Compact push rod motor structure

Abstract

The utility model discloses a compact push rod motor structure, the compact push rod motor structure comprises a shell, a motor and a transmission assembly, the shell is a hollow structure, the motor and the transmission assembly are both fixedly arranged in the inner cavity of the shell, and the transmission assembly comprises a worm, a fixing sleeve, a worm gear, a rack, a spring and an ejector rod. The compact push rod motor structure provided by the embodiment of the utility model is compact and reasonable in overall structure, and through the transmission effect of the transmission assembly, the motor output controls the stretching of the push rod through the transmission of torque, so that the push function is realized, the cost is low, and the occupied space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a compact push rod motor structure. Background Art

[0002] At present, my country's automobile industry is developing rapidly, and people are traveling long distances. In order to meet the needs of long-distance driving and daily cooling / heating of food / drinking water, more and more family cars have added refrigerators in the central armrest. When opening the refrigerator door, an unlocking motor is required to trigger the refrigerator door to open.

[0003] The existing push rod motor structure is relatively complex and occupies a large space. Therefore, there is an urgent need for a miniaturized and compact push rod motor structure to reduce the space occupied. Utility Model Content

[0004] In order to overcome the deficiencies of related products in the prior art, the utility model proposes a compact push rod motor structure.

[0005] The utility model provides a compact push rod motor structure, comprising: a shell, a motor and a transmission component, the shell is a hollow structure, the motor and the transmission component are fixedly arranged in the inner cavity of the shell, wherein the transmission component comprises a worm, a fixing sleeve, a worm wheel, a rack, a spring and a push rod, the worm is sleeved on the output shaft of the motor, the end of the worm is inserted in the fixing sleeve, the fixing sleeve is arranged at the bottom of the shell, a shaft is arranged on the side of the worm, the shaft is fixedly arranged at the bottom of the shell, the axis position of the worm wheel is rotatably arranged on the shaft, the other end of the worm wheel is arranged with a rack, the worm wheel is a double-layer gear structure, the lower layer of the worm wheel is meshed with the worm, and the upper layer of the worm wheel is meshed with the rack; the rack is slidably arranged on the side wall of the shell, and the end of the rack is fixedly connected to the inner end of the push rod, the shell is provided with an output through hole corresponding to the position of the push rod, the push rod is inserted in the output through hole, and the outer end of the push rod extends to the outside of the output through hole.

[0006] In certain embodiments of the present invention, the housing includes an upper cover and a lower cover assembled with each other, and both the upper cover and the lower cover are injection molded.

[0007] In certain embodiments of the present invention, a plurality of groups of connecting ears are disposed on the side of the shell, and connecting holes are formed on the connecting ears.

[0008] In certain embodiments of the present invention, a reinforcing rib is further provided at the connection between the connecting ear and the shell.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] The compact push rod motor structure described in the embodiment of the utility model has a compact and reasonable overall structure. Through the transmission action of the transmission assembly, the motor output controls the extension and retraction of the push rod through the transmission of torque, thereby realizing the pushing function, with low cost and small space occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 This is a schematic cross-sectional reference diagram of the compact push rod motor structure of the present invention.

[0013] Description of reference numerals:

[0014] 1. Housing; 2. Motor; 3. Worm; 4. Fixed sleeve; 5. Worm wheel; 6. Rack; 7. Spring; 8. Push rod; 9. Output through hole; 10. Shaft; 11. Connecting ear; 12. Connecting hole. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. The drawings show preferred embodiments of the present invention. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0016] See also Figure 1As shown, the compact push rod motor structure includes a housing 1, a motor 2 and a transmission assembly, the housing 1 is a hollow structure, the motor 2 and the transmission assembly are fixedly arranged in the inner cavity of the housing 1, wherein the transmission assembly includes a worm 3, a fixing sleeve 4, a worm wheel 5, a rack 6, a spring 7 and a push rod 8, the worm 3 is sleeved on the output shaft of the motor 2, the end of the worm 3 is inserted in the fixing sleeve 4, the fixing sleeve 4 is arranged at the bottom of the housing 1, the side of the worm 3 is provided with a shaft 10, and the shaft 10 is fixedly arranged at the bottom of the housing 1, The axial position of the worm wheel 5 is rotatably set on the shaft 10, and a rack 6 is set at the other end of the worm wheel 5. The worm wheel 5 is a double-layer gear structure, and the lower gear of the worm wheel 5 is meshed with the worm 3, and the upper gear of the worm wheel 5 is meshed with the rack 6; the rack 6 is slidably set on the side wall of the shell 1, and the end of the rack 6 is fixedly connected to the inner end of the push rod 8. The shell 1 is provided with an output through hole 9 corresponding to the position of the push rod 8. The push rod 8 is inserted into the output through hole 9, and the outer end of the push rod 8 extends to the outside of the output through hole 9.

[0017] The housing 1 shown includes an upper cover (not shown) and a lower cover which are assembled with each other. Both the upper cover and the lower cover are injection molded, which has the advantages of low cost and high product consistency.

[0018] A plurality of connecting ears 11 are disposed on the side of the shell 1 , and connecting holes 12 are formed on the connecting ears 11 . The connecting ears 11 cooperate with the connecting holes 12 to be connected to an external supporting mechanism, thereby achieving connection and fixation of the shell 1 .

[0019] In some implementations of the present invention, a reinforcing rib (not shown) may be further provided at the connection between the connecting ear 11 and the housing 1 to enhance the stability of the structure.

[0020] The working principle of the compact push rod motor structure described in the embodiment of the utility model is specifically as follows: after the motor 2 is energized, the worm 3 is driven to rotate, thereby driving the worm wheel 5 to rotate, and the spur teeth on the worm wheel 5 cooperate with the rack 6 connected to the end of the push rod 8 to drive the rack 6, pushing the push rod 8 to extend outward along the output through hole 9 (the spring 77 is compressed at this time), thereby pushing the buckle button on the refrigerator to release, so that the refrigerator door can be opened; after the refrigerator door is opened, the control system instantly cuts off the power to the push rod motor, and the motor 2 no longer moves. At this time, the spring 7 on the push rod 8 changes from a compressed state to a freely extended state, and the spring 7 will push the push rod 8 to move in the opposite direction, thereby driving the worm wheel 5 and the worm 3 to rotate, until the push rod 8 retreats to the initial state to achieve reset.

[0021] The compact push rod motor structure described in the embodiment of the utility model has a compact and reasonable overall structure. Through the transmission action of the transmission assembly, the motor output controls the extension and retraction of the push rod 8 through the transmission of torque, thereby realizing the pushing function, with low cost and small space occupation.

[0022] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The above are only embodiments of the utility model, but do not limit the patent scope of the utility model. Although the utility model is described in detail with reference to the above embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the above specific implementation methods, or replace some of the technical features therein with equivalents. Any equivalent structure made by using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the patent of this utility model.

Claims

1. A compact push rod motor structure, It is characterized in that include: A housing (1), a motor (2) and a transmission assembly, wherein the housing (1) is a hollow structure, and the motor (2) and the transmission assembly are both fixedly arranged in the inner cavity of the housing (1), wherein the transmission assembly comprises a worm (3), a fixing sleeve (4), a worm wheel (5), a rack (6), a spring (7) and a push rod (8), wherein the worm (3) is sleeved on the output shaft of the motor (2), the end of the worm (3) is inserted into the fixing sleeve (4), the fixing sleeve (4) is arranged at the bottom of the housing (1), a shaft (10) is arranged on the side of the worm (3), the shaft (10) is fixedly arranged at the bottom of the housing (1), and the worm wheel (5) is provided with a spring (7) and a push rod (8). The axial position is rotatably arranged on the shaft (10), and a rack (6) is arranged at the other end of the worm wheel (5). The worm wheel (5) is a double-layer gear structure, and the lower gear of the worm wheel (5) is meshed with the worm (3), and the upper gear of the worm wheel (5) is meshed with the rack (6); the rack (6) is slidably arranged on the side wall of the shell (1), and the end of the rack (6) is fixedly connected to the inner end of the push rod (8), and the shell (1) is provided with an output through hole (9) at a position corresponding to the push rod (8), and the push rod (8) is inserted into the output through hole (9), and the outer end of the push rod (8) extends to the outside of the output through hole (9).

2. The compact push rod motor structure according to claim 1, Features: The housing (1) shown comprises an upper cover and a lower cover which are assembled with each other, and both the upper cover and the lower cover are injection molded.

3. The compact push rod motor structure according to claim 1, Features: A plurality of groups of connection ears (11) are arranged on the side of the shell (1), and connection holes (12) are opened on the connection ears (11).

4. The compact push rod motor structure according to claim 3, Features: A reinforcing rib is also provided at the connection between the connecting ear (11) and the housing (1).

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