A structural unit, mounting plate and method for mounting a wiring harness corrugated tube tie

Abstract

The present invention provides a structural unit for installing a cable tie for a wire harness corrugated tube, comprising a positioning block, a first arc-shaped slot for fixing the corrugated tube provided on the positioning block, at least one second arc-shaped slot for installing the cable tie provided in the middle of the first arc-shaped slot, the depth of the second arc-shaped slot being greater than the depth of the first arc-shaped slot, the width of the second arc-shaped slot being greater than the width of the first arc-shaped slot, and a groove provided on the slope wall on one side of the second arc-shaped slot so that the cable tie can only extend from the top of the slope on this side and extend from the top of the slope on the other side in one direction. The present invention also provides a mounting plate for installing a cable tie for a wire harness corrugated tube, comprising a prefabricated mounting plate body, and also comprising the above-mentioned several structural units, the mounting plate body being provided with several fixing grooves for fixing the structural units. The present invention also provides a method for installing a cable tie for a wire harness corrugated tube, comprising the following steps: placing the corrugated tube into the first arc-shaped slot, and extending the cable tie from one side of the second arc-shaped slot with the groove and extending through the other side.

Description

Technical Field

[0001] The invention relates to the field of PTC heater product wiring harness corrugated tube tie installation, and in particular to a structural unit, a mounting plate and a method for wiring harness corrugated tube tie installation. Background Art

[0002] With the global need for energy conservation and emission reduction, electric vehicles are a new direction of automobile development. PTC heaters are also an indispensable part of electric vehicles due to their stable performance, rapid heating and little influence from power supply voltage fluctuations.

[0003] Due to the need for results, PTC heater products usually have longer wire lengths, and the product wiring harness needs to be fixed with cable ties when installed on the air conditioning assembly, so most products need to install cable ties on the wiring harness corrugated tube, and the position and direction of the cable tie directly determine the installation effect of the wiring harness on the air conditioning assembly. The existing method is to manually straighten the corrugated tube, measure and mark the installation position of the cable tie with a steel ruler, and visually check the installation direction of the cable tie. This method often has quality problems such as position deviation and installation direction error, and can no longer meet the requirements. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a structural unit, a mounting plate and a method for installing a cable tie for a wiring harness corrugated tube, so as to solve the technical problems such as position deviation of the wiring harness corrugated tube of a PTC heater product during the installation of the cable tie, too slow efficiency of manual marking position, wrong installation direction of the cable tie, etc.

[0005] The present invention is achieved in that:

[0006] The present invention provides a structural unit for installing a cable tie for a wire harness corrugated tube, comprising a positioning block, wherein the positioning block is provided with a first arc-shaped slot for fixing the corrugated tube, wherein the middle portion of the first arc-shaped slot is provided with at least one second arc-shaped slot for installing the cable tie, wherein the depth of the second arc-shaped slot is greater than the depth of the first arc-shaped slot, the width of the second arc-shaped slot is greater than the width of the first arc-shaped slot, and a slope wall on one side of the second arc-shaped slot is provided with a slope that allows the cable tie to only extend from the top of the slope on one side in one direction and extend from the top of the slope on the other side.

[0007] Preferably, the positioning block includes an auxiliary positioning block and one or two cable tie installation positioning blocks, the first arc-shaped slot includes a third arc-shaped slot provided on the cable tie installation positioning block and a fourth arc-shaped slot provided on the auxiliary positioning block, the third arc-shaped slot passes through the cable tie installation positioning block, the second arc-shaped slot is located at one end of the third arc-shaped slot, the fourth arc-shaped slot passes through the auxiliary positioning block, and the auxiliary positioning block is fixedly connected to one end of each cable tie installation positioning block provided with the second arc-shaped slot.

[0008] Preferably, the auxiliary positioning block is provided with a first mounting hole for fixedly connecting the auxiliary positioning block and the cable tie mounting positioning block.

[0009] Preferably, the cable tie mounting positioning block is provided with a second mounting hole for mounting the positioning block on the mounting plate.

[0010] Preferably, the slope is a steep slope protruding from the slope wall of the second arc-shaped slot, the steep slope includes a steep slope surface connected to the slope top on the same side, and the steep slope also includes a steep slope bottom that prevents the cable tie from extending from the slope top on the other side into the slope wall of the second arc-shaped slot and extending from the slope top on the same side as the steep slope.

[0011] Preferably, the tops of both sides of the first arc-shaped slot are provided with first chamfers for facilitating the insertion of the bellows.

[0012] Preferably, the tops of both sides of the second arc-shaped slot are provided with second chamfers for facilitating the insertion of a cable tie.

[0013] The present invention also provides a mounting plate for installing wire harness corrugated tube tie straps, comprising a prefabricated mounting plate body and the above-mentioned structural units for installing the wire harness corrugated tube tie straps, wherein the mounting plate body is provided with a plurality of fixing grooves for fixing the structural units, and each of the structural units corresponds one-to-one to each of the fixing grooves.

[0014] The present invention also provides a method for installing a cable tie for a wire harness corrugated tube, comprising the following steps: S1, prefabricating a mounting plate body, a plurality of auxiliary positioning blocks and a plurality of cable tie installation positioning blocks; S2, fixing the auxiliary positioning block to one or two cable tie installation positioning blocks to form a structural unit; S3, installing the assembled structural units on the mounting plate body; S4, straightening the corrugated tube and placing it into a first arc-shaped slot; S5, extending each cable tie from one side of the groove of each second arc-shaped slot, passing under the corrugated tube and extending from the other side of the second arc-shaped slot; S6, buckling the cable tie.

[0015] The present invention has the following beneficial effects:

[0016] The present invention installs the cable tie on the product in a manner that the installation positions of the corrugated pipe and the cable tie are completely positioned by tooling, and the design of the cable tie installation groove can prevent the installation direction of the cable tie from being wrong. The arc-shaped insertion design also simplifies the operation. The position of the entire structural unit on the mounting plate can also automatically determine the installation position of the cable tie, avoiding manual fixing of the product and straightening of the corrugated pipe, manual marking of the installation position of the cable tie with a steel ruler, and manual visual inspection of the installation direction of the cable tie, thereby saving production costs, facilitating employee operation, improving product quality, and greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative work.

[0018] Figure 1 A three-dimensional diagram of a structural unit for installing a wire harness corrugated tube tie provided in an embodiment of the present invention;

[0019] Figure 2 A front view of a structural unit for installing a wire harness corrugated tube tie provided by an embodiment of the present invention;

[0020] Figure 3 A top view of a structural unit for installing a wire harness corrugated tube tie provided in an embodiment of the present invention;

[0021] Figure 4 A front view of a cable tie installation positioning block provided in an embodiment of the present invention;

[0022] Figure 5 A top view of a cable tie installation positioning block provided in an embodiment of the present invention;

[0023] Figure 6 A top view of an auxiliary positioning block provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1-Figure 6, Embodiment 1 of the present invention provides a structural unit for installing a cable tie for a wire harness corrugated tube, comprising a positioning block, a first arc-shaped slot for fixing the corrugated tube is provided on the positioning block, at least one second arc-shaped slot 1 for installing a cable tie is provided in the middle of the first arc-shaped slot, the number of the second arc-shaped slots 1 is determined according to the number of cable ties required to be tied to the corrugated tube on the structural unit, the depth of the second arc-shaped slot 1 is greater than the depth of the first arc-shaped slot, the width of the second arc-shaped slot 1 is greater than the width of the first arc-shaped slot, and a groove 2 is provided on the slope wall on one side of the second arc-shaped slot 1 so that the cable tie can only extend from the top of the slope on this side in one direction and extend from the top of the slope on the other side. In order to facilitate the processing of the groove, the positioning block includes an auxiliary positioning block 3 and one or two cable tie installation positioning blocks 4. The first arc-shaped slot includes a third arc-shaped slot 5 provided on the cable tie installation positioning block and a fourth arc-shaped slot 6 provided on the auxiliary positioning block. The third arc-shaped slot 5 passes through the cable tie installation positioning block 4. The second arc-shaped slot 1 is located at one end of the third arc-shaped slot 5. The fourth arc-shaped slot 6 passes through the auxiliary positioning block 3. After the groove on the second arc-shaped slot 1 is processed, the auxiliary positioning block 3 is fixedly connected to one end of each cable tie installation positioning block 4 provided with the second arc-shaped slot 1. When the two cable ties on the corrugated tube are close to each other, the structural unit of the cable tie installation of the harness corrugated tube can be composed of two cable tie installation positioning blocks 4 and an auxiliary positioning block 3. The auxiliary positioning block 3 is located between the two cable tie installation positioning blocks 4. The auxiliary positioning block 3 and the cable tie installation positioning block 4 are combined together to limit the cable tie. The positioning block can also be divided into two pieces along the width direction of the second arc-shaped slot. The two pieces are combined to obtain a complete second arc-shaped slot. A part of the groove is processed on each of the two pieces. The complete groove is formed after the two pieces are combined.

[0026] Embodiment 2 of the present invention provides a mounting plate for installing a cable tie of a wire harness corrugated tube, comprising a prefabricated mounting plate body, and also comprising the above-mentioned structural units for installing the cable tie of the wire harness corrugated tube, wherein the mounting plate body is provided with a plurality of fixing grooves for fixing the structural units, and each of the structural units corresponds to each of the fixing grooves one by one. The prefabricated mounting plate in the factory has set the spacing and arrangement of each structural unit, thus avoiding the error caused by manual measurement and marking, and making the cable tie installation of the wire harness corrugated tube more convenient.

[0027] The structural unit for installing a cable tie on a wire harness corrugated tube provided by the present invention can be applied to the cable tie installation process of the wire harness corrugated tube of a PTC heater product, as well as other processes for installing a cable tie on the surface of a wire harness outer jacket corrugated tube.

[0028] The present invention clamps, straightens and positions the corrugated tube equipped with the wiring harness through the first arc-shaped slot, and then fixes the installation position and direction of the cable tie through the second arc-shaped slot 1. The arc-shaped design of the cable tie passing into the slot is convenient, fast and labor-saving.

[0029] The cable tie installation positioning block 4 includes a third arc-shaped slot 5 for installing the corrugated tube and a second arc-shaped slot 1 for installing the cable tie, wherein the second arc-shaped slot 1 for installing the cable tie has a bevel design, and the cable tie extends from one end of the second arc-shaped slot 1 and extends from the other end along the arc of the second arc-shaped slot 1, and the bevel design on the edge of the second arc-shaped slot 1 can prevent errors in the installation direction of the cable tie. The position of the cable tie installation positioning block on the mounting plate and the position of the cable tie installation slot directly determine the position and direction of the cable tie installation, avoiding manual measurement marks and direction errors.

[0030] The auxiliary positioning block 3 includes a fourth arc-shaped slot 6 for installing the bellows. The design of the auxiliary positioning block 3 cooperating with the cable tie installation positioning block 4 can not only reduce the processing difficulty of the entire unit, but also limit the left and right positions of the cable tie. The position of the overall structural unit on the mounting plate can also be used to determine the installation position of the cable tie, avoiding manual measurement marking.

[0031] The auxiliary positioning block 3 is provided with a first mounting hole 7 for fixedly connecting the auxiliary positioning block 3 and the cable tie installation positioning block 4, the cable tie installation positioning block 4 is provided with a second mounting hole 8 for installing the positioning block on the mounting plate, and the cable tie installation positioning block 4 is also provided with a third mounting hole 11 docking with the first mounting hole 7.

[0032] The groove 2 is a steep slope protruding from the slope wall of the second arc-shaped slot, and the steep slope includes a steep slope surface connected to the slope top on the same side, and the steep slope also includes a steep slope bottom that prevents the cable tie from extending from the slope top on the other side into the slope wall of the second arc-shaped slot and extending from the slope top on the same side as the steep slope. This design can prevent the cable tie from extending into the second arc-shaped slot 1 in the wrong direction, causing the cable tie to be buckled upside down on the corrugated tube. In the field of cable tie installation for corrugated tubes of PTC heater product harnesses, the cable tie includes two locks, one for fixing the corrugated tube and the other for docking with customer products. When the cable tie is buckled upside down on the corrugated tube, the other lock of the cable tie cannot dock with the customer's product.

[0033] The tops of both sides of the first arc-shaped slot are provided with first chamfers 9 for conveniently inserting the corrugated tube, and the tops of both sides of the second arc-shaped slot 1 are provided with second chamfers 10 for conveniently inserting the cable tie.

[0034] The present invention installs the cable tie on the product in a manner that the installation positions of the corrugated pipe and the cable tie are completely positioned by tooling, and the design of the cable tie installation groove can prevent the installation direction of the cable tie from being wrong. The arc-shaped insertion design also simplifies the operation. The position of the entire structural unit on the mounting plate can also automatically determine the installation position of the cable tie, avoiding manual fixing of the product and straightening of the corrugated pipe, manual marking of the installation position of the cable tie with a steel ruler, and manual visual inspection of the installation direction of the cable tie, thereby saving production costs, facilitating employee operation, improving product quality, and greatly improving production efficiency.

[0035] Embodiment 3 of the present invention provides a method for installing a cable tie for a wire harness corrugated tube, comprising the following steps: S1, prefabricating a mounting plate body, a plurality of auxiliary positioning blocks and a plurality of cable tie installation positioning blocks; S2, fixing the auxiliary positioning block to one or two cable tie installation positioning blocks to form a structural unit; S3, installing the assembled structural units on the mounting plate body; S4, straightening the corrugated tube and placing it into the first arc-shaped slot; S5, extending each cable tie from one side of the groove of each second arc-shaped slot, passing under the corrugated tube and extending from the other side of the second arc-shaped slot; S6, buckling the cable tie.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structural unit for installing a wire harness corrugated tube tie, characterized in that: The invention comprises a positioning block, wherein the positioning block is provided with a first arc-shaped slot for fixing the corrugated tube, the middle part of the first arc-shaped slot is provided with at least one second arc-shaped slot for installing a cable tie, the depth of the second arc-shaped slot is greater than the depth of the first arc-shaped slot, the width of the second arc-shaped slot is greater than the width of the first arc-shaped slot, and a groove is provided on the slope wall on one side of the second arc-shaped slot so that the cable tie can only extend from the slope top on this side in one direction and extend from the slope top on the other side, the groove is a steep slope protruding from the slope wall of the second arc-shaped slot, the steep slope includes a steep slope surface connected to the slope top on the same side, and the steep slope also includes a steep slope surface that prevents the cable tie from being inserted into the cable tie from the slope top on the same side, and the steep slope also includes a steep slope surface that prevents the cable tie from being inserted into the cable tie from the slope top on the other side. The belt extends from the top of the slope on the other side into the bottom of the steep slope that extends from the top of the slope on the same side of the steep slope along the slope wall of the second arc-shaped slot; the positioning block includes an auxiliary positioning block and one or two cable tie installation positioning blocks, the first arc-shaped slot includes a third arc-shaped slot provided on the cable tie installation positioning block and a fourth arc-shaped slot provided on the auxiliary positioning block, the third arc-shaped slot passes through the cable tie installation positioning block, the second arc-shaped slot is located at one end of the third arc-shaped slot, the fourth arc-shaped slot passes through the auxiliary positioning block, and the auxiliary positioning block is fixedly connected to one end of each of the cable tie installation positioning blocks provided with the second arc-shaped slot.

2. The structural unit for installing a wire harness corrugated tube tie according to claim 1, characterized in that: The auxiliary positioning block is provided with a first mounting hole for fixedly connecting the auxiliary positioning block and the cable tie mounting positioning block.

3. The structural unit for installing a wire harness corrugated tube tie according to claim 1, characterized in that: The cable tie installation positioning block is provided with a second installation hole for installing the positioning block on the installation plate.

4. The structural unit for installing a wire harness corrugated tube tie according to claim 1, characterized in that: The tops of both sides of the first arc-shaped slot are provided with first chamfers for facilitating the placement of the corrugated tube.

5. The structural unit for installing a wire harness corrugated tube tie according to claim 1, characterized in that: The tops of both sides of the second arc-shaped slot are provided with second chamfers for facilitating the insertion of the cable tie.

6. A mounting plate for mounting a wire harness corrugated tube tie, characterized in that: It comprises a prefabricated mounting plate body and a plurality of structural units for mounting the wiring harness corrugated tube tie as described in any one of claims 1 to 5, wherein the mounting plate body is provided with a plurality of fixing grooves for fixing the structural units, and each of the structural units corresponds to each of the fixing grooves one by one.

7. A method for installing a wire harness corrugated tube tie, applied to the mounting plate for installing a wire harness corrugated tube tie as claimed in claim 6, characterized in that: The method comprises the following steps: S1, prefabricating a mounting plate body, a plurality of auxiliary positioning blocks and a plurality of cable tie mounting positioning blocks; S2, fixing and connecting the auxiliary positioning block with one or two cable tie mounting positioning blocks to form a structural unit; S3, installing the assembled structural units on the mounting plate body; S4, straightening the corrugated pipe and placing it into the first arc-shaped slot; S5, extending each cable tie from one side of the groove of each second arc-shaped slot, passing under the corrugated pipe and extending from the other side of the second arc-shaped slot; S6, fastening the cable tie.

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