adjustable limit block is crucial. The compression spring 4 is a variable stiffness spring, which can be a constant line diameter variable pitch spring, a variable line diameter variable pitch spring, or a variable line diameter variable pitch variable mid-diameter spring. Figure 4 The compression spring 4 in the adaptive adjustable limit block is a variable wire diameter, variable pitch and variable middle diameter spring. The pitch, wire diameter and middle diameter of the entire spring are variable from the upper end to the lower end. When the back door is closed, the spring is loaded and compressed. In the initial compression stroke, the spring coils do not contact each other and maintain a constant small stiffness. The spring is further compressed until the spring coils with small pitches gradually merge, and the spring stiffness increases accordingly. When the spring coils with large pitches are merged to only work, the spring maintains a constant large stiffness.

[0035] The inner edge of the sealing ring 8 is provided with a limiting groove which can engage with the outer wall protrusion of the limiting fixing seat 1 .

[0036] The limiting fixing seat 1 is threadedly connected to the outer wall of the latch assembly 2, and an elastic body 7 is provided at the intersection between the limiting fixing seat 1 and the latch assembly 2 to play a sealing role.

[0037] An upper end cover 5 threadedly connected to the latch assembly 2 is installed above the latch assembly 2, and the push rod 3 vertically penetrates the inside of the latch assembly 2 and extends to the outside of the upper end cover 5;

[0038] The compression spring 4 is installed in the latch assembly 2 , with its lower end fixed to the bottom of the inner cavity of the latch assembly 2 and its upper end abutting against the lower end of the push rod 3 .

[0039] In one embodiment, the detent assembly 2 includes a detent 21 and a threaded sealing ring 22;

[0040] The outer wall of the position limiting fixing seat 1 and the inner wall of the upper end cover 5 are both provided with threaded sections that can be threadably matched with the threaded sealing ring 22;

[0041] The threaded sealing ring 22 is sleeved on the outside of the latch 21 and is threadedly connected to the upper end cover 5 and the limiting fixing seat 1 .

[0042] In one embodiment, the upper end cover 5 is threadedly connected to the upper end of the threaded sealing ring 22 , and a through hole for limiting the push rod is provided at the center of the end surface of the upper end cover 5 , and the push rod 3 passes through the through hole and is embedded in the latch 21 .

[0043] like Figure 3 As shown, the inner wall of the latch 21 is provided with a sliding groove 211;

[0044] The upper end of the outer wall of the push rod 3 is provided with an external thread, and the lower end is provided with a convex rib that can slidably cooperate with the sliding groove 211 on the inner wall of the latch 21, so that the push rod 3 can slide axially along the inner cavity of the sliding groove 211.

[0045] In one embodiment, the upper end surface of the push rod 3 is provided with a buffer cap 6 threadedly connected thereto; the buffer cap 6 includes: a buffer cap fixing seat 61 and a rubber buffer cap 62 fitted and fixed to the outer side of the buffer cap fixing seat 61; the rubber buffer cap 62 fixes the buffer cap fixing seat 61.

[0046] Optionally, a groove is provided at the center of the bottom of the buffer cap fixing seat 61; the inner diameter of the groove matches the outer diameter of the upper end surface of the push rod 3; the inner wall of the groove is provided with an internal thread, and the internal thread matches the external thread of the push rod 3.

[0047] Working principle: Due to the manufacturing error between the vehicle body and the tailgate, the internal clearance between them will fluctuate up and down based on the theoretical internal clearance. The clearance difference between the tailgate and the vehicle body is achieved by adjusting the hinge and the lock ring. The tailgate limit block mainly plays a supporting role to prevent the tailgate from shaking and making abnormal noises during the vehicle road test. The limit block is usually arranged on the tailgate side or the vehicle body side. The closer its position is to the tailgate boundary, the better the support effect on the tailgate. This embodiment proposes an adaptive and adjustable tailgate limit block, which is screwed and clamped on the vehicle body or the tailgate sheet metal by a limit fixing seat 1. The height of the limit block is adjusted by screwing the latch assembly 2 to meet different internal clearances. Among them, the latch assembly 2 is composed of a latch 21 and a threaded sealing ring 22. The lower end of the push rod 3 is provided with a convex rib, which cooperates with the sliding groove 211 in the latch 21 and can slide freely up and down. Figure 3 As shown. The upper end cover 5 is screwed to the upper end of the latch 21, and acts as a limiter for the push rod 3 to prevent the push rod from sliding out of the latch 21 during the up and down sliding process. The compression spring 4 is a variable stiffness spring, which can be a spring with a constant line diameter and a variable pitch, a spring with a variable line diameter and a variable pitch, or a spring with a variable line diameter and a variable pitch and a variable middle diameter, etc.; as the push rod 3 compresses the compression spring 4 and moves toward the bottom of the latch 21, the stiffness of the compression spring 4 gradually increases overall, and the supporting force on the push rod 3 also gradually increases, that is, the supporting force of the limit block on the back door also becomes greater and greater.

[0048] When the car is driving on a bumpy road, the supporting force of the limit block on the tailgate will be adaptively adjusted as the tailgate shakes, and the buffer cap 6 will always press against the tailgate under the action of the spring force. A gap-free state is permanently maintained between the limit block and the opponent, preventing abnormal knocking noise from occurring at the limit block of the tailgate. Moreover, when the tailgate shakes violently, the compression distance of the spring increases, and the supporting force on the tailgate also increases, which can better ensure the stability of the tailgate during vehicle driving.

[0049] It should be noted that, in one embodiment, due to the manufacturing error between the vehicle body and the back door, in order to ensure that the gap surface difference between the back door and the vehicle body meets the standard, the workers on the line will adjust the back door. After the hinge and the lock ring are adjusted, the adaptive limit block of the back door is adjusted. The height of the limit block relative to the sheet metal fixing surface can be adjusted by screwing the catch assembly 2. While ensuring that the rubber buffer cap 62 of the limit block fits the counterpart, the variable stiffness compression spring 4 in the catch 21 is compressed to the initial compression stroke range with a smaller initial stiffness. At the same time, it is necessary to meet the plastic film test requirements, that is, when the back door is open, place a strip of plastic film at the joint between the limit block and the sheet metal, and then close the back door. If the film can be pulled out with a slight resistance, the adaptive adjustable limit block is installed and adjusted; if the plastic film is pulled out without any resistance or cannot be pulled out, it means that the limit block height is too low and there is a gap with the sheet metal or the limit block height is too high and the limit block is pressed too tightly by the sheet metal. The above situation is because the limit block height is unreasonable, and the latch assembly 2 should be turned to continue to adjust the limit block height until the plastic film test requirements are met.

[0050] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An adaptive and adjustable back door stopper, characterized in that: It includes a limit fixing seat clamped on the vehicle body, a sealing ring radially protruding outward along the outer wall of the limit fixing seat, a latch assembly, a push rod and a compression spring; Wherein, the position-limiting fixing seat is threadedly connected to the outer wall of the latch assembly, and an elastic body is provided at the intersection between the position-limiting fixing seat and the latch assembly; An upper end cover threadedly connected to the latch assembly is installed above the latch assembly, and the push rod vertically penetrates the interior of the latch assembly and extends to the outside of the upper end cover; The compression spring is installed in the latch assembly, with its lower end fixed to the bottom of the inner cavity of the latch assembly and its upper end abutting against the lower end of the ejector rod.

2. The adaptive adjustable rear door stopper according to claim 1, characterized in that: The latch assembly includes a latch and a threaded sealing ring; The outer wall of the position limiting fixing seat and the inner wall of the upper end cover are both provided with threaded sections that can be threadably matched with the threaded sealing ring; The threaded sealing ring is sleeved on the outside of the latch and is threadedly connected with the upper end cover and the limiting fixing seat.

3. The adaptive adjustable rear door stopper according to claim 2, characterized in that: The upper end cover is threadedly connected to the upper end of the threaded sealing ring. A through hole for limiting the push rod is provided at the center of the end surface of the upper end cover. The push rod passes through the through hole and is embedded in the latch.

4. The adaptive adjustable rear door stopper according to claim 2, characterized in that: The inner wall of the latch is provided with a sliding groove; The upper end of the outer wall of the push rod is provided with an external thread, and the lower end is provided with a convex rib that can slidably cooperate with the sliding groove of the inner wall of the latch, so that the push rod can slide axially along the inner cavity of the sliding groove.

5. The adaptive and adjustable rear door stopper according to claim 4, characterized in that: The upper end surface of the push rod is provided with a buffer cap threadedly connected thereto; The buffer cap comprises: a buffer cap fixing seat and a rubber buffer cap fitted and fixed on the outer side of the buffer cap fixing seat.

6. The adaptive and adjustable rear door stopper according to claim 5, characterized in that: A groove is provided at the center of the bottom of the buffer cap fixing seat; the inner diameter of the groove matches the outer diameter of the upper end surface of the push rod; the inner wall of the groove is provided with an internal thread, and the internal thread matches the external thread of the push rod.

7. The adaptive and adjustable rear door stopper according to claim 1, characterized in that: The inner edge of the sealing ring is provided with a limiting groove which can be engaged with the outer wall protrusion of the limiting fixing seat.

8. The adaptive and adjustable back door stopper according to claim 1, characterized in that: The compression spring is a variable stiffness spring; The latch assembly is made of plastic.

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