Small electric push rod with stable structure

Abstract

The utility model discloses a small-sized electric push rod with a stable structure, which belongs to the technical field of electric push rods and comprises two groups of shells connected through bolts, a fixed cylinder, a motor, a gear box, a lead screw assembly and a sectional type flexible flat cable are respectively mounted in the shells, the motor is mounted on one side, close to the sectional type flexible flat cable, of the gear box, and the lead screw assembly is mounted on the other side of the motor. Two clamping protrusions are arranged on the inner walls of the two shells, and clamping grooves matched with the clamping protrusions are formed in the two sides of the end, close to the motor, of the fixed barrel. The output end of the gearbox is connected with a bearing, the bearing is installed at one end of the lead screw assembly, clamping springs are installed at the two ends of the bearing, the clamping springs are clamped on the lead screw assembly, and a plurality of sets of protrusions clamped with the shaft end of the lead screw assembly are arranged on the sides, close to the lead screw assembly, of the clamping springs. The service life is prolonged; and the structure is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric push rod technical field especially relates to a small -size electric push rod of stable structure. BACKGROUND

[0002] Electric push rod is a kind of electric power drive device that the rotary motion of motor is changed into the linear reciprocating motion of push rod.It can be used as execution machinery in various simple or complex process to realize remote control, centralized control or automatic control.

[0003] For the small -size electric push rod of general conventional use, usually adopt the way of tenon and mortise of stainless steel to bearing and press the bearing, and the wobble of screw rod occurs in the operation process, and in the long-term use process, it is very likely to cause the fracture of bearing connecting place, to affect the use and life of electric push rod. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects of prior art, the technical problems to be solved by the utility model are to provide a small -size electric push rod that effectively reduces the wobble of screw rod, prolongs the service life and is stable in structure.

[0005] In order to achieve the purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a small -size electric push rod of stable structure, including two groups of shell connected by bolt, fixed cylinder, motor, gear box, screw rod assembly and segmented soft cable are installed in the shell respectively, the motor is installed in gear box near segmented soft cable one side, two groups of the inner wall of shell is provided with two groups of clamping protrusions, the both sides of fixed cylinder near motor one end are provided with the clamping groove matched with clamping protrusion;

[0007] The output end of gear box is connected with bearing, the bearing is installed in one end of screw rod assembly, the clamping spring is installed at the both ends of bearing, the clamping spring is clamped on screw rod assembly, the clamping spring near screw rod assembly one side is provided with a plurality of groups of protrusions and is clamped with the shaft end of screw rod assembly.

[0008] The utility model preferably technical scheme lies in, two groups of the inner wall of shell is provided with clamping end symmetrically, and two groups of clamping end are clamped and set on the outer wall of bearing.

[0009] The utility model preferably technical scheme lies in, the screw rod assembly includes the screw rod of one end installation on bearing, and profiled nut is screwed on the screw rod, and movable cylinder is arranged on the profiled nut.

[0010] The utility model preferably technical scheme lies in, the fixed cylinder is clamped and installed with the cover away from motor one end, the movable cylinder one end passes through fixed cylinder and is provided with lifting lug, and the movable cylinder is slidably connected with the cover.

[0011] The utility model discloses preferably technical scheme is at, install the wire buckle on the shell, install the electric wire on the wire buckle, and the electric wire one end is connected with sectional flexible flat cable.

[0012] The utility model discloses preferably technical scheme is at, sectional flexible flat cable includes the flexible flat cable of installation in the shell and the special-shaped flexible flat cable of through the clamping groove clamping in motor one end.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a bearing installation structure of electric push rod, including shell, motor, gear box, bearing, screw rod assembly, flexible flat cable and wire buckle, the shell is installed on the motor, and the motor is installed on the gear box, and the gear box is installed on the bearing, and the bearing is installed on the screw rod assembly, and the screw rod assembly is installed on the flexible flat cable, and the flexible flat cable is installed on the wire buckle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the electric push rod structure main body schematic diagram provided in the embodiment of the utility model;

[0016] Figure 2 It is the electric push rod structure explosion drawing provided in the embodiment of the utility model;

[0017] Figure 3 It is the electric push rod structure schematic diagram provided in the embodiment of the utility model;

[0018] Figure 4 It is the bearing and screw rod installation structure schematic diagram provided in the embodiment of the utility model;

[0019] Figure 5 It is the sectional flexible flat cable schematic diagram provided in the embodiment of the utility model;

[0020] In the drawings, the component list represented by each sign is as follows:

[0021] 1, shell;11, bolt;12, clamping protrusion;13, clamping end;2, fixed cylinder;21, cover;22, clamping groove;3, motor;4, gear box;41, output end;5, bearing;51, spring;6, screw rod assembly;61, screw rod;62, special-shaped nut;63, movable cylinder;7, wire buckle;71, electric wire;8, sectional flexible flat cable;9, lifting lug. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model is further illustrated by the specific embodiment in combination with the drawings.

[0023] A small electric push rod with stable structure, comprising two groups of housings 1 connected by bolts 11, a fixed cylinder 2, a motor 3, a gear box 4, a screw rod assembly 6 and a segmented flexible cable 8 are respectively installed in the housings 1, the motor 3 is installed on the side of the gear box 4 close to the segmented flexible cable 8, two groups of clamping protrusions 12 are arranged on the inner walls of the two groups of housings 1, and clamping grooves 22 adapted to the clamping protrusions 12 are arranged on the two sides of the end of the fixed cylinder 2 close to the motor 3;

[0024] The output end 41 of the gear box 4 is connected with a bearing 5, the bearing 5 is installed at one end of the screw rod assembly 6, clamping springs 51 are installed at both ends of the bearing 5, the clamping springs 51 are clamped on the screw rod assembly 6, a plurality of groups of protrusions adapted to the shaft end of the screw rod assembly 6 are arranged on the side of the clamping spring 51 close to the screw rod assembly 6, and clamping ends 13 are symmetrically arranged on the inner walls of the two groups of housings 1, the two groups of clamping ends 13 are clamped on the outer wall of the bearing 5, and the segmented flexible cable 8 comprises a flexible cable installed in the housing 1 and a special-shaped flexible cable clamped at one end of the motor 3.

[0025] During installation, the clamping springs 51 are installed at both ends of the bearing 5, one end of the screw rod assembly 6 is installed on the bearing 5, the output end 41 of the gear box 4 is connected with one end of the screw rod assembly 6 and passes through the bearing 5, the fixed cylinder 2 is installed on the screw rod assembly 6, the motor 3 is connected with the input shaft of the gear box 4 and is installed on one side of the gear box 4, and the above-mentioned components are correspondingly installed in the inside of the housing 1, so that the clamping grooves 22 on the two sides of the fixed cylinder 2 are adaptively installed with the clamping protrusions 12, the bearing 5 is clamped on the clamping end 13, the segmented flexible cable 8 is installed in the inside of the housing 1, and after another group of housings 1 are installed at positions corresponding to the bearing 5 and the clamping groove 22, the housings 1 are fixed by bolts 11, the clamping springs 51 are arranged at both ends of the bearing 5 in a riveting manner, so as to improve the firmness of the installation of the bearing 5, reduce wear and tear, effectively reduce the motion resistance, and cooperate with the clamping and holding of the bearing 5 by the clamping ends 13 on both sides, so as to effectively improve the stability of the bearing 5, reduce the shaking of the screw rod assembly 6 during operation, reduce the probability of fracture at the connection with the bearing 5 during long-term use, and effectively prolong the service life of the equipment. The structure of the segmented flexible cable 8 includes but is not limited to the splicing of two groups of straight flexible cables or the splicing structure in the attached Figure 5 The segmented flexible cable 8 can be adapted to various specifications by setting, has high adaptability, can effectively reduce the inventory pressure of the use of the flexible cable, can be customized according to the needs of customers, and can be installed and used, and has wide application range.

[0026] As a possible implementation of the present scheme, preferably, the screw rod assembly 6 comprises a screw rod 61 mounted at one end on the bearing 5, a profiled nut 62 is screwed on the screw rod 61, and a movable cylinder 63 is arranged on the profiled nut 62.

[0027] The motor 3 is started, and the motor 3 drives the output end 41 of the gear box 4 to rotate through cooperation with the gear box 4, the output end 41 drives the screw rod 61 to rotate, and the profiled nut 62 drives the movable cylinder 63 to move linearly along the inside of the fixed cylinder 2 under cooperation of the screw rod 61 and the profiled nut 62, so that the rotary motion is converted into long-distance linear motion, the position of the movable cylinder 63 is moved, and the electric push rod is lengthened or shortened.

[0028] As a possible implementation of the present scheme, preferably, the fixed cylinder 2 is clamped and mounted with a cover 21 away from the motor 3, the movable cylinder 63 is provided with a lifting lug 9 at one end penetrating through the fixed cylinder 2, and the movable cylinder 63 is in sliding connection with the cover 21, so that the movement of the movable cylinder 63 can be effectively limited, and the stability of the movable cylinder 63 during use is further improved.

[0029] As a possible implementation of the present scheme, preferably, the shell 1 is mounted with a wire buckle 7, the wire buckle 7 is mounted with an electric wire 71, and one end of the electric wire 71 is connected with the sectional flexible flat cable 8, so that the electric wire 71 can be effectively mounted on the shell 1 through the wire buckle 7, and the stability of the electric wire 71 during installation can be effectively improved.

[0030] The utility model is described through preferred embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model, the utility model is not limited by the specific embodiments disclosed herein, and other embodiments falling within the claims of the present application all belong to the protection scope of the utility model.

Claims

1. A structurally stable small electric linear actuator, characterized in that: The device includes two sets of housings (1) connected by bolts (11). Inside each housing (1) are a fixed cylinder (2), a motor (3), a gearbox (4), a lead screw assembly (6), and a segmented flexible flat cable (8). The motor (3) is installed on the side of the gearbox (4) near the segmented flexible flat cable (8). Two sets of engaging protrusions (12) are provided on the inner walls of the two sets of housings (1). The fixed cylinder (2) has engaging grooves (22) on both sides near the motor (3) that are adapted to the engaging protrusions (12). The output end (41) of the gearbox (4) is connected to a bearing (5). The bearing (5) is installed at one end of the lead screw assembly (6). Snap rings (51) are installed at both ends of the bearing (5). The snap rings (51) are snapped onto the lead screw assembly (6). The snap rings (51) have several sets of protrusions on the side of the snap rings (51) near the lead screw assembly (6) that engage with the shaft end of the lead screw assembly (6).

2. The structurally stable small electric linear actuator according to claim 1, characterized in that: The inner walls of the two sets of outer shells (1) are symmetrically provided with engaging ends (13), and the two sets of engaging ends (13) are engaged on the outer wall of the bearing (5).

3. A structurally stable small electric linear actuator according to claim 1, characterized in that: The lead screw assembly (6) includes a lead screw (61) mounted on a bearing (5) at one end, a special-shaped nut (62) screwed onto the lead screw (61), and a movable cylinder (63) provided on the special-shaped nut (62).

4. A structurally stable small electric linear actuator according to claim 3, characterized in that: The fixed cylinder (2) is fitted with a cover (21) at the end away from the motor (3), and the movable cylinder (63) is provided with a lifting lug (9) at one end passing through the fixed cylinder (2). The movable cylinder (63) is slidably connected to the cover (21).

5. A structurally stable small electric linear actuator according to claim 1, characterized in that: A wire buckle (7) is installed on the outer casing (1), and an electric wire (71) is installed on the wire buckle (7). One end of the electric wire (71) is connected to a segmented flexible flat cable (8).

6. A structurally stable small electric linear actuator according to claim 1, characterized in that: The segmented flexible flat cable (8) includes a flexible flat cable installed in the housing (1) and a non-circular flexible flat cable that is engaged with one end of the motor (3) through a slot.

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