Iron sleeve buckling and pressing mechanism

Abstract

The utility model relates to an iron sleeve buckling and pressing mechanism which comprises a buckling and pressing shell, a buckling and pressing head, a plurality of push blocks and a plurality of driving pieces, the buckling and pressing shell is cylindrical, a circular buckling and pressing groove is coaxially formed in the upper surface of the buckling and pressing shell, and the push blocks and the driving pieces are evenly arranged in the circumferential direction of the buckling and pressing shell at intervals. The push block is pushed by the driving piece to slide in the buckling shell in the direction of stretching into or stretching out of the buckling groove, the multiple buckling heads are evenly arranged in the circumferential direction of the buckling shell at intervals, and arc-shaped grooves are formed in the sides, facing the circle center of the buckling groove, of the buckling heads. The plurality of buckling heads are pushed by the push block to move towards the circle center direction of the buckling groove until the plurality of arc-shaped grooves form a whole circular buckling hole; a plurality of guide blocks corresponding to the buckling heads are arranged on the bottom wall of the buckling groove, the guide blocks penetrate through the buckling heads, and guide grooves in sliding fit with the guide blocks are formed in the buckling heads. The device has the effect of improving the assembly qualification rate of the automobile seat height adjusting lead screw and the iron sleeve for hard limiting.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts assembly, and in particular to an iron sleeve buckling mechanism. Background Art

[0002] With the acceleration of urban development, cars have become an indispensable means of transportation for people. Because modern urban traffic is often congested, drivers and passengers spend a lot of time sitting in cars. Therefore, the seats in cars are mainly for drivers, which is the top priority. From the perspective of service objects, the driver's body shape, height, and even weight may affect the driver's different requirements for seats, so the requirements for seat adjustment are getting higher and higher.

[0003] At present, the lifting and lowering adjustment of the electric seat of the car is mostly achieved by a screw, and a hard limit iron sleeve is usually pressed on the screw to limit the lifting and lowering of the seat. At present, the assembly of the iron sleeve and the screw is mostly achieved by a gas-liquid booster cylinder, and the iron sleeve is pressed and deformed and fixed on the screw by the gas-liquid booster cylinder. However, this pressing method will cause the pressing deformation to be biased to one side during the pressing process, instead of uniformly deforming toward the center of the circle. The pressing force is very large, which can easily cause uncontrollable deformation of the product during the pressing process, and easily lead to unqualified products after pressing. Therefore, there is an urgent need for a pressing mechanism that can uniformly press and deform the iron sleeve toward the center of the screw. Utility Model Content

[0004] In order to improve the assembly qualification rate of automobile seat height adjustment screw rod and hard limit iron sleeve.

[0005] The iron sleeve buckling mechanism provided in this application adopts the following technical solution:

[0006] A crimping mechanism for an iron sleeve comprises a crimping shell, a crimping head, a push block and a driving member. The crimping shell is cylindrical, and a circular crimping groove is coaxially provided on the upper surface of the crimping shell. A plurality of push blocks and driving members are correspondingly provided, and the plurality of push blocks and driving members are evenly spaced around the circumference of the crimping shell. The push block slides in the crimping shell in the direction of extending into or out of the crimping groove under the push of the driving member. A plurality of crimping heads are evenly spaced around the circumference of the crimping shell, and an arc groove is provided on one side of the crimping head toward the center of the crimping groove. The plurality of crimping heads move toward the center of the crimping groove under the push of the push block until the plurality of arc grooves form a full circular crimping hole.

[0007] Preferably, a plurality of guide blocks are arranged on the bottom wall of the buckling groove corresponding to the buckling head, the guide blocks penetrate the buckling head, and the buckling head is provided with a guide groove which is slidably matched with the guide block.

[0008] Furthermore, an elastic member is provided between a side wall of the guide block facing toward or away from the center of the pressing shell and an inner wall of the guide groove.

[0009] Preferably, a pressing block is provided on an outer wall of one side of the buckling head, and a pressing groove engaged with the pressing block is provided on a side of the buckling head away from the pressing block.

[0010] Preferably, the crimping head is fan-shaped, and the push block is an arc-shaped block, and the arc-shaped surface of the push block facing the crimping head is in contact with the outer wall of the crimping head.

[0011] Furthermore, the plurality of buckling heads are pushed by the push block to move in the center direction of the buckling groove until they are assembled into a full circular structural block.

[0012] Compared with the prior art, the iron sleeve buckling mechanism of the utility model has the following beneficial technical effects:

[0013] 1. When the utility model is used, the screw rod and the iron sleeve are coaxially placed in the buckling groove of the buckling shell, and then the push block is driven by the driving member to slide to push the multiple buckling heads in the buckling groove on the buckling shell, until the arc grooves on the multiple buckling heads are pieced together to form a full circular buckling hole, so as to realize the buckling assembly of the screw rod and the iron sleeve. During buckling, the multiple buckling heads are synchronously pressed by the push block, so that the iron sleeve is buckled and deformed evenly toward the center of the screw rod as much as possible.

[0014] 2. When the utility model is used, the setting of the guide block can make the crimping heads move in the direction of the freedom given by the guide block. The setting of the pressing block and the pressing groove can make the two adjacent crimping heads push each other and achieve synchronous advance and retreat, thereby improving the overall stability of the crimping mechanism and further improving the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model mainly embodies an axial side schematic diagram of the overall structure of an iron sleeve buckling mechanism.

[0016] Figure numerals: 1, buckling shell; 11, buckling groove; 12, pushing groove; 2, buckling head; 21, guide groove; 3, pushing block; 4, driving member; 5, mounting plate; 6, guide block; 7, pressing block; 8, pressing groove. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0018] Unless otherwise defined, the technical terms or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which this application belongs. The words "one" or "an" and the like used in the patent application specification and claims of this application do not indicate a quantity limitation, but indicate the existence of at least one.

[0019] The following is combined with Figure 1 This application is described in further detail.

[0020] The embodiment of the present application discloses an iron sleeve buckling mechanism.

[0021] Reference Figure 1 , an iron sleeve crimping mechanism, including a crimping shell 1, a crimping head 2, a push block 3 and a driving member 4, the crimping shell 1 is cylindrical, and a circular crimping groove 11 is coaxially opened on the upper surface of the crimping shell 1, and a plurality of push blocks 3 and driving members 4 are correspondingly arranged, and the plurality of push blocks 3 and driving members 4 are evenly spaced around the circumferential direction of the crimping shell 1. The push block 3 slides in the crimping shell 1 in the direction of extending into or extending out of the crimping groove 11 under the push of the driving member 4, and the crimping head 2 is evenly spaced around the circumferential direction of the crimping shell 1. An arc groove is opened on one side of the crimping head 2 toward the center of the crimping groove 11. The plurality of crimping heads 2 move toward the center of the crimping groove 11 under the push of the push block 3 until the plurality of arc grooves form a full circular crimping hole. When crimping, the screw rod and the iron sleeve are coaxially placed in the crimping groove 11, and the crimping is achieved by splicing the arc grooves.

[0022] In a further embodiment, a push groove 12 for the push block 3 to slide is opened on the outer wall of the crimping shell 1, and a mounting plate 5 is welded and fixed on the inner wall of the push groove 12 on the side away from the crimping groove 11, and the driving member 4 is fixed on the mounting plate 5 by bolts. In this embodiment, the number of driving members 4 and push blocks 3 is preferably four, and the driving member 4 is preferably a cylinder. The crimping head 2 is fan-shaped, and the push block 3 is an arc-shaped block. The arc-shaped surface of the push block 3 facing the side of the crimping head 2 is in contact with the outer wall of the crimping head 2. Under the push of the push block 3, multiple crimping heads 2 move in the direction of the center of the crimping groove 11 until they are assembled into a full circular structural block, so that the sliding and splicing between the multiple crimping heads 2 is smoother, and the crimping pressure of each crimping head 2 in the circumferential direction is more uniform.

[0023] Reference Figure 1In a further embodiment, a plurality of guide blocks 6 corresponding to the crimping head 2 are welded and fixed on the bottom wall of the crimping groove 11, the guide block 6 passes through the crimping head 2, and a guide groove 21 for slidingly cooperating with the guide block 6 is opened on the crimping head 2. An elastic member (not shown in the figure) is installed between the side wall of the guide block 6 facing or away from the center of the crimping shell 1 and the inner wall of the guide groove 21. During crimping, the piston of the driving member 4 pushes the push block 3 to move the crimping head 2 in the direction of the degree of freedom given by the guide block 6. The setting of the elastic member can realize the automatic retraction of the crimping head 2 through the elastic force of the elastic member after the crimping is completed, without the need to manually realize the retraction of multiple crimping heads 2, thereby improving the overall convenience of the crimping mechanism. In a feasible embodiment, the elastic member can be an elastic rubber member or a spring. In this embodiment, the elastic member is preferably a spring. The retraction principle of the spring is a prior art and will not be elaborated on.

[0024] Reference Figure 1 A pressing block 7 is integrally injection molded on the outer wall of one side of the crimping head 2, and a pressing groove 8 engaged with the pressing block 7 is provided on the side of the crimping head 2 away from the pressing block 7. In this embodiment, the number of the crimping heads 2 is preferably eight, and two crimping heads 2 correspond to one push block 3. A simple hydraulic system cannot make the eight crimping heads 2 move forward at the same time. In order to make the eight crimping heads 2 move forward at the same time, the pressing block 7 on any crimping head 2 is clamped into the pressing groove 8 of another crimping head 2 on the adjacent side, and so on. The pressing block 7 on the eighth crimping head 2 is clamped and pressed into the pressing groove 8 of the first crimping head 2. During the crimping process, the first crimping head 2 pushes the second one during the process of moving forward, until the eighth crimping head 2 pushes the first crimping head 2 during the process of moving forward. In this way, the eight crimping heads 2 can move in and out at the same time, thereby ensuring that the eight crimping heads 2 are pressed on the iron sleeve at the same time and the crimping pressure is equal, which greatly improves the qualified rate of the assembled finished product.

[0025] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An iron sleeve buckling mechanism, characterized in that: The invention comprises a crimping shell (1), a crimping head (2), a push block (3) and a driving member (4); the crimping shell (1) is cylindrical; a circular crimping groove (11) is coaxially provided on the upper surface of the crimping shell (1); a plurality of push blocks (3) and a driving member (4) are provided correspondingly; the plurality of push blocks (3) and driving members (4) are evenly spaced around the circumference of the crimping shell (1); the push block (3) slides in the crimping shell (1) in a direction of extending into or extending out of the crimping groove (11) under the push of the driving member (4); a plurality of crimping heads (2) are evenly spaced around the circumference of the crimping shell (1); an arc groove is provided on one side of the crimping head (2) facing the center of the crimping groove (11); the plurality of crimping heads (2) move towards the center of the crimping groove (11) under the push of the push block (3) until the plurality of arc grooves form a full circular crimping hole.

2. The iron sleeve buckling mechanism according to claim 1, characterized in that: A plurality of guide blocks (6) are arranged on the bottom wall of the buckling groove (11) corresponding to the buckling head (2); the guide blocks (6) penetrate the buckling head (2); and the buckling head (2) is provided with a guide groove (21) that slidably cooperates with the guide blocks (6).

3. The iron sleeve buckling mechanism according to claim 2, characterized in that: An elastic member is provided between a side wall of the guide block (6) facing toward or away from the center of the pressing shell (1) and an inner wall of the guide groove (21).

4. The iron sleeve buckling mechanism according to claim 1, characterized in that: A pressing block (7) is provided on the outer wall of one side of the pressing head (2), and a pressing groove (8) engaged with the pressing block (7) is provided on the side of the pressing head (2) facing away from the pressing block (7).

5. The iron sleeve buckling mechanism according to claim 1, characterized in that: The buckling head (2) is fan-shaped, and the push block (3) is an arc-shaped block. The arc-shaped surface of the push block (3) facing the buckling head (2) is in contact with the outer wall of the buckling head (2).

6. The iron sleeve buckling mechanism according to claim 5, characterized in that: The plurality of buckling heads (2) are pushed by the push block (3) to move in the direction of the center of the buckling groove (11) until they are assembled into a full circular structural block.

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