Lead screw nut for automobile

Abstract

The utility model relates to the technical field of nuts, and discloses an automobile lead screw nut which comprises a nut body and a nut outer cylinder, the nut body comprises a first cylinder body, a first limiting piece, a first spring and a limiting ring, the two ends of the first cylinder body are each provided with a first sliding groove, the number of the first sliding grooves is four, and the first sliding grooves are symmetrically arranged; the first limiting piece is slidably connected into the first sliding groove, one end of the first spring is installed in the first sliding groove, the other end of the first spring is installed at one end of the first limiting piece, the other end of the first limiting piece is provided with a limiting ring, and the limiting ring is slidably connected into the nut outer barrel. The nut outer barrel comprises a top cover, an annular brush, a second barrel body, a second limiting piece, a second spring, a ball and a limiting column, a first annular sliding groove is formed in the end, close to the first barrel body, of the top cover, and the limiting ring is slidably connected into the first annular sliding groove. By means of the structure, force generated by collision with an object when the nut moves can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a screw nut for automobiles. Background Art

[0002] Screw nuts are commonly used parts in mechanical transmission. Their main function is to convert rotary motion into linear motion or vice versa. Screw nuts are used in conjunction with screws to achieve the lifting or moving of the nut by rotating the screws. For example, on machine tools, screw nuts are often used to provide vertical or horizontal power for workpieces.

[0003] The utility model patent application document with the publication number "CN213393395U" discloses a screw nut for automobiles, which mainly includes a base, a first internal thread, a first threaded hole, a rubber pad, a sliding sleeve, a second internal thread, a second threaded hole and a fastening rod. Through the arrangement of the first internal thread and the second internal thread, the screw nut can be threadedly installed to ensure the installation accuracy, and under the action of the friction pad, it is convenient for people to install and use. Through the arrangement of the fastening rod, the gasket, the fastening cap and other structures, the connection tightness between the sliding sleeve and the base can be ensured, and the overall strength of the nut can be enhanced to improve the use effect.

[0004] The automotive lead screw nut disclosed in the above document has the following defects: when the nut encounters an obstacle, the nut will not be able to continue to advance due to the influence of resistance, which will cause damage to the thread of the lead screw or the nut, and will have a serious impact on the accuracy of subsequent transmission.

[0005] It can be seen from this that the existing automotive screw nuts do not have a structure to prevent the nut from being damaged when the nut encounters an obstacle. Utility Model Content

[0006] The utility model aims to provide a screw nut for automobiles to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a screw nut for automobiles, comprising a nut body and a nut outer cylinder, the nut body comprising a first cylinder, a first limiting piece, a first spring and a limiting ring, both ends of the first cylinder are provided with a first slide groove, the first slide groove is set to four and is symmetrically arranged, the first limiting piece is slidably connected to the inside of the first slide groove, one end of the first spring is mounted on the inside of the first slide groove, the other end of the first spring is mounted on one end of the first limiting piece, the other end of the first limiting piece is installed with a limiting ring, the limiting ring is slidably connected to the inside of the nut outer cylinder, the nut outer cylinder comprises a top cover, an annular brush, a second cylinder, a second limiting piece, a second spring, a ball and a limiting column, the top cover is provided with a first annular slide groove on one end close to the first cylinder, and the limiting ring is slidably connected to the inside of the first annular slide groove.

[0009] Furthermore, a thread groove is formed at one end of the top cover away from the first cylinder, and the annular brush is threadably connected to the top cover via the thread groove.

[0010] Furthermore, both ends of the second cylinder are provided with second annular sliding grooves, and the top cover is slidably connected inside the second annular sliding grooves.

[0011] Furthermore, a second slide groove is provided on the inner surface of the second cylinder, and the second slide groove is set to four and symmetrically arranged. The second limit piece is slidably connected to the inside of the second slide groove, one end of the second spring is installed in the inside of the second slide groove, and the other end of the second spring is installed in one end of the second limit piece. A placement groove is provided on the other end of the second limit piece, and the ball is rotatably connected to the inside of the placement groove. A limiting groove is provided on the outer surface of the first cylinder, and the limiting groove is set to four and symmetrically arranged. The second limit piece is slidably connected to the inside of the limiting groove.

[0012] Furthermore, a third annular groove is provided on the outer surface of the first cylinder, and the third annular groove is set to two and symmetrically arranged. The third annular groove and the limiting groove form a third groove, and the ball is slidably connected inside the third groove.

[0013] Furthermore, a limiting column is installed inside the second sliding groove.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model reduces the force generated by the nut colliding with an object when moving by providing a first slide groove, a limit piece, a first spring, a limit ring and a top cover on the first cylinder, and prevents dust on the screw rod from entering the nut by providing a threaded groove and an annular brush on the top cover.

[0016] (2) The utility model provides a second slide groove, a second limit member and a placement groove provided by the second limit member, a second spring, a ball and a limiting groove provided by the first cylinder, so that the nut outer cylinder can move together with the nut body. By providing the first slide groove and the third annular slide groove provided by the first cylinder, the limit member, the first spring, the limit ring, the top cover and the first annular slide groove provided by the top cover, the second cylinder and the second annular slide groove provided by the second cylinder, the nut body and the nut outer cylinder are separated and idle when the nut encounters an obstruction, thereby reducing the probability of damage to the thread of the screw rod and preventing damage to the nut body. By providing a limiting column, the movement range of the second limit member is limited to prevent the ball from escaping from the third annular groove and the limit groove.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a cross-sectional view of the main structure of the utility model;

[0021] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 4 This is a cross-sectional view of the nut body of the utility model;

[0023] Figure 5 This is a cross-sectional view of the outer tube of the nut of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1. nut body; 101. first cylinder; 10101. limiting groove; 10102. third annular groove; 102. first limiting member; 103. first spring; 104. limiting ring; 2. nut outer cylinder; 201. top cover; 202. annular brush; 203. second cylinder; 204. second limiting member; 205. second spring; 206. ball; 207. limiting column. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 - Figure 5 The utility model is a kind of automotive screw nut, including a nut body 1 and a nut outer cylinder 2, the nut body 1 includes a first cylinder 101, a first limiting member 102, a first spring 103 and a limiting ring 104, both ends of the first cylinder 101 are provided with a first slide groove, the first slide groove is set to four and symmetrically arranged, the first limiting member 102 is slidably connected to the inside of the first slide groove, one end of the first spring 103 is installed in the inside of the first slide groove, the other end of the first spring 103 is installed at one end of the first limiting member 102, the other end of the first limiting member 102 is installed with a limiting ring 104, the limiting ring 104 is slidably connected to the inside of the nut outer cylinder 2, the nut outer cylinder 2 includes a top cover 201, an annular brush 202, a second cylinder 203, a second limiting member 204, a second spring 205, a ball 206 and a limiting column 207, the top cover 201 is provided with a first annular slide groove at one end close to the first cylinder 101, and the limiting ring 104 is slidably connected to the inside of the first annular slide groove;

[0028] By providing the first cylinder 101, the first stopper 102, the first spring 103, the stopper ring 104 and the top cover 201, the force generated by the collision with the object when the nut moves can be reduced;

[0029] A thread groove is formed at one end of the top cover 201 away from the first cylinder 101, and the annular brush 202 is threadedly connected to the top cover 201 through the thread groove;

[0030] By providing the annular brush 202, dust on the screw rod will not enter the interior of the nut;

[0031] Both ends of the second cylinder 203 are provided with second annular grooves, and the top cover 201 is slidably connected inside the second annular grooves;

[0032] The inner surface of the second cylinder 203 is provided with a second slide groove, the number of which is four and symmetrically arranged, the second limiter 204 is slidably connected inside the second slide groove, one end of the second spring 205 is installed inside the second slide groove, the other end of the second spring 205 is installed at one end of the second limiter 204, the other end of the second limiter 204 is provided with a placement groove, the ball 206 is rotatably connected inside the placement groove, the outer surface of the first cylinder 101 is provided with a limiting groove 10101, the number of which is four and symmetrically arranged, the second limiter 204 is slidably connected inside the limiting groove 10101;

[0033] The outer surface of the first cylinder 101 is provided with a third annular chute 10102, the third annular chute 10102 is set to be two and symmetrically arranged, the third annular chute 10102 and the limiting groove 10101 form a third chute, and the ball 206 is slidably connected inside the third chute;

[0034] A limiting column 207 is installed inside the second slide groove;

[0035] By setting the limiting groove 10101, the third annular groove 10102, the second cylinder 203, the second limit piece 204, the second spring 205, the ball 206 and the limiting column 207, when the nut is blocked by foreign objects, the nut outer cylinder 2 is forced to move so that the second limit piece 204 and the ball 206 are separated from the limiting groove 10101 and enter the third annular groove 10102, so that the nut body 1 rotates with the screw rod, reducing the probability of damage to the screw rod thread and preventing damage to the nut body 1.

[0036] During use, when the nut encounters an obstacle and cannot move forward, the top cover 201 is forced to move in the direction away from the obstacle and drives the second cylinder 203 to move. Since the second limiting member 204 is connected to the second cylinder 203, when the second limiting member 204 moves with the second cylinder 203 and disengages from the limiting groove 10101, when the ball 206 connected to the second limiting member 204 rotates and enters the third annular groove 10102, the nut body 1 will not be able to drive the nut outer tube 2 to continue to advance, and the nut body 1 will also rotate with the screw rod, so that the nut keeps idling on the screw rod, avoiding the chance of damage to the screw rod thread and preventing damage to the nut body 1.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A screw nut for automobiles, comprising a nut body (1) and a nut outer cylinder (2), characterized in that: The nut body (1) comprises a first cylinder (101), a first limiting member (102), a first spring (103) and a limiting ring (104); first sliding grooves are provided at both ends of the first cylinder (101); four first sliding grooves are set and are symmetrically arranged; the first limiting member (102) is slidably connected to the inside of the first sliding groove; one end of the first spring (103) is installed in the inside of the first sliding groove; the other end of the first spring (103) is installed at one end of the first limiting member (102); the other end of the first limiting member (102) is installed with a limiting ring (104); the limiting ring (104) is slidably connected to the inside of the nut outer cylinder (2); The nut outer cylinder (2) comprises a top cover (201), an annular brush (202), a second cylinder (203), a second stopper (204), a second spring (205), a ball (206) and a limit column (207); a first annular groove is formed at one end of the top cover (201) close to the first cylinder (101); and the stop ring (104) is slidably connected to the inside of the first annular groove.

2. The automotive screw nut according to claim 1, characterized in that: A thread groove is formed at one end of the top cover (201) away from the first cylinder (101), and the annular brush (202) is threadably connected to the top cover (201) via the thread groove.

3. The automotive screw nut according to claim 1, characterized in that: Second annular sliding grooves are provided at both ends of the second cylinder (203), and the top cover (201) is slidably connected inside the second annular sliding grooves.

4. The automotive screw nut according to claim 1, characterized in that: The inner surface of the second cylinder (203) is provided with a second slide groove, the number of the second slide grooves is set to four and are symmetrically arranged, the second limit member (204) is slidably connected inside the second slide groove, one end of the second spring (205) is installed inside the second slide groove, the other end of the second spring (205) is installed at one end of the second limit member (204), the other end of the second limit member (204) is provided with a placement groove, the ball (206) is rotatably connected inside the placement groove, the outer surface of the first cylinder (101) is provided with a limiting groove (10101), the number of the limiting grooves (10101) is set to four and are symmetrically arranged, and the second limit member (204) is slidably connected inside the limiting groove (10101).

5. The automotive screw nut according to claim 4, characterized in that: A third annular slide groove (10102) is provided on the outer surface of the first cylinder (101), and the third annular slide groove (10102) is set to be two and symmetrically arranged. The third annular slide groove (10102) and the limiting groove (10101) form a third slide groove, and the ball (206) is slidably connected inside the third slide groove.

6. The automotive screw nut according to claim 4, characterized in that: A limiting column (207) is installed inside the second sliding groove.

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