Stroke head and tubular motor assembly comprising same
By setting protruding limiting holes, circuit board clearance grooves, and hollowed-out parts in the stroke head, combined with the side cover connection, the problem of poor curtain shading effect caused by excessive thickness of the stroke head is solved, achieving smaller gaps and better shading effect, while improving the durability of the structure.
Patent Information
- Application Number
- CN202520173242.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-26
AI Technical Summary
In the existing technology, the excessive thickness of the travel head results in poor sun shading effect of the curtain, which cannot effectively seal the end of the tubular motor, leading to an excessively large gap between the side edge of the curtain and the side wall of the windowsill, thus affecting the sun shading effect.
Design a stroke head including a body, a circuit board and an end cap. By setting a protrusion on the end cap to insert into the limiting hole of the body and connecting it with fasteners, and combining it with the relief groove and hollow part on the circuit board, the thickness of the stroke head is reduced. At the same time, the side cover is connected to the end cap to enhance the structural strength and avoid damage in case of accidental drop.
The thickness of the travel head is effectively reduced, avoiding excessive gaps between the side edges of the curtain and the side wall of the windowsill, improving the sunshade effect of the curtain, and enhancing the reliability and durability of the structure.
Smart Images
Figure CN223913905U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart home, and in particular to a stroke head and a tubular motor assembly including the stroke head. Background Technology
[0002] Tubular motors can be used to install curtains, controlling the raising and lowering of the curtain fabric via buttons or a remote control. The tubular motor requires a travel head to seal its ends. This travel head also houses electronic components for controlling the motor, including external lights, buttons, indicator lights, and physical switches. One end of the travel head connects to a bracket on the windowsill sidewall to secure it, while the other end connects to the tubular motor. The end connected to the motor is typically axially aligned with it, while the end connected to the bracket usually houses the electronic components. Normally, the curtain cannot cover the area where the travel head connects to the bracket. Therefore, the thickness of this portion affects the gap width between the curtain's side edge and the windowsill sidewall. A larger gap can lead to light leakage, affecting the sun-shading effect. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the defect that the excessive thickness of the stroke head in the prior art leads to poor sunshade effect of the curtain, and to provide a stroke head and a tubular motor assembly containing it.
[0004] The present invention solves the above-mentioned technical problems through the following technical solution:
[0005] A stroke head for sealing the end of a tubular motor, the stroke head comprising a body, a circuit board and an end cap arranged sequentially along the axial direction of the stroke head, the circuit board for controlling the motor, the body having a first part and a second part, the first part for connecting the tubular motor, and the second part located on the side of the first part facing the circuit board along the axial direction for sealing the circuit board;
[0006] The first part has a first limiting hole inside, and the bottom wall of the first limiting hole has a first fastening hole extending axially; the end cap has a protrusion facing the body axially, the protrusion is inserted into the first limiting hole through the circuit board, the protrusion has a mounting groove for connecting the bracket, and the bottom wall of the mounting groove has a second fastening hole.
[0007] The travel head also includes a fastener that passes through the second fastening hole and engages with the first fastening hole to connect the end cap to the body.
[0008] In this technical solution, in order to connect the end cap and the body, a protrusion is provided on the end cap and inserted into the first limiting hole of the body, so that the fastener can extend from the mounting groove of the protrusion and cooperate with the first fastening hole on the bottom wall of the first limiting hole. In order to ensure the reliable connection of the fastener, the mating depth between the fastener and the first fastening hole needs to be large enough. The mating between the fastener and the first fastening hole is inside the first part and does not affect the overall thickness of the second part, the circuit board, and the end cap along the axial direction. Therefore, it is easy to make this part thinner to reduce the thickness of this part, avoid the gap width between the side edge of the curtain and the side wall of the windowsill being too large, which would cause light leakage, and improve the sunshade effect of the curtain.
[0009] Preferably, the circuit board has a plurality of components on one side facing the body along the axial direction, and the second part of the body has a plurality of clearance grooves whose positions correspond one-to-one with the positions of the plurality of components, and the components are partially embedded in the corresponding clearance grooves.
[0010] In this technical solution, by setting the component on the side of the circuit board facing the main body and setting a clearance groove on the second part of the main body so that the component is embedded in the clearance groove, the distance between the second part of the main body and the end cap can be further shortened, thereby further reducing the thickness of the stroke head.
[0011] Preferably, the circuit board has an interface extending to the outer periphery of the travel head, and the circuit board has a cutout portion that extends axially through the circuit board, with the interface located at the cutout portion.
[0012] In this technical solution, since the interface has the largest thickness among all components, setting a cutout on the circuit board so that the interface is located in the cutout is equivalent to providing more axial clearance space for the interface, which can further shorten the distance from the second part of the body to the end cover and further reduce the thickness of the stroke head.
[0013] Preferably, the travel head further includes a side cover for sealing the periphery of the circuit board, and the side cover is connected to the end cover.
[0014] In this technical solution, under normal circumstances, when the stroke head is accidentally dropped, the side cover receives the greatest impact force, and the side cover will transmit the impact force to the components connected to it. Since the second part of the body is provided with a groove, the structural strength of the second part of the body is relatively reduced. Therefore, by setting the side cover to be connected to the end cover instead of the second part of the body, the damage to the entire stroke head when it is accidentally dropped can be reduced, especially the possibility that the second part of the body will be damaged first can be reduced.
[0015] Preferably, the side cover and the end cover are integrally formed.
[0016] Preferably, the side cover has a button opening, the circuit board has an indicator light and a button, the button is located outside the indicator light and at the button opening along the radial direction of the travel head, and the button is made of transparent or semi-transparent material.
[0017] Preferably, the cross-sectional shape of the first limiting hole is non-circular, and the outer peripheral surface of the protrusion abuts against the inner peripheral surface of the first limiting hole.
[0018] In this technical solution, by setting the cross-sectional shape of the first limiting hole to be non-circular and abutting the outer peripheral surface of the protrusion with the inner peripheral surface of the first limiting hole, a circumferential limiting structure that can prevent the end cap from rotating relative to the body is formed between the outer peripheral surface of the protrusion and the inner peripheral surface of the first limiting hole. There is no need to set an additional circumferential limiting structure, making the structure of the stroke head simpler and more reliable.
[0019] Preferably, the outer peripheral surface of the protrusion has a plurality of axially extending limiting grooves, which are spaced apart circumferentially along the protrusion.
[0020] In this technical solution, by setting multiple axially extending limiting grooves on the outer peripheral surface of the protrusion, the limiting effect between the outer peripheral surface of the protrusion and the inner peripheral surface of the first limiting hole is better.
[0021] Preferably, the travel head further includes a first latching portion formed on the body and a second latching portion formed on the inner surface of the side cover, the first latching portion and the second latching portion engaging in a latching fit.
[0022] In this technical solution, by setting a first snap-fit part and a second snap-fit part, the end cap and the body are connected by snap-fit engagement, making the connection between the end cap and the body more convenient.
[0023] Preferably, the second part is further provided with a limiting post, the limiting post being disposed axially toward the circuit board, and the circuit board being provided with a second limiting hole corresponding to the position of the limiting post, the limiting post being inserted into the second limiting hole;
[0024] Preferably, the second portion has an antenna slot along the axial direction toward the side of the circuit board, and the antenna slot extends radially along the travel head to the outer surface of the travel head.
[0025] Preferably, the tubular motor assembly includes a tubular motor, and the tubular motor assembly includes a stroke head as described above, the stroke head blocking the end of the tubular motor.
[0026] The positive and progressive effects of this utility model are as follows: By providing a protrusion facing the body on the end cap, the protrusion is inserted into the first limiting hole of the body. The second fastening hole for fasteners to pass through to connect the end cap and the body and the first fastening hole are respectively provided on the bottom wall of the mounting groove and the bottom wall of the first limiting hole. This eliminates the need to provide a first fastening hole at the second part of the body used to cover the circuit board. No fasteners are provided between the second part of the body and the end cap. Therefore, it is not necessary to increase the axial distance between the second part of the body and the end cap in order to ensure the overlap depth of the fastener and the first fastening hole. Along the axial direction of the stroke head, the distance between the second part of the body and the end cap can be closer, thereby reducing the thickness of the stroke head. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of a tubular motor assembly according to an embodiment of the present invention.
[0028] Figure 2 This is a schematic diagram of the structure of a stroke head according to an embodiment of the present invention.
[0029] Figure 3 This is a schematic diagram of the main body structure of the stroke head according to an embodiment of the present invention (I).
[0030] Figure 4 This is a schematic diagram (II) of the main body structure of the stroke head according to an embodiment of the present invention.
[0031] Figure 5 This is a schematic diagram (a) of the end cap and side cap of the stroke head according to an embodiment of the present invention.
[0032] Figure 6 This is a schematic diagram (II) of the end cap and side cap of the stroke head according to an embodiment of the present invention.
[0033] Figure 7 This is a schematic diagram of the circuit board of a stroke head according to an embodiment of the present invention.
[0034] Figure 8 This is a partial structural schematic diagram of the circuit board of a stroke head according to an embodiment of the present invention.
[0035] Explanation of reference numerals in the attached figures:
[0036] First 100
[0037] Ontology 1
[0038] Part 11
[0039] First limiting hole 111
[0040] First fastening hole 112
[0041] Part 2, Chapter 12
[0042] 121 clearance slot
[0043] Limiting post 123
[0044] Antenna slot 124
[0045] First buckle part 125
[0046] Circuit Board 2
[0047] Component 21
[0048] Interface 211
[0049] Key 212
[0050] Indicator light 213
[0051] Second limiting hole 214
[0052] Hollowed-out section 215
[0053] End cap 3
[0054] 31 protrusions
[0055] Mounting slot 32
[0056] Second fastening hole 33
[0057] Limiting groove 34
[0058] Side cover 5
[0059] Button opening 51
[0060] Second buckle part 52
[0061] 200 tubular motor Detailed Implementation
[0062] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.
[0063] like Figures 1-8 As shown, this embodiment provides a tubular motor assembly, which includes a tubular motor 200 and a stroke head 100, as... Figure 1 As shown, the stroke head 100 blocks one end of the tubular motor. The stroke head 100 includes a body 1, a circuit board 2, and an end cap 3 arranged sequentially along the axial direction of the stroke head 100. The circuit board 2 is used to control the tubular motor, such as... Figure 3 and Figure 4As shown, the main body 1 has a first part 11 and a second part 12. The first part 11 is used to connect the tubular motor 200, and the second part 12 is located on the side of the first part 11 facing the circuit board 2 along the axial direction, and is used to cover the circuit board 2. The first part 11 has an axially extending first limiting hole 111 inside, and the bottom wall of the first limiting hole 111 has an axially extending first fastening hole 112. Figure 5 and Figure 6 As shown, the end cap 3 has a protrusion 31 axially facing the body 1. The protrusion 31 passes through the circuit board 2 and is inserted into the first limiting hole 111. The protrusion 31 has a mounting groove 32 for connecting the bracket, and the bottom wall of the mounting groove 32 has a second fastening hole 33. The stroke head 100 also includes a fastener (not shown in the figure), which passes through the second fastening hole 33 and engages with the first fastening hole 112 to connect the end cap 3 and the body 1. A protrusion 31 facing the body 1 is provided on the end cap 3. The protrusion 31 is inserted into the first limiting hole 111 of the body 1 for fasteners to pass through. The second fastening hole 33 and the first fastening hole 112 are respectively provided on the bottom wall of the mounting groove 32 and the bottom wall of the first limiting hole 111. That is, in order to achieve the connection between the end cap 3 and the body 1, a protrusion 31 is provided on the end cap 3 and inserted into the first limiting hole 111 of the body 1 so that the fastener can extend from the mounting groove 32 of the protrusion 31 and engage with the first fastening hole 112 on the bottom wall of the first limiting hole 111. In order to ensure the reliable connection of the fastener, the engagement depth between the fastener and the first fastening hole needs to be large enough. The engagement between the fastener and the first fastening hole 112 is inside the first part and does not affect the overall thickness of the second part 12, the circuit board 2 and the end cap 3 along the axial direction. Therefore, it is easy to make this part thinner to reduce the thickness of this part. When the travel head 100 is used to block and control the tubular motor 200 that installs the curtain, it can prevent the gap between the side edge of the curtain and the side wall of the windowsill from being too large, thus avoiding light leakage and improving the sunshade effect of the curtain.
[0064] Specifically, in this embodiment, the circuit board 2 is a PCB board. Of course, in other embodiments, the circuit board 2 can be other electronic components in the prior art that can control the tubular motor. Meanwhile, in this embodiment, the first fastening hole 112 is a threaded hole, the second fastening hole 33 is a through hole penetrating the bottom wall of the mounting groove 32, and the fastener is a screw that engages with the thread of the first fastening hole 112. Of course, in other embodiments, the first fastening hole 112 and the fastener can also be other structural forms in the prior art that can connect the body 1 and the end cap 3 of the stroke head 100, such as the fit of a pin and a pin hole, etc., which will not be elaborated here.
[0065] In this embodiment, as Figure 7 and Figure 8As shown, a plurality of components 21 are provided on the side of the circuit board 2 facing the body 1 along the axial direction. The second part 12 of the body 1 has a plurality of clearance grooves 121 whose positions correspond one-to-one with the positions of these components 21. The components 21 are partially embedded in the corresponding clearance grooves 121. By setting the components 21 on the side of the circuit board 2 facing the body 1 and providing clearance grooves 121 on the second part 12 of the body 1 so that the components 21 are embedded in the clearance grooves 121, the overall thickness of the second part 12, the circuit board 2 and the end cap 3 along the axial direction can be further shortened, thereby further reducing the overall thickness of the stroke head 100.
[0066] Furthermore, component 21 on circuit board 2 has an interface 211 extending to the outer periphery of stroke head 100. Circuit board 2 is provided with a cutout portion 215 that penetrates circuit board 2 along the axial direction, and interface 211 is located at the cutout portion 215. Since interface 211 has the largest thickness among all components 21, in the prior art, interface 211 is directly fixed to the surface of circuit board, occupying a large thickness space. However, in this embodiment, the cutout portion 215 is provided on circuit board 2 so that interface 211 is located at the cutout portion 215, which is equivalent to providing more axial clearance space for interface 211. Combined with clearance groove 121 on body 1, the overall thickness of the second part, circuit board, and end cover along the axial direction can be further shortened, thereby further reducing the overall thickness of stroke head 100.
[0067] The depth of the clearance groove 121 can be set as needed according to the thickness of the component 21. For a component 21 with a larger thickness, the depth of the clearance groove 121 can be set to be deeper. Furthermore, a cutout portion 215 can be set at the position of the component with a larger thickness on the circuit board 2. For a component 21 with a smaller thickness, the depth of the clearance groove 121 can be set to be shallower. This will not be elaborated further here.
[0068] In this embodiment, as Figure 5 and Figure 6 As shown, the stroke head 100 also includes a side cover 5, which is used to cover the periphery of the circuit board 2. The side cover 5 is connected to the end cover 3. Normally, when the stroke head 100 is accidentally dropped, the side cover 5 will receive the greatest impact force, and the side cover 5 will transmit the impact force to the components connected to it. Since the second part 12 of the body 1 is provided with a relief groove 121, the structural strength of the second part 12 of the body 1 is relatively reduced. Therefore, by setting the side cover 5 to be connected to the end cover 3 instead of rigidly connected to the second part 12 of the body 1, the damage to the entire stroke head 100 when the stroke head 100 is accidentally dropped can be reduced, especially reducing the possibility that the second part 12 of the body 1 will be damaged first.
[0069] Furthermore, in this embodiment, the end cap 3 and the side cap 5 are integrally formed to improve the connection strength between the side cap 5 and the end cap 3.
[0070] Of course, in other embodiments, the side cover 5 can also be reliably connected to the end cover 3 by other methods in the prior art, such as welding, which will not be elaborated here.
[0071] In this embodiment, the end cap 3, side cap 5, and the second part 12 of the body 1 need to enclose the circuit board 2 to prevent the circuit board 2 from being exposed. Therefore, along the axial direction of the travel head 100, the side cap 5 must extend at least to be flush with the side of the second part 12 of the body 1 facing the end cap 3.
[0072] Meanwhile, a button opening 51 is provided on the side cover 5, and an indicator light 213 and a button 212 are provided on the circuit board 2. Along the radial direction of the travel head 100, the button 212 is located outside the indicator light 213 and at the button opening 51. The button 212 is made of transparent or semi-transparent material. By placing the button 212 outside the indicator light 213, the two components 21, the indicator light 213 and the button 212, can be arranged more compactly, saving space within the travel head 100 used for setting the components 21, and further reducing the thickness of the travel head 100. Furthermore, by making the button 212 transparent or semi-transparent, the user can see the on / off state of the indicator light 213 through the button 212.
[0073] In this embodiment, as Figures 3-6 As shown, the relative rotation of the body 1, circuit board 2, and end cap 3 of the stroke head 100 around the axial direction is restricted. The cross-sectional shape of the first limiting hole 111 is non-circular, and the outer peripheral surface of the protrusion 31 abuts against the inner peripheral surface of the first limiting hole 111. By setting the cross-sectional shape of the first limiting hole 111 to be non-circular and abutting the outer peripheral surface of the protrusion 31 against the inner peripheral surface of the first limiting hole 111, a circumferential limiting structure is formed between the outer peripheral surface of the protrusion 31 and the inner peripheral surface of the first limiting hole 111, preventing the end cap 3 from rotating relative to the body 1. This eliminates the need for an additional circumferential limiting structure, making the structure of the stroke head 100 simpler and more reliable.
[0074] Furthermore, in this embodiment, the outer peripheral surface of the protrusion 31 has a plurality of axially extending limiting grooves 34, which are spaced apart circumferentially along the protrusion 31. By providing a plurality of axially extending limiting grooves 34 on the outer peripheral surface of the protrusion 31, the limiting effect between the outer peripheral surface of the protrusion 31 and the inner peripheral surface of the first limiting hole 111 is improved.
[0075] Meanwhile, in this embodiment, such as Figure 3 and Figure 4As shown, the second part 12 of the main body 1 is provided with a limiting post 123. The limiting post 123 is positioned axially toward the circuit board 2. The circuit board 2 is provided with a second limiting hole 214 corresponding to the position of the limiting post 123. The limiting post 123 is inserted into the second limiting hole 214. By providing the limiting post 123 and the second limiting hole 214, relative rotation between the circuit board 2 and the main body 1 around the axial direction can be prevented.
[0076] In this embodiment, as Figure 4 and Figure 6 As shown, the stroke head 100 also includes a first latching portion 125 formed on the body 1 and a second latching portion 52 formed on the inner surface of the side cover 5. The first latching portion 125 and the second latching portion 52 engage with each other. By setting the first latching portion 125 and the second latching portion 52, the end cover 3 and the body 1 are connected by a latching engagement, making the connection between the end cover 3 and the body 1 more convenient. Specifically, the positions of the first latching portion 125 and the second latching portion 52, as well as the positions of the protrusion 31 and the first limiting hole 111, are matched. When installing the stroke head 100, the first latching portion 125 and the second latching portion 52 are first aligned and latched, and the protrusion 31 and the first limiting hole 111 are also aligned accordingly. The side cover 5 and the body 1 are latched together. If the side cover 5 receives excessive impact when the stroke head 100 falls, the first latching portion 125 and the second latching portion 52 will disengage, preventing the second part 12 of the body 1 from receiving excessive impact.
[0077] In this embodiment, as Figure 3 and Figure 4 As shown, the second part 12 of the main body 1 has an antenna slot 124 on the side facing the circuit board 2 along the axial direction. The antenna slot 124 extends radially to the outer surface of the travel head 100. The antenna slot 124 is a reserved slot for connecting the antenna to the circuit board 2. There are two antenna slots 124, and there is a certain distance between the two antenna slots 124 to avoid mutual interference between the antennas.
[0078] Of course, in other embodiments, the antenna slot 124 may not be provided, which will not be described in detail here.
[0079] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.
Claims
1. A stroke head for sealing an end of a tubular motor, the stroke head comprising a body, a circuit board and an end cover arranged in sequence along an axial direction of the stroke head, the circuit board being configured to control the motor, the body having a first portion configured to connect to the tubular motor and a second portion located on a side of the first portion axially towards the circuit board and configured to cover the circuit board, characterized in that: the first portion has a first limiting hole in an interior thereof, a bottom wall of the first limiting hole having a first fastening hole extending in the axial direction; the end cover has a protrusion extending in the axial direction towards the body, the protrusion being inserted into the first limiting hole through the circuit board, the protrusion having a mounting groove configured to connect to a bracket, a bottom wall of the mounting groove having a second fastening hole; the stroke head further comprises a fastener configured to connect the end cover and the body by passing through the second fastening hole and cooperating with the first fastening hole. the circuit board has a plurality of elements arranged on a side thereof axially towards the body, the second portion of the body has a plurality of avoiding grooves arranged in one-to-one correspondence with positions of the plurality of elements, the elements being partially embedded in the corresponding avoiding grooves. the circuit board has an interface extending to an outer circumferential side of the stroke head, the circuit board has a hollow portion extending through the circuit board in the axial direction, the interface being arranged at the hollow portion. the stroke head further comprises a side cover configured to cover a circumferential side of the circuit board, the side cover being connected to the end cover.
2. The ram head of claim 1 wherein, the side cover and the end cover are integrally formed.
3. A ram as claimed in claim 1 or 2, wherein and / or, the side cover has a key opening, the circuit board has a light indicator and a key, the key being arranged on an outer side of the light indicator in a radial direction of the stroke head and located at the key opening, the key being made of transparent or translucent material.
4. The ram as defined in claim 1, wherein a cross-sectional shape of the first limiting hole is non-circular, an outer circumferential side surface of the protrusion abuts an inner circumferential side surface of the first limiting hole.
5. The ram as defined in claim 4, wherein the outer circumferential side surface of the protrusion has a plurality of limiting grooves extending in the axial direction, the plurality of limiting grooves being arranged in a circumferential direction of the protrusion at intervals. the stroke head further comprises a first clamping portion formed on the body and a second clamping portion formed on an inner surface of the side cover, the first clamping portion and the second clamping portion being clamped and matched.
6. The ram as defined in claim 1, wherein the second portion further has a limiting post arranged axially towards the circuit board, the circuit board has a second limiting hole corresponding to a position of the limiting post, the limiting post being inserted into the second limiting hole.
7. The ram as defined in claim 6, wherein and / or, a side of the second portion axially towards the circuit board has an antenna groove extending to an outer surface of the stroke head in a radial direction of the stroke head.
8. The ram as defined in claim 4, wherein the tubular motor assembly comprises a tubular motor, the tubular motor assembly comprising the stroke head according to any one of claims 1-9.
9. The ram as defined in claim 1, wherein 10. A tubular motor assembly characterized by,