Hair trimmer with replaceable head

Abstract

The utility model belongs to the field of hair trimming devices, and relates to a hair trimming device with a replaceable head, which comprises a shell, a driving device arranged in the shell and a driving head extending out of the upper end of the shell, the driving head is detachably connected with a hair trimming head, and the driving device drives the hair trimming head to work through the driving head; a fixed connecting plate is fixed on the hair trimming head, the fixed connecting plate comprises a hair trimming connecting part and a body connecting part, the hair trimming connecting part is fixedly connected with the hair trimming head, and a bayonet is formed in the body connecting part; an inserting groove is formed in the side face of the shell, the body connecting part is inserted into the inserting groove, the shell is provided with a hinge seat opposite to the inserting groove, the hinge seat is rotationally connected with a button, the button is arranged outside the inserting groove, the button comprises a clamping block, and the clamping block penetrates through the through hole and abuts against the lower end of the clamping opening; a pre-tightening spring is arranged on the button, and the pre-tightening spring always exerts force for the clamping block to stretch into the bayonet; the device has the advantage that different head parts can be replaced to realize different functions.

Description

Technical Field

[0001] This utility model belongs to the field of hair trimmers and relates to a hair trimmer with a replaceable head. Background Technology

[0002] Traditional hair trimmers have limited functionality, typically only capable of trimming nose hair, eyebrows, or even just cutting hair. To achieve multiple functions, consumers need to purchase multiple devices, leading to issues of space consumption and increased costs. Summary of the Invention

[0003] In response to the above-mentioned problems, the present invention provides a hair trimmer with interchangeable heads, which has the advantage of being able to perform different functions by using different heads.

[0004] The object of the present invention is achieved like this:

[0005] A hair trimmer with a replaceable head includes a trimmer body, the trimmer body includes a housing, a drive device disposed within the housing, and a drive head extending from the upper end of the housing. The drive head is connected to the drive device, and a trimming head is detachably connected to the drive head. The drive device drives the trimming head to work through the drive head.

[0006] A fixed connecting plate is fixed to the trimming head. The fixed connecting plate includes a trimming connecting part and a body connecting part. The trimming connecting part is fixedly connected to the trimming head, and a snap is formed on the body connecting part.

[0007] The housing has a slot formed on its side, and the main body connecting part is inserted into the slot. The housing has a hinge seat opposite the slot, and a button is rotatably connected to the hinge seat. The button is located outside the slot. A through hole is formed on the side wall of the slot near the button, and the through hole corresponds to the bayonet. The button includes a locking block, which passes through the through hole and abuts against the lower end of the bayonet. The button is provided with a pre-tension spring, which always provides force to the locking block to extend into the bayonet.

[0008] The above setup achieves a dual-point connection: one point is driven by the drive head, and the other point is a detachable, fixed connection via a fixed connecting plate. The main body connector is inserted into the slot, and the button's locking mechanism engages with the connector's latch to prevent it from retracting, thus securing the trimming head to the main body. Pressing the button removes the locking mechanism from the connector, allowing the trimming head to be removed and replaced with a different size head, enabling different functions through different head replacements.

[0009] The present invention is further configured such that: the slot includes a main body sidewall, a fixing post is formed on the main body sidewall, a screw hole is formed on the fixing post, a connecting plate is provided at a distance from the main body sidewall, and is fixedly connected to the main body sidewall by screws and screw holes.

[0010] The slot allows for a removable design, facilitating future maintenance and installation.

[0011] The present invention is further configured such that: a relief groove is formed in the middle of the body connecting part, the lower part of the relief groove is open, and two snap-fits are formed on the body connecting part and respectively disposed on both sides of the relief groove.

[0012] The present invention is further configured such that the fixing column is disposed in the relief groove, which serves as a guide.

[0013] The fixing post, positioned within the recess, acts as a guide when the main body connector is inserted into the slot, preventing misalignment. Furthermore, this structure improves space utilization, avoiding the need to occupy space from other components.

[0014] The present invention is further configured such that: the button is rotatably connected to the hinge seat via a pin, the preload spring is sleeved on the pin, one end of the preload spring abuts against the outer wall of the connecting plate, and the other end of the preload spring abuts against the button, and the preload spring always provides a force for the locking block to extend into the locking slot.

[0015] The present invention is further configured such that: the locking block is disposed at the upper end of the button, one end of the pre-tension spring abuts against the outer wall of the connecting plate, and the other end of the pre-tension spring abuts against the lower end of the button. The pre-tension spring applies a force to the lower end of the button away from the outer wall of the connecting plate. The pin is used as a lever fulcrum so that the locking block always tends to extend into the locking slot.

[0016] The present invention is further configured such that: a spring receiving cavity is formed on the button, and a pre-tightening spring is disposed inside the spring receiving cavity at one end of the button.

[0017] The present invention is further configured such that: a spring limiting block is provided on the outer wall of the connecting plate, and one end of the pre-tightening spring abuts against the outer wall of the connecting plate abuts against the spring limiting block.

[0018] By setting the spring limit block, the preload spring will not slip or shift at the end that abuts against the outer wall of the connecting plate.

[0019] The present invention is further configured such that the drive head is a universal ball joint connection.

[0020] The present invention is further configured such that: a transition bend is formed between the trimming connecting part and the body connecting part, the body connecting part is vertically arranged, the transition bend is located behind the body connecting part, and part of the trimming connecting part is located in front of the body connecting part and part is located behind the body connecting part.

[0021] By setting the transition bend, the volume of the trimming connection is increased without increasing the lateral distance between the trimming connection and the main body connection, thereby improving the high applicability of the trimming connection.

[0022] The significant and beneficial technical effect of this invention compared to existing technologies is that: by inserting the main body connecting part into the slot, the button's locking block engages with the locking slot of the main body connecting part to achieve a limiting position, ensuring that the main body connecting part will not exit the slot, thereby achieving a fixed connection between the trimming head and the main body. Then, by pressing the button, the locking block is removed from the locking slot of the main body connecting part, and the trimming head is removed and replaced with other trimming heads of different specifications, thus achieving different functions by changing different heads. Attached Figure Description

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0024] Figure 1 This is a schematic diagram of the trimmer.

[0025] Figure 2 This is a schematic diagram of the structure of the trimmer body.

[0026] Figure 3 This is a structural diagram of the shell and the fixed connecting plate.

[0027] Figure 4 This is a structural diagram of the shell, fixed connecting plate, and connecting plate.

[0028] Figure 5 This is a structural diagram of the housing and button.

[0029] Figure 6 This is one of the structural diagrams for fixing the connecting plate and the button.

[0030] Figure 7 This is the second structural diagram of the fixed connecting plate and button.

[0031] 1-Depilator body; 2-Housing; 3-Drive head; 4-Depilator head; 5-Fixed connecting plate; 6-Depilator connecting part; 7-Body connecting part; 8-Bayonet; 9-Slot; 10-Hinge seat; 11-Button; 12-Through hole; 13-Clamping block; 14-Preload spring; 15-Fixed post; 16-Connecting plate; 17-Leaning groove; 18-Pin; 19-Spring receiving cavity; 20-Spring limiting block; 21-Transition bend. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0033] A hair trimmer with a replaceable head includes a hair trimmer body 1, which includes a housing 2, a drive device disposed inside the housing, and a drive head 3 extending from the upper end of the housing. The drive head is connected to the drive device, and a trimming head 4 is detachably connected to the drive head. The trimming head includes various specifications, such as a nose hair trimming head, a hair trimming head, an eyebrow trimming head, a leg hair trimming head, etc. The drive device drives the trimming head to work through the drive head.

[0034] A fixing connecting plate 5 is fixed to the trimming head. The fixing connecting plate 5 includes a trimming connecting part 6 and a body connecting part 7. The trimming connecting part 6 is fixedly connected to the trimming head 4, and a bayonet 8 is formed on the body connecting part 7.

[0035] The housing 2 has a slot 9 formed on its side. The main body connecting part 7 is inserted into the slot 9. The housing 2 is provided with a hinge seat 10 opposite to the slot 9. A button 11 is rotatably connected to the hinge seat 10. The button 11 is located outside the slot 9. A through hole 12 is formed on the side wall of the slot 9 near the button 11. The through hole 12 corresponds to the bayonet 8. The button 11 includes a locking block 13. The locking block 13 passes through the through hole and abuts against the lower end of the bayonet 8. The button 11 is provided with a pre-tension spring 14. The pre-tension spring 14 always provides force to the locking block 13 to extend into the bayonet 8.

[0036] The above setup achieves a dual-point connection: one point is driven by the drive head 3, and the other point is detachably fixed via the fixed connecting plate 5. The main body connecting part 7 is inserted into the slot 9, and the locking block 13 of the button 11 engages with the latch 8 of the main body connecting part, ensuring that the main body connecting part 7 does not retract from the slot 9, thus achieving a fixed connection between the trimming head 4 and the main body. Then, by pressing the button 11, the locking block 13 is removed from the latch 8 of the main body connecting part, and the trimming head 4 is removed and replaced with a trimming head of another specification, thereby achieving different functions by changing different heads.

[0037] The slot 9 includes a main body sidewall with a fixing post 15 formed thereon. The fixing post 15 has screw holes formed thereon. A connecting plate 16 is spaced apart from the main body sidewall and is fixedly connected to it via screws and screw holes. The slot 9 is detachable, facilitating future maintenance and installation.

[0038] The main body connecting part 7 has a relief groove 17 formed in the middle, with an opening at the bottom of the relief groove 17. Two latches 8 are formed on the main body connecting part 7 and are respectively disposed on both sides of the relief groove 17.

[0039] The fixing post 15 is disposed in the relief groove 17 and serves as a guide. The fixing post 15's placement in the relief groove 17 guides the insertion of the main body connecting part 7 into the slot 9, preventing misalignment. Furthermore, this structure improves space utilization and does not occupy additional space from other components.

[0040] The button 11 is rotatably connected to the hinge seat 10 via a pin 18. The preload spring 14 is sleeved on the pin 18. One end of the preload spring 14 abuts against the outer wall of the connecting plate 16, and the other end of the preload spring 14 abuts against the button 11. The preload spring 14 always provides a force for the locking block 13 to extend into the locking slot 8.

[0041] The locking block 13 is located at the upper end of the button 11. One end of the pre-tension spring 14 abuts against the outer wall of the connecting plate 16, and the other end of the pre-tension spring 14 abuts against the lower end of the button 11. The pre-tension spring 14 applies a force to the lower end of the button away from the outer wall of the connecting plate 16. Through the pin 18 as a lever fulcrum, the locking block 13 always tends to extend into the locking slot 8.

[0042] The button 11 has a spring receiving cavity 19 formed on it, and the preload spring 14 is disposed inside the spring receiving cavity 19 and abuts against one end of the button.

[0043] A spring limiting block 20 is also provided on the outer wall of the connecting plate 16, and one end of the preload spring 14 abuts against the outer wall of the connecting plate and against the spring limiting block 20. The setting of the spring limiting block 20 prevents the end of the preload spring abutting against the outer wall of the connecting plate from slipping or shifting.

[0044] The drive head 3 is a universal ball joint connection.

[0045] A transition bend 21 is formed between the trimming connecting part 6 and the main body connecting part 7. The main body connecting part 7 is vertically arranged, and the transition bend 21 is located behind the main body connecting part 7. Part of the trimming connecting part 6 is located in front of the main body connecting part 7, and part is located behind the main body connecting part 7. By setting the transition bend 21, the volume of the trimming connecting part 6 is increased without increasing the lateral distance between the trimming connecting part 6 and the main body connecting part 7, thereby improving the applicability of the trimming connecting part 6.

[0046] This invention features the ability to replace different heads to achieve different functions.

[0047] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A hair trimmer with a replaceable head, comprising a trimmer body, the trimmer body including a housing, a drive device disposed within the housing, and a drive head extending from the upper end of the housing, the drive head being connected to the drive device, characterized in that... A trimming head is detachably connected to the drive head, and the drive device drives the trimming head to work through the drive head. A fixed connecting plate is fixed to the trimming head. The fixed connecting plate includes a trimming connecting part and a body connecting part. The trimming connecting part is fixedly connected to the trimming head, and a snap is formed on the body connecting part. The housing has a slot formed on its side, and the main body connecting part is inserted into the slot. The housing has a hinge seat opposite the slot, and a button is rotatably connected to the hinge seat. The button is located outside the slot. A through hole is formed on the side wall of the slot near the button, and the through hole corresponds to the bayonet. The button includes a locking block, which passes through the through hole and abuts against the lower end of the bayonet. The button is provided with a pre-tension spring, which always provides force to the locking block to extend into the bayonet.

2. A hair trimmer with a replaceable head according to claim 1, characterized in that: The slot includes a main body sidewall, a fixing post formed on the main body sidewall, a screw hole formed on the fixing post, and a connecting plate spaced apart from the main body sidewall and fixedly connected to the main body sidewall by screws and screw holes.

3. A hair trimmer with a replaceable head according to claim 2, characterized in that: The main body connecting part has a relief groove formed in the middle, with an opening at the bottom of the relief groove, and two snap-fits formed on the main body connecting part, respectively set on both sides of the relief groove.

4. A hair trimmer with a replaceable head according to claim 3, characterized in that: The fixing column is set in the relief groove and serves as a guide.

5. A hair trimmer with a replaceable head according to claim 2, characterized in that: The button is rotatably connected to the hinge seat via a pin. The preload spring is sleeved on the pin, with one end of the preload spring abutting against the outer wall of the connecting plate and the other end abutting against the button. The preload spring always applies a force to the locking block as it extends into the locking slot.

6. A hair trimmer with a replaceable head according to claim 5, characterized in that: The locking block is located at the upper end of the button. One end of the pre-tension spring abuts against the outer wall of the connecting plate, and the other end of the pre-tension spring abuts against the lower end of the button. The pre-tension spring applies a force to the lower end of the button away from the outer wall of the connecting plate. The pin acts as a lever fulcrum, so that the locking block always tends to extend into the locking slot.

7. A hair trimmer with a replaceable head according to claim 6, characterized in that: The button has a spring receiving cavity formed on it, and a pre-tightening spring is set inside the spring receiving cavity, pressing against one end of the button.

8. A hair trimmer with a replaceable head according to claim 7, characterized in that: The outer wall of the connecting plate is also provided with a spring limiting block, and one end of the pre-tightening spring abuts against the outer wall of the connecting plate and against the spring limiting block.

9. A hair trimmer with a replaceable head according to claim 1, characterized in that: The drive head uses a universal ball joint connection.

10. A hair trimmer with a replaceable head according to claim 1, characterized in that: A transition bend is formed between the trimming connection part and the body connection part. The body connection part is vertically arranged, and the transition bend part is located behind the body connection part. Part of the trimming connection part is located in front of the body connection part and part is located behind the body connection part.

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