A transverse wire outlet type wire protection box and a stepping motor thereof

Abstract

The utility model relates to motor technical field especially relates to a transverse wire outlet type wire protection box and step motor thereof, including lower box body, upper cover and the buckle structure of fixing both, the lower box body bottom projects and forms the baffle to with upper cover encloses and forms the protection cavity for accommodating the circuit board of transverse arrangement and the wire outlet for the lead wire on circuit board transverse extension, be equipped with in protection cavity for circuit board carries out the transverse positioning structure and longitudinal positioning structure of definition, the wire outlet that the upper cover and the lower box body of the application form for lead wire transverse extension, thereby can greatly reduce the risk that lead wire and circuit board welding part breaks, and dust, oil dirt etc.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a horizontal cable outlet type cable protection box and its stepper motor. Background Technology

[0002] Chinese patent CN219740070U discloses a structure that uses a boss in a cable outlet box to prevent wire breakage. It includes a mountain-shaped placement groove, in which a circuit board is placed. A cable guide groove is opened on the top of the first cable outlet box. A boss is provided on the inner wall of the first cable outlet box between the cable guide groove and the placement groove. A wire harness is coupled to the circuit board. After the wire harness turns through the boss, it extends outward through the cable guide groove. Although the design of the boss can change the direction of the wire harness, reduce the force at the solder joint of the circuit board, and thus reduce the risk of wire harness breakage caused by external force, the circuit board is set horizontally and the wire harness extends vertically. After the wire harness is soldered to the circuit board, it still needs to be turned before extending, and the solder joint still has the risk of breakage. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the problem that in the prior art, the circuit board inside the cable guard box is arranged horizontally, the wire harness extends vertically, and the wire harness still needs to be turned and extended after being welded to the circuit board, and the weld joint still has the risk of breaking. Here, a horizontally exiting cable guard box and its stepper motor are provided.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a horizontal cable outlet type cable protection box, including a lower box body, an upper cover body covering the lower box body, and a buckle structure located between the lower box body and the upper cover body to fix the two together. The bottom of the lower box body protrudes to form a partition plate to surround the upper cover body to form a protective cavity for accommodating a horizontally arranged circuit board and a cable outlet for the horizontal extension of the leads on the circuit board. The protective cavity is provided with a horizontal positioning structure and a vertical positioning structure for limiting the circuit board.

[0005] The lateral positioning structure includes a limiting protrusion formed by the protrusion of the inner peripheral wall of the lower box and a limiting groove formed by the recess of the circuit board for the limiting protrusion to be engaged.

[0006] The longitudinal positioning structure includes a support portion protruding from the interior of the lower housing and a pressing portion protruding from the upper cover, wherein the support portion and the pressing portion clamp the circuit board between them.

[0007] Furthermore, the buckle structure includes a snap-fit ​​portion protruding from the lower box body and a snap-fit ​​groove recessed from the upper cover body for the snap-fit ​​portion to snap into.

[0008] Furthermore, the buckle structure also includes a hook protruding from the upper cover and a groove formed by bending the lower box body for the hook to engage.

[0009] Furthermore, the supporting part includes a first supporting step and a second supporting step located at both ends of the lower box body. The first supporting step is formed by protruding upward from the partition, and the second supporting step is formed by bending the lower box body.

[0010] Furthermore, an elastic deformation groove is provided on the lower box body near the snap-fit ​​part, and the elastic deformation groove penetrates the top surface of the lower box body.

[0011] Furthermore, the upper cover includes a cover portion and a retaining edge extending from the cover portion, the retaining edge being located outside the lower box body and at least blocking the elastic deformation groove.

[0012] Furthermore, one end of the lower box body protrudes longitudinally to form a positioning part, and the upper cover body is recessed to form a positioning groove for the positioning part to engage.

[0013] A stepper motor, comprising the aforementioned transverse cable tray.

[0014] The beneficial effects of this utility model are as follows: The upper cover and lower box of this application form an outlet for the lead wire to extend laterally, which can greatly reduce the risk of the lead wire breaking at the solder joint of the circuit board, and prevent dust, oil and other contaminants from entering. At the same time, the partition is used to separate the skeleton assembly from the wire protection box as much as possible, which can further prevent foreign objects from entering the motor, extend the service life of the components inside the protection cavity, and fix the position of the circuit board by using the lateral positioning structure and the longitudinal positioning structure, thereby improving the stability of the wiring. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention from a first-person perspective;

[0017] Figure 2 This is a three-dimensional schematic diagram of the present invention from a second perspective;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is an exploded view of this utility model;

[0020] Figure 5 This is a structural diagram of the lower box;

[0021] Figure 6 This is a schematic diagram of the upper cover structure;

[0022] In the picture:

[0023] 1. Lower box body; 101. Limiting protrusion; 102. Snap-fit ​​part; 103. Hook groove; 104. First supporting step; 105. Second supporting step; 106. Elastic deformation groove; 107. Positioning part; 108. Partition;

[0024] 2. Upper cover; 201. Pressing part; 202. Snap-fit ​​groove; 203. Snap hook; 204. Covering part; 205. Edge retainer; 206. Positioning groove;

[0025] 3. Protective cavity;

[0026] 4. Cable outlet;

[0027] 5. Lead wire;

[0028] 6. Circuit board; 601. Limiting groove. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0030] like Figures 1-6 As shown, a horizontally exiting cable protection box is fixed to a frame assembly. The cable protection box includes a lower box body 1, an upper cover body 2 covering the lower box body 1, and a snap-fit ​​structure located between the lower box body 1 and the upper cover body 2 to fix the two together. The bottom of the lower box body 1 protrudes to form a partition 108, which, together with the upper cover body 2, forms a protective cavity 3 for accommodating a horizontally arranged circuit board 6 and a cable outlet 4 for the horizontally extending leads 5 on the circuit board 6. The cable outlet 4 has a trapezoidal structure. The protective cavity 3 is provided with a cable outlet for the circuit board. The 6-section features a defined lateral and longitudinal positioning structure. The partition 108 is integrally formed with the lower box 1, which can separate the frame assembly from the wire protection box as much as possible, preventing foreign objects from entering the motor. The circuit board 6 integrates chips, and the protective cavity 3 has only one outlet, the wire outlet 4, which is located on the side. Dust, water, or oil are not easily allowed to enter, thereby extending the service life of the circuit board 6 and chips inside the protective cavity 3. Furthermore, the circuit board 6 is arranged laterally, and the lead wire 5 also extends laterally, which can greatly reduce the risk of the lead wire 5 breaking off at the solder joint of the circuit board 6.

[0031] The lateral positioning structure includes a limiting protrusion 101 protruding from the inner peripheral wall of the lower box 1 and a limiting groove 601 recessed in the circuit board 6 for the limiting protrusion 101 to be inserted into. The number of limiting protrusions 101 and limiting grooves 601 can be, but is not limited to, one, two or three, etc. A number of limiting protrusions 101 correspond one-to-one with the limiting grooves 601, and each limiting protrusion 101 is inserted into its corresponding limiting groove 601. The limiting protrusion 101 is a long strip structure extending longitudinally to the top of the lower box 1, and its cross-section is arc-shaped. On the one hand, the limiting protrusion 101 and the limiting groove 601 cooperate to laterally limit the circuit board 6, and on the other hand, the two cooperate to guide the insertion process of the circuit board 6.

[0032] The longitudinal positioning structure includes a support portion protruding from the interior of the lower box 1 and a pressing portion 201 protruding from the upper cover 2. The support portion and the pressing portion 201 clamp the circuit board 6 between them to limit the longitudinal positioning of the circuit board 6.

[0033] During assembly, the circuit board 6 is first placed into the lower housing 1. During placement, the limiting protrusion 101 and the limiting groove 601 cooperate to guide the placement until the circuit board 6 reaches the supporting part of the lower housing 1. At this time, the limiting protrusion 101 can limit the circuit board 6 laterally. The lead wire 5 extends laterally from the outlet 4. Then, the upper cover 2 is placed on top of the lower housing 1, and the two are fixed by a snap-fit ​​structure. During this process, the pressing part 201 of the upper cover 2 presses on the circuit board 6 and cooperates with the supporting part of the lower housing 1 to limit the circuit board 6 longitudinally. In this application, the upper cover 2 and the lower housing 1 form an outlet 4 for the lead wire 5 to extend laterally, which can greatly reduce the risk of the lead wire 5 breaking at the solder joint of the circuit board 6, and prevent dust, oil and other contaminants from entering. At the same time, the partition 108 is used to separate the skeleton assembly from the wire protection box as much as possible, which can further prevent foreign objects from entering the motor, extend the service life of the components inside the protective cavity 3, and fix the position of the circuit board 6 by using the lateral positioning structure and the longitudinal positioning structure, which improves the stability of the wiring.

[0034] In some examples, the snap-fit ​​structure includes a snap-fit ​​portion 102 protruding from the lower box body 1 and a snap-fit ​​groove 202 recessed from the upper cover body 2 for the snap-fit ​​portion 102 to snap into. The number of snap-fit ​​portions 102 and snap-fit ​​grooves 202 can be, but is not limited to, one, two or three, and they correspond one to one. The snap-fit ​​portion 102 has an inclined guide surface and a horizontal snap-fit ​​surface. The guide surface plays a guiding role in the process of the upper cover body 2 closing the lower box body 1, which is conducive to the snap-fit ​​portion 102 snapping into the snap-fit ​​groove 202. After snapping in, the snap-fit ​​surface abuts against the groove wall of the snap-fit ​​groove 202, thereby confining the snap-fit ​​portion 102 within the snap-fit ​​groove 202.

[0035] In some examples, the buckle structure also includes a hook 203 protruding from the upper cover 2 and a hook groove 103 formed by bending the lower box 1 for the hook 203 to be engaged. The hook 203 and the engaging part 102 are located at both ends of the cable protection box, and the number of hooks 203 and hook grooves 103 can be, but is not limited to, one or two, and the two correspond one to one.

[0036] In some examples, the support portion includes a first support step 104 and a second support step 105 located at both ends of the lower housing 1, respectively. The first support step 104 protrudes upward from the partition 108, and the second support step 105 is formed by bending the lower housing 1. After the lower housing 1 is bent, its outer wall is recessed to form the aforementioned hook groove 103, and its inner wall protrudes to form the second support step 105. The first support step 104 and the second support step 105 respectively support the two ends of the circuit board 6, and the skeleton assembly is supported in the middle of the circuit board 6.

[0037] In some examples, an elastic deformation groove 106 is provided on the lower box 1 near the snap-fit ​​part 102. The elastic deformation groove 106 penetrates the top surface of the lower box 1. The number of elastic deformation grooves 106 corresponds to the number of snap-fit ​​parts 102. During the closing process of the upper cover 2, the upper cover 2 is allowed to undergo slight deformation so that the snap-fit ​​part 102 can smoothly enter the snap-fit ​​groove 202.

[0038] In some examples, the upper cover 2 includes a cover portion 204 and a retaining edge 205 extending from the cover portion 204. The retaining edge 205 is located outside the lower box 1 and at least blocks the elastic deformation groove 106. When the cable protection box is in a closed state, the cover portion 204 is located above the lower box 1 to block its upper end, and the retaining edge 205 is located on the side of the lower box 1 to block its side, thereby ensuring the sealing of the cable protection box.

[0039] In some examples, the lower box 1 has a longitudinally protruding positioning part 107 at one end, and the upper cover 2 has a recessed positioning groove 206 for the positioning part 107 to be inserted into. The positioning part 107 and the positioning groove 206 can be initially positioned during the closing of the upper cover 2.

[0040] A stepper motor, comprising the aforementioned transverse cable tray.

[0041] Working principle:

[0042] During assembly, the circuit board 6 is first placed into the lower housing 1. During placement, the limiting protrusion 101 and the limiting groove 601 cooperate to guide the placement until the circuit board 6 reaches the supporting part of the lower housing 1. At this time, the limiting protrusion 101 can laterally limit the circuit board 6. The lead wire 5 extends laterally from the wire outlet 4. Then, the upper cover 2 is placed on top of the lower housing 1. During the covering process, the positioning part 107 and the positioning groove 206 initially position the two, and the snap-fit ​​part 102 enters the snap-fit ​​groove 202, and the snap hook 203 enters the hook groove 103 to fix the upper cover 2 and the lower housing 1. At this time, the pressure of the upper cover 2... The upper cover 201 is pressed above the circuit board 6 and cooperates with the support part of the lower box 1 to limit the longitudinal position of the circuit board 6. In this application, an outlet 4 for the lead wire 5 to extend laterally is formed between the upper cover 2 and the lower box 1, which can greatly reduce the risk of the lead wire 5 breaking off from the solder joint of the circuit board 6, and prevent dust, oil and other contaminants from entering. At the same time, the partition 108 is used to separate the skeleton assembly from the wire protection box as much as possible, which can further prevent foreign objects from entering the motor, extend the service life of the components inside the protective cavity 3, and fix the position of the circuit board 6 by using the lateral positioning structure and the longitudinal positioning structure, thereby improving the stability of the wiring.

[0043] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A horizontally exiting cable protection box, fixed on a frame assembly, characterized in that: The cable protection box includes a lower box body (1), an upper cover body (2) covering the lower box body (1), and a snap-fit ​​structure located between the lower box body (1) and the upper cover body (2) to fix the two together. The lower box body (1) has a partition (108) protruding from the bottom and is surrounded by the upper cover body (2) to form a protective cavity (3) for accommodating a horizontally arranged circuit board (6) and a wire outlet (4) for the lead wire (5) on the circuit board (6) to extend horizontally. The protective cavity (3) is provided with a horizontal positioning structure and a vertical positioning structure for limiting the circuit board (6). The lateral positioning structure includes a limiting protrusion (101) formed by the protrusion of the inner peripheral wall of the lower box (1) and a limiting groove (601) formed by the recess of the circuit board (6) for the limiting protrusion (101) to be inserted. The longitudinal positioning structure includes a support portion protruding from the interior of the lower box (1) and a pressing portion (201) protruding from the upper cover (2), wherein the support portion and the pressing portion (201) clamp the circuit board (6) between them.

2. A transverse outlet wire protection box according to claim 1, characterized in that: The buckle structure includes a snap-fit ​​part (102) protruding from the lower box body (1) and a snap-fit ​​groove (202) recessed from the upper cover body (2) for the snap-fit ​​part (102) to snap into.

3. A transverse outlet type wire cover according to claim 2, characterized in that: The buckle structure also includes a hook (203) protruding from the upper cover (2) and a groove (103) formed by bending the lower box (1) for the hook (203) to be engaged.

4. A transverse outlet type wire cover according to claim 3, characterized in that: The support portion includes a first support step (104) and a second support step (105) located at both ends of the lower box body (1). The first support step (104) is formed by protruding upward from the partition (108), and the second support step (105) is formed by bending the lower box body (1).

5. The cross-outlet type wire cover according to claim 2, wherein: An elastic deformation groove (106) is provided on the lower box (1) near the snap-fit ​​part (102), and the elastic deformation groove (106) penetrates the top surface of the lower box (1).

6. A transverse outlet type wire cover according to claim 5, characterized in that: The upper cover (2) includes a cover portion (204) and a retaining edge (205) extending from the cover portion (204), the retaining edge (205) being located outside the lower box (1) and at least blocking the elastic deformation groove (106).

7. The transverse outlet wire cover according to claim 1, characterized in that: The lower box (1) has a positioning part (107) protruding longitudinally at one end, and the upper cover (2) has a positioning groove (206) for the positioning part (107) to be inserted.

8. A stepper motor characterized by: Including the horizontally exiting cable protection box as described in any one of claims 1-7.

Images